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* as.h (enum debug_info_type): Define.
[deliverable/binutils-gdb.git] / gas / ecoff.c
1 /* ECOFF debugging support.
2 Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
4 This file was put together by Ian Lance Taylor <ian@cygnus.com>. A
5 good deal of it comes directly from mips-tfile.c, by Michael
6 Meissner <meissner@osf.org>.
7
8 This file is part of GAS.
9
10 GAS is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2, or (at your option)
13 any later version.
14
15 GAS is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with GAS; see the file COPYING. If not, write to the Free
22 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
23 02111-1307, USA. */
24
25 #include "as.h"
26
27 /* This file is compiled conditionally for those targets which use
28 ECOFF debugging information (e.g., MIPS ECOFF, MIPS ELF, Alpha
29 ECOFF). */
30
31 #ifdef ECOFF_DEBUGGING
32
33 #include "coff/internal.h"
34 #include "coff/symconst.h"
35 #include "ecoff.h"
36 #include "aout/stab_gnu.h"
37
38 #include <ctype.h>
39
40 /* Why isn't this in coff/sym.h? */
41 #define ST_RFDESCAPE 0xfff
42
43 /* This file constructs the information used by the ECOFF debugging
44 format. It just builds a large block of data.
45
46 We support both ECOFF style debugging and stabs debugging (the
47 stabs symbols are encapsulated in ECOFF symbols). This should let
48 us handle anything the compiler might throw at us. */
49
50 /* Here is a brief description of the MIPS ECOFF symbol table, by
51 Michael Meissner. The MIPS symbol table has the following pieces:
52
53 Symbolic Header
54 |
55 +-- Auxiliary Symbols
56 |
57 +-- Dense number table
58 |
59 +-- Optimizer Symbols
60 |
61 +-- External Strings
62 |
63 +-- External Symbols
64 |
65 +-- Relative file descriptors
66 |
67 +-- File table
68 |
69 +-- Procedure table
70 |
71 +-- Line number table
72 |
73 +-- Local Strings
74 |
75 +-- Local Symbols
76
77 The symbolic header points to each of the other tables, and also
78 contains the number of entries. It also contains a magic number
79 and MIPS compiler version number, such as 2.0.
80
81 The auxiliary table is a series of 32 bit integers, that are
82 referenced as needed from the local symbol table. Unlike standard
83 COFF, the aux. information does not follow the symbol that uses
84 it, but rather is a separate table. In theory, this would allow
85 the MIPS compilers to collapse duplicate aux. entries, but I've not
86 noticed this happening with the 1.31 compiler suite. The different
87 types of aux. entries are:
88
89 1) dnLow: Low bound on array dimension.
90
91 2) dnHigh: High bound on array dimension.
92
93 3) isym: Index to the local symbol which is the start of the
94 function for the end of function first aux. entry.
95
96 4) width: Width of structures and bitfields.
97
98 5) count: Count of ranges for variant part.
99
100 6) rndx: A relative index into the symbol table. The relative
101 index field has two parts: rfd which is a pointer into the
102 relative file index table or ST_RFDESCAPE which says the next
103 aux. entry is the file number, and index: which is the pointer
104 into the local symbol within a given file table. This is for
105 things like references to types defined in another file.
106
107 7) Type information: This is like the COFF type bits, except it
108 is 32 bits instead of 16; they still have room to add new
109 basic types; and they can handle more than 6 levels of array,
110 pointer, function, etc. Each type information field contains
111 the following structure members:
112
113 a) fBitfield: a bit that says this is a bitfield, and the
114 size in bits follows as the next aux. entry.
115
116 b) continued: a bit that says the next aux. entry is a
117 continuation of the current type information (in case
118 there are more than 6 levels of array/ptr/function).
119
120 c) bt: an integer containing the base type before adding
121 array, pointer, function, etc. qualifiers. The
122 current base types that I have documentation for are:
123
124 btNil -- undefined
125 btAdr -- address - integer same size as ptr
126 btChar -- character
127 btUChar -- unsigned character
128 btShort -- short
129 btUShort -- unsigned short
130 btInt -- int
131 btUInt -- unsigned int
132 btLong -- long
133 btULong -- unsigned long
134 btFloat -- float (real)
135 btDouble -- Double (real)
136 btStruct -- Structure (Record)
137 btUnion -- Union (variant)
138 btEnum -- Enumerated
139 btTypedef -- defined via a typedef isymRef
140 btRange -- subrange of int
141 btSet -- pascal sets
142 btComplex -- fortran complex
143 btDComplex -- fortran double complex
144 btIndirect -- forward or unnamed typedef
145 btFixedDec -- Fixed Decimal
146 btFloatDec -- Float Decimal
147 btString -- Varying Length Character String
148 btBit -- Aligned Bit String
149 btPicture -- Picture
150 btVoid -- Void (MIPS cc revision >= 2.00)
151
152 d) tq0 - tq5: type qualifier fields as needed. The
153 current type qualifier fields I have documentation for
154 are:
155
156 tqNil -- no more qualifiers
157 tqPtr -- pointer
158 tqProc -- procedure
159 tqArray -- array
160 tqFar -- 8086 far pointers
161 tqVol -- volatile
162
163
164 The dense number table is used in the front ends, and disappears by
165 the time the .o is created.
166
167 With the 1.31 compiler suite, the optimization symbols don't seem
168 to be used as far as I can tell.
169
170 The linker is the first entity that creates the relative file
171 descriptor table, and I believe it is used so that the individual
172 file table pointers don't have to be rewritten when the objects are
173 merged together into the program file.
174
175 Unlike COFF, the basic symbol & string tables are split into
176 external and local symbols/strings. The relocation information
177 only goes off of the external symbol table, and the debug
178 information only goes off of the internal symbol table. The
179 external symbols can have links to an appropriate file index and
180 symbol within the file to give it the appropriate type information.
181 Because of this, the external symbols are actually larger than the
182 internal symbols (to contain the link information), and contain the
183 local symbol structure as a member, though this member is not the
184 first member of the external symbol structure (!). I suspect this
185 split is to make strip easier to deal with.
186
187 Each file table has offsets for where the line numbers, local
188 strings, local symbols, and procedure table starts from within the
189 global tables, and the indexs are reset to 0 for each of those
190 tables for the file.
191
192 The procedure table contains the binary equivalents of the .ent
193 (start of the function address), .frame (what register is the
194 virtual frame pointer, constant offset from the register to obtain
195 the VFP, and what register holds the return address), .mask/.fmask
196 (bitmask of saved registers, and where the first register is stored
197 relative to the VFP) assembler directives. It also contains the
198 low and high bounds of the line numbers if debugging is turned on.
199
200 The line number table is a compressed form of the normal COFF line
201 table. Each line number entry is either 1 or 3 bytes long, and
202 contains a signed delta from the previous line, and an unsigned
203 count of the number of instructions this statement takes.
204
205 The local symbol table contains the following fields:
206
207 1) iss: index to the local string table giving the name of the
208 symbol.
209
210 2) value: value of the symbol (address, register number, etc.).
211
212 3) st: symbol type. The current symbol types are:
213
214 stNil -- Nuthin' special
215 stGlobal -- external symbol
216 stStatic -- static
217 stParam -- procedure argument
218 stLocal -- local variable
219 stLabel -- label
220 stProc -- External Procedure
221 stBlock -- beginning of block
222 stEnd -- end (of anything)
223 stMember -- member (of anything)
224 stTypedef -- type definition
225 stFile -- file name
226 stRegReloc -- register relocation
227 stForward -- forwarding address
228 stStaticProc -- Static procedure
229 stConstant -- const
230
231 4) sc: storage class. The current storage classes are:
232
233 scText -- text symbol
234 scData -- initialized data symbol
235 scBss -- un-initialized data symbol
236 scRegister -- value of symbol is register number
237 scAbs -- value of symbol is absolute
238 scUndefined -- who knows?
239 scCdbLocal -- variable's value is IN se->va.??
240 scBits -- this is a bit field
241 scCdbSystem -- value is IN debugger's address space
242 scRegImage -- register value saved on stack
243 scInfo -- symbol contains debugger information
244 scUserStruct -- addr in struct user for current process
245 scSData -- load time only small data
246 scSBss -- load time only small common
247 scRData -- load time only read only data
248 scVar -- Var parameter (fortranpascal)
249 scCommon -- common variable
250 scSCommon -- small common
251 scVarRegister -- Var parameter in a register
252 scVariant -- Variant record
253 scSUndefined -- small undefined(external) data
254 scInit -- .init section symbol
255
256 5) index: pointer to a local symbol or aux. entry.
257
258
259
260 For the following program:
261
262 #include <stdio.h>
263
264 main(){
265 printf("Hello World!\n");
266 return 0;
267 }
268
269 Mips-tdump produces the following information:
270
271 Global file header:
272 magic number 0x162
273 # sections 2
274 timestamp 645311799, Wed Jun 13 17:16:39 1990
275 symbolic header offset 284
276 symbolic header size 96
277 optional header 56
278 flags 0x0
279
280 Symbolic header, magic number = 0x7009, vstamp = 1.31:
281
282 Info Offset Number Bytes
283 ==== ====== ====== =====
284
285 Line numbers 380 4 4 [13]
286 Dense numbers 0 0 0
287 Procedures Tables 384 1 52
288 Local Symbols 436 16 192
289 Optimization Symbols 0 0 0
290 Auxiliary Symbols 628 39 156
291 Local Strings 784 80 80
292 External Strings 864 144 144
293 File Tables 1008 2 144
294 Relative Files 0 0 0
295 External Symbols 1152 20 320
296
297 File #0, "hello2.c"
298
299 Name index = 1 Readin = No
300 Merge = No Endian = LITTLE
301 Debug level = G2 Language = C
302 Adr = 0x00000000
303
304 Info Start Number Size Offset
305 ==== ===== ====== ==== ======
306 Local strings 0 15 15 784
307 Local symbols 0 6 72 436
308 Line numbers 0 13 13 380
309 Optimization symbols 0 0 0 0
310 Procedures 0 1 52 384
311 Auxiliary symbols 0 14 56 628
312 Relative Files 0 0 0 0
313
314 There are 6 local symbols, starting at 436
315
316 Symbol# 0: "hello2.c"
317 End+1 symbol = 6
318 String index = 1
319 Storage class = Text Index = 6
320 Symbol type = File Value = 0
321
322 Symbol# 1: "main"
323 End+1 symbol = 5
324 Type = int
325 String index = 10
326 Storage class = Text Index = 12
327 Symbol type = Proc Value = 0
328
329 Symbol# 2: ""
330 End+1 symbol = 4
331 String index = 0
332 Storage class = Text Index = 4
333 Symbol type = Block Value = 8
334
335 Symbol# 3: ""
336 First symbol = 2
337 String index = 0
338 Storage class = Text Index = 2
339 Symbol type = End Value = 28
340
341 Symbol# 4: "main"
342 First symbol = 1
343 String index = 10
344 Storage class = Text Index = 1
345 Symbol type = End Value = 52
346
347 Symbol# 5: "hello2.c"
348 First symbol = 0
349 String index = 1
350 Storage class = Text Index = 0
351 Symbol type = End Value = 0
352
353 There are 14 auxiliary table entries, starting at 628.
354
355 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
356 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
357 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0]
358 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0]
359 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
360 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0]
361 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0]
362 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0]
363 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0]
364 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0]
365 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0]
366 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0]
367 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0]
368 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
369
370 There are 1 procedure descriptor entries, starting at 0.
371
372 Procedure descriptor 0:
373 Name index = 10 Name = "main"
374 .mask 0x80000000,-4 .fmask 0x00000000,0
375 .frame $29,24,$31
376 Opt. start = -1 Symbols start = 1
377 First line # = 3 Last line # = 6
378 Line Offset = 0 Address = 0x00000000
379
380 There are 4 bytes holding line numbers, starting at 380.
381 Line 3, delta 0, count 2
382 Line 4, delta 1, count 3
383 Line 5, delta 1, count 2
384 Line 6, delta 1, count 6
385
386 File #1, "/usr/include/stdio.h"
387
388 Name index = 1 Readin = No
389 Merge = Yes Endian = LITTLE
390 Debug level = G2 Language = C
391 Adr = 0x00000000
392
393 Info Start Number Size Offset
394 ==== ===== ====== ==== ======
395 Local strings 15 65 65 799
396 Local symbols 6 10 120 508
397 Line numbers 0 0 0 380
398 Optimization symbols 0 0 0 0
399 Procedures 1 0 0 436
400 Auxiliary symbols 14 25 100 684
401 Relative Files 0 0 0 0
402
403 There are 10 local symbols, starting at 442
404
405 Symbol# 0: "/usr/include/stdio.h"
406 End+1 symbol = 10
407 String index = 1
408 Storage class = Text Index = 10
409 Symbol type = File Value = 0
410
411 Symbol# 1: "_iobuf"
412 End+1 symbol = 9
413 String index = 22
414 Storage class = Info Index = 9
415 Symbol type = Block Value = 20
416
417 Symbol# 2: "_cnt"
418 Type = int
419 String index = 29
420 Storage class = Info Index = 4
421 Symbol type = Member Value = 0
422
423 Symbol# 3: "_ptr"
424 Type = ptr to char
425 String index = 34
426 Storage class = Info Index = 15
427 Symbol type = Member Value = 32
428
429 Symbol# 4: "_base"
430 Type = ptr to char
431 String index = 39
432 Storage class = Info Index = 16
433 Symbol type = Member Value = 64
434
435 Symbol# 5: "_bufsiz"
436 Type = int
437 String index = 45
438 Storage class = Info Index = 4
439 Symbol type = Member Value = 96
440
441 Symbol# 6: "_flag"
442 Type = short
443 String index = 53
444 Storage class = Info Index = 3
445 Symbol type = Member Value = 128
446
447 Symbol# 7: "_file"
448 Type = char
449 String index = 59
450 Storage class = Info Index = 2
451 Symbol type = Member Value = 144
452
453 Symbol# 8: ""
454 First symbol = 1
455 String index = 0
456 Storage class = Info Index = 1
457 Symbol type = End Value = 0
458
459 Symbol# 9: "/usr/include/stdio.h"
460 First symbol = 0
461 String index = 1
462 Storage class = Text Index = 0
463 Symbol type = End Value = 0
464
465 There are 25 auxiliary table entries, starting at 642.
466
467 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f]
468 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
469 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
470 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0]
471 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1]
472 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
473 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4]
474 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
475 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
476 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0]
477 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0]
478 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
479 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
480 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
481 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
482 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
483 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
484 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
485 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
486 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
487 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
488 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
489 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
490 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
491 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
492
493 There are 0 procedure descriptor entries, starting at 1.
494
495 There are 20 external symbols, starting at 1152
496
497 Symbol# 0: "_iob"
498 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 }
499 String index = 0 Ifd = 1
500 Storage class = Nil Index = 17
501 Symbol type = Global Value = 60
502
503 Symbol# 1: "fopen"
504 String index = 5 Ifd = 1
505 Storage class = Nil Index = 1048575
506 Symbol type = Proc Value = 0
507
508 Symbol# 2: "fdopen"
509 String index = 11 Ifd = 1
510 Storage class = Nil Index = 1048575
511 Symbol type = Proc Value = 0
512
513 Symbol# 3: "freopen"
514 String index = 18 Ifd = 1
515 Storage class = Nil Index = 1048575
516 Symbol type = Proc Value = 0
517
518 Symbol# 4: "popen"
519 String index = 26 Ifd = 1
520 Storage class = Nil Index = 1048575
521 Symbol type = Proc Value = 0
522
523 Symbol# 5: "tmpfile"
524 String index = 32 Ifd = 1
525 Storage class = Nil Index = 1048575
526 Symbol type = Proc Value = 0
527
528 Symbol# 6: "ftell"
529 String index = 40 Ifd = 1
530 Storage class = Nil Index = 1048575
531 Symbol type = Proc Value = 0
532
533 Symbol# 7: "rewind"
534 String index = 46 Ifd = 1
535 Storage class = Nil Index = 1048575
536 Symbol type = Proc Value = 0
537
538 Symbol# 8: "setbuf"
539 String index = 53 Ifd = 1
540 Storage class = Nil Index = 1048575
541 Symbol type = Proc Value = 0
542
543 Symbol# 9: "setbuffer"
544 String index = 60 Ifd = 1
545 Storage class = Nil Index = 1048575
546 Symbol type = Proc Value = 0
547
548 Symbol# 10: "setlinebuf"
549 String index = 70 Ifd = 1
550 Storage class = Nil Index = 1048575
551 Symbol type = Proc Value = 0
552
553 Symbol# 11: "fgets"
554 String index = 81 Ifd = 1
555 Storage class = Nil Index = 1048575
556 Symbol type = Proc Value = 0
557
558 Symbol# 12: "gets"
559 String index = 87 Ifd = 1
560 Storage class = Nil Index = 1048575
561 Symbol type = Proc Value = 0
562
563 Symbol# 13: "ctermid"
564 String index = 92 Ifd = 1
565 Storage class = Nil Index = 1048575
566 Symbol type = Proc Value = 0
567
568 Symbol# 14: "cuserid"
569 String index = 100 Ifd = 1
570 Storage class = Nil Index = 1048575
571 Symbol type = Proc Value = 0
572
573 Symbol# 15: "tempnam"
574 String index = 108 Ifd = 1
575 Storage class = Nil Index = 1048575
576 Symbol type = Proc Value = 0
577
578 Symbol# 16: "tmpnam"
579 String index = 116 Ifd = 1
580 Storage class = Nil Index = 1048575
581 Symbol type = Proc Value = 0
582
583 Symbol# 17: "sprintf"
584 String index = 123 Ifd = 1
585 Storage class = Nil Index = 1048575
586 Symbol type = Proc Value = 0
587
588 Symbol# 18: "main"
589 Type = int
590 String index = 131 Ifd = 0
591 Storage class = Text Index = 1
592 Symbol type = Proc Value = 0
593
594 Symbol# 19: "printf"
595 String index = 136 Ifd = 0
596 Storage class = Undefined Index = 1048575
597 Symbol type = Proc Value = 0
598
599 The following auxiliary table entries were unused:
600
601 #0 0 0x00000000 void
602 #2 8 0x00000008 char
603 #3 16 0x00000010 short
604 #4 24 0x00000018 int
605 #5 32 0x00000020 long
606 #6 40 0x00000028 float
607 #7 44 0x0000002c double
608 #8 12 0x0000000c unsigned char
609 #9 20 0x00000014 unsigned short
610 #10 28 0x0000001c unsigned int
611 #11 36 0x00000024 unsigned long
612 #14 0 0x00000000 void
613 #15 24 0x00000018 int
614 #19 32 0x00000020 long
615 #20 40 0x00000028 float
616 #21 44 0x0000002c double
617 #22 12 0x0000000c unsigned char
618 #23 20 0x00000014 unsigned short
619 #24 28 0x0000001c unsigned int
620 #25 36 0x00000024 unsigned long
621 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 }
622 */
623 \f
624 /* Redefinition of of storage classes as an enumeration for better
625 debugging. */
626
627 typedef enum sc {
628 sc_Nil = scNil, /* no storage class */
629 sc_Text = scText, /* text symbol */
630 sc_Data = scData, /* initialized data symbol */
631 sc_Bss = scBss, /* un-initialized data symbol */
632 sc_Register = scRegister, /* value of symbol is register number */
633 sc_Abs = scAbs, /* value of symbol is absolute */
634 sc_Undefined = scUndefined, /* who knows? */
635 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */
636 sc_Bits = scBits, /* this is a bit field */
637 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */
638 sc_RegImage = scRegImage, /* register value saved on stack */
639 sc_Info = scInfo, /* symbol contains debugger information */
640 sc_UserStruct = scUserStruct, /* addr in struct user for current process */
641 sc_SData = scSData, /* load time only small data */
642 sc_SBss = scSBss, /* load time only small common */
643 sc_RData = scRData, /* load time only read only data */
644 sc_Var = scVar, /* Var parameter (fortran,pascal) */
645 sc_Common = scCommon, /* common variable */
646 sc_SCommon = scSCommon, /* small common */
647 sc_VarRegister = scVarRegister, /* Var parameter in a register */
648 sc_Variant = scVariant, /* Variant record */
649 sc_SUndefined = scSUndefined, /* small undefined(external) data */
650 sc_Init = scInit, /* .init section symbol */
651 sc_Max = scMax /* Max storage class+1 */
652 } sc_t;
653
654 /* Redefinition of symbol type. */
655
656 typedef enum st {
657 st_Nil = stNil, /* Nuthin' special */
658 st_Global = stGlobal, /* external symbol */
659 st_Static = stStatic, /* static */
660 st_Param = stParam, /* procedure argument */
661 st_Local = stLocal, /* local variable */
662 st_Label = stLabel, /* label */
663 st_Proc = stProc, /* " " Procedure */
664 st_Block = stBlock, /* beginning of block */
665 st_End = stEnd, /* end (of anything) */
666 st_Member = stMember, /* member (of anything - struct/union/enum */
667 st_Typedef = stTypedef, /* type definition */
668 st_File = stFile, /* file name */
669 st_RegReloc = stRegReloc, /* register relocation */
670 st_Forward = stForward, /* forwarding address */
671 st_StaticProc = stStaticProc, /* load time only static procs */
672 st_Constant = stConstant, /* const */
673 st_Str = stStr, /* string */
674 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */
675 st_Expr = stExpr, /* 2+2 vs. 4 */
676 st_Type = stType, /* post-coercion SER */
677 st_Max = stMax /* max type+1 */
678 } st_t;
679
680 /* Redefinition of type qualifiers. */
681
682 typedef enum tq {
683 tq_Nil = tqNil, /* bt is what you see */
684 tq_Ptr = tqPtr, /* pointer */
685 tq_Proc = tqProc, /* procedure */
686 tq_Array = tqArray, /* duh */
687 tq_Far = tqFar, /* longer addressing - 8086/8 land */
688 tq_Vol = tqVol, /* volatile */
689 tq_Max = tqMax /* Max type qualifier+1 */
690 } tq_t;
691
692 /* Redefinition of basic types. */
693
694 typedef enum bt {
695 bt_Nil = btNil, /* undefined */
696 bt_Adr = btAdr, /* address - integer same size as pointer */
697 bt_Char = btChar, /* character */
698 bt_UChar = btUChar, /* unsigned character */
699 bt_Short = btShort, /* short */
700 bt_UShort = btUShort, /* unsigned short */
701 bt_Int = btInt, /* int */
702 bt_UInt = btUInt, /* unsigned int */
703 bt_Long = btLong, /* long */
704 bt_ULong = btULong, /* unsigned long */
705 bt_Float = btFloat, /* float (real) */
706 bt_Double = btDouble, /* Double (real) */
707 bt_Struct = btStruct, /* Structure (Record) */
708 bt_Union = btUnion, /* Union (variant) */
709 bt_Enum = btEnum, /* Enumerated */
710 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */
711 bt_Range = btRange, /* subrange of int */
712 bt_Set = btSet, /* pascal sets */
713 bt_Complex = btComplex, /* fortran complex */
714 bt_DComplex = btDComplex, /* fortran double complex */
715 bt_Indirect = btIndirect, /* forward or unnamed typedef */
716 bt_FixedDec = btFixedDec, /* Fixed Decimal */
717 bt_FloatDec = btFloatDec, /* Float Decimal */
718 bt_String = btString, /* Varying Length Character String */
719 bt_Bit = btBit, /* Aligned Bit String */
720 bt_Picture = btPicture, /* Picture */
721 bt_Void = btVoid, /* Void */
722 bt_Max = btMax /* Max basic type+1 */
723 } bt_t;
724
725 #define N_TQ itqMax
726
727 /* States for whether to hash type or not. */
728 typedef enum hash_state {
729 hash_no = 0, /* don't hash type */
730 hash_yes = 1, /* ok to hash type, or use previous hash */
731 hash_record = 2 /* ok to record hash, but don't use prev. */
732 } hash_state_t;
733
734 /* Types of different sized allocation requests. */
735 enum alloc_type {
736 alloc_type_none, /* dummy value */
737 alloc_type_scope, /* nested scopes linked list */
738 alloc_type_vlinks, /* glue linking pages in varray */
739 alloc_type_shash, /* string hash element */
740 alloc_type_thash, /* type hash element */
741 alloc_type_tag, /* struct/union/tag element */
742 alloc_type_forward, /* element to hold unknown tag */
743 alloc_type_thead, /* head of type hash list */
744 alloc_type_varray, /* general varray allocation */
745 alloc_type_lineno, /* line number list */
746 alloc_type_last /* last+1 element for array bounds */
747 };
748
749 /* Types of auxiliary type information. */
750 enum aux_type {
751 aux_tir, /* TIR type information */
752 aux_rndx, /* relative index into symbol table */
753 aux_dnLow, /* low dimension */
754 aux_dnHigh, /* high dimension */
755 aux_isym, /* symbol table index (end of proc) */
756 aux_iss, /* index into string space (not used) */
757 aux_width, /* width for non-default sized struc fields */
758 aux_count /* count of ranges for variant arm */
759 };
760 \f
761 /* Structures to provide n-number of virtual arrays, each of which can
762 grow linearly, and which are written in the object file as
763 sequential pages. On systems with a BSD malloc, the
764 MAX_CLUSTER_PAGES should be 1 less than a power of two, since
765 malloc adds it's overhead, and rounds up to the next power of 2.
766 Pages are linked together via a linked list.
767
768 If PAGE_SIZE is > 4096, the string length in the shash_t structure
769 can't be represented (assuming there are strings > 4096 bytes). */
770
771 #ifndef PAGE_SIZE
772 #define PAGE_SIZE 4096 /* size of varray pages */
773 #endif
774
775 #define PAGE_USIZE ((unsigned long) PAGE_SIZE)
776
777
778 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */
779 #define MAX_CLUSTER_PAGES 63
780 #endif
781
782 /* Linked list connecting separate page allocations. */
783 typedef struct vlinks {
784 struct vlinks *prev; /* previous set of pages */
785 struct vlinks *next; /* next set of pages */
786 union page *datum; /* start of page */
787 unsigned long start_index; /* starting index # of page */
788 } vlinks_t;
789
790
791 /* Virtual array header. */
792 typedef struct varray {
793 vlinks_t *first; /* first page link */
794 vlinks_t *last; /* last page link */
795 unsigned long num_allocated; /* # objects allocated */
796 unsigned short object_size; /* size in bytes of each object */
797 unsigned short objects_per_page; /* # objects that can fit on a page */
798 unsigned short objects_last_page; /* # objects allocated on last page */
799 } varray_t;
800
801 #ifndef MALLOC_CHECK
802 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type))
803 #else
804 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE)
805 #endif
806
807 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \
808 (vlinks_t *)0, /* first */ \
809 (vlinks_t *)0, /* last */ \
810 0, /* num_allocated */ \
811 sizeof (type), /* object_size */ \
812 OBJECTS_PER_PAGE (type), /* objects_per_page */ \
813 OBJECTS_PER_PAGE (type), /* objects_last_page */ \
814 }
815
816
817 /* Master type for indexes within the symbol table. */
818 typedef unsigned long symint_t;
819
820
821 /* Linked list support for nested scopes (file, block, structure, etc.). */
822 typedef struct scope {
823 struct scope *prev; /* previous scope level */
824 struct scope *free; /* free list pointer */
825 struct localsym *lsym; /* pointer to local symbol node */
826 st_t type; /* type of the node */
827 } scope_t;
828
829
830 /* For a local symbol we store a gas symbol as well as the debugging
831 information we generate. The gas symbol will be NULL if this is
832 only a debugging symbol. */
833 typedef struct localsym {
834 const char *name; /* symbol name */
835 symbolS *as_sym; /* symbol as seen by gas */
836 bfd_vma addend; /* addend to as_sym value */
837 struct efdr *file_ptr; /* file pointer */
838 struct ecoff_proc *proc_ptr; /* proc pointer */
839 struct localsym *begin_ptr; /* symbol at start of block */
840 struct ecoff_aux *index_ptr; /* index value to be filled in */
841 struct forward *forward_ref; /* forward references to this symbol */
842 long sym_index; /* final symbol index */
843 EXTR ecoff_sym; /* ECOFF debugging symbol */
844 } localsym_t;
845
846
847 /* For aux information we keep the type and the data. */
848 typedef struct ecoff_aux {
849 enum aux_type type; /* aux type */
850 AUXU data; /* aux data */
851 } aux_t;
852
853 /* For a procedure we store the gas symbol as well as the PDR
854 debugging information. */
855 typedef struct ecoff_proc {
856 localsym_t *sym; /* associated symbol */
857 PDR pdr; /* ECOFF debugging info */
858 } proc_t;
859
860 /* Number of proc_t structures allocated. */
861 static unsigned long proc_cnt;
862
863
864 /* Forward reference list for tags referenced, but not yet defined. */
865 typedef struct forward {
866 struct forward *next; /* next forward reference */
867 struct forward *free; /* free list pointer */
868 aux_t *ifd_ptr; /* pointer to store file index */
869 aux_t *index_ptr; /* pointer to store symbol index */
870 } forward_t;
871
872
873 /* Linked list support for tags. The first tag in the list is always
874 the current tag for that block. */
875 typedef struct tag {
876 struct tag *free; /* free list pointer */
877 struct shash *hash_ptr; /* pointer to the hash table head */
878 struct tag *same_name; /* tag with same name in outer scope */
879 struct tag *same_block; /* next tag defined in the same block. */
880 struct forward *forward_ref; /* list of forward references */
881 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
882 symint_t ifd; /* file # tag defined in */
883 localsym_t *sym; /* file's local symbols */
884 } tag_t;
885
886
887 /* Head of a block's linked list of tags. */
888 typedef struct thead {
889 struct thead *prev; /* previous block */
890 struct thead *free; /* free list pointer */
891 struct tag *first_tag; /* first tag in block defined */
892 } thead_t;
893
894
895 /* Union containing pointers to each the small structures which are freed up. */
896 typedef union small_free {
897 scope_t *f_scope; /* scope structure */
898 thead_t *f_thead; /* tag head structure */
899 tag_t *f_tag; /* tag element structure */
900 forward_t *f_forward; /* forward tag reference */
901 } small_free_t;
902
903
904 /* String hash table entry. */
905
906 typedef struct shash {
907 char *string; /* string we are hashing */
908 symint_t indx; /* index within string table */
909 EXTR *esym_ptr; /* global symbol pointer */
910 localsym_t *sym_ptr; /* local symbol pointer */
911 localsym_t *end_ptr; /* symbol pointer to end block */
912 tag_t *tag_ptr; /* tag pointer */
913 proc_t *proc_ptr; /* procedure descriptor pointer */
914 } shash_t;
915
916
917 /* Type hash table support. The size of the hash table must fit
918 within a page with the other extended file descriptor information.
919 Because unique types which are hashed are fewer in number than
920 strings, we use a smaller hash value. */
921
922 #define HASHBITS 30
923
924 #ifndef THASH_SIZE
925 #define THASH_SIZE 113
926 #endif
927
928 typedef struct thash {
929 struct thash *next; /* next hash value */
930 AUXU type; /* type we are hashing */
931 symint_t indx; /* index within string table */
932 } thash_t;
933
934
935 /* Extended file descriptor that contains all of the support necessary
936 to add things to each file separately. */
937 typedef struct efdr {
938 FDR fdr; /* File header to be written out */
939 FDR *orig_fdr; /* original file header */
940 char *name; /* filename */
941 int fake; /* whether this is faked .file */
942 symint_t void_type; /* aux. pointer to 'void' type */
943 symint_t int_type; /* aux. pointer to 'int' type */
944 scope_t *cur_scope; /* current nested scopes */
945 symint_t file_index; /* current file number */
946 int nested_scopes; /* # nested scopes */
947 varray_t strings; /* local strings */
948 varray_t symbols; /* local symbols */
949 varray_t procs; /* procedures */
950 varray_t aux_syms; /* auxiliary symbols */
951 struct efdr *next_file; /* next file descriptor */
952 /* string/type hash tables */
953 struct hash_control *str_hash; /* string hash table */
954 thash_t *thash_head[THASH_SIZE];
955 } efdr_t;
956
957 /* Pre-initialized extended file structure. */
958 static const efdr_t init_file =
959 {
960 { /* FDR structure */
961 0, /* adr: memory address of beginning of file */
962 0, /* rss: file name (of source, if known) */
963 0, /* issBase: file's string space */
964 0, /* cbSs: number of bytes in the ss */
965 0, /* isymBase: beginning of symbols */
966 0, /* csym: count file's of symbols */
967 0, /* ilineBase: file's line symbols */
968 0, /* cline: count of file's line symbols */
969 0, /* ioptBase: file's optimization entries */
970 0, /* copt: count of file's optimization entries */
971 0, /* ipdFirst: start of procedures for this file */
972 0, /* cpd: count of procedures for this file */
973 0, /* iauxBase: file's auxiliary entries */
974 0, /* caux: count of file's auxiliary entries */
975 0, /* rfdBase: index into the file indirect table */
976 0, /* crfd: count file indirect entries */
977 langC, /* lang: language for this file */
978 1, /* fMerge: whether this file can be merged */
979 0, /* fReadin: true if read in (not just created) */
980 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */
981 GLEVEL_2, /* glevel: level this file was compiled with */
982 0, /* reserved: reserved for future use */
983 0, /* cbLineOffset: byte offset from header for this file ln's */
984 0, /* cbLine: size of lines for this file */
985 },
986
987 (FDR *)0, /* orig_fdr: original file header pointer */
988 (char *)0, /* name: pointer to filename */
989 0, /* fake: whether this is a faked .file */
990 0, /* void_type: ptr to aux node for void type */
991 0, /* int_type: ptr to aux node for int type */
992 (scope_t *)0, /* cur_scope: current scope being processed */
993 0, /* file_index: current file # */
994 0, /* nested_scopes: # nested scopes */
995 INIT_VARRAY (char), /* strings: local string varray */
996 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */
997 INIT_VARRAY (proc_t), /* procs: procedure varray */
998 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */
999
1000 (struct efdr *)0, /* next_file: next file structure */
1001
1002 (struct hash_control *)0, /* str_hash: string hash table */
1003 { 0 }, /* thash_head: type hash table */
1004 };
1005
1006
1007 static efdr_t *first_file; /* first file descriptor */
1008 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */
1009
1010
1011 /* Line number information is kept in a list until the assembly is
1012 finished. */
1013 typedef struct lineno_list {
1014 struct lineno_list *next; /* next element in list */
1015 efdr_t *file; /* file this line is in */
1016 proc_t *proc; /* procedure this line is in */
1017 fragS *frag; /* fragment this line number is in */
1018 unsigned long paddr; /* offset within fragment */
1019 long lineno; /* actual line number */
1020 } lineno_list_t;
1021
1022 static lineno_list_t *first_lineno;
1023 static lineno_list_t *last_lineno;
1024 static lineno_list_t **last_lineno_ptr = &first_lineno;
1025
1026 /* Sometimes there will be some .loc statements before a .ent. We
1027 keep them in this list so that we can fill in the procedure pointer
1028 after we see the .ent. */
1029 static lineno_list_t *noproc_lineno;
1030
1031 /* Union of various things that are held in pages. */
1032 typedef union page {
1033 char byte [ PAGE_SIZE ];
1034 unsigned char ubyte [ PAGE_SIZE ];
1035 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ];
1036 FDR ofile [ PAGE_SIZE / sizeof (FDR) ];
1037 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ];
1038 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ];
1039 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ];
1040 DNR dense [ PAGE_SIZE / sizeof (DNR) ];
1041 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ];
1042 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ];
1043 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ];
1044 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ];
1045 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ];
1046 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ];
1047 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ];
1048 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ];
1049 } page_type;
1050
1051
1052 /* Structure holding allocation information for small sized structures. */
1053 typedef struct alloc_info {
1054 char *alloc_name; /* name of this allocation type (must be first) */
1055 page_type *cur_page; /* current page being allocated from */
1056 small_free_t free_list; /* current free list if any */
1057 int unallocated; /* number of elements unallocated on page */
1058 int total_alloc; /* total number of allocations */
1059 int total_free; /* total number of frees */
1060 int total_pages; /* total number of pages allocated */
1061 } alloc_info_t;
1062
1063
1064 /* Type information collected together. */
1065 typedef struct type_info {
1066 bt_t basic_type; /* basic type */
1067 int orig_type; /* original COFF-based type */
1068 int num_tq; /* # type qualifiers */
1069 int num_dims; /* # dimensions */
1070 int num_sizes; /* # sizes */
1071 int extra_sizes; /* # extra sizes not tied with dims */
1072 tag_t * tag_ptr; /* tag pointer */
1073 int bitfield; /* symbol is a bitfield */
1074 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/
1075 symint_t dimensions [N_TQ]; /* dimensions for each array */
1076 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of
1077 struct/union/enum + bitfield size */
1078 } type_info_t;
1079
1080 /* Pre-initialized type_info struct. */
1081 static const type_info_t type_info_init = {
1082 bt_Nil, /* basic type */
1083 T_NULL, /* original COFF-based type */
1084 0, /* # type qualifiers */
1085 0, /* # dimensions */
1086 0, /* # sizes */
1087 0, /* sizes not tied with dims */
1088 NULL, /* ptr to tag */
1089 0, /* bitfield */
1090 { /* type qualifiers */
1091 tq_Nil,
1092 tq_Nil,
1093 tq_Nil,
1094 tq_Nil,
1095 tq_Nil,
1096 tq_Nil,
1097 },
1098 { /* dimensions */
1099 0,
1100 0,
1101 0,
1102 0,
1103 0,
1104 0
1105 },
1106 { /* sizes */
1107 0,
1108 0,
1109 0,
1110 0,
1111 0,
1112 0,
1113 0,
1114 0,
1115 },
1116 };
1117
1118 /* Global hash table for the tags table and global table for file
1119 descriptors. */
1120
1121 static varray_t file_desc = INIT_VARRAY (efdr_t);
1122
1123 static struct hash_control *tag_hash;
1124
1125 /* Static types for int and void. Also, remember the last function's
1126 type (which is set up when we encounter the declaration for the
1127 function, and used when the end block for the function is emitted. */
1128
1129 static type_info_t int_type_info;
1130 static type_info_t void_type_info;
1131 static type_info_t last_func_type_info;
1132 static symbolS *last_func_sym_value;
1133
1134
1135 /* Convert COFF basic type to ECOFF basic type. The T_NULL type
1136 really should use bt_Void, but this causes the current ecoff GDB to
1137 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS
1138 2.0) doesn't understand it, even though the compiler generates it.
1139 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler
1140 suite, but for now go with what works.
1141
1142 It would make sense for the .type and .scl directives to use the
1143 ECOFF numbers directly, rather than using the COFF numbers and
1144 mapping them. Unfortunately, this is historically what mips-tfile
1145 expects, and changing gcc now would be a considerable pain (the
1146 native compiler generates debugging information internally, rather
1147 than via the assembler, so it will never use .type or .scl). */
1148
1149 static const bt_t map_coff_types[] = {
1150 bt_Nil, /* T_NULL */
1151 bt_Nil, /* T_ARG */
1152 bt_Char, /* T_CHAR */
1153 bt_Short, /* T_SHORT */
1154 bt_Int, /* T_INT */
1155 bt_Long, /* T_LONG */
1156 bt_Float, /* T_FLOAT */
1157 bt_Double, /* T_DOUBLE */
1158 bt_Struct, /* T_STRUCT */
1159 bt_Union, /* T_UNION */
1160 bt_Enum, /* T_ENUM */
1161 bt_Enum, /* T_MOE */
1162 bt_UChar, /* T_UCHAR */
1163 bt_UShort, /* T_USHORT */
1164 bt_UInt, /* T_UINT */
1165 bt_ULong /* T_ULONG */
1166 };
1167
1168 /* Convert COFF storage class to ECOFF storage class. */
1169 static const sc_t map_coff_storage[] = {
1170 sc_Nil, /* 0: C_NULL */
1171 sc_Abs, /* 1: C_AUTO auto var */
1172 sc_Undefined, /* 2: C_EXT external */
1173 sc_Data, /* 3: C_STAT static */
1174 sc_Register, /* 4: C_REG register */
1175 sc_Undefined, /* 5: C_EXTDEF ??? */
1176 sc_Text, /* 6: C_LABEL label */
1177 sc_Text, /* 7: C_ULABEL user label */
1178 sc_Info, /* 8: C_MOS member of struct */
1179 sc_Abs, /* 9: C_ARG argument */
1180 sc_Info, /* 10: C_STRTAG struct tag */
1181 sc_Info, /* 11: C_MOU member of union */
1182 sc_Info, /* 12: C_UNTAG union tag */
1183 sc_Info, /* 13: C_TPDEF typedef */
1184 sc_Data, /* 14: C_USTATIC ??? */
1185 sc_Info, /* 15: C_ENTAG enum tag */
1186 sc_Info, /* 16: C_MOE member of enum */
1187 sc_Register, /* 17: C_REGPARM register parameter */
1188 sc_Bits, /* 18; C_FIELD bitfield */
1189 sc_Nil, /* 19 */
1190 sc_Nil, /* 20 */
1191 sc_Nil, /* 21 */
1192 sc_Nil, /* 22 */
1193 sc_Nil, /* 23 */
1194 sc_Nil, /* 24 */
1195 sc_Nil, /* 25 */
1196 sc_Nil, /* 26 */
1197 sc_Nil, /* 27 */
1198 sc_Nil, /* 28 */
1199 sc_Nil, /* 29 */
1200 sc_Nil, /* 30 */
1201 sc_Nil, /* 31 */
1202 sc_Nil, /* 32 */
1203 sc_Nil, /* 33 */
1204 sc_Nil, /* 34 */
1205 sc_Nil, /* 35 */
1206 sc_Nil, /* 36 */
1207 sc_Nil, /* 37 */
1208 sc_Nil, /* 38 */
1209 sc_Nil, /* 39 */
1210 sc_Nil, /* 40 */
1211 sc_Nil, /* 41 */
1212 sc_Nil, /* 42 */
1213 sc_Nil, /* 43 */
1214 sc_Nil, /* 44 */
1215 sc_Nil, /* 45 */
1216 sc_Nil, /* 46 */
1217 sc_Nil, /* 47 */
1218 sc_Nil, /* 48 */
1219 sc_Nil, /* 49 */
1220 sc_Nil, /* 50 */
1221 sc_Nil, /* 51 */
1222 sc_Nil, /* 52 */
1223 sc_Nil, /* 53 */
1224 sc_Nil, /* 54 */
1225 sc_Nil, /* 55 */
1226 sc_Nil, /* 56 */
1227 sc_Nil, /* 57 */
1228 sc_Nil, /* 58 */
1229 sc_Nil, /* 59 */
1230 sc_Nil, /* 60 */
1231 sc_Nil, /* 61 */
1232 sc_Nil, /* 62 */
1233 sc_Nil, /* 63 */
1234 sc_Nil, /* 64 */
1235 sc_Nil, /* 65 */
1236 sc_Nil, /* 66 */
1237 sc_Nil, /* 67 */
1238 sc_Nil, /* 68 */
1239 sc_Nil, /* 69 */
1240 sc_Nil, /* 70 */
1241 sc_Nil, /* 71 */
1242 sc_Nil, /* 72 */
1243 sc_Nil, /* 73 */
1244 sc_Nil, /* 74 */
1245 sc_Nil, /* 75 */
1246 sc_Nil, /* 76 */
1247 sc_Nil, /* 77 */
1248 sc_Nil, /* 78 */
1249 sc_Nil, /* 79 */
1250 sc_Nil, /* 80 */
1251 sc_Nil, /* 81 */
1252 sc_Nil, /* 82 */
1253 sc_Nil, /* 83 */
1254 sc_Nil, /* 84 */
1255 sc_Nil, /* 85 */
1256 sc_Nil, /* 86 */
1257 sc_Nil, /* 87 */
1258 sc_Nil, /* 88 */
1259 sc_Nil, /* 89 */
1260 sc_Nil, /* 90 */
1261 sc_Nil, /* 91 */
1262 sc_Nil, /* 92 */
1263 sc_Nil, /* 93 */
1264 sc_Nil, /* 94 */
1265 sc_Nil, /* 95 */
1266 sc_Nil, /* 96 */
1267 sc_Nil, /* 97 */
1268 sc_Nil, /* 98 */
1269 sc_Nil, /* 99 */
1270 sc_Text, /* 100: C_BLOCK block start/end */
1271 sc_Text, /* 101: C_FCN function start/end */
1272 sc_Info, /* 102: C_EOS end of struct/union/enum */
1273 sc_Nil, /* 103: C_FILE file start */
1274 sc_Nil, /* 104: C_LINE line number */
1275 sc_Nil, /* 105: C_ALIAS combined type info */
1276 sc_Nil, /* 106: C_HIDDEN ??? */
1277 };
1278
1279 /* Convert COFF storage class to ECOFF symbol type. */
1280 static const st_t map_coff_sym_type[] = {
1281 st_Nil, /* 0: C_NULL */
1282 st_Local, /* 1: C_AUTO auto var */
1283 st_Global, /* 2: C_EXT external */
1284 st_Static, /* 3: C_STAT static */
1285 st_Local, /* 4: C_REG register */
1286 st_Global, /* 5: C_EXTDEF ??? */
1287 st_Label, /* 6: C_LABEL label */
1288 st_Label, /* 7: C_ULABEL user label */
1289 st_Member, /* 8: C_MOS member of struct */
1290 st_Param, /* 9: C_ARG argument */
1291 st_Block, /* 10: C_STRTAG struct tag */
1292 st_Member, /* 11: C_MOU member of union */
1293 st_Block, /* 12: C_UNTAG union tag */
1294 st_Typedef, /* 13: C_TPDEF typedef */
1295 st_Static, /* 14: C_USTATIC ??? */
1296 st_Block, /* 15: C_ENTAG enum tag */
1297 st_Member, /* 16: C_MOE member of enum */
1298 st_Param, /* 17: C_REGPARM register parameter */
1299 st_Member, /* 18; C_FIELD bitfield */
1300 st_Nil, /* 19 */
1301 st_Nil, /* 20 */
1302 st_Nil, /* 21 */
1303 st_Nil, /* 22 */
1304 st_Nil, /* 23 */
1305 st_Nil, /* 24 */
1306 st_Nil, /* 25 */
1307 st_Nil, /* 26 */
1308 st_Nil, /* 27 */
1309 st_Nil, /* 28 */
1310 st_Nil, /* 29 */
1311 st_Nil, /* 30 */
1312 st_Nil, /* 31 */
1313 st_Nil, /* 32 */
1314 st_Nil, /* 33 */
1315 st_Nil, /* 34 */
1316 st_Nil, /* 35 */
1317 st_Nil, /* 36 */
1318 st_Nil, /* 37 */
1319 st_Nil, /* 38 */
1320 st_Nil, /* 39 */
1321 st_Nil, /* 40 */
1322 st_Nil, /* 41 */
1323 st_Nil, /* 42 */
1324 st_Nil, /* 43 */
1325 st_Nil, /* 44 */
1326 st_Nil, /* 45 */
1327 st_Nil, /* 46 */
1328 st_Nil, /* 47 */
1329 st_Nil, /* 48 */
1330 st_Nil, /* 49 */
1331 st_Nil, /* 50 */
1332 st_Nil, /* 51 */
1333 st_Nil, /* 52 */
1334 st_Nil, /* 53 */
1335 st_Nil, /* 54 */
1336 st_Nil, /* 55 */
1337 st_Nil, /* 56 */
1338 st_Nil, /* 57 */
1339 st_Nil, /* 58 */
1340 st_Nil, /* 59 */
1341 st_Nil, /* 60 */
1342 st_Nil, /* 61 */
1343 st_Nil, /* 62 */
1344 st_Nil, /* 63 */
1345 st_Nil, /* 64 */
1346 st_Nil, /* 65 */
1347 st_Nil, /* 66 */
1348 st_Nil, /* 67 */
1349 st_Nil, /* 68 */
1350 st_Nil, /* 69 */
1351 st_Nil, /* 70 */
1352 st_Nil, /* 71 */
1353 st_Nil, /* 72 */
1354 st_Nil, /* 73 */
1355 st_Nil, /* 74 */
1356 st_Nil, /* 75 */
1357 st_Nil, /* 76 */
1358 st_Nil, /* 77 */
1359 st_Nil, /* 78 */
1360 st_Nil, /* 79 */
1361 st_Nil, /* 80 */
1362 st_Nil, /* 81 */
1363 st_Nil, /* 82 */
1364 st_Nil, /* 83 */
1365 st_Nil, /* 84 */
1366 st_Nil, /* 85 */
1367 st_Nil, /* 86 */
1368 st_Nil, /* 87 */
1369 st_Nil, /* 88 */
1370 st_Nil, /* 89 */
1371 st_Nil, /* 90 */
1372 st_Nil, /* 91 */
1373 st_Nil, /* 92 */
1374 st_Nil, /* 93 */
1375 st_Nil, /* 94 */
1376 st_Nil, /* 95 */
1377 st_Nil, /* 96 */
1378 st_Nil, /* 97 */
1379 st_Nil, /* 98 */
1380 st_Nil, /* 99 */
1381 st_Block, /* 100: C_BLOCK block start/end */
1382 st_Proc, /* 101: C_FCN function start/end */
1383 st_End, /* 102: C_EOS end of struct/union/enum */
1384 st_File, /* 103: C_FILE file start */
1385 st_Nil, /* 104: C_LINE line number */
1386 st_Nil, /* 105: C_ALIAS combined type info */
1387 st_Nil, /* 106: C_HIDDEN ??? */
1388 };
1389
1390
1391 /* Keep track of different sized allocation requests. */
1392 static alloc_info_t alloc_counts[ (int)alloc_type_last ];
1393 \f
1394 /* Record whether we have seen any debugging information. */
1395 int ecoff_debugging_seen = 0;
1396
1397 /* Various statics. */
1398 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */
1399 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */
1400 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */
1401 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */
1402 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */
1403 #ifdef ECOFF_DEBUG
1404 static int debug = 0; /* trace functions */
1405 #endif
1406 static int stabs_seen = 0; /* != 0 if stabs have been seen */
1407
1408 static int current_file_idx;
1409 static const char *current_stabs_filename;
1410
1411 /* Pseudo symbol to use when putting stabs into the symbol table. */
1412 #ifndef STABS_SYMBOL
1413 #define STABS_SYMBOL "@stabs"
1414 #endif
1415
1416 static char stabs_symbol[] = STABS_SYMBOL;
1417 \f
1418 /* Prototypes for functions defined in this file. */
1419
1420 static void add_varray_page PARAMS ((varray_t *vp));
1421 static symint_t add_string PARAMS ((varray_t *vp,
1422 struct hash_control *hash_tbl,
1423 const char *str,
1424 shash_t **ret_hash));
1425 static localsym_t *add_ecoff_symbol PARAMS ((const char *str, st_t type,
1426 sc_t storage, symbolS *sym,
1427 bfd_vma addend, symint_t value,
1428 symint_t indx));
1429 static symint_t add_aux_sym_symint PARAMS ((symint_t aux_word));
1430 static symint_t add_aux_sym_rndx PARAMS ((int file_index,
1431 symint_t sym_index));
1432 static symint_t add_aux_sym_tir PARAMS ((type_info_t *t,
1433 hash_state_t state,
1434 thash_t **hash_tbl));
1435 static tag_t *get_tag PARAMS ((const char *tag, localsym_t *sym,
1436 bt_t basic_type));
1437 static void add_unknown_tag PARAMS ((tag_t *ptag));
1438 static void add_procedure PARAMS ((char *func));
1439 static void add_file PARAMS ((const char *file_name, int indx, int fake));
1440 #ifdef ECOFF_DEBUG
1441 static char *sc_to_string PARAMS ((sc_t storage_class));
1442 static char *st_to_string PARAMS ((st_t symbol_type));
1443 #endif
1444 static void mark_stabs PARAMS ((int));
1445 static char *ecoff_add_bytes PARAMS ((char **buf, char **bufend,
1446 char *bufptr, unsigned long need));
1447 static unsigned long ecoff_padding_adjust
1448 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1449 unsigned long offset, char **bufptrptr));
1450 static unsigned long ecoff_build_lineno
1451 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1452 unsigned long offset, long *linecntptr));
1453 static unsigned long ecoff_build_symbols
1454 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1455 unsigned long offset));
1456 static unsigned long ecoff_build_procs
1457 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1458 unsigned long offset));
1459 static unsigned long ecoff_build_aux
1460 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1461 unsigned long offset));
1462 static unsigned long ecoff_build_strings PARAMS ((char **buf, char **bufend,
1463 unsigned long offset,
1464 varray_t *vp));
1465 static unsigned long ecoff_build_ss
1466 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1467 unsigned long offset));
1468 static unsigned long ecoff_build_fdr
1469 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1470 unsigned long offset));
1471 static void ecoff_setup_ext PARAMS ((void));
1472 static page_type *allocate_cluster PARAMS ((unsigned long npages));
1473 static page_type *allocate_page PARAMS ((void));
1474 static scope_t *allocate_scope PARAMS ((void));
1475 static void free_scope PARAMS ((scope_t *ptr));
1476 static vlinks_t *allocate_vlinks PARAMS ((void));
1477 static shash_t *allocate_shash PARAMS ((void));
1478 static thash_t *allocate_thash PARAMS ((void));
1479 static tag_t *allocate_tag PARAMS ((void));
1480 static void free_tag PARAMS ((tag_t *ptr));
1481 static forward_t *allocate_forward PARAMS ((void));
1482 static thead_t *allocate_thead PARAMS ((void));
1483 static void free_thead PARAMS ((thead_t *ptr));
1484 static lineno_list_t *allocate_lineno_list PARAMS ((void));
1485 static void generate_ecoff_stab PARAMS ((int, const char *, int, int, int));
1486 \f
1487 /* This function should be called when the assembler starts up. */
1488
1489 void
1490 ecoff_read_begin_hook ()
1491 {
1492 tag_hash = hash_new ();
1493 top_tag_head = allocate_thead ();
1494 top_tag_head->first_tag = (tag_t *) NULL;
1495 top_tag_head->free = (thead_t *) NULL;
1496 top_tag_head->prev = cur_tag_head;
1497 cur_tag_head = top_tag_head;
1498 }
1499
1500 /* This function should be called when a symbol is created. */
1501
1502 void
1503 ecoff_symbol_new_hook (symbolP)
1504 symbolS *symbolP;
1505 {
1506 /* Make sure that we have a file pointer, but only if we have seen a
1507 file. If we haven't seen a file, then this is a probably special
1508 symbol created by md_begin which may required special handling at
1509 some point. Creating a dummy file with a dummy name is certainly
1510 wrong. */
1511 if (cur_file_ptr == (efdr_t *) NULL
1512 && seen_at_least_1_file ())
1513 add_file ((const char *) NULL, 0, 1);
1514 symbolP->ecoff_file = cur_file_ptr;
1515 symbolP->ecoff_symbol = NULL;
1516 symbolP->ecoff_extern_size = 0;
1517 }
1518 \f
1519 /* Add a page to a varray object. */
1520
1521 static void
1522 add_varray_page (vp)
1523 varray_t *vp; /* varray to add page to */
1524 {
1525 vlinks_t *new_links = allocate_vlinks ();
1526
1527 #ifdef MALLOC_CHECK
1528 if (vp->object_size > 1)
1529 new_links->datum = (page_type *) xcalloc (1, vp->object_size);
1530 else
1531 #endif
1532 new_links->datum = allocate_page ();
1533
1534 alloc_counts[(int)alloc_type_varray].total_alloc++;
1535 alloc_counts[(int)alloc_type_varray].total_pages++;
1536
1537 new_links->start_index = vp->num_allocated;
1538 vp->objects_last_page = 0;
1539
1540 if (vp->first == (vlinks_t *) NULL) /* first allocation? */
1541 vp->first = vp->last = new_links;
1542 else
1543 { /* 2nd or greater allocation */
1544 new_links->prev = vp->last;
1545 vp->last->next = new_links;
1546 vp->last = new_links;
1547 }
1548 }
1549 \f
1550 /* Add a string (and null pad) to one of the string tables. */
1551
1552 static symint_t
1553 add_string (vp, hash_tbl, str, ret_hash)
1554 varray_t *vp; /* string obstack */
1555 struct hash_control *hash_tbl; /* ptr to hash table */
1556 const char *str; /* string */
1557 shash_t **ret_hash; /* return hash pointer */
1558 {
1559 register unsigned long len = strlen (str);
1560 register shash_t *hash_ptr;
1561
1562 if (len >= PAGE_USIZE)
1563 as_fatal ("String too big (%lu bytes)", len);
1564
1565 hash_ptr = (shash_t *) hash_find (hash_tbl, str);
1566 if (hash_ptr == (shash_t *) NULL)
1567 {
1568 register const char *err;
1569
1570 if (vp->objects_last_page + len >= PAGE_USIZE)
1571 {
1572 vp->num_allocated =
1573 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE;
1574 add_varray_page (vp);
1575 }
1576
1577 hash_ptr = allocate_shash ();
1578 hash_ptr->indx = vp->num_allocated;
1579
1580 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page];
1581
1582 vp->objects_last_page += len + 1;
1583 vp->num_allocated += len + 1;
1584
1585 strcpy (hash_ptr->string, str);
1586
1587 err = hash_insert (hash_tbl, str, (char *) hash_ptr);
1588 if (err)
1589 as_fatal ("Inserting \"%s\" into string hash table: %s",
1590 str, err);
1591 }
1592
1593 if (ret_hash != (shash_t **) NULL)
1594 *ret_hash = hash_ptr;
1595
1596 return hash_ptr->indx;
1597 }
1598 \f
1599 /* Add debugging information for a symbol. */
1600
1601 static localsym_t *
1602 add_ecoff_symbol (str, type, storage, sym_value, addend, value, indx)
1603 const char *str; /* symbol name */
1604 st_t type; /* symbol type */
1605 sc_t storage; /* storage class */
1606 symbolS *sym_value; /* associated symbol. */
1607 bfd_vma addend; /* addend to sym_value. */
1608 symint_t value; /* value of symbol */
1609 symint_t indx; /* index to local/aux. syms */
1610 {
1611 localsym_t *psym;
1612 register scope_t *pscope;
1613 register thead_t *ptag_head;
1614 register tag_t *ptag;
1615 register tag_t *ptag_next;
1616 register varray_t *vp;
1617 register int scope_delta = 0;
1618 shash_t *hash_ptr = (shash_t *) NULL;
1619
1620 if (cur_file_ptr == (efdr_t *) NULL)
1621 as_fatal ("no current file pointer");
1622
1623 vp = &cur_file_ptr->symbols;
1624
1625 if (vp->objects_last_page == vp->objects_per_page)
1626 add_varray_page (vp);
1627
1628 psym = &vp->last->datum->sym[ vp->objects_last_page++ ];
1629
1630 if (str == (const char *) NULL && sym_value != (symbolS *) NULL)
1631 psym->name = S_GET_NAME (sym_value);
1632 else
1633 psym->name = str;
1634 psym->as_sym = sym_value;
1635 if (sym_value != (symbolS *) NULL)
1636 sym_value->ecoff_symbol = psym;
1637 psym->addend = addend;
1638 psym->file_ptr = cur_file_ptr;
1639 psym->proc_ptr = cur_proc_ptr;
1640 psym->begin_ptr = (localsym_t *) NULL;
1641 psym->index_ptr = (aux_t *) NULL;
1642 psym->forward_ref = (forward_t *) NULL;
1643 psym->sym_index = -1;
1644 memset (&psym->ecoff_sym, 0, sizeof (EXTR));
1645 psym->ecoff_sym.asym.value = value;
1646 psym->ecoff_sym.asym.st = (unsigned) type;
1647 psym->ecoff_sym.asym.sc = (unsigned) storage;
1648 psym->ecoff_sym.asym.index = indx;
1649
1650 /* If there is an associated symbol, we wait until the end of the
1651 assembly before deciding where to put the name (it may be just an
1652 external symbol). Otherwise, this is just a debugging symbol and
1653 the name should go with the current file. */
1654 if (sym_value == (symbolS *) NULL)
1655 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL)
1656 ? 0
1657 : add_string (&cur_file_ptr->strings,
1658 cur_file_ptr->str_hash,
1659 str,
1660 &hash_ptr));
1661
1662 ++vp->num_allocated;
1663
1664 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym))
1665 return psym;
1666
1667 /* Save the symbol within the hash table if this is a static
1668 item, and it has a name. */
1669 if (hash_ptr != (shash_t *) NULL
1670 && (type == st_Global || type == st_Static || type == st_Label
1671 || type == st_Proc || type == st_StaticProc))
1672 hash_ptr->sym_ptr = psym;
1673
1674 /* push or pop a scope if appropriate. */
1675 switch (type)
1676 {
1677 default:
1678 break;
1679
1680 case st_File: /* beginning of file */
1681 case st_Proc: /* procedure */
1682 case st_StaticProc: /* static procedure */
1683 case st_Block: /* begin scope */
1684 pscope = allocate_scope ();
1685 pscope->prev = cur_file_ptr->cur_scope;
1686 pscope->lsym = psym;
1687 pscope->type = type;
1688 cur_file_ptr->cur_scope = pscope;
1689
1690 if (type != st_File)
1691 scope_delta = 1;
1692
1693 /* For every block type except file, struct, union, or
1694 enumeration blocks, push a level on the tag stack. We omit
1695 file types, so that tags can span file boundaries. */
1696 if (type != st_File && storage != sc_Info)
1697 {
1698 ptag_head = allocate_thead ();
1699 ptag_head->first_tag = 0;
1700 ptag_head->prev = cur_tag_head;
1701 cur_tag_head = ptag_head;
1702 }
1703 break;
1704
1705 case st_End:
1706 pscope = cur_file_ptr->cur_scope;
1707 if (pscope == (scope_t *) NULL)
1708 as_fatal ("too many st_End's");
1709 else
1710 {
1711 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st;
1712
1713 psym->begin_ptr = pscope->lsym;
1714
1715 if (begin_type != st_File)
1716 scope_delta = -1;
1717
1718 /* Except for file, structure, union, or enumeration end
1719 blocks remove all tags created within this scope. */
1720 if (begin_type != st_File && storage != sc_Info)
1721 {
1722 ptag_head = cur_tag_head;
1723 cur_tag_head = ptag_head->prev;
1724
1725 for (ptag = ptag_head->first_tag;
1726 ptag != (tag_t *) NULL;
1727 ptag = ptag_next)
1728 {
1729 if (ptag->forward_ref != (forward_t *) NULL)
1730 add_unknown_tag (ptag);
1731
1732 ptag_next = ptag->same_block;
1733 ptag->hash_ptr->tag_ptr = ptag->same_name;
1734 free_tag (ptag);
1735 }
1736
1737 free_thead (ptag_head);
1738 }
1739
1740 cur_file_ptr->cur_scope = pscope->prev;
1741
1742 /* block begin gets next sym #. This is set when we know
1743 the symbol index value. */
1744
1745 /* Functions push two or more aux words as follows:
1746 1st word: index+1 of the end symbol (filled in later).
1747 2nd word: type of the function (plus any aux words needed).
1748 Also, tie the external pointer back to the function begin symbol. */
1749 if (begin_type != st_File && begin_type != st_Block)
1750 {
1751 symint_t ty;
1752 varray_t *svp = &cur_file_ptr->aux_syms;
1753
1754 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0);
1755 pscope->lsym->index_ptr =
1756 &svp->last->datum->aux[svp->objects_last_page - 1];
1757 ty = add_aux_sym_tir (&last_func_type_info,
1758 hash_no,
1759 &cur_file_ptr->thash_head[0]);
1760
1761 /* This seems to be unnecessary. I'm not even sure what it is
1762 * intended to do. It's from mips-tfile.
1763 * if (last_func_sym_value != (symbolS *) NULL)
1764 * {
1765 * last_func_sym_value->ifd = cur_file_ptr->file_index;
1766 * last_func_sym_value->index = ty;
1767 * }
1768 */
1769 }
1770
1771 free_scope (pscope);
1772 }
1773 }
1774
1775 cur_file_ptr->nested_scopes += scope_delta;
1776
1777 #ifdef ECOFF_DEBUG
1778 if (debug && type != st_File
1779 && (debug > 2 || type == st_Block || type == st_End
1780 || type == st_Proc || type == st_StaticProc))
1781 {
1782 char *sc_str = sc_to_string (storage);
1783 char *st_str = st_to_string (type);
1784 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0);
1785
1786 fprintf (stderr,
1787 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s",
1788 value, depth, sc_str);
1789
1790 if (str_start && str_end_p1 - str_start > 0)
1791 fprintf (stderr, " st= %-11s name= %.*s\n", st_str, str_end_p1 - str_start, str_start);
1792 else
1793 {
1794 unsigned long len = strlen (st_str);
1795 fprintf (stderr, " st= %.*s\n", len-1, st_str);
1796 }
1797 }
1798 #endif
1799
1800 return psym;
1801 }
1802 \f
1803 /* Add an auxiliary symbol (passing a symint). This is actually used
1804 for integral aux types, not just symints. */
1805
1806 static symint_t
1807 add_aux_sym_symint (aux_word)
1808 symint_t aux_word; /* auxiliary information word */
1809 {
1810 register varray_t *vp;
1811 register aux_t *aux_ptr;
1812
1813 if (cur_file_ptr == (efdr_t *) NULL)
1814 as_fatal ("no current file pointer");
1815
1816 vp = &cur_file_ptr->aux_syms;
1817
1818 if (vp->objects_last_page == vp->objects_per_page)
1819 add_varray_page (vp);
1820
1821 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1822 aux_ptr->type = aux_isym;
1823 aux_ptr->data.isym = aux_word;
1824
1825 return vp->num_allocated++;
1826 }
1827
1828
1829 /* Add an auxiliary symbol (passing a file/symbol index combo). */
1830
1831 static symint_t
1832 add_aux_sym_rndx (file_index, sym_index)
1833 int file_index;
1834 symint_t sym_index;
1835 {
1836 register varray_t *vp;
1837 register aux_t *aux_ptr;
1838
1839 if (cur_file_ptr == (efdr_t *) NULL)
1840 as_fatal ("no current file pointer");
1841
1842 vp = &cur_file_ptr->aux_syms;
1843
1844 if (vp->objects_last_page == vp->objects_per_page)
1845 add_varray_page (vp);
1846
1847 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1848 aux_ptr->type = aux_rndx;
1849 aux_ptr->data.rndx.rfd = file_index;
1850 aux_ptr->data.rndx.index = sym_index;
1851
1852 return vp->num_allocated++;
1853 }
1854 \f
1855 /* Add an auxiliary symbol (passing the basic type and possibly
1856 type qualifiers). */
1857
1858 static symint_t
1859 add_aux_sym_tir (t, state, hash_tbl)
1860 type_info_t *t; /* current type information */
1861 hash_state_t state; /* whether to hash type or not */
1862 thash_t **hash_tbl; /* pointer to hash table to use */
1863 {
1864 register varray_t *vp;
1865 register aux_t *aux_ptr;
1866 static AUXU init_aux;
1867 symint_t ret;
1868 int i;
1869 AUXU aux;
1870
1871 if (cur_file_ptr == (efdr_t *) NULL)
1872 as_fatal ("no current file pointer");
1873
1874 vp = &cur_file_ptr->aux_syms;
1875
1876 aux = init_aux;
1877 aux.ti.bt = (int) t->basic_type;
1878 aux.ti.continued = 0;
1879 aux.ti.fBitfield = t->bitfield;
1880
1881 aux.ti.tq0 = (int) t->type_qualifiers[0];
1882 aux.ti.tq1 = (int) t->type_qualifiers[1];
1883 aux.ti.tq2 = (int) t->type_qualifiers[2];
1884 aux.ti.tq3 = (int) t->type_qualifiers[3];
1885 aux.ti.tq4 = (int) t->type_qualifiers[4];
1886 aux.ti.tq5 = (int) t->type_qualifiers[5];
1887
1888
1889 /* For anything that adds additional information, we must not hash,
1890 so check here, and reset our state. */
1891
1892 if (state != hash_no
1893 && (t->type_qualifiers[0] == tq_Array
1894 || t->type_qualifiers[1] == tq_Array
1895 || t->type_qualifiers[2] == tq_Array
1896 || t->type_qualifiers[3] == tq_Array
1897 || t->type_qualifiers[4] == tq_Array
1898 || t->type_qualifiers[5] == tq_Array
1899 || t->basic_type == bt_Struct
1900 || t->basic_type == bt_Union
1901 || t->basic_type == bt_Enum
1902 || t->bitfield
1903 || t->num_dims > 0))
1904 state = hash_no;
1905
1906 /* See if we can hash this type, and save some space, but some types
1907 can't be hashed (because they contain arrays or continuations),
1908 and others can be put into the hash list, but cannot use existing
1909 types because other aux entries precede this one. */
1910
1911 if (state != hash_no)
1912 {
1913 register thash_t *hash_ptr;
1914 register symint_t hi;
1915
1916 hi = aux.isym & ((1 << HASHBITS) - 1);
1917 hi %= THASH_SIZE;
1918
1919 for (hash_ptr = hash_tbl[hi];
1920 hash_ptr != (thash_t *)0;
1921 hash_ptr = hash_ptr->next)
1922 {
1923 if (aux.isym == hash_ptr->type.isym)
1924 break;
1925 }
1926
1927 if (hash_ptr != (thash_t *) NULL && state == hash_yes)
1928 return hash_ptr->indx;
1929
1930 if (hash_ptr == (thash_t *) NULL)
1931 {
1932 hash_ptr = allocate_thash ();
1933 hash_ptr->next = hash_tbl[hi];
1934 hash_ptr->type = aux;
1935 hash_ptr->indx = vp->num_allocated;
1936 hash_tbl[hi] = hash_ptr;
1937 }
1938 }
1939
1940 /* Everything is set up, add the aux symbol. */
1941 if (vp->objects_last_page == vp->objects_per_page)
1942 add_varray_page (vp);
1943
1944 aux_ptr = &vp->last->datum->aux[ vp->objects_last_page++ ];
1945 aux_ptr->type = aux_tir;
1946 aux_ptr->data = aux;
1947
1948 ret = vp->num_allocated++;
1949
1950 /* Add bitfield length if it exists.
1951
1952 NOTE: Mips documentation claims bitfield goes at the end of the
1953 AUX record, but the DECstation compiler emits it here.
1954 (This would only make a difference for enum bitfields.)
1955
1956 Also note: We use the last size given since gcc may emit 2
1957 for an enum bitfield. */
1958
1959 if (t->bitfield)
1960 (void) add_aux_sym_symint ((symint_t)t->sizes[t->num_sizes-1]);
1961
1962
1963 /* Add tag information if needed. Structure, union, and enum
1964 references add 2 aux symbols: a [file index, symbol index]
1965 pointer to the structure type, and the current file index. */
1966
1967 if (t->basic_type == bt_Struct
1968 || t->basic_type == bt_Union
1969 || t->basic_type == bt_Enum)
1970 {
1971 register symint_t file_index = t->tag_ptr->ifd;
1972 register localsym_t *sym = t->tag_ptr->sym;
1973 register forward_t *forward_ref = allocate_forward ();
1974
1975 if (sym != (localsym_t *) NULL)
1976 {
1977 forward_ref->next = sym->forward_ref;
1978 sym->forward_ref = forward_ref;
1979 }
1980 else
1981 {
1982 forward_ref->next = t->tag_ptr->forward_ref;
1983 t->tag_ptr->forward_ref = forward_ref;
1984 }
1985
1986 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil);
1987 forward_ref->index_ptr
1988 = &vp->last->datum->aux[ vp->objects_last_page - 1];
1989
1990 (void) add_aux_sym_symint (file_index);
1991 forward_ref->ifd_ptr
1992 = &vp->last->datum->aux[ vp->objects_last_page - 1];
1993 }
1994
1995 /* Add information about array bounds if they exist. */
1996 for (i = 0; i < t->num_dims; i++)
1997 {
1998 (void) add_aux_sym_rndx (ST_RFDESCAPE,
1999 cur_file_ptr->int_type);
2000
2001 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/
2002 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */
2003 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/
2004 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */
2005 ? 0
2006 : (t->sizes[i] * 8) / t->dimensions[i]);
2007 };
2008
2009 /* NOTE: Mips documentation claims that the bitfield width goes here.
2010 But it needs to be emitted earlier. */
2011
2012 return ret;
2013 }
2014 \f
2015 /* Add a tag to the tag table (unless it already exists). */
2016
2017 static tag_t *
2018 get_tag (tag, sym, basic_type)
2019 const char *tag; /* tag name */
2020 localsym_t *sym; /* tag start block */
2021 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
2022 {
2023 shash_t *hash_ptr;
2024 const char *err;
2025 tag_t *tag_ptr;
2026
2027 if (cur_file_ptr == (efdr_t *) NULL)
2028 as_fatal ("no current file pointer");
2029
2030 hash_ptr = (shash_t *) hash_find (tag_hash, tag);
2031
2032 if (hash_ptr != (shash_t *) NULL
2033 && hash_ptr->tag_ptr != (tag_t *) NULL)
2034 {
2035 tag_ptr = hash_ptr->tag_ptr;
2036 if (sym != (localsym_t *) NULL)
2037 {
2038 tag_ptr->basic_type = basic_type;
2039 tag_ptr->ifd = cur_file_ptr->file_index;
2040 tag_ptr->sym = sym;
2041 }
2042 return tag_ptr;
2043 }
2044
2045 if (hash_ptr == (shash_t *) NULL)
2046 {
2047 char *perm;
2048
2049 perm = xmalloc ((unsigned long) (strlen (tag) + 1));
2050 strcpy (perm, tag);
2051 hash_ptr = allocate_shash ();
2052 err = hash_insert (tag_hash, perm, (char *) hash_ptr);
2053 if (err)
2054 as_fatal ("Inserting \"%s\" into tag hash table: %s",
2055 tag, err);
2056 hash_ptr->string = perm;
2057 }
2058
2059 tag_ptr = allocate_tag ();
2060 tag_ptr->forward_ref = (forward_t *) NULL;
2061 tag_ptr->hash_ptr = hash_ptr;
2062 tag_ptr->same_name = hash_ptr->tag_ptr;
2063 tag_ptr->basic_type = basic_type;
2064 tag_ptr->sym = sym;
2065 tag_ptr->ifd = ((sym == (localsym_t *) NULL)
2066 ? (symint_t) -1
2067 : cur_file_ptr->file_index);
2068 tag_ptr->same_block = cur_tag_head->first_tag;
2069
2070 cur_tag_head->first_tag = tag_ptr;
2071 hash_ptr->tag_ptr = tag_ptr;
2072
2073 return tag_ptr;
2074 }
2075 \f
2076 /* Add an unknown {struct, union, enum} tag. */
2077
2078 static void
2079 add_unknown_tag (ptag)
2080 tag_t *ptag; /* pointer to tag information */
2081 {
2082 shash_t *hash_ptr = ptag->hash_ptr;
2083 char *name = hash_ptr->string;
2084 localsym_t *sym;
2085 forward_t **pf;
2086
2087 #ifdef ECOFF_DEBUG
2088 if (debug > 1)
2089 {
2090 char *agg_type = "{unknown aggregate type}";
2091 switch (ptag->basic_type)
2092 {
2093 case bt_Struct: agg_type = "struct"; break;
2094 case bt_Union: agg_type = "union"; break;
2095 case bt_Enum: agg_type = "enum"; break;
2096 default: break;
2097 }
2098
2099 fprintf (stderr, "unknown %s %.*s found\n", agg_type,
2100 hash_ptr->len, name_start);
2101 }
2102 #endif
2103
2104 sym = add_ecoff_symbol (name,
2105 st_Block,
2106 sc_Info,
2107 (symbolS *) NULL,
2108 (bfd_vma) 0,
2109 (symint_t) 0,
2110 (symint_t) 0);
2111
2112 (void) add_ecoff_symbol (name,
2113 st_End,
2114 sc_Info,
2115 (symbolS *) NULL,
2116 (bfd_vma) 0,
2117 (symint_t) 0,
2118 (symint_t) 0);
2119
2120 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next)
2121 ;
2122 *pf = ptag->forward_ref;
2123 }
2124 \f
2125 /* Add a procedure to the current file's list of procedures, and record
2126 this is the current procedure. */
2127
2128 static void
2129 add_procedure (func)
2130 char *func; /* func name */
2131 {
2132 register varray_t *vp;
2133 register proc_t *new_proc_ptr;
2134 symbolS *sym;
2135
2136 #ifdef ECOFF_DEBUG
2137 if (debug)
2138 fputc ('\n', stderr);
2139 #endif
2140
2141 if (cur_file_ptr == (efdr_t *) NULL)
2142 as_fatal ("no current file pointer");
2143
2144 vp = &cur_file_ptr->procs;
2145
2146 if (vp->objects_last_page == vp->objects_per_page)
2147 add_varray_page (vp);
2148
2149 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++];
2150
2151 if (first_proc_ptr == (proc_t *) NULL)
2152 first_proc_ptr = new_proc_ptr;
2153
2154 vp->num_allocated++;
2155
2156 new_proc_ptr->pdr.isym = -1;
2157 new_proc_ptr->pdr.iline = -1;
2158 new_proc_ptr->pdr.lnLow = -1;
2159 new_proc_ptr->pdr.lnHigh = -1;
2160
2161 /* Set the BSF_FUNCTION flag for the symbol. */
2162 sym = symbol_find_or_make (func);
2163 sym->bsym->flags |= BSF_FUNCTION;
2164
2165 /* Push the start of the function. */
2166 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text,
2167 sym, (bfd_vma) 0, (symint_t) 0,
2168 (symint_t) 0);
2169
2170 ++proc_cnt;
2171
2172 /* Fill in the linenos preceding the .ent, if any. */
2173 if (noproc_lineno != (lineno_list_t *) NULL)
2174 {
2175 lineno_list_t *l;
2176
2177 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next)
2178 l->proc = new_proc_ptr;
2179 *last_lineno_ptr = noproc_lineno;
2180 while (*last_lineno_ptr != NULL)
2181 {
2182 last_lineno = *last_lineno_ptr;
2183 last_lineno_ptr = &last_lineno->next;
2184 }
2185 noproc_lineno = (lineno_list_t *) NULL;
2186 }
2187 }
2188 \f
2189 /* Add a new filename, and set up all of the file relative
2190 virtual arrays (strings, symbols, aux syms, etc.). Record
2191 where the current file structure lives. */
2192
2193 static void
2194 add_file (file_name, indx, fake)
2195 const char *file_name; /* file name */
2196 int indx;
2197 int fake;
2198 {
2199 register int first_ch;
2200 register efdr_t *fil_ptr;
2201
2202 #ifdef ECOFF_DEBUG
2203 if (debug)
2204 fprintf (stderr, "\tfile\t%.*s\n", len, file_start);
2205 #endif
2206
2207 /* If the file name is NULL, then no .file symbol appeared, and we
2208 want to use the actual file name. */
2209 if (file_name == (const char *) NULL)
2210 {
2211 char *file;
2212
2213 if (first_file != (efdr_t *) NULL)
2214 as_fatal ("fake .file after real one");
2215 as_where (&file, (unsigned int *) NULL);
2216 file_name = (const char *) file;
2217
2218 /* Automatically generate ECOFF debugging information, since I
2219 think that's what other ECOFF assemblers do. We don't do
2220 this if we see a .file directive with a string, since that
2221 implies that some sort of debugging information is being
2222 provided. */
2223 if (! symbol_table_frozen && debug_type == DEBUG_NONE)
2224 debug_type = DEBUG_ECOFF;
2225 }
2226
2227 #ifndef NO_LISTING
2228 if (listing)
2229 listing_source_file (file_name);
2230 #endif
2231
2232 current_stabs_filename = file_name;
2233
2234 /* If we're creating stabs, then we don't actually make a new FDR.
2235 Instead, we just create a stabs symbol. */
2236 if (stabs_seen)
2237 {
2238 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2239 symbol_new ("L0\001", now_seg,
2240 (valueT) frag_now_fix (),
2241 frag_now),
2242 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL));
2243 return;
2244 }
2245
2246 first_ch = *file_name;
2247
2248 /* FIXME: We can't safely merge files which have line number
2249 information (fMerge will be zero in this case). Otherwise, we
2250 get incorrect line number debugging info. See for instance
2251 ecoff_build_lineno, which will end up setting all file->fdr.*
2252 fields multiple times, resulting in incorrect debug info. In
2253 order to make this work right, all line number and symbol info
2254 for the same source file has to be adjacent in the object file,
2255 so that a single file descriptor can be used to point to them.
2256 This would require maintaining file specific lists of line
2257 numbers and symbols for each file, so that they can be merged
2258 together (or output together) when two .file pseudo-ops are
2259 merged into one file descriptor. */
2260
2261 /* See if the file has already been created. */
2262 for (fil_ptr = first_file;
2263 fil_ptr != (efdr_t *) NULL;
2264 fil_ptr = fil_ptr->next_file)
2265 {
2266 if (first_ch == fil_ptr->name[0]
2267 && strcmp (file_name, fil_ptr->name) == 0
2268 && fil_ptr->fdr.fMerge)
2269 {
2270 cur_file_ptr = fil_ptr;
2271 if (! fake)
2272 cur_file_ptr->fake = 0;
2273 break;
2274 }
2275 }
2276
2277 /* If this is a new file, create it. */
2278 if (fil_ptr == (efdr_t *) NULL)
2279 {
2280 if (file_desc.objects_last_page == file_desc.objects_per_page)
2281 add_varray_page (&file_desc);
2282
2283 fil_ptr = cur_file_ptr =
2284 &file_desc.last->datum->file[file_desc.objects_last_page++];
2285 *fil_ptr = init_file;
2286
2287 fil_ptr->file_index = current_file_idx++;
2288 ++file_desc.num_allocated;
2289
2290 fil_ptr->fake = fake;
2291
2292 /* Allocate the string hash table. */
2293 fil_ptr->str_hash = hash_new ();
2294
2295 /* Make sure 0 byte in string table is null */
2296 add_string (&fil_ptr->strings,
2297 fil_ptr->str_hash,
2298 "",
2299 (shash_t **)0);
2300
2301 if (strlen (file_name) > PAGE_USIZE - 2)
2302 as_fatal ("Filename goes over one page boundary.");
2303
2304 /* Push the start of the filename. We assume that the filename
2305 will be stored at string offset 1. */
2306 (void) add_ecoff_symbol (file_name, st_File, sc_Text,
2307 (symbolS *) NULL, (bfd_vma) 0,
2308 (symint_t) 0, (symint_t) 0);
2309 fil_ptr->fdr.rss = 1;
2310 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1];
2311
2312 /* Update the linked list of file descriptors. */
2313 *last_file_ptr = fil_ptr;
2314 last_file_ptr = &fil_ptr->next_file;
2315
2316 /* Add void & int types to the file (void should be first to catch
2317 errant 0's within the index fields). */
2318 fil_ptr->void_type = add_aux_sym_tir (&void_type_info,
2319 hash_yes,
2320 &cur_file_ptr->thash_head[0]);
2321
2322 fil_ptr->int_type = add_aux_sym_tir (&int_type_info,
2323 hash_yes,
2324 &cur_file_ptr->thash_head[0]);
2325 }
2326 }
2327
2328 /* This function is called when the assembler notices a preprocessor
2329 directive switching to a new file. This will not happen in
2330 compiler output, only in hand coded assembler. */
2331
2332 void
2333 ecoff_new_file (name)
2334 const char *name;
2335 {
2336 if (cur_file_ptr != NULL && strcmp (cur_file_ptr->name, name) == 0)
2337 return;
2338 add_file (name, 0, 0);
2339
2340 /* This is a hand coded assembler file, so automatically turn on
2341 debugging information. */
2342 if (debug_type == DEBUG_NONE)
2343 debug_type = DEBUG_ECOFF;
2344 }
2345 \f
2346 #ifdef ECOFF_DEBUG
2347
2348 /* Convert storage class to string. */
2349
2350 static char *
2351 sc_to_string(storage_class)
2352 sc_t storage_class;
2353 {
2354 switch(storage_class)
2355 {
2356 case sc_Nil: return "Nil,";
2357 case sc_Text: return "Text,";
2358 case sc_Data: return "Data,";
2359 case sc_Bss: return "Bss,";
2360 case sc_Register: return "Register,";
2361 case sc_Abs: return "Abs,";
2362 case sc_Undefined: return "Undefined,";
2363 case sc_CdbLocal: return "CdbLocal,";
2364 case sc_Bits: return "Bits,";
2365 case sc_CdbSystem: return "CdbSystem,";
2366 case sc_RegImage: return "RegImage,";
2367 case sc_Info: return "Info,";
2368 case sc_UserStruct: return "UserStruct,";
2369 case sc_SData: return "SData,";
2370 case sc_SBss: return "SBss,";
2371 case sc_RData: return "RData,";
2372 case sc_Var: return "Var,";
2373 case sc_Common: return "Common,";
2374 case sc_SCommon: return "SCommon,";
2375 case sc_VarRegister: return "VarRegister,";
2376 case sc_Variant: return "Variant,";
2377 case sc_SUndefined: return "SUndefined,";
2378 case sc_Init: return "Init,";
2379 case sc_Max: return "Max,";
2380 }
2381
2382 return "???,";
2383 }
2384
2385 #endif /* DEBUG */
2386 \f
2387 #ifdef ECOFF_DEBUG
2388
2389 /* Convert symbol type to string. */
2390
2391 static char *
2392 st_to_string(symbol_type)
2393 st_t symbol_type;
2394 {
2395 switch(symbol_type)
2396 {
2397 case st_Nil: return "Nil,";
2398 case st_Global: return "Global,";
2399 case st_Static: return "Static,";
2400 case st_Param: return "Param,";
2401 case st_Local: return "Local,";
2402 case st_Label: return "Label,";
2403 case st_Proc: return "Proc,";
2404 case st_Block: return "Block,";
2405 case st_End: return "End,";
2406 case st_Member: return "Member,";
2407 case st_Typedef: return "Typedef,";
2408 case st_File: return "File,";
2409 case st_RegReloc: return "RegReloc,";
2410 case st_Forward: return "Forward,";
2411 case st_StaticProc: return "StaticProc,";
2412 case st_Constant: return "Constant,";
2413 case st_Str: return "String,";
2414 case st_Number: return "Number,";
2415 case st_Expr: return "Expr,";
2416 case st_Type: return "Type,";
2417 case st_Max: return "Max,";
2418 }
2419
2420 return "???,";
2421 }
2422
2423 #endif /* DEBUG */
2424 \f
2425 /* Parse .begin directives which have a label as the first argument
2426 which gives the location of the start of the block. */
2427
2428 void
2429 ecoff_directive_begin (ignore)
2430 int ignore;
2431 {
2432 char *name;
2433 char name_end;
2434
2435 if (cur_file_ptr == (efdr_t *) NULL)
2436 {
2437 as_warn (".begin directive without a preceding .file directive");
2438 demand_empty_rest_of_line ();
2439 return;
2440 }
2441
2442 if (cur_proc_ptr == (proc_t *) NULL)
2443 {
2444 as_warn (".begin directive without a preceding .ent directive");
2445 demand_empty_rest_of_line ();
2446 return;
2447 }
2448
2449 name = input_line_pointer;
2450 name_end = get_symbol_end ();
2451
2452 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text,
2453 symbol_find_or_make (name),
2454 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2455
2456 *input_line_pointer = name_end;
2457
2458 /* The line number follows, but we don't use it. */
2459 (void) get_absolute_expression ();
2460 demand_empty_rest_of_line ();
2461 }
2462 \f
2463 /* Parse .bend directives which have a label as the first argument
2464 which gives the location of the end of the block. */
2465
2466 void
2467 ecoff_directive_bend (ignore)
2468 int ignore;
2469 {
2470 char *name;
2471 char name_end;
2472 symbolS *endsym;
2473
2474 if (cur_file_ptr == (efdr_t *) NULL)
2475 {
2476 as_warn (".bend directive without a preceding .file directive");
2477 demand_empty_rest_of_line ();
2478 return;
2479 }
2480
2481 if (cur_proc_ptr == (proc_t *) NULL)
2482 {
2483 as_warn (".bend directive without a preceding .ent directive");
2484 demand_empty_rest_of_line ();
2485 return;
2486 }
2487
2488 name = input_line_pointer;
2489 name_end = get_symbol_end ();
2490
2491 /* The value is the distance between the .bend directive and the
2492 corresponding symbol. We fill in the offset when we write out
2493 the symbol. */
2494 endsym = symbol_find (name);
2495 if (endsym == (symbolS *) NULL)
2496 as_warn (".bend directive names unknown symbol");
2497 else
2498 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym,
2499 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2500
2501 *input_line_pointer = name_end;
2502
2503 /* The line number follows, but we don't use it. */
2504 (void) get_absolute_expression ();
2505 demand_empty_rest_of_line ();
2506 }
2507 \f
2508 /* COFF debugging information is provided as a series of directives
2509 (.def, .scl, etc.). We build up information as we read the
2510 directives in the following static variables, and file it away when
2511 we reach the .endef directive. */
2512 static char *coff_sym_name;
2513 static type_info_t coff_type;
2514 static sc_t coff_storage_class;
2515 static st_t coff_symbol_typ;
2516 static int coff_is_function;
2517 static char *coff_tag;
2518 static valueT coff_value;
2519 static symbolS *coff_sym_value;
2520 static bfd_vma coff_sym_addend;
2521 static int coff_inside_enumeration;
2522
2523 /* Handle a .def directive: start defining a symbol. */
2524
2525 void
2526 ecoff_directive_def (ignore)
2527 int ignore;
2528 {
2529 char *name;
2530 char name_end;
2531
2532 ecoff_debugging_seen = 1;
2533
2534 SKIP_WHITESPACE ();
2535
2536 name = input_line_pointer;
2537 name_end = get_symbol_end ();
2538
2539 if (coff_sym_name != (char *) NULL)
2540 as_warn (".def pseudo-op used inside of .def/.endef; ignored");
2541 else if (*name == '\0')
2542 as_warn ("Empty symbol name in .def; ignored");
2543 else
2544 {
2545 if (coff_sym_name != (char *) NULL)
2546 free (coff_sym_name);
2547 if (coff_tag != (char *) NULL)
2548 free (coff_tag);
2549 coff_sym_name = (char *) xmalloc ((unsigned long) (strlen (name) + 1));
2550 strcpy (coff_sym_name, name);
2551 coff_type = type_info_init;
2552 coff_storage_class = sc_Nil;
2553 coff_symbol_typ = st_Nil;
2554 coff_is_function = 0;
2555 coff_tag = (char *) NULL;
2556 coff_value = 0;
2557 coff_sym_value = (symbolS *) NULL;
2558 coff_sym_addend = 0;
2559 }
2560
2561 *input_line_pointer = name_end;
2562
2563 demand_empty_rest_of_line ();
2564 }
2565
2566 /* Handle a .dim directive, used to give dimensions for an array. The
2567 arguments are comma separated numbers. mips-tfile assumes that
2568 there will not be more than 6 dimensions, and gdb won't read any
2569 more than that anyhow, so I will also make that assumption. */
2570
2571 void
2572 ecoff_directive_dim (ignore)
2573 int ignore;
2574 {
2575 int dimens[N_TQ];
2576 int i;
2577
2578 if (coff_sym_name == (char *) NULL)
2579 {
2580 as_warn (".dim pseudo-op used outside of .def/.endef; ignored");
2581 demand_empty_rest_of_line ();
2582 return;
2583 }
2584
2585 for (i = 0; i < N_TQ; i++)
2586 {
2587 SKIP_WHITESPACE ();
2588 dimens[i] = get_absolute_expression ();
2589 if (*input_line_pointer == ',')
2590 ++input_line_pointer;
2591 else
2592 {
2593 if (*input_line_pointer != '\n'
2594 && *input_line_pointer != ';')
2595 as_warn ("Badly formed .dim directive");
2596 break;
2597 }
2598 }
2599
2600 if (i == N_TQ)
2601 --i;
2602
2603 /* The dimensions are stored away in reverse order. */
2604 for (; i >= 0; i--)
2605 {
2606 if (coff_type.num_dims >= N_TQ)
2607 {
2608 as_warn ("Too many .dim entries");
2609 break;
2610 }
2611 coff_type.dimensions[coff_type.num_dims] = dimens[i];
2612 ++coff_type.num_dims;
2613 }
2614
2615 demand_empty_rest_of_line ();
2616 }
2617
2618 /* Handle a .scl directive, which sets the COFF storage class of the
2619 symbol. */
2620
2621 void
2622 ecoff_directive_scl (ignore)
2623 int ignore;
2624 {
2625 long val;
2626
2627 if (coff_sym_name == (char *) NULL)
2628 {
2629 as_warn (".scl pseudo-op used outside of .def/.endef; ignored");
2630 demand_empty_rest_of_line ();
2631 return;
2632 }
2633
2634 val = get_absolute_expression ();
2635
2636 coff_symbol_typ = map_coff_sym_type[val];
2637 coff_storage_class = map_coff_storage[val];
2638
2639 demand_empty_rest_of_line ();
2640 }
2641
2642 /* Handle a .size directive. For some reason mips-tfile.c thinks that
2643 .size can have multiple arguments. We humor it, although gcc will
2644 never generate more than one argument. */
2645
2646 void
2647 ecoff_directive_size (ignore)
2648 int ignore;
2649 {
2650 int sizes[N_TQ];
2651 int i;
2652
2653 if (coff_sym_name == (char *) NULL)
2654 {
2655 as_warn (".size pseudo-op used outside of .def/.endef; ignored");
2656 demand_empty_rest_of_line ();
2657 return;
2658 }
2659
2660 for (i = 0; i < N_TQ; i++)
2661 {
2662 SKIP_WHITESPACE ();
2663 sizes[i] = get_absolute_expression ();
2664 if (*input_line_pointer == ',')
2665 ++input_line_pointer;
2666 else
2667 {
2668 if (*input_line_pointer != '\n'
2669 && *input_line_pointer != ';')
2670 as_warn ("Badly formed .size directive");
2671 break;
2672 }
2673 }
2674
2675 if (i == N_TQ)
2676 --i;
2677
2678 /* The sizes are stored away in reverse order. */
2679 for (; i >= 0; i--)
2680 {
2681 if (coff_type.num_sizes >= N_TQ)
2682 {
2683 as_warn ("Too many .size entries");
2684 break;
2685 }
2686 coff_type.sizes[coff_type.num_sizes] = sizes[i];
2687 ++coff_type.num_sizes;
2688 }
2689
2690 demand_empty_rest_of_line ();
2691 }
2692
2693 /* Handle the .type directive, which gives the COFF type of the
2694 symbol. */
2695
2696 void
2697 ecoff_directive_type (ignore)
2698 int ignore;
2699 {
2700 long val;
2701 tq_t *tq_ptr;
2702 tq_t *tq_shft;
2703
2704 if (coff_sym_name == (char *) NULL)
2705 {
2706 as_warn (".type pseudo-op used outside of .def/.endef; ignored");
2707 demand_empty_rest_of_line ();
2708 return;
2709 }
2710
2711 val = get_absolute_expression ();
2712
2713 coff_type.orig_type = BTYPE (val);
2714 coff_type.basic_type = map_coff_types[coff_type.orig_type];
2715
2716 tq_ptr = &coff_type.type_qualifiers[N_TQ];
2717 while (val &~ N_BTMASK)
2718 {
2719 if (tq_ptr == &coff_type.type_qualifiers[0])
2720 {
2721 /* FIXME: We could handle this by setting the continued bit.
2722 There would still be a limit: the .type argument can not
2723 be infinite. */
2724 as_warn ("The type of %s is too complex; it will be simplified",
2725 coff_sym_name);
2726 break;
2727 }
2728 if (ISPTR (val))
2729 *--tq_ptr = tq_Ptr;
2730 else if (ISFCN (val))
2731 *--tq_ptr = tq_Proc;
2732 else if (ISARY (val))
2733 *--tq_ptr = tq_Array;
2734 else
2735 as_fatal ("Unrecognized .type argument");
2736
2737 val = DECREF (val);
2738 }
2739
2740 tq_shft = &coff_type.type_qualifiers[0];
2741 while (tq_ptr != &coff_type.type_qualifiers[N_TQ])
2742 *tq_shft++ = *tq_ptr++;
2743
2744 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc)
2745 {
2746 /* If this is a function, ignore it, so that we don't get two
2747 entries (one from the .ent, and one for the .def that
2748 precedes it). Save the type information so that the end
2749 block can properly add it after the begin block index. For
2750 MIPS knows what reason, we must strip off the function type
2751 at this point. */
2752 coff_is_function = 1;
2753 tq_shft[-1] = tq_Nil;
2754 }
2755
2756 while (tq_shft != &coff_type.type_qualifiers[N_TQ])
2757 *tq_shft++ = tq_Nil;
2758
2759 demand_empty_rest_of_line ();
2760 }
2761
2762 /* Handle the .tag directive, which gives the name of a structure,
2763 union or enum. */
2764
2765 void
2766 ecoff_directive_tag (ignore)
2767 int ignore;
2768 {
2769 char *name;
2770 char name_end;
2771
2772 if (coff_sym_name == (char *) NULL)
2773 {
2774 as_warn (".tag pseudo-op used outside of .def/.endef; ignored");
2775 demand_empty_rest_of_line ();
2776 return;
2777 }
2778
2779 name = input_line_pointer;
2780 name_end = get_symbol_end ();
2781
2782 coff_tag = (char *) xmalloc ((unsigned long) (strlen (name) + 1));
2783 strcpy (coff_tag, name);
2784
2785 *input_line_pointer = name_end;
2786
2787 demand_empty_rest_of_line ();
2788 }
2789
2790 /* Handle the .val directive, which gives the value of the symbol. It
2791 may be the name of a static or global symbol. */
2792
2793 void
2794 ecoff_directive_val (ignore)
2795 int ignore;
2796 {
2797 expressionS exp;
2798
2799 if (coff_sym_name == (char *) NULL)
2800 {
2801 as_warn (".val pseudo-op used outside of .def/.endef; ignored");
2802 demand_empty_rest_of_line ();
2803 return;
2804 }
2805
2806 expression (&exp);
2807 if (exp.X_op != O_constant && exp.X_op != O_symbol)
2808 {
2809 as_bad (".val expression is too copmlex");
2810 demand_empty_rest_of_line ();
2811 return;
2812 }
2813
2814 if (exp.X_op == O_constant)
2815 coff_value = exp.X_add_number;
2816 else
2817 {
2818 coff_sym_value = exp.X_add_symbol;
2819 coff_sym_addend = exp.X_add_number;
2820 }
2821
2822 demand_empty_rest_of_line ();
2823 }
2824
2825 /* Handle the .endef directive, which terminates processing of COFF
2826 debugging information for a symbol. */
2827
2828 void
2829 ecoff_directive_endef (ignore)
2830 int ignore;
2831 {
2832 char *name;
2833 symint_t indx;
2834 localsym_t *sym;
2835
2836 demand_empty_rest_of_line ();
2837
2838 if (coff_sym_name == (char *) NULL)
2839 {
2840 as_warn (".endef pseudo-op used before .def; ignored");
2841 return;
2842 }
2843
2844 name = coff_sym_name;
2845 coff_sym_name = (char *) NULL;
2846
2847 /* If the symbol is a static or external, we have already gotten the
2848 appropriate type and class, so make sure we don't override those
2849 values. This is needed because there are some type and classes
2850 that are not in COFF, such as short data, etc. */
2851 if (coff_sym_value != (symbolS *) NULL)
2852 {
2853 coff_symbol_typ = st_Nil;
2854 coff_storage_class = sc_Nil;
2855 }
2856
2857 coff_type.extra_sizes = coff_tag != (char *) NULL;
2858 if (coff_type.num_dims > 0)
2859 {
2860 int diff = coff_type.num_dims - coff_type.num_sizes;
2861 int i = coff_type.num_dims - 1;
2862 int j;
2863
2864 if (coff_type.num_sizes != 1 || diff < 0)
2865 {
2866 as_warn ("Bad COFF debugging info");
2867 return;
2868 }
2869
2870 /* If this is an array, make sure the same number of dimensions
2871 and sizes were passed, creating extra sizes for multiply
2872 dimensioned arrays if not passed. */
2873 coff_type.extra_sizes = 0;
2874 if (diff)
2875 {
2876 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1;
2877 while (j >= 0)
2878 {
2879 coff_type.sizes[j] = (((j - diff) >= 0)
2880 ? coff_type.sizes[j - diff]
2881 : 0);
2882 j--;
2883 }
2884
2885 coff_type.num_sizes = i + 1;
2886 for (i--; i >= 0; i--)
2887 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0
2888 ? 0
2889 : (coff_type.sizes[i + 1]
2890 / coff_type.dimensions[i + 1]));
2891 }
2892 }
2893 else if (coff_symbol_typ == st_Member
2894 && coff_type.num_sizes - coff_type.extra_sizes == 1)
2895 {
2896 /* Is this a bitfield? This is indicated by a structure memeber
2897 having a size field that isn't an array. */
2898 coff_type.bitfield = 1;
2899 }
2900
2901 /* Except for enumeration members & begin/ending of scopes, put the
2902 type word in the aux. symbol table. */
2903 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End)
2904 indx = 0;
2905 else if (coff_inside_enumeration)
2906 indx = cur_file_ptr->void_type;
2907 else
2908 {
2909 if (coff_type.basic_type == bt_Struct
2910 || coff_type.basic_type == bt_Union
2911 || coff_type.basic_type == bt_Enum)
2912 {
2913 if (coff_tag == (char *) NULL)
2914 {
2915 as_warn ("No tag specified for %s", name);
2916 return;
2917 }
2918
2919 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL,
2920 coff_type.basic_type);
2921 }
2922
2923 if (coff_is_function)
2924 {
2925 last_func_type_info = coff_type;
2926 last_func_sym_value = coff_sym_value;
2927 return;
2928 }
2929
2930 indx = add_aux_sym_tir (&coff_type,
2931 hash_yes,
2932 &cur_file_ptr->thash_head[0]);
2933 }
2934
2935 /* Do any last minute adjustments that are necessary. */
2936 switch (coff_symbol_typ)
2937 {
2938 default:
2939 break;
2940
2941 /* For the beginning of structs, unions, and enumerations, the
2942 size info needs to be passed in the value field. */
2943 case st_Block:
2944 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes
2945 != 1)
2946 {
2947 as_warn ("Bad COFF debugging information");
2948 return;
2949 }
2950 else
2951 coff_value = coff_type.sizes[0];
2952
2953 coff_inside_enumeration = (coff_type.orig_type == T_ENUM);
2954 break;
2955
2956 /* For the end of structs, unions, and enumerations, omit the
2957 name which is always ".eos". This needs to be done last, so
2958 that any error reporting above gives the correct name. */
2959 case st_End:
2960 free (name);
2961 name = (char *) NULL;
2962 coff_value = 0;
2963 coff_inside_enumeration = 0;
2964 break;
2965
2966 /* Members of structures and unions that aren't bitfields, need
2967 to adjust the value from a byte offset to a bit offset.
2968 Members of enumerations do not have the value adjusted, and
2969 can be distinguished by indx == indexNil. For enumerations,
2970 update the maximum enumeration value. */
2971 case st_Member:
2972 if (! coff_type.bitfield && ! coff_inside_enumeration)
2973 coff_value *= 8;
2974
2975 break;
2976 }
2977
2978 /* Add the symbol. */
2979 sym = add_ecoff_symbol (name,
2980 coff_symbol_typ,
2981 coff_storage_class,
2982 coff_sym_value,
2983 coff_sym_addend,
2984 (symint_t) coff_value,
2985 indx);
2986
2987 /* deal with struct, union, and enum tags. */
2988 if (coff_symbol_typ == st_Block)
2989 {
2990 /* Create or update the tag information. */
2991 tag_t *tag_ptr = get_tag (name,
2992 sym,
2993 coff_type.basic_type);
2994 forward_t **pf;
2995
2996 /* Remember any forward references. */
2997 for (pf = &sym->forward_ref;
2998 *pf != (forward_t *) NULL;
2999 pf = &(*pf)->next)
3000 ;
3001 *pf = tag_ptr->forward_ref;
3002 tag_ptr->forward_ref = (forward_t *) NULL;
3003 }
3004 }
3005 \f
3006 /* Parse .end directives. */
3007
3008 void
3009 ecoff_directive_end (ignore)
3010 int ignore;
3011 {
3012 char *name;
3013 char name_end;
3014 register int ch;
3015 symbolS *ent;
3016
3017 if (cur_file_ptr == (efdr_t *) NULL)
3018 {
3019 as_warn (".end directive without a preceding .file directive");
3020 demand_empty_rest_of_line ();
3021 return;
3022 }
3023
3024 if (cur_proc_ptr == (proc_t *) NULL)
3025 {
3026 as_warn (".end directive without a preceding .ent directive");
3027 demand_empty_rest_of_line ();
3028 return;
3029 }
3030
3031 name = input_line_pointer;
3032 name_end = get_symbol_end ();
3033
3034 ch = *name;
3035 if (! is_name_beginner (ch))
3036 {
3037 as_warn (".end directive has no name");
3038 *input_line_pointer = name_end;
3039 demand_empty_rest_of_line ();
3040 return;
3041 }
3042
3043 /* The value is the distance between the .end directive and the
3044 corresponding symbol. We create a fake symbol to hold the
3045 current location, and put in the offset when we write out the
3046 symbol. */
3047 ent = symbol_find (name);
3048 if (ent == (symbolS *) NULL)
3049 as_warn (".end directive names unknown symbol");
3050 else
3051 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text,
3052 symbol_new ("L0\001", now_seg,
3053 (valueT) frag_now_fix (),
3054 frag_now),
3055 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
3056
3057 cur_proc_ptr = (proc_t *) NULL;
3058
3059 *input_line_pointer = name_end;
3060 demand_empty_rest_of_line ();
3061 }
3062 \f
3063 /* Parse .ent directives. */
3064
3065 void
3066 ecoff_directive_ent (ignore)
3067 int ignore;
3068 {
3069 char *name;
3070 char name_end;
3071 register int ch;
3072
3073 if (cur_file_ptr == (efdr_t *) NULL)
3074 add_file ((const char *) NULL, 0, 1);
3075
3076 if (cur_proc_ptr != (proc_t *) NULL)
3077 {
3078 as_warn ("second .ent directive found before .end directive");
3079 demand_empty_rest_of_line ();
3080 return;
3081 }
3082
3083 name = input_line_pointer;
3084 name_end = get_symbol_end ();
3085
3086 ch = *name;
3087 if (! is_name_beginner (ch))
3088 {
3089 as_warn (".ent directive has no name");
3090 *input_line_pointer = name_end;
3091 demand_empty_rest_of_line ();
3092 return;
3093 }
3094
3095 add_procedure (name);
3096
3097 *input_line_pointer = name_end;
3098
3099 /* The .ent directive is sometimes followed by a number. I'm not
3100 really sure what the number means. I don't see any way to store
3101 the information in the PDR. The Irix 4 assembler seems to ignore
3102 the information. */
3103 SKIP_WHITESPACE ();
3104 if (*input_line_pointer == ',')
3105 {
3106 ++input_line_pointer;
3107 SKIP_WHITESPACE ();
3108 }
3109 if (isdigit (*input_line_pointer) || *input_line_pointer == '-')
3110 (void) get_absolute_expression ();
3111
3112 demand_empty_rest_of_line ();
3113 }
3114 \f
3115 /* Parse .extern directives. */
3116
3117 void
3118 ecoff_directive_extern (ignore)
3119 int ignore;
3120 {
3121 char *name;
3122 int c;
3123 symbolS *symbolp;
3124 valueT size;
3125
3126 name = input_line_pointer;
3127 c = get_symbol_end ();
3128 symbolp = symbol_find_or_make (name);
3129 *input_line_pointer = c;
3130
3131 S_SET_EXTERNAL (symbolp);
3132
3133 if (*input_line_pointer == ',')
3134 ++input_line_pointer;
3135 size = get_absolute_expression ();
3136
3137 symbolp->ecoff_extern_size = size;
3138 }
3139 \f
3140 /* Parse .file directives. */
3141
3142 void
3143 ecoff_directive_file (ignore)
3144 int ignore;
3145 {
3146 int indx;
3147 char *name;
3148 int len;
3149
3150 if (cur_proc_ptr != (proc_t *) NULL)
3151 {
3152 as_warn ("No way to handle .file within .ent/.end section");
3153 demand_empty_rest_of_line ();
3154 return;
3155 }
3156
3157 indx = (int) get_absolute_expression ();
3158
3159 /* FIXME: we don't have to save the name here. */
3160 name = demand_copy_C_string (&len);
3161
3162 add_file (name, indx - 1, 0);
3163
3164 demand_empty_rest_of_line ();
3165 }
3166 \f
3167 /* Parse .fmask directives. */
3168
3169 void
3170 ecoff_directive_fmask (ignore)
3171 int ignore;
3172 {
3173 long val;
3174
3175 if (cur_proc_ptr == (proc_t *) NULL)
3176 {
3177 as_warn (".fmask outside of .ent");
3178 demand_empty_rest_of_line ();
3179 return;
3180 }
3181
3182 if (get_absolute_expression_and_terminator (&val) != ',')
3183 {
3184 as_warn ("Bad .fmask directive");
3185 --input_line_pointer;
3186 demand_empty_rest_of_line ();
3187 return;
3188 }
3189
3190 cur_proc_ptr->pdr.fregmask = val;
3191 cur_proc_ptr->pdr.fregoffset = get_absolute_expression ();
3192
3193 demand_empty_rest_of_line ();
3194 }
3195 \f
3196 /* Parse .frame directives. */
3197
3198 void
3199 ecoff_directive_frame (ignore)
3200 int ignore;
3201 {
3202 long val;
3203
3204 if (cur_proc_ptr == (proc_t *) NULL)
3205 {
3206 as_warn (".frame outside of .ent");
3207 demand_empty_rest_of_line ();
3208 return;
3209 }
3210
3211 cur_proc_ptr->pdr.framereg = tc_get_register (1);
3212
3213 SKIP_WHITESPACE ();
3214 if (*input_line_pointer++ != ','
3215 || get_absolute_expression_and_terminator (&val) != ',')
3216 {
3217 as_warn ("Bad .frame directive");
3218 --input_line_pointer;
3219 demand_empty_rest_of_line ();
3220 return;
3221 }
3222
3223 cur_proc_ptr->pdr.frameoffset = val;
3224
3225 cur_proc_ptr->pdr.pcreg = tc_get_register (0);
3226
3227 #if 0 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according
3228 to Sandro. I don't yet know where this value should be stored, if
3229 anywhere. */
3230 demand_empty_rest_of_line ();
3231 #else
3232 s_ignore (42);
3233 #endif
3234 }
3235 \f
3236 /* Parse .mask directives. */
3237
3238 void
3239 ecoff_directive_mask (ignore)
3240 int ignore;
3241 {
3242 long val;
3243
3244 if (cur_proc_ptr == (proc_t *) NULL)
3245 {
3246 as_warn (".mask outside of .ent");
3247 demand_empty_rest_of_line ();
3248 return;
3249 }
3250
3251 if (get_absolute_expression_and_terminator (&val) != ',')
3252 {
3253 as_warn ("Bad .mask directive");
3254 --input_line_pointer;
3255 demand_empty_rest_of_line ();
3256 return;
3257 }
3258
3259 cur_proc_ptr->pdr.regmask = val;
3260 cur_proc_ptr->pdr.regoffset = get_absolute_expression ();
3261
3262 demand_empty_rest_of_line ();
3263 }
3264 \f
3265 /* Parse .loc directives. */
3266
3267 void
3268 ecoff_directive_loc (ignore)
3269 int ignore;
3270 {
3271 lineno_list_t *list;
3272 symint_t lineno;
3273
3274 if (cur_file_ptr == (efdr_t *) NULL)
3275 {
3276 as_warn (".loc before .file");
3277 demand_empty_rest_of_line ();
3278 return;
3279 }
3280
3281 if (now_seg != text_section)
3282 {
3283 as_warn (".loc outside of .text");
3284 demand_empty_rest_of_line ();
3285 return;
3286 }
3287
3288 /* Skip the file number. */
3289 SKIP_WHITESPACE ();
3290 get_absolute_expression ();
3291 SKIP_WHITESPACE ();
3292
3293 lineno = get_absolute_expression ();
3294
3295 #ifndef NO_LISTING
3296 if (listing)
3297 listing_source_line (lineno);
3298 #endif
3299
3300 /* If we're building stabs, then output a special label rather than
3301 ECOFF line number info. */
3302 if (stabs_seen)
3303 {
3304 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text,
3305 symbol_new ("L0\001", now_seg,
3306 (valueT) frag_now_fix (),
3307 frag_now),
3308 (bfd_vma) 0, 0, lineno);
3309 return;
3310 }
3311
3312 list = allocate_lineno_list ();
3313
3314 list->next = (lineno_list_t *) NULL;
3315 list->file = cur_file_ptr;
3316 list->proc = cur_proc_ptr;
3317 list->frag = frag_now;
3318 list->paddr = frag_now_fix ();
3319 list->lineno = lineno;
3320
3321 /* We don't want to merge files which have line numbers. */
3322 cur_file_ptr->fdr.fMerge = 0;
3323
3324 /* A .loc directive will sometimes appear before a .ent directive,
3325 which means that cur_proc_ptr will be NULL here. Arrange to
3326 patch this up. */
3327 if (cur_proc_ptr == (proc_t *) NULL)
3328 {
3329 lineno_list_t **pl;
3330
3331 pl = &noproc_lineno;
3332 while (*pl != (lineno_list_t *) NULL)
3333 pl = &(*pl)->next;
3334 *pl = list;
3335 }
3336 else
3337 {
3338 last_lineno = list;
3339 *last_lineno_ptr = list;
3340 last_lineno_ptr = &list->next;
3341 }
3342 }
3343
3344 /* The MIPS assembler sometimes inserts nop instructions in the
3345 instruction stream. When this happens, we must patch up the .loc
3346 information so that it points to the instruction after the nop. */
3347
3348 void
3349 ecoff_fix_loc (old_frag, old_frag_offset)
3350 fragS *old_frag;
3351 unsigned long old_frag_offset;
3352 {
3353 if (last_lineno != NULL
3354 && last_lineno->frag == old_frag
3355 && last_lineno->paddr == old_frag_offset)
3356 {
3357 last_lineno->frag = frag_now;
3358 last_lineno->paddr = frag_now_fix ();
3359 }
3360 }
3361 \f
3362 /* Make sure the @stabs symbol is emitted. */
3363
3364 static void
3365 mark_stabs (ignore)
3366 int ignore;
3367 {
3368 if (! stabs_seen)
3369 {
3370 /* Add a dummy @stabs dymbol. */
3371 stabs_seen = 1;
3372 (void) add_ecoff_symbol (stabs_symbol, stNil, scInfo,
3373 (symbolS *) NULL,
3374 (bfd_vma) 0, (symint_t) -1,
3375 ECOFF_MARK_STAB (0));
3376 }
3377 }
3378 \f
3379 /* Parse .weakext directives. */
3380
3381 void
3382 ecoff_directive_weakext (ignore)
3383 int ignore;
3384 {
3385 char *name;
3386 int c;
3387 symbolS *symbolP;
3388 expressionS exp;
3389
3390 name = input_line_pointer;
3391 c = get_symbol_end ();
3392 symbolP = symbol_find_or_make (name);
3393 *input_line_pointer = c;
3394
3395 SKIP_WHITESPACE ();
3396
3397 if (*input_line_pointer == ',')
3398 {
3399 if (S_IS_DEFINED (symbolP))
3400 {
3401 as_bad ("Ignoring attempt to redefine symbol `%s'.",
3402 S_GET_NAME (symbolP));
3403 ignore_rest_of_line ();
3404 return;
3405 }
3406
3407 ++input_line_pointer;
3408 SKIP_WHITESPACE ();
3409 if (! is_end_of_line[(unsigned char) *input_line_pointer])
3410 {
3411 expression (&exp);
3412 if (exp.X_op != O_symbol)
3413 {
3414 as_bad ("bad .weakext directive");
3415 ignore_rest_of_line();
3416 return;
3417 }
3418 symbolP->sy_value = exp;
3419 }
3420 }
3421
3422 S_SET_WEAK (symbolP);
3423
3424 demand_empty_rest_of_line ();
3425 }
3426 \f
3427 /* Handle .stabs directives. The actual parsing routine is done by a
3428 generic routine. This routine is called via OBJ_PROCESS_STAB.
3429 When this is called, input_line_pointer will be pointing at the
3430 value field of the stab.
3431
3432 .stabs directives have five fields:
3433 "string" a string, encoding the type information.
3434 code a numeric code, defined in <stab.h>
3435 0 a zero
3436 desc a zero or line number
3437 value a numeric value or an address.
3438
3439 If the value is relocatable, we transform this into:
3440 iss points as an index into string space
3441 value value from lookup of the name
3442 st st from lookup of the name
3443 sc sc from lookup of the name
3444 index code|CODE_MASK
3445
3446 If the value is not relocatable, we transform this into:
3447 iss points as an index into string space
3448 value value
3449 st st_Nil
3450 sc sc_Nil
3451 index code|CODE_MASK
3452
3453 .stabn directives have four fields (string is null):
3454 code a numeric code, defined in <stab.h>
3455 0 a zero
3456 desc a zero or a line number
3457 value a numeric value or an address. */
3458
3459 void
3460 ecoff_stab (sec, what, string, type, other, desc)
3461 segT sec;
3462 int what;
3463 const char *string;
3464 int type;
3465 int other;
3466 int desc;
3467 {
3468 efdr_t *save_file_ptr = cur_file_ptr;
3469 symbolS *sym;
3470 symint_t value;
3471 bfd_vma addend;
3472 st_t st;
3473 sc_t sc;
3474 symint_t indx;
3475 localsym_t *hold = NULL;
3476
3477 ecoff_debugging_seen = 1;
3478
3479 /* We don't handle .stabd. */
3480 if (what != 's' && what != 'n')
3481 {
3482 as_bad (".stab%c is not supported", what);
3483 return;
3484 }
3485
3486 /* A .stabn uses a null name, not an empty string. */
3487 if (what == 'n')
3488 string = NULL;
3489
3490 /* We ignore the other field. */
3491 if (other != 0)
3492 as_warn (".stab%c: ignoring non-zero other field", what);
3493
3494 /* Make sure we have a current file. */
3495 if (cur_file_ptr == (efdr_t *) NULL)
3496 {
3497 add_file ((const char *) NULL, 0, 1);
3498 save_file_ptr = cur_file_ptr;
3499 }
3500
3501 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
3502 signal to gdb. */
3503 if (stabs_seen == 0)
3504 mark_stabs (0);
3505
3506 /* Line number stabs are handled differently, since they have two
3507 values, the line number and the address of the label. We use the
3508 index field (aka desc) to hold the line number, and the value
3509 field to hold the address. The symbol type is st_Label, which
3510 should be different from the other stabs, so that gdb can
3511 recognize it. */
3512 if (type == N_SLINE)
3513 {
3514 SYMR dummy_symr;
3515 char *name;
3516 char name_end;
3517
3518 #ifndef NO_LISTING
3519 if (listing)
3520 listing_source_line ((unsigned int) desc);
3521 #endif
3522
3523 dummy_symr.index = desc;
3524 if (dummy_symr.index != desc)
3525 {
3526 as_warn ("Line number (%d) for .stab%c directive cannot fit in index field (20 bits)",
3527 desc, what);
3528 return;
3529 }
3530
3531 name = input_line_pointer;
3532 name_end = get_symbol_end ();
3533
3534 sym = symbol_find_or_make (name);
3535 *input_line_pointer = name_end;
3536
3537 value = 0;
3538 addend = 0;
3539 st = st_Label;
3540 sc = sc_Text;
3541 indx = desc;
3542 }
3543 else
3544 {
3545 #ifndef NO_LISTING
3546 if (listing && (type == N_SO || type == N_SOL))
3547 listing_source_file (string);
3548 #endif
3549
3550 if (isdigit (*input_line_pointer)
3551 || *input_line_pointer == '-'
3552 || *input_line_pointer == '+')
3553 {
3554 st = st_Nil;
3555 sc = sc_Nil;
3556 sym = (symbolS *) NULL;
3557 value = get_absolute_expression ();
3558 addend = 0;
3559 }
3560 else if (! is_name_beginner ((unsigned char) *input_line_pointer))
3561 {
3562 as_warn ("Illegal .stab%c directive, bad character", what);
3563 return;
3564 }
3565 else
3566 {
3567 expressionS exp;
3568
3569 sc = sc_Nil;
3570 st = st_Nil;
3571
3572 expression (&exp);
3573 if (exp.X_op == O_constant)
3574 {
3575 sym = NULL;
3576 value = exp.X_add_number;
3577 addend = 0;
3578 }
3579 else if (exp.X_op == O_symbol)
3580 {
3581 sym = exp.X_add_symbol;
3582 value = 0;
3583 addend = exp.X_add_number;
3584 }
3585 else
3586 {
3587 sym = make_expr_symbol (&exp);
3588 value = 0;
3589 addend = 0;
3590 }
3591 }
3592
3593 indx = ECOFF_MARK_STAB (type);
3594 }
3595
3596 /* Don't store the stabs symbol we are creating as the type of the
3597 ECOFF symbol. We want to compute the type of the ECOFF symbol
3598 independently. */
3599 if (sym != (symbolS *) NULL)
3600 hold = sym->ecoff_symbol;
3601
3602 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx);
3603
3604 if (sym != (symbolS *) NULL)
3605 sym->ecoff_symbol = hold;
3606
3607 /* Restore normal file type. */
3608 cur_file_ptr = save_file_ptr;
3609 }
3610 \f
3611 /* Frob an ECOFF symbol. Small common symbols go into a special
3612 .scommon section rather than bfd_com_section. */
3613
3614 void
3615 ecoff_frob_symbol (sym)
3616 symbolS *sym;
3617 {
3618 if (S_IS_COMMON (sym)
3619 && S_GET_VALUE (sym) > 0
3620 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput))
3621 {
3622 static asection scom_section;
3623 static asymbol scom_symbol;
3624
3625 /* We must construct a fake section similar to bfd_com_section
3626 but with the name .scommon. */
3627 if (scom_section.name == NULL)
3628 {
3629 scom_section = bfd_com_section;
3630 scom_section.name = ".scommon";
3631 scom_section.output_section = &scom_section;
3632 scom_section.symbol = &scom_symbol;
3633 scom_section.symbol_ptr_ptr = &scom_section.symbol;
3634 scom_symbol = *bfd_com_section.symbol;
3635 scom_symbol.name = ".scommon";
3636 scom_symbol.section = &scom_section;
3637 }
3638 S_SET_SEGMENT (sym, &scom_section);
3639 }
3640
3641 /* Double check weak symbols. */
3642 if (sym->bsym->flags & BSF_WEAK)
3643 {
3644 if (S_IS_COMMON (sym))
3645 as_bad ("Symbol `%s' can not be both weak and common",
3646 S_GET_NAME (sym));
3647 }
3648 }
3649 \f
3650 /* Add bytes to the symbolic information buffer. */
3651
3652 static char *
3653 ecoff_add_bytes (buf, bufend, bufptr, need)
3654 char **buf;
3655 char **bufend;
3656 char *bufptr;
3657 unsigned long need;
3658 {
3659 unsigned long at;
3660 unsigned long want;
3661
3662 at = bufptr - *buf;
3663 need -= *bufend - bufptr;
3664 if (need < PAGE_SIZE)
3665 need = PAGE_SIZE;
3666 want = (*bufend - *buf) + need;
3667 *buf = xrealloc (*buf, want);
3668 *bufend = *buf + want;
3669 return *buf + at;
3670 }
3671
3672 /* Adjust the symbolic information buffer to the alignment required
3673 for the ECOFF target debugging information. */
3674
3675 static unsigned long
3676 ecoff_padding_adjust (backend, buf, bufend, offset, bufptrptr)
3677 const struct ecoff_debug_swap *backend;
3678 char **buf;
3679 char **bufend;
3680 unsigned long offset;
3681 char **bufptrptr;
3682 {
3683 bfd_size_type align;
3684
3685 align = backend->debug_align;
3686 if ((offset & (align - 1)) != 0)
3687 {
3688 unsigned long add;
3689
3690 add = align - (offset & (align - 1));
3691 if (*bufend - (*buf + offset) < add)
3692 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add);
3693 memset (*buf + offset, 0, add);
3694 offset += add;
3695 if (bufptrptr != (char **) NULL)
3696 *bufptrptr = *buf + offset;
3697 }
3698
3699 return offset;
3700 }
3701
3702 /* Build the line number information. */
3703
3704 static unsigned long
3705 ecoff_build_lineno (backend, buf, bufend, offset, linecntptr)
3706 const struct ecoff_debug_swap *backend;
3707 char **buf;
3708 char **bufend;
3709 unsigned long offset;
3710 long *linecntptr;
3711 {
3712 char *bufptr;
3713 register lineno_list_t *l;
3714 lineno_list_t *last;
3715 efdr_t *file;
3716 proc_t *proc;
3717 unsigned long c;
3718 long iline;
3719 long totcount;
3720 lineno_list_t first;
3721
3722 if (linecntptr != (long *) NULL)
3723 *linecntptr = 0;
3724
3725 bufptr = *buf + offset;
3726
3727 file = (efdr_t *) NULL;
3728 proc = (proc_t *) NULL;
3729 last = (lineno_list_t *) NULL;
3730 c = offset;
3731 iline = 0;
3732 totcount = 0;
3733
3734 /* For some reason the address of the first procedure is ignored
3735 when reading line numbers. This doesn't matter if the address of
3736 the first procedure is 0, but when gcc is generating MIPS
3737 embedded PIC code, it will put strings in the .text section
3738 before the first procedure. We cope by inserting a dummy line if
3739 the address of the first procedure is not 0. Hopefully this
3740 won't screw things up too badly. */
3741 if (first_proc_ptr != (proc_t *) NULL
3742 && first_lineno != (lineno_list_t *) NULL
3743 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym)
3744 + bfd_get_section_vma (stdoutput,
3745 S_GET_SEGMENT (first_proc_ptr->sym->as_sym)))
3746 != 0))
3747 {
3748 first.file = first_lineno->file;
3749 first.proc = first_lineno->proc;
3750 first.frag = &zero_address_frag;
3751 first.paddr = 0;
3752 first.lineno = 0;
3753
3754 first.next = first_lineno;
3755 first_lineno = &first;
3756 }
3757
3758 for (l = first_lineno; l != (lineno_list_t *) NULL; l = l->next)
3759 {
3760 long count;
3761 long delta;
3762
3763 /* Get the offset to the memory address of the next line number
3764 (in words). Do this first, so that we can skip ahead to the
3765 next useful line number entry. */
3766 if (l->next == (lineno_list_t *) NULL)
3767 {
3768 /* We want a count of zero, but it will be decremented
3769 before it is used. */
3770 count = 1;
3771 }
3772 else if (l->next->frag->fr_address + l->next->paddr
3773 > l->frag->fr_address + l->paddr)
3774 {
3775 count = ((l->next->frag->fr_address + l->next->paddr
3776 - (l->frag->fr_address + l->paddr))
3777 >> 2);
3778 }
3779 else
3780 {
3781 /* Don't change last, so we still get the right delta. */
3782 continue;
3783 }
3784
3785 if (l->file != file || l->proc != proc)
3786 {
3787 if (l->proc != proc && proc != (proc_t *) NULL)
3788 proc->pdr.lnHigh = last->lineno;
3789 if (l->file != file && file != (efdr_t *) NULL)
3790 {
3791 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3792 file->fdr.cline = totcount + count;
3793 if (linecntptr != (long *) NULL)
3794 *linecntptr += totcount + count;
3795 totcount = 0;
3796 }
3797
3798 if (l->file != file)
3799 {
3800 efdr_t *last_file = file;
3801
3802 file = l->file;
3803 if (last_file != (efdr_t *) NULL)
3804 file->fdr.ilineBase
3805 = last_file->fdr.ilineBase + last_file->fdr.cline;
3806 else
3807 file->fdr.ilineBase = 0;
3808 file->fdr.cbLineOffset = c;
3809 }
3810 if (l->proc != proc)
3811 {
3812 proc = l->proc;
3813 if (proc != (proc_t *) NULL)
3814 {
3815 proc->pdr.lnLow = l->lineno;
3816 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset;
3817 proc->pdr.iline = totcount;
3818 }
3819 }
3820
3821 last = (lineno_list_t *) NULL;
3822 }
3823
3824 totcount += count;
3825
3826 /* Get the offset to this line number. */
3827 if (last == (lineno_list_t *) NULL)
3828 delta = 0;
3829 else
3830 delta = l->lineno - last->lineno;
3831
3832 /* Put in the offset to this line number. */
3833 while (delta != 0)
3834 {
3835 int setcount;
3836
3837 /* 1 is added to each count read. */
3838 --count;
3839 /* We can only adjust the word count by up to 15 words at a
3840 time. */
3841 if (count <= 0x0f)
3842 {
3843 setcount = count;
3844 count = 0;
3845 }
3846 else
3847 {
3848 setcount = 0x0f;
3849 count -= 0x0f;
3850 }
3851 if (delta >= -7 && delta <= 7)
3852 {
3853 if (bufptr >= *bufend)
3854 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3855 *bufptr++ = setcount + (delta << 4);
3856 delta = 0;
3857 ++c;
3858 }
3859 else
3860 {
3861 int set;
3862
3863 if (*bufend - bufptr < 3)
3864 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3);
3865 *bufptr++ = setcount + (8 << 4);
3866 if (delta < -0x8000)
3867 {
3868 set = -0x8000;
3869 delta += 0x8000;
3870 }
3871 else if (delta > 0x7fff)
3872 {
3873 set = 0x7fff;
3874 delta -= 0x7fff;
3875 }
3876 else
3877 {
3878 set = delta;
3879 delta = 0;
3880 }
3881 *bufptr++ = set >> 8;
3882 *bufptr++ = set & 0xffff;
3883 c += 3;
3884 }
3885 }
3886
3887 /* Finish adjusting the count. */
3888 while (count > 0)
3889 {
3890 if (bufptr >= *bufend)
3891 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3892 /* 1 is added to each count read. */
3893 --count;
3894 if (count > 0x0f)
3895 {
3896 *bufptr++ = 0x0f;
3897 count -= 0x0f;
3898 }
3899 else
3900 {
3901 *bufptr++ = count;
3902 count = 0;
3903 }
3904 ++c;
3905 }
3906
3907 ++iline;
3908 last = l;
3909 }
3910
3911 if (proc != (proc_t *) NULL)
3912 proc->pdr.lnHigh = last->lineno;
3913 if (file != (efdr_t *) NULL)
3914 {
3915 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3916 file->fdr.cline = totcount;
3917 }
3918
3919 if (linecntptr != (long *) NULL)
3920 *linecntptr += totcount;
3921
3922 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr);
3923
3924 return c;
3925 }
3926
3927 /* Build and swap out the symbols. */
3928
3929 static unsigned long
3930 ecoff_build_symbols (backend, buf, bufend, offset)
3931 const struct ecoff_debug_swap *backend;
3932 char **buf;
3933 char **bufend;
3934 unsigned long offset;
3935 {
3936 const bfd_size_type external_sym_size = backend->external_sym_size;
3937 void (* const swap_sym_out) PARAMS ((bfd *, const SYMR *, PTR))
3938 = backend->swap_sym_out;
3939 char *sym_out;
3940 long isym;
3941 vlinks_t *file_link;
3942
3943 sym_out = *buf + offset;
3944
3945 isym = 0;
3946
3947 /* The symbols are stored by file. */
3948 for (file_link = file_desc.first;
3949 file_link != (vlinks_t *) NULL;
3950 file_link = file_link->next)
3951 {
3952 int ifilesym;
3953 int fil_cnt;
3954 efdr_t *fil_ptr;
3955 efdr_t *fil_end;
3956
3957 if (file_link->next == (vlinks_t *) NULL)
3958 fil_cnt = file_desc.objects_last_page;
3959 else
3960 fil_cnt = file_desc.objects_per_page;
3961 fil_ptr = file_link->datum->file;
3962 fil_end = fil_ptr + fil_cnt;
3963 for (; fil_ptr < fil_end; fil_ptr++)
3964 {
3965 vlinks_t *sym_link;
3966
3967 fil_ptr->fdr.isymBase = isym;
3968 ifilesym = isym;
3969 for (sym_link = fil_ptr->symbols.first;
3970 sym_link != (vlinks_t *) NULL;
3971 sym_link = sym_link->next)
3972 {
3973 int sym_cnt;
3974 localsym_t *sym_ptr;
3975 localsym_t *sym_end;
3976
3977 if (sym_link->next == (vlinks_t *) NULL)
3978 sym_cnt = fil_ptr->symbols.objects_last_page;
3979 else
3980 sym_cnt = fil_ptr->symbols.objects_per_page;
3981 sym_ptr = sym_link->datum->sym;
3982 sym_end = sym_ptr + sym_cnt;
3983 for (; sym_ptr < sym_end; sym_ptr++)
3984 {
3985 int local;
3986 symbolS *as_sym;
3987 forward_t *f;
3988
3989 know (sym_ptr->file_ptr == fil_ptr);
3990
3991 /* If there is no associated gas symbol, then this
3992 is a pure debugging symbol. We have already
3993 added the name (if any) to fil_ptr->strings.
3994 Otherwise we must decide whether this is an
3995 external or a local symbol (actually, it may be
3996 both if the local provides additional debugging
3997 information for the external). */
3998 local = 1;
3999 as_sym = sym_ptr->as_sym;
4000 if (as_sym != (symbolS *) NULL)
4001 {
4002 symint_t indx;
4003
4004 /* The value of a block start symbol is the
4005 offset from the start of the procedure. For
4006 other symbols we just use the gas value (but
4007 we must offset it by the vma of the section,
4008 just as BFD does, because BFD will not see
4009 this value). */
4010 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block
4011 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text)
4012 {
4013 symbolS *begin_sym;
4014
4015 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4016 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4017 if (S_GET_SEGMENT (as_sym)
4018 != S_GET_SEGMENT (begin_sym))
4019 as_warn (".begin/.bend in different segments");
4020 sym_ptr->ecoff_sym.asym.value =
4021 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4022 }
4023 else
4024 sym_ptr->ecoff_sym.asym.value =
4025 (S_GET_VALUE (as_sym)
4026 + bfd_get_section_vma (stdoutput,
4027 S_GET_SEGMENT (as_sym))
4028 + sym_ptr->addend);
4029
4030 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym);
4031
4032 /* Set st_Proc to st_StaticProc for local
4033 functions. */
4034 if (sym_ptr->ecoff_sym.asym.st == st_Proc
4035 && S_IS_DEFINED (as_sym)
4036 && ! S_IS_EXTERNAL (as_sym)
4037 && ! S_IS_WEAK (as_sym))
4038 sym_ptr->ecoff_sym.asym.st = st_StaticProc;
4039
4040 /* Get the type and storage class based on where
4041 the symbol actually wound up. Traditionally,
4042 N_LBRAC and N_RBRAC are *not* relocated. */
4043 indx = sym_ptr->ecoff_sym.asym.index;
4044 if (sym_ptr->ecoff_sym.asym.st == st_Nil
4045 && sym_ptr->ecoff_sym.asym.sc == sc_Nil
4046 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4047 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC)
4048 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC))))
4049 {
4050 segT seg;
4051 const char *segname;
4052 st_t st;
4053 sc_t sc;
4054
4055 seg = S_GET_SEGMENT (as_sym);
4056 segname = segment_name (seg);
4057
4058 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4059 && (S_IS_EXTERNAL (as_sym)
4060 || S_IS_WEAK (as_sym)
4061 || ! S_IS_DEFINED (as_sym)))
4062 {
4063 if ((as_sym->bsym->flags & BSF_FUNCTION) != 0)
4064 st = st_Proc;
4065 else
4066 st = st_Global;
4067 }
4068 else if (seg == text_section)
4069 st = st_Label;
4070 else
4071 st = st_Static;
4072
4073 if (! S_IS_DEFINED (as_sym))
4074 {
4075 if (as_sym->ecoff_extern_size == 0
4076 || (as_sym->ecoff_extern_size
4077 > bfd_get_gp_size (stdoutput)))
4078 sc = sc_Undefined;
4079 else
4080 {
4081 sc = sc_SUndefined;
4082 sym_ptr->ecoff_sym.asym.value =
4083 as_sym->ecoff_extern_size;
4084 }
4085 #ifdef S_SET_SIZE
4086 S_SET_SIZE (as_sym, as_sym->ecoff_extern_size);
4087 #endif
4088 }
4089 else if (S_IS_COMMON (as_sym))
4090 {
4091 if (S_GET_VALUE (as_sym) > 0
4092 && (S_GET_VALUE (as_sym)
4093 <= bfd_get_gp_size (stdoutput)))
4094 sc = sc_SCommon;
4095 else
4096 sc = sc_Common;
4097 }
4098 else if (seg == text_section)
4099 sc = sc_Text;
4100 else if (seg == data_section)
4101 sc = sc_Data;
4102 else if (strcmp (segname, ".rdata") == 0
4103 || strcmp (segname, ".rodata") == 0)
4104 sc = sc_RData;
4105 else if (strcmp (segname, ".sdata") == 0)
4106 sc = sc_SData;
4107 else if (seg == bss_section)
4108 sc = sc_Bss;
4109 else if (strcmp (segname, ".sbss") == 0)
4110 sc = sc_SBss;
4111 else if (seg == &bfd_abs_section)
4112 sc = sc_Abs;
4113 else
4114 {
4115 /* This must be a user named section.
4116 This is not possible in ECOFF, but it
4117 is in ELF. */
4118 sc = sc_Data;
4119 }
4120
4121 sym_ptr->ecoff_sym.asym.st = (int) st;
4122 sym_ptr->ecoff_sym.asym.sc = (int) sc;
4123 }
4124
4125 /* This is just an external symbol if it is
4126 outside a procedure and it has a type.
4127 FIXME: g++ will generate symbols which have
4128 different names in the debugging information
4129 than the actual symbol. Should we handle
4130 them here? */
4131 if ((S_IS_EXTERNAL (as_sym)
4132 || S_IS_WEAK (as_sym)
4133 || ! S_IS_DEFINED (as_sym))
4134 && sym_ptr->proc_ptr == (proc_t *) NULL
4135 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil
4136 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym))
4137 local = 0;
4138
4139 /* This is just an external symbol if it is a
4140 common symbol. */
4141 if (S_IS_COMMON (as_sym))
4142 local = 0;
4143
4144 /* If an st_end symbol has an associated gas
4145 symbol, then it is a local label created for
4146 a .bend or .end directive. Stabs line
4147 numbers will have \001 in the names. */
4148 if (local
4149 && sym_ptr->ecoff_sym.asym.st != st_End
4150 && strchr (sym_ptr->name, '\001') == 0)
4151 sym_ptr->ecoff_sym.asym.iss =
4152 add_string (&fil_ptr->strings,
4153 fil_ptr->str_hash,
4154 sym_ptr->name,
4155 (shash_t **) NULL);
4156 }
4157
4158 /* We now know the index of this symbol; fill in
4159 locations that have been waiting for that
4160 information. */
4161 if (sym_ptr->begin_ptr != (localsym_t *) NULL)
4162 {
4163 localsym_t *begin_ptr;
4164 st_t begin_type;
4165
4166 know (local);
4167 begin_ptr = sym_ptr->begin_ptr;
4168 know (begin_ptr->sym_index != -1);
4169 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index;
4170 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4171 sym_ptr->ecoff_sym.asym.iss =
4172 begin_ptr->ecoff_sym.asym.iss;
4173
4174 begin_type = begin_ptr->ecoff_sym.asym.st;
4175 if (begin_type == st_File
4176 || begin_type == st_Block)
4177 {
4178 begin_ptr->ecoff_sym.asym.index =
4179 isym - ifilesym + 1;
4180 (*swap_sym_out) (stdoutput,
4181 &begin_ptr->ecoff_sym.asym,
4182 (*buf
4183 + offset
4184 + (begin_ptr->sym_index
4185 * external_sym_size)));
4186 }
4187 else
4188 {
4189 know (begin_ptr->index_ptr != (aux_t *) NULL);
4190 begin_ptr->index_ptr->data.isym =
4191 isym - ifilesym + 1;
4192 }
4193
4194 /* The value of the symbol marking the end of a
4195 procedure is the size of the procedure. The
4196 value of the symbol marking the end of a
4197 block is the offset from the start of the
4198 procedure to the block. */
4199 if (begin_type == st_Proc
4200 || begin_type == st_StaticProc)
4201 {
4202 know (as_sym != (symbolS *) NULL);
4203 know (begin_ptr->as_sym != (symbolS *) NULL);
4204 if (S_GET_SEGMENT (as_sym)
4205 != S_GET_SEGMENT (begin_ptr->as_sym))
4206 as_warn (".begin/.bend in different segments");
4207 sym_ptr->ecoff_sym.asym.value =
4208 (S_GET_VALUE (as_sym)
4209 - S_GET_VALUE (begin_ptr->as_sym));
4210
4211 /* If the size is odd, this is probably a
4212 mips16 function; force it to be even. */
4213 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0)
4214 ++sym_ptr->ecoff_sym.asym.value;
4215
4216 #ifdef S_SET_SIZE
4217 S_SET_SIZE (begin_ptr->as_sym,
4218 sym_ptr->ecoff_sym.asym.value);
4219 #endif
4220 }
4221 else if (begin_type == st_Block
4222 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4223 {
4224 symbolS *begin_sym;
4225
4226 know (as_sym != (symbolS *) NULL);
4227 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4228 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4229 if (S_GET_SEGMENT (as_sym)
4230 != S_GET_SEGMENT (begin_sym))
4231 as_warn (".begin/.bend in different segments");
4232 sym_ptr->ecoff_sym.asym.value =
4233 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4234 }
4235 }
4236
4237 for (f = sym_ptr->forward_ref;
4238 f != (forward_t *) NULL;
4239 f = f->next)
4240 {
4241 know (local);
4242 f->ifd_ptr->data.isym = fil_ptr->file_index;
4243 f->index_ptr->data.rndx.index = isym - ifilesym;
4244 }
4245
4246 if (local)
4247 {
4248 if (*bufend - sym_out < external_sym_size)
4249 sym_out = ecoff_add_bytes (buf, bufend,
4250 sym_out,
4251 external_sym_size);
4252 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym,
4253 sym_out);
4254 sym_out += external_sym_size;
4255
4256 sym_ptr->sym_index = isym;
4257
4258 if (sym_ptr->proc_ptr != (proc_t *) NULL
4259 && sym_ptr->proc_ptr->sym == sym_ptr)
4260 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym;
4261
4262 ++isym;
4263 }
4264
4265 /* Record the local symbol index and file number in
4266 case this is an external symbol. Note that this
4267 destroys the asym.index field. */
4268 if (as_sym != (symbolS *) NULL
4269 && as_sym->ecoff_symbol == sym_ptr)
4270 {
4271 if ((sym_ptr->ecoff_sym.asym.st == st_Proc
4272 || sym_ptr->ecoff_sym.asym.st == st_StaticProc)
4273 && local)
4274 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1;
4275 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index;
4276
4277 /* Don't try to merge an FDR which has an
4278 external symbol attached to it. */
4279 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym))
4280 fil_ptr->fdr.fMerge = 0;
4281 }
4282 }
4283 }
4284 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase;
4285 }
4286 }
4287
4288 return offset + isym * external_sym_size;
4289 }
4290
4291 /* Swap out the procedure information. */
4292
4293 static unsigned long
4294 ecoff_build_procs (backend, buf, bufend, offset)
4295 const struct ecoff_debug_swap *backend;
4296 char **buf;
4297 char **bufend;
4298 unsigned long offset;
4299 {
4300 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4301 void (* const swap_pdr_out) PARAMS ((bfd *, const PDR *, PTR))
4302 = backend->swap_pdr_out;
4303 char *pdr_out;
4304 long iproc;
4305 vlinks_t *file_link;
4306
4307 pdr_out = *buf + offset;
4308
4309 iproc = 0;
4310
4311 /* The procedures are stored by file. */
4312 for (file_link = file_desc.first;
4313 file_link != (vlinks_t *) NULL;
4314 file_link = file_link->next)
4315 {
4316 int fil_cnt;
4317 efdr_t *fil_ptr;
4318 efdr_t *fil_end;
4319
4320 if (file_link->next == (vlinks_t *) NULL)
4321 fil_cnt = file_desc.objects_last_page;
4322 else
4323 fil_cnt = file_desc.objects_per_page;
4324 fil_ptr = file_link->datum->file;
4325 fil_end = fil_ptr + fil_cnt;
4326 for (; fil_ptr < fil_end; fil_ptr++)
4327 {
4328 vlinks_t *proc_link;
4329 int first;
4330
4331 fil_ptr->fdr.ipdFirst = iproc;
4332 first = 1;
4333 for (proc_link = fil_ptr->procs.first;
4334 proc_link != (vlinks_t *) NULL;
4335 proc_link = proc_link->next)
4336 {
4337 int prc_cnt;
4338 proc_t *proc_ptr;
4339 proc_t *proc_end;
4340
4341 if (proc_link->next == (vlinks_t *) NULL)
4342 prc_cnt = fil_ptr->procs.objects_last_page;
4343 else
4344 prc_cnt = fil_ptr->procs.objects_per_page;
4345 proc_ptr = proc_link->datum->proc;
4346 proc_end = proc_ptr + prc_cnt;
4347 for (; proc_ptr < proc_end; proc_ptr++)
4348 {
4349 symbolS *adr_sym;
4350 unsigned long adr;
4351
4352 adr_sym = proc_ptr->sym->as_sym;
4353 adr = (S_GET_VALUE (adr_sym)
4354 + bfd_get_section_vma (stdoutput,
4355 S_GET_SEGMENT (adr_sym)));
4356 if (first)
4357 {
4358 /* This code used to force the adr of the very
4359 first fdr to be 0. However, the native tools
4360 don't do that, and I can't remember why it
4361 used to work that way, so I took it out. */
4362 fil_ptr->fdr.adr = adr;
4363 first = 0;
4364 }
4365 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr;
4366 if (*bufend - pdr_out < external_pdr_size)
4367 pdr_out = ecoff_add_bytes (buf, bufend,
4368 pdr_out,
4369 external_pdr_size);
4370 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out);
4371 pdr_out += external_pdr_size;
4372 ++iproc;
4373 }
4374 }
4375 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst;
4376 }
4377 }
4378
4379 return offset + iproc * external_pdr_size;
4380 }
4381
4382 /* Swap out the aux information. */
4383
4384 static unsigned long
4385 ecoff_build_aux (backend, buf, bufend, offset)
4386 const struct ecoff_debug_swap *backend;
4387 char **buf;
4388 char **bufend;
4389 unsigned long offset;
4390 {
4391 int bigendian;
4392 union aux_ext *aux_out;
4393 long iaux;
4394 vlinks_t *file_link;
4395
4396 bigendian = bfd_big_endian (stdoutput);
4397
4398 aux_out = (union aux_ext *) (*buf + offset);
4399
4400 iaux = 0;
4401
4402 /* The aux entries are stored by file. */
4403 for (file_link = file_desc.first;
4404 file_link != (vlinks_t *) NULL;
4405 file_link = file_link->next)
4406 {
4407 int fil_cnt;
4408 efdr_t *fil_ptr;
4409 efdr_t *fil_end;
4410
4411 if (file_link->next == (vlinks_t *) NULL)
4412 fil_cnt = file_desc.objects_last_page;
4413 else
4414 fil_cnt = file_desc.objects_per_page;
4415 fil_ptr = file_link->datum->file;
4416 fil_end = fil_ptr + fil_cnt;
4417 for (; fil_ptr < fil_end; fil_ptr++)
4418 {
4419 vlinks_t *aux_link;
4420
4421 fil_ptr->fdr.fBigendian = bigendian;
4422 fil_ptr->fdr.iauxBase = iaux;
4423 for (aux_link = fil_ptr->aux_syms.first;
4424 aux_link != (vlinks_t *) NULL;
4425 aux_link = aux_link->next)
4426 {
4427 int aux_cnt;
4428 aux_t *aux_ptr;
4429 aux_t *aux_end;
4430
4431 if (aux_link->next == (vlinks_t *) NULL)
4432 aux_cnt = fil_ptr->aux_syms.objects_last_page;
4433 else
4434 aux_cnt = fil_ptr->aux_syms.objects_per_page;
4435 aux_ptr = aux_link->datum->aux;
4436 aux_end = aux_ptr + aux_cnt;
4437 for (; aux_ptr < aux_end; aux_ptr++)
4438 {
4439 if (*bufend - (char *) aux_out < sizeof (union aux_ext))
4440 aux_out = ((union aux_ext *)
4441 ecoff_add_bytes (buf, bufend,
4442 (char *) aux_out,
4443 sizeof (union aux_ext)));
4444 switch (aux_ptr->type)
4445 {
4446 case aux_tir:
4447 (*backend->swap_tir_out) (bigendian,
4448 &aux_ptr->data.ti,
4449 &aux_out->a_ti);
4450 break;
4451 case aux_rndx:
4452 (*backend->swap_rndx_out) (bigendian,
4453 &aux_ptr->data.rndx,
4454 &aux_out->a_rndx);
4455 break;
4456 case aux_dnLow:
4457 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow,
4458 aux_out);
4459 break;
4460 case aux_dnHigh:
4461 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh,
4462 aux_out);
4463 break;
4464 case aux_isym:
4465 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym,
4466 aux_out);
4467 break;
4468 case aux_iss:
4469 AUX_PUT_ISS (bigendian, aux_ptr->data.iss,
4470 aux_out);
4471 break;
4472 case aux_width:
4473 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width,
4474 aux_out);
4475 break;
4476 case aux_count:
4477 AUX_PUT_COUNT (bigendian, aux_ptr->data.count,
4478 aux_out);
4479 break;
4480 }
4481
4482 ++aux_out;
4483 ++iaux;
4484 }
4485 }
4486 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase;
4487 }
4488 }
4489
4490 return ecoff_padding_adjust (backend, buf, bufend,
4491 offset + iaux * sizeof (union aux_ext),
4492 (char **) NULL);
4493 }
4494
4495 /* Copy out the strings from a varray_t. This returns the number of
4496 bytes copied, rather than the new offset. */
4497
4498 static unsigned long
4499 ecoff_build_strings (buf, bufend, offset, vp)
4500 char **buf;
4501 char **bufend;
4502 unsigned long offset;
4503 varray_t *vp;
4504 {
4505 unsigned long istr;
4506 char *str_out;
4507 vlinks_t *str_link;
4508
4509 str_out = *buf + offset;
4510
4511 istr = 0;
4512
4513 for (str_link = vp->first;
4514 str_link != (vlinks_t *) NULL;
4515 str_link = str_link->next)
4516 {
4517 unsigned long str_cnt;
4518
4519 if (str_link->next == (vlinks_t *) NULL)
4520 str_cnt = vp->objects_last_page;
4521 else
4522 str_cnt = vp->objects_per_page;
4523
4524 if (*bufend - str_out < str_cnt)
4525 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt);
4526
4527 memcpy (str_out, str_link->datum->byte, str_cnt);
4528 str_out += str_cnt;
4529 istr += str_cnt;
4530 }
4531
4532 return istr;
4533 }
4534
4535 /* Dump out the local strings. */
4536
4537 static unsigned long
4538 ecoff_build_ss (backend, buf, bufend, offset)
4539 const struct ecoff_debug_swap *backend;
4540 char **buf;
4541 char **bufend;
4542 unsigned long offset;
4543 {
4544 long iss;
4545 vlinks_t *file_link;
4546
4547 iss = 0;
4548
4549 for (file_link = file_desc.first;
4550 file_link != (vlinks_t *) NULL;
4551 file_link = file_link->next)
4552 {
4553 int fil_cnt;
4554 efdr_t *fil_ptr;
4555 efdr_t *fil_end;
4556
4557 if (file_link->next == (vlinks_t *) NULL)
4558 fil_cnt = file_desc.objects_last_page;
4559 else
4560 fil_cnt = file_desc.objects_per_page;
4561 fil_ptr = file_link->datum->file;
4562 fil_end = fil_ptr + fil_cnt;
4563 for (; fil_ptr < fil_end; fil_ptr++)
4564 {
4565 long ss_cnt;
4566
4567 fil_ptr->fdr.issBase = iss;
4568 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss,
4569 &fil_ptr->strings);
4570 fil_ptr->fdr.cbSs = ss_cnt;
4571 iss += ss_cnt;
4572 }
4573 }
4574
4575 return ecoff_padding_adjust (backend, buf, bufend, offset + iss,
4576 (char **) NULL);
4577 }
4578
4579 /* Swap out the file descriptors. */
4580
4581 static unsigned long
4582 ecoff_build_fdr (backend, buf, bufend, offset)
4583 const struct ecoff_debug_swap *backend;
4584 char **buf;
4585 char **bufend;
4586 unsigned long offset;
4587 {
4588 const bfd_size_type external_fdr_size = backend->external_fdr_size;
4589 void (* const swap_fdr_out) PARAMS ((bfd *, const FDR *, PTR))
4590 = backend->swap_fdr_out;
4591 long ifile;
4592 char *fdr_out;
4593 vlinks_t *file_link;
4594
4595 ifile = 0;
4596
4597 fdr_out = *buf + offset;
4598
4599 for (file_link = file_desc.first;
4600 file_link != (vlinks_t *) NULL;
4601 file_link = file_link->next)
4602 {
4603 int fil_cnt;
4604 efdr_t *fil_ptr;
4605 efdr_t *fil_end;
4606
4607 if (file_link->next == (vlinks_t *) NULL)
4608 fil_cnt = file_desc.objects_last_page;
4609 else
4610 fil_cnt = file_desc.objects_per_page;
4611 fil_ptr = file_link->datum->file;
4612 fil_end = fil_ptr + fil_cnt;
4613 for (; fil_ptr < fil_end; fil_ptr++)
4614 {
4615 if (*bufend - fdr_out < external_fdr_size)
4616 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out,
4617 external_fdr_size);
4618 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out);
4619 fdr_out += external_fdr_size;
4620 ++ifile;
4621 }
4622 }
4623
4624 return offset + ifile * external_fdr_size;
4625 }
4626
4627 /* Set up the external symbols. These are supposed to be handled by
4628 the backend. This routine just gets the right information and
4629 calls a backend function to deal with it. */
4630
4631 static void
4632 ecoff_setup_ext ()
4633 {
4634 register symbolS *sym;
4635
4636 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4637 {
4638 if (sym->ecoff_symbol == NULL)
4639 continue;
4640
4641 /* If this is a local symbol, then force the fields to zero. */
4642 if (! S_IS_EXTERNAL (sym)
4643 && ! S_IS_WEAK (sym)
4644 && S_IS_DEFINED (sym))
4645 {
4646 sym->ecoff_symbol->ecoff_sym.asym.value = 0;
4647 sym->ecoff_symbol->ecoff_sym.asym.st = (int) st_Nil;
4648 sym->ecoff_symbol->ecoff_sym.asym.sc = (int) sc_Nil;
4649 sym->ecoff_symbol->ecoff_sym.asym.index = indexNil;
4650 }
4651
4652 obj_ecoff_set_ext (sym, &sym->ecoff_symbol->ecoff_sym);
4653 }
4654 }
4655
4656 /* Build the ECOFF debugging information. */
4657
4658 unsigned long
4659 ecoff_build_debug (hdr, bufp, backend)
4660 HDRR *hdr;
4661 char **bufp;
4662 const struct ecoff_debug_swap *backend;
4663 {
4664 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4665 tag_t *ptag;
4666 tag_t *ptag_next;
4667 efdr_t *fil_ptr;
4668 int end_warning;
4669 efdr_t *hold_file_ptr;
4670 proc_t * hold_proc_ptr;
4671 symbolS *sym;
4672 char *buf;
4673 char *bufend;
4674 unsigned long offset;
4675
4676 /* Make sure we have a file. */
4677 if (first_file == (efdr_t *) NULL)
4678 add_file ((const char *) NULL, 0, 1);
4679
4680 /* Handle any top level tags. */
4681 for (ptag = top_tag_head->first_tag;
4682 ptag != (tag_t *) NULL;
4683 ptag = ptag_next)
4684 {
4685 if (ptag->forward_ref != (forward_t *) NULL)
4686 add_unknown_tag (ptag);
4687
4688 ptag_next = ptag->same_block;
4689 ptag->hash_ptr->tag_ptr = ptag->same_name;
4690 free_tag (ptag);
4691 }
4692
4693 free_thead (top_tag_head);
4694
4695 /* Look through the symbols. Add debugging information for each
4696 symbol that has not already received it. */
4697 hold_file_ptr = cur_file_ptr;
4698 hold_proc_ptr = cur_proc_ptr;
4699 cur_proc_ptr = (proc_t *) NULL;
4700 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4701 {
4702 if (sym->ecoff_symbol != NULL
4703 || sym->ecoff_file == (efdr_t *) NULL
4704 || (sym->bsym->flags & BSF_SECTION_SYM) != 0)
4705 continue;
4706
4707 cur_file_ptr = sym->ecoff_file;
4708 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym,
4709 (bfd_vma) 0, S_GET_VALUE (sym), indexNil);
4710 }
4711 cur_proc_ptr = hold_proc_ptr;
4712 cur_file_ptr = hold_file_ptr;
4713
4714 /* Output an ending symbol for all the files. We have to do this
4715 here for the last file, so we may as well do it for all of the
4716 files. */
4717 end_warning = 0;
4718 for (fil_ptr = first_file;
4719 fil_ptr != (efdr_t *) NULL;
4720 fil_ptr = fil_ptr->next_file)
4721 {
4722 cur_file_ptr = fil_ptr;
4723 while (cur_file_ptr->cur_scope != (scope_t *) NULL
4724 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL)
4725 {
4726 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev;
4727 if (! end_warning && ! cur_file_ptr->fake)
4728 {
4729 as_warn ("Missing .end or .bend at end of file");
4730 end_warning = 1;
4731 }
4732 }
4733 if (cur_file_ptr->cur_scope != (scope_t *) NULL)
4734 (void) add_ecoff_symbol ((const char *) NULL,
4735 st_End, sc_Text,
4736 (symbolS *) NULL,
4737 (bfd_vma) 0,
4738 (symint_t) 0,
4739 (symint_t) 0);
4740 }
4741
4742 /* Build the symbolic information. */
4743 offset = 0;
4744 buf = xmalloc (PAGE_SIZE);
4745 bufend = buf + PAGE_SIZE;
4746
4747 /* Build the line number information. */
4748 hdr->cbLineOffset = offset;
4749 offset = ecoff_build_lineno (backend, &buf, &bufend, offset,
4750 &hdr->ilineMax);
4751 hdr->cbLine = offset - hdr->cbLineOffset;
4752
4753 /* We don't use dense numbers at all. */
4754 hdr->idnMax = 0;
4755 hdr->cbDnOffset = 0;
4756
4757 /* We can't build the PDR table until we have built the symbols,
4758 because a PDR contains a symbol index. However, we set aside
4759 space at this point. */
4760 hdr->ipdMax = proc_cnt;
4761 hdr->cbPdOffset = offset;
4762 if (bufend - (buf + offset) < proc_cnt * external_pdr_size)
4763 (void) ecoff_add_bytes (&buf, &bufend, buf + offset,
4764 proc_cnt * external_pdr_size);
4765 offset += proc_cnt * external_pdr_size;
4766
4767 /* Build the local symbols. */
4768 hdr->cbSymOffset = offset;
4769 offset = ecoff_build_symbols (backend, &buf, &bufend, offset);
4770 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size;
4771
4772 /* Building the symbols initializes the symbol index in the PDR's.
4773 Now we can swap out the PDR's. */
4774 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset);
4775
4776 /* We don't use optimization symbols. */
4777 hdr->ioptMax = 0;
4778 hdr->cbOptOffset = 0;
4779
4780 /* Swap out the auxiliary type information. */
4781 hdr->cbAuxOffset = offset;
4782 offset = ecoff_build_aux (backend, &buf, &bufend, offset);
4783 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext);
4784
4785 /* Copy out the local strings. */
4786 hdr->cbSsOffset = offset;
4787 offset = ecoff_build_ss (backend, &buf, &bufend, offset);
4788 hdr->issMax = offset - hdr->cbSsOffset;
4789
4790 /* We don't use relative file descriptors. */
4791 hdr->crfd = 0;
4792 hdr->cbRfdOffset = 0;
4793
4794 /* Swap out the file descriptors. */
4795 hdr->cbFdOffset = offset;
4796 offset = ecoff_build_fdr (backend, &buf, &bufend, offset);
4797 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size;
4798
4799 /* Set up the external symbols, which are handled by the BFD back
4800 end. */
4801 hdr->issExtMax = 0;
4802 hdr->cbSsExtOffset = 0;
4803 hdr->iextMax = 0;
4804 hdr->cbExtOffset = 0;
4805 ecoff_setup_ext ();
4806
4807 know ((offset & (backend->debug_align - 1)) == 0);
4808
4809 /* FIXME: This value should be determined from the .verstamp directive,
4810 with reasonable defaults in config files. */
4811 #ifdef TC_ALPHA
4812 hdr->vstamp = 0x030b;
4813 #else
4814 hdr->vstamp = 0x020b;
4815 #endif
4816
4817 *bufp = buf;
4818 return offset;
4819 }
4820 \f
4821 /* Allocate a cluster of pages. */
4822
4823 #ifndef MALLOC_CHECK
4824
4825 static page_type *
4826 allocate_cluster (npages)
4827 unsigned long npages;
4828 {
4829 register page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE);
4830
4831 #ifdef ECOFF_DEBUG
4832 if (debug > 3)
4833 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value);
4834 #endif
4835
4836 memset (value, 0, npages * PAGE_USIZE);
4837
4838 return value;
4839 }
4840
4841
4842 static page_type *cluster_ptr = NULL;
4843 static unsigned long pages_left = 0;
4844
4845 #endif /* MALLOC_CHECK */
4846
4847 /* Allocate one page (which is initialized to 0). */
4848
4849 static page_type *
4850 allocate_page ()
4851 {
4852 #ifndef MALLOC_CHECK
4853
4854 if (pages_left == 0)
4855 {
4856 pages_left = MAX_CLUSTER_PAGES;
4857 cluster_ptr = allocate_cluster (pages_left);
4858 }
4859
4860 pages_left--;
4861 return cluster_ptr++;
4862
4863 #else /* MALLOC_CHECK */
4864
4865 page_type *ptr;
4866
4867 ptr = xmalloc (PAGE_USIZE);
4868 memset (ptr, 0, PAGE_USIZE);
4869 return ptr;
4870
4871 #endif /* MALLOC_CHECK */
4872 }
4873 \f
4874 /* Allocate scoping information. */
4875
4876 static scope_t *
4877 allocate_scope ()
4878 {
4879 register scope_t *ptr;
4880 static scope_t initial_scope;
4881
4882 #ifndef MALLOC_CHECK
4883
4884 ptr = alloc_counts[(int)alloc_type_scope].free_list.f_scope;
4885 if (ptr != (scope_t *) NULL)
4886 alloc_counts[ (int)alloc_type_scope ].free_list.f_scope = ptr->free;
4887 else
4888 {
4889 register int unallocated = alloc_counts[(int)alloc_type_scope].unallocated;
4890 register page_type *cur_page = alloc_counts[(int)alloc_type_scope].cur_page;
4891
4892 if (unallocated == 0)
4893 {
4894 unallocated = PAGE_SIZE / sizeof (scope_t);
4895 alloc_counts[(int)alloc_type_scope].cur_page = cur_page = allocate_page ();
4896 alloc_counts[(int)alloc_type_scope].total_pages++;
4897 }
4898
4899 ptr = &cur_page->scope[--unallocated];
4900 alloc_counts[(int)alloc_type_scope].unallocated = unallocated;
4901 }
4902
4903 #else
4904
4905 ptr = (scope_t *) xmalloc (sizeof (scope_t));
4906
4907 #endif
4908
4909 alloc_counts[(int)alloc_type_scope].total_alloc++;
4910 *ptr = initial_scope;
4911 return ptr;
4912 }
4913
4914 /* Free scoping information. */
4915
4916 static void
4917 free_scope (ptr)
4918 scope_t *ptr;
4919 {
4920 alloc_counts[(int)alloc_type_scope].total_free++;
4921
4922 #ifndef MALLOC_CHECK
4923 ptr->free = alloc_counts[(int)alloc_type_scope].free_list.f_scope;
4924 alloc_counts[(int)alloc_type_scope].free_list.f_scope = ptr;
4925 #else
4926 free ((PTR) ptr);
4927 #endif
4928 }
4929 \f
4930 /* Allocate links for pages in a virtual array. */
4931
4932 static vlinks_t *
4933 allocate_vlinks ()
4934 {
4935 register vlinks_t *ptr;
4936 static vlinks_t initial_vlinks;
4937
4938 #ifndef MALLOC_CHECK
4939
4940 register int unallocated = alloc_counts[(int)alloc_type_vlinks].unallocated;
4941 register page_type *cur_page = alloc_counts[(int)alloc_type_vlinks].cur_page;
4942
4943 if (unallocated == 0)
4944 {
4945 unallocated = PAGE_SIZE / sizeof (vlinks_t);
4946 alloc_counts[(int)alloc_type_vlinks].cur_page = cur_page = allocate_page ();
4947 alloc_counts[(int)alloc_type_vlinks].total_pages++;
4948 }
4949
4950 ptr = &cur_page->vlinks[--unallocated];
4951 alloc_counts[(int)alloc_type_vlinks].unallocated = unallocated;
4952
4953 #else
4954
4955 ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t));
4956
4957 #endif
4958
4959 alloc_counts[(int)alloc_type_vlinks].total_alloc++;
4960 *ptr = initial_vlinks;
4961 return ptr;
4962 }
4963 \f
4964 /* Allocate string hash buckets. */
4965
4966 static shash_t *
4967 allocate_shash ()
4968 {
4969 register shash_t *ptr;
4970 static shash_t initial_shash;
4971
4972 #ifndef MALLOC_CHECK
4973
4974 register int unallocated = alloc_counts[(int)alloc_type_shash].unallocated;
4975 register page_type *cur_page = alloc_counts[(int)alloc_type_shash].cur_page;
4976
4977 if (unallocated == 0)
4978 {
4979 unallocated = PAGE_SIZE / sizeof (shash_t);
4980 alloc_counts[(int)alloc_type_shash].cur_page = cur_page = allocate_page ();
4981 alloc_counts[(int)alloc_type_shash].total_pages++;
4982 }
4983
4984 ptr = &cur_page->shash[--unallocated];
4985 alloc_counts[(int)alloc_type_shash].unallocated = unallocated;
4986
4987 #else
4988
4989 ptr = (shash_t *) xmalloc (sizeof (shash_t));
4990
4991 #endif
4992
4993 alloc_counts[(int)alloc_type_shash].total_alloc++;
4994 *ptr = initial_shash;
4995 return ptr;
4996 }
4997 \f
4998 /* Allocate type hash buckets. */
4999
5000 static thash_t *
5001 allocate_thash ()
5002 {
5003 register thash_t *ptr;
5004 static thash_t initial_thash;
5005
5006 #ifndef MALLOC_CHECK
5007
5008 register int unallocated = alloc_counts[(int)alloc_type_thash].unallocated;
5009 register page_type *cur_page = alloc_counts[(int)alloc_type_thash].cur_page;
5010
5011 if (unallocated == 0)
5012 {
5013 unallocated = PAGE_SIZE / sizeof (thash_t);
5014 alloc_counts[(int)alloc_type_thash].cur_page = cur_page = allocate_page ();
5015 alloc_counts[(int)alloc_type_thash].total_pages++;
5016 }
5017
5018 ptr = &cur_page->thash[--unallocated];
5019 alloc_counts[(int)alloc_type_thash].unallocated = unallocated;
5020
5021 #else
5022
5023 ptr = (thash_t *) xmalloc (sizeof (thash_t));
5024
5025 #endif
5026
5027 alloc_counts[(int)alloc_type_thash].total_alloc++;
5028 *ptr = initial_thash;
5029 return ptr;
5030 }
5031 \f
5032 /* Allocate structure, union, or enum tag information. */
5033
5034 static tag_t *
5035 allocate_tag ()
5036 {
5037 register tag_t *ptr;
5038 static tag_t initial_tag;
5039
5040 #ifndef MALLOC_CHECK
5041
5042 ptr = alloc_counts[(int)alloc_type_tag].free_list.f_tag;
5043 if (ptr != (tag_t *) NULL)
5044 alloc_counts[(int)alloc_type_tag].free_list.f_tag = ptr->free;
5045 else
5046 {
5047 register int unallocated = alloc_counts[(int)alloc_type_tag].unallocated;
5048 register page_type *cur_page = alloc_counts[(int)alloc_type_tag].cur_page;
5049
5050 if (unallocated == 0)
5051 {
5052 unallocated = PAGE_SIZE / sizeof (tag_t);
5053 alloc_counts[(int)alloc_type_tag].cur_page = cur_page = allocate_page ();
5054 alloc_counts[(int)alloc_type_tag].total_pages++;
5055 }
5056
5057 ptr = &cur_page->tag[--unallocated];
5058 alloc_counts[(int)alloc_type_tag].unallocated = unallocated;
5059 }
5060
5061 #else
5062
5063 ptr = (tag_t *) xmalloc (sizeof (tag_t));
5064
5065 #endif
5066
5067 alloc_counts[(int)alloc_type_tag].total_alloc++;
5068 *ptr = initial_tag;
5069 return ptr;
5070 }
5071
5072 /* Free scoping information. */
5073
5074 static void
5075 free_tag (ptr)
5076 tag_t *ptr;
5077 {
5078 alloc_counts[(int)alloc_type_tag].total_free++;
5079
5080 #ifndef MALLOC_CHECK
5081 ptr->free = alloc_counts[(int)alloc_type_tag].free_list.f_tag;
5082 alloc_counts[(int)alloc_type_tag].free_list.f_tag = ptr;
5083 #else
5084 free ((PTR_T) ptr);
5085 #endif
5086 }
5087 \f
5088 /* Allocate forward reference to a yet unknown tag. */
5089
5090 static forward_t *
5091 allocate_forward ()
5092 {
5093 register forward_t *ptr;
5094 static forward_t initial_forward;
5095
5096 #ifndef MALLOC_CHECK
5097
5098 register int unallocated = alloc_counts[(int)alloc_type_forward].unallocated;
5099 register page_type *cur_page = alloc_counts[(int)alloc_type_forward].cur_page;
5100
5101 if (unallocated == 0)
5102 {
5103 unallocated = PAGE_SIZE / sizeof (forward_t);
5104 alloc_counts[(int)alloc_type_forward].cur_page = cur_page = allocate_page ();
5105 alloc_counts[(int)alloc_type_forward].total_pages++;
5106 }
5107
5108 ptr = &cur_page->forward[--unallocated];
5109 alloc_counts[(int)alloc_type_forward].unallocated = unallocated;
5110
5111 #else
5112
5113 ptr = (forward_t *) xmalloc (sizeof (forward_t));
5114
5115 #endif
5116
5117 alloc_counts[(int)alloc_type_forward].total_alloc++;
5118 *ptr = initial_forward;
5119 return ptr;
5120 }
5121 \f
5122 /* Allocate head of type hash list. */
5123
5124 static thead_t *
5125 allocate_thead ()
5126 {
5127 register thead_t *ptr;
5128 static thead_t initial_thead;
5129
5130 #ifndef MALLOC_CHECK
5131
5132 ptr = alloc_counts[(int)alloc_type_thead].free_list.f_thead;
5133 if (ptr != (thead_t *) NULL)
5134 alloc_counts[ (int)alloc_type_thead ].free_list.f_thead = ptr->free;
5135 else
5136 {
5137 register int unallocated = alloc_counts[(int)alloc_type_thead].unallocated;
5138 register page_type *cur_page = alloc_counts[(int)alloc_type_thead].cur_page;
5139
5140 if (unallocated == 0)
5141 {
5142 unallocated = PAGE_SIZE / sizeof (thead_t);
5143 alloc_counts[(int)alloc_type_thead].cur_page = cur_page = allocate_page ();
5144 alloc_counts[(int)alloc_type_thead].total_pages++;
5145 }
5146
5147 ptr = &cur_page->thead[--unallocated];
5148 alloc_counts[(int)alloc_type_thead].unallocated = unallocated;
5149 }
5150
5151 #else
5152
5153 ptr = (thead_t *) xmalloc (sizeof (thead_t));
5154
5155 #endif
5156
5157 alloc_counts[(int)alloc_type_thead].total_alloc++;
5158 *ptr = initial_thead;
5159 return ptr;
5160 }
5161
5162 /* Free scoping information. */
5163
5164 static void
5165 free_thead (ptr)
5166 thead_t *ptr;
5167 {
5168 alloc_counts[(int)alloc_type_thead].total_free++;
5169
5170 #ifndef MALLOC_CHECK
5171 ptr->free = (thead_t *) alloc_counts[(int)alloc_type_thead].free_list.f_thead;
5172 alloc_counts[(int)alloc_type_thead].free_list.f_thead = ptr;
5173 #else
5174 free ((PTR_T) ptr);
5175 #endif
5176 }
5177 \f
5178 static lineno_list_t *
5179 allocate_lineno_list ()
5180 {
5181 register lineno_list_t *ptr;
5182 static lineno_list_t initial_lineno_list;
5183
5184 #ifndef MALLOC_CHECK
5185
5186 register int unallocated = alloc_counts[(int)alloc_type_lineno].unallocated;
5187 register page_type *cur_page = alloc_counts[(int)alloc_type_lineno].cur_page;
5188
5189 if (unallocated == 0)
5190 {
5191 unallocated = PAGE_SIZE / sizeof (lineno_list_t);
5192 alloc_counts[(int)alloc_type_lineno].cur_page = cur_page = allocate_page ();
5193 alloc_counts[(int)alloc_type_lineno].total_pages++;
5194 }
5195
5196 ptr = &cur_page->lineno[--unallocated];
5197 alloc_counts[(int)alloc_type_lineno].unallocated = unallocated;
5198
5199 #else
5200
5201 ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t));
5202
5203 #endif
5204
5205 alloc_counts[(int)alloc_type_lineno].total_alloc++;
5206 *ptr = initial_lineno_list;
5207 return ptr;
5208 }
5209
5210 void
5211 ecoff_set_gp_prolog_size (sz)
5212 int sz;
5213 {
5214 if (cur_proc_ptr == 0)
5215 return;
5216
5217 cur_proc_ptr->pdr.gp_prologue = sz;
5218 if (cur_proc_ptr->pdr.gp_prologue != sz)
5219 {
5220 as_warn ("GP prologue size exceeds field size, using 0 instead");
5221 cur_proc_ptr->pdr.gp_prologue = 0;
5222 }
5223
5224 cur_proc_ptr->pdr.gp_used = 1;
5225 }
5226
5227 static void
5228 generate_ecoff_stab (what, string, type, other, desc)
5229 int what;
5230 const char *string;
5231 int type;
5232 int other;
5233 int desc;
5234 {
5235 efdr_t *save_file_ptr = cur_file_ptr;
5236 symbolS *sym;
5237 symint_t value;
5238 st_t st;
5239 sc_t sc;
5240 symint_t indx;
5241 localsym_t *hold = NULL;
5242
5243 /* We don't handle .stabd. */
5244 if (what != 's' && what != 'n')
5245 {
5246 as_bad (".stab%c is not supported", what);
5247 return;
5248 }
5249
5250 /* We ignore the other field. */
5251 if (other != 0)
5252 as_warn (".stab%c: ignoring non-zero other field", what);
5253
5254 /* Make sure we have a current file. */
5255 if (cur_file_ptr == (efdr_t *) NULL)
5256 {
5257 add_file ((const char *) NULL, 0, 1);
5258 save_file_ptr = cur_file_ptr;
5259 }
5260
5261 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
5262 signal to gdb. */
5263 if (stabs_seen == 0)
5264 mark_stabs (0);
5265
5266 /* Line number stabs are handled differently, since they have two
5267 values, the line number and the address of the label. We use the
5268 index field (aka desc) to hold the line number, and the value
5269 field to hold the address. The symbol type is st_Label, which
5270 should be different from the other stabs, so that gdb can
5271 recognize it. */
5272 if (type == N_SLINE)
5273 {
5274 SYMR dummy_symr;
5275
5276 #ifndef NO_LISTING
5277 if (listing)
5278 listing_source_line ((unsigned int) desc);
5279 #endif
5280
5281 dummy_symr.index = desc;
5282 if (dummy_symr.index != desc)
5283 {
5284 as_warn ("Line number (%d) for .stab%c directive cannot fit in index field (20 bits)",
5285 desc, what);
5286 return;
5287 }
5288
5289 sym = symbol_find_or_make ((char *)string);
5290 value = 0;
5291 st = st_Label;
5292 sc = sc_Text;
5293 indx = desc;
5294 }
5295 else
5296 {
5297 #ifndef NO_LISTING
5298 if (listing && (type == N_SO || type == N_SOL))
5299 listing_source_file (string);
5300 #endif
5301
5302 sym = symbol_find_or_make ((char *)string);
5303 sc = sc_Nil;
5304 st = st_Nil;
5305 value = 0;
5306 indx = ECOFF_MARK_STAB (type);
5307 }
5308
5309 /* Don't store the stabs symbol we are creating as the type of the
5310 ECOFF symbol. We want to compute the type of the ECOFF symbol
5311 independently. */
5312 if (sym != (symbolS *) NULL)
5313 hold = sym->ecoff_symbol;
5314
5315 (void) add_ecoff_symbol (string, st, sc, sym, (bfd_vma) 0, value, indx);
5316
5317 if (sym != (symbolS *) NULL)
5318 sym->ecoff_symbol = hold;
5319
5320 /* Restore normal file type. */
5321 cur_file_ptr = save_file_ptr;
5322 }
5323
5324 int
5325 ecoff_no_current_file ()
5326 {
5327 return cur_file_ptr == (efdr_t *) NULL;
5328 }
5329
5330 void
5331 ecoff_generate_asm_lineno (filename, lineno)
5332 const char *filename;
5333 int lineno;
5334 {
5335 lineno_list_t *list;
5336
5337 if (current_stabs_filename == (char *)NULL
5338 || strcmp (current_stabs_filename, filename))
5339 add_file (filename, 0, 1);
5340
5341 list = allocate_lineno_list ();
5342
5343 list->next = (lineno_list_t *) NULL;
5344 list->file = cur_file_ptr;
5345 list->proc = cur_proc_ptr;
5346 list->frag = frag_now;
5347 list->paddr = frag_now_fix ();
5348 list->lineno = lineno;
5349
5350 /* We don't want to merge files which have line numbers. */
5351 cur_file_ptr->fdr.fMerge = 0;
5352
5353 /* A .loc directive will sometimes appear before a .ent directive,
5354 which means that cur_proc_ptr will be NULL here. Arrange to
5355 patch this up. */
5356 if (cur_proc_ptr == (proc_t *) NULL)
5357 {
5358 lineno_list_t **pl;
5359
5360 pl = &noproc_lineno;
5361 while (*pl != (lineno_list_t *) NULL)
5362 pl = &(*pl)->next;
5363 *pl = list;
5364 }
5365 else
5366 {
5367 last_lineno = list;
5368 *last_lineno_ptr = list;
5369 last_lineno_ptr = &list->next;
5370 }
5371 }
5372
5373 #endif /* ECOFF_DEBUGGING */
GDB Binutils - Deliverables
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