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[deliverable/binutils-gdb.git] / gas / ecoff.c
1 /* ECOFF debugging support.
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
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 3, 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 #include "filenames.h"
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
1510 void
1511 ecoff_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP)
1512 {
1513 OBJ_SYMFIELD_TYPE *n, *o;
1514
1515 n = symbol_get_obj (newsymP);
1516 o = symbol_get_obj (orgsymP);
1517 memcpy (n, o, sizeof *n);
1518 }
1519 \f
1520 /* Add a page to a varray object. */
1521
1522 static void
1523 add_varray_page (varray_t *vp /* varray to add page to */)
1524 {
1525 vlinks_t *new_links = allocate_vlinks ();
1526
1527 #ifdef MALLOC_CHECK
1528 if (vp->object_size > 1)
1529 new_links->datum = (page_type *) xcalloc (1, vp->object_size);
1530 else
1531 #endif
1532 new_links->datum = allocate_page ();
1533
1534 alloc_counts[(int) alloc_type_varray].total_alloc++;
1535 alloc_counts[(int) alloc_type_varray].total_pages++;
1536
1537 new_links->start_index = vp->num_allocated;
1538 vp->objects_last_page = 0;
1539
1540 if (vp->first == (vlinks_t *) NULL) /* first allocation? */
1541 vp->first = vp->last = new_links;
1542 else
1543 { /* 2nd or greater allocation */
1544 new_links->prev = vp->last;
1545 vp->last->next = new_links;
1546 vp->last = new_links;
1547 }
1548 }
1549 \f
1550 /* Add a string (and null pad) to one of the string tables. */
1551
1552 static symint_t
1553 add_string (varray_t *vp, /* string obstack */
1554 struct hash_control *hash_tbl, /* ptr to hash table */
1555 const char *str, /* string */
1556 shash_t **ret_hash /* return hash pointer */)
1557 {
1558 register unsigned long len = strlen (str);
1559 register shash_t *hash_ptr;
1560
1561 if (len >= PAGE_USIZE)
1562 as_fatal (_("string too big (%lu bytes)"), len);
1563
1564 hash_ptr = (shash_t *) hash_find (hash_tbl, str);
1565 if (hash_ptr == (shash_t *) NULL)
1566 {
1567 register const char *err;
1568
1569 if (vp->objects_last_page + len >= PAGE_USIZE)
1570 {
1571 vp->num_allocated =
1572 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE;
1573 add_varray_page (vp);
1574 }
1575
1576 hash_ptr = allocate_shash ();
1577 hash_ptr->indx = vp->num_allocated;
1578
1579 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page];
1580
1581 vp->objects_last_page += len + 1;
1582 vp->num_allocated += len + 1;
1583
1584 strcpy (hash_ptr->string, str);
1585
1586 err = hash_insert (hash_tbl, str, (char *) hash_ptr);
1587 if (err)
1588 as_fatal (_("inserting \"%s\" into string hash table: %s"),
1589 str, err);
1590 }
1591
1592 if (ret_hash != (shash_t **) NULL)
1593 *ret_hash = hash_ptr;
1594
1595 return hash_ptr->indx;
1596 }
1597 \f
1598 /* Add debugging information for a symbol. */
1599
1600 static localsym_t *
1601 add_ecoff_symbol (const char *str, /* symbol name */
1602 st_t type, /* symbol type */
1603 sc_t storage, /* storage class */
1604 symbolS *sym_value, /* associated symbol. */
1605 bfd_vma addend, /* addend to sym_value. */
1606 symint_t value, /* value of symbol */
1607 symint_t indx /* index to local/aux. syms */)
1608 {
1609 localsym_t *psym;
1610 register scope_t *pscope;
1611 register thead_t *ptag_head;
1612 register tag_t *ptag;
1613 register tag_t *ptag_next;
1614 register varray_t *vp;
1615 register int scope_delta = 0;
1616 shash_t *hash_ptr = (shash_t *) NULL;
1617
1618 if (cur_file_ptr == (efdr_t *) NULL)
1619 as_fatal (_("no current file pointer"));
1620
1621 vp = &cur_file_ptr->symbols;
1622
1623 if (vp->objects_last_page == vp->objects_per_page)
1624 add_varray_page (vp);
1625
1626 psym = &vp->last->datum->sym[vp->objects_last_page++];
1627
1628 if (str == (const char *) NULL && sym_value != (symbolS *) NULL)
1629 psym->name = S_GET_NAME (sym_value);
1630 else
1631 psym->name = str;
1632 psym->as_sym = sym_value;
1633 if (sym_value != (symbolS *) NULL)
1634 symbol_get_obj (sym_value)->ecoff_symbol = psym;
1635 psym->addend = addend;
1636 psym->file_ptr = cur_file_ptr;
1637 psym->proc_ptr = cur_proc_ptr;
1638 psym->begin_ptr = (localsym_t *) NULL;
1639 psym->index_ptr = (aux_t *) NULL;
1640 psym->forward_ref = (forward_t *) NULL;
1641 psym->sym_index = -1;
1642 memset (&psym->ecoff_sym, 0, sizeof (EXTR));
1643 psym->ecoff_sym.asym.value = value;
1644 psym->ecoff_sym.asym.st = (unsigned) type;
1645 psym->ecoff_sym.asym.sc = (unsigned) storage;
1646 psym->ecoff_sym.asym.index = indx;
1647
1648 /* If there is an associated symbol, we wait until the end of the
1649 assembly before deciding where to put the name (it may be just an
1650 external symbol). Otherwise, this is just a debugging symbol and
1651 the name should go with the current file. */
1652 if (sym_value == (symbolS *) NULL)
1653 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL)
1654 ? 0
1655 : add_string (&cur_file_ptr->strings,
1656 cur_file_ptr->str_hash,
1657 str,
1658 &hash_ptr));
1659
1660 ++vp->num_allocated;
1661
1662 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym))
1663 return psym;
1664
1665 /* Save the symbol within the hash table if this is a static
1666 item, and it has a name. */
1667 if (hash_ptr != (shash_t *) NULL
1668 && (type == st_Global || type == st_Static || type == st_Label
1669 || type == st_Proc || type == st_StaticProc))
1670 hash_ptr->sym_ptr = psym;
1671
1672 /* push or pop a scope if appropriate. */
1673 switch (type)
1674 {
1675 default:
1676 break;
1677
1678 case st_File: /* beginning of file */
1679 case st_Proc: /* procedure */
1680 case st_StaticProc: /* static procedure */
1681 case st_Block: /* begin scope */
1682 pscope = allocate_scope ();
1683 pscope->prev = cur_file_ptr->cur_scope;
1684 pscope->lsym = psym;
1685 pscope->type = type;
1686 cur_file_ptr->cur_scope = pscope;
1687
1688 if (type != st_File)
1689 scope_delta = 1;
1690
1691 /* For every block type except file, struct, union, or
1692 enumeration blocks, push a level on the tag stack. We omit
1693 file types, so that tags can span file boundaries. */
1694 if (type != st_File && storage != sc_Info)
1695 {
1696 ptag_head = allocate_thead ();
1697 ptag_head->first_tag = 0;
1698 ptag_head->prev = cur_tag_head;
1699 cur_tag_head = ptag_head;
1700 }
1701 break;
1702
1703 case st_End:
1704 pscope = cur_file_ptr->cur_scope;
1705 if (pscope == (scope_t *) NULL)
1706 as_fatal (_("too many st_End's"));
1707 else
1708 {
1709 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st;
1710
1711 psym->begin_ptr = pscope->lsym;
1712
1713 if (begin_type != st_File)
1714 scope_delta = -1;
1715
1716 /* Except for file, structure, union, or enumeration end
1717 blocks remove all tags created within this scope. */
1718 if (begin_type != st_File && storage != sc_Info)
1719 {
1720 ptag_head = cur_tag_head;
1721 cur_tag_head = ptag_head->prev;
1722
1723 for (ptag = ptag_head->first_tag;
1724 ptag != (tag_t *) NULL;
1725 ptag = ptag_next)
1726 {
1727 if (ptag->forward_ref != (forward_t *) NULL)
1728 add_unknown_tag (ptag);
1729
1730 ptag_next = ptag->same_block;
1731 ptag->hash_ptr->tag_ptr = ptag->same_name;
1732 free_tag (ptag);
1733 }
1734
1735 free_thead (ptag_head);
1736 }
1737
1738 cur_file_ptr->cur_scope = pscope->prev;
1739
1740 /* block begin gets next sym #. This is set when we know
1741 the symbol index value. */
1742
1743 /* Functions push two or more aux words as follows:
1744 1st word: index+1 of the end symbol (filled in later).
1745 2nd word: type of the function (plus any aux words needed).
1746 Also, tie the external pointer back to the function begin symbol. */
1747 if (begin_type != st_File && begin_type != st_Block)
1748 {
1749 symint_t ty;
1750 varray_t *svp = &cur_file_ptr->aux_syms;
1751
1752 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0);
1753 pscope->lsym->index_ptr =
1754 &svp->last->datum->aux[svp->objects_last_page - 1];
1755 ty = add_aux_sym_tir (&last_func_type_info,
1756 hash_no,
1757 &cur_file_ptr->thash_head[0]);
1758 (void) ty;
1759 /* This seems to be unnecessary. I'm not even sure what it is
1760 * intended to do. It's from mips-tfile.
1761 * if (last_func_sym_value != (symbolS *) NULL)
1762 * {
1763 * last_func_sym_value->ifd = cur_file_ptr->file_index;
1764 * last_func_sym_value->index = ty;
1765 * }
1766 */
1767 }
1768
1769 free_scope (pscope);
1770 }
1771 }
1772
1773 cur_file_ptr->nested_scopes += scope_delta;
1774
1775 #ifdef ECOFF_DEBUG
1776 if (debug && type != st_File
1777 && (debug > 2 || type == st_Block || type == st_End
1778 || type == st_Proc || type == st_StaticProc))
1779 {
1780 char *sc_str = sc_to_string (storage);
1781 char *st_str = st_to_string (type);
1782 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0);
1783
1784 fprintf (stderr,
1785 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s",
1786 value, depth, sc_str);
1787
1788 if (str_start && str_end_p1 - str_start > 0)
1789 fprintf (stderr, " st= %-11s name= %.*s\n",
1790 st_str, str_end_p1 - str_start, str_start);
1791 else
1792 {
1793 unsigned long len = strlen (st_str);
1794 fprintf (stderr, " st= %.*s\n", len - 1, st_str);
1795 }
1796 }
1797 #endif
1798
1799 return psym;
1800 }
1801 \f
1802 /* Add an auxiliary symbol (passing a symint). This is actually used
1803 for integral aux types, not just symints. */
1804
1805 static symint_t
1806 add_aux_sym_symint (symint_t aux_word /* auxiliary information word */)
1807 {
1808 register varray_t *vp;
1809 register aux_t *aux_ptr;
1810
1811 if (cur_file_ptr == (efdr_t *) NULL)
1812 as_fatal (_("no current file pointer"));
1813
1814 vp = &cur_file_ptr->aux_syms;
1815
1816 if (vp->objects_last_page == vp->objects_per_page)
1817 add_varray_page (vp);
1818
1819 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1820 aux_ptr->type = aux_isym;
1821 aux_ptr->data.isym = aux_word;
1822
1823 return vp->num_allocated++;
1824 }
1825
1826 /* Add an auxiliary symbol (passing a file/symbol index combo). */
1827
1828 static symint_t
1829 add_aux_sym_rndx (int file_index, symint_t sym_index)
1830 {
1831 register varray_t *vp;
1832 register aux_t *aux_ptr;
1833
1834 if (cur_file_ptr == (efdr_t *) NULL)
1835 as_fatal (_("no current file pointer"));
1836
1837 vp = &cur_file_ptr->aux_syms;
1838
1839 if (vp->objects_last_page == vp->objects_per_page)
1840 add_varray_page (vp);
1841
1842 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1843 aux_ptr->type = aux_rndx;
1844 aux_ptr->data.rndx.rfd = file_index;
1845 aux_ptr->data.rndx.index = sym_index;
1846
1847 return vp->num_allocated++;
1848 }
1849 \f
1850 /* Add an auxiliary symbol (passing the basic type and possibly
1851 type qualifiers). */
1852
1853 static symint_t
1854 add_aux_sym_tir (type_info_t *t, /* current type information */
1855 hash_state_t state, /* whether to hash type or not */
1856 thash_t **hash_tbl /* pointer to hash table to use */)
1857 {
1858 register varray_t *vp;
1859 register aux_t *aux_ptr;
1860 static AUXU init_aux;
1861 symint_t ret;
1862 int i;
1863 AUXU aux;
1864
1865 if (cur_file_ptr == (efdr_t *) NULL)
1866 as_fatal (_("no current file pointer"));
1867
1868 vp = &cur_file_ptr->aux_syms;
1869
1870 aux = init_aux;
1871 aux.ti.bt = (int) t->basic_type;
1872 aux.ti.continued = 0;
1873 aux.ti.fBitfield = t->bitfield;
1874
1875 aux.ti.tq0 = (int) t->type_qualifiers[0];
1876 aux.ti.tq1 = (int) t->type_qualifiers[1];
1877 aux.ti.tq2 = (int) t->type_qualifiers[2];
1878 aux.ti.tq3 = (int) t->type_qualifiers[3];
1879 aux.ti.tq4 = (int) t->type_qualifiers[4];
1880 aux.ti.tq5 = (int) t->type_qualifiers[5];
1881
1882 /* For anything that adds additional information, we must not hash,
1883 so check here, and reset our state. */
1884
1885 if (state != hash_no
1886 && (t->type_qualifiers[0] == tq_Array
1887 || t->type_qualifiers[1] == tq_Array
1888 || t->type_qualifiers[2] == tq_Array
1889 || t->type_qualifiers[3] == tq_Array
1890 || t->type_qualifiers[4] == tq_Array
1891 || t->type_qualifiers[5] == tq_Array
1892 || t->basic_type == bt_Struct
1893 || t->basic_type == bt_Union
1894 || t->basic_type == bt_Enum
1895 || t->bitfield
1896 || t->num_dims > 0))
1897 state = hash_no;
1898
1899 /* See if we can hash this type, and save some space, but some types
1900 can't be hashed (because they contain arrays or continuations),
1901 and others can be put into the hash list, but cannot use existing
1902 types because other aux entries precede this one. */
1903
1904 if (state != hash_no)
1905 {
1906 register thash_t *hash_ptr;
1907 register symint_t hi;
1908
1909 hi = aux.isym & ((1 << HASHBITS) - 1);
1910 hi %= THASH_SIZE;
1911
1912 for (hash_ptr = hash_tbl[hi];
1913 hash_ptr != (thash_t *)0;
1914 hash_ptr = hash_ptr->next)
1915 {
1916 if (aux.isym == hash_ptr->type.isym)
1917 break;
1918 }
1919
1920 if (hash_ptr != (thash_t *) NULL && state == hash_yes)
1921 return hash_ptr->indx;
1922
1923 if (hash_ptr == (thash_t *) NULL)
1924 {
1925 hash_ptr = allocate_thash ();
1926 hash_ptr->next = hash_tbl[hi];
1927 hash_ptr->type = aux;
1928 hash_ptr->indx = vp->num_allocated;
1929 hash_tbl[hi] = hash_ptr;
1930 }
1931 }
1932
1933 /* Everything is set up, add the aux symbol. */
1934 if (vp->objects_last_page == vp->objects_per_page)
1935 add_varray_page (vp);
1936
1937 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1938 aux_ptr->type = aux_tir;
1939 aux_ptr->data = aux;
1940
1941 ret = vp->num_allocated++;
1942
1943 /* Add bitfield length if it exists.
1944
1945 NOTE: Mips documentation claims bitfield goes at the end of the
1946 AUX record, but the DECstation compiler emits it here.
1947 (This would only make a difference for enum bitfields.)
1948
1949 Also note: We use the last size given since gcc may emit 2
1950 for an enum bitfield. */
1951
1952 if (t->bitfield)
1953 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]);
1954
1955 /* Add tag information if needed. Structure, union, and enum
1956 references add 2 aux symbols: a [file index, symbol index]
1957 pointer to the structure type, and the current file index. */
1958
1959 if (t->basic_type == bt_Struct
1960 || t->basic_type == bt_Union
1961 || t->basic_type == bt_Enum)
1962 {
1963 register symint_t file_index = t->tag_ptr->ifd;
1964 register localsym_t *sym = t->tag_ptr->sym;
1965 register forward_t *forward_ref = allocate_forward ();
1966
1967 if (sym != (localsym_t *) NULL)
1968 {
1969 forward_ref->next = sym->forward_ref;
1970 sym->forward_ref = forward_ref;
1971 }
1972 else
1973 {
1974 forward_ref->next = t->tag_ptr->forward_ref;
1975 t->tag_ptr->forward_ref = forward_ref;
1976 }
1977
1978 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil);
1979 forward_ref->index_ptr
1980 = &vp->last->datum->aux[vp->objects_last_page - 1];
1981
1982 (void) add_aux_sym_symint (file_index);
1983 forward_ref->ifd_ptr
1984 = &vp->last->datum->aux[vp->objects_last_page - 1];
1985 }
1986
1987 /* Add information about array bounds if they exist. */
1988 for (i = 0; i < t->num_dims; i++)
1989 {
1990 (void) add_aux_sym_rndx (ST_RFDESCAPE,
1991 cur_file_ptr->int_type);
1992
1993 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/
1994 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */
1995 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/
1996 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */
1997 ? 0
1998 : (t->sizes[i] * 8) / t->dimensions[i]);
1999 };
2000
2001 /* NOTE: Mips documentation claims that the bitfield width goes here.
2002 But it needs to be emitted earlier. */
2003
2004 return ret;
2005 }
2006 \f
2007 /* Add a tag to the tag table (unless it already exists). */
2008
2009 static tag_t *
2010 get_tag (const char *tag, /* tag name */
2011 localsym_t *sym, /* tag start block */
2012 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */)
2013 {
2014 shash_t *hash_ptr;
2015 const char *err;
2016 tag_t *tag_ptr;
2017
2018 if (cur_file_ptr == (efdr_t *) NULL)
2019 as_fatal (_("no current file pointer"));
2020
2021 hash_ptr = (shash_t *) hash_find (tag_hash, tag);
2022
2023 if (hash_ptr != (shash_t *) NULL
2024 && hash_ptr->tag_ptr != (tag_t *) NULL)
2025 {
2026 tag_ptr = hash_ptr->tag_ptr;
2027 if (sym != (localsym_t *) NULL)
2028 {
2029 tag_ptr->basic_type = basic_type;
2030 tag_ptr->ifd = cur_file_ptr->file_index;
2031 tag_ptr->sym = sym;
2032 }
2033 return tag_ptr;
2034 }
2035
2036 if (hash_ptr == (shash_t *) NULL)
2037 {
2038 char *perm;
2039
2040 perm = xstrdup (tag);
2041 hash_ptr = allocate_shash ();
2042 err = hash_insert (tag_hash, perm, (char *) hash_ptr);
2043 if (err)
2044 as_fatal (_("inserting \"%s\" into tag hash table: %s"),
2045 tag, err);
2046 hash_ptr->string = perm;
2047 }
2048
2049 tag_ptr = allocate_tag ();
2050 tag_ptr->forward_ref = (forward_t *) NULL;
2051 tag_ptr->hash_ptr = hash_ptr;
2052 tag_ptr->same_name = hash_ptr->tag_ptr;
2053 tag_ptr->basic_type = basic_type;
2054 tag_ptr->sym = sym;
2055 tag_ptr->ifd = ((sym == (localsym_t *) NULL)
2056 ? (symint_t) -1
2057 : cur_file_ptr->file_index);
2058 tag_ptr->same_block = cur_tag_head->first_tag;
2059
2060 cur_tag_head->first_tag = tag_ptr;
2061 hash_ptr->tag_ptr = tag_ptr;
2062
2063 return tag_ptr;
2064 }
2065 \f
2066 /* Add an unknown {struct, union, enum} tag. */
2067
2068 static void
2069 add_unknown_tag (tag_t *ptag /* pointer to tag information */)
2070 {
2071 shash_t *hash_ptr = ptag->hash_ptr;
2072 char *name = hash_ptr->string;
2073 localsym_t *sym;
2074 forward_t **pf;
2075
2076 #ifdef ECOFF_DEBUG
2077 if (debug > 1)
2078 {
2079 char *agg_type = "{unknown aggregate type}";
2080 switch (ptag->basic_type)
2081 {
2082 case bt_Struct: agg_type = "struct"; break;
2083 case bt_Union: agg_type = "union"; break;
2084 case bt_Enum: agg_type = "enum"; break;
2085 default: break;
2086 }
2087
2088 fprintf (stderr, "unknown %s %.*s found\n", agg_type,
2089 hash_ptr->len, name_start);
2090 }
2091 #endif
2092
2093 sym = add_ecoff_symbol (name,
2094 st_Block,
2095 sc_Info,
2096 (symbolS *) NULL,
2097 (bfd_vma) 0,
2098 (symint_t) 0,
2099 (symint_t) 0);
2100
2101 (void) add_ecoff_symbol (name,
2102 st_End,
2103 sc_Info,
2104 (symbolS *) NULL,
2105 (bfd_vma) 0,
2106 (symint_t) 0,
2107 (symint_t) 0);
2108
2109 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next)
2110 ;
2111 *pf = ptag->forward_ref;
2112 }
2113 \f
2114 /* Add a procedure to the current file's list of procedures, and record
2115 this is the current procedure. */
2116
2117 static void
2118 add_procedure (char *func /* func name */)
2119 {
2120 register varray_t *vp;
2121 register proc_t *new_proc_ptr;
2122 symbolS *sym;
2123
2124 #ifdef ECOFF_DEBUG
2125 if (debug)
2126 fputc ('\n', stderr);
2127 #endif
2128
2129 if (cur_file_ptr == (efdr_t *) NULL)
2130 as_fatal (_("no current file pointer"));
2131
2132 vp = &cur_file_ptr->procs;
2133
2134 if (vp->objects_last_page == vp->objects_per_page)
2135 add_varray_page (vp);
2136
2137 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++];
2138
2139 if (first_proc_ptr == (proc_t *) NULL)
2140 first_proc_ptr = new_proc_ptr;
2141
2142 vp->num_allocated++;
2143
2144 new_proc_ptr->pdr.isym = -1;
2145 new_proc_ptr->pdr.iline = -1;
2146 new_proc_ptr->pdr.lnLow = -1;
2147 new_proc_ptr->pdr.lnHigh = -1;
2148
2149 /* Set the BSF_FUNCTION flag for the symbol. */
2150 sym = symbol_find_or_make (func);
2151 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION;
2152
2153 /* Push the start of the function. */
2154 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text,
2155 sym, (bfd_vma) 0, (symint_t) 0,
2156 (symint_t) 0);
2157
2158 ++proc_cnt;
2159
2160 /* Fill in the linenos preceding the .ent, if any. */
2161 if (noproc_lineno != (lineno_list_t *) NULL)
2162 {
2163 lineno_list_t *l;
2164
2165 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next)
2166 l->proc = new_proc_ptr;
2167 *last_lineno_ptr = noproc_lineno;
2168 while (*last_lineno_ptr != NULL)
2169 {
2170 last_lineno = *last_lineno_ptr;
2171 last_lineno_ptr = &last_lineno->next;
2172 }
2173 noproc_lineno = (lineno_list_t *) NULL;
2174 }
2175 }
2176
2177 symbolS *
2178 ecoff_get_cur_proc_sym (void)
2179 {
2180 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL);
2181 }
2182 \f
2183 /* Add a new filename, and set up all of the file relative
2184 virtual arrays (strings, symbols, aux syms, etc.). Record
2185 where the current file structure lives. */
2186
2187 static void
2188 add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake)
2189 {
2190 register int first_ch;
2191 register efdr_t *fil_ptr;
2192
2193 #ifdef ECOFF_DEBUG
2194 if (debug)
2195 fprintf (stderr, "\tfile\t%.*s\n", len, file_start);
2196 #endif
2197
2198 /* If the file name is NULL, then no .file symbol appeared, and we
2199 want to use the actual file name. */
2200 if (file_name == (const char *) NULL)
2201 {
2202 char *file;
2203
2204 if (first_file != (efdr_t *) NULL)
2205 as_fatal (_("fake .file after real one"));
2206 as_where (&file, (unsigned int *) NULL);
2207 file_name = (const char *) file;
2208
2209 /* Automatically generate ECOFF debugging information, since I
2210 think that's what other ECOFF assemblers do. We don't do
2211 this if we see a .file directive with a string, since that
2212 implies that some sort of debugging information is being
2213 provided. */
2214 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED)
2215 debug_type = DEBUG_ECOFF;
2216 }
2217 else if (debug_type == DEBUG_UNSPECIFIED)
2218 debug_type = DEBUG_NONE;
2219
2220 #ifndef NO_LISTING
2221 if (listing)
2222 listing_source_file (file_name);
2223 #endif
2224
2225 current_stabs_filename = file_name;
2226
2227 /* If we're creating stabs, then we don't actually make a new FDR.
2228 Instead, we just create a stabs symbol. */
2229 if (stabs_seen)
2230 {
2231 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2232 symbol_new ("L0\001", now_seg,
2233 (valueT) frag_now_fix (),
2234 frag_now),
2235 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL));
2236 return;
2237 }
2238
2239 first_ch = *file_name;
2240
2241 /* FIXME: We can't safely merge files which have line number
2242 information (fMerge will be zero in this case). Otherwise, we
2243 get incorrect line number debugging info. See for instance
2244 ecoff_build_lineno, which will end up setting all file->fdr.*
2245 fields multiple times, resulting in incorrect debug info. In
2246 order to make this work right, all line number and symbol info
2247 for the same source file has to be adjacent in the object file,
2248 so that a single file descriptor can be used to point to them.
2249 This would require maintaining file specific lists of line
2250 numbers and symbols for each file, so that they can be merged
2251 together (or output together) when two .file pseudo-ops are
2252 merged into one file descriptor. */
2253
2254 /* See if the file has already been created. */
2255 for (fil_ptr = first_file;
2256 fil_ptr != (efdr_t *) NULL;
2257 fil_ptr = fil_ptr->next_file)
2258 {
2259 if (first_ch == fil_ptr->name[0]
2260 && filename_cmp (file_name, fil_ptr->name) == 0
2261 && fil_ptr->fdr.fMerge)
2262 {
2263 cur_file_ptr = fil_ptr;
2264 if (! fake)
2265 cur_file_ptr->fake = 0;
2266 break;
2267 }
2268 }
2269
2270 /* If this is a new file, create it. */
2271 if (fil_ptr == (efdr_t *) NULL)
2272 {
2273 if (file_desc.objects_last_page == file_desc.objects_per_page)
2274 add_varray_page (&file_desc);
2275
2276 fil_ptr = cur_file_ptr =
2277 &file_desc.last->datum->file[file_desc.objects_last_page++];
2278 *fil_ptr = init_file;
2279
2280 fil_ptr->file_index = current_file_idx++;
2281 ++file_desc.num_allocated;
2282
2283 fil_ptr->fake = fake;
2284
2285 /* Allocate the string hash table. */
2286 fil_ptr->str_hash = hash_new ();
2287
2288 /* Make sure 0 byte in string table is null */
2289 add_string (&fil_ptr->strings,
2290 fil_ptr->str_hash,
2291 "",
2292 (shash_t **)0);
2293
2294 if (strlen (file_name) > PAGE_USIZE - 2)
2295 as_fatal (_("filename goes over one page boundary"));
2296
2297 /* Push the start of the filename. We assume that the filename
2298 will be stored at string offset 1. */
2299 (void) add_ecoff_symbol (file_name, st_File, sc_Text,
2300 (symbolS *) NULL, (bfd_vma) 0,
2301 (symint_t) 0, (symint_t) 0);
2302 fil_ptr->fdr.rss = 1;
2303 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1];
2304
2305 /* Update the linked list of file descriptors. */
2306 *last_file_ptr = fil_ptr;
2307 last_file_ptr = &fil_ptr->next_file;
2308
2309 /* Add void & int types to the file (void should be first to catch
2310 errant 0's within the index fields). */
2311 fil_ptr->void_type = add_aux_sym_tir (&void_type_info,
2312 hash_yes,
2313 &cur_file_ptr->thash_head[0]);
2314
2315 fil_ptr->int_type = add_aux_sym_tir (&int_type_info,
2316 hash_yes,
2317 &cur_file_ptr->thash_head[0]);
2318 }
2319 }
2320
2321 /* This function is called when the assembler notices a preprocessor
2322 directive switching to a new file. This will not happen in
2323 compiler output, only in hand coded assembler. */
2324
2325 void
2326 ecoff_new_file (const char *name, int appfile ATTRIBUTE_UNUSED)
2327 {
2328 if (cur_file_ptr != NULL && filename_cmp (cur_file_ptr->name, name) == 0)
2329 return;
2330 add_file (name, 0, 0);
2331
2332 /* This is a hand coded assembler file, so automatically turn on
2333 debugging information. */
2334 if (debug_type == DEBUG_UNSPECIFIED)
2335 debug_type = DEBUG_ECOFF;
2336 }
2337 \f
2338 #ifdef ECOFF_DEBUG
2339
2340 /* Convert storage class to string. */
2341
2342 static char *
2343 sc_to_string (storage_class)
2344 sc_t storage_class;
2345 {
2346 switch (storage_class)
2347 {
2348 case sc_Nil: return "Nil,";
2349 case sc_Text: return "Text,";
2350 case sc_Data: return "Data,";
2351 case sc_Bss: return "Bss,";
2352 case sc_Register: return "Register,";
2353 case sc_Abs: return "Abs,";
2354 case sc_Undefined: return "Undefined,";
2355 case sc_CdbLocal: return "CdbLocal,";
2356 case sc_Bits: return "Bits,";
2357 case sc_CdbSystem: return "CdbSystem,";
2358 case sc_RegImage: return "RegImage,";
2359 case sc_Info: return "Info,";
2360 case sc_UserStruct: return "UserStruct,";
2361 case sc_SData: return "SData,";
2362 case sc_SBss: return "SBss,";
2363 case sc_RData: return "RData,";
2364 case sc_Var: return "Var,";
2365 case sc_Common: return "Common,";
2366 case sc_SCommon: return "SCommon,";
2367 case sc_VarRegister: return "VarRegister,";
2368 case sc_Variant: return "Variant,";
2369 case sc_SUndefined: return "SUndefined,";
2370 case sc_Init: return "Init,";
2371 case sc_Max: return "Max,";
2372 }
2373
2374 return "???,";
2375 }
2376
2377 #endif /* DEBUG */
2378 \f
2379 #ifdef ECOFF_DEBUG
2380
2381 /* Convert symbol type to string. */
2382
2383 static char *
2384 st_to_string (symbol_type)
2385 st_t symbol_type;
2386 {
2387 switch (symbol_type)
2388 {
2389 case st_Nil: return "Nil,";
2390 case st_Global: return "Global,";
2391 case st_Static: return "Static,";
2392 case st_Param: return "Param,";
2393 case st_Local: return "Local,";
2394 case st_Label: return "Label,";
2395 case st_Proc: return "Proc,";
2396 case st_Block: return "Block,";
2397 case st_End: return "End,";
2398 case st_Member: return "Member,";
2399 case st_Typedef: return "Typedef,";
2400 case st_File: return "File,";
2401 case st_RegReloc: return "RegReloc,";
2402 case st_Forward: return "Forward,";
2403 case st_StaticProc: return "StaticProc,";
2404 case st_Constant: return "Constant,";
2405 case st_Str: return "String,";
2406 case st_Number: return "Number,";
2407 case st_Expr: return "Expr,";
2408 case st_Type: return "Type,";
2409 case st_Max: return "Max,";
2410 }
2411
2412 return "???,";
2413 }
2414
2415 #endif /* DEBUG */
2416 \f
2417 /* Parse .begin directives which have a label as the first argument
2418 which gives the location of the start of the block. */
2419
2420 void
2421 ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED)
2422 {
2423 char *name;
2424 char name_end;
2425
2426 if (cur_file_ptr == (efdr_t *) NULL)
2427 {
2428 as_warn (_(".begin directive without a preceding .file directive"));
2429 demand_empty_rest_of_line ();
2430 return;
2431 }
2432
2433 if (cur_proc_ptr == (proc_t *) NULL)
2434 {
2435 as_warn (_(".begin directive without a preceding .ent directive"));
2436 demand_empty_rest_of_line ();
2437 return;
2438 }
2439
2440 name = input_line_pointer;
2441 name_end = get_symbol_end ();
2442
2443 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text,
2444 symbol_find_or_make (name),
2445 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2446
2447 *input_line_pointer = name_end;
2448
2449 /* The line number follows, but we don't use it. */
2450 (void) get_absolute_expression ();
2451 demand_empty_rest_of_line ();
2452 }
2453 \f
2454 /* Parse .bend directives which have a label as the first argument
2455 which gives the location of the end of the block. */
2456
2457 void
2458 ecoff_directive_bend (int ignore ATTRIBUTE_UNUSED)
2459 {
2460 char *name;
2461 char name_end;
2462 symbolS *endsym;
2463
2464 if (cur_file_ptr == (efdr_t *) NULL)
2465 {
2466 as_warn (_(".bend directive without a preceding .file directive"));
2467 demand_empty_rest_of_line ();
2468 return;
2469 }
2470
2471 if (cur_proc_ptr == (proc_t *) NULL)
2472 {
2473 as_warn (_(".bend directive without a preceding .ent directive"));
2474 demand_empty_rest_of_line ();
2475 return;
2476 }
2477
2478 name = input_line_pointer;
2479 name_end = get_symbol_end ();
2480
2481 /* The value is the distance between the .bend directive and the
2482 corresponding symbol. We fill in the offset when we write out
2483 the symbol. */
2484 endsym = symbol_find (name);
2485 if (endsym == (symbolS *) NULL)
2486 as_warn (_(".bend directive names unknown symbol"));
2487 else
2488 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym,
2489 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2490
2491 *input_line_pointer = name_end;
2492
2493 /* The line number follows, but we don't use it. */
2494 (void) get_absolute_expression ();
2495 demand_empty_rest_of_line ();
2496 }
2497 \f
2498 /* COFF debugging information is provided as a series of directives
2499 (.def, .scl, etc.). We build up information as we read the
2500 directives in the following static variables, and file it away when
2501 we reach the .endef directive. */
2502 static char *coff_sym_name;
2503 static type_info_t coff_type;
2504 static sc_t coff_storage_class;
2505 static st_t coff_symbol_typ;
2506 static int coff_is_function;
2507 static char *coff_tag;
2508 static valueT coff_value;
2509 static symbolS *coff_sym_value;
2510 static bfd_vma coff_sym_addend;
2511 static int coff_inside_enumeration;
2512
2513 /* Handle a .def directive: start defining a symbol. */
2514
2515 void
2516 ecoff_directive_def (int ignore ATTRIBUTE_UNUSED)
2517 {
2518 char *name;
2519 char name_end;
2520
2521 ecoff_debugging_seen = 1;
2522
2523 SKIP_WHITESPACE ();
2524
2525 name = input_line_pointer;
2526 name_end = get_symbol_end ();
2527
2528 if (coff_sym_name != (char *) NULL)
2529 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored"));
2530 else if (*name == '\0')
2531 as_warn (_("empty symbol name in .def; ignored"));
2532 else
2533 {
2534 if (coff_sym_name != (char *) NULL)
2535 free (coff_sym_name);
2536 if (coff_tag != (char *) NULL)
2537 free (coff_tag);
2538
2539 coff_sym_name = xstrdup (name);
2540 coff_type = type_info_init;
2541 coff_storage_class = sc_Nil;
2542 coff_symbol_typ = st_Nil;
2543 coff_is_function = 0;
2544 coff_tag = (char *) NULL;
2545 coff_value = 0;
2546 coff_sym_value = (symbolS *) NULL;
2547 coff_sym_addend = 0;
2548 }
2549
2550 *input_line_pointer = name_end;
2551
2552 demand_empty_rest_of_line ();
2553 }
2554
2555 /* Handle a .dim directive, used to give dimensions for an array. The
2556 arguments are comma separated numbers. mips-tfile assumes that
2557 there will not be more than 6 dimensions, and gdb won't read any
2558 more than that anyhow, so I will also make that assumption. */
2559
2560 void
2561 ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED)
2562 {
2563 int dimens[N_TQ];
2564 int i;
2565
2566 if (coff_sym_name == (char *) NULL)
2567 {
2568 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored"));
2569 demand_empty_rest_of_line ();
2570 return;
2571 }
2572
2573 for (i = 0; i < N_TQ; i++)
2574 {
2575 SKIP_WHITESPACE ();
2576 dimens[i] = get_absolute_expression ();
2577 if (*input_line_pointer == ',')
2578 ++input_line_pointer;
2579 else
2580 {
2581 if (*input_line_pointer != '\n'
2582 && *input_line_pointer != ';')
2583 as_warn (_("badly formed .dim directive"));
2584 break;
2585 }
2586 }
2587
2588 if (i == N_TQ)
2589 --i;
2590
2591 /* The dimensions are stored away in reverse order. */
2592 for (; i >= 0; i--)
2593 {
2594 if (coff_type.num_dims >= N_TQ)
2595 {
2596 as_warn (_("too many .dim entries"));
2597 break;
2598 }
2599 coff_type.dimensions[coff_type.num_dims] = dimens[i];
2600 ++coff_type.num_dims;
2601 }
2602
2603 demand_empty_rest_of_line ();
2604 }
2605
2606 /* Handle a .scl directive, which sets the COFF storage class of the
2607 symbol. */
2608
2609 void
2610 ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED)
2611 {
2612 long val;
2613
2614 if (coff_sym_name == (char *) NULL)
2615 {
2616 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored"));
2617 demand_empty_rest_of_line ();
2618 return;
2619 }
2620
2621 val = get_absolute_expression ();
2622
2623 coff_symbol_typ = map_coff_sym_type[val];
2624 coff_storage_class = map_coff_storage[val];
2625
2626 demand_empty_rest_of_line ();
2627 }
2628
2629 /* Handle a .size directive. For some reason mips-tfile.c thinks that
2630 .size can have multiple arguments. We humor it, although gcc will
2631 never generate more than one argument. */
2632
2633 void
2634 ecoff_directive_size (int ignore ATTRIBUTE_UNUSED)
2635 {
2636 int sizes[N_TQ];
2637 int i;
2638
2639 if (coff_sym_name == (char *) NULL)
2640 {
2641 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored"));
2642 demand_empty_rest_of_line ();
2643 return;
2644 }
2645
2646 for (i = 0; i < N_TQ; i++)
2647 {
2648 SKIP_WHITESPACE ();
2649 sizes[i] = get_absolute_expression ();
2650 if (*input_line_pointer == ',')
2651 ++input_line_pointer;
2652 else
2653 {
2654 if (*input_line_pointer != '\n'
2655 && *input_line_pointer != ';')
2656 as_warn (_("badly formed .size directive"));
2657 break;
2658 }
2659 }
2660
2661 if (i == N_TQ)
2662 --i;
2663
2664 /* The sizes are stored away in reverse order. */
2665 for (; i >= 0; i--)
2666 {
2667 if (coff_type.num_sizes >= N_TQ)
2668 {
2669 as_warn (_("too many .size entries"));
2670 break;
2671 }
2672 coff_type.sizes[coff_type.num_sizes] = sizes[i];
2673 ++coff_type.num_sizes;
2674 }
2675
2676 demand_empty_rest_of_line ();
2677 }
2678
2679 /* Handle the .type directive, which gives the COFF type of the
2680 symbol. */
2681
2682 void
2683 ecoff_directive_type (int ignore ATTRIBUTE_UNUSED)
2684 {
2685 long val;
2686 tq_t *tq_ptr;
2687 tq_t *tq_shft;
2688
2689 if (coff_sym_name == (char *) NULL)
2690 {
2691 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored"));
2692 demand_empty_rest_of_line ();
2693 return;
2694 }
2695
2696 val = get_absolute_expression ();
2697
2698 coff_type.orig_type = BTYPE (val);
2699 coff_type.basic_type = map_coff_types[coff_type.orig_type];
2700
2701 tq_ptr = &coff_type.type_qualifiers[N_TQ];
2702 while (val & ~N_BTMASK)
2703 {
2704 if (tq_ptr == &coff_type.type_qualifiers[0])
2705 {
2706 /* FIXME: We could handle this by setting the continued bit.
2707 There would still be a limit: the .type argument can not
2708 be infinite. */
2709 as_warn (_("the type of %s is too complex; it will be simplified"),
2710 coff_sym_name);
2711 break;
2712 }
2713 if (ISPTR (val))
2714 *--tq_ptr = tq_Ptr;
2715 else if (ISFCN (val))
2716 *--tq_ptr = tq_Proc;
2717 else if (ISARY (val))
2718 *--tq_ptr = tq_Array;
2719 else
2720 as_fatal (_("Unrecognized .type argument"));
2721
2722 val = DECREF (val);
2723 }
2724
2725 tq_shft = &coff_type.type_qualifiers[0];
2726 while (tq_ptr != &coff_type.type_qualifiers[N_TQ])
2727 *tq_shft++ = *tq_ptr++;
2728
2729 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc)
2730 {
2731 /* If this is a function, ignore it, so that we don't get two
2732 entries (one from the .ent, and one for the .def that
2733 precedes it). Save the type information so that the end
2734 block can properly add it after the begin block index. For
2735 MIPS knows what reason, we must strip off the function type
2736 at this point. */
2737 coff_is_function = 1;
2738 tq_shft[-1] = tq_Nil;
2739 }
2740
2741 while (tq_shft != &coff_type.type_qualifiers[N_TQ])
2742 *tq_shft++ = tq_Nil;
2743
2744 demand_empty_rest_of_line ();
2745 }
2746
2747 /* Handle the .tag directive, which gives the name of a structure,
2748 union or enum. */
2749
2750 void
2751 ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED)
2752 {
2753 char *name;
2754 char name_end;
2755
2756 if (coff_sym_name == (char *) NULL)
2757 {
2758 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored"));
2759 demand_empty_rest_of_line ();
2760 return;
2761 }
2762
2763 name = input_line_pointer;
2764 name_end = get_symbol_end ();
2765
2766 coff_tag = xstrdup (name);
2767
2768 *input_line_pointer = name_end;
2769
2770 demand_empty_rest_of_line ();
2771 }
2772
2773 /* Handle the .val directive, which gives the value of the symbol. It
2774 may be the name of a static or global symbol. */
2775
2776 void
2777 ecoff_directive_val (int ignore ATTRIBUTE_UNUSED)
2778 {
2779 expressionS exp;
2780
2781 if (coff_sym_name == (char *) NULL)
2782 {
2783 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored"));
2784 demand_empty_rest_of_line ();
2785 return;
2786 }
2787
2788 expression (&exp);
2789 if (exp.X_op != O_constant && exp.X_op != O_symbol)
2790 {
2791 as_bad (_(".val expression is too complex"));
2792 demand_empty_rest_of_line ();
2793 return;
2794 }
2795
2796 if (exp.X_op == O_constant)
2797 coff_value = exp.X_add_number;
2798 else
2799 {
2800 coff_sym_value = exp.X_add_symbol;
2801 coff_sym_addend = exp.X_add_number;
2802 }
2803
2804 demand_empty_rest_of_line ();
2805 }
2806
2807 /* Handle the .endef directive, which terminates processing of COFF
2808 debugging information for a symbol. */
2809
2810 void
2811 ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED)
2812 {
2813 char *name;
2814 symint_t indx;
2815 localsym_t *sym;
2816
2817 demand_empty_rest_of_line ();
2818
2819 if (coff_sym_name == (char *) NULL)
2820 {
2821 as_warn (_(".endef pseudo-op used before .def; ignored"));
2822 return;
2823 }
2824
2825 name = coff_sym_name;
2826 coff_sym_name = (char *) NULL;
2827
2828 /* If the symbol is a static or external, we have already gotten the
2829 appropriate type and class, so make sure we don't override those
2830 values. This is needed because there are some type and classes
2831 that are not in COFF, such as short data, etc. */
2832 if (coff_sym_value != (symbolS *) NULL)
2833 {
2834 coff_symbol_typ = st_Nil;
2835 coff_storage_class = sc_Nil;
2836 }
2837
2838 coff_type.extra_sizes = coff_tag != (char *) NULL;
2839 if (coff_type.num_dims > 0)
2840 {
2841 int diff = coff_type.num_dims - coff_type.num_sizes;
2842 int i = coff_type.num_dims - 1;
2843 int j;
2844
2845 if (coff_type.num_sizes != 1 || diff < 0)
2846 {
2847 as_warn (_("bad COFF debugging information"));
2848 return;
2849 }
2850
2851 /* If this is an array, make sure the same number of dimensions
2852 and sizes were passed, creating extra sizes for multiply
2853 dimensioned arrays if not passed. */
2854 coff_type.extra_sizes = 0;
2855 if (diff)
2856 {
2857 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1;
2858 while (j >= 0)
2859 {
2860 coff_type.sizes[j] = (((j - diff) >= 0)
2861 ? coff_type.sizes[j - diff]
2862 : 0);
2863 j--;
2864 }
2865
2866 coff_type.num_sizes = i + 1;
2867 for (i--; i >= 0; i--)
2868 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0
2869 ? 0
2870 : (coff_type.sizes[i + 1]
2871 / coff_type.dimensions[i + 1]));
2872 }
2873 }
2874 else if (coff_symbol_typ == st_Member
2875 && coff_type.num_sizes - coff_type.extra_sizes == 1)
2876 {
2877 /* Is this a bitfield? This is indicated by a structure member
2878 having a size field that isn't an array. */
2879 coff_type.bitfield = 1;
2880 }
2881
2882 /* Except for enumeration members & begin/ending of scopes, put the
2883 type word in the aux. symbol table. */
2884 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End)
2885 indx = 0;
2886 else if (coff_inside_enumeration)
2887 indx = cur_file_ptr->void_type;
2888 else
2889 {
2890 if (coff_type.basic_type == bt_Struct
2891 || coff_type.basic_type == bt_Union
2892 || coff_type.basic_type == bt_Enum)
2893 {
2894 if (coff_tag == (char *) NULL)
2895 {
2896 as_warn (_("no tag specified for %s"), name);
2897 return;
2898 }
2899
2900 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL,
2901 coff_type.basic_type);
2902 }
2903
2904 if (coff_is_function)
2905 {
2906 last_func_type_info = coff_type;
2907 last_func_sym_value = coff_sym_value;
2908 return;
2909 }
2910
2911 indx = add_aux_sym_tir (&coff_type,
2912 hash_yes,
2913 &cur_file_ptr->thash_head[0]);
2914 }
2915
2916 /* Do any last minute adjustments that are necessary. */
2917 switch (coff_symbol_typ)
2918 {
2919 default:
2920 break;
2921
2922 /* For the beginning of structs, unions, and enumerations, the
2923 size info needs to be passed in the value field. */
2924 case st_Block:
2925 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes
2926 != 1)
2927 {
2928 as_warn (_("bad COFF debugging information"));
2929 return;
2930 }
2931 else
2932 coff_value = coff_type.sizes[0];
2933
2934 coff_inside_enumeration = (coff_type.orig_type == T_ENUM);
2935 break;
2936
2937 /* For the end of structs, unions, and enumerations, omit the
2938 name which is always ".eos". This needs to be done last, so
2939 that any error reporting above gives the correct name. */
2940 case st_End:
2941 free (name);
2942 name = (char *) NULL;
2943 coff_value = 0;
2944 coff_inside_enumeration = 0;
2945 break;
2946
2947 /* Members of structures and unions that aren't bitfields, need
2948 to adjust the value from a byte offset to a bit offset.
2949 Members of enumerations do not have the value adjusted, and
2950 can be distinguished by indx == indexNil. For enumerations,
2951 update the maximum enumeration value. */
2952 case st_Member:
2953 if (! coff_type.bitfield && ! coff_inside_enumeration)
2954 coff_value *= 8;
2955
2956 break;
2957 }
2958
2959 /* Add the symbol. */
2960 sym = add_ecoff_symbol (name,
2961 coff_symbol_typ,
2962 coff_storage_class,
2963 coff_sym_value,
2964 coff_sym_addend,
2965 (symint_t) coff_value,
2966 indx);
2967
2968 /* deal with struct, union, and enum tags. */
2969 if (coff_symbol_typ == st_Block)
2970 {
2971 /* Create or update the tag information. */
2972 tag_t *tag_ptr = get_tag (name,
2973 sym,
2974 coff_type.basic_type);
2975 forward_t **pf;
2976
2977 /* Remember any forward references. */
2978 for (pf = &sym->forward_ref;
2979 *pf != (forward_t *) NULL;
2980 pf = &(*pf)->next)
2981 ;
2982 *pf = tag_ptr->forward_ref;
2983 tag_ptr->forward_ref = (forward_t *) NULL;
2984 }
2985 }
2986 \f
2987 /* Parse .end directives. */
2988
2989 void
2990 ecoff_directive_end (int ignore ATTRIBUTE_UNUSED)
2991 {
2992 char *name;
2993 char name_end;
2994 symbolS *ent;
2995
2996 if (cur_file_ptr == (efdr_t *) NULL)
2997 {
2998 as_warn (_(".end directive without a preceding .file directive"));
2999 demand_empty_rest_of_line ();
3000 return;
3001 }
3002
3003 if (cur_proc_ptr == (proc_t *) NULL)
3004 {
3005 as_warn (_(".end directive without a preceding .ent directive"));
3006 demand_empty_rest_of_line ();
3007 return;
3008 }
3009
3010 name = input_line_pointer;
3011 name_end = get_symbol_end ();
3012
3013 if (name == input_line_pointer)
3014 {
3015 as_warn (_(".end directive has no name"));
3016 *input_line_pointer = name_end;
3017 demand_empty_rest_of_line ();
3018 return;
3019 }
3020
3021 /* The value is the distance between the .end directive and the
3022 corresponding symbol. We create a fake symbol to hold the
3023 current location, and put in the offset when we write out the
3024 symbol. */
3025 ent = symbol_find (name);
3026 if (ent == (symbolS *) NULL)
3027 as_warn (_(".end directive names unknown symbol"));
3028 else
3029 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text,
3030 symbol_new ("L0\001", now_seg,
3031 (valueT) frag_now_fix (),
3032 frag_now),
3033 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
3034
3035 cur_proc_ptr = (proc_t *) NULL;
3036
3037 *input_line_pointer = name_end;
3038 demand_empty_rest_of_line ();
3039 }
3040 \f
3041 /* Parse .ent directives. */
3042
3043 void
3044 ecoff_directive_ent (int ignore ATTRIBUTE_UNUSED)
3045 {
3046 char *name;
3047 char name_end;
3048
3049 if (cur_file_ptr == (efdr_t *) NULL)
3050 add_file ((const char *) NULL, 0, 1);
3051
3052 if (cur_proc_ptr != (proc_t *) NULL)
3053 {
3054 as_warn (_("second .ent directive found before .end directive"));
3055 demand_empty_rest_of_line ();
3056 return;
3057 }
3058
3059 name = input_line_pointer;
3060 name_end = get_symbol_end ();
3061
3062 if (name == input_line_pointer)
3063 {
3064 as_warn (_(".ent directive has no name"));
3065 *input_line_pointer = name_end;
3066 demand_empty_rest_of_line ();
3067 return;
3068 }
3069
3070 add_procedure (name);
3071
3072 *input_line_pointer = name_end;
3073
3074 /* The .ent directive is sometimes followed by a number. I'm not
3075 really sure what the number means. I don't see any way to store
3076 the information in the PDR. The Irix 4 assembler seems to ignore
3077 the information. */
3078 SKIP_WHITESPACE ();
3079 if (*input_line_pointer == ',')
3080 {
3081 ++input_line_pointer;
3082 SKIP_WHITESPACE ();
3083 }
3084 if (ISDIGIT (*input_line_pointer)
3085 || *input_line_pointer == '-')
3086 (void) get_absolute_expression ();
3087
3088 demand_empty_rest_of_line ();
3089 }
3090 \f
3091 /* Parse .extern directives. */
3092
3093 void
3094 ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED)
3095 {
3096 char *name;
3097 int c;
3098 symbolS *symbolp;
3099 valueT size;
3100
3101 name = input_line_pointer;
3102 c = get_symbol_end ();
3103 symbolp = symbol_find_or_make (name);
3104 *input_line_pointer = c;
3105
3106 S_SET_EXTERNAL (symbolp);
3107
3108 if (*input_line_pointer == ',')
3109 ++input_line_pointer;
3110 size = get_absolute_expression ();
3111
3112 symbol_get_obj (symbolp)->ecoff_extern_size = size;
3113 }
3114 \f
3115 /* Parse .file directives. */
3116
3117 void
3118 ecoff_directive_file (int ignore ATTRIBUTE_UNUSED)
3119 {
3120 int indx;
3121 char *name;
3122 int len;
3123
3124 if (cur_proc_ptr != (proc_t *) NULL)
3125 {
3126 as_warn (_("no way to handle .file within .ent/.end section"));
3127 demand_empty_rest_of_line ();
3128 return;
3129 }
3130
3131 indx = (int) get_absolute_expression ();
3132
3133 /* FIXME: we don't have to save the name here. */
3134 name = demand_copy_C_string (&len);
3135
3136 add_file (name, indx - 1, 0);
3137
3138 demand_empty_rest_of_line ();
3139 }
3140 \f
3141 /* Parse .fmask directives. */
3142
3143 void
3144 ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED)
3145 {
3146 long val;
3147
3148 if (cur_proc_ptr == (proc_t *) NULL)
3149 {
3150 as_warn (_(".fmask outside of .ent"));
3151 demand_empty_rest_of_line ();
3152 return;
3153 }
3154
3155 if (get_absolute_expression_and_terminator (&val) != ',')
3156 {
3157 as_warn (_("bad .fmask directive"));
3158 --input_line_pointer;
3159 demand_empty_rest_of_line ();
3160 return;
3161 }
3162
3163 cur_proc_ptr->pdr.fregmask = val;
3164 cur_proc_ptr->pdr.fregoffset = get_absolute_expression ();
3165
3166 demand_empty_rest_of_line ();
3167 }
3168 \f
3169 /* Parse .frame directives. */
3170
3171 void
3172 ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED)
3173 {
3174 long val;
3175
3176 if (cur_proc_ptr == (proc_t *) NULL)
3177 {
3178 as_warn (_(".frame outside of .ent"));
3179 demand_empty_rest_of_line ();
3180 return;
3181 }
3182
3183 cur_proc_ptr->pdr.framereg = tc_get_register (1);
3184
3185 SKIP_WHITESPACE ();
3186 if (*input_line_pointer++ != ','
3187 || get_absolute_expression_and_terminator (&val) != ',')
3188 {
3189 as_warn (_("bad .frame directive"));
3190 --input_line_pointer;
3191 demand_empty_rest_of_line ();
3192 return;
3193 }
3194
3195 cur_proc_ptr->pdr.frameoffset = val;
3196
3197 cur_proc_ptr->pdr.pcreg = tc_get_register (0);
3198
3199 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to
3200 Sandro. I don't yet know where this value should be stored, if
3201 anywhere. Don't call demand_empty_rest_of_line (). */
3202 s_ignore (42);
3203 }
3204 \f
3205 /* Parse .mask directives. */
3206
3207 void
3208 ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED)
3209 {
3210 long val;
3211
3212 if (cur_proc_ptr == (proc_t *) NULL)
3213 {
3214 as_warn (_(".mask outside of .ent"));
3215 demand_empty_rest_of_line ();
3216 return;
3217 }
3218
3219 if (get_absolute_expression_and_terminator (&val) != ',')
3220 {
3221 as_warn (_("bad .mask directive"));
3222 --input_line_pointer;
3223 demand_empty_rest_of_line ();
3224 return;
3225 }
3226
3227 cur_proc_ptr->pdr.regmask = val;
3228 cur_proc_ptr->pdr.regoffset = get_absolute_expression ();
3229
3230 demand_empty_rest_of_line ();
3231 }
3232 \f
3233 /* Parse .loc directives. */
3234
3235 void
3236 ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED)
3237 {
3238 lineno_list_t *list;
3239 symint_t lineno;
3240
3241 if (cur_file_ptr == (efdr_t *) NULL)
3242 {
3243 as_warn (_(".loc before .file"));
3244 demand_empty_rest_of_line ();
3245 return;
3246 }
3247
3248 if (now_seg != text_section)
3249 {
3250 as_warn (_(".loc outside of .text"));
3251 demand_empty_rest_of_line ();
3252 return;
3253 }
3254
3255 /* Skip the file number. */
3256 SKIP_WHITESPACE ();
3257 get_absolute_expression ();
3258 SKIP_WHITESPACE ();
3259
3260 lineno = get_absolute_expression ();
3261
3262 #ifndef NO_LISTING
3263 if (listing)
3264 listing_source_line (lineno);
3265 #endif
3266
3267 /* If we're building stabs, then output a special label rather than
3268 ECOFF line number info. */
3269 if (stabs_seen)
3270 {
3271 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text,
3272 symbol_new ("L0\001", now_seg,
3273 (valueT) frag_now_fix (),
3274 frag_now),
3275 (bfd_vma) 0, 0, lineno);
3276 return;
3277 }
3278
3279 list = allocate_lineno_list ();
3280
3281 list->next = (lineno_list_t *) NULL;
3282 list->file = cur_file_ptr;
3283 list->proc = cur_proc_ptr;
3284 list->frag = frag_now;
3285 list->paddr = frag_now_fix ();
3286 list->lineno = lineno;
3287
3288 /* We don't want to merge files which have line numbers. */
3289 cur_file_ptr->fdr.fMerge = 0;
3290
3291 /* A .loc directive will sometimes appear before a .ent directive,
3292 which means that cur_proc_ptr will be NULL here. Arrange to
3293 patch this up. */
3294 if (cur_proc_ptr == (proc_t *) NULL)
3295 {
3296 lineno_list_t **pl;
3297
3298 pl = &noproc_lineno;
3299 while (*pl != (lineno_list_t *) NULL)
3300 pl = &(*pl)->next;
3301 *pl = list;
3302 }
3303 else
3304 {
3305 last_lineno = list;
3306 *last_lineno_ptr = list;
3307 last_lineno_ptr = &list->next;
3308 }
3309 }
3310
3311 /* The MIPS assembler sometimes inserts nop instructions in the
3312 instruction stream. When this happens, we must patch up the .loc
3313 information so that it points to the instruction after the nop. */
3314
3315 void
3316 ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset)
3317 {
3318 if (last_lineno != NULL
3319 && last_lineno->frag == old_frag
3320 && last_lineno->paddr == old_frag_offset)
3321 {
3322 last_lineno->frag = frag_now;
3323 last_lineno->paddr = frag_now_fix ();
3324 }
3325 }
3326 \f
3327 /* Make sure the @stabs symbol is emitted. */
3328
3329 static void
3330 mark_stabs (int ignore ATTRIBUTE_UNUSED)
3331 {
3332 if (! stabs_seen)
3333 {
3334 /* Add a dummy @stabs dymbol. */
3335 stabs_seen = 1;
3336 (void) add_ecoff_symbol (stabs_symbol, st_Nil, sc_Info,
3337 (symbolS *) NULL,
3338 (bfd_vma) 0, (symint_t) -1,
3339 ECOFF_MARK_STAB (0));
3340 }
3341 }
3342 \f
3343 /* Parse .weakext directives. */
3344 #ifndef TC_MIPS
3345 /* For TC_MIPS use the version in tc-mips.c. */
3346 void
3347 ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED)
3348 {
3349 char *name;
3350 int c;
3351 symbolS *symbolP;
3352 expressionS exp;
3353
3354 name = input_line_pointer;
3355 c = get_symbol_end ();
3356 symbolP = symbol_find_or_make (name);
3357 *input_line_pointer = c;
3358
3359 SKIP_WHITESPACE ();
3360
3361 if (*input_line_pointer == ',')
3362 {
3363 if (S_IS_DEFINED (symbolP))
3364 {
3365 as_bad (_("symbol `%s' is already defined"),
3366 S_GET_NAME (symbolP));
3367 ignore_rest_of_line ();
3368 return;
3369 }
3370
3371 ++input_line_pointer;
3372 SKIP_WHITESPACE ();
3373 if (! is_end_of_line[(unsigned char) *input_line_pointer])
3374 {
3375 expression (&exp);
3376 if (exp.X_op != O_symbol)
3377 {
3378 as_bad (_("bad .weakext directive"));
3379 ignore_rest_of_line ();
3380 return;
3381 }
3382 symbol_set_value_expression (symbolP, &exp);
3383 }
3384 }
3385
3386 S_SET_WEAK (symbolP);
3387
3388 demand_empty_rest_of_line ();
3389 }
3390 #endif /* not TC_MIPS */
3391 \f
3392 /* Handle .stabs directives. The actual parsing routine is done by a
3393 generic routine. This routine is called via OBJ_PROCESS_STAB.
3394 When this is called, input_line_pointer will be pointing at the
3395 value field of the stab.
3396
3397 .stabs directives have five fields:
3398 "string" a string, encoding the type information.
3399 code a numeric code, defined in <stab.h>
3400 0 a zero
3401 desc a zero or line number
3402 value a numeric value or an address.
3403
3404 If the value is relocatable, we transform this into:
3405 iss points as an index into string space
3406 value value from lookup of the name
3407 st st from lookup of the name
3408 sc sc from lookup of the name
3409 index code|CODE_MASK
3410
3411 If the value is not relocatable, we transform this into:
3412 iss points as an index into string space
3413 value value
3414 st st_Nil
3415 sc sc_Nil
3416 index code|CODE_MASK
3417
3418 .stabn directives have four fields (string is null):
3419 code a numeric code, defined in <stab.h>
3420 0 a zero
3421 desc a zero or a line number
3422 value a numeric value or an address. */
3423
3424 void
3425 ecoff_stab (segT sec ATTRIBUTE_UNUSED,
3426 int what,
3427 const char *string,
3428 int type,
3429 int other,
3430 int desc)
3431 {
3432 efdr_t *save_file_ptr = cur_file_ptr;
3433 symbolS *sym;
3434 symint_t value;
3435 bfd_vma addend;
3436 st_t st;
3437 sc_t sc;
3438 symint_t indx;
3439 localsym_t *hold = NULL;
3440
3441 ecoff_debugging_seen = 1;
3442
3443 /* We don't handle .stabd. */
3444 if (what != 's' && what != 'n')
3445 {
3446 as_bad (_(".stab%c is not supported"), what);
3447 return;
3448 }
3449
3450 /* A .stabn uses a null name, not an empty string. */
3451 if (what == 'n')
3452 string = NULL;
3453
3454 /* We ignore the other field. */
3455 if (other != 0)
3456 as_warn (_(".stab%c: ignoring non-zero other field"), what);
3457
3458 /* Make sure we have a current file. */
3459 if (cur_file_ptr == (efdr_t *) NULL)
3460 {
3461 add_file ((const char *) NULL, 0, 1);
3462 save_file_ptr = cur_file_ptr;
3463 }
3464
3465 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
3466 signal to gdb. */
3467 if (stabs_seen == 0)
3468 mark_stabs (0);
3469
3470 /* Line number stabs are handled differently, since they have two
3471 values, the line number and the address of the label. We use the
3472 index field (aka desc) to hold the line number, and the value
3473 field to hold the address. The symbol type is st_Label, which
3474 should be different from the other stabs, so that gdb can
3475 recognize it. */
3476 if (type == N_SLINE)
3477 {
3478 SYMR dummy_symr;
3479 char *name;
3480 char name_end;
3481
3482 #ifndef NO_LISTING
3483 if (listing)
3484 listing_source_line ((unsigned int) desc);
3485 #endif
3486
3487 dummy_symr.index = desc;
3488 if (dummy_symr.index != desc)
3489 {
3490 as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"),
3491 desc, what);
3492 return;
3493 }
3494
3495 name = input_line_pointer;
3496 name_end = get_symbol_end ();
3497
3498 sym = symbol_find_or_make (name);
3499 *input_line_pointer = name_end;
3500
3501 value = 0;
3502 addend = 0;
3503 st = st_Label;
3504 sc = sc_Text;
3505 indx = desc;
3506 }
3507 else
3508 {
3509 #ifndef NO_LISTING
3510 if (listing && (type == N_SO || type == N_SOL))
3511 listing_source_file (string);
3512 #endif
3513
3514 if (ISDIGIT (*input_line_pointer)
3515 || *input_line_pointer == '-'
3516 || *input_line_pointer == '+')
3517 {
3518 st = st_Nil;
3519 sc = sc_Nil;
3520 sym = (symbolS *) NULL;
3521 value = get_absolute_expression ();
3522 addend = 0;
3523 }
3524 else if (! is_name_beginner ((unsigned char) *input_line_pointer))
3525 {
3526 as_warn (_("illegal .stab%c directive, bad character"), what);
3527 return;
3528 }
3529 else
3530 {
3531 expressionS exp;
3532
3533 sc = sc_Nil;
3534 st = st_Nil;
3535
3536 expression (&exp);
3537 if (exp.X_op == O_constant)
3538 {
3539 sym = NULL;
3540 value = exp.X_add_number;
3541 addend = 0;
3542 }
3543 else if (exp.X_op == O_symbol)
3544 {
3545 sym = exp.X_add_symbol;
3546 value = 0;
3547 addend = exp.X_add_number;
3548 }
3549 else
3550 {
3551 sym = make_expr_symbol (&exp);
3552 value = 0;
3553 addend = 0;
3554 }
3555 }
3556
3557 indx = ECOFF_MARK_STAB (type);
3558 }
3559
3560 /* Don't store the stabs symbol we are creating as the type of the
3561 ECOFF symbol. We want to compute the type of the ECOFF symbol
3562 independently. */
3563 if (sym != (symbolS *) NULL)
3564 hold = symbol_get_obj (sym)->ecoff_symbol;
3565
3566 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx);
3567
3568 if (sym != (symbolS *) NULL)
3569 symbol_get_obj (sym)->ecoff_symbol = hold;
3570
3571 /* Restore normal file type. */
3572 cur_file_ptr = save_file_ptr;
3573 }
3574 \f
3575 /* Frob an ECOFF symbol. Small common symbols go into a special
3576 .scommon section rather than bfd_com_section. */
3577
3578 void
3579 ecoff_frob_symbol (symbolS *sym)
3580 {
3581 if (S_IS_COMMON (sym)
3582 && S_GET_VALUE (sym) > 0
3583 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput))
3584 {
3585 static asection scom_section;
3586 static asymbol scom_symbol;
3587
3588 /* We must construct a fake section similar to bfd_com_section
3589 but with the name .scommon. */
3590 if (scom_section.name == NULL)
3591 {
3592 scom_section = *bfd_com_section_ptr;
3593 scom_section.name = ".scommon";
3594 scom_section.output_section = &scom_section;
3595 scom_section.symbol = &scom_symbol;
3596 scom_section.symbol_ptr_ptr = &scom_section.symbol;
3597 scom_symbol = *bfd_com_section_ptr->symbol;
3598 scom_symbol.name = ".scommon";
3599 scom_symbol.section = &scom_section;
3600 }
3601 S_SET_SEGMENT (sym, &scom_section);
3602 }
3603
3604 /* Double check weak symbols. */
3605 if (S_IS_WEAK (sym))
3606 {
3607 if (S_IS_COMMON (sym))
3608 as_bad (_("symbol `%s' can not be both weak and common"),
3609 S_GET_NAME (sym));
3610 }
3611 }
3612 \f
3613 /* Add bytes to the symbolic information buffer. */
3614
3615 static char *
3616 ecoff_add_bytes (char **buf,
3617 char **bufend,
3618 char *bufptr,
3619 unsigned long need)
3620 {
3621 unsigned long at;
3622 unsigned long want;
3623
3624 at = bufptr - *buf;
3625 need -= *bufend - bufptr;
3626 if (need < PAGE_SIZE)
3627 need = PAGE_SIZE;
3628 want = (*bufend - *buf) + need;
3629 *buf = (char *) xrealloc (*buf, want);
3630 *bufend = *buf + want;
3631 return *buf + at;
3632 }
3633
3634 /* Adjust the symbolic information buffer to the alignment required
3635 for the ECOFF target debugging information. */
3636
3637 static unsigned long
3638 ecoff_padding_adjust (const struct ecoff_debug_swap *backend,
3639 char **buf,
3640 char **bufend,
3641 unsigned long offset,
3642 char **bufptrptr)
3643 {
3644 bfd_size_type align;
3645
3646 align = backend->debug_align;
3647 if ((offset & (align - 1)) != 0)
3648 {
3649 unsigned long add;
3650
3651 add = align - (offset & (align - 1));
3652 if ((unsigned long) (*bufend - (*buf + offset)) < add)
3653 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add);
3654 memset (*buf + offset, 0, add);
3655 offset += add;
3656 if (bufptrptr != (char **) NULL)
3657 *bufptrptr = *buf + offset;
3658 }
3659
3660 return offset;
3661 }
3662
3663 /* Build the line number information. */
3664
3665 static unsigned long
3666 ecoff_build_lineno (const struct ecoff_debug_swap *backend,
3667 char **buf,
3668 char **bufend,
3669 unsigned long offset,
3670 long *linecntptr)
3671 {
3672 char *bufptr;
3673 register lineno_list_t *l;
3674 lineno_list_t *last;
3675 efdr_t *file;
3676 proc_t *proc;
3677 unsigned long c;
3678 long iline;
3679 long totcount;
3680 lineno_list_t first;
3681 lineno_list_t *local_first_lineno = first_lineno;
3682
3683 if (linecntptr != (long *) NULL)
3684 *linecntptr = 0;
3685
3686 bufptr = *buf + offset;
3687
3688 file = (efdr_t *) NULL;
3689 proc = (proc_t *) NULL;
3690 last = (lineno_list_t *) NULL;
3691 c = offset;
3692 iline = 0;
3693 totcount = 0;
3694
3695 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to
3696 remove this code. */
3697 /* For some reason the address of the first procedure is ignored
3698 when reading line numbers. This doesn't matter if the address of
3699 the first procedure is 0, but when gcc is generating MIPS
3700 embedded PIC code, it will put strings in the .text section
3701 before the first procedure. We cope by inserting a dummy line if
3702 the address of the first procedure is not 0. Hopefully this
3703 won't screw things up too badly.
3704
3705 Don't do this for ECOFF assembly source line numbers. They work
3706 without this extra attention. */
3707 if (debug_type != DEBUG_ECOFF
3708 && first_proc_ptr != (proc_t *) NULL
3709 && local_first_lineno != (lineno_list_t *) NULL
3710 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym)
3711 + bfd_get_section_vma (stdoutput,
3712 S_GET_SEGMENT (first_proc_ptr->sym->as_sym)))
3713 != 0))
3714 {
3715 first.file = local_first_lineno->file;
3716 first.proc = local_first_lineno->proc;
3717 first.frag = &zero_address_frag;
3718 first.paddr = 0;
3719 first.lineno = 0;
3720
3721 first.next = local_first_lineno;
3722 local_first_lineno = &first;
3723 }
3724
3725 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next)
3726 {
3727 long count;
3728 long delta;
3729
3730 /* Get the offset to the memory address of the next line number
3731 (in words). Do this first, so that we can skip ahead to the
3732 next useful line number entry. */
3733 if (l->next == (lineno_list_t *) NULL)
3734 {
3735 /* We want a count of zero, but it will be decremented
3736 before it is used. */
3737 count = 1;
3738 }
3739 else if (l->next->frag->fr_address + l->next->paddr
3740 > l->frag->fr_address + l->paddr)
3741 {
3742 count = ((l->next->frag->fr_address + l->next->paddr
3743 - (l->frag->fr_address + l->paddr))
3744 >> 2);
3745 }
3746 else
3747 {
3748 /* Don't change last, so we still get the right delta. */
3749 continue;
3750 }
3751
3752 if (l->file != file || l->proc != proc)
3753 {
3754 if (l->proc != proc && proc != (proc_t *) NULL)
3755 proc->pdr.lnHigh = last->lineno;
3756 if (l->file != file && file != (efdr_t *) NULL)
3757 {
3758 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3759 file->fdr.cline = totcount + count;
3760 if (linecntptr != (long *) NULL)
3761 *linecntptr += totcount + count;
3762 totcount = 0;
3763 }
3764
3765 if (l->file != file)
3766 {
3767 efdr_t *last_file = file;
3768
3769 file = l->file;
3770 if (last_file != (efdr_t *) NULL)
3771 file->fdr.ilineBase
3772 = last_file->fdr.ilineBase + last_file->fdr.cline;
3773 else
3774 file->fdr.ilineBase = 0;
3775 file->fdr.cbLineOffset = c;
3776 }
3777 if (l->proc != proc)
3778 {
3779 proc = l->proc;
3780 if (proc != (proc_t *) NULL)
3781 {
3782 proc->pdr.lnLow = l->lineno;
3783 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset;
3784 proc->pdr.iline = totcount;
3785 }
3786 }
3787
3788 last = (lineno_list_t *) NULL;
3789 }
3790
3791 totcount += count;
3792
3793 /* Get the offset to this line number. */
3794 if (last == (lineno_list_t *) NULL)
3795 delta = 0;
3796 else
3797 delta = l->lineno - last->lineno;
3798
3799 /* Put in the offset to this line number. */
3800 while (delta != 0)
3801 {
3802 int setcount;
3803
3804 /* 1 is added to each count read. */
3805 --count;
3806 /* We can only adjust the word count by up to 15 words at a
3807 time. */
3808 if (count <= 0x0f)
3809 {
3810 setcount = count;
3811 count = 0;
3812 }
3813 else
3814 {
3815 setcount = 0x0f;
3816 count -= 0x0f;
3817 }
3818 if (delta >= -7 && delta <= 7)
3819 {
3820 if (bufptr >= *bufend)
3821 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3822 *bufptr++ = setcount + (delta << 4);
3823 delta = 0;
3824 ++c;
3825 }
3826 else
3827 {
3828 int set;
3829
3830 if (*bufend - bufptr < 3)
3831 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3);
3832 *bufptr++ = setcount + (8 << 4);
3833 if (delta < -0x8000)
3834 {
3835 set = -0x8000;
3836 delta += 0x8000;
3837 }
3838 else if (delta > 0x7fff)
3839 {
3840 set = 0x7fff;
3841 delta -= 0x7fff;
3842 }
3843 else
3844 {
3845 set = delta;
3846 delta = 0;
3847 }
3848 *bufptr++ = set >> 8;
3849 *bufptr++ = set & 0xffff;
3850 c += 3;
3851 }
3852 }
3853
3854 /* Finish adjusting the count. */
3855 while (count > 0)
3856 {
3857 if (bufptr >= *bufend)
3858 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3859 /* 1 is added to each count read. */
3860 --count;
3861 if (count > 0x0f)
3862 {
3863 *bufptr++ = 0x0f;
3864 count -= 0x0f;
3865 }
3866 else
3867 {
3868 *bufptr++ = count;
3869 count = 0;
3870 }
3871 ++c;
3872 }
3873
3874 ++iline;
3875 last = l;
3876 }
3877
3878 if (proc != (proc_t *) NULL)
3879 proc->pdr.lnHigh = last->lineno;
3880 if (file != (efdr_t *) NULL)
3881 {
3882 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3883 file->fdr.cline = totcount;
3884 }
3885
3886 if (linecntptr != (long *) NULL)
3887 *linecntptr += totcount;
3888
3889 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr);
3890
3891 return c;
3892 }
3893
3894 /* Build and swap out the symbols. */
3895
3896 static unsigned long
3897 ecoff_build_symbols (const struct ecoff_debug_swap *backend,
3898 char **buf,
3899 char **bufend,
3900 unsigned long offset)
3901 {
3902 const bfd_size_type external_sym_size = backend->external_sym_size;
3903 void (* const swap_sym_out) (bfd *, const SYMR *, void *)
3904 = backend->swap_sym_out;
3905 char *sym_out;
3906 long isym;
3907 vlinks_t *file_link;
3908
3909 sym_out = *buf + offset;
3910
3911 isym = 0;
3912
3913 /* The symbols are stored by file. */
3914 for (file_link = file_desc.first;
3915 file_link != (vlinks_t *) NULL;
3916 file_link = file_link->next)
3917 {
3918 int ifilesym;
3919 int fil_cnt;
3920 efdr_t *fil_ptr;
3921 efdr_t *fil_end;
3922
3923 if (file_link->next == (vlinks_t *) NULL)
3924 fil_cnt = file_desc.objects_last_page;
3925 else
3926 fil_cnt = file_desc.objects_per_page;
3927 fil_ptr = file_link->datum->file;
3928 fil_end = fil_ptr + fil_cnt;
3929 for (; fil_ptr < fil_end; fil_ptr++)
3930 {
3931 vlinks_t *sym_link;
3932
3933 fil_ptr->fdr.isymBase = isym;
3934 ifilesym = isym;
3935 for (sym_link = fil_ptr->symbols.first;
3936 sym_link != (vlinks_t *) NULL;
3937 sym_link = sym_link->next)
3938 {
3939 int sym_cnt;
3940 localsym_t *sym_ptr;
3941 localsym_t *sym_end;
3942
3943 if (sym_link->next == (vlinks_t *) NULL)
3944 sym_cnt = fil_ptr->symbols.objects_last_page;
3945 else
3946 sym_cnt = fil_ptr->symbols.objects_per_page;
3947 sym_ptr = sym_link->datum->sym;
3948 sym_end = sym_ptr + sym_cnt;
3949 for (; sym_ptr < sym_end; sym_ptr++)
3950 {
3951 int local;
3952 symbolS *as_sym;
3953 forward_t *f;
3954
3955 know (sym_ptr->file_ptr == fil_ptr);
3956
3957 /* If there is no associated gas symbol, then this
3958 is a pure debugging symbol. We have already
3959 added the name (if any) to fil_ptr->strings.
3960 Otherwise we must decide whether this is an
3961 external or a local symbol (actually, it may be
3962 both if the local provides additional debugging
3963 information for the external). */
3964 local = 1;
3965 as_sym = sym_ptr->as_sym;
3966 if (as_sym != (symbolS *) NULL)
3967 {
3968 symint_t indx;
3969
3970 /* The value of a block start symbol is the
3971 offset from the start of the procedure. For
3972 other symbols we just use the gas value (but
3973 we must offset it by the vma of the section,
3974 just as BFD does, because BFD will not see
3975 this value). */
3976 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block
3977 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text)
3978 {
3979 symbolS *begin_sym;
3980
3981 know (sym_ptr->proc_ptr != (proc_t *) NULL);
3982 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
3983 if (S_GET_SEGMENT (as_sym)
3984 != S_GET_SEGMENT (begin_sym))
3985 as_warn (_(".begin/.bend in different segments"));
3986 sym_ptr->ecoff_sym.asym.value =
3987 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
3988 }
3989 else
3990 sym_ptr->ecoff_sym.asym.value =
3991 (S_GET_VALUE (as_sym)
3992 + bfd_get_section_vma (stdoutput,
3993 S_GET_SEGMENT (as_sym))
3994 + sym_ptr->addend);
3995
3996 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym);
3997
3998 /* Set st_Proc to st_StaticProc for local
3999 functions. */
4000 if (sym_ptr->ecoff_sym.asym.st == st_Proc
4001 && S_IS_DEFINED (as_sym)
4002 && ! S_IS_EXTERNAL (as_sym)
4003 && ! S_IS_WEAK (as_sym))
4004 sym_ptr->ecoff_sym.asym.st = st_StaticProc;
4005
4006 /* Get the type and storage class based on where
4007 the symbol actually wound up. Traditionally,
4008 N_LBRAC and N_RBRAC are *not* relocated. */
4009 indx = sym_ptr->ecoff_sym.asym.index;
4010 if (sym_ptr->ecoff_sym.asym.st == st_Nil
4011 && sym_ptr->ecoff_sym.asym.sc == sc_Nil
4012 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4013 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC)
4014 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC))))
4015 {
4016 segT seg;
4017 const char *segname;
4018 st_t st;
4019 sc_t sc;
4020
4021 seg = S_GET_SEGMENT (as_sym);
4022 segname = segment_name (seg);
4023
4024 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4025 && (S_IS_EXTERNAL (as_sym)
4026 || S_IS_WEAK (as_sym)
4027 || ! S_IS_DEFINED (as_sym)))
4028 {
4029 if ((symbol_get_bfdsym (as_sym)->flags
4030 & BSF_FUNCTION) != 0)
4031 st = st_Proc;
4032 else
4033 st = st_Global;
4034 }
4035 else if (seg == text_section)
4036 st = st_Label;
4037 else
4038 st = st_Static;
4039
4040 if (! S_IS_DEFINED (as_sym))
4041 {
4042 valueT s;
4043
4044 s = symbol_get_obj (as_sym)->ecoff_extern_size;
4045 if (s == 0
4046 || s > bfd_get_gp_size (stdoutput))
4047 sc = sc_Undefined;
4048 else
4049 {
4050 sc = sc_SUndefined;
4051 sym_ptr->ecoff_sym.asym.value = s;
4052 }
4053 #ifdef S_SET_SIZE
4054 S_SET_SIZE (as_sym, s);
4055 #endif
4056 }
4057 else if (S_IS_COMMON (as_sym))
4058 {
4059 if (S_GET_VALUE (as_sym) > 0
4060 && (S_GET_VALUE (as_sym)
4061 <= bfd_get_gp_size (stdoutput)))
4062 sc = sc_SCommon;
4063 else
4064 sc = sc_Common;
4065 }
4066 else if (seg == text_section)
4067 sc = sc_Text;
4068 else if (seg == data_section)
4069 sc = sc_Data;
4070 else if (strcmp (segname, ".rdata") == 0
4071 || strcmp (segname, ".rodata") == 0)
4072 sc = sc_RData;
4073 else if (strcmp (segname, ".sdata") == 0)
4074 sc = sc_SData;
4075 else if (seg == bss_section)
4076 sc = sc_Bss;
4077 else if (strcmp (segname, ".sbss") == 0)
4078 sc = sc_SBss;
4079 else if (seg == bfd_abs_section_ptr)
4080 sc = sc_Abs;
4081 else
4082 {
4083 /* This must be a user named section.
4084 This is not possible in ECOFF, but it
4085 is in ELF. */
4086 sc = sc_Data;
4087 }
4088
4089 sym_ptr->ecoff_sym.asym.st = (int) st;
4090 sym_ptr->ecoff_sym.asym.sc = (int) sc;
4091 }
4092
4093 /* This is just an external symbol if it is
4094 outside a procedure and it has a type.
4095 FIXME: g++ will generate symbols which have
4096 different names in the debugging information
4097 than the actual symbol. Should we handle
4098 them here? */
4099 if ((S_IS_EXTERNAL (as_sym)
4100 || S_IS_WEAK (as_sym)
4101 || ! S_IS_DEFINED (as_sym))
4102 && sym_ptr->proc_ptr == (proc_t *) NULL
4103 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil
4104 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym))
4105 local = 0;
4106
4107 /* This is just an external symbol if it is a
4108 common symbol. */
4109 if (S_IS_COMMON (as_sym))
4110 local = 0;
4111
4112 /* If an st_end symbol has an associated gas
4113 symbol, then it is a local label created for
4114 a .bend or .end directive. Stabs line
4115 numbers will have \001 in the names. */
4116 if (local
4117 && sym_ptr->ecoff_sym.asym.st != st_End
4118 && strchr (sym_ptr->name, '\001') == 0)
4119 sym_ptr->ecoff_sym.asym.iss =
4120 add_string (&fil_ptr->strings,
4121 fil_ptr->str_hash,
4122 sym_ptr->name,
4123 (shash_t **) NULL);
4124 }
4125
4126 /* We now know the index of this symbol; fill in
4127 locations that have been waiting for that
4128 information. */
4129 if (sym_ptr->begin_ptr != (localsym_t *) NULL)
4130 {
4131 localsym_t *begin_ptr;
4132 st_t begin_type;
4133
4134 know (local);
4135 begin_ptr = sym_ptr->begin_ptr;
4136 know (begin_ptr->sym_index != -1);
4137 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index;
4138 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4139 sym_ptr->ecoff_sym.asym.iss =
4140 begin_ptr->ecoff_sym.asym.iss;
4141
4142 begin_type = (st_t) begin_ptr->ecoff_sym.asym.st;
4143 if (begin_type == st_File
4144 || begin_type == st_Block)
4145 {
4146 begin_ptr->ecoff_sym.asym.index =
4147 isym - ifilesym + 1;
4148 (*swap_sym_out) (stdoutput,
4149 &begin_ptr->ecoff_sym.asym,
4150 (*buf
4151 + offset
4152 + (begin_ptr->sym_index
4153 * external_sym_size)));
4154 }
4155 else
4156 {
4157 know (begin_ptr->index_ptr != (aux_t *) NULL);
4158 begin_ptr->index_ptr->data.isym =
4159 isym - ifilesym + 1;
4160 }
4161
4162 /* The value of the symbol marking the end of a
4163 procedure is the size of the procedure. The
4164 value of the symbol marking the end of a
4165 block is the offset from the start of the
4166 procedure to the block. */
4167 if (begin_type == st_Proc
4168 || begin_type == st_StaticProc)
4169 {
4170 know (as_sym != (symbolS *) NULL);
4171 know (begin_ptr->as_sym != (symbolS *) NULL);
4172 if (S_GET_SEGMENT (as_sym)
4173 != S_GET_SEGMENT (begin_ptr->as_sym))
4174 as_warn (_(".begin/.bend in different segments"));
4175 sym_ptr->ecoff_sym.asym.value =
4176 (S_GET_VALUE (as_sym)
4177 - S_GET_VALUE (begin_ptr->as_sym));
4178
4179 /* If the size is odd, this is probably a
4180 mips16 function; force it to be even. */
4181 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0)
4182 ++sym_ptr->ecoff_sym.asym.value;
4183
4184 #ifdef S_SET_SIZE
4185 S_SET_SIZE (begin_ptr->as_sym,
4186 sym_ptr->ecoff_sym.asym.value);
4187 #endif
4188 }
4189 else if (begin_type == st_Block
4190 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4191 {
4192 symbolS *begin_sym;
4193
4194 know (as_sym != (symbolS *) NULL);
4195 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4196 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4197 if (S_GET_SEGMENT (as_sym)
4198 != S_GET_SEGMENT (begin_sym))
4199 as_warn (_(".begin/.bend in different segments"));
4200 sym_ptr->ecoff_sym.asym.value =
4201 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4202 }
4203 }
4204
4205 for (f = sym_ptr->forward_ref;
4206 f != (forward_t *) NULL;
4207 f = f->next)
4208 {
4209 know (local);
4210 f->ifd_ptr->data.isym = fil_ptr->file_index;
4211 f->index_ptr->data.rndx.index = isym - ifilesym;
4212 }
4213
4214 if (local)
4215 {
4216 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size)
4217 sym_out = ecoff_add_bytes (buf, bufend,
4218 sym_out,
4219 external_sym_size);
4220 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym,
4221 sym_out);
4222 sym_out += external_sym_size;
4223
4224 sym_ptr->sym_index = isym;
4225
4226 if (sym_ptr->proc_ptr != (proc_t *) NULL
4227 && sym_ptr->proc_ptr->sym == sym_ptr)
4228 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym;
4229
4230 ++isym;
4231 }
4232
4233 /* Record the local symbol index and file number in
4234 case this is an external symbol. Note that this
4235 destroys the asym.index field. */
4236 if (as_sym != (symbolS *) NULL
4237 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr)
4238 {
4239 if ((sym_ptr->ecoff_sym.asym.st == st_Proc
4240 || sym_ptr->ecoff_sym.asym.st == st_StaticProc)
4241 && local)
4242 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1;
4243 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index;
4244
4245 /* Don't try to merge an FDR which has an
4246 external symbol attached to it. */
4247 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym))
4248 fil_ptr->fdr.fMerge = 0;
4249 }
4250 }
4251 }
4252 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase;
4253 }
4254 }
4255
4256 return offset + isym * external_sym_size;
4257 }
4258
4259 /* Swap out the procedure information. */
4260
4261 static unsigned long
4262 ecoff_build_procs (const struct ecoff_debug_swap *backend,
4263 char **buf,
4264 char **bufend,
4265 unsigned long offset)
4266 {
4267 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4268 void (* const swap_pdr_out) (bfd *, const PDR *, void *)
4269 = backend->swap_pdr_out;
4270 char *pdr_out;
4271 long iproc;
4272 vlinks_t *file_link;
4273
4274 pdr_out = *buf + offset;
4275
4276 iproc = 0;
4277
4278 /* The procedures are stored by file. */
4279 for (file_link = file_desc.first;
4280 file_link != (vlinks_t *) NULL;
4281 file_link = file_link->next)
4282 {
4283 int fil_cnt;
4284 efdr_t *fil_ptr;
4285 efdr_t *fil_end;
4286
4287 if (file_link->next == (vlinks_t *) NULL)
4288 fil_cnt = file_desc.objects_last_page;
4289 else
4290 fil_cnt = file_desc.objects_per_page;
4291 fil_ptr = file_link->datum->file;
4292 fil_end = fil_ptr + fil_cnt;
4293 for (; fil_ptr < fil_end; fil_ptr++)
4294 {
4295 vlinks_t *proc_link;
4296 int first;
4297
4298 fil_ptr->fdr.ipdFirst = iproc;
4299 first = 1;
4300 for (proc_link = fil_ptr->procs.first;
4301 proc_link != (vlinks_t *) NULL;
4302 proc_link = proc_link->next)
4303 {
4304 int prc_cnt;
4305 proc_t *proc_ptr;
4306 proc_t *proc_end;
4307
4308 if (proc_link->next == (vlinks_t *) NULL)
4309 prc_cnt = fil_ptr->procs.objects_last_page;
4310 else
4311 prc_cnt = fil_ptr->procs.objects_per_page;
4312 proc_ptr = proc_link->datum->proc;
4313 proc_end = proc_ptr + prc_cnt;
4314 for (; proc_ptr < proc_end; proc_ptr++)
4315 {
4316 symbolS *adr_sym;
4317 unsigned long adr;
4318
4319 adr_sym = proc_ptr->sym->as_sym;
4320 adr = (S_GET_VALUE (adr_sym)
4321 + bfd_get_section_vma (stdoutput,
4322 S_GET_SEGMENT (adr_sym)));
4323 if (first)
4324 {
4325 /* This code used to force the adr of the very
4326 first fdr to be 0. However, the native tools
4327 don't do that, and I can't remember why it
4328 used to work that way, so I took it out. */
4329 fil_ptr->fdr.adr = adr;
4330 first = 0;
4331 }
4332 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr;
4333 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size)
4334 pdr_out = ecoff_add_bytes (buf, bufend,
4335 pdr_out,
4336 external_pdr_size);
4337 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out);
4338 pdr_out += external_pdr_size;
4339 ++iproc;
4340 }
4341 }
4342 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst;
4343 }
4344 }
4345
4346 return offset + iproc * external_pdr_size;
4347 }
4348
4349 /* Swap out the aux information. */
4350
4351 static unsigned long
4352 ecoff_build_aux (const struct ecoff_debug_swap *backend,
4353 char **buf,
4354 char **bufend,
4355 unsigned long offset)
4356 {
4357 int bigendian;
4358 union aux_ext *aux_out;
4359 long iaux;
4360 vlinks_t *file_link;
4361
4362 bigendian = bfd_big_endian (stdoutput);
4363
4364 aux_out = (union aux_ext *) (*buf + offset);
4365
4366 iaux = 0;
4367
4368 /* The aux entries are stored by file. */
4369 for (file_link = file_desc.first;
4370 file_link != (vlinks_t *) NULL;
4371 file_link = file_link->next)
4372 {
4373 int fil_cnt;
4374 efdr_t *fil_ptr;
4375 efdr_t *fil_end;
4376
4377 if (file_link->next == (vlinks_t *) NULL)
4378 fil_cnt = file_desc.objects_last_page;
4379 else
4380 fil_cnt = file_desc.objects_per_page;
4381 fil_ptr = file_link->datum->file;
4382 fil_end = fil_ptr + fil_cnt;
4383 for (; fil_ptr < fil_end; fil_ptr++)
4384 {
4385 vlinks_t *aux_link;
4386
4387 fil_ptr->fdr.fBigendian = bigendian;
4388 fil_ptr->fdr.iauxBase = iaux;
4389 for (aux_link = fil_ptr->aux_syms.first;
4390 aux_link != (vlinks_t *) NULL;
4391 aux_link = aux_link->next)
4392 {
4393 int aux_cnt;
4394 aux_t *aux_ptr;
4395 aux_t *aux_end;
4396
4397 if (aux_link->next == (vlinks_t *) NULL)
4398 aux_cnt = fil_ptr->aux_syms.objects_last_page;
4399 else
4400 aux_cnt = fil_ptr->aux_syms.objects_per_page;
4401 aux_ptr = aux_link->datum->aux;
4402 aux_end = aux_ptr + aux_cnt;
4403 for (; aux_ptr < aux_end; aux_ptr++)
4404 {
4405 if ((unsigned long) (*bufend - (char *) aux_out)
4406 < sizeof (union aux_ext))
4407 aux_out = ((union aux_ext *)
4408 ecoff_add_bytes (buf, bufend,
4409 (char *) aux_out,
4410 sizeof (union aux_ext)));
4411 switch (aux_ptr->type)
4412 {
4413 case aux_tir:
4414 (*backend->swap_tir_out) (bigendian,
4415 &aux_ptr->data.ti,
4416 &aux_out->a_ti);
4417 break;
4418 case aux_rndx:
4419 (*backend->swap_rndx_out) (bigendian,
4420 &aux_ptr->data.rndx,
4421 &aux_out->a_rndx);
4422 break;
4423 case aux_dnLow:
4424 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow,
4425 aux_out);
4426 break;
4427 case aux_dnHigh:
4428 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh,
4429 aux_out);
4430 break;
4431 case aux_isym:
4432 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym,
4433 aux_out);
4434 break;
4435 case aux_iss:
4436 AUX_PUT_ISS (bigendian, aux_ptr->data.iss,
4437 aux_out);
4438 break;
4439 case aux_width:
4440 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width,
4441 aux_out);
4442 break;
4443 case aux_count:
4444 AUX_PUT_COUNT (bigendian, aux_ptr->data.count,
4445 aux_out);
4446 break;
4447 }
4448
4449 ++aux_out;
4450 ++iaux;
4451 }
4452 }
4453 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase;
4454 }
4455 }
4456
4457 return ecoff_padding_adjust (backend, buf, bufend,
4458 offset + iaux * sizeof (union aux_ext),
4459 (char **) NULL);
4460 }
4461
4462 /* Copy out the strings from a varray_t. This returns the number of
4463 bytes copied, rather than the new offset. */
4464
4465 static unsigned long
4466 ecoff_build_strings (char **buf,
4467 char **bufend,
4468 unsigned long offset,
4469 varray_t *vp)
4470 {
4471 unsigned long istr;
4472 char *str_out;
4473 vlinks_t *str_link;
4474
4475 str_out = *buf + offset;
4476
4477 istr = 0;
4478
4479 for (str_link = vp->first;
4480 str_link != (vlinks_t *) NULL;
4481 str_link = str_link->next)
4482 {
4483 unsigned long str_cnt;
4484
4485 if (str_link->next == (vlinks_t *) NULL)
4486 str_cnt = vp->objects_last_page;
4487 else
4488 str_cnt = vp->objects_per_page;
4489
4490 if ((unsigned long)(*bufend - str_out) < str_cnt)
4491 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt);
4492
4493 memcpy (str_out, str_link->datum->byte, str_cnt);
4494 str_out += str_cnt;
4495 istr += str_cnt;
4496 }
4497
4498 return istr;
4499 }
4500
4501 /* Dump out the local strings. */
4502
4503 static unsigned long
4504 ecoff_build_ss (const struct ecoff_debug_swap *backend,
4505 char **buf,
4506 char **bufend,
4507 unsigned long offset)
4508 {
4509 long iss;
4510 vlinks_t *file_link;
4511
4512 iss = 0;
4513
4514 for (file_link = file_desc.first;
4515 file_link != (vlinks_t *) NULL;
4516 file_link = file_link->next)
4517 {
4518 int fil_cnt;
4519 efdr_t *fil_ptr;
4520 efdr_t *fil_end;
4521
4522 if (file_link->next == (vlinks_t *) NULL)
4523 fil_cnt = file_desc.objects_last_page;
4524 else
4525 fil_cnt = file_desc.objects_per_page;
4526 fil_ptr = file_link->datum->file;
4527 fil_end = fil_ptr + fil_cnt;
4528 for (; fil_ptr < fil_end; fil_ptr++)
4529 {
4530 long ss_cnt;
4531
4532 fil_ptr->fdr.issBase = iss;
4533 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss,
4534 &fil_ptr->strings);
4535 fil_ptr->fdr.cbSs = ss_cnt;
4536 iss += ss_cnt;
4537 }
4538 }
4539
4540 return ecoff_padding_adjust (backend, buf, bufend, offset + iss,
4541 (char **) NULL);
4542 }
4543
4544 /* Swap out the file descriptors. */
4545
4546 static unsigned long
4547 ecoff_build_fdr (const struct ecoff_debug_swap *backend,
4548 char **buf,
4549 char **bufend,
4550 unsigned long offset)
4551 {
4552 const bfd_size_type external_fdr_size = backend->external_fdr_size;
4553 void (* const swap_fdr_out) (bfd *, const FDR *, void *)
4554 = backend->swap_fdr_out;
4555 long ifile;
4556 char *fdr_out;
4557 vlinks_t *file_link;
4558
4559 ifile = 0;
4560
4561 fdr_out = *buf + offset;
4562
4563 for (file_link = file_desc.first;
4564 file_link != (vlinks_t *) NULL;
4565 file_link = file_link->next)
4566 {
4567 int fil_cnt;
4568 efdr_t *fil_ptr;
4569 efdr_t *fil_end;
4570
4571 if (file_link->next == (vlinks_t *) NULL)
4572 fil_cnt = file_desc.objects_last_page;
4573 else
4574 fil_cnt = file_desc.objects_per_page;
4575 fil_ptr = file_link->datum->file;
4576 fil_end = fil_ptr + fil_cnt;
4577 for (; fil_ptr < fil_end; fil_ptr++)
4578 {
4579 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size)
4580 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out,
4581 external_fdr_size);
4582 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out);
4583 fdr_out += external_fdr_size;
4584 ++ifile;
4585 }
4586 }
4587
4588 return offset + ifile * external_fdr_size;
4589 }
4590
4591 /* Set up the external symbols. These are supposed to be handled by
4592 the backend. This routine just gets the right information and
4593 calls a backend function to deal with it. */
4594
4595 static void
4596 ecoff_setup_ext (void)
4597 {
4598 register symbolS *sym;
4599
4600 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4601 {
4602 if (symbol_get_obj (sym)->ecoff_symbol == NULL)
4603 continue;
4604
4605 /* If this is a local symbol, then force the fields to zero. */
4606 if (! S_IS_EXTERNAL (sym)
4607 && ! S_IS_WEAK (sym)
4608 && S_IS_DEFINED (sym))
4609 {
4610 struct localsym *lsym;
4611
4612 lsym = symbol_get_obj (sym)->ecoff_symbol;
4613 lsym->ecoff_sym.asym.value = 0;
4614 lsym->ecoff_sym.asym.st = (int) st_Nil;
4615 lsym->ecoff_sym.asym.sc = (int) sc_Nil;
4616 lsym->ecoff_sym.asym.index = indexNil;
4617 }
4618
4619 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym);
4620 }
4621 }
4622
4623 /* Build the ECOFF debugging information. */
4624
4625 unsigned long
4626 ecoff_build_debug (HDRR *hdr,
4627 char **bufp,
4628 const struct ecoff_debug_swap *backend)
4629 {
4630 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4631 tag_t *ptag;
4632 tag_t *ptag_next;
4633 efdr_t *fil_ptr;
4634 int end_warning;
4635 efdr_t *hold_file_ptr;
4636 proc_t *hold_proc_ptr;
4637 symbolS *sym;
4638 char *buf;
4639 char *bufend;
4640 unsigned long offset;
4641
4642 /* Make sure we have a file. */
4643 if (first_file == (efdr_t *) NULL)
4644 add_file ((const char *) NULL, 0, 1);
4645
4646 /* Handle any top level tags. */
4647 for (ptag = top_tag_head->first_tag;
4648 ptag != (tag_t *) NULL;
4649 ptag = ptag_next)
4650 {
4651 if (ptag->forward_ref != (forward_t *) NULL)
4652 add_unknown_tag (ptag);
4653
4654 ptag_next = ptag->same_block;
4655 ptag->hash_ptr->tag_ptr = ptag->same_name;
4656 free_tag (ptag);
4657 }
4658
4659 free_thead (top_tag_head);
4660
4661 /* Look through the symbols. Add debugging information for each
4662 symbol that has not already received it. */
4663 hold_file_ptr = cur_file_ptr;
4664 hold_proc_ptr = cur_proc_ptr;
4665 cur_proc_ptr = (proc_t *) NULL;
4666 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4667 {
4668 if (symbol_get_obj (sym)->ecoff_symbol != NULL
4669 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL
4670 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0)
4671 continue;
4672
4673 cur_file_ptr = symbol_get_obj (sym)->ecoff_file;
4674 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym,
4675 (bfd_vma) 0, S_GET_VALUE (sym), indexNil);
4676 }
4677 cur_proc_ptr = hold_proc_ptr;
4678 cur_file_ptr = hold_file_ptr;
4679
4680 /* Output an ending symbol for all the files. We have to do this
4681 here for the last file, so we may as well do it for all of the
4682 files. */
4683 end_warning = 0;
4684 for (fil_ptr = first_file;
4685 fil_ptr != (efdr_t *) NULL;
4686 fil_ptr = fil_ptr->next_file)
4687 {
4688 cur_file_ptr = fil_ptr;
4689 while (cur_file_ptr->cur_scope != (scope_t *) NULL
4690 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL)
4691 {
4692 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev;
4693 if (! end_warning && ! cur_file_ptr->fake)
4694 {
4695 as_warn (_("missing .end or .bend at end of file"));
4696 end_warning = 1;
4697 }
4698 }
4699 if (cur_file_ptr->cur_scope != (scope_t *) NULL)
4700 (void) add_ecoff_symbol ((const char *) NULL,
4701 st_End, sc_Text,
4702 (symbolS *) NULL,
4703 (bfd_vma) 0,
4704 (symint_t) 0,
4705 (symint_t) 0);
4706 }
4707
4708 /* Build the symbolic information. */
4709 offset = 0;
4710 buf = (char *) xmalloc (PAGE_SIZE);
4711 bufend = buf + PAGE_SIZE;
4712
4713 /* Build the line number information. */
4714 hdr->cbLineOffset = offset;
4715 offset = ecoff_build_lineno (backend, &buf, &bufend, offset,
4716 &hdr->ilineMax);
4717 hdr->cbLine = offset - hdr->cbLineOffset;
4718
4719 /* We don't use dense numbers at all. */
4720 hdr->idnMax = 0;
4721 hdr->cbDnOffset = 0;
4722
4723 /* We can't build the PDR table until we have built the symbols,
4724 because a PDR contains a symbol index. However, we set aside
4725 space at this point. */
4726 hdr->ipdMax = proc_cnt;
4727 hdr->cbPdOffset = offset;
4728 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size)
4729 (void) ecoff_add_bytes (&buf, &bufend, buf + offset,
4730 proc_cnt * external_pdr_size);
4731 offset += proc_cnt * external_pdr_size;
4732
4733 /* Build the local symbols. */
4734 hdr->cbSymOffset = offset;
4735 offset = ecoff_build_symbols (backend, &buf, &bufend, offset);
4736 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size;
4737
4738 /* Building the symbols initializes the symbol index in the PDR's.
4739 Now we can swap out the PDR's. */
4740 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset);
4741
4742 /* We don't use optimization symbols. */
4743 hdr->ioptMax = 0;
4744 hdr->cbOptOffset = 0;
4745
4746 /* Swap out the auxiliary type information. */
4747 hdr->cbAuxOffset = offset;
4748 offset = ecoff_build_aux (backend, &buf, &bufend, offset);
4749 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext);
4750
4751 /* Copy out the local strings. */
4752 hdr->cbSsOffset = offset;
4753 offset = ecoff_build_ss (backend, &buf, &bufend, offset);
4754 hdr->issMax = offset - hdr->cbSsOffset;
4755
4756 /* We don't use relative file descriptors. */
4757 hdr->crfd = 0;
4758 hdr->cbRfdOffset = 0;
4759
4760 /* Swap out the file descriptors. */
4761 hdr->cbFdOffset = offset;
4762 offset = ecoff_build_fdr (backend, &buf, &bufend, offset);
4763 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size;
4764
4765 /* Set up the external symbols, which are handled by the BFD back
4766 end. */
4767 hdr->issExtMax = 0;
4768 hdr->cbSsExtOffset = 0;
4769 hdr->iextMax = 0;
4770 hdr->cbExtOffset = 0;
4771 ecoff_setup_ext ();
4772
4773 know ((offset & (backend->debug_align - 1)) == 0);
4774
4775 /* FIXME: This value should be determined from the .verstamp directive,
4776 with reasonable defaults in config files. */
4777 #ifdef TC_ALPHA
4778 hdr->vstamp = 0x030b;
4779 #else
4780 hdr->vstamp = 0x020b;
4781 #endif
4782
4783 *bufp = buf;
4784 return offset;
4785 }
4786 \f
4787 /* Allocate a cluster of pages. */
4788
4789 #ifndef MALLOC_CHECK
4790
4791 static page_type *
4792 allocate_cluster (unsigned long npages)
4793 {
4794 register page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE);
4795
4796 #ifdef ECOFF_DEBUG
4797 if (debug > 3)
4798 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value);
4799 #endif
4800
4801 memset (value, 0, npages * PAGE_USIZE);
4802
4803 return value;
4804 }
4805
4806 static page_type *cluster_ptr = NULL;
4807 static unsigned long pages_left = 0;
4808
4809 #endif /* MALLOC_CHECK */
4810
4811 /* Allocate one page (which is initialized to 0). */
4812
4813 static page_type *
4814 allocate_page (void)
4815 {
4816 #ifndef MALLOC_CHECK
4817
4818 if (pages_left == 0)
4819 {
4820 pages_left = MAX_CLUSTER_PAGES;
4821 cluster_ptr = allocate_cluster (pages_left);
4822 }
4823
4824 pages_left--;
4825 return cluster_ptr++;
4826
4827 #else /* MALLOC_CHECK */
4828
4829 page_type *ptr;
4830
4831 ptr = xmalloc (PAGE_USIZE);
4832 memset (ptr, 0, PAGE_USIZE);
4833 return ptr;
4834
4835 #endif /* MALLOC_CHECK */
4836 }
4837 \f
4838 /* Allocate scoping information. */
4839
4840 static scope_t *
4841 allocate_scope (void)
4842 {
4843 register scope_t *ptr;
4844 static scope_t initial_scope;
4845
4846 #ifndef MALLOC_CHECK
4847
4848 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4849 if (ptr != (scope_t *) NULL)
4850 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free;
4851 else
4852 {
4853 register int unallocated = alloc_counts[(int) alloc_type_scope].unallocated;
4854 register page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page;
4855
4856 if (unallocated == 0)
4857 {
4858 unallocated = PAGE_SIZE / sizeof (scope_t);
4859 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page ();
4860 alloc_counts[(int) alloc_type_scope].total_pages++;
4861 }
4862
4863 ptr = &cur_page->scope[--unallocated];
4864 alloc_counts[(int) alloc_type_scope].unallocated = unallocated;
4865 }
4866
4867 #else
4868
4869 ptr = (scope_t *) xmalloc (sizeof (scope_t));
4870
4871 #endif
4872
4873 alloc_counts[(int) alloc_type_scope].total_alloc++;
4874 *ptr = initial_scope;
4875 return ptr;
4876 }
4877
4878 /* Free scoping information. */
4879
4880 static void
4881 free_scope (scope_t *ptr)
4882 {
4883 alloc_counts[(int) alloc_type_scope].total_free++;
4884
4885 #ifndef MALLOC_CHECK
4886 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4887 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr;
4888 #else
4889 free ((void *) ptr);
4890 #endif
4891 }
4892 \f
4893 /* Allocate links for pages in a virtual array. */
4894
4895 static vlinks_t *
4896 allocate_vlinks (void)
4897 {
4898 register vlinks_t *ptr;
4899 static vlinks_t initial_vlinks;
4900
4901 #ifndef MALLOC_CHECK
4902
4903 register int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated;
4904 register page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page;
4905
4906 if (unallocated == 0)
4907 {
4908 unallocated = PAGE_SIZE / sizeof (vlinks_t);
4909 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page ();
4910 alloc_counts[(int) alloc_type_vlinks].total_pages++;
4911 }
4912
4913 ptr = &cur_page->vlinks[--unallocated];
4914 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated;
4915
4916 #else
4917
4918 ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t));
4919
4920 #endif
4921
4922 alloc_counts[(int) alloc_type_vlinks].total_alloc++;
4923 *ptr = initial_vlinks;
4924 return ptr;
4925 }
4926 \f
4927 /* Allocate string hash buckets. */
4928
4929 static shash_t *
4930 allocate_shash (void)
4931 {
4932 register shash_t *ptr;
4933 static shash_t initial_shash;
4934
4935 #ifndef MALLOC_CHECK
4936
4937 register int unallocated = alloc_counts[(int) alloc_type_shash].unallocated;
4938 register page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page;
4939
4940 if (unallocated == 0)
4941 {
4942 unallocated = PAGE_SIZE / sizeof (shash_t);
4943 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page ();
4944 alloc_counts[(int) alloc_type_shash].total_pages++;
4945 }
4946
4947 ptr = &cur_page->shash[--unallocated];
4948 alloc_counts[(int) alloc_type_shash].unallocated = unallocated;
4949
4950 #else
4951
4952 ptr = (shash_t *) xmalloc (sizeof (shash_t));
4953
4954 #endif
4955
4956 alloc_counts[(int) alloc_type_shash].total_alloc++;
4957 *ptr = initial_shash;
4958 return ptr;
4959 }
4960 \f
4961 /* Allocate type hash buckets. */
4962
4963 static thash_t *
4964 allocate_thash (void)
4965 {
4966 register thash_t *ptr;
4967 static thash_t initial_thash;
4968
4969 #ifndef MALLOC_CHECK
4970
4971 register int unallocated = alloc_counts[(int) alloc_type_thash].unallocated;
4972 register page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page;
4973
4974 if (unallocated == 0)
4975 {
4976 unallocated = PAGE_SIZE / sizeof (thash_t);
4977 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page ();
4978 alloc_counts[(int) alloc_type_thash].total_pages++;
4979 }
4980
4981 ptr = &cur_page->thash[--unallocated];
4982 alloc_counts[(int) alloc_type_thash].unallocated = unallocated;
4983
4984 #else
4985
4986 ptr = (thash_t *) xmalloc (sizeof (thash_t));
4987
4988 #endif
4989
4990 alloc_counts[(int) alloc_type_thash].total_alloc++;
4991 *ptr = initial_thash;
4992 return ptr;
4993 }
4994 \f
4995 /* Allocate structure, union, or enum tag information. */
4996
4997 static tag_t *
4998 allocate_tag (void)
4999 {
5000 register tag_t *ptr;
5001 static tag_t initial_tag;
5002
5003 #ifndef MALLOC_CHECK
5004
5005 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
5006 if (ptr != (tag_t *) NULL)
5007 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free;
5008 else
5009 {
5010 register int unallocated = alloc_counts[(int) alloc_type_tag].unallocated;
5011 register page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page;
5012
5013 if (unallocated == 0)
5014 {
5015 unallocated = PAGE_SIZE / sizeof (tag_t);
5016 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page ();
5017 alloc_counts[(int) alloc_type_tag].total_pages++;
5018 }
5019
5020 ptr = &cur_page->tag[--unallocated];
5021 alloc_counts[(int) alloc_type_tag].unallocated = unallocated;
5022 }
5023
5024 #else
5025
5026 ptr = (tag_t *) xmalloc (sizeof (tag_t));
5027
5028 #endif
5029
5030 alloc_counts[(int) alloc_type_tag].total_alloc++;
5031 *ptr = initial_tag;
5032 return ptr;
5033 }
5034
5035 /* Free scoping information. */
5036
5037 static void
5038 free_tag (tag_t *ptr)
5039 {
5040 alloc_counts[(int) alloc_type_tag].total_free++;
5041
5042 #ifndef MALLOC_CHECK
5043 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
5044 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr;
5045 #else
5046 free ((PTR_T) ptr);
5047 #endif
5048 }
5049 \f
5050 /* Allocate forward reference to a yet unknown tag. */
5051
5052 static forward_t *
5053 allocate_forward (void)
5054 {
5055 register forward_t *ptr;
5056 static forward_t initial_forward;
5057
5058 #ifndef MALLOC_CHECK
5059
5060 register int unallocated = alloc_counts[(int) alloc_type_forward].unallocated;
5061 register page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page;
5062
5063 if (unallocated == 0)
5064 {
5065 unallocated = PAGE_SIZE / sizeof (forward_t);
5066 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page ();
5067 alloc_counts[(int) alloc_type_forward].total_pages++;
5068 }
5069
5070 ptr = &cur_page->forward[--unallocated];
5071 alloc_counts[(int) alloc_type_forward].unallocated = unallocated;
5072
5073 #else
5074
5075 ptr = (forward_t *) xmalloc (sizeof (forward_t));
5076
5077 #endif
5078
5079 alloc_counts[(int) alloc_type_forward].total_alloc++;
5080 *ptr = initial_forward;
5081 return ptr;
5082 }
5083 \f
5084 /* Allocate head of type hash list. */
5085
5086 static thead_t *
5087 allocate_thead (void)
5088 {
5089 register thead_t *ptr;
5090 static thead_t initial_thead;
5091
5092 #ifndef MALLOC_CHECK
5093
5094 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5095 if (ptr != (thead_t *) NULL)
5096 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free;
5097 else
5098 {
5099 register int unallocated = alloc_counts[(int) alloc_type_thead].unallocated;
5100 register page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page;
5101
5102 if (unallocated == 0)
5103 {
5104 unallocated = PAGE_SIZE / sizeof (thead_t);
5105 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page ();
5106 alloc_counts[(int) alloc_type_thead].total_pages++;
5107 }
5108
5109 ptr = &cur_page->thead[--unallocated];
5110 alloc_counts[(int) alloc_type_thead].unallocated = unallocated;
5111 }
5112
5113 #else
5114
5115 ptr = (thead_t *) xmalloc (sizeof (thead_t));
5116
5117 #endif
5118
5119 alloc_counts[(int) alloc_type_thead].total_alloc++;
5120 *ptr = initial_thead;
5121 return ptr;
5122 }
5123
5124 /* Free scoping information. */
5125
5126 static void
5127 free_thead (thead_t *ptr)
5128 {
5129 alloc_counts[(int) alloc_type_thead].total_free++;
5130
5131 #ifndef MALLOC_CHECK
5132 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5133 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr;
5134 #else
5135 free ((PTR_T) ptr);
5136 #endif
5137 }
5138 \f
5139 static lineno_list_t *
5140 allocate_lineno_list (void)
5141 {
5142 register lineno_list_t *ptr;
5143 static lineno_list_t initial_lineno_list;
5144
5145 #ifndef MALLOC_CHECK
5146
5147 register int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated;
5148 register page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page;
5149
5150 if (unallocated == 0)
5151 {
5152 unallocated = PAGE_SIZE / sizeof (lineno_list_t);
5153 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page ();
5154 alloc_counts[(int) alloc_type_lineno].total_pages++;
5155 }
5156
5157 ptr = &cur_page->lineno[--unallocated];
5158 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated;
5159
5160 #else
5161
5162 ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t));
5163
5164 #endif
5165
5166 alloc_counts[(int) alloc_type_lineno].total_alloc++;
5167 *ptr = initial_lineno_list;
5168 return ptr;
5169 }
5170
5171 void
5172 ecoff_set_gp_prolog_size (int sz)
5173 {
5174 if (cur_proc_ptr == 0)
5175 return;
5176
5177 cur_proc_ptr->pdr.gp_prologue = sz;
5178 if (cur_proc_ptr->pdr.gp_prologue != sz)
5179 {
5180 as_warn (_("GP prologue size exceeds field size, using 0 instead"));
5181 cur_proc_ptr->pdr.gp_prologue = 0;
5182 }
5183
5184 cur_proc_ptr->pdr.gp_used = 1;
5185 }
5186
5187 int
5188 ecoff_no_current_file (void)
5189 {
5190 return cur_file_ptr == (efdr_t *) NULL;
5191 }
5192
5193 void
5194 ecoff_generate_asm_lineno (void)
5195 {
5196 unsigned int lineno;
5197 char *filename;
5198 lineno_list_t *list;
5199
5200 as_where (&filename, &lineno);
5201
5202 if (current_stabs_filename == (char *) NULL
5203 || filename_cmp (current_stabs_filename, filename))
5204 add_file (filename, 0, 1);
5205
5206 list = allocate_lineno_list ();
5207
5208 list->next = (lineno_list_t *) NULL;
5209 list->file = cur_file_ptr;
5210 list->proc = cur_proc_ptr;
5211 list->frag = frag_now;
5212 list->paddr = frag_now_fix ();
5213 list->lineno = lineno;
5214
5215 /* We don't want to merge files which have line numbers. */
5216 cur_file_ptr->fdr.fMerge = 0;
5217
5218 /* A .loc directive will sometimes appear before a .ent directive,
5219 which means that cur_proc_ptr will be NULL here. Arrange to
5220 patch this up. */
5221 if (cur_proc_ptr == (proc_t *) NULL)
5222 {
5223 lineno_list_t **pl;
5224
5225 pl = &noproc_lineno;
5226 while (*pl != (lineno_list_t *) NULL)
5227 pl = &(*pl)->next;
5228 *pl = list;
5229 }
5230 else
5231 {
5232 last_lineno = list;
5233 *last_lineno_ptr = list;
5234 last_lineno_ptr = &list->next;
5235 }
5236 }
5237
5238 #else
5239
5240 void
5241 ecoff_generate_asm_lineno (void)
5242 {
5243 }
5244
5245 #endif /* ECOFF_DEBUGGING */
GDB Binutils - Deliverables
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