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2005-05-20 Paolo Bonzini <bonzini@gnu.org>
[binutils.git] / gas / ecoff.c
blob45116e86db0d35f5ce5e14b1cb1fde58e4f52ba5
1 /* ECOFF debugging support.
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003, 2004, 2005
4 Free Software Foundation, Inc.
5 Contributed by Cygnus Support.
6 This file was put together by Ian Lance Taylor <ian@cygnus.com>. A
7 good deal of it comes directly from mips-tfile.c, by Michael
8 Meissner <meissner@osf.org>.
9
10 This file is part of GAS.
11
12 GAS is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2, or (at your option)
15 any later version.
16
17 GAS is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with GAS; see the file COPYING. If not, write to the Free
24 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
25 02110-1301, USA. */
26
27 #include "as.h"
28
29 /* This file is compiled conditionally for those targets which use
30 ECOFF debugging information (e.g., MIPS ECOFF, MIPS ELF, Alpha
31 ECOFF). */
32
33 #include "ecoff.h"
34
35 #ifdef ECOFF_DEBUGGING
36
37 #include "coff/internal.h"
38 #include "coff/symconst.h"
39 #include "aout/stab_gnu.h"
40
41 #include "safe-ctype.h"
42
43 /* Why isn't this in coff/sym.h? */
44 #define ST_RFDESCAPE 0xfff
45
46 /* This file constructs the information used by the ECOFF debugging
47 format. It just builds a large block of data.
48
49 We support both ECOFF style debugging and stabs debugging (the
50 stabs symbols are encapsulated in ECOFF symbols). This should let
51 us handle anything the compiler might throw at us. */
52
53 /* Here is a brief description of the MIPS ECOFF symbol table, by
54 Michael Meissner. The MIPS symbol table has the following pieces:
55
56 Symbolic Header
57 |
58 +-- Auxiliary Symbols
59 |
60 +-- Dense number table
61 |
62 +-- Optimizer Symbols
63 |
64 +-- External Strings
65 |
66 +-- External Symbols
67 |
68 +-- Relative file descriptors
69 |
70 +-- File table
71 |
72 +-- Procedure table
73 |
74 +-- Line number table
75 |
76 +-- Local Strings
77 |
78 +-- Local Symbols
79
80 The symbolic header points to each of the other tables, and also
81 contains the number of entries. It also contains a magic number
82 and MIPS compiler version number, such as 2.0.
83
84 The auxiliary table is a series of 32 bit integers, that are
85 referenced as needed from the local symbol table. Unlike standard
86 COFF, the aux. information does not follow the symbol that uses
87 it, but rather is a separate table. In theory, this would allow
88 the MIPS compilers to collapse duplicate aux. entries, but I've not
89 noticed this happening with the 1.31 compiler suite. The different
90 types of aux. entries are:
91
92 1) dnLow: Low bound on array dimension.
93
94 2) dnHigh: High bound on array dimension.
95
96 3) isym: Index to the local symbol which is the start of the
97 function for the end of function first aux. entry.
98
99 4) width: Width of structures and bitfields.
100
101 5) count: Count of ranges for variant part.
102
103 6) rndx: A relative index into the symbol table. The relative
104 index field has two parts: rfd which is a pointer into the
105 relative file index table or ST_RFDESCAPE which says the next
106 aux. entry is the file number, and index: which is the pointer
107 into the local symbol within a given file table. This is for
108 things like references to types defined in another file.
109
110 7) Type information: This is like the COFF type bits, except it
111 is 32 bits instead of 16; they still have room to add new
112 basic types; and they can handle more than 6 levels of array,
113 pointer, function, etc. Each type information field contains
114 the following structure members:
115
116 a) fBitfield: a bit that says this is a bitfield, and the
117 size in bits follows as the next aux. entry.
118
119 b) continued: a bit that says the next aux. entry is a
120 continuation of the current type information (in case
121 there are more than 6 levels of array/ptr/function).
122
123 c) bt: an integer containing the base type before adding
124 array, pointer, function, etc. qualifiers. The
125 current base types that I have documentation for are:
126
127 btNil -- undefined
128 btAdr -- address - integer same size as ptr
129 btChar -- character
130 btUChar -- unsigned character
131 btShort -- short
132 btUShort -- unsigned short
133 btInt -- int
134 btUInt -- unsigned int
135 btLong -- long
136 btULong -- unsigned long
137 btFloat -- float (real)
138 btDouble -- Double (real)
139 btStruct -- Structure (Record)
140 btUnion -- Union (variant)
141 btEnum -- Enumerated
142 btTypedef -- defined via a typedef isymRef
143 btRange -- subrange of int
144 btSet -- pascal sets
145 btComplex -- fortran complex
146 btDComplex -- fortran double complex
147 btIndirect -- forward or unnamed typedef
148 btFixedDec -- Fixed Decimal
149 btFloatDec -- Float Decimal
150 btString -- Varying Length Character String
151 btBit -- Aligned Bit String
152 btPicture -- Picture
153 btVoid -- Void (MIPS cc revision >= 2.00)
154
155 d) tq0 - tq5: type qualifier fields as needed. The
156 current type qualifier fields I have documentation for
157 are:
158
159 tqNil -- no more qualifiers
160 tqPtr -- pointer
161 tqProc -- procedure
162 tqArray -- array
163 tqFar -- 8086 far pointers
164 tqVol -- volatile
165
166 The dense number table is used in the front ends, and disappears by
167 the time the .o is created.
168
169 With the 1.31 compiler suite, the optimization symbols don't seem
170 to be used as far as I can tell.
171
172 The linker is the first entity that creates the relative file
173 descriptor table, and I believe it is used so that the individual
174 file table pointers don't have to be rewritten when the objects are
175 merged together into the program file.
176
177 Unlike COFF, the basic symbol & string tables are split into
178 external and local symbols/strings. The relocation information
179 only goes off of the external symbol table, and the debug
180 information only goes off of the internal symbol table. The
181 external symbols can have links to an appropriate file index and
182 symbol within the file to give it the appropriate type information.
183 Because of this, the external symbols are actually larger than the
184 internal symbols (to contain the link information), and contain the
185 local symbol structure as a member, though this member is not the
186 first member of the external symbol structure (!). I suspect this
187 split is to make strip easier to deal with.
188
189 Each file table has offsets for where the line numbers, local
190 strings, local symbols, and procedure table starts from within the
191 global tables, and the indexs are reset to 0 for each of those
192 tables for the file.
193
194 The procedure table contains the binary equivalents of the .ent
195 (start of the function address), .frame (what register is the
196 virtual frame pointer, constant offset from the register to obtain
197 the VFP, and what register holds the return address), .mask/.fmask
198 (bitmask of saved registers, and where the first register is stored
199 relative to the VFP) assembler directives. It also contains the
200 low and high bounds of the line numbers if debugging is turned on.
201
202 The line number table is a compressed form of the normal COFF line
203 table. Each line number entry is either 1 or 3 bytes long, and
204 contains a signed delta from the previous line, and an unsigned
205 count of the number of instructions this statement takes.
206
207 The local symbol table contains the following fields:
208
209 1) iss: index to the local string table giving the name of the
210 symbol.
211
212 2) value: value of the symbol (address, register number, etc.).
213
214 3) st: symbol type. The current symbol types are:
215
216 stNil -- Nuthin' special
217 stGlobal -- external symbol
218 stStatic -- static
219 stParam -- procedure argument
220 stLocal -- local variable
221 stLabel -- label
222 stProc -- External Procedure
223 stBlock -- beginning of block
224 stEnd -- end (of anything)
225 stMember -- member (of anything)
226 stTypedef -- type definition
227 stFile -- file name
228 stRegReloc -- register relocation
229 stForward -- forwarding address
230 stStaticProc -- Static procedure
231 stConstant -- const
232
233 4) sc: storage class. The current storage classes are:
234
235 scText -- text symbol
236 scData -- initialized data symbol
237 scBss -- un-initialized data symbol
238 scRegister -- value of symbol is register number
239 scAbs -- value of symbol is absolute
240 scUndefined -- who knows?
241 scCdbLocal -- variable's value is IN se->va.??
242 scBits -- this is a bit field
243 scCdbSystem -- value is IN debugger's address space
244 scRegImage -- register value saved on stack
245 scInfo -- symbol contains debugger information
246 scUserStruct -- addr in struct user for current process
247 scSData -- load time only small data
248 scSBss -- load time only small common
249 scRData -- load time only read only data
250 scVar -- Var parameter (fortranpascal)
251 scCommon -- common variable
252 scSCommon -- small common
253 scVarRegister -- Var parameter in a register
254 scVariant -- Variant record
255 scSUndefined -- small undefined(external) data
256 scInit -- .init section symbol
257
258 5) index: pointer to a local symbol or aux. entry.
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 /* FIXME: Yes, there can be such strings while emitting C++ class debug
772 info. Templates are the offender here, the test case in question
773 having a mangled class name of
774
775 t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\
776 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey
777
778 Repeat that a couple dozen times while listing the class members and
779 you've got strings over 4k. Hack around this for now by increasing
780 the page size. A proper solution would abandon this structure scheme
781 certainly for very large strings, and possibly entirely. */
782
783 #ifndef PAGE_SIZE
784 #define PAGE_SIZE (8*1024) /* size of varray pages */
785 #endif
786
787 #define PAGE_USIZE ((unsigned long) PAGE_SIZE)
788
789 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */
790 #define MAX_CLUSTER_PAGES 63
791 #endif
792
793 /* Linked list connecting separate page allocations. */
794 typedef struct vlinks {
795 struct vlinks *prev; /* previous set of pages */
796 struct vlinks *next; /* next set of pages */
797 union page *datum; /* start of page */
798 unsigned long start_index; /* starting index # of page */
799 } vlinks_t;
800
801 /* Virtual array header. */
802 typedef struct varray {
803 vlinks_t *first; /* first page link */
804 vlinks_t *last; /* last page link */
805 unsigned long num_allocated; /* # objects allocated */
806 unsigned short object_size; /* size in bytes of each object */
807 unsigned short objects_per_page; /* # objects that can fit on a page */
808 unsigned short objects_last_page; /* # objects allocated on last page */
809 } varray_t;
810
811 #ifndef MALLOC_CHECK
812 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type))
813 #else
814 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE)
815 #endif
816
817 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \
818 (vlinks_t *)0, /* first */ \
819 (vlinks_t *)0, /* last */ \
820 0, /* num_allocated */ \
821 sizeof (type), /* object_size */ \
822 OBJECTS_PER_PAGE (type), /* objects_per_page */ \
823 OBJECTS_PER_PAGE (type), /* objects_last_page */ \
824 }
825
826 /* Master type for indexes within the symbol table. */
827 typedef unsigned long symint_t;
828
829 /* Linked list support for nested scopes (file, block, structure, etc.). */
830 typedef struct scope {
831 struct scope *prev; /* previous scope level */
832 struct scope *free; /* free list pointer */
833 struct localsym *lsym; /* pointer to local symbol node */
834 st_t type; /* type of the node */
835 } scope_t;
836
837 /* For a local symbol we store a gas symbol as well as the debugging
838 information we generate. The gas symbol will be NULL if this is
839 only a debugging symbol. */
840 typedef struct localsym {
841 const char *name; /* symbol name */
842 symbolS *as_sym; /* symbol as seen by gas */
843 bfd_vma addend; /* addend to as_sym value */
844 struct efdr *file_ptr; /* file pointer */
845 struct ecoff_proc *proc_ptr; /* proc pointer */
846 struct localsym *begin_ptr; /* symbol at start of block */
847 struct ecoff_aux *index_ptr; /* index value to be filled in */
848 struct forward *forward_ref; /* forward references to this symbol */
849 long sym_index; /* final symbol index */
850 EXTR ecoff_sym; /* ECOFF debugging symbol */
851 } localsym_t;
852
853 /* For aux information we keep the type and the data. */
854 typedef struct ecoff_aux {
855 enum aux_type type; /* aux type */
856 AUXU data; /* aux data */
857 } aux_t;
858
859 /* For a procedure we store the gas symbol as well as the PDR
860 debugging information. */
861 typedef struct ecoff_proc {
862 localsym_t *sym; /* associated symbol */
863 PDR pdr; /* ECOFF debugging info */
864 } proc_t;
865
866 /* Number of proc_t structures allocated. */
867 static unsigned long proc_cnt;
868
869 /* Forward reference list for tags referenced, but not yet defined. */
870 typedef struct forward {
871 struct forward *next; /* next forward reference */
872 struct forward *free; /* free list pointer */
873 aux_t *ifd_ptr; /* pointer to store file index */
874 aux_t *index_ptr; /* pointer to store symbol index */
875 } forward_t;
876
877 /* Linked list support for tags. The first tag in the list is always
878 the current tag for that block. */
879 typedef struct tag {
880 struct tag *free; /* free list pointer */
881 struct shash *hash_ptr; /* pointer to the hash table head */
882 struct tag *same_name; /* tag with same name in outer scope */
883 struct tag *same_block; /* next tag defined in the same block. */
884 struct forward *forward_ref; /* list of forward references */
885 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
886 symint_t ifd; /* file # tag defined in */
887 localsym_t *sym; /* file's local symbols */
888 } tag_t;
889
890 /* Head of a block's linked list of tags. */
891 typedef struct thead {
892 struct thead *prev; /* previous block */
893 struct thead *free; /* free list pointer */
894 struct tag *first_tag; /* first tag in block defined */
895 } thead_t;
896
897 /* Union containing pointers to each the small structures which are freed up. */
898 typedef union small_free {
899 scope_t *f_scope; /* scope structure */
900 thead_t *f_thead; /* tag head structure */
901 tag_t *f_tag; /* tag element structure */
902 forward_t *f_forward; /* forward tag reference */
903 } small_free_t;
904
905 /* String hash table entry. */
906
907 typedef struct shash {
908 char *string; /* string we are hashing */
909 symint_t indx; /* index within string table */
910 EXTR *esym_ptr; /* global symbol pointer */
911 localsym_t *sym_ptr; /* local symbol pointer */
912 localsym_t *end_ptr; /* symbol pointer to end block */
913 tag_t *tag_ptr; /* tag pointer */
914 proc_t *proc_ptr; /* procedure descriptor pointer */
915 } shash_t;
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 /* Extended file descriptor that contains all of the support necessary
935 to add things to each file separately. */
936 typedef struct efdr {
937 FDR fdr; /* File header to be written out */
938 FDR *orig_fdr; /* original file header */
939 char *name; /* filename */
940 int fake; /* whether this is faked .file */
941 symint_t void_type; /* aux. pointer to 'void' type */
942 symint_t int_type; /* aux. pointer to 'int' type */
943 scope_t *cur_scope; /* current nested scopes */
944 symint_t file_index; /* current file number */
945 int nested_scopes; /* # nested scopes */
946 varray_t strings; /* local strings */
947 varray_t symbols; /* local symbols */
948 varray_t procs; /* procedures */
949 varray_t aux_syms; /* auxiliary symbols */
950 struct efdr *next_file; /* next file descriptor */
951 /* string/type hash tables */
952 struct hash_control *str_hash; /* string hash table */
953 thash_t *thash_head[THASH_SIZE];
954 } efdr_t;
955
956 /* Pre-initialized extended file structure. */
957 static const efdr_t init_file = {
958 { /* FDR structure */
959 0, /* adr: memory address of beginning of file */
960 0, /* rss: file name (of source, if known) */
961 0, /* issBase: file's string space */
962 0, /* cbSs: number of bytes in the ss */
963 0, /* isymBase: beginning of symbols */
964 0, /* csym: count file's of symbols */
965 0, /* ilineBase: file's line symbols */
966 0, /* cline: count of file's line symbols */
967 0, /* ioptBase: file's optimization entries */
968 0, /* copt: count of file's optimization entries */
969 0, /* ipdFirst: start of procedures for this file */
970 0, /* cpd: count of procedures for this file */
971 0, /* iauxBase: file's auxiliary entries */
972 0, /* caux: count of file's auxiliary entries */
973 0, /* rfdBase: index into the file indirect table */
974 0, /* crfd: count file indirect entries */
975 langC, /* lang: language for this file */
976 1, /* fMerge: whether this file can be merged */
977 0, /* fReadin: true if read in (not just created) */
978 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */
979 GLEVEL_2, /* glevel: level this file was compiled with */
980 0, /* reserved: reserved for future use */
981 0, /* cbLineOffset: byte offset from header for this file ln's */
982 0, /* cbLine: size of lines for this file */
983 },
984
985 (FDR *)0, /* orig_fdr: original file header pointer */
986 (char *)0, /* name: pointer to filename */
987 0, /* fake: whether this is a faked .file */
988 0, /* void_type: ptr to aux node for void type */
989 0, /* int_type: ptr to aux node for int type */
990 (scope_t *)0, /* cur_scope: current scope being processed */
991 0, /* file_index: current file # */
992 0, /* nested_scopes: # nested scopes */
993 INIT_VARRAY (char), /* strings: local string varray */
994 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */
995 INIT_VARRAY (proc_t), /* procs: procedure varray */
996 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */
997
998 (struct efdr *)0, /* next_file: next file structure */
999
1000 (struct hash_control *)0, /* str_hash: string hash table */
1001 { 0 }, /* thash_head: type hash table */
1002 };
1003
1004 static efdr_t *first_file; /* first file descriptor */
1005 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */
1006
1007 /* Line number information is kept in a list until the assembly is
1008 finished. */
1009 typedef struct lineno_list {
1010 struct lineno_list *next; /* next element in list */
1011 efdr_t *file; /* file this line is in */
1012 proc_t *proc; /* procedure this line is in */
1013 fragS *frag; /* fragment this line number is in */
1014 unsigned long paddr; /* offset within fragment */
1015 long lineno; /* actual line number */
1016 } lineno_list_t;
1017
1018 static lineno_list_t *first_lineno;
1019 static lineno_list_t *last_lineno;
1020 static lineno_list_t **last_lineno_ptr = &first_lineno;
1021
1022 /* Sometimes there will be some .loc statements before a .ent. We
1023 keep them in this list so that we can fill in the procedure pointer
1024 after we see the .ent. */
1025 static lineno_list_t *noproc_lineno;
1026
1027 /* Union of various things that are held in pages. */
1028 typedef union page {
1029 char byte [ PAGE_SIZE ];
1030 unsigned char ubyte [ PAGE_SIZE ];
1031 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ];
1032 FDR ofile [ PAGE_SIZE / sizeof (FDR) ];
1033 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ];
1034 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ];
1035 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ];
1036 DNR dense [ PAGE_SIZE / sizeof (DNR) ];
1037 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ];
1038 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ];
1039 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ];
1040 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ];
1041 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ];
1042 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ];
1043 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ];
1044 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ];
1045 } page_type;
1046
1047 /* Structure holding allocation information for small sized structures. */
1048 typedef struct alloc_info {
1049 char *alloc_name; /* name of this allocation type (must be first) */
1050 page_type *cur_page; /* current page being allocated from */
1051 small_free_t free_list; /* current free list if any */
1052 int unallocated; /* number of elements unallocated on page */
1053 int total_alloc; /* total number of allocations */
1054 int total_free; /* total number of frees */
1055 int total_pages; /* total number of pages allocated */
1056 } alloc_info_t;
1057
1058 /* Type information collected together. */
1059 typedef struct type_info {
1060 bt_t basic_type; /* basic type */
1061 int orig_type; /* original COFF-based type */
1062 int num_tq; /* # type qualifiers */
1063 int num_dims; /* # dimensions */
1064 int num_sizes; /* # sizes */
1065 int extra_sizes; /* # extra sizes not tied with dims */
1066 tag_t * tag_ptr; /* tag pointer */
1067 int bitfield; /* symbol is a bitfield */
1068 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/
1069 symint_t dimensions [N_TQ]; /* dimensions for each array */
1070 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of
1071 struct/union/enum + bitfield size */
1072 } type_info_t;
1073
1074 /* Pre-initialized type_info struct. */
1075 static const type_info_t type_info_init = {
1076 bt_Nil, /* basic type */
1077 T_NULL, /* original COFF-based type */
1078 0, /* # type qualifiers */
1079 0, /* # dimensions */
1080 0, /* # sizes */
1081 0, /* sizes not tied with dims */
1082 NULL, /* ptr to tag */
1083 0, /* bitfield */
1084 { /* type qualifiers */
1085 tq_Nil,
1086 tq_Nil,
1087 tq_Nil,
1088 tq_Nil,
1089 tq_Nil,
1090 tq_Nil,
1091 },
1092 { /* dimensions */
1093 0,
1094 0,
1095 0,
1096 0,
1097 0,
1098 0
1099 },
1100 { /* sizes */
1101 0,
1102 0,
1103 0,
1104 0,
1105 0,
1106 0,
1107 0,
1108 0,
1109 },
1110 };
1111
1112 /* Global hash table for the tags table and global table for file
1113 descriptors. */
1114
1115 static varray_t file_desc = INIT_VARRAY (efdr_t);
1116
1117 static struct hash_control *tag_hash;
1118
1119 /* Static types for int and void. Also, remember the last function's
1120 type (which is set up when we encounter the declaration for the
1121 function, and used when the end block for the function is emitted. */
1122
1123 static type_info_t int_type_info;
1124 static type_info_t void_type_info;
1125 static type_info_t last_func_type_info;
1126 static symbolS *last_func_sym_value;
1127
1128 /* Convert COFF basic type to ECOFF basic type. The T_NULL type
1129 really should use bt_Void, but this causes the current ecoff GDB to
1130 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS
1131 2.0) doesn't understand it, even though the compiler generates it.
1132 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler
1133 suite, but for now go with what works.
1134
1135 It would make sense for the .type and .scl directives to use the
1136 ECOFF numbers directly, rather than using the COFF numbers and
1137 mapping them. Unfortunately, this is historically what mips-tfile
1138 expects, and changing gcc now would be a considerable pain (the
1139 native compiler generates debugging information internally, rather
1140 than via the assembler, so it will never use .type or .scl). */
1141
1142 static const bt_t map_coff_types[] = {
1143 bt_Nil, /* T_NULL */
1144 bt_Nil, /* T_ARG */
1145 bt_Char, /* T_CHAR */
1146 bt_Short, /* T_SHORT */
1147 bt_Int, /* T_INT */
1148 bt_Long, /* T_LONG */
1149 bt_Float, /* T_FLOAT */
1150 bt_Double, /* T_DOUBLE */
1151 bt_Struct, /* T_STRUCT */
1152 bt_Union, /* T_UNION */
1153 bt_Enum, /* T_ENUM */
1154 bt_Enum, /* T_MOE */
1155 bt_UChar, /* T_UCHAR */
1156 bt_UShort, /* T_USHORT */
1157 bt_UInt, /* T_UINT */
1158 bt_ULong /* T_ULONG */
1159 };
1160
1161 /* Convert COFF storage class to ECOFF storage class. */
1162 static const sc_t map_coff_storage[] = {
1163 sc_Nil, /* 0: C_NULL */
1164 sc_Abs, /* 1: C_AUTO auto var */
1165 sc_Undefined, /* 2: C_EXT external */
1166 sc_Data, /* 3: C_STAT static */
1167 sc_Register, /* 4: C_REG register */
1168 sc_Undefined, /* 5: C_EXTDEF ??? */
1169 sc_Text, /* 6: C_LABEL label */
1170 sc_Text, /* 7: C_ULABEL user label */
1171 sc_Info, /* 8: C_MOS member of struct */
1172 sc_Abs, /* 9: C_ARG argument */
1173 sc_Info, /* 10: C_STRTAG struct tag */
1174 sc_Info, /* 11: C_MOU member of union */
1175 sc_Info, /* 12: C_UNTAG union tag */
1176 sc_Info, /* 13: C_TPDEF typedef */
1177 sc_Data, /* 14: C_USTATIC ??? */
1178 sc_Info, /* 15: C_ENTAG enum tag */
1179 sc_Info, /* 16: C_MOE member of enum */
1180 sc_Register, /* 17: C_REGPARM register parameter */
1181 sc_Bits, /* 18; C_FIELD bitfield */
1182 sc_Nil, /* 19 */
1183 sc_Nil, /* 20 */
1184 sc_Nil, /* 21 */
1185 sc_Nil, /* 22 */
1186 sc_Nil, /* 23 */
1187 sc_Nil, /* 24 */
1188 sc_Nil, /* 25 */
1189 sc_Nil, /* 26 */
1190 sc_Nil, /* 27 */
1191 sc_Nil, /* 28 */
1192 sc_Nil, /* 29 */
1193 sc_Nil, /* 30 */
1194 sc_Nil, /* 31 */
1195 sc_Nil, /* 32 */
1196 sc_Nil, /* 33 */
1197 sc_Nil, /* 34 */
1198 sc_Nil, /* 35 */
1199 sc_Nil, /* 36 */
1200 sc_Nil, /* 37 */
1201 sc_Nil, /* 38 */
1202 sc_Nil, /* 39 */
1203 sc_Nil, /* 40 */
1204 sc_Nil, /* 41 */
1205 sc_Nil, /* 42 */
1206 sc_Nil, /* 43 */
1207 sc_Nil, /* 44 */
1208 sc_Nil, /* 45 */
1209 sc_Nil, /* 46 */
1210 sc_Nil, /* 47 */
1211 sc_Nil, /* 48 */
1212 sc_Nil, /* 49 */
1213 sc_Nil, /* 50 */
1214 sc_Nil, /* 51 */
1215 sc_Nil, /* 52 */
1216 sc_Nil, /* 53 */
1217 sc_Nil, /* 54 */
1218 sc_Nil, /* 55 */
1219 sc_Nil, /* 56 */
1220 sc_Nil, /* 57 */
1221 sc_Nil, /* 58 */
1222 sc_Nil, /* 59 */
1223 sc_Nil, /* 60 */
1224 sc_Nil, /* 61 */
1225 sc_Nil, /* 62 */
1226 sc_Nil, /* 63 */
1227 sc_Nil, /* 64 */
1228 sc_Nil, /* 65 */
1229 sc_Nil, /* 66 */
1230 sc_Nil, /* 67 */
1231 sc_Nil, /* 68 */
1232 sc_Nil, /* 69 */
1233 sc_Nil, /* 70 */
1234 sc_Nil, /* 71 */
1235 sc_Nil, /* 72 */
1236 sc_Nil, /* 73 */
1237 sc_Nil, /* 74 */
1238 sc_Nil, /* 75 */
1239 sc_Nil, /* 76 */
1240 sc_Nil, /* 77 */
1241 sc_Nil, /* 78 */
1242 sc_Nil, /* 79 */
1243 sc_Nil, /* 80 */
1244 sc_Nil, /* 81 */
1245 sc_Nil, /* 82 */
1246 sc_Nil, /* 83 */
1247 sc_Nil, /* 84 */
1248 sc_Nil, /* 85 */
1249 sc_Nil, /* 86 */
1250 sc_Nil, /* 87 */
1251 sc_Nil, /* 88 */
1252 sc_Nil, /* 89 */
1253 sc_Nil, /* 90 */
1254 sc_Nil, /* 91 */
1255 sc_Nil, /* 92 */
1256 sc_Nil, /* 93 */
1257 sc_Nil, /* 94 */
1258 sc_Nil, /* 95 */
1259 sc_Nil, /* 96 */
1260 sc_Nil, /* 97 */
1261 sc_Nil, /* 98 */
1262 sc_Nil, /* 99 */
1263 sc_Text, /* 100: C_BLOCK block start/end */
1264 sc_Text, /* 101: C_FCN function start/end */
1265 sc_Info, /* 102: C_EOS end of struct/union/enum */
1266 sc_Nil, /* 103: C_FILE file start */
1267 sc_Nil, /* 104: C_LINE line number */
1268 sc_Nil, /* 105: C_ALIAS combined type info */
1269 sc_Nil, /* 106: C_HIDDEN ??? */
1270 };
1271
1272 /* Convert COFF storage class to ECOFF symbol type. */
1273 static const st_t map_coff_sym_type[] = {
1274 st_Nil, /* 0: C_NULL */
1275 st_Local, /* 1: C_AUTO auto var */
1276 st_Global, /* 2: C_EXT external */
1277 st_Static, /* 3: C_STAT static */
1278 st_Local, /* 4: C_REG register */
1279 st_Global, /* 5: C_EXTDEF ??? */
1280 st_Label, /* 6: C_LABEL label */
1281 st_Label, /* 7: C_ULABEL user label */
1282 st_Member, /* 8: C_MOS member of struct */
1283 st_Param, /* 9: C_ARG argument */
1284 st_Block, /* 10: C_STRTAG struct tag */
1285 st_Member, /* 11: C_MOU member of union */
1286 st_Block, /* 12: C_UNTAG union tag */
1287 st_Typedef, /* 13: C_TPDEF typedef */
1288 st_Static, /* 14: C_USTATIC ??? */
1289 st_Block, /* 15: C_ENTAG enum tag */
1290 st_Member, /* 16: C_MOE member of enum */
1291 st_Param, /* 17: C_REGPARM register parameter */
1292 st_Member, /* 18; C_FIELD bitfield */
1293 st_Nil, /* 19 */
1294 st_Nil, /* 20 */
1295 st_Nil, /* 21 */
1296 st_Nil, /* 22 */
1297 st_Nil, /* 23 */
1298 st_Nil, /* 24 */
1299 st_Nil, /* 25 */
1300 st_Nil, /* 26 */
1301 st_Nil, /* 27 */
1302 st_Nil, /* 28 */
1303 st_Nil, /* 29 */
1304 st_Nil, /* 30 */
1305 st_Nil, /* 31 */
1306 st_Nil, /* 32 */
1307 st_Nil, /* 33 */
1308 st_Nil, /* 34 */
1309 st_Nil, /* 35 */
1310 st_Nil, /* 36 */
1311 st_Nil, /* 37 */
1312 st_Nil, /* 38 */
1313 st_Nil, /* 39 */
1314 st_Nil, /* 40 */
1315 st_Nil, /* 41 */
1316 st_Nil, /* 42 */
1317 st_Nil, /* 43 */
1318 st_Nil, /* 44 */
1319 st_Nil, /* 45 */
1320 st_Nil, /* 46 */
1321 st_Nil, /* 47 */
1322 st_Nil, /* 48 */
1323 st_Nil, /* 49 */
1324 st_Nil, /* 50 */
1325 st_Nil, /* 51 */
1326 st_Nil, /* 52 */
1327 st_Nil, /* 53 */
1328 st_Nil, /* 54 */
1329 st_Nil, /* 55 */
1330 st_Nil, /* 56 */
1331 st_Nil, /* 57 */
1332 st_Nil, /* 58 */
1333 st_Nil, /* 59 */
1334 st_Nil, /* 60 */
1335 st_Nil, /* 61 */
1336 st_Nil, /* 62 */
1337 st_Nil, /* 63 */
1338 st_Nil, /* 64 */
1339 st_Nil, /* 65 */
1340 st_Nil, /* 66 */
1341 st_Nil, /* 67 */
1342 st_Nil, /* 68 */
1343 st_Nil, /* 69 */
1344 st_Nil, /* 70 */
1345 st_Nil, /* 71 */
1346 st_Nil, /* 72 */
1347 st_Nil, /* 73 */
1348 st_Nil, /* 74 */
1349 st_Nil, /* 75 */
1350 st_Nil, /* 76 */
1351 st_Nil, /* 77 */
1352 st_Nil, /* 78 */
1353 st_Nil, /* 79 */
1354 st_Nil, /* 80 */
1355 st_Nil, /* 81 */
1356 st_Nil, /* 82 */
1357 st_Nil, /* 83 */
1358 st_Nil, /* 84 */
1359 st_Nil, /* 85 */
1360 st_Nil, /* 86 */
1361 st_Nil, /* 87 */
1362 st_Nil, /* 88 */
1363 st_Nil, /* 89 */
1364 st_Nil, /* 90 */
1365 st_Nil, /* 91 */
1366 st_Nil, /* 92 */
1367 st_Nil, /* 93 */
1368 st_Nil, /* 94 */
1369 st_Nil, /* 95 */
1370 st_Nil, /* 96 */
1371 st_Nil, /* 97 */
1372 st_Nil, /* 98 */
1373 st_Nil, /* 99 */
1374 st_Block, /* 100: C_BLOCK block start/end */
1375 st_Proc, /* 101: C_FCN function start/end */
1376 st_End, /* 102: C_EOS end of struct/union/enum */
1377 st_File, /* 103: C_FILE file start */
1378 st_Nil, /* 104: C_LINE line number */
1379 st_Nil, /* 105: C_ALIAS combined type info */
1380 st_Nil, /* 106: C_HIDDEN ??? */
1381 };
1382
1383 /* Keep track of different sized allocation requests. */
1384 static alloc_info_t alloc_counts[(int) alloc_type_last];
1385 \f
1386 /* Record whether we have seen any debugging information. */
1387 int ecoff_debugging_seen = 0;
1388
1389 /* Various statics. */
1390 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */
1391 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */
1392 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */
1393 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */
1394 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */
1395 #ifdef ECOFF_DEBUG
1396 static int debug = 0; /* trace functions */
1397 #endif
1398 static int stabs_seen = 0; /* != 0 if stabs have been seen */
1399
1400 static int current_file_idx;
1401 static const char *current_stabs_filename;
1402
1403 /* Pseudo symbol to use when putting stabs into the symbol table. */
1404 #ifndef STABS_SYMBOL
1405 #define STABS_SYMBOL "@stabs"
1406 #endif
1407
1408 static char stabs_symbol[] = STABS_SYMBOL;
1409 \f
1410 /* Prototypes for functions defined in this file. */
1411
1412 static void add_varray_page (varray_t *vp);
1413 static symint_t add_string (varray_t *vp,
1414 struct hash_control *hash_tbl,
1415 const char *str,
1416 shash_t **ret_hash);
1417 static localsym_t *add_ecoff_symbol (const char *str, st_t type,
1418 sc_t storage, symbolS *sym,
1419 bfd_vma addend, symint_t value,
1420 symint_t indx);
1421 static symint_t add_aux_sym_symint (symint_t aux_word);
1422 static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index);
1423 static symint_t add_aux_sym_tir (type_info_t *t,
1424 hash_state_t state,
1425 thash_t **hash_tbl);
1426 static tag_t *get_tag (const char *tag, localsym_t *sym, bt_t basic_type);
1427 static void add_unknown_tag (tag_t *ptag);
1428 static void add_procedure (char *func);
1429 static void add_file (const char *file_name, int indx, int fake);
1430 #ifdef ECOFF_DEBUG
1431 static char *sc_to_string (sc_t storage_class);
1432 static char *st_to_string (st_t symbol_type);
1433 #endif
1434 static void mark_stabs (int);
1435 static char *ecoff_add_bytes (char **buf, char **bufend,
1436 char *bufptr, unsigned long need);
1437 static unsigned long ecoff_padding_adjust
1438 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1439 unsigned long offset, char **bufptrptr);
1440 static unsigned long ecoff_build_lineno
1441 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1442 unsigned long offset, long *linecntptr);
1443 static unsigned long ecoff_build_symbols
1444 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1445 unsigned long offset);
1446 static unsigned long ecoff_build_procs
1447 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1448 unsigned long offset);
1449 static unsigned long ecoff_build_aux
1450 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1451 unsigned long offset);
1452 static unsigned long ecoff_build_strings (char **buf, char **bufend,
1453 unsigned long offset,
1454 varray_t *vp);
1455 static unsigned long ecoff_build_ss
1456 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1457 unsigned long offset);
1458 static unsigned long ecoff_build_fdr
1459 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1460 unsigned long offset);
1461 static void ecoff_setup_ext (void);
1462 static page_type *allocate_cluster (unsigned long npages);
1463 static page_type *allocate_page (void);
1464 static scope_t *allocate_scope (void);
1465 static void free_scope (scope_t *ptr);
1466 static vlinks_t *allocate_vlinks (void);
1467 static shash_t *allocate_shash (void);
1468 static thash_t *allocate_thash (void);
1469 static tag_t *allocate_tag (void);
1470 static void free_tag (tag_t *ptr);
1471 static forward_t *allocate_forward (void);
1472 static thead_t *allocate_thead (void);
1473 static void free_thead (thead_t *ptr);
1474 static lineno_list_t *allocate_lineno_list (void);
1475 \f
1476 /* This function should be called when the assembler starts up. */
1477
1478 void
1479 ecoff_read_begin_hook (void)
1480 {
1481 tag_hash = hash_new ();
1482 top_tag_head = allocate_thead ();
1483 top_tag_head->first_tag = (tag_t *) NULL;
1484 top_tag_head->free = (thead_t *) NULL;
1485 top_tag_head->prev = cur_tag_head;
1486 cur_tag_head = top_tag_head;
1487 }
1488
1489 /* This function should be called when a symbol is created. */
1490
1491 void
1492 ecoff_symbol_new_hook (symbolS *symbolP)
1493 {
1494 OBJ_SYMFIELD_TYPE *obj;
1495
1496 /* Make sure that we have a file pointer, but only if we have seen a
1497 file. If we haven't seen a file, then this is a probably special
1498 symbol created by md_begin which may required special handling at
1499 some point. Creating a dummy file with a dummy name is certainly
1500 wrong. */
1501 if (cur_file_ptr == (efdr_t *) NULL
1502 && seen_at_least_1_file ())
1503 add_file ((const char *) NULL, 0, 1);
1504 obj = symbol_get_obj (symbolP);
1505 obj->ecoff_file = cur_file_ptr;
1506 obj->ecoff_symbol = NULL;
1507 obj->ecoff_extern_size = 0;
1508 }
1509 \f
1510 /* Add a page to a varray object. */
1511
1512 static void
1513 add_varray_page (varray_t *vp /* varray to add page to */)
1514 {
1515 vlinks_t *new_links = allocate_vlinks ();
1516
1517 #ifdef MALLOC_CHECK
1518 if (vp->object_size > 1)
1519 new_links->datum = (page_type *) xcalloc (1, vp->object_size);
1520 else
1521 #endif
1522 new_links->datum = allocate_page ();
1523
1524 alloc_counts[(int) alloc_type_varray].total_alloc++;
1525 alloc_counts[(int) alloc_type_varray].total_pages++;
1526
1527 new_links->start_index = vp->num_allocated;
1528 vp->objects_last_page = 0;
1529
1530 if (vp->first == (vlinks_t *) NULL) /* first allocation? */
1531 vp->first = vp->last = new_links;
1532 else
1533 { /* 2nd or greater allocation */
1534 new_links->prev = vp->last;
1535 vp->last->next = new_links;
1536 vp->last = new_links;
1537 }
1538 }
1539 \f
1540 /* Add a string (and null pad) to one of the string tables. */
1541
1542 static symint_t
1543 add_string (varray_t *vp, /* string obstack */
1544 struct hash_control *hash_tbl, /* ptr to hash table */
1545 const char *str, /* string */
1546 shash_t **ret_hash /* return hash pointer */)
1547 {
1548 register unsigned long len = strlen (str);
1549 register shash_t *hash_ptr;
1550
1551 if (len >= PAGE_USIZE)
1552 as_fatal (_("string too big (%lu bytes)"), len);
1553
1554 hash_ptr = (shash_t *) hash_find (hash_tbl, str);
1555 if (hash_ptr == (shash_t *) NULL)
1556 {
1557 register const char *err;
1558
1559 if (vp->objects_last_page + len >= PAGE_USIZE)
1560 {
1561 vp->num_allocated =
1562 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE;
1563 add_varray_page (vp);
1564 }
1565
1566 hash_ptr = allocate_shash ();
1567 hash_ptr->indx = vp->num_allocated;
1568
1569 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page];
1570
1571 vp->objects_last_page += len + 1;
1572 vp->num_allocated += len + 1;
1573
1574 strcpy (hash_ptr->string, str);
1575
1576 err = hash_insert (hash_tbl, str, (char *) hash_ptr);
1577 if (err)
1578 as_fatal (_("inserting \"%s\" into string hash table: %s"),
1579 str, err);
1580 }
1581
1582 if (ret_hash != (shash_t **) NULL)
1583 *ret_hash = hash_ptr;
1584
1585 return hash_ptr->indx;
1586 }
1587 \f
1588 /* Add debugging information for a symbol. */
1589
1590 static localsym_t *
1591 add_ecoff_symbol (const char *str, /* symbol name */
1592 st_t type, /* symbol type */
1593 sc_t storage, /* storage class */
1594 symbolS *sym_value, /* associated symbol. */
1595 bfd_vma addend, /* addend to sym_value. */
1596 symint_t value, /* value of symbol */
1597 symint_t indx /* index to local/aux. syms */)
1598 {
1599 localsym_t *psym;
1600 register scope_t *pscope;
1601 register thead_t *ptag_head;
1602 register tag_t *ptag;
1603 register tag_t *ptag_next;
1604 register varray_t *vp;
1605 register int scope_delta = 0;
1606 shash_t *hash_ptr = (shash_t *) NULL;
1607
1608 if (cur_file_ptr == (efdr_t *) NULL)
1609 as_fatal (_("no current file pointer"));
1610
1611 vp = &cur_file_ptr->symbols;
1612
1613 if (vp->objects_last_page == vp->objects_per_page)
1614 add_varray_page (vp);
1615
1616 psym = &vp->last->datum->sym[vp->objects_last_page++];
1617
1618 if (str == (const char *) NULL && sym_value != (symbolS *) NULL)
1619 psym->name = S_GET_NAME (sym_value);
1620 else
1621 psym->name = str;
1622 psym->as_sym = sym_value;
1623 if (sym_value != (symbolS *) NULL)
1624 symbol_get_obj (sym_value)->ecoff_symbol = psym;
1625 psym->addend = addend;
1626 psym->file_ptr = cur_file_ptr;
1627 psym->proc_ptr = cur_proc_ptr;
1628 psym->begin_ptr = (localsym_t *) NULL;
1629 psym->index_ptr = (aux_t *) NULL;
1630 psym->forward_ref = (forward_t *) NULL;
1631 psym->sym_index = -1;
1632 memset (&psym->ecoff_sym, 0, sizeof (EXTR));
1633 psym->ecoff_sym.asym.value = value;
1634 psym->ecoff_sym.asym.st = (unsigned) type;
1635 psym->ecoff_sym.asym.sc = (unsigned) storage;
1636 psym->ecoff_sym.asym.index = indx;
1637
1638 /* If there is an associated symbol, we wait until the end of the
1639 assembly before deciding where to put the name (it may be just an
1640 external symbol). Otherwise, this is just a debugging symbol and
1641 the name should go with the current file. */
1642 if (sym_value == (symbolS *) NULL)
1643 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL)
1644 ? 0
1645 : add_string (&cur_file_ptr->strings,
1646 cur_file_ptr->str_hash,
1647 str,
1648 &hash_ptr));
1649
1650 ++vp->num_allocated;
1651
1652 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym))
1653 return psym;
1654
1655 /* Save the symbol within the hash table if this is a static
1656 item, and it has a name. */
1657 if (hash_ptr != (shash_t *) NULL
1658 && (type == st_Global || type == st_Static || type == st_Label
1659 || type == st_Proc || type == st_StaticProc))
1660 hash_ptr->sym_ptr = psym;
1661
1662 /* push or pop a scope if appropriate. */
1663 switch (type)
1664 {
1665 default:
1666 break;
1667
1668 case st_File: /* beginning of file */
1669 case st_Proc: /* procedure */
1670 case st_StaticProc: /* static procedure */
1671 case st_Block: /* begin scope */
1672 pscope = allocate_scope ();
1673 pscope->prev = cur_file_ptr->cur_scope;
1674 pscope->lsym = psym;
1675 pscope->type = type;
1676 cur_file_ptr->cur_scope = pscope;
1677
1678 if (type != st_File)
1679 scope_delta = 1;
1680
1681 /* For every block type except file, struct, union, or
1682 enumeration blocks, push a level on the tag stack. We omit
1683 file types, so that tags can span file boundaries. */
1684 if (type != st_File && storage != sc_Info)
1685 {
1686 ptag_head = allocate_thead ();
1687 ptag_head->first_tag = 0;
1688 ptag_head->prev = cur_tag_head;
1689 cur_tag_head = ptag_head;
1690 }
1691 break;
1692
1693 case st_End:
1694 pscope = cur_file_ptr->cur_scope;
1695 if (pscope == (scope_t *) NULL)
1696 as_fatal (_("too many st_End's"));
1697 else
1698 {
1699 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st;
1700
1701 psym->begin_ptr = pscope->lsym;
1702
1703 if (begin_type != st_File)
1704 scope_delta = -1;
1705
1706 /* Except for file, structure, union, or enumeration end
1707 blocks remove all tags created within this scope. */
1708 if (begin_type != st_File && storage != sc_Info)
1709 {
1710 ptag_head = cur_tag_head;
1711 cur_tag_head = ptag_head->prev;
1712
1713 for (ptag = ptag_head->first_tag;
1714 ptag != (tag_t *) NULL;
1715 ptag = ptag_next)
1716 {
1717 if (ptag->forward_ref != (forward_t *) NULL)
1718 add_unknown_tag (ptag);
1719
1720 ptag_next = ptag->same_block;
1721 ptag->hash_ptr->tag_ptr = ptag->same_name;
1722 free_tag (ptag);
1723 }
1724
1725 free_thead (ptag_head);
1726 }
1727
1728 cur_file_ptr->cur_scope = pscope->prev;
1729
1730 /* block begin gets next sym #. This is set when we know
1731 the symbol index value. */
1732
1733 /* Functions push two or more aux words as follows:
1734 1st word: index+1 of the end symbol (filled in later).
1735 2nd word: type of the function (plus any aux words needed).
1736 Also, tie the external pointer back to the function begin symbol. */
1737 if (begin_type != st_File && begin_type != st_Block)
1738 {
1739 symint_t ty;
1740 varray_t *svp = &cur_file_ptr->aux_syms;
1741
1742 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0);
1743 pscope->lsym->index_ptr =
1744 &svp->last->datum->aux[svp->objects_last_page - 1];
1745 ty = add_aux_sym_tir (&last_func_type_info,
1746 hash_no,
1747 &cur_file_ptr->thash_head[0]);
1748
1749 /* This seems to be unnecessary. I'm not even sure what it is
1750 * intended to do. It's from mips-tfile.
1751 * if (last_func_sym_value != (symbolS *) NULL)
1752 * {
1753 * last_func_sym_value->ifd = cur_file_ptr->file_index;
1754 * last_func_sym_value->index = ty;
1755 * }
1756 */
1757 }
1758
1759 free_scope (pscope);
1760 }
1761 }
1762
1763 cur_file_ptr->nested_scopes += scope_delta;
1764
1765 #ifdef ECOFF_DEBUG
1766 if (debug && type != st_File
1767 && (debug > 2 || type == st_Block || type == st_End
1768 || type == st_Proc || type == st_StaticProc))
1769 {
1770 char *sc_str = sc_to_string (storage);
1771 char *st_str = st_to_string (type);
1772 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0);
1773
1774 fprintf (stderr,
1775 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s",
1776 value, depth, sc_str);
1777
1778 if (str_start && str_end_p1 - str_start > 0)
1779 fprintf (stderr, " st= %-11s name= %.*s\n",
1780 st_str, str_end_p1 - str_start, str_start);
1781 else
1782 {
1783 unsigned long len = strlen (st_str);
1784 fprintf (stderr, " st= %.*s\n", len - 1, st_str);
1785 }
1786 }
1787 #endif
1788
1789 return psym;
1790 }
1791 \f
1792 /* Add an auxiliary symbol (passing a symint). This is actually used
1793 for integral aux types, not just symints. */
1794
1795 static symint_t
1796 add_aux_sym_symint (symint_t aux_word /* auxiliary information word */)
1797 {
1798 register varray_t *vp;
1799 register aux_t *aux_ptr;
1800
1801 if (cur_file_ptr == (efdr_t *) NULL)
1802 as_fatal (_("no current file pointer"));
1803
1804 vp = &cur_file_ptr->aux_syms;
1805
1806 if (vp->objects_last_page == vp->objects_per_page)
1807 add_varray_page (vp);
1808
1809 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1810 aux_ptr->type = aux_isym;
1811 aux_ptr->data.isym = aux_word;
1812
1813 return vp->num_allocated++;
1814 }
1815
1816 /* Add an auxiliary symbol (passing a file/symbol index combo). */
1817
1818 static symint_t
1819 add_aux_sym_rndx (int file_index, symint_t sym_index)
1820 {
1821 register varray_t *vp;
1822 register aux_t *aux_ptr;
1823
1824 if (cur_file_ptr == (efdr_t *) NULL)
1825 as_fatal (_("no current file pointer"));
1826
1827 vp = &cur_file_ptr->aux_syms;
1828
1829 if (vp->objects_last_page == vp->objects_per_page)
1830 add_varray_page (vp);
1831
1832 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1833 aux_ptr->type = aux_rndx;
1834 aux_ptr->data.rndx.rfd = file_index;
1835 aux_ptr->data.rndx.index = sym_index;
1836
1837 return vp->num_allocated++;
1838 }
1839 \f
1840 /* Add an auxiliary symbol (passing the basic type and possibly
1841 type qualifiers). */
1842
1843 static symint_t
1844 add_aux_sym_tir (type_info_t *t, /* current type information */
1845 hash_state_t state, /* whether to hash type or not */
1846 thash_t **hash_tbl /* pointer to hash table to use */)
1847 {
1848 register varray_t *vp;
1849 register aux_t *aux_ptr;
1850 static AUXU init_aux;
1851 symint_t ret;
1852 int i;
1853 AUXU aux;
1854
1855 if (cur_file_ptr == (efdr_t *) NULL)
1856 as_fatal (_("no current file pointer"));
1857
1858 vp = &cur_file_ptr->aux_syms;
1859
1860 aux = init_aux;
1861 aux.ti.bt = (int) t->basic_type;
1862 aux.ti.continued = 0;
1863 aux.ti.fBitfield = t->bitfield;
1864
1865 aux.ti.tq0 = (int) t->type_qualifiers[0];
1866 aux.ti.tq1 = (int) t->type_qualifiers[1];
1867 aux.ti.tq2 = (int) t->type_qualifiers[2];
1868 aux.ti.tq3 = (int) t->type_qualifiers[3];
1869 aux.ti.tq4 = (int) t->type_qualifiers[4];
1870 aux.ti.tq5 = (int) t->type_qualifiers[5];
1871
1872 /* For anything that adds additional information, we must not hash,
1873 so check here, and reset our state. */
1874
1875 if (state != hash_no
1876 && (t->type_qualifiers[0] == tq_Array
1877 || t->type_qualifiers[1] == tq_Array
1878 || t->type_qualifiers[2] == tq_Array
1879 || t->type_qualifiers[3] == tq_Array
1880 || t->type_qualifiers[4] == tq_Array
1881 || t->type_qualifiers[5] == tq_Array
1882 || t->basic_type == bt_Struct
1883 || t->basic_type == bt_Union
1884 || t->basic_type == bt_Enum
1885 || t->bitfield
1886 || t->num_dims > 0))
1887 state = hash_no;
1888
1889 /* See if we can hash this type, and save some space, but some types
1890 can't be hashed (because they contain arrays or continuations),
1891 and others can be put into the hash list, but cannot use existing
1892 types because other aux entries precede this one. */
1893
1894 if (state != hash_no)
1895 {
1896 register thash_t *hash_ptr;
1897 register symint_t hi;
1898
1899 hi = aux.isym & ((1 << HASHBITS) - 1);
1900 hi %= THASH_SIZE;
1901
1902 for (hash_ptr = hash_tbl[hi];
1903 hash_ptr != (thash_t *)0;
1904 hash_ptr = hash_ptr->next)
1905 {
1906 if (aux.isym == hash_ptr->type.isym)
1907 break;
1908 }
1909
1910 if (hash_ptr != (thash_t *) NULL && state == hash_yes)
1911 return hash_ptr->indx;
1912
1913 if (hash_ptr == (thash_t *) NULL)
1914 {
1915 hash_ptr = allocate_thash ();
1916 hash_ptr->next = hash_tbl[hi];
1917 hash_ptr->type = aux;
1918 hash_ptr->indx = vp->num_allocated;
1919 hash_tbl[hi] = hash_ptr;
1920 }
1921 }
1922
1923 /* Everything is set up, add the aux symbol. */
1924 if (vp->objects_last_page == vp->objects_per_page)
1925 add_varray_page (vp);
1926
1927 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1928 aux_ptr->type = aux_tir;
1929 aux_ptr->data = aux;
1930
1931 ret = vp->num_allocated++;
1932
1933 /* Add bitfield length if it exists.
1934
1935 NOTE: Mips documentation claims bitfield goes at the end of the
1936 AUX record, but the DECstation compiler emits it here.
1937 (This would only make a difference for enum bitfields.)
1938
1939 Also note: We use the last size given since gcc may emit 2
1940 for an enum bitfield. */
1941
1942 if (t->bitfield)
1943 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]);
1944
1945 /* Add tag information if needed. Structure, union, and enum
1946 references add 2 aux symbols: a [file index, symbol index]
1947 pointer to the structure type, and the current file index. */
1948
1949 if (t->basic_type == bt_Struct
1950 || t->basic_type == bt_Union
1951 || t->basic_type == bt_Enum)
1952 {
1953 register symint_t file_index = t->tag_ptr->ifd;
1954 register localsym_t *sym = t->tag_ptr->sym;
1955 register forward_t *forward_ref = allocate_forward ();
1956
1957 if (sym != (localsym_t *) NULL)
1958 {
1959 forward_ref->next = sym->forward_ref;
1960 sym->forward_ref = forward_ref;
1961 }
1962 else
1963 {
1964 forward_ref->next = t->tag_ptr->forward_ref;
1965 t->tag_ptr->forward_ref = forward_ref;
1966 }
1967
1968 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil);
1969 forward_ref->index_ptr
1970 = &vp->last->datum->aux[vp->objects_last_page - 1];
1971
1972 (void) add_aux_sym_symint (file_index);
1973 forward_ref->ifd_ptr
1974 = &vp->last->datum->aux[vp->objects_last_page - 1];
1975 }
1976
1977 /* Add information about array bounds if they exist. */
1978 for (i = 0; i < t->num_dims; i++)
1979 {
1980 (void) add_aux_sym_rndx (ST_RFDESCAPE,
1981 cur_file_ptr->int_type);
1982
1983 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/
1984 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */
1985 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/
1986 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */
1987 ? 0
1988 : (t->sizes[i] * 8) / t->dimensions[i]);
1989 };
1990
1991 /* NOTE: Mips documentation claims that the bitfield width goes here.
1992 But it needs to be emitted earlier. */
1993
1994 return ret;
1995 }
1996 \f
1997 /* Add a tag to the tag table (unless it already exists). */
1998
1999 static tag_t *
2000 get_tag (const char *tag, /* tag name */
2001 localsym_t *sym, /* tag start block */
2002 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */)
2003 {
2004 shash_t *hash_ptr;
2005 const char *err;
2006 tag_t *tag_ptr;
2007
2008 if (cur_file_ptr == (efdr_t *) NULL)
2009 as_fatal (_("no current file pointer"));
2010
2011 hash_ptr = (shash_t *) hash_find (tag_hash, tag);
2012
2013 if (hash_ptr != (shash_t *) NULL
2014 && hash_ptr->tag_ptr != (tag_t *) NULL)
2015 {
2016 tag_ptr = hash_ptr->tag_ptr;
2017 if (sym != (localsym_t *) NULL)
2018 {
2019 tag_ptr->basic_type = basic_type;
2020 tag_ptr->ifd = cur_file_ptr->file_index;
2021 tag_ptr->sym = sym;
2022 }
2023 return tag_ptr;
2024 }
2025
2026 if (hash_ptr == (shash_t *) NULL)
2027 {
2028 char *perm;
2029
2030 perm = xstrdup (tag);
2031 hash_ptr = allocate_shash ();
2032 err = hash_insert (tag_hash, perm, (char *) hash_ptr);
2033 if (err)
2034 as_fatal (_("inserting \"%s\" into tag hash table: %s"),
2035 tag, err);
2036 hash_ptr->string = perm;
2037 }
2038
2039 tag_ptr = allocate_tag ();
2040 tag_ptr->forward_ref = (forward_t *) NULL;
2041 tag_ptr->hash_ptr = hash_ptr;
2042 tag_ptr->same_name = hash_ptr->tag_ptr;
2043 tag_ptr->basic_type = basic_type;
2044 tag_ptr->sym = sym;
2045 tag_ptr->ifd = ((sym == (localsym_t *) NULL)
2046 ? (symint_t) -1
2047 : cur_file_ptr->file_index);
2048 tag_ptr->same_block = cur_tag_head->first_tag;
2049
2050 cur_tag_head->first_tag = tag_ptr;
2051 hash_ptr->tag_ptr = tag_ptr;
2052
2053 return tag_ptr;
2054 }
2055 \f
2056 /* Add an unknown {struct, union, enum} tag. */
2057
2058 static void
2059 add_unknown_tag (tag_t *ptag /* pointer to tag information */)
2060 {
2061 shash_t *hash_ptr = ptag->hash_ptr;
2062 char *name = hash_ptr->string;
2063 localsym_t *sym;
2064 forward_t **pf;
2065
2066 #ifdef ECOFF_DEBUG
2067 if (debug > 1)
2068 {
2069 char *agg_type = "{unknown aggregate type}";
2070 switch (ptag->basic_type)
2071 {
2072 case bt_Struct: agg_type = "struct"; break;
2073 case bt_Union: agg_type = "union"; break;
2074 case bt_Enum: agg_type = "enum"; break;
2075 default: break;
2076 }
2077
2078 fprintf (stderr, "unknown %s %.*s found\n", agg_type,
2079 hash_ptr->len, name_start);
2080 }
2081 #endif
2082
2083 sym = add_ecoff_symbol (name,
2084 st_Block,
2085 sc_Info,
2086 (symbolS *) NULL,
2087 (bfd_vma) 0,
2088 (symint_t) 0,
2089 (symint_t) 0);
2090
2091 (void) add_ecoff_symbol (name,
2092 st_End,
2093 sc_Info,
2094 (symbolS *) NULL,
2095 (bfd_vma) 0,
2096 (symint_t) 0,
2097 (symint_t) 0);
2098
2099 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next)
2100 ;
2101 *pf = ptag->forward_ref;
2102 }
2103 \f
2104 /* Add a procedure to the current file's list of procedures, and record
2105 this is the current procedure. */
2106
2107 static void
2108 add_procedure (char *func /* func name */)
2109 {
2110 register varray_t *vp;
2111 register proc_t *new_proc_ptr;
2112 symbolS *sym;
2113
2114 #ifdef ECOFF_DEBUG
2115 if (debug)
2116 fputc ('\n', stderr);
2117 #endif
2118
2119 if (cur_file_ptr == (efdr_t *) NULL)
2120 as_fatal (_("no current file pointer"));
2121
2122 vp = &cur_file_ptr->procs;
2123
2124 if (vp->objects_last_page == vp->objects_per_page)
2125 add_varray_page (vp);
2126
2127 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++];
2128
2129 if (first_proc_ptr == (proc_t *) NULL)
2130 first_proc_ptr = new_proc_ptr;
2131
2132 vp->num_allocated++;
2133
2134 new_proc_ptr->pdr.isym = -1;
2135 new_proc_ptr->pdr.iline = -1;
2136 new_proc_ptr->pdr.lnLow = -1;
2137 new_proc_ptr->pdr.lnHigh = -1;
2138
2139 /* Set the BSF_FUNCTION flag for the symbol. */
2140 sym = symbol_find_or_make (func);
2141 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION;
2142
2143 /* Push the start of the function. */
2144 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text,
2145 sym, (bfd_vma) 0, (symint_t) 0,
2146 (symint_t) 0);
2147
2148 ++proc_cnt;
2149
2150 /* Fill in the linenos preceding the .ent, if any. */
2151 if (noproc_lineno != (lineno_list_t *) NULL)
2152 {
2153 lineno_list_t *l;
2154
2155 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next)
2156 l->proc = new_proc_ptr;
2157 *last_lineno_ptr = noproc_lineno;
2158 while (*last_lineno_ptr != NULL)
2159 {
2160 last_lineno = *last_lineno_ptr;
2161 last_lineno_ptr = &last_lineno->next;
2162 }
2163 noproc_lineno = (lineno_list_t *) NULL;
2164 }
2165 }
2166
2167 symbolS *
2168 ecoff_get_cur_proc_sym (void)
2169 {
2170 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL);
2171 }
2172 \f
2173 /* Add a new filename, and set up all of the file relative
2174 virtual arrays (strings, symbols, aux syms, etc.). Record
2175 where the current file structure lives. */
2176
2177 static void
2178 add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake)
2179 {
2180 register int first_ch;
2181 register efdr_t *fil_ptr;
2182
2183 #ifdef ECOFF_DEBUG
2184 if (debug)
2185 fprintf (stderr, "\tfile\t%.*s\n", len, file_start);
2186 #endif
2187
2188 /* If the file name is NULL, then no .file symbol appeared, and we
2189 want to use the actual file name. */
2190 if (file_name == (const char *) NULL)
2191 {
2192 char *file;
2193
2194 if (first_file != (efdr_t *) NULL)
2195 as_fatal (_("fake .file after real one"));
2196 as_where (&file, (unsigned int *) NULL);
2197 file_name = (const char *) file;
2198
2199 /* Automatically generate ECOFF debugging information, since I
2200 think that's what other ECOFF assemblers do. We don't do
2201 this if we see a .file directive with a string, since that
2202 implies that some sort of debugging information is being
2203 provided. */
2204 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED)
2205 debug_type = DEBUG_ECOFF;
2206 }
2207 else if (debug_type == DEBUG_UNSPECIFIED)
2208 debug_type = DEBUG_NONE;
2209
2210 #ifndef NO_LISTING
2211 if (listing)
2212 listing_source_file (file_name);
2213 #endif
2214
2215 current_stabs_filename = file_name;
2216
2217 /* If we're creating stabs, then we don't actually make a new FDR.
2218 Instead, we just create a stabs symbol. */
2219 if (stabs_seen)
2220 {
2221 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2222 symbol_new ("L0\001", now_seg,
2223 (valueT) frag_now_fix (),
2224 frag_now),
2225 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL));
2226 return;
2227 }
2228
2229 first_ch = *file_name;
2230
2231 /* FIXME: We can't safely merge files which have line number
2232 information (fMerge will be zero in this case). Otherwise, we
2233 get incorrect line number debugging info. See for instance
2234 ecoff_build_lineno, which will end up setting all file->fdr.*
2235 fields multiple times, resulting in incorrect debug info. In
2236 order to make this work right, all line number and symbol info
2237 for the same source file has to be adjacent in the object file,
2238 so that a single file descriptor can be used to point to them.
2239 This would require maintaining file specific lists of line
2240 numbers and symbols for each file, so that they can be merged
2241 together (or output together) when two .file pseudo-ops are
2242 merged into one file descriptor. */
2243
2244 /* See if the file has already been created. */
2245 for (fil_ptr = first_file;
2246 fil_ptr != (efdr_t *) NULL;
2247 fil_ptr = fil_ptr->next_file)
2248 {
2249 if (first_ch == fil_ptr->name[0]
2250 && strcmp (file_name, fil_ptr->name) == 0
2251 && fil_ptr->fdr.fMerge)
2252 {
2253 cur_file_ptr = fil_ptr;
2254 if (! fake)
2255 cur_file_ptr->fake = 0;
2256 break;
2257 }
2258 }
2259
2260 /* If this is a new file, create it. */
2261 if (fil_ptr == (efdr_t *) NULL)
2262 {
2263 if (file_desc.objects_last_page == file_desc.objects_per_page)
2264 add_varray_page (&file_desc);
2265
2266 fil_ptr = cur_file_ptr =
2267 &file_desc.last->datum->file[file_desc.objects_last_page++];
2268 *fil_ptr = init_file;
2269
2270 fil_ptr->file_index = current_file_idx++;
2271 ++file_desc.num_allocated;
2272
2273 fil_ptr->fake = fake;
2274
2275 /* Allocate the string hash table. */
2276 fil_ptr->str_hash = hash_new ();
2277
2278 /* Make sure 0 byte in string table is null */
2279 add_string (&fil_ptr->strings,
2280 fil_ptr->str_hash,
2281 "",
2282 (shash_t **)0);
2283
2284 if (strlen (file_name) > PAGE_USIZE - 2)
2285 as_fatal (_("filename goes over one page boundary"));
2286
2287 /* Push the start of the filename. We assume that the filename
2288 will be stored at string offset 1. */
2289 (void) add_ecoff_symbol (file_name, st_File, sc_Text,
2290 (symbolS *) NULL, (bfd_vma) 0,
2291 (symint_t) 0, (symint_t) 0);
2292 fil_ptr->fdr.rss = 1;
2293 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1];
2294
2295 /* Update the linked list of file descriptors. */
2296 *last_file_ptr = fil_ptr;
2297 last_file_ptr = &fil_ptr->next_file;
2298
2299 /* Add void & int types to the file (void should be first to catch
2300 errant 0's within the index fields). */
2301 fil_ptr->void_type = add_aux_sym_tir (&void_type_info,
2302 hash_yes,
2303 &cur_file_ptr->thash_head[0]);
2304
2305 fil_ptr->int_type = add_aux_sym_tir (&int_type_info,
2306 hash_yes,
2307 &cur_file_ptr->thash_head[0]);
2308 }
2309 }
2310
2311 /* This function is called when the assembler notices a preprocessor
2312 directive switching to a new file. This will not happen in
2313 compiler output, only in hand coded assembler. */
2314
2315 void
2316 ecoff_new_file (const char *name, int appfile ATTRIBUTE_UNUSED)
2317 {
2318 if (cur_file_ptr != NULL && strcmp (cur_file_ptr->name, name) == 0)
2319 return;
2320 add_file (name, 0, 0);
2321
2322 /* This is a hand coded assembler file, so automatically turn on
2323 debugging information. */
2324 if (debug_type == DEBUG_UNSPECIFIED)
2325 debug_type = DEBUG_ECOFF;
2326 }
2327 \f
2328 #ifdef ECOFF_DEBUG
2329
2330 /* Convert storage class to string. */
2331
2332 static char *
2333 sc_to_string (storage_class)
2334 sc_t storage_class;
2335 {
2336 switch (storage_class)
2337 {
2338 case sc_Nil: return "Nil,";
2339 case sc_Text: return "Text,";
2340 case sc_Data: return "Data,";
2341 case sc_Bss: return "Bss,";
2342 case sc_Register: return "Register,";
2343 case sc_Abs: return "Abs,";
2344 case sc_Undefined: return "Undefined,";
2345 case sc_CdbLocal: return "CdbLocal,";
2346 case sc_Bits: return "Bits,";
2347 case sc_CdbSystem: return "CdbSystem,";
2348 case sc_RegImage: return "RegImage,";
2349 case sc_Info: return "Info,";
2350 case sc_UserStruct: return "UserStruct,";
2351 case sc_SData: return "SData,";
2352 case sc_SBss: return "SBss,";
2353 case sc_RData: return "RData,";
2354 case sc_Var: return "Var,";
2355 case sc_Common: return "Common,";
2356 case sc_SCommon: return "SCommon,";
2357 case sc_VarRegister: return "VarRegister,";
2358 case sc_Variant: return "Variant,";
2359 case sc_SUndefined: return "SUndefined,";
2360 case sc_Init: return "Init,";
2361 case sc_Max: return "Max,";
2362 }
2363
2364 return "???,";
2365 }
2366
2367 #endif /* DEBUG */
2368 \f
2369 #ifdef ECOFF_DEBUG
2370
2371 /* Convert symbol type to string. */
2372
2373 static char *
2374 st_to_string (symbol_type)
2375 st_t symbol_type;
2376 {
2377 switch (symbol_type)
2378 {
2379 case st_Nil: return "Nil,";
2380 case st_Global: return "Global,";
2381 case st_Static: return "Static,";
2382 case st_Param: return "Param,";
2383 case st_Local: return "Local,";
2384 case st_Label: return "Label,";
2385 case st_Proc: return "Proc,";
2386 case st_Block: return "Block,";
2387 case st_End: return "End,";
2388 case st_Member: return "Member,";
2389 case st_Typedef: return "Typedef,";
2390 case st_File: return "File,";
2391 case st_RegReloc: return "RegReloc,";
2392 case st_Forward: return "Forward,";
2393 case st_StaticProc: return "StaticProc,";
2394 case st_Constant: return "Constant,";
2395 case st_Str: return "String,";
2396 case st_Number: return "Number,";
2397 case st_Expr: return "Expr,";
2398 case st_Type: return "Type,";
2399 case st_Max: return "Max,";
2400 }
2401
2402 return "???,";
2403 }
2404
2405 #endif /* DEBUG */
2406 \f
2407 /* Parse .begin directives which have a label as the first argument
2408 which gives the location of the start of the block. */
2409
2410 void
2411 ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED)
2412 {
2413 char *name;
2414 char name_end;
2415
2416 if (cur_file_ptr == (efdr_t *) NULL)
2417 {
2418 as_warn (_(".begin directive without a preceding .file directive"));
2419 demand_empty_rest_of_line ();
2420 return;
2421 }
2422
2423 if (cur_proc_ptr == (proc_t *) NULL)
2424 {
2425 as_warn (_(".begin directive without a preceding .ent directive"));
2426 demand_empty_rest_of_line ();
2427 return;
2428 }
2429
2430 name = input_line_pointer;
2431 name_end = get_symbol_end ();
2432
2433 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text,
2434 symbol_find_or_make (name),
2435 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2436
2437 *input_line_pointer = name_end;
2438
2439 /* The line number follows, but we don't use it. */
2440 (void) get_absolute_expression ();
2441 demand_empty_rest_of_line ();
2442 }
2443 \f
2444 /* Parse .bend directives which have a label as the first argument
2445 which gives the location of the end of the block. */
2446
2447 void
2448 ecoff_directive_bend (int ignore ATTRIBUTE_UNUSED)
2449 {
2450 char *name;
2451 char name_end;
2452 symbolS *endsym;
2453
2454 if (cur_file_ptr == (efdr_t *) NULL)
2455 {
2456 as_warn (_(".bend directive without a preceding .file directive"));
2457 demand_empty_rest_of_line ();
2458 return;
2459 }
2460
2461 if (cur_proc_ptr == (proc_t *) NULL)
2462 {
2463 as_warn (_(".bend directive without a preceding .ent directive"));
2464 demand_empty_rest_of_line ();
2465 return;
2466 }
2467
2468 name = input_line_pointer;
2469 name_end = get_symbol_end ();
2470
2471 /* The value is the distance between the .bend directive and the
2472 corresponding symbol. We fill in the offset when we write out
2473 the symbol. */
2474 endsym = symbol_find (name);
2475 if (endsym == (symbolS *) NULL)
2476 as_warn (_(".bend directive names unknown symbol"));
2477 else
2478 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym,
2479 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2480
2481 *input_line_pointer = name_end;
2482
2483 /* The line number follows, but we don't use it. */
2484 (void) get_absolute_expression ();
2485 demand_empty_rest_of_line ();
2486 }
2487 \f
2488 /* COFF debugging information is provided as a series of directives
2489 (.def, .scl, etc.). We build up information as we read the
2490 directives in the following static variables, and file it away when
2491 we reach the .endef directive. */
2492 static char *coff_sym_name;
2493 static type_info_t coff_type;
2494 static sc_t coff_storage_class;
2495 static st_t coff_symbol_typ;
2496 static int coff_is_function;
2497 static char *coff_tag;
2498 static valueT coff_value;
2499 static symbolS *coff_sym_value;
2500 static bfd_vma coff_sym_addend;
2501 static int coff_inside_enumeration;
2502
2503 /* Handle a .def directive: start defining a symbol. */
2504
2505 void
2506 ecoff_directive_def (int ignore ATTRIBUTE_UNUSED)
2507 {
2508 char *name;
2509 char name_end;
2510
2511 ecoff_debugging_seen = 1;
2512
2513 SKIP_WHITESPACE ();
2514
2515 name = input_line_pointer;
2516 name_end = get_symbol_end ();
2517
2518 if (coff_sym_name != (char *) NULL)
2519 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored"));
2520 else if (*name == '\0')
2521 as_warn (_("empty symbol name in .def; ignored"));
2522 else
2523 {
2524 if (coff_sym_name != (char *) NULL)
2525 free (coff_sym_name);
2526 if (coff_tag != (char *) NULL)
2527 free (coff_tag);
2528
2529 coff_sym_name = xstrdup (name);
2530 coff_type = type_info_init;
2531 coff_storage_class = sc_Nil;
2532 coff_symbol_typ = st_Nil;
2533 coff_is_function = 0;
2534 coff_tag = (char *) NULL;
2535 coff_value = 0;
2536 coff_sym_value = (symbolS *) NULL;
2537 coff_sym_addend = 0;
2538 }
2539
2540 *input_line_pointer = name_end;
2541
2542 demand_empty_rest_of_line ();
2543 }
2544
2545 /* Handle a .dim directive, used to give dimensions for an array. The
2546 arguments are comma separated numbers. mips-tfile assumes that
2547 there will not be more than 6 dimensions, and gdb won't read any
2548 more than that anyhow, so I will also make that assumption. */
2549
2550 void
2551 ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED)
2552 {
2553 int dimens[N_TQ];
2554 int i;
2555
2556 if (coff_sym_name == (char *) NULL)
2557 {
2558 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored"));
2559 demand_empty_rest_of_line ();
2560 return;
2561 }
2562
2563 for (i = 0; i < N_TQ; i++)
2564 {
2565 SKIP_WHITESPACE ();
2566 dimens[i] = get_absolute_expression ();
2567 if (*input_line_pointer == ',')
2568 ++input_line_pointer;
2569 else
2570 {
2571 if (*input_line_pointer != '\n'
2572 && *input_line_pointer != ';')
2573 as_warn (_("badly formed .dim directive"));
2574 break;
2575 }
2576 }
2577
2578 if (i == N_TQ)
2579 --i;
2580
2581 /* The dimensions are stored away in reverse order. */
2582 for (; i >= 0; i--)
2583 {
2584 if (coff_type.num_dims >= N_TQ)
2585 {
2586 as_warn (_("too many .dim entries"));
2587 break;
2588 }
2589 coff_type.dimensions[coff_type.num_dims] = dimens[i];
2590 ++coff_type.num_dims;
2591 }
2592
2593 demand_empty_rest_of_line ();
2594 }
2595
2596 /* Handle a .scl directive, which sets the COFF storage class of the
2597 symbol. */
2598
2599 void
2600 ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED)
2601 {
2602 long val;
2603
2604 if (coff_sym_name == (char *) NULL)
2605 {
2606 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored"));
2607 demand_empty_rest_of_line ();
2608 return;
2609 }
2610
2611 val = get_absolute_expression ();
2612
2613 coff_symbol_typ = map_coff_sym_type[val];
2614 coff_storage_class = map_coff_storage[val];
2615
2616 demand_empty_rest_of_line ();
2617 }
2618
2619 /* Handle a .size directive. For some reason mips-tfile.c thinks that
2620 .size can have multiple arguments. We humor it, although gcc will
2621 never generate more than one argument. */
2622
2623 void
2624 ecoff_directive_size (int ignore ATTRIBUTE_UNUSED)
2625 {
2626 int sizes[N_TQ];
2627 int i;
2628
2629 if (coff_sym_name == (char *) NULL)
2630 {
2631 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored"));
2632 demand_empty_rest_of_line ();
2633 return;
2634 }
2635
2636 for (i = 0; i < N_TQ; i++)
2637 {
2638 SKIP_WHITESPACE ();
2639 sizes[i] = get_absolute_expression ();
2640 if (*input_line_pointer == ',')
2641 ++input_line_pointer;
2642 else
2643 {
2644 if (*input_line_pointer != '\n'
2645 && *input_line_pointer != ';')
2646 as_warn (_("badly formed .size directive"));
2647 break;
2648 }
2649 }
2650
2651 if (i == N_TQ)
2652 --i;
2653
2654 /* The sizes are stored away in reverse order. */
2655 for (; i >= 0; i--)
2656 {
2657 if (coff_type.num_sizes >= N_TQ)
2658 {
2659 as_warn (_("too many .size entries"));
2660 break;
2661 }
2662 coff_type.sizes[coff_type.num_sizes] = sizes[i];
2663 ++coff_type.num_sizes;
2664 }
2665
2666 demand_empty_rest_of_line ();
2667 }
2668
2669 /* Handle the .type directive, which gives the COFF type of the
2670 symbol. */
2671
2672 void
2673 ecoff_directive_type (int ignore ATTRIBUTE_UNUSED)
2674 {
2675 long val;
2676 tq_t *tq_ptr;
2677 tq_t *tq_shft;
2678
2679 if (coff_sym_name == (char *) NULL)
2680 {
2681 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored"));
2682 demand_empty_rest_of_line ();
2683 return;
2684 }
2685
2686 val = get_absolute_expression ();
2687
2688 coff_type.orig_type = BTYPE (val);
2689 coff_type.basic_type = map_coff_types[coff_type.orig_type];
2690
2691 tq_ptr = &coff_type.type_qualifiers[N_TQ];
2692 while (val & ~N_BTMASK)
2693 {
2694 if (tq_ptr == &coff_type.type_qualifiers[0])
2695 {
2696 /* FIXME: We could handle this by setting the continued bit.
2697 There would still be a limit: the .type argument can not
2698 be infinite. */
2699 as_warn (_("the type of %s is too complex; it will be simplified"),
2700 coff_sym_name);
2701 break;
2702 }
2703 if (ISPTR (val))
2704 *--tq_ptr = tq_Ptr;
2705 else if (ISFCN (val))
2706 *--tq_ptr = tq_Proc;
2707 else if (ISARY (val))
2708 *--tq_ptr = tq_Array;
2709 else
2710 as_fatal (_("Unrecognized .type argument"));
2711
2712 val = DECREF (val);
2713 }
2714
2715 tq_shft = &coff_type.type_qualifiers[0];
2716 while (tq_ptr != &coff_type.type_qualifiers[N_TQ])
2717 *tq_shft++ = *tq_ptr++;
2718
2719 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc)
2720 {
2721 /* If this is a function, ignore it, so that we don't get two
2722 entries (one from the .ent, and one for the .def that
2723 precedes it). Save the type information so that the end
2724 block can properly add it after the begin block index. For
2725 MIPS knows what reason, we must strip off the function type
2726 at this point. */
2727 coff_is_function = 1;
2728 tq_shft[-1] = tq_Nil;
2729 }
2730
2731 while (tq_shft != &coff_type.type_qualifiers[N_TQ])
2732 *tq_shft++ = tq_Nil;
2733
2734 demand_empty_rest_of_line ();
2735 }
2736
2737 /* Handle the .tag directive, which gives the name of a structure,
2738 union or enum. */
2739
2740 void
2741 ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED)
2742 {
2743 char *name;
2744 char name_end;
2745
2746 if (coff_sym_name == (char *) NULL)
2747 {
2748 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored"));
2749 demand_empty_rest_of_line ();
2750 return;
2751 }
2752
2753 name = input_line_pointer;
2754 name_end = get_symbol_end ();
2755
2756 coff_tag = xstrdup (name);
2757
2758 *input_line_pointer = name_end;
2759
2760 demand_empty_rest_of_line ();
2761 }
2762
2763 /* Handle the .val directive, which gives the value of the symbol. It
2764 may be the name of a static or global symbol. */
2765
2766 void
2767 ecoff_directive_val (int ignore ATTRIBUTE_UNUSED)
2768 {
2769 expressionS exp;
2770
2771 if (coff_sym_name == (char *) NULL)
2772 {
2773 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored"));
2774 demand_empty_rest_of_line ();
2775 return;
2776 }
2777
2778 expression (&exp);
2779 if (exp.X_op != O_constant && exp.X_op != O_symbol)
2780 {
2781 as_bad (_(".val expression is too copmlex"));
2782 demand_empty_rest_of_line ();
2783 return;
2784 }
2785
2786 if (exp.X_op == O_constant)
2787 coff_value = exp.X_add_number;
2788 else
2789 {
2790 coff_sym_value = exp.X_add_symbol;
2791 coff_sym_addend = exp.X_add_number;
2792 }
2793
2794 demand_empty_rest_of_line ();
2795 }
2796
2797 /* Handle the .endef directive, which terminates processing of COFF
2798 debugging information for a symbol. */
2799
2800 void
2801 ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED)
2802 {
2803 char *name;
2804 symint_t indx;
2805 localsym_t *sym;
2806
2807 demand_empty_rest_of_line ();
2808
2809 if (coff_sym_name == (char *) NULL)
2810 {
2811 as_warn (_(".endef pseudo-op used before .def; ignored"));
2812 return;
2813 }
2814
2815 name = coff_sym_name;
2816 coff_sym_name = (char *) NULL;
2817
2818 /* If the symbol is a static or external, we have already gotten the
2819 appropriate type and class, so make sure we don't override those
2820 values. This is needed because there are some type and classes
2821 that are not in COFF, such as short data, etc. */
2822 if (coff_sym_value != (symbolS *) NULL)
2823 {
2824 coff_symbol_typ = st_Nil;
2825 coff_storage_class = sc_Nil;
2826 }
2827
2828 coff_type.extra_sizes = coff_tag != (char *) NULL;
2829 if (coff_type.num_dims > 0)
2830 {
2831 int diff = coff_type.num_dims - coff_type.num_sizes;
2832 int i = coff_type.num_dims - 1;
2833 int j;
2834
2835 if (coff_type.num_sizes != 1 || diff < 0)
2836 {
2837 as_warn (_("bad COFF debugging information"));
2838 return;
2839 }
2840
2841 /* If this is an array, make sure the same number of dimensions
2842 and sizes were passed, creating extra sizes for multiply
2843 dimensioned arrays if not passed. */
2844 coff_type.extra_sizes = 0;
2845 if (diff)
2846 {
2847 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1;
2848 while (j >= 0)
2849 {
2850 coff_type.sizes[j] = (((j - diff) >= 0)
2851 ? coff_type.sizes[j - diff]
2852 : 0);
2853 j--;
2854 }
2855
2856 coff_type.num_sizes = i + 1;
2857 for (i--; i >= 0; i--)
2858 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0
2859 ? 0
2860 : (coff_type.sizes[i + 1]
2861 / coff_type.dimensions[i + 1]));
2862 }
2863 }
2864 else if (coff_symbol_typ == st_Member
2865 && coff_type.num_sizes - coff_type.extra_sizes == 1)
2866 {
2867 /* Is this a bitfield? This is indicated by a structure member
2868 having a size field that isn't an array. */
2869 coff_type.bitfield = 1;
2870 }
2871
2872 /* Except for enumeration members & begin/ending of scopes, put the
2873 type word in the aux. symbol table. */
2874 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End)
2875 indx = 0;
2876 else if (coff_inside_enumeration)
2877 indx = cur_file_ptr->void_type;
2878 else
2879 {
2880 if (coff_type.basic_type == bt_Struct
2881 || coff_type.basic_type == bt_Union
2882 || coff_type.basic_type == bt_Enum)
2883 {
2884 if (coff_tag == (char *) NULL)
2885 {
2886 as_warn (_("no tag specified for %s"), name);
2887 return;
2888 }
2889
2890 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL,
2891 coff_type.basic_type);
2892 }
2893
2894 if (coff_is_function)
2895 {
2896 last_func_type_info = coff_type;
2897 last_func_sym_value = coff_sym_value;
2898 return;
2899 }
2900
2901 indx = add_aux_sym_tir (&coff_type,
2902 hash_yes,
2903 &cur_file_ptr->thash_head[0]);
2904 }
2905
2906 /* Do any last minute adjustments that are necessary. */
2907 switch (coff_symbol_typ)
2908 {
2909 default:
2910 break;
2911
2912 /* For the beginning of structs, unions, and enumerations, the
2913 size info needs to be passed in the value field. */
2914 case st_Block:
2915 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes
2916 != 1)
2917 {
2918 as_warn (_("bad COFF debugging information"));
2919 return;
2920 }
2921 else
2922 coff_value = coff_type.sizes[0];
2923
2924 coff_inside_enumeration = (coff_type.orig_type == T_ENUM);
2925 break;
2926
2927 /* For the end of structs, unions, and enumerations, omit the
2928 name which is always ".eos". This needs to be done last, so
2929 that any error reporting above gives the correct name. */
2930 case st_End:
2931 free (name);
2932 name = (char *) NULL;
2933 coff_value = 0;
2934 coff_inside_enumeration = 0;
2935 break;
2936
2937 /* Members of structures and unions that aren't bitfields, need
2938 to adjust the value from a byte offset to a bit offset.
2939 Members of enumerations do not have the value adjusted, and
2940 can be distinguished by indx == indexNil. For enumerations,
2941 update the maximum enumeration value. */
2942 case st_Member:
2943 if (! coff_type.bitfield && ! coff_inside_enumeration)
2944 coff_value *= 8;
2945
2946 break;
2947 }
2948
2949 /* Add the symbol. */
2950 sym = add_ecoff_symbol (name,
2951 coff_symbol_typ,
2952 coff_storage_class,
2953 coff_sym_value,
2954 coff_sym_addend,
2955 (symint_t) coff_value,
2956 indx);
2957
2958 /* deal with struct, union, and enum tags. */
2959 if (coff_symbol_typ == st_Block)
2960 {
2961 /* Create or update the tag information. */
2962 tag_t *tag_ptr = get_tag (name,
2963 sym,
2964 coff_type.basic_type);
2965 forward_t **pf;
2966
2967 /* Remember any forward references. */
2968 for (pf = &sym->forward_ref;
2969 *pf != (forward_t *) NULL;
2970 pf = &(*pf)->next)
2971 ;
2972 *pf = tag_ptr->forward_ref;
2973 tag_ptr->forward_ref = (forward_t *) NULL;
2974 }
2975 }
2976 \f
2977 /* Parse .end directives. */
2978
2979 void
2980 ecoff_directive_end (int ignore ATTRIBUTE_UNUSED)
2981 {
2982 char *name;
2983 char name_end;
2984 symbolS *ent;
2985
2986 if (cur_file_ptr == (efdr_t *) NULL)
2987 {
2988 as_warn (_(".end directive without a preceding .file directive"));
2989 demand_empty_rest_of_line ();
2990 return;
2991 }
2992
2993 if (cur_proc_ptr == (proc_t *) NULL)
2994 {
2995 as_warn (_(".end directive without a preceding .ent directive"));
2996 demand_empty_rest_of_line ();
2997 return;
2998 }
2999
3000 name = input_line_pointer;
3001 name_end = get_symbol_end ();
3002
3003 if (name == input_line_pointer)
3004 {
3005 as_warn (_(".end directive has no name"));
3006 *input_line_pointer = name_end;
3007 demand_empty_rest_of_line ();
3008 return;
3009 }
3010
3011 /* The value is the distance between the .end directive and the
3012 corresponding symbol. We create a fake symbol to hold the
3013 current location, and put in the offset when we write out the
3014 symbol. */
3015 ent = symbol_find (name);
3016 if (ent == (symbolS *) NULL)
3017 as_warn (_(".end directive names unknown symbol"));
3018 else
3019 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text,
3020 symbol_new ("L0\001", now_seg,
3021 (valueT) frag_now_fix (),
3022 frag_now),
3023 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
3024
3025 cur_proc_ptr = (proc_t *) NULL;
3026
3027 *input_line_pointer = name_end;
3028 demand_empty_rest_of_line ();
3029 }
3030 \f
3031 /* Parse .ent directives. */
3032
3033 void
3034 ecoff_directive_ent (int ignore ATTRIBUTE_UNUSED)
3035 {
3036 char *name;
3037 char name_end;
3038
3039 if (cur_file_ptr == (efdr_t *) NULL)
3040 add_file ((const char *) NULL, 0, 1);
3041
3042 if (cur_proc_ptr != (proc_t *) NULL)
3043 {
3044 as_warn (_("second .ent directive found before .end directive"));
3045 demand_empty_rest_of_line ();
3046 return;
3047 }
3048
3049 name = input_line_pointer;
3050 name_end = get_symbol_end ();
3051
3052 if (name == input_line_pointer)
3053 {
3054 as_warn (_(".ent directive has no name"));
3055 *input_line_pointer = name_end;
3056 demand_empty_rest_of_line ();
3057 return;
3058 }
3059
3060 add_procedure (name);
3061
3062 *input_line_pointer = name_end;
3063
3064 /* The .ent directive is sometimes followed by a number. I'm not
3065 really sure what the number means. I don't see any way to store
3066 the information in the PDR. The Irix 4 assembler seems to ignore
3067 the information. */
3068 SKIP_WHITESPACE ();
3069 if (*input_line_pointer == ',')
3070 {
3071 ++input_line_pointer;
3072 SKIP_WHITESPACE ();
3073 }
3074 if (ISDIGIT (*input_line_pointer)
3075 || *input_line_pointer == '-')
3076 (void) get_absolute_expression ();
3077
3078 demand_empty_rest_of_line ();
3079 }
3080 \f
3081 /* Parse .extern directives. */
3082
3083 void
3084 ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED)
3085 {
3086 char *name;
3087 int c;
3088 symbolS *symbolp;
3089 valueT size;
3090
3091 name = input_line_pointer;
3092 c = get_symbol_end ();
3093 symbolp = symbol_find_or_make (name);
3094 *input_line_pointer = c;
3095
3096 S_SET_EXTERNAL (symbolp);
3097
3098 if (*input_line_pointer == ',')
3099 ++input_line_pointer;
3100 size = get_absolute_expression ();
3101
3102 symbol_get_obj (symbolp)->ecoff_extern_size = size;
3103 }
3104 \f
3105 /* Parse .file directives. */
3106
3107 void
3108 ecoff_directive_file (int ignore ATTRIBUTE_UNUSED)
3109 {
3110 int indx;
3111 char *name;
3112 int len;
3113
3114 if (cur_proc_ptr != (proc_t *) NULL)
3115 {
3116 as_warn (_("no way to handle .file within .ent/.end section"));
3117 demand_empty_rest_of_line ();
3118 return;
3119 }
3120
3121 indx = (int) get_absolute_expression ();
3122
3123 /* FIXME: we don't have to save the name here. */
3124 name = demand_copy_C_string (&len);
3125
3126 add_file (name, indx - 1, 0);
3127
3128 demand_empty_rest_of_line ();
3129 }
3130 \f
3131 /* Parse .fmask directives. */
3132
3133 void
3134 ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED)
3135 {
3136 long val;
3137
3138 if (cur_proc_ptr == (proc_t *) NULL)
3139 {
3140 as_warn (_(".fmask outside of .ent"));
3141 demand_empty_rest_of_line ();
3142 return;
3143 }
3144
3145 if (get_absolute_expression_and_terminator (&val) != ',')
3146 {
3147 as_warn (_("bad .fmask directive"));
3148 --input_line_pointer;
3149 demand_empty_rest_of_line ();
3150 return;
3151 }
3152
3153 cur_proc_ptr->pdr.fregmask = val;
3154 cur_proc_ptr->pdr.fregoffset = get_absolute_expression ();
3155
3156 demand_empty_rest_of_line ();
3157 }
3158 \f
3159 /* Parse .frame directives. */
3160
3161 void
3162 ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED)
3163 {
3164 long val;
3165
3166 if (cur_proc_ptr == (proc_t *) NULL)
3167 {
3168 as_warn (_(".frame outside of .ent"));
3169 demand_empty_rest_of_line ();
3170 return;
3171 }
3172
3173 cur_proc_ptr->pdr.framereg = tc_get_register (1);
3174
3175 SKIP_WHITESPACE ();
3176 if (*input_line_pointer++ != ','
3177 || get_absolute_expression_and_terminator (&val) != ',')
3178 {
3179 as_warn (_("bad .frame directive"));
3180 --input_line_pointer;
3181 demand_empty_rest_of_line ();
3182 return;
3183 }
3184
3185 cur_proc_ptr->pdr.frameoffset = val;
3186
3187 cur_proc_ptr->pdr.pcreg = tc_get_register (0);
3188
3189 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to
3190 Sandro. I don't yet know where this value should be stored, if
3191 anywhere. Don't call demand_empty_rest_of_line (). */
3192 s_ignore (42);
3193 }
3194 \f
3195 /* Parse .mask directives. */
3196
3197 void
3198 ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED)
3199 {
3200 long val;
3201
3202 if (cur_proc_ptr == (proc_t *) NULL)
3203 {
3204 as_warn (_(".mask outside of .ent"));
3205 demand_empty_rest_of_line ();
3206 return;
3207 }
3208
3209 if (get_absolute_expression_and_terminator (&val) != ',')
3210 {
3211 as_warn (_("bad .mask directive"));
3212 --input_line_pointer;
3213 demand_empty_rest_of_line ();
3214 return;
3215 }
3216
3217 cur_proc_ptr->pdr.regmask = val;
3218 cur_proc_ptr->pdr.regoffset = get_absolute_expression ();
3219
3220 demand_empty_rest_of_line ();
3221 }
3222 \f
3223 /* Parse .loc directives. */
3224
3225 void
3226 ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED)
3227 {
3228 lineno_list_t *list;
3229 symint_t lineno;
3230
3231 if (cur_file_ptr == (efdr_t *) NULL)
3232 {
3233 as_warn (_(".loc before .file"));
3234 demand_empty_rest_of_line ();
3235 return;
3236 }
3237
3238 if (now_seg != text_section)
3239 {
3240 as_warn (_(".loc outside of .text"));
3241 demand_empty_rest_of_line ();
3242 return;
3243 }
3244
3245 /* Skip the file number. */
3246 SKIP_WHITESPACE ();
3247 get_absolute_expression ();
3248 SKIP_WHITESPACE ();
3249
3250 lineno = get_absolute_expression ();
3251
3252 #ifndef NO_LISTING
3253 if (listing)
3254 listing_source_line (lineno);
3255 #endif
3256
3257 /* If we're building stabs, then output a special label rather than
3258 ECOFF line number info. */
3259 if (stabs_seen)
3260 {
3261 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text,
3262 symbol_new ("L0\001", now_seg,
3263 (valueT) frag_now_fix (),
3264 frag_now),
3265 (bfd_vma) 0, 0, lineno);
3266 return;
3267 }
3268
3269 list = allocate_lineno_list ();
3270
3271 list->next = (lineno_list_t *) NULL;
3272 list->file = cur_file_ptr;
3273 list->proc = cur_proc_ptr;
3274 list->frag = frag_now;
3275 list->paddr = frag_now_fix ();
3276 list->lineno = lineno;
3277
3278 /* We don't want to merge files which have line numbers. */
3279 cur_file_ptr->fdr.fMerge = 0;
3280
3281 /* A .loc directive will sometimes appear before a .ent directive,
3282 which means that cur_proc_ptr will be NULL here. Arrange to
3283 patch this up. */
3284 if (cur_proc_ptr == (proc_t *) NULL)
3285 {
3286 lineno_list_t **pl;
3287
3288 pl = &noproc_lineno;
3289 while (*pl != (lineno_list_t *) NULL)
3290 pl = &(*pl)->next;
3291 *pl = list;
3292 }
3293 else
3294 {
3295 last_lineno = list;
3296 *last_lineno_ptr = list;
3297 last_lineno_ptr = &list->next;
3298 }
3299 }
3300
3301 /* The MIPS assembler sometimes inserts nop instructions in the
3302 instruction stream. When this happens, we must patch up the .loc
3303 information so that it points to the instruction after the nop. */
3304
3305 void
3306 ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset)
3307 {
3308 if (last_lineno != NULL
3309 && last_lineno->frag == old_frag
3310 && last_lineno->paddr == old_frag_offset)
3311 {
3312 last_lineno->frag = frag_now;
3313 last_lineno->paddr = frag_now_fix ();
3314 }
3315 }
3316 \f
3317 /* Make sure the @stabs symbol is emitted. */
3318
3319 static void
3320 mark_stabs (int ignore ATTRIBUTE_UNUSED)
3321 {
3322 if (! stabs_seen)
3323 {
3324 /* Add a dummy @stabs dymbol. */
3325 stabs_seen = 1;
3326 (void) add_ecoff_symbol (stabs_symbol, stNil, scInfo,
3327 (symbolS *) NULL,
3328 (bfd_vma) 0, (symint_t) -1,
3329 ECOFF_MARK_STAB (0));
3330 }
3331 }
3332 \f
3333 /* Parse .weakext directives. */
3334 #ifndef TC_MIPS
3335 /* For TC_MIPS use the version in tc-mips.c. */
3336 void
3337 ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED)
3338 {
3339 char *name;
3340 int c;
3341 symbolS *symbolP;
3342 expressionS exp;
3343
3344 name = input_line_pointer;
3345 c = get_symbol_end ();
3346 symbolP = symbol_find_or_make (name);
3347 *input_line_pointer = c;
3348
3349 SKIP_WHITESPACE ();
3350
3351 if (*input_line_pointer == ',')
3352 {
3353 if (S_IS_DEFINED (symbolP))
3354 {
3355 as_bad (_("symbol `%s' is already defined"),
3356 S_GET_NAME (symbolP));
3357 ignore_rest_of_line ();
3358 return;
3359 }
3360
3361 ++input_line_pointer;
3362 SKIP_WHITESPACE ();
3363 if (! is_end_of_line[(unsigned char) *input_line_pointer])
3364 {
3365 expression (&exp);
3366 if (exp.X_op != O_symbol)
3367 {
3368 as_bad (_("bad .weakext directive"));
3369 ignore_rest_of_line ();
3370 return;
3371 }
3372 symbol_set_value_expression (symbolP, &exp);
3373 }
3374 }
3375
3376 S_SET_WEAK (symbolP);
3377
3378 demand_empty_rest_of_line ();
3379 }
3380 #endif /* not TC_MIPS */
3381 \f
3382 /* Handle .stabs directives. The actual parsing routine is done by a
3383 generic routine. This routine is called via OBJ_PROCESS_STAB.
3384 When this is called, input_line_pointer will be pointing at the
3385 value field of the stab.
3386
3387 .stabs directives have five fields:
3388 "string" a string, encoding the type information.
3389 code a numeric code, defined in <stab.h>
3390 0 a zero
3391 desc a zero or line number
3392 value a numeric value or an address.
3393
3394 If the value is relocatable, we transform this into:
3395 iss points as an index into string space
3396 value value from lookup of the name
3397 st st from lookup of the name
3398 sc sc from lookup of the name
3399 index code|CODE_MASK
3400
3401 If the value is not relocatable, we transform this into:
3402 iss points as an index into string space
3403 value value
3404 st st_Nil
3405 sc sc_Nil
3406 index code|CODE_MASK
3407
3408 .stabn directives have four fields (string is null):
3409 code a numeric code, defined in <stab.h>
3410 0 a zero
3411 desc a zero or a line number
3412 value a numeric value or an address. */
3413
3414 void
3415 ecoff_stab (segT sec ATTRIBUTE_UNUSED,
3416 int what,
3417 const char *string,
3418 int type,
3419 int other,
3420 int desc)
3421 {
3422 efdr_t *save_file_ptr = cur_file_ptr;
3423 symbolS *sym;
3424 symint_t value;
3425 bfd_vma addend;
3426 st_t st;
3427 sc_t sc;
3428 symint_t indx;
3429 localsym_t *hold = NULL;
3430
3431 ecoff_debugging_seen = 1;
3432
3433 /* We don't handle .stabd. */
3434 if (what != 's' && what != 'n')
3435 {
3436 as_bad (_(".stab%c is not supported"), what);
3437 return;
3438 }
3439
3440 /* A .stabn uses a null name, not an empty string. */
3441 if (what == 'n')
3442 string = NULL;
3443
3444 /* We ignore the other field. */
3445 if (other != 0)
3446 as_warn (_(".stab%c: ignoring non-zero other field"), what);
3447
3448 /* Make sure we have a current file. */
3449 if (cur_file_ptr == (efdr_t *) NULL)
3450 {
3451 add_file ((const char *) NULL, 0, 1);
3452 save_file_ptr = cur_file_ptr;
3453 }
3454
3455 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
3456 signal to gdb. */
3457 if (stabs_seen == 0)
3458 mark_stabs (0);
3459
3460 /* Line number stabs are handled differently, since they have two
3461 values, the line number and the address of the label. We use the
3462 index field (aka desc) to hold the line number, and the value
3463 field to hold the address. The symbol type is st_Label, which
3464 should be different from the other stabs, so that gdb can
3465 recognize it. */
3466 if (type == N_SLINE)
3467 {
3468 SYMR dummy_symr;
3469 char *name;
3470 char name_end;
3471
3472 #ifndef NO_LISTING
3473 if (listing)
3474 listing_source_line ((unsigned int) desc);
3475 #endif
3476
3477 dummy_symr.index = desc;
3478 if (dummy_symr.index != desc)
3479 {
3480 as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"),
3481 desc, what);
3482 return;
3483 }
3484
3485 name = input_line_pointer;
3486 name_end = get_symbol_end ();
3487
3488 sym = symbol_find_or_make (name);
3489 *input_line_pointer = name_end;
3490
3491 value = 0;
3492 addend = 0;
3493 st = st_Label;
3494 sc = sc_Text;
3495 indx = desc;
3496 }
3497 else
3498 {
3499 #ifndef NO_LISTING
3500 if (listing && (type == N_SO || type == N_SOL))
3501 listing_source_file (string);
3502 #endif
3503
3504 if (ISDIGIT (*input_line_pointer)
3505 || *input_line_pointer == '-'
3506 || *input_line_pointer == '+')
3507 {
3508 st = st_Nil;
3509 sc = sc_Nil;
3510 sym = (symbolS *) NULL;
3511 value = get_absolute_expression ();
3512 addend = 0;
3513 }
3514 else if (! is_name_beginner ((unsigned char) *input_line_pointer))
3515 {
3516 as_warn (_("illegal .stab%c directive, bad character"), what);
3517 return;
3518 }
3519 else
3520 {
3521 expressionS exp;
3522
3523 sc = sc_Nil;
3524 st = st_Nil;
3525
3526 expression (&exp);
3527 if (exp.X_op == O_constant)
3528 {
3529 sym = NULL;
3530 value = exp.X_add_number;
3531 addend = 0;
3532 }
3533 else if (exp.X_op == O_symbol)
3534 {
3535 sym = exp.X_add_symbol;
3536 value = 0;
3537 addend = exp.X_add_number;
3538 }
3539 else
3540 {
3541 sym = make_expr_symbol (&exp);
3542 value = 0;
3543 addend = 0;
3544 }
3545 }
3546
3547 indx = ECOFF_MARK_STAB (type);
3548 }
3549
3550 /* Don't store the stabs symbol we are creating as the type of the
3551 ECOFF symbol. We want to compute the type of the ECOFF symbol
3552 independently. */
3553 if (sym != (symbolS *) NULL)
3554 hold = symbol_get_obj (sym)->ecoff_symbol;
3555
3556 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx);
3557
3558 if (sym != (symbolS *) NULL)
3559 symbol_get_obj (sym)->ecoff_symbol = hold;
3560
3561 /* Restore normal file type. */
3562 cur_file_ptr = save_file_ptr;
3563 }
3564 \f
3565 /* Frob an ECOFF symbol. Small common symbols go into a special
3566 .scommon section rather than bfd_com_section. */
3567
3568 void
3569 ecoff_frob_symbol (symbolS *sym)
3570 {
3571 if (S_IS_COMMON (sym)
3572 && S_GET_VALUE (sym) > 0
3573 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput))
3574 {
3575 static asection scom_section;
3576 static asymbol scom_symbol;
3577
3578 /* We must construct a fake section similar to bfd_com_section
3579 but with the name .scommon. */
3580 if (scom_section.name == NULL)
3581 {
3582 scom_section = bfd_com_section;
3583 scom_section.name = ".scommon";
3584 scom_section.output_section = &scom_section;
3585 scom_section.symbol = &scom_symbol;
3586 scom_section.symbol_ptr_ptr = &scom_section.symbol;
3587 scom_symbol = *bfd_com_section.symbol;
3588 scom_symbol.name = ".scommon";
3589 scom_symbol.section = &scom_section;
3590 }
3591 S_SET_SEGMENT (sym, &scom_section);
3592 }
3593
3594 /* Double check weak symbols. */
3595 if (S_IS_WEAK (sym))
3596 {
3597 if (S_IS_COMMON (sym))
3598 as_bad (_("symbol `%s' can not be both weak and common"),
3599 S_GET_NAME (sym));
3600 }
3601 }
3602 \f
3603 /* Add bytes to the symbolic information buffer. */
3604
3605 static char *
3606 ecoff_add_bytes (char **buf,
3607 char **bufend,
3608 char *bufptr,
3609 unsigned long need)
3610 {
3611 unsigned long at;
3612 unsigned long want;
3613
3614 at = bufptr - *buf;
3615 need -= *bufend - bufptr;
3616 if (need < PAGE_SIZE)
3617 need = PAGE_SIZE;
3618 want = (*bufend - *buf) + need;
3619 *buf = xrealloc (*buf, want);
3620 *bufend = *buf + want;
3621 return *buf + at;
3622 }
3623
3624 /* Adjust the symbolic information buffer to the alignment required
3625 for the ECOFF target debugging information. */
3626
3627 static unsigned long
3628 ecoff_padding_adjust (const struct ecoff_debug_swap *backend,
3629 char **buf,
3630 char **bufend,
3631 unsigned long offset,
3632 char **bufptrptr)
3633 {
3634 bfd_size_type align;
3635
3636 align = backend->debug_align;
3637 if ((offset & (align - 1)) != 0)
3638 {
3639 unsigned long add;
3640
3641 add = align - (offset & (align - 1));
3642 if ((unsigned long) (*bufend - (*buf + offset)) < add)
3643 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add);
3644 memset (*buf + offset, 0, add);
3645 offset += add;
3646 if (bufptrptr != (char **) NULL)
3647 *bufptrptr = *buf + offset;
3648 }
3649
3650 return offset;
3651 }
3652
3653 /* Build the line number information. */
3654
3655 static unsigned long
3656 ecoff_build_lineno (const struct ecoff_debug_swap *backend,
3657 char **buf,
3658 char **bufend,
3659 unsigned long offset,
3660 long *linecntptr)
3661 {
3662 char *bufptr;
3663 register lineno_list_t *l;
3664 lineno_list_t *last;
3665 efdr_t *file;
3666 proc_t *proc;
3667 unsigned long c;
3668 long iline;
3669 long totcount;
3670 lineno_list_t first;
3671 lineno_list_t *local_first_lineno = first_lineno;
3672
3673 if (linecntptr != (long *) NULL)
3674 *linecntptr = 0;
3675
3676 bufptr = *buf + offset;
3677
3678 file = (efdr_t *) NULL;
3679 proc = (proc_t *) NULL;
3680 last = (lineno_list_t *) NULL;
3681 c = offset;
3682 iline = 0;
3683 totcount = 0;
3684
3685 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to
3686 remove this code. */
3687 /* For some reason the address of the first procedure is ignored
3688 when reading line numbers. This doesn't matter if the address of
3689 the first procedure is 0, but when gcc is generating MIPS
3690 embedded PIC code, it will put strings in the .text section
3691 before the first procedure. We cope by inserting a dummy line if
3692 the address of the first procedure is not 0. Hopefully this
3693 won't screw things up too badly.
3694
3695 Don't do this for ECOFF assembly source line numbers. They work
3696 without this extra attention. */
3697 if (debug_type != DEBUG_ECOFF
3698 && first_proc_ptr != (proc_t *) NULL
3699 && local_first_lineno != (lineno_list_t *) NULL
3700 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym)
3701 + bfd_get_section_vma (stdoutput,
3702 S_GET_SEGMENT (first_proc_ptr->sym->as_sym)))
3703 != 0))
3704 {
3705 first.file = local_first_lineno->file;
3706 first.proc = local_first_lineno->proc;
3707 first.frag = &zero_address_frag;
3708 first.paddr = 0;
3709 first.lineno = 0;
3710
3711 first.next = local_first_lineno;
3712 local_first_lineno = &first;
3713 }
3714
3715 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next)
3716 {
3717 long count;
3718 long delta;
3719
3720 /* Get the offset to the memory address of the next line number
3721 (in words). Do this first, so that we can skip ahead to the
3722 next useful line number entry. */
3723 if (l->next == (lineno_list_t *) NULL)
3724 {
3725 /* We want a count of zero, but it will be decremented
3726 before it is used. */
3727 count = 1;
3728 }
3729 else if (l->next->frag->fr_address + l->next->paddr
3730 > l->frag->fr_address + l->paddr)
3731 {
3732 count = ((l->next->frag->fr_address + l->next->paddr
3733 - (l->frag->fr_address + l->paddr))
3734 >> 2);
3735 }
3736 else
3737 {
3738 /* Don't change last, so we still get the right delta. */
3739 continue;
3740 }
3741
3742 if (l->file != file || l->proc != proc)
3743 {
3744 if (l->proc != proc && proc != (proc_t *) NULL)
3745 proc->pdr.lnHigh = last->lineno;
3746 if (l->file != file && file != (efdr_t *) NULL)
3747 {
3748 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3749 file->fdr.cline = totcount + count;
3750 if (linecntptr != (long *) NULL)
3751 *linecntptr += totcount + count;
3752 totcount = 0;
3753 }
3754
3755 if (l->file != file)
3756 {
3757 efdr_t *last_file = file;
3758
3759 file = l->file;
3760 if (last_file != (efdr_t *) NULL)
3761 file->fdr.ilineBase
3762 = last_file->fdr.ilineBase + last_file->fdr.cline;
3763 else
3764 file->fdr.ilineBase = 0;
3765 file->fdr.cbLineOffset = c;
3766 }
3767 if (l->proc != proc)
3768 {
3769 proc = l->proc;
3770 if (proc != (proc_t *) NULL)
3771 {
3772 proc->pdr.lnLow = l->lineno;
3773 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset;
3774 proc->pdr.iline = totcount;
3775 }
3776 }
3777
3778 last = (lineno_list_t *) NULL;
3779 }
3780
3781 totcount += count;
3782
3783 /* Get the offset to this line number. */
3784 if (last == (lineno_list_t *) NULL)
3785 delta = 0;
3786 else
3787 delta = l->lineno - last->lineno;
3788
3789 /* Put in the offset to this line number. */
3790 while (delta != 0)
3791 {
3792 int setcount;
3793
3794 /* 1 is added to each count read. */
3795 --count;
3796 /* We can only adjust the word count by up to 15 words at a
3797 time. */
3798 if (count <= 0x0f)
3799 {
3800 setcount = count;
3801 count = 0;
3802 }
3803 else
3804 {
3805 setcount = 0x0f;
3806 count -= 0x0f;
3807 }
3808 if (delta >= -7 && delta <= 7)
3809 {
3810 if (bufptr >= *bufend)
3811 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3812 *bufptr++ = setcount + (delta << 4);
3813 delta = 0;
3814 ++c;
3815 }
3816 else
3817 {
3818 int set;
3819
3820 if (*bufend - bufptr < 3)
3821 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3);
3822 *bufptr++ = setcount + (8 << 4);
3823 if (delta < -0x8000)
3824 {
3825 set = -0x8000;
3826 delta += 0x8000;
3827 }
3828 else if (delta > 0x7fff)
3829 {
3830 set = 0x7fff;
3831 delta -= 0x7fff;
3832 }
3833 else
3834 {
3835 set = delta;
3836 delta = 0;
3837 }
3838 *bufptr++ = set >> 8;
3839 *bufptr++ = set & 0xffff;
3840 c += 3;
3841 }
3842 }
3843
3844 /* Finish adjusting the count. */
3845 while (count > 0)
3846 {
3847 if (bufptr >= *bufend)
3848 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3849 /* 1 is added to each count read. */
3850 --count;
3851 if (count > 0x0f)
3852 {
3853 *bufptr++ = 0x0f;
3854 count -= 0x0f;
3855 }
3856 else
3857 {
3858 *bufptr++ = count;
3859 count = 0;
3860 }
3861 ++c;
3862 }
3863
3864 ++iline;
3865 last = l;
3866 }
3867
3868 if (proc != (proc_t *) NULL)
3869 proc->pdr.lnHigh = last->lineno;
3870 if (file != (efdr_t *) NULL)
3871 {
3872 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3873 file->fdr.cline = totcount;
3874 }
3875
3876 if (linecntptr != (long *) NULL)
3877 *linecntptr += totcount;
3878
3879 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr);
3880
3881 return c;
3882 }
3883
3884 /* Build and swap out the symbols. */
3885
3886 static unsigned long
3887 ecoff_build_symbols (const struct ecoff_debug_swap *backend,
3888 char **buf,
3889 char **bufend,
3890 unsigned long offset)
3891 {
3892 const bfd_size_type external_sym_size = backend->external_sym_size;
3893 void (* const swap_sym_out) (bfd *, const SYMR *, PTR)
3894 = backend->swap_sym_out;
3895 char *sym_out;
3896 long isym;
3897 vlinks_t *file_link;
3898
3899 sym_out = *buf + offset;
3900
3901 isym = 0;
3902
3903 /* The symbols are stored by file. */
3904 for (file_link = file_desc.first;
3905 file_link != (vlinks_t *) NULL;
3906 file_link = file_link->next)
3907 {
3908 int ifilesym;
3909 int fil_cnt;
3910 efdr_t *fil_ptr;
3911 efdr_t *fil_end;
3912
3913 if (file_link->next == (vlinks_t *) NULL)
3914 fil_cnt = file_desc.objects_last_page;
3915 else
3916 fil_cnt = file_desc.objects_per_page;
3917 fil_ptr = file_link->datum->file;
3918 fil_end = fil_ptr + fil_cnt;
3919 for (; fil_ptr < fil_end; fil_ptr++)
3920 {
3921 vlinks_t *sym_link;
3922
3923 fil_ptr->fdr.isymBase = isym;
3924 ifilesym = isym;
3925 for (sym_link = fil_ptr->symbols.first;
3926 sym_link != (vlinks_t *) NULL;
3927 sym_link = sym_link->next)
3928 {
3929 int sym_cnt;
3930 localsym_t *sym_ptr;
3931 localsym_t *sym_end;
3932
3933 if (sym_link->next == (vlinks_t *) NULL)
3934 sym_cnt = fil_ptr->symbols.objects_last_page;
3935 else
3936 sym_cnt = fil_ptr->symbols.objects_per_page;
3937 sym_ptr = sym_link->datum->sym;
3938 sym_end = sym_ptr + sym_cnt;
3939 for (; sym_ptr < sym_end; sym_ptr++)
3940 {
3941 int local;
3942 symbolS *as_sym;
3943 forward_t *f;
3944
3945 know (sym_ptr->file_ptr == fil_ptr);
3946
3947 /* If there is no associated gas symbol, then this
3948 is a pure debugging symbol. We have already
3949 added the name (if any) to fil_ptr->strings.
3950 Otherwise we must decide whether this is an
3951 external or a local symbol (actually, it may be
3952 both if the local provides additional debugging
3953 information for the external). */
3954 local = 1;
3955 as_sym = sym_ptr->as_sym;
3956 if (as_sym != (symbolS *) NULL)
3957 {
3958 symint_t indx;
3959
3960 /* The value of a block start symbol is the
3961 offset from the start of the procedure. For
3962 other symbols we just use the gas value (but
3963 we must offset it by the vma of the section,
3964 just as BFD does, because BFD will not see
3965 this value). */
3966 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block
3967 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text)
3968 {
3969 symbolS *begin_sym;
3970
3971 know (sym_ptr->proc_ptr != (proc_t *) NULL);
3972 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
3973 if (S_GET_SEGMENT (as_sym)
3974 != S_GET_SEGMENT (begin_sym))
3975 as_warn (_(".begin/.bend in different segments"));
3976 sym_ptr->ecoff_sym.asym.value =
3977 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
3978 }
3979 else
3980 sym_ptr->ecoff_sym.asym.value =
3981 (S_GET_VALUE (as_sym)
3982 + bfd_get_section_vma (stdoutput,
3983 S_GET_SEGMENT (as_sym))
3984 + sym_ptr->addend);
3985
3986 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym);
3987
3988 /* Set st_Proc to st_StaticProc for local
3989 functions. */
3990 if (sym_ptr->ecoff_sym.asym.st == st_Proc
3991 && S_IS_DEFINED (as_sym)
3992 && ! S_IS_EXTERNAL (as_sym)
3993 && ! S_IS_WEAK (as_sym))
3994 sym_ptr->ecoff_sym.asym.st = st_StaticProc;
3995
3996 /* Get the type and storage class based on where
3997 the symbol actually wound up. Traditionally,
3998 N_LBRAC and N_RBRAC are *not* relocated. */
3999 indx = sym_ptr->ecoff_sym.asym.index;
4000 if (sym_ptr->ecoff_sym.asym.st == st_Nil
4001 && sym_ptr->ecoff_sym.asym.sc == sc_Nil
4002 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4003 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC)
4004 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC))))
4005 {
4006 segT seg;
4007 const char *segname;
4008 st_t st;
4009 sc_t sc;
4010
4011 seg = S_GET_SEGMENT (as_sym);
4012 segname = segment_name (seg);
4013
4014 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4015 && (S_IS_EXTERNAL (as_sym)
4016 || S_IS_WEAK (as_sym)
4017 || ! S_IS_DEFINED (as_sym)))
4018 {
4019 if ((symbol_get_bfdsym (as_sym)->flags
4020 & BSF_FUNCTION) != 0)
4021 st = st_Proc;
4022 else
4023 st = st_Global;
4024 }
4025 else if (seg == text_section)
4026 st = st_Label;
4027 else
4028 st = st_Static;
4029
4030 if (! S_IS_DEFINED (as_sym))
4031 {
4032 valueT s;
4033
4034 s = symbol_get_obj (as_sym)->ecoff_extern_size;
4035 if (s == 0
4036 || s > bfd_get_gp_size (stdoutput))
4037 sc = sc_Undefined;
4038 else
4039 {
4040 sc = sc_SUndefined;
4041 sym_ptr->ecoff_sym.asym.value = s;
4042 }
4043 #ifdef S_SET_SIZE
4044 S_SET_SIZE (as_sym, s);
4045 #endif
4046 }
4047 else if (S_IS_COMMON (as_sym))
4048 {
4049 if (S_GET_VALUE (as_sym) > 0
4050 && (S_GET_VALUE (as_sym)
4051 <= bfd_get_gp_size (stdoutput)))
4052 sc = sc_SCommon;
4053 else
4054 sc = sc_Common;
4055 }
4056 else if (seg == text_section)
4057 sc = sc_Text;
4058 else if (seg == data_section)
4059 sc = sc_Data;
4060 else if (strcmp (segname, ".rdata") == 0
4061 || strcmp (segname, ".rodata") == 0)
4062 sc = sc_RData;
4063 else if (strcmp (segname, ".sdata") == 0)
4064 sc = sc_SData;
4065 else if (seg == bss_section)
4066 sc = sc_Bss;
4067 else if (strcmp (segname, ".sbss") == 0)
4068 sc = sc_SBss;
4069 else if (seg == &bfd_abs_section)
4070 sc = sc_Abs;
4071 else
4072 {
4073 /* This must be a user named section.
4074 This is not possible in ECOFF, but it
4075 is in ELF. */
4076 sc = sc_Data;
4077 }
4078
4079 sym_ptr->ecoff_sym.asym.st = (int) st;
4080 sym_ptr->ecoff_sym.asym.sc = (int) sc;
4081 }
4082
4083 /* This is just an external symbol if it is
4084 outside a procedure and it has a type.
4085 FIXME: g++ will generate symbols which have
4086 different names in the debugging information
4087 than the actual symbol. Should we handle
4088 them here? */
4089 if ((S_IS_EXTERNAL (as_sym)
4090 || S_IS_WEAK (as_sym)
4091 || ! S_IS_DEFINED (as_sym))
4092 && sym_ptr->proc_ptr == (proc_t *) NULL
4093 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil
4094 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym))
4095 local = 0;
4096
4097 /* This is just an external symbol if it is a
4098 common symbol. */
4099 if (S_IS_COMMON (as_sym))
4100 local = 0;
4101
4102 /* If an st_end symbol has an associated gas
4103 symbol, then it is a local label created for
4104 a .bend or .end directive. Stabs line
4105 numbers will have \001 in the names. */
4106 if (local
4107 && sym_ptr->ecoff_sym.asym.st != st_End
4108 && strchr (sym_ptr->name, '\001') == 0)
4109 sym_ptr->ecoff_sym.asym.iss =
4110 add_string (&fil_ptr->strings,
4111 fil_ptr->str_hash,
4112 sym_ptr->name,
4113 (shash_t **) NULL);
4114 }
4115
4116 /* We now know the index of this symbol; fill in
4117 locations that have been waiting for that
4118 information. */
4119 if (sym_ptr->begin_ptr != (localsym_t *) NULL)
4120 {
4121 localsym_t *begin_ptr;
4122 st_t begin_type;
4123
4124 know (local);
4125 begin_ptr = sym_ptr->begin_ptr;
4126 know (begin_ptr->sym_index != -1);
4127 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index;
4128 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4129 sym_ptr->ecoff_sym.asym.iss =
4130 begin_ptr->ecoff_sym.asym.iss;
4131
4132 begin_type = begin_ptr->ecoff_sym.asym.st;
4133 if (begin_type == st_File
4134 || begin_type == st_Block)
4135 {
4136 begin_ptr->ecoff_sym.asym.index =
4137 isym - ifilesym + 1;
4138 (*swap_sym_out) (stdoutput,
4139 &begin_ptr->ecoff_sym.asym,
4140 (*buf
4141 + offset
4142 + (begin_ptr->sym_index
4143 * external_sym_size)));
4144 }
4145 else
4146 {
4147 know (begin_ptr->index_ptr != (aux_t *) NULL);
4148 begin_ptr->index_ptr->data.isym =
4149 isym - ifilesym + 1;
4150 }
4151
4152 /* The value of the symbol marking the end of a
4153 procedure is the size of the procedure. The
4154 value of the symbol marking the end of a
4155 block is the offset from the start of the
4156 procedure to the block. */
4157 if (begin_type == st_Proc
4158 || begin_type == st_StaticProc)
4159 {
4160 know (as_sym != (symbolS *) NULL);
4161 know (begin_ptr->as_sym != (symbolS *) NULL);
4162 if (S_GET_SEGMENT (as_sym)
4163 != S_GET_SEGMENT (begin_ptr->as_sym))
4164 as_warn (_(".begin/.bend in different segments"));
4165 sym_ptr->ecoff_sym.asym.value =
4166 (S_GET_VALUE (as_sym)
4167 - S_GET_VALUE (begin_ptr->as_sym));
4168
4169 /* If the size is odd, this is probably a
4170 mips16 function; force it to be even. */
4171 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0)
4172 ++sym_ptr->ecoff_sym.asym.value;
4173
4174 #ifdef S_SET_SIZE
4175 S_SET_SIZE (begin_ptr->as_sym,
4176 sym_ptr->ecoff_sym.asym.value);
4177 #endif
4178 }
4179 else if (begin_type == st_Block
4180 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4181 {
4182 symbolS *begin_sym;
4183
4184 know (as_sym != (symbolS *) NULL);
4185 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4186 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4187 if (S_GET_SEGMENT (as_sym)
4188 != S_GET_SEGMENT (begin_sym))
4189 as_warn (_(".begin/.bend in different segments"));
4190 sym_ptr->ecoff_sym.asym.value =
4191 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4192 }
4193 }
4194
4195 for (f = sym_ptr->forward_ref;
4196 f != (forward_t *) NULL;
4197 f = f->next)
4198 {
4199 know (local);
4200 f->ifd_ptr->data.isym = fil_ptr->file_index;
4201 f->index_ptr->data.rndx.index = isym - ifilesym;
4202 }
4203
4204 if (local)
4205 {
4206 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size)
4207 sym_out = ecoff_add_bytes (buf, bufend,
4208 sym_out,
4209 external_sym_size);
4210 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym,
4211 sym_out);
4212 sym_out += external_sym_size;
4213
4214 sym_ptr->sym_index = isym;
4215
4216 if (sym_ptr->proc_ptr != (proc_t *) NULL
4217 && sym_ptr->proc_ptr->sym == sym_ptr)
4218 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym;
4219
4220 ++isym;
4221 }
4222
4223 /* Record the local symbol index and file number in
4224 case this is an external symbol. Note that this
4225 destroys the asym.index field. */
4226 if (as_sym != (symbolS *) NULL
4227 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr)
4228 {
4229 if ((sym_ptr->ecoff_sym.asym.st == st_Proc
4230 || sym_ptr->ecoff_sym.asym.st == st_StaticProc)
4231 && local)
4232 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1;
4233 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index;
4234
4235 /* Don't try to merge an FDR which has an
4236 external symbol attached to it. */
4237 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym))
4238 fil_ptr->fdr.fMerge = 0;
4239 }
4240 }
4241 }
4242 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase;
4243 }
4244 }
4245
4246 return offset + isym * external_sym_size;
4247 }
4248
4249 /* Swap out the procedure information. */
4250
4251 static unsigned long
4252 ecoff_build_procs (const struct ecoff_debug_swap *backend,
4253 char **buf,
4254 char **bufend,
4255 unsigned long offset)
4256 {
4257 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4258 void (* const swap_pdr_out) (bfd *, const PDR *, PTR)
4259 = backend->swap_pdr_out;
4260 char *pdr_out;
4261 long iproc;
4262 vlinks_t *file_link;
4263
4264 pdr_out = *buf + offset;
4265
4266 iproc = 0;
4267
4268 /* The procedures are stored by file. */
4269 for (file_link = file_desc.first;
4270 file_link != (vlinks_t *) NULL;
4271 file_link = file_link->next)
4272 {
4273 int fil_cnt;
4274 efdr_t *fil_ptr;
4275 efdr_t *fil_end;
4276
4277 if (file_link->next == (vlinks_t *) NULL)
4278 fil_cnt = file_desc.objects_last_page;
4279 else
4280 fil_cnt = file_desc.objects_per_page;
4281 fil_ptr = file_link->datum->file;
4282 fil_end = fil_ptr + fil_cnt;
4283 for (; fil_ptr < fil_end; fil_ptr++)
4284 {
4285 vlinks_t *proc_link;
4286 int first;
4287
4288 fil_ptr->fdr.ipdFirst = iproc;
4289 first = 1;
4290 for (proc_link = fil_ptr->procs.first;
4291 proc_link != (vlinks_t *) NULL;
4292 proc_link = proc_link->next)
4293 {
4294 int prc_cnt;
4295 proc_t *proc_ptr;
4296 proc_t *proc_end;
4297
4298 if (proc_link->next == (vlinks_t *) NULL)
4299 prc_cnt = fil_ptr->procs.objects_last_page;
4300 else
4301 prc_cnt = fil_ptr->procs.objects_per_page;
4302 proc_ptr = proc_link->datum->proc;
4303 proc_end = proc_ptr + prc_cnt;
4304 for (; proc_ptr < proc_end; proc_ptr++)
4305 {
4306 symbolS *adr_sym;
4307 unsigned long adr;
4308
4309 adr_sym = proc_ptr->sym->as_sym;
4310 adr = (S_GET_VALUE (adr_sym)
4311 + bfd_get_section_vma (stdoutput,
4312 S_GET_SEGMENT (adr_sym)));
4313 if (first)
4314 {
4315 /* This code used to force the adr of the very
4316 first fdr to be 0. However, the native tools
4317 don't do that, and I can't remember why it
4318 used to work that way, so I took it out. */
4319 fil_ptr->fdr.adr = adr;
4320 first = 0;
4321 }
4322 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr;
4323 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size)
4324 pdr_out = ecoff_add_bytes (buf, bufend,
4325 pdr_out,
4326 external_pdr_size);
4327 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out);
4328 pdr_out += external_pdr_size;
4329 ++iproc;
4330 }
4331 }
4332 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst;
4333 }
4334 }
4335
4336 return offset + iproc * external_pdr_size;
4337 }
4338
4339 /* Swap out the aux information. */
4340
4341 static unsigned long
4342 ecoff_build_aux (const struct ecoff_debug_swap *backend,
4343 char **buf,
4344 char **bufend,
4345 unsigned long offset)
4346 {
4347 int bigendian;
4348 union aux_ext *aux_out;
4349 long iaux;
4350 vlinks_t *file_link;
4351
4352 bigendian = bfd_big_endian (stdoutput);
4353
4354 aux_out = (union aux_ext *) (*buf + offset);
4355
4356 iaux = 0;
4357
4358 /* The aux entries are stored by file. */
4359 for (file_link = file_desc.first;
4360 file_link != (vlinks_t *) NULL;
4361 file_link = file_link->next)
4362 {
4363 int fil_cnt;
4364 efdr_t *fil_ptr;
4365 efdr_t *fil_end;
4366
4367 if (file_link->next == (vlinks_t *) NULL)
4368 fil_cnt = file_desc.objects_last_page;
4369 else
4370 fil_cnt = file_desc.objects_per_page;
4371 fil_ptr = file_link->datum->file;
4372 fil_end = fil_ptr + fil_cnt;
4373 for (; fil_ptr < fil_end; fil_ptr++)
4374 {
4375 vlinks_t *aux_link;
4376
4377 fil_ptr->fdr.fBigendian = bigendian;
4378 fil_ptr->fdr.iauxBase = iaux;
4379 for (aux_link = fil_ptr->aux_syms.first;
4380 aux_link != (vlinks_t *) NULL;
4381 aux_link = aux_link->next)
4382 {
4383 int aux_cnt;
4384 aux_t *aux_ptr;
4385 aux_t *aux_end;
4386
4387 if (aux_link->next == (vlinks_t *) NULL)
4388 aux_cnt = fil_ptr->aux_syms.objects_last_page;
4389 else
4390 aux_cnt = fil_ptr->aux_syms.objects_per_page;
4391 aux_ptr = aux_link->datum->aux;
4392 aux_end = aux_ptr + aux_cnt;
4393 for (; aux_ptr < aux_end; aux_ptr++)
4394 {
4395 if ((unsigned long) (*bufend - (char *) aux_out)
4396 < sizeof (union aux_ext))
4397 aux_out = ((union aux_ext *)
4398 ecoff_add_bytes (buf, bufend,
4399 (char *) aux_out,
4400 sizeof (union aux_ext)));
4401 switch (aux_ptr->type)
4402 {
4403 case aux_tir:
4404 (*backend->swap_tir_out) (bigendian,
4405 &aux_ptr->data.ti,
4406 &aux_out->a_ti);
4407 break;
4408 case aux_rndx:
4409 (*backend->swap_rndx_out) (bigendian,
4410 &aux_ptr->data.rndx,
4411 &aux_out->a_rndx);
4412 break;
4413 case aux_dnLow:
4414 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow,
4415 aux_out);
4416 break;
4417 case aux_dnHigh:
4418 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh,
4419 aux_out);
4420 break;
4421 case aux_isym:
4422 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym,
4423 aux_out);
4424 break;
4425 case aux_iss:
4426 AUX_PUT_ISS (bigendian, aux_ptr->data.iss,
4427 aux_out);
4428 break;
4429 case aux_width:
4430 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width,
4431 aux_out);
4432 break;
4433 case aux_count:
4434 AUX_PUT_COUNT (bigendian, aux_ptr->data.count,
4435 aux_out);
4436 break;
4437 }
4438
4439 ++aux_out;
4440 ++iaux;
4441 }
4442 }
4443 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase;
4444 }
4445 }
4446
4447 return ecoff_padding_adjust (backend, buf, bufend,
4448 offset + iaux * sizeof (union aux_ext),
4449 (char **) NULL);
4450 }
4451
4452 /* Copy out the strings from a varray_t. This returns the number of
4453 bytes copied, rather than the new offset. */
4454
4455 static unsigned long
4456 ecoff_build_strings (char **buf,
4457 char **bufend,
4458 unsigned long offset,
4459 varray_t *vp)
4460 {
4461 unsigned long istr;
4462 char *str_out;
4463 vlinks_t *str_link;
4464
4465 str_out = *buf + offset;
4466
4467 istr = 0;
4468
4469 for (str_link = vp->first;
4470 str_link != (vlinks_t *) NULL;
4471 str_link = str_link->next)
4472 {
4473 unsigned long str_cnt;
4474
4475 if (str_link->next == (vlinks_t *) NULL)
4476 str_cnt = vp->objects_last_page;
4477 else
4478 str_cnt = vp->objects_per_page;
4479
4480 if ((unsigned long)(*bufend - str_out) < str_cnt)
4481 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt);
4482
4483 memcpy (str_out, str_link->datum->byte, str_cnt);
4484 str_out += str_cnt;
4485 istr += str_cnt;
4486 }
4487
4488 return istr;
4489 }
4490
4491 /* Dump out the local strings. */
4492
4493 static unsigned long
4494 ecoff_build_ss (const struct ecoff_debug_swap *backend,
4495 char **buf,
4496 char **bufend,
4497 unsigned long offset)
4498 {
4499 long iss;
4500 vlinks_t *file_link;
4501
4502 iss = 0;
4503
4504 for (file_link = file_desc.first;
4505 file_link != (vlinks_t *) NULL;
4506 file_link = file_link->next)
4507 {
4508 int fil_cnt;
4509 efdr_t *fil_ptr;
4510 efdr_t *fil_end;
4511
4512 if (file_link->next == (vlinks_t *) NULL)
4513 fil_cnt = file_desc.objects_last_page;
4514 else
4515 fil_cnt = file_desc.objects_per_page;
4516 fil_ptr = file_link->datum->file;
4517 fil_end = fil_ptr + fil_cnt;
4518 for (; fil_ptr < fil_end; fil_ptr++)
4519 {
4520 long ss_cnt;
4521
4522 fil_ptr->fdr.issBase = iss;
4523 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss,
4524 &fil_ptr->strings);
4525 fil_ptr->fdr.cbSs = ss_cnt;
4526 iss += ss_cnt;
4527 }
4528 }
4529
4530 return ecoff_padding_adjust (backend, buf, bufend, offset + iss,
4531 (char **) NULL);
4532 }
4533
4534 /* Swap out the file descriptors. */
4535
4536 static unsigned long
4537 ecoff_build_fdr (const struct ecoff_debug_swap *backend,
4538 char **buf,
4539 char **bufend,
4540 unsigned long offset)
4541 {
4542 const bfd_size_type external_fdr_size = backend->external_fdr_size;
4543 void (* const swap_fdr_out) (bfd *, const FDR *, PTR)
4544 = backend->swap_fdr_out;
4545 long ifile;
4546 char *fdr_out;
4547 vlinks_t *file_link;
4548
4549 ifile = 0;
4550
4551 fdr_out = *buf + offset;
4552
4553 for (file_link = file_desc.first;
4554 file_link != (vlinks_t *) NULL;
4555 file_link = file_link->next)
4556 {
4557 int fil_cnt;
4558 efdr_t *fil_ptr;
4559 efdr_t *fil_end;
4560
4561 if (file_link->next == (vlinks_t *) NULL)
4562 fil_cnt = file_desc.objects_last_page;
4563 else
4564 fil_cnt = file_desc.objects_per_page;
4565 fil_ptr = file_link->datum->file;
4566 fil_end = fil_ptr + fil_cnt;
4567 for (; fil_ptr < fil_end; fil_ptr++)
4568 {
4569 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size)
4570 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out,
4571 external_fdr_size);
4572 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out);
4573 fdr_out += external_fdr_size;
4574 ++ifile;
4575 }
4576 }
4577
4578 return offset + ifile * external_fdr_size;
4579 }
4580
4581 /* Set up the external symbols. These are supposed to be handled by
4582 the backend. This routine just gets the right information and
4583 calls a backend function to deal with it. */
4584
4585 static void
4586 ecoff_setup_ext (void)
4587 {
4588 register symbolS *sym;
4589
4590 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4591 {
4592 if (symbol_get_obj (sym)->ecoff_symbol == NULL)
4593 continue;
4594
4595 /* If this is a local symbol, then force the fields to zero. */
4596 if (! S_IS_EXTERNAL (sym)
4597 && ! S_IS_WEAK (sym)
4598 && S_IS_DEFINED (sym))
4599 {
4600 struct localsym *lsym;
4601
4602 lsym = symbol_get_obj (sym)->ecoff_symbol;
4603 lsym->ecoff_sym.asym.value = 0;
4604 lsym->ecoff_sym.asym.st = (int) st_Nil;
4605 lsym->ecoff_sym.asym.sc = (int) sc_Nil;
4606 lsym->ecoff_sym.asym.index = indexNil;
4607 }
4608
4609 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym);
4610 }
4611 }
4612
4613 /* Build the ECOFF debugging information. */
4614
4615 unsigned long
4616 ecoff_build_debug (HDRR *hdr,
4617 char **bufp,
4618 const struct ecoff_debug_swap *backend)
4619 {
4620 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4621 tag_t *ptag;
4622 tag_t *ptag_next;
4623 efdr_t *fil_ptr;
4624 int end_warning;
4625 efdr_t *hold_file_ptr;
4626 proc_t *hold_proc_ptr;
4627 symbolS *sym;
4628 char *buf;
4629 char *bufend;
4630 unsigned long offset;
4631
4632 /* Make sure we have a file. */
4633 if (first_file == (efdr_t *) NULL)
4634 add_file ((const char *) NULL, 0, 1);
4635
4636 /* Handle any top level tags. */
4637 for (ptag = top_tag_head->first_tag;
4638 ptag != (tag_t *) NULL;
4639 ptag = ptag_next)
4640 {
4641 if (ptag->forward_ref != (forward_t *) NULL)
4642 add_unknown_tag (ptag);
4643
4644 ptag_next = ptag->same_block;
4645 ptag->hash_ptr->tag_ptr = ptag->same_name;
4646 free_tag (ptag);
4647 }
4648
4649 free_thead (top_tag_head);
4650
4651 /* Look through the symbols. Add debugging information for each
4652 symbol that has not already received it. */
4653 hold_file_ptr = cur_file_ptr;
4654 hold_proc_ptr = cur_proc_ptr;
4655 cur_proc_ptr = (proc_t *) NULL;
4656 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4657 {
4658 if (symbol_get_obj (sym)->ecoff_symbol != NULL
4659 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL
4660 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0)
4661 continue;
4662
4663 cur_file_ptr = symbol_get_obj (sym)->ecoff_file;
4664 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym,
4665 (bfd_vma) 0, S_GET_VALUE (sym), indexNil);
4666 }
4667 cur_proc_ptr = hold_proc_ptr;
4668 cur_file_ptr = hold_file_ptr;
4669
4670 /* Output an ending symbol for all the files. We have to do this
4671 here for the last file, so we may as well do it for all of the
4672 files. */
4673 end_warning = 0;
4674 for (fil_ptr = first_file;
4675 fil_ptr != (efdr_t *) NULL;
4676 fil_ptr = fil_ptr->next_file)
4677 {
4678 cur_file_ptr = fil_ptr;
4679 while (cur_file_ptr->cur_scope != (scope_t *) NULL
4680 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL)
4681 {
4682 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev;
4683 if (! end_warning && ! cur_file_ptr->fake)
4684 {
4685 as_warn (_("missing .end or .bend at end of file"));
4686 end_warning = 1;
4687 }
4688 }
4689 if (cur_file_ptr->cur_scope != (scope_t *) NULL)
4690 (void) add_ecoff_symbol ((const char *) NULL,
4691 st_End, sc_Text,
4692 (symbolS *) NULL,
4693 (bfd_vma) 0,
4694 (symint_t) 0,
4695 (symint_t) 0);
4696 }
4697
4698 /* Build the symbolic information. */
4699 offset = 0;
4700 buf = xmalloc (PAGE_SIZE);
4701 bufend = buf + PAGE_SIZE;
4702
4703 /* Build the line number information. */
4704 hdr->cbLineOffset = offset;
4705 offset = ecoff_build_lineno (backend, &buf, &bufend, offset,
4706 &hdr->ilineMax);
4707 hdr->cbLine = offset - hdr->cbLineOffset;
4708
4709 /* We don't use dense numbers at all. */
4710 hdr->idnMax = 0;
4711 hdr->cbDnOffset = 0;
4712
4713 /* We can't build the PDR table until we have built the symbols,
4714 because a PDR contains a symbol index. However, we set aside
4715 space at this point. */
4716 hdr->ipdMax = proc_cnt;
4717 hdr->cbPdOffset = offset;
4718 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size)
4719 (void) ecoff_add_bytes (&buf, &bufend, buf + offset,
4720 proc_cnt * external_pdr_size);
4721 offset += proc_cnt * external_pdr_size;
4722
4723 /* Build the local symbols. */
4724 hdr->cbSymOffset = offset;
4725 offset = ecoff_build_symbols (backend, &buf, &bufend, offset);
4726 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size;
4727
4728 /* Building the symbols initializes the symbol index in the PDR's.
4729 Now we can swap out the PDR's. */
4730 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset);
4731
4732 /* We don't use optimization symbols. */
4733 hdr->ioptMax = 0;
4734 hdr->cbOptOffset = 0;
4735
4736 /* Swap out the auxiliary type information. */
4737 hdr->cbAuxOffset = offset;
4738 offset = ecoff_build_aux (backend, &buf, &bufend, offset);
4739 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext);
4740
4741 /* Copy out the local strings. */
4742 hdr->cbSsOffset = offset;
4743 offset = ecoff_build_ss (backend, &buf, &bufend, offset);
4744 hdr->issMax = offset - hdr->cbSsOffset;
4745
4746 /* We don't use relative file descriptors. */
4747 hdr->crfd = 0;
4748 hdr->cbRfdOffset = 0;
4749
4750 /* Swap out the file descriptors. */
4751 hdr->cbFdOffset = offset;
4752 offset = ecoff_build_fdr (backend, &buf, &bufend, offset);
4753 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size;
4754
4755 /* Set up the external symbols, which are handled by the BFD back
4756 end. */
4757 hdr->issExtMax = 0;
4758 hdr->cbSsExtOffset = 0;
4759 hdr->iextMax = 0;
4760 hdr->cbExtOffset = 0;
4761 ecoff_setup_ext ();
4762
4763 know ((offset & (backend->debug_align - 1)) == 0);
4764
4765 /* FIXME: This value should be determined from the .verstamp directive,
4766 with reasonable defaults in config files. */
4767 #ifdef TC_ALPHA
4768 hdr->vstamp = 0x030b;
4769 #else
4770 hdr->vstamp = 0x020b;
4771 #endif
4772
4773 *bufp = buf;
4774 return offset;
4775 }
4776 \f
4777 /* Allocate a cluster of pages. */
4778
4779 #ifndef MALLOC_CHECK
4780
4781 static page_type *
4782 allocate_cluster (unsigned long npages)
4783 {
4784 register page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE);
4785
4786 #ifdef ECOFF_DEBUG
4787 if (debug > 3)
4788 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value);
4789 #endif
4790
4791 memset (value, 0, npages * PAGE_USIZE);
4792
4793 return value;
4794 }
4795
4796 static page_type *cluster_ptr = NULL;
4797 static unsigned long pages_left = 0;
4798
4799 #endif /* MALLOC_CHECK */
4800
4801 /* Allocate one page (which is initialized to 0). */
4802
4803 static page_type *
4804 allocate_page (void)
4805 {
4806 #ifndef MALLOC_CHECK
4807
4808 if (pages_left == 0)
4809 {
4810 pages_left = MAX_CLUSTER_PAGES;
4811 cluster_ptr = allocate_cluster (pages_left);
4812 }
4813
4814 pages_left--;
4815 return cluster_ptr++;
4816
4817 #else /* MALLOC_CHECK */
4818
4819 page_type *ptr;
4820
4821 ptr = xmalloc (PAGE_USIZE);
4822 memset (ptr, 0, PAGE_USIZE);
4823 return ptr;
4824
4825 #endif /* MALLOC_CHECK */
4826 }
4827 \f
4828 /* Allocate scoping information. */
4829
4830 static scope_t *
4831 allocate_scope (void)
4832 {
4833 register scope_t *ptr;
4834 static scope_t initial_scope;
4835
4836 #ifndef MALLOC_CHECK
4837
4838 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4839 if (ptr != (scope_t *) NULL)
4840 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free;
4841 else
4842 {
4843 register int unallocated = alloc_counts[(int) alloc_type_scope].unallocated;
4844 register page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page;
4845
4846 if (unallocated == 0)
4847 {
4848 unallocated = PAGE_SIZE / sizeof (scope_t);
4849 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page ();
4850 alloc_counts[(int) alloc_type_scope].total_pages++;
4851 }
4852
4853 ptr = &cur_page->scope[--unallocated];
4854 alloc_counts[(int) alloc_type_scope].unallocated = unallocated;
4855 }
4856
4857 #else
4858
4859 ptr = (scope_t *) xmalloc (sizeof (scope_t));
4860
4861 #endif
4862
4863 alloc_counts[(int) alloc_type_scope].total_alloc++;
4864 *ptr = initial_scope;
4865 return ptr;
4866 }
4867
4868 /* Free scoping information. */
4869
4870 static void
4871 free_scope (scope_t *ptr)
4872 {
4873 alloc_counts[(int) alloc_type_scope].total_free++;
4874
4875 #ifndef MALLOC_CHECK
4876 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4877 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr;
4878 #else
4879 free ((PTR) ptr);
4880 #endif
4881 }
4882 \f
4883 /* Allocate links for pages in a virtual array. */
4884
4885 static vlinks_t *
4886 allocate_vlinks (void)
4887 {
4888 register vlinks_t *ptr;
4889 static vlinks_t initial_vlinks;
4890
4891 #ifndef MALLOC_CHECK
4892
4893 register int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated;
4894 register page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page;
4895
4896 if (unallocated == 0)
4897 {
4898 unallocated = PAGE_SIZE / sizeof (vlinks_t);
4899 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page ();
4900 alloc_counts[(int) alloc_type_vlinks].total_pages++;
4901 }
4902
4903 ptr = &cur_page->vlinks[--unallocated];
4904 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated;
4905
4906 #else
4907
4908 ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t));
4909
4910 #endif
4911
4912 alloc_counts[(int) alloc_type_vlinks].total_alloc++;
4913 *ptr = initial_vlinks;
4914 return ptr;
4915 }
4916 \f
4917 /* Allocate string hash buckets. */
4918
4919 static shash_t *
4920 allocate_shash (void)
4921 {
4922 register shash_t *ptr;
4923 static shash_t initial_shash;
4924
4925 #ifndef MALLOC_CHECK
4926
4927 register int unallocated = alloc_counts[(int) alloc_type_shash].unallocated;
4928 register page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page;
4929
4930 if (unallocated == 0)
4931 {
4932 unallocated = PAGE_SIZE / sizeof (shash_t);
4933 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page ();
4934 alloc_counts[(int) alloc_type_shash].total_pages++;
4935 }
4936
4937 ptr = &cur_page->shash[--unallocated];
4938 alloc_counts[(int) alloc_type_shash].unallocated = unallocated;
4939
4940 #else
4941
4942 ptr = (shash_t *) xmalloc (sizeof (shash_t));
4943
4944 #endif
4945
4946 alloc_counts[(int) alloc_type_shash].total_alloc++;
4947 *ptr = initial_shash;
4948 return ptr;
4949 }
4950 \f
4951 /* Allocate type hash buckets. */
4952
4953 static thash_t *
4954 allocate_thash (void)
4955 {
4956 register thash_t *ptr;
4957 static thash_t initial_thash;
4958
4959 #ifndef MALLOC_CHECK
4960
4961 register int unallocated = alloc_counts[(int) alloc_type_thash].unallocated;
4962 register page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page;
4963
4964 if (unallocated == 0)
4965 {
4966 unallocated = PAGE_SIZE / sizeof (thash_t);
4967 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page ();
4968 alloc_counts[(int) alloc_type_thash].total_pages++;
4969 }
4970
4971 ptr = &cur_page->thash[--unallocated];
4972 alloc_counts[(int) alloc_type_thash].unallocated = unallocated;
4973
4974 #else
4975
4976 ptr = (thash_t *) xmalloc (sizeof (thash_t));
4977
4978 #endif
4979
4980 alloc_counts[(int) alloc_type_thash].total_alloc++;
4981 *ptr = initial_thash;
4982 return ptr;
4983 }
4984 \f
4985 /* Allocate structure, union, or enum tag information. */
4986
4987 static tag_t *
4988 allocate_tag (void)
4989 {
4990 register tag_t *ptr;
4991 static tag_t initial_tag;
4992
4993 #ifndef MALLOC_CHECK
4994
4995 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
4996 if (ptr != (tag_t *) NULL)
4997 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free;
4998 else
4999 {
5000 register int unallocated = alloc_counts[(int) alloc_type_tag].unallocated;
5001 register page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page;
5002
5003 if (unallocated == 0)
5004 {
5005 unallocated = PAGE_SIZE / sizeof (tag_t);
5006 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page ();
5007 alloc_counts[(int) alloc_type_tag].total_pages++;
5008 }
5009
5010 ptr = &cur_page->tag[--unallocated];
5011 alloc_counts[(int) alloc_type_tag].unallocated = unallocated;
5012 }
5013
5014 #else
5015
5016 ptr = (tag_t *) xmalloc (sizeof (tag_t));
5017
5018 #endif
5019
5020 alloc_counts[(int) alloc_type_tag].total_alloc++;
5021 *ptr = initial_tag;
5022 return ptr;
5023 }
5024
5025 /* Free scoping information. */
5026
5027 static void
5028 free_tag (tag_t *ptr)
5029 {
5030 alloc_counts[(int) alloc_type_tag].total_free++;
5031
5032 #ifndef MALLOC_CHECK
5033 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
5034 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr;
5035 #else
5036 free ((PTR_T) ptr);
5037 #endif
5038 }
5039 \f
5040 /* Allocate forward reference to a yet unknown tag. */
5041
5042 static forward_t *
5043 allocate_forward (void)
5044 {
5045 register forward_t *ptr;
5046 static forward_t initial_forward;
5047
5048 #ifndef MALLOC_CHECK
5049
5050 register int unallocated = alloc_counts[(int) alloc_type_forward].unallocated;
5051 register page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page;
5052
5053 if (unallocated == 0)
5054 {
5055 unallocated = PAGE_SIZE / sizeof (forward_t);
5056 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page ();
5057 alloc_counts[(int) alloc_type_forward].total_pages++;
5058 }
5059
5060 ptr = &cur_page->forward[--unallocated];
5061 alloc_counts[(int) alloc_type_forward].unallocated = unallocated;
5062
5063 #else
5064
5065 ptr = (forward_t *) xmalloc (sizeof (forward_t));
5066
5067 #endif
5068
5069 alloc_counts[(int) alloc_type_forward].total_alloc++;
5070 *ptr = initial_forward;
5071 return ptr;
5072 }
5073 \f
5074 /* Allocate head of type hash list. */
5075
5076 static thead_t *
5077 allocate_thead (void)
5078 {
5079 register thead_t *ptr;
5080 static thead_t initial_thead;
5081
5082 #ifndef MALLOC_CHECK
5083
5084 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5085 if (ptr != (thead_t *) NULL)
5086 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free;
5087 else
5088 {
5089 register int unallocated = alloc_counts[(int) alloc_type_thead].unallocated;
5090 register page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page;
5091
5092 if (unallocated == 0)
5093 {
5094 unallocated = PAGE_SIZE / sizeof (thead_t);
5095 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page ();
5096 alloc_counts[(int) alloc_type_thead].total_pages++;
5097 }
5098
5099 ptr = &cur_page->thead[--unallocated];
5100 alloc_counts[(int) alloc_type_thead].unallocated = unallocated;
5101 }
5102
5103 #else
5104
5105 ptr = (thead_t *) xmalloc (sizeof (thead_t));
5106
5107 #endif
5108
5109 alloc_counts[(int) alloc_type_thead].total_alloc++;
5110 *ptr = initial_thead;
5111 return ptr;
5112 }
5113
5114 /* Free scoping information. */
5115
5116 static void
5117 free_thead (thead_t *ptr)
5118 {
5119 alloc_counts[(int) alloc_type_thead].total_free++;
5120
5121 #ifndef MALLOC_CHECK
5122 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5123 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr;
5124 #else
5125 free ((PTR_T) ptr);
5126 #endif
5127 }
5128 \f
5129 static lineno_list_t *
5130 allocate_lineno_list (void)
5131 {
5132 register lineno_list_t *ptr;
5133 static lineno_list_t initial_lineno_list;
5134
5135 #ifndef MALLOC_CHECK
5136
5137 register int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated;
5138 register page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page;
5139
5140 if (unallocated == 0)
5141 {
5142 unallocated = PAGE_SIZE / sizeof (lineno_list_t);
5143 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page ();
5144 alloc_counts[(int) alloc_type_lineno].total_pages++;
5145 }
5146
5147 ptr = &cur_page->lineno[--unallocated];
5148 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated;
5149
5150 #else
5151
5152 ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t));
5153
5154 #endif
5155
5156 alloc_counts[(int) alloc_type_lineno].total_alloc++;
5157 *ptr = initial_lineno_list;
5158 return ptr;
5159 }
5160
5161 void
5162 ecoff_set_gp_prolog_size (int sz)
5163 {
5164 if (cur_proc_ptr == 0)
5165 return;
5166
5167 cur_proc_ptr->pdr.gp_prologue = sz;
5168 if (cur_proc_ptr->pdr.gp_prologue != sz)
5169 {
5170 as_warn (_("GP prologue size exceeds field size, using 0 instead"));
5171 cur_proc_ptr->pdr.gp_prologue = 0;
5172 }
5173
5174 cur_proc_ptr->pdr.gp_used = 1;
5175 }
5176
5177 int
5178 ecoff_no_current_file (void)
5179 {
5180 return cur_file_ptr == (efdr_t *) NULL;
5181 }
5182
5183 void
5184 ecoff_generate_asm_lineno (void)
5185 {
5186 unsigned int lineno;
5187 char *filename;
5188 lineno_list_t *list;
5189
5190 as_where (&filename, &lineno);
5191
5192 if (current_stabs_filename == (char *) NULL
5193 || strcmp (current_stabs_filename, filename))
5194 add_file (filename, 0, 1);
5195
5196 list = allocate_lineno_list ();
5197
5198 list->next = (lineno_list_t *) NULL;
5199 list->file = cur_file_ptr;
5200 list->proc = cur_proc_ptr;
5201 list->frag = frag_now;
5202 list->paddr = frag_now_fix ();
5203 list->lineno = lineno;
5204
5205 /* We don't want to merge files which have line numbers. */
5206 cur_file_ptr->fdr.fMerge = 0;
5207
5208 /* A .loc directive will sometimes appear before a .ent directive,
5209 which means that cur_proc_ptr will be NULL here. Arrange to
5210 patch this up. */
5211 if (cur_proc_ptr == (proc_t *) NULL)
5212 {
5213 lineno_list_t **pl;
5214
5215 pl = &noproc_lineno;
5216 while (*pl != (lineno_list_t *) NULL)
5217 pl = &(*pl)->next;
5218 *pl = list;
5219 }
5220 else
5221 {
5222 last_lineno = list;
5223 *last_lineno_ptr = list;
5224 last_lineno_ptr = &list->next;
5225 }
5226 }
5227
5228 #else
5229
5230 void
5231 ecoff_generate_asm_lineno (void)
5232 {
5233 }
5234
5235 #endif /* ECOFF_DEBUGGING */
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