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2001-05-25 H.J. Lu <hjl@gnu.org>
[binutils.git] / gas / ecoff.c
blob57ddddc93bfe00ec20cf9e0d7ed09db87eda9d33
1 /* ECOFF debugging support.
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
3 Free Software Foundation, Inc.
4 Contributed by Cygnus Support.
5 This file was put together by Ian Lance Taylor <ian@cygnus.com>. A
6 good deal of it comes directly from mips-tfile.c, by Michael
7 Meissner <meissner@osf.org>.
8
9 This file is part of GAS.
10
11 GAS is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2, or (at your option)
14 any later version.
15
16 GAS is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with GAS; see the file COPYING. If not, write to the Free
23 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
24 02111-1307, USA. */
25
26 #include "as.h"
27
28 /* This file is compiled conditionally for those targets which use
29 ECOFF debugging information (e.g., MIPS ECOFF, MIPS ELF, Alpha
30 ECOFF). */
31
32 #include "ecoff.h"
33
34 #ifdef ECOFF_DEBUGGING
35
36 #include "coff/internal.h"
37 #include "coff/symconst.h"
38 #include "aout/stab_gnu.h"
39
40 #include <ctype.h>
41
42 /* Why isn't this in coff/sym.h? */
43 #define ST_RFDESCAPE 0xfff
44
45 /* This file constructs the information used by the ECOFF debugging
46 format. It just builds a large block of data.
47
48 We support both ECOFF style debugging and stabs debugging (the
49 stabs symbols are encapsulated in ECOFF symbols). This should let
50 us handle anything the compiler might throw at us. */
51
52 /* Here is a brief description of the MIPS ECOFF symbol table, by
53 Michael Meissner. The MIPS symbol table has the following pieces:
54
55 Symbolic Header
56 |
57 +-- Auxiliary Symbols
58 |
59 +-- Dense number table
60 |
61 +-- Optimizer Symbols
62 |
63 +-- External Strings
64 |
65 +-- External Symbols
66 |
67 +-- Relative file descriptors
68 |
69 +-- File table
70 |
71 +-- Procedure table
72 |
73 +-- Line number table
74 |
75 +-- Local Strings
76 |
77 +-- Local Symbols
78
79 The symbolic header points to each of the other tables, and also
80 contains the number of entries. It also contains a magic number
81 and MIPS compiler version number, such as 2.0.
82
83 The auxiliary table is a series of 32 bit integers, that are
84 referenced as needed from the local symbol table. Unlike standard
85 COFF, the aux. information does not follow the symbol that uses
86 it, but rather is a separate table. In theory, this would allow
87 the MIPS compilers to collapse duplicate aux. entries, but I've not
88 noticed this happening with the 1.31 compiler suite. The different
89 types of aux. entries are:
90
91 1) dnLow: Low bound on array dimension.
92
93 2) dnHigh: High bound on array dimension.
94
95 3) isym: Index to the local symbol which is the start of the
96 function for the end of function first aux. entry.
97
98 4) width: Width of structures and bitfields.
99
100 5) count: Count of ranges for variant part.
101
102 6) rndx: A relative index into the symbol table. The relative
103 index field has two parts: rfd which is a pointer into the
104 relative file index table or ST_RFDESCAPE which says the next
105 aux. entry is the file number, and index: which is the pointer
106 into the local symbol within a given file table. This is for
107 things like references to types defined in another file.
108
109 7) Type information: This is like the COFF type bits, except it
110 is 32 bits instead of 16; they still have room to add new
111 basic types; and they can handle more than 6 levels of array,
112 pointer, function, etc. Each type information field contains
113 the following structure members:
114
115 a) fBitfield: a bit that says this is a bitfield, and the
116 size in bits follows as the next aux. entry.
117
118 b) continued: a bit that says the next aux. entry is a
119 continuation of the current type information (in case
120 there are more than 6 levels of array/ptr/function).
121
122 c) bt: an integer containing the base type before adding
123 array, pointer, function, etc. qualifiers. The
124 current base types that I have documentation for are:
125
126 btNil -- undefined
127 btAdr -- address - integer same size as ptr
128 btChar -- character
129 btUChar -- unsigned character
130 btShort -- short
131 btUShort -- unsigned short
132 btInt -- int
133 btUInt -- unsigned int
134 btLong -- long
135 btULong -- unsigned long
136 btFloat -- float (real)
137 btDouble -- Double (real)
138 btStruct -- Structure (Record)
139 btUnion -- Union (variant)
140 btEnum -- Enumerated
141 btTypedef -- defined via a typedef isymRef
142 btRange -- subrange of int
143 btSet -- pascal sets
144 btComplex -- fortran complex
145 btDComplex -- fortran double complex
146 btIndirect -- forward or unnamed typedef
147 btFixedDec -- Fixed Decimal
148 btFloatDec -- Float Decimal
149 btString -- Varying Length Character String
150 btBit -- Aligned Bit String
151 btPicture -- Picture
152 btVoid -- Void (MIPS cc revision >= 2.00)
153
154 d) tq0 - tq5: type qualifier fields as needed. The
155 current type qualifier fields I have documentation for
156 are:
157
158 tqNil -- no more qualifiers
159 tqPtr -- pointer
160 tqProc -- procedure
161 tqArray -- array
162 tqFar -- 8086 far pointers
163 tqVol -- volatile
164
165 The dense number table is used in the front ends, and disappears by
166 the time the .o is created.
167
168 With the 1.31 compiler suite, the optimization symbols don't seem
169 to be used as far as I can tell.
170
171 The linker is the first entity that creates the relative file
172 descriptor table, and I believe it is used so that the individual
173 file table pointers don't have to be rewritten when the objects are
174 merged together into the program file.
175
176 Unlike COFF, the basic symbol & string tables are split into
177 external and local symbols/strings. The relocation information
178 only goes off of the external symbol table, and the debug
179 information only goes off of the internal symbol table. The
180 external symbols can have links to an appropriate file index and
181 symbol within the file to give it the appropriate type information.
182 Because of this, the external symbols are actually larger than the
183 internal symbols (to contain the link information), and contain the
184 local symbol structure as a member, though this member is not the
185 first member of the external symbol structure (!). I suspect this
186 split is to make strip easier to deal with.
187
188 Each file table has offsets for where the line numbers, local
189 strings, local symbols, and procedure table starts from within the
190 global tables, and the indexs are reset to 0 for each of those
191 tables for the file.
192
193 The procedure table contains the binary equivalents of the .ent
194 (start of the function address), .frame (what register is the
195 virtual frame pointer, constant offset from the register to obtain
196 the VFP, and what register holds the return address), .mask/.fmask
197 (bitmask of saved registers, and where the first register is stored
198 relative to the VFP) assembler directives. It also contains the
199 low and high bounds of the line numbers if debugging is turned on.
200
201 The line number table is a compressed form of the normal COFF line
202 table. Each line number entry is either 1 or 3 bytes long, and
203 contains a signed delta from the previous line, and an unsigned
204 count of the number of instructions this statement takes.
205
206 The local symbol table contains the following fields:
207
208 1) iss: index to the local string table giving the name of the
209 symbol.
210
211 2) value: value of the symbol (address, register number, etc.).
212
213 3) st: symbol type. The current symbol types are:
214
215 stNil -- Nuthin' special
216 stGlobal -- external symbol
217 stStatic -- static
218 stParam -- procedure argument
219 stLocal -- local variable
220 stLabel -- label
221 stProc -- External Procedure
222 stBlock -- beginning of block
223 stEnd -- end (of anything)
224 stMember -- member (of anything)
225 stTypedef -- type definition
226 stFile -- file name
227 stRegReloc -- register relocation
228 stForward -- forwarding address
229 stStaticProc -- Static procedure
230 stConstant -- const
231
232 4) sc: storage class. The current storage classes are:
233
234 scText -- text symbol
235 scData -- initialized data symbol
236 scBss -- un-initialized data symbol
237 scRegister -- value of symbol is register number
238 scAbs -- value of symbol is absolute
239 scUndefined -- who knows?
240 scCdbLocal -- variable's value is IN se->va.??
241 scBits -- this is a bit field
242 scCdbSystem -- value is IN debugger's address space
243 scRegImage -- register value saved on stack
244 scInfo -- symbol contains debugger information
245 scUserStruct -- addr in struct user for current process
246 scSData -- load time only small data
247 scSBss -- load time only small common
248 scRData -- load time only read only data
249 scVar -- Var parameter (fortranpascal)
250 scCommon -- common variable
251 scSCommon -- small common
252 scVarRegister -- Var parameter in a register
253 scVariant -- Variant record
254 scSUndefined -- small undefined(external) data
255 scInit -- .init section symbol
256
257 5) index: pointer to a local symbol or aux. entry.
258
259 For the following program:
260
261 #include <stdio.h>
262
263 main(){
264 printf("Hello World!\n");
265 return 0;
266 }
267
268 Mips-tdump produces the following information:
269
270 Global file header:
271 magic number 0x162
272 # sections 2
273 timestamp 645311799, Wed Jun 13 17:16:39 1990
274 symbolic header offset 284
275 symbolic header size 96
276 optional header 56
277 flags 0x0
278
279 Symbolic header, magic number = 0x7009, vstamp = 1.31:
280
281 Info Offset Number Bytes
282 ==== ====== ====== =====
283
284 Line numbers 380 4 4 [13]
285 Dense numbers 0 0 0
286 Procedures Tables 384 1 52
287 Local Symbols 436 16 192
288 Optimization Symbols 0 0 0
289 Auxiliary Symbols 628 39 156
290 Local Strings 784 80 80
291 External Strings 864 144 144
292 File Tables 1008 2 144
293 Relative Files 0 0 0
294 External Symbols 1152 20 320
295
296 File #0, "hello2.c"
297
298 Name index = 1 Readin = No
299 Merge = No Endian = LITTLE
300 Debug level = G2 Language = C
301 Adr = 0x00000000
302
303 Info Start Number Size Offset
304 ==== ===== ====== ==== ======
305 Local strings 0 15 15 784
306 Local symbols 0 6 72 436
307 Line numbers 0 13 13 380
308 Optimization symbols 0 0 0 0
309 Procedures 0 1 52 384
310 Auxiliary symbols 0 14 56 628
311 Relative Files 0 0 0 0
312
313 There are 6 local symbols, starting at 436
314
315 Symbol# 0: "hello2.c"
316 End+1 symbol = 6
317 String index = 1
318 Storage class = Text Index = 6
319 Symbol type = File Value = 0
320
321 Symbol# 1: "main"
322 End+1 symbol = 5
323 Type = int
324 String index = 10
325 Storage class = Text Index = 12
326 Symbol type = Proc Value = 0
327
328 Symbol# 2: ""
329 End+1 symbol = 4
330 String index = 0
331 Storage class = Text Index = 4
332 Symbol type = Block Value = 8
333
334 Symbol# 3: ""
335 First symbol = 2
336 String index = 0
337 Storage class = Text Index = 2
338 Symbol type = End Value = 28
339
340 Symbol# 4: "main"
341 First symbol = 1
342 String index = 10
343 Storage class = Text Index = 1
344 Symbol type = End Value = 52
345
346 Symbol# 5: "hello2.c"
347 First symbol = 0
348 String index = 1
349 Storage class = Text Index = 0
350 Symbol type = End Value = 0
351
352 There are 14 auxiliary table entries, starting at 628.
353
354 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
355 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
356 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0]
357 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0]
358 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
359 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0]
360 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0]
361 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0]
362 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0]
363 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0]
364 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0]
365 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0]
366 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0]
367 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
368
369 There are 1 procedure descriptor entries, starting at 0.
370
371 Procedure descriptor 0:
372 Name index = 10 Name = "main"
373 .mask 0x80000000,-4 .fmask 0x00000000,0
374 .frame $29,24,$31
375 Opt. start = -1 Symbols start = 1
376 First line # = 3 Last line # = 6
377 Line Offset = 0 Address = 0x00000000
378
379 There are 4 bytes holding line numbers, starting at 380.
380 Line 3, delta 0, count 2
381 Line 4, delta 1, count 3
382 Line 5, delta 1, count 2
383 Line 6, delta 1, count 6
384
385 File #1, "/usr/include/stdio.h"
386
387 Name index = 1 Readin = No
388 Merge = Yes Endian = LITTLE
389 Debug level = G2 Language = C
390 Adr = 0x00000000
391
392 Info Start Number Size Offset
393 ==== ===== ====== ==== ======
394 Local strings 15 65 65 799
395 Local symbols 6 10 120 508
396 Line numbers 0 0 0 380
397 Optimization symbols 0 0 0 0
398 Procedures 1 0 0 436
399 Auxiliary symbols 14 25 100 684
400 Relative Files 0 0 0 0
401
402 There are 10 local symbols, starting at 442
403
404 Symbol# 0: "/usr/include/stdio.h"
405 End+1 symbol = 10
406 String index = 1
407 Storage class = Text Index = 10
408 Symbol type = File Value = 0
409
410 Symbol# 1: "_iobuf"
411 End+1 symbol = 9
412 String index = 22
413 Storage class = Info Index = 9
414 Symbol type = Block Value = 20
415
416 Symbol# 2: "_cnt"
417 Type = int
418 String index = 29
419 Storage class = Info Index = 4
420 Symbol type = Member Value = 0
421
422 Symbol# 3: "_ptr"
423 Type = ptr to char
424 String index = 34
425 Storage class = Info Index = 15
426 Symbol type = Member Value = 32
427
428 Symbol# 4: "_base"
429 Type = ptr to char
430 String index = 39
431 Storage class = Info Index = 16
432 Symbol type = Member Value = 64
433
434 Symbol# 5: "_bufsiz"
435 Type = int
436 String index = 45
437 Storage class = Info Index = 4
438 Symbol type = Member Value = 96
439
440 Symbol# 6: "_flag"
441 Type = short
442 String index = 53
443 Storage class = Info Index = 3
444 Symbol type = Member Value = 128
445
446 Symbol# 7: "_file"
447 Type = char
448 String index = 59
449 Storage class = Info Index = 2
450 Symbol type = Member Value = 144
451
452 Symbol# 8: ""
453 First symbol = 1
454 String index = 0
455 Storage class = Info Index = 1
456 Symbol type = End Value = 0
457
458 Symbol# 9: "/usr/include/stdio.h"
459 First symbol = 0
460 String index = 1
461 Storage class = Text Index = 0
462 Symbol type = End Value = 0
463
464 There are 25 auxiliary table entries, starting at 642.
465
466 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f]
467 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
468 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
469 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0]
470 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1]
471 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
472 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4]
473 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
474 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
475 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0]
476 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0]
477 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
478 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
479 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
480 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
481 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
482 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
483 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
484 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
485 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
486 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
487 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
488 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
489 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
490 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
491
492 There are 0 procedure descriptor entries, starting at 1.
493
494 There are 20 external symbols, starting at 1152
495
496 Symbol# 0: "_iob"
497 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 }
498 String index = 0 Ifd = 1
499 Storage class = Nil Index = 17
500 Symbol type = Global Value = 60
501
502 Symbol# 1: "fopen"
503 String index = 5 Ifd = 1
504 Storage class = Nil Index = 1048575
505 Symbol type = Proc Value = 0
506
507 Symbol# 2: "fdopen"
508 String index = 11 Ifd = 1
509 Storage class = Nil Index = 1048575
510 Symbol type = Proc Value = 0
511
512 Symbol# 3: "freopen"
513 String index = 18 Ifd = 1
514 Storage class = Nil Index = 1048575
515 Symbol type = Proc Value = 0
516
517 Symbol# 4: "popen"
518 String index = 26 Ifd = 1
519 Storage class = Nil Index = 1048575
520 Symbol type = Proc Value = 0
521
522 Symbol# 5: "tmpfile"
523 String index = 32 Ifd = 1
524 Storage class = Nil Index = 1048575
525 Symbol type = Proc Value = 0
526
527 Symbol# 6: "ftell"
528 String index = 40 Ifd = 1
529 Storage class = Nil Index = 1048575
530 Symbol type = Proc Value = 0
531
532 Symbol# 7: "rewind"
533 String index = 46 Ifd = 1
534 Storage class = Nil Index = 1048575
535 Symbol type = Proc Value = 0
536
537 Symbol# 8: "setbuf"
538 String index = 53 Ifd = 1
539 Storage class = Nil Index = 1048575
540 Symbol type = Proc Value = 0
541
542 Symbol# 9: "setbuffer"
543 String index = 60 Ifd = 1
544 Storage class = Nil Index = 1048575
545 Symbol type = Proc Value = 0
546
547 Symbol# 10: "setlinebuf"
548 String index = 70 Ifd = 1
549 Storage class = Nil Index = 1048575
550 Symbol type = Proc Value = 0
551
552 Symbol# 11: "fgets"
553 String index = 81 Ifd = 1
554 Storage class = Nil Index = 1048575
555 Symbol type = Proc Value = 0
556
557 Symbol# 12: "gets"
558 String index = 87 Ifd = 1
559 Storage class = Nil Index = 1048575
560 Symbol type = Proc Value = 0
561
562 Symbol# 13: "ctermid"
563 String index = 92 Ifd = 1
564 Storage class = Nil Index = 1048575
565 Symbol type = Proc Value = 0
566
567 Symbol# 14: "cuserid"
568 String index = 100 Ifd = 1
569 Storage class = Nil Index = 1048575
570 Symbol type = Proc Value = 0
571
572 Symbol# 15: "tempnam"
573 String index = 108 Ifd = 1
574 Storage class = Nil Index = 1048575
575 Symbol type = Proc Value = 0
576
577 Symbol# 16: "tmpnam"
578 String index = 116 Ifd = 1
579 Storage class = Nil Index = 1048575
580 Symbol type = Proc Value = 0
581
582 Symbol# 17: "sprintf"
583 String index = 123 Ifd = 1
584 Storage class = Nil Index = 1048575
585 Symbol type = Proc Value = 0
586
587 Symbol# 18: "main"
588 Type = int
589 String index = 131 Ifd = 0
590 Storage class = Text Index = 1
591 Symbol type = Proc Value = 0
592
593 Symbol# 19: "printf"
594 String index = 136 Ifd = 0
595 Storage class = Undefined Index = 1048575
596 Symbol type = Proc Value = 0
597
598 The following auxiliary table entries were unused:
599
600 #0 0 0x00000000 void
601 #2 8 0x00000008 char
602 #3 16 0x00000010 short
603 #4 24 0x00000018 int
604 #5 32 0x00000020 long
605 #6 40 0x00000028 float
606 #7 44 0x0000002c double
607 #8 12 0x0000000c unsigned char
608 #9 20 0x00000014 unsigned short
609 #10 28 0x0000001c unsigned int
610 #11 36 0x00000024 unsigned long
611 #14 0 0x00000000 void
612 #15 24 0x00000018 int
613 #19 32 0x00000020 long
614 #20 40 0x00000028 float
615 #21 44 0x0000002c double
616 #22 12 0x0000000c unsigned char
617 #23 20 0x00000014 unsigned short
618 #24 28 0x0000001c unsigned int
619 #25 36 0x00000024 unsigned long
620 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 }
621 */
622 \f
623 /* Redefinition of of storage classes as an enumeration for better
624 debugging. */
625
626 typedef enum sc {
627 sc_Nil = scNil, /* no storage class */
628 sc_Text = scText, /* text symbol */
629 sc_Data = scData, /* initialized data symbol */
630 sc_Bss = scBss, /* un-initialized data symbol */
631 sc_Register = scRegister, /* value of symbol is register number */
632 sc_Abs = scAbs, /* value of symbol is absolute */
633 sc_Undefined = scUndefined, /* who knows? */
634 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */
635 sc_Bits = scBits, /* this is a bit field */
636 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */
637 sc_RegImage = scRegImage, /* register value saved on stack */
638 sc_Info = scInfo, /* symbol contains debugger information */
639 sc_UserStruct = scUserStruct, /* addr in struct user for current process */
640 sc_SData = scSData, /* load time only small data */
641 sc_SBss = scSBss, /* load time only small common */
642 sc_RData = scRData, /* load time only read only data */
643 sc_Var = scVar, /* Var parameter (fortran,pascal) */
644 sc_Common = scCommon, /* common variable */
645 sc_SCommon = scSCommon, /* small common */
646 sc_VarRegister = scVarRegister, /* Var parameter in a register */
647 sc_Variant = scVariant, /* Variant record */
648 sc_SUndefined = scSUndefined, /* small undefined(external) data */
649 sc_Init = scInit, /* .init section symbol */
650 sc_Max = scMax /* Max storage class+1 */
651 } sc_t;
652
653 /* Redefinition of symbol type. */
654
655 typedef enum st {
656 st_Nil = stNil, /* Nuthin' special */
657 st_Global = stGlobal, /* external symbol */
658 st_Static = stStatic, /* static */
659 st_Param = stParam, /* procedure argument */
660 st_Local = stLocal, /* local variable */
661 st_Label = stLabel, /* label */
662 st_Proc = stProc, /* " " Procedure */
663 st_Block = stBlock, /* beginning of block */
664 st_End = stEnd, /* end (of anything) */
665 st_Member = stMember, /* member (of anything - struct/union/enum */
666 st_Typedef = stTypedef, /* type definition */
667 st_File = stFile, /* file name */
668 st_RegReloc = stRegReloc, /* register relocation */
669 st_Forward = stForward, /* forwarding address */
670 st_StaticProc = stStaticProc, /* load time only static procs */
671 st_Constant = stConstant, /* const */
672 st_Str = stStr, /* string */
673 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */
674 st_Expr = stExpr, /* 2+2 vs. 4 */
675 st_Type = stType, /* post-coercion SER */
676 st_Max = stMax /* max type+1 */
677 } st_t;
678
679 /* Redefinition of type qualifiers. */
680
681 typedef enum tq {
682 tq_Nil = tqNil, /* bt is what you see */
683 tq_Ptr = tqPtr, /* pointer */
684 tq_Proc = tqProc, /* procedure */
685 tq_Array = tqArray, /* duh */
686 tq_Far = tqFar, /* longer addressing - 8086/8 land */
687 tq_Vol = tqVol, /* volatile */
688 tq_Max = tqMax /* Max type qualifier+1 */
689 } tq_t;
690
691 /* Redefinition of basic types. */
692
693 typedef enum bt {
694 bt_Nil = btNil, /* undefined */
695 bt_Adr = btAdr, /* address - integer same size as pointer */
696 bt_Char = btChar, /* character */
697 bt_UChar = btUChar, /* unsigned character */
698 bt_Short = btShort, /* short */
699 bt_UShort = btUShort, /* unsigned short */
700 bt_Int = btInt, /* int */
701 bt_UInt = btUInt, /* unsigned int */
702 bt_Long = btLong, /* long */
703 bt_ULong = btULong, /* unsigned long */
704 bt_Float = btFloat, /* float (real) */
705 bt_Double = btDouble, /* Double (real) */
706 bt_Struct = btStruct, /* Structure (Record) */
707 bt_Union = btUnion, /* Union (variant) */
708 bt_Enum = btEnum, /* Enumerated */
709 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */
710 bt_Range = btRange, /* subrange of int */
711 bt_Set = btSet, /* pascal sets */
712 bt_Complex = btComplex, /* fortran complex */
713 bt_DComplex = btDComplex, /* fortran double complex */
714 bt_Indirect = btIndirect, /* forward or unnamed typedef */
715 bt_FixedDec = btFixedDec, /* Fixed Decimal */
716 bt_FloatDec = btFloatDec, /* Float Decimal */
717 bt_String = btString, /* Varying Length Character String */
718 bt_Bit = btBit, /* Aligned Bit String */
719 bt_Picture = btPicture, /* Picture */
720 bt_Void = btVoid, /* Void */
721 bt_Max = btMax /* Max basic type+1 */
722 } bt_t;
723
724 #define N_TQ itqMax
725
726 /* States for whether to hash type or not. */
727 typedef enum hash_state {
728 hash_no = 0, /* Don't hash type */
729 hash_yes = 1, /* OK to hash type, or use previous hash */
730 hash_record = 2 /* OK to record hash, but don't use prev. */
731 } hash_state_t;
732
733 /* Types of different sized allocation requests. */
734 enum alloc_type {
735 alloc_type_none, /* dummy value */
736 alloc_type_scope, /* nested scopes linked list */
737 alloc_type_vlinks, /* glue linking pages in varray */
738 alloc_type_shash, /* string hash element */
739 alloc_type_thash, /* type hash element */
740 alloc_type_tag, /* struct/union/tag element */
741 alloc_type_forward, /* element to hold unknown tag */
742 alloc_type_thead, /* head of type hash list */
743 alloc_type_varray, /* general varray allocation */
744 alloc_type_lineno, /* line number list */
745 alloc_type_last /* last+1 element for array bounds */
746 };
747
748 /* Types of auxiliary type information. */
749 enum aux_type {
750 aux_tir, /* TIR type information */
751 aux_rndx, /* relative index into symbol table */
752 aux_dnLow, /* low dimension */
753 aux_dnHigh, /* high dimension */
754 aux_isym, /* symbol table index (end of proc) */
755 aux_iss, /* index into string space (not used) */
756 aux_width, /* width for non-default sized struc fields */
757 aux_count /* count of ranges for variant arm */
758 };
759 \f
760 /* Structures to provide n-number of virtual arrays, each of which can
761 grow linearly, and which are written in the object file as
762 sequential pages. On systems with a BSD malloc, the
763 MAX_CLUSTER_PAGES should be 1 less than a power of two, since
764 malloc adds it's overhead, and rounds up to the next power of 2.
765 Pages are linked together via a linked list.
766
767 If PAGE_SIZE is > 4096, the string length in the shash_t structure
768 can't be represented (assuming there are strings > 4096 bytes). */
769
770 /* FIXME: Yes, there can be such strings while emitting C++ class debug
771 info. Templates are the offender here, the test case in question
772 having a mangled class name of
773
774 t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\
775 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey
776
777 Repeat that a couple dozen times while listing the class members and
778 you've got strings over 4k. Hack around this for now by increasing
779 the page size. A proper solution would abandon this structure scheme
780 certainly for very large strings, and possibly entirely. */
781
782 #ifndef PAGE_SIZE
783 #define PAGE_SIZE (8*1024) /* size of varray pages */
784 #endif
785
786 #define PAGE_USIZE ((unsigned long) PAGE_SIZE)
787
788 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */
789 #define MAX_CLUSTER_PAGES 63
790 #endif
791
792 /* Linked list connecting separate page allocations. */
793 typedef struct vlinks {
794 struct vlinks *prev; /* previous set of pages */
795 struct vlinks *next; /* next set of pages */
796 union page *datum; /* start of page */
797 unsigned long start_index; /* starting index # of page */
798 } vlinks_t;
799
800 /* Virtual array header. */
801 typedef struct varray {
802 vlinks_t *first; /* first page link */
803 vlinks_t *last; /* last page link */
804 unsigned long num_allocated; /* # objects allocated */
805 unsigned short object_size; /* size in bytes of each object */
806 unsigned short objects_per_page; /* # objects that can fit on a page */
807 unsigned short objects_last_page; /* # objects allocated on last page */
808 } varray_t;
809
810 #ifndef MALLOC_CHECK
811 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type))
812 #else
813 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE)
814 #endif
815
816 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \
817 (vlinks_t *)0, /* first */ \
818 (vlinks_t *)0, /* last */ \
819 0, /* num_allocated */ \
820 sizeof (type), /* object_size */ \
821 OBJECTS_PER_PAGE (type), /* objects_per_page */ \
822 OBJECTS_PER_PAGE (type), /* objects_last_page */ \
823 }
824
825 /* Master type for indexes within the symbol table. */
826 typedef unsigned long symint_t;
827
828 /* Linked list support for nested scopes (file, block, structure, etc.). */
829 typedef struct scope {
830 struct scope *prev; /* previous scope level */
831 struct scope *free; /* free list pointer */
832 struct localsym *lsym; /* pointer to local symbol node */
833 st_t type; /* type of the node */
834 } scope_t;
835
836 /* For a local symbol we store a gas symbol as well as the debugging
837 information we generate. The gas symbol will be NULL if this is
838 only a debugging symbol. */
839 typedef struct localsym {
840 const char *name; /* symbol name */
841 symbolS *as_sym; /* symbol as seen by gas */
842 bfd_vma addend; /* addend to as_sym value */
843 struct efdr *file_ptr; /* file pointer */
844 struct ecoff_proc *proc_ptr; /* proc pointer */
845 struct localsym *begin_ptr; /* symbol at start of block */
846 struct ecoff_aux *index_ptr; /* index value to be filled in */
847 struct forward *forward_ref; /* forward references to this symbol */
848 long sym_index; /* final symbol index */
849 EXTR ecoff_sym; /* ECOFF debugging symbol */
850 } localsym_t;
851
852 /* For aux information we keep the type and the data. */
853 typedef struct ecoff_aux {
854 enum aux_type type; /* aux type */
855 AUXU data; /* aux data */
856 } aux_t;
857
858 /* For a procedure we store the gas symbol as well as the PDR
859 debugging information. */
860 typedef struct ecoff_proc {
861 localsym_t *sym; /* associated symbol */
862 PDR pdr; /* ECOFF debugging info */
863 } proc_t;
864
865 /* Number of proc_t structures allocated. */
866 static unsigned long proc_cnt;
867
868 /* Forward reference list for tags referenced, but not yet defined. */
869 typedef struct forward {
870 struct forward *next; /* next forward reference */
871 struct forward *free; /* free list pointer */
872 aux_t *ifd_ptr; /* pointer to store file index */
873 aux_t *index_ptr; /* pointer to store symbol index */
874 } forward_t;
875
876 /* Linked list support for tags. The first tag in the list is always
877 the current tag for that block. */
878 typedef struct tag {
879 struct tag *free; /* free list pointer */
880 struct shash *hash_ptr; /* pointer to the hash table head */
881 struct tag *same_name; /* tag with same name in outer scope */
882 struct tag *same_block; /* next tag defined in the same block. */
883 struct forward *forward_ref; /* list of forward references */
884 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
885 symint_t ifd; /* file # tag defined in */
886 localsym_t *sym; /* file's local symbols */
887 } tag_t;
888
889 /* Head of a block's linked list of tags. */
890 typedef struct thead {
891 struct thead *prev; /* previous block */
892 struct thead *free; /* free list pointer */
893 struct tag *first_tag; /* first tag in block defined */
894 } thead_t;
895
896 /* Union containing pointers to each the small structures which are freed up. */
897 typedef union small_free {
898 scope_t *f_scope; /* scope structure */
899 thead_t *f_thead; /* tag head structure */
900 tag_t *f_tag; /* tag element structure */
901 forward_t *f_forward; /* forward tag reference */
902 } small_free_t;
903
904 /* String hash table entry. */
905
906 typedef struct shash {
907 char *string; /* string we are hashing */
908 symint_t indx; /* index within string table */
909 EXTR *esym_ptr; /* global symbol pointer */
910 localsym_t *sym_ptr; /* local symbol pointer */
911 localsym_t *end_ptr; /* symbol pointer to end block */
912 tag_t *tag_ptr; /* tag pointer */
913 proc_t *proc_ptr; /* procedure descriptor pointer */
914 } shash_t;
915
916 /* Type hash table support. The size of the hash table must fit
917 within a page with the other extended file descriptor information.
918 Because unique types which are hashed are fewer in number than
919 strings, we use a smaller hash value. */
920
921 #define HASHBITS 30
922
923 #ifndef THASH_SIZE
924 #define THASH_SIZE 113
925 #endif
926
927 typedef struct thash {
928 struct thash *next; /* next hash value */
929 AUXU type; /* type we are hashing */
930 symint_t indx; /* index within string table */
931 } thash_t;
932
933 /* Extended file descriptor that contains all of the support necessary
934 to add things to each file separately. */
935 typedef struct efdr {
936 FDR fdr; /* File header to be written out */
937 FDR *orig_fdr; /* original file header */
938 char *name; /* filename */
939 int fake; /* whether this is faked .file */
940 symint_t void_type; /* aux. pointer to 'void' type */
941 symint_t int_type; /* aux. pointer to 'int' type */
942 scope_t *cur_scope; /* current nested scopes */
943 symint_t file_index; /* current file number */
944 int nested_scopes; /* # nested scopes */
945 varray_t strings; /* local strings */
946 varray_t symbols; /* local symbols */
947 varray_t procs; /* procedures */
948 varray_t aux_syms; /* auxiliary symbols */
949 struct efdr *next_file; /* next file descriptor */
950 /* string/type hash tables */
951 struct hash_control *str_hash; /* string hash table */
952 thash_t *thash_head[THASH_SIZE];
953 } efdr_t;
954
955 /* Pre-initialized extended file structure. */
956 static const efdr_t init_file = {
957 { /* FDR structure */
958 0, /* adr: memory address of beginning of file */
959 0, /* rss: file name (of source, if known) */
960 0, /* issBase: file's string space */
961 0, /* cbSs: number of bytes in the ss */
962 0, /* isymBase: beginning of symbols */
963 0, /* csym: count file's of symbols */
964 0, /* ilineBase: file's line symbols */
965 0, /* cline: count of file's line symbols */
966 0, /* ioptBase: file's optimization entries */
967 0, /* copt: count of file's optimization entries */
968 0, /* ipdFirst: start of procedures for this file */
969 0, /* cpd: count of procedures for this file */
970 0, /* iauxBase: file's auxiliary entries */
971 0, /* caux: count of file's auxiliary entries */
972 0, /* rfdBase: index into the file indirect table */
973 0, /* crfd: count file indirect entries */
974 langC, /* lang: language for this file */
975 1, /* fMerge: whether this file can be merged */
976 0, /* fReadin: true if read in (not just created) */
977 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */
978 GLEVEL_2, /* glevel: level this file was compiled with */
979 0, /* reserved: reserved for future use */
980 0, /* cbLineOffset: byte offset from header for this file ln's */
981 0, /* cbLine: size of lines for this file */
982 },
983
984 (FDR *)0, /* orig_fdr: original file header pointer */
985 (char *)0, /* name: pointer to filename */
986 0, /* fake: whether this is a faked .file */
987 0, /* void_type: ptr to aux node for void type */
988 0, /* int_type: ptr to aux node for int type */
989 (scope_t *)0, /* cur_scope: current scope being processed */
990 0, /* file_index: current file # */
991 0, /* nested_scopes: # nested scopes */
992 INIT_VARRAY (char), /* strings: local string varray */
993 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */
994 INIT_VARRAY (proc_t), /* procs: procedure varray */
995 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */
996
997 (struct efdr *)0, /* next_file: next file structure */
998
999 (struct hash_control *)0, /* str_hash: string hash table */
1000 { 0 }, /* thash_head: type hash table */
1001 };
1002
1003 static efdr_t *first_file; /* first file descriptor */
1004 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */
1005
1006 /* Line number information is kept in a list until the assembly is
1007 finished. */
1008 typedef struct lineno_list {
1009 struct lineno_list *next; /* next element in list */
1010 efdr_t *file; /* file this line is in */
1011 proc_t *proc; /* procedure this line is in */
1012 fragS *frag; /* fragment this line number is in */
1013 unsigned long paddr; /* offset within fragment */
1014 long lineno; /* actual line number */
1015 } lineno_list_t;
1016
1017 static lineno_list_t *first_lineno;
1018 static lineno_list_t *last_lineno;
1019 static lineno_list_t **last_lineno_ptr = &first_lineno;
1020
1021 /* Sometimes there will be some .loc statements before a .ent. We
1022 keep them in this list so that we can fill in the procedure pointer
1023 after we see the .ent. */
1024 static lineno_list_t *noproc_lineno;
1025
1026 /* Union of various things that are held in pages. */
1027 typedef union page {
1028 char byte [ PAGE_SIZE ];
1029 unsigned char ubyte [ PAGE_SIZE ];
1030 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ];
1031 FDR ofile [ PAGE_SIZE / sizeof (FDR) ];
1032 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ];
1033 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ];
1034 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ];
1035 DNR dense [ PAGE_SIZE / sizeof (DNR) ];
1036 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ];
1037 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ];
1038 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ];
1039 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ];
1040 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ];
1041 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ];
1042 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ];
1043 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ];
1044 } page_type;
1045
1046 /* Structure holding allocation information for small sized structures. */
1047 typedef struct alloc_info {
1048 char *alloc_name; /* name of this allocation type (must be first) */
1049 page_type *cur_page; /* current page being allocated from */
1050 small_free_t free_list; /* current free list if any */
1051 int unallocated; /* number of elements unallocated on page */
1052 int total_alloc; /* total number of allocations */
1053 int total_free; /* total number of frees */
1054 int total_pages; /* total number of pages allocated */
1055 } alloc_info_t;
1056
1057 /* Type information collected together. */
1058 typedef struct type_info {
1059 bt_t basic_type; /* basic type */
1060 int orig_type; /* original COFF-based type */
1061 int num_tq; /* # type qualifiers */
1062 int num_dims; /* # dimensions */
1063 int num_sizes; /* # sizes */
1064 int extra_sizes; /* # extra sizes not tied with dims */
1065 tag_t * tag_ptr; /* tag pointer */
1066 int bitfield; /* symbol is a bitfield */
1067 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/
1068 symint_t dimensions [N_TQ]; /* dimensions for each array */
1069 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of
1070 struct/union/enum + bitfield size */
1071 } type_info_t;
1072
1073 /* Pre-initialized type_info struct. */
1074 static const type_info_t type_info_init = {
1075 bt_Nil, /* basic type */
1076 T_NULL, /* original COFF-based type */
1077 0, /* # type qualifiers */
1078 0, /* # dimensions */
1079 0, /* # sizes */
1080 0, /* sizes not tied with dims */
1081 NULL, /* ptr to tag */
1082 0, /* bitfield */
1083 { /* type qualifiers */
1084 tq_Nil,
1085 tq_Nil,
1086 tq_Nil,
1087 tq_Nil,
1088 tq_Nil,
1089 tq_Nil,
1090 },
1091 { /* dimensions */
1092 0,
1093 0,
1094 0,
1095 0,
1096 0,
1097 0
1098 },
1099 { /* sizes */
1100 0,
1101 0,
1102 0,
1103 0,
1104 0,
1105 0,
1106 0,
1107 0,
1108 },
1109 };
1110
1111 /* Global hash table for the tags table and global table for file
1112 descriptors. */
1113
1114 static varray_t file_desc = INIT_VARRAY (efdr_t);
1115
1116 static struct hash_control *tag_hash;
1117
1118 /* Static types for int and void. Also, remember the last function's
1119 type (which is set up when we encounter the declaration for the
1120 function, and used when the end block for the function is emitted. */
1121
1122 static type_info_t int_type_info;
1123 static type_info_t void_type_info;
1124 static type_info_t last_func_type_info;
1125 static symbolS *last_func_sym_value;
1126
1127 /* Convert COFF basic type to ECOFF basic type. The T_NULL type
1128 really should use bt_Void, but this causes the current ecoff GDB to
1129 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS
1130 2.0) doesn't understand it, even though the compiler generates it.
1131 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler
1132 suite, but for now go with what works.
1133
1134 It would make sense for the .type and .scl directives to use the
1135 ECOFF numbers directly, rather than using the COFF numbers and
1136 mapping them. Unfortunately, this is historically what mips-tfile
1137 expects, and changing gcc now would be a considerable pain (the
1138 native compiler generates debugging information internally, rather
1139 than via the assembler, so it will never use .type or .scl). */
1140
1141 static const bt_t map_coff_types[] = {
1142 bt_Nil, /* T_NULL */
1143 bt_Nil, /* T_ARG */
1144 bt_Char, /* T_CHAR */
1145 bt_Short, /* T_SHORT */
1146 bt_Int, /* T_INT */
1147 bt_Long, /* T_LONG */
1148 bt_Float, /* T_FLOAT */
1149 bt_Double, /* T_DOUBLE */
1150 bt_Struct, /* T_STRUCT */
1151 bt_Union, /* T_UNION */
1152 bt_Enum, /* T_ENUM */
1153 bt_Enum, /* T_MOE */
1154 bt_UChar, /* T_UCHAR */
1155 bt_UShort, /* T_USHORT */
1156 bt_UInt, /* T_UINT */
1157 bt_ULong /* T_ULONG */
1158 };
1159
1160 /* Convert COFF storage class to ECOFF storage class. */
1161 static const sc_t map_coff_storage[] = {
1162 sc_Nil, /* 0: C_NULL */
1163 sc_Abs, /* 1: C_AUTO auto var */
1164 sc_Undefined, /* 2: C_EXT external */
1165 sc_Data, /* 3: C_STAT static */
1166 sc_Register, /* 4: C_REG register */
1167 sc_Undefined, /* 5: C_EXTDEF ??? */
1168 sc_Text, /* 6: C_LABEL label */
1169 sc_Text, /* 7: C_ULABEL user label */
1170 sc_Info, /* 8: C_MOS member of struct */
1171 sc_Abs, /* 9: C_ARG argument */
1172 sc_Info, /* 10: C_STRTAG struct tag */
1173 sc_Info, /* 11: C_MOU member of union */
1174 sc_Info, /* 12: C_UNTAG union tag */
1175 sc_Info, /* 13: C_TPDEF typedef */
1176 sc_Data, /* 14: C_USTATIC ??? */
1177 sc_Info, /* 15: C_ENTAG enum tag */
1178 sc_Info, /* 16: C_MOE member of enum */
1179 sc_Register, /* 17: C_REGPARM register parameter */
1180 sc_Bits, /* 18; C_FIELD bitfield */
1181 sc_Nil, /* 19 */
1182 sc_Nil, /* 20 */
1183 sc_Nil, /* 21 */
1184 sc_Nil, /* 22 */
1185 sc_Nil, /* 23 */
1186 sc_Nil, /* 24 */
1187 sc_Nil, /* 25 */
1188 sc_Nil, /* 26 */
1189 sc_Nil, /* 27 */
1190 sc_Nil, /* 28 */
1191 sc_Nil, /* 29 */
1192 sc_Nil, /* 30 */
1193 sc_Nil, /* 31 */
1194 sc_Nil, /* 32 */
1195 sc_Nil, /* 33 */
1196 sc_Nil, /* 34 */
1197 sc_Nil, /* 35 */
1198 sc_Nil, /* 36 */
1199 sc_Nil, /* 37 */
1200 sc_Nil, /* 38 */
1201 sc_Nil, /* 39 */
1202 sc_Nil, /* 40 */
1203 sc_Nil, /* 41 */
1204 sc_Nil, /* 42 */
1205 sc_Nil, /* 43 */
1206 sc_Nil, /* 44 */
1207 sc_Nil, /* 45 */
1208 sc_Nil, /* 46 */
1209 sc_Nil, /* 47 */
1210 sc_Nil, /* 48 */
1211 sc_Nil, /* 49 */
1212 sc_Nil, /* 50 */
1213 sc_Nil, /* 51 */
1214 sc_Nil, /* 52 */
1215 sc_Nil, /* 53 */
1216 sc_Nil, /* 54 */
1217 sc_Nil, /* 55 */
1218 sc_Nil, /* 56 */
1219 sc_Nil, /* 57 */
1220 sc_Nil, /* 58 */
1221 sc_Nil, /* 59 */
1222 sc_Nil, /* 60 */
1223 sc_Nil, /* 61 */
1224 sc_Nil, /* 62 */
1225 sc_Nil, /* 63 */
1226 sc_Nil, /* 64 */
1227 sc_Nil, /* 65 */
1228 sc_Nil, /* 66 */
1229 sc_Nil, /* 67 */
1230 sc_Nil, /* 68 */
1231 sc_Nil, /* 69 */
1232 sc_Nil, /* 70 */
1233 sc_Nil, /* 71 */
1234 sc_Nil, /* 72 */
1235 sc_Nil, /* 73 */
1236 sc_Nil, /* 74 */
1237 sc_Nil, /* 75 */
1238 sc_Nil, /* 76 */
1239 sc_Nil, /* 77 */
1240 sc_Nil, /* 78 */
1241 sc_Nil, /* 79 */
1242 sc_Nil, /* 80 */
1243 sc_Nil, /* 81 */
1244 sc_Nil, /* 82 */
1245 sc_Nil, /* 83 */
1246 sc_Nil, /* 84 */
1247 sc_Nil, /* 85 */
1248 sc_Nil, /* 86 */
1249 sc_Nil, /* 87 */
1250 sc_Nil, /* 88 */
1251 sc_Nil, /* 89 */
1252 sc_Nil, /* 90 */
1253 sc_Nil, /* 91 */
1254 sc_Nil, /* 92 */
1255 sc_Nil, /* 93 */
1256 sc_Nil, /* 94 */
1257 sc_Nil, /* 95 */
1258 sc_Nil, /* 96 */
1259 sc_Nil, /* 97 */
1260 sc_Nil, /* 98 */
1261 sc_Nil, /* 99 */
1262 sc_Text, /* 100: C_BLOCK block start/end */
1263 sc_Text, /* 101: C_FCN function start/end */
1264 sc_Info, /* 102: C_EOS end of struct/union/enum */
1265 sc_Nil, /* 103: C_FILE file start */
1266 sc_Nil, /* 104: C_LINE line number */
1267 sc_Nil, /* 105: C_ALIAS combined type info */
1268 sc_Nil, /* 106: C_HIDDEN ??? */
1269 };
1270
1271 /* Convert COFF storage class to ECOFF symbol type. */
1272 static const st_t map_coff_sym_type[] = {
1273 st_Nil, /* 0: C_NULL */
1274 st_Local, /* 1: C_AUTO auto var */
1275 st_Global, /* 2: C_EXT external */
1276 st_Static, /* 3: C_STAT static */
1277 st_Local, /* 4: C_REG register */
1278 st_Global, /* 5: C_EXTDEF ??? */
1279 st_Label, /* 6: C_LABEL label */
1280 st_Label, /* 7: C_ULABEL user label */
1281 st_Member, /* 8: C_MOS member of struct */
1282 st_Param, /* 9: C_ARG argument */
1283 st_Block, /* 10: C_STRTAG struct tag */
1284 st_Member, /* 11: C_MOU member of union */
1285 st_Block, /* 12: C_UNTAG union tag */
1286 st_Typedef, /* 13: C_TPDEF typedef */
1287 st_Static, /* 14: C_USTATIC ??? */
1288 st_Block, /* 15: C_ENTAG enum tag */
1289 st_Member, /* 16: C_MOE member of enum */
1290 st_Param, /* 17: C_REGPARM register parameter */
1291 st_Member, /* 18; C_FIELD bitfield */
1292 st_Nil, /* 19 */
1293 st_Nil, /* 20 */
1294 st_Nil, /* 21 */
1295 st_Nil, /* 22 */
1296 st_Nil, /* 23 */
1297 st_Nil, /* 24 */
1298 st_Nil, /* 25 */
1299 st_Nil, /* 26 */
1300 st_Nil, /* 27 */
1301 st_Nil, /* 28 */
1302 st_Nil, /* 29 */
1303 st_Nil, /* 30 */
1304 st_Nil, /* 31 */
1305 st_Nil, /* 32 */
1306 st_Nil, /* 33 */
1307 st_Nil, /* 34 */
1308 st_Nil, /* 35 */
1309 st_Nil, /* 36 */
1310 st_Nil, /* 37 */
1311 st_Nil, /* 38 */
1312 st_Nil, /* 39 */
1313 st_Nil, /* 40 */
1314 st_Nil, /* 41 */
1315 st_Nil, /* 42 */
1316 st_Nil, /* 43 */
1317 st_Nil, /* 44 */
1318 st_Nil, /* 45 */
1319 st_Nil, /* 46 */
1320 st_Nil, /* 47 */
1321 st_Nil, /* 48 */
1322 st_Nil, /* 49 */
1323 st_Nil, /* 50 */
1324 st_Nil, /* 51 */
1325 st_Nil, /* 52 */
1326 st_Nil, /* 53 */
1327 st_Nil, /* 54 */
1328 st_Nil, /* 55 */
1329 st_Nil, /* 56 */
1330 st_Nil, /* 57 */
1331 st_Nil, /* 58 */
1332 st_Nil, /* 59 */
1333 st_Nil, /* 60 */
1334 st_Nil, /* 61 */
1335 st_Nil, /* 62 */
1336 st_Nil, /* 63 */
1337 st_Nil, /* 64 */
1338 st_Nil, /* 65 */
1339 st_Nil, /* 66 */
1340 st_Nil, /* 67 */
1341 st_Nil, /* 68 */
1342 st_Nil, /* 69 */
1343 st_Nil, /* 70 */
1344 st_Nil, /* 71 */
1345 st_Nil, /* 72 */
1346 st_Nil, /* 73 */
1347 st_Nil, /* 74 */
1348 st_Nil, /* 75 */
1349 st_Nil, /* 76 */
1350 st_Nil, /* 77 */
1351 st_Nil, /* 78 */
1352 st_Nil, /* 79 */
1353 st_Nil, /* 80 */
1354 st_Nil, /* 81 */
1355 st_Nil, /* 82 */
1356 st_Nil, /* 83 */
1357 st_Nil, /* 84 */
1358 st_Nil, /* 85 */
1359 st_Nil, /* 86 */
1360 st_Nil, /* 87 */
1361 st_Nil, /* 88 */
1362 st_Nil, /* 89 */
1363 st_Nil, /* 90 */
1364 st_Nil, /* 91 */
1365 st_Nil, /* 92 */
1366 st_Nil, /* 93 */
1367 st_Nil, /* 94 */
1368 st_Nil, /* 95 */
1369 st_Nil, /* 96 */
1370 st_Nil, /* 97 */
1371 st_Nil, /* 98 */
1372 st_Nil, /* 99 */
1373 st_Block, /* 100: C_BLOCK block start/end */
1374 st_Proc, /* 101: C_FCN function start/end */
1375 st_End, /* 102: C_EOS end of struct/union/enum */
1376 st_File, /* 103: C_FILE file start */
1377 st_Nil, /* 104: C_LINE line number */
1378 st_Nil, /* 105: C_ALIAS combined type info */
1379 st_Nil, /* 106: C_HIDDEN ??? */
1380 };
1381
1382 /* Keep track of different sized allocation requests. */
1383 static alloc_info_t alloc_counts[(int) alloc_type_last];
1384 \f
1385 /* Record whether we have seen any debugging information. */
1386 int ecoff_debugging_seen = 0;
1387
1388 /* Various statics. */
1389 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */
1390 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */
1391 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */
1392 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */
1393 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */
1394 #ifdef ECOFF_DEBUG
1395 static int debug = 0; /* trace functions */
1396 #endif
1397 static int stabs_seen = 0; /* != 0 if stabs have been seen */
1398
1399 static int current_file_idx;
1400 static const char *current_stabs_filename;
1401
1402 /* Pseudo symbol to use when putting stabs into the symbol table. */
1403 #ifndef STABS_SYMBOL
1404 #define STABS_SYMBOL "@stabs"
1405 #endif
1406
1407 static char stabs_symbol[] = STABS_SYMBOL;
1408 \f
1409 /* Prototypes for functions defined in this file. */
1410
1411 static void add_varray_page PARAMS ((varray_t *vp));
1412 static symint_t add_string PARAMS ((varray_t *vp,
1413 struct hash_control *hash_tbl,
1414 const char *str,
1415 shash_t **ret_hash));
1416 static localsym_t *add_ecoff_symbol PARAMS ((const char *str, st_t type,
1417 sc_t storage, symbolS *sym,
1418 bfd_vma addend, symint_t value,
1419 symint_t indx));
1420 static symint_t add_aux_sym_symint PARAMS ((symint_t aux_word));
1421 static symint_t add_aux_sym_rndx PARAMS ((int file_index,
1422 symint_t sym_index));
1423 static symint_t add_aux_sym_tir PARAMS ((type_info_t *t,
1424 hash_state_t state,
1425 thash_t **hash_tbl));
1426 static tag_t *get_tag PARAMS ((const char *tag, localsym_t *sym,
1427 bt_t basic_type));
1428 static void add_unknown_tag PARAMS ((tag_t *ptag));
1429 static void add_procedure PARAMS ((char *func));
1430 static void add_file PARAMS ((const char *file_name, int indx, int fake));
1431 #ifdef ECOFF_DEBUG
1432 static char *sc_to_string PARAMS ((sc_t storage_class));
1433 static char *st_to_string PARAMS ((st_t symbol_type));
1434 #endif
1435 static void mark_stabs PARAMS ((int));
1436 static char *ecoff_add_bytes PARAMS ((char **buf, char **bufend,
1437 char *bufptr, unsigned long need));
1438 static unsigned long ecoff_padding_adjust
1439 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1440 unsigned long offset, char **bufptrptr));
1441 static unsigned long ecoff_build_lineno
1442 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1443 unsigned long offset, long *linecntptr));
1444 static unsigned long ecoff_build_symbols
1445 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1446 unsigned long offset));
1447 static unsigned long ecoff_build_procs
1448 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1449 unsigned long offset));
1450 static unsigned long ecoff_build_aux
1451 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1452 unsigned long offset));
1453 static unsigned long ecoff_build_strings PARAMS ((char **buf, char **bufend,
1454 unsigned long offset,
1455 varray_t *vp));
1456 static unsigned long ecoff_build_ss
1457 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1458 unsigned long offset));
1459 static unsigned long ecoff_build_fdr
1460 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1461 unsigned long offset));
1462 static void ecoff_setup_ext PARAMS ((void));
1463 static page_type *allocate_cluster PARAMS ((unsigned long npages));
1464 static page_type *allocate_page PARAMS ((void));
1465 static scope_t *allocate_scope PARAMS ((void));
1466 static void free_scope PARAMS ((scope_t *ptr));
1467 static vlinks_t *allocate_vlinks PARAMS ((void));
1468 static shash_t *allocate_shash PARAMS ((void));
1469 static thash_t *allocate_thash PARAMS ((void));
1470 static tag_t *allocate_tag PARAMS ((void));
1471 static void free_tag PARAMS ((tag_t *ptr));
1472 static forward_t *allocate_forward PARAMS ((void));
1473 static thead_t *allocate_thead PARAMS ((void));
1474 static void free_thead PARAMS ((thead_t *ptr));
1475 static lineno_list_t *allocate_lineno_list PARAMS ((void));
1476 \f
1477 /* This function should be called when the assembler starts up. */
1478
1479 void
1480 ecoff_read_begin_hook ()
1481 {
1482 tag_hash = hash_new ();
1483 top_tag_head = allocate_thead ();
1484 top_tag_head->first_tag = (tag_t *) NULL;
1485 top_tag_head->free = (thead_t *) NULL;
1486 top_tag_head->prev = cur_tag_head;
1487 cur_tag_head = top_tag_head;
1488 }
1489
1490 /* This function should be called when a symbol is created. */
1491
1492 void
1493 ecoff_symbol_new_hook (symbolP)
1494 symbolS *symbolP;
1495 {
1496 OBJ_SYMFIELD_TYPE *obj;
1497
1498 /* Make sure that we have a file pointer, but only if we have seen a
1499 file. If we haven't seen a file, then this is a probably special
1500 symbol created by md_begin which may required special handling at
1501 some point. Creating a dummy file with a dummy name is certainly
1502 wrong. */
1503 if (cur_file_ptr == (efdr_t *) NULL
1504 && seen_at_least_1_file ())
1505 add_file ((const char *) NULL, 0, 1);
1506 obj = symbol_get_obj (symbolP);
1507 obj->ecoff_file = cur_file_ptr;
1508 obj->ecoff_symbol = NULL;
1509 obj->ecoff_extern_size = 0;
1510 }
1511 \f
1512 /* Add a page to a varray object. */
1513
1514 static void
1515 add_varray_page (vp)
1516 varray_t *vp; /* varray to add page to */
1517 {
1518 vlinks_t *new_links = allocate_vlinks ();
1519
1520 #ifdef MALLOC_CHECK
1521 if (vp->object_size > 1)
1522 new_links->datum = (page_type *) xcalloc (1, vp->object_size);
1523 else
1524 #endif
1525 new_links->datum = allocate_page ();
1526
1527 alloc_counts[(int) alloc_type_varray].total_alloc++;
1528 alloc_counts[(int) alloc_type_varray].total_pages++;
1529
1530 new_links->start_index = vp->num_allocated;
1531 vp->objects_last_page = 0;
1532
1533 if (vp->first == (vlinks_t *) NULL) /* first allocation? */
1534 vp->first = vp->last = new_links;
1535 else
1536 { /* 2nd or greater allocation */
1537 new_links->prev = vp->last;
1538 vp->last->next = new_links;
1539 vp->last = new_links;
1540 }
1541 }
1542 \f
1543 /* Add a string (and null pad) to one of the string tables. */
1544
1545 static symint_t
1546 add_string (vp, hash_tbl, str, ret_hash)
1547 varray_t *vp; /* string obstack */
1548 struct hash_control *hash_tbl; /* ptr to hash table */
1549 const char *str; /* string */
1550 shash_t **ret_hash; /* return hash pointer */
1551 {
1552 register unsigned long len = strlen (str);
1553 register shash_t *hash_ptr;
1554
1555 if (len >= PAGE_USIZE)
1556 as_fatal (_("String too big (%lu bytes)"), len);
1557
1558 hash_ptr = (shash_t *) hash_find (hash_tbl, str);
1559 if (hash_ptr == (shash_t *) NULL)
1560 {
1561 register const char *err;
1562
1563 if (vp->objects_last_page + len >= PAGE_USIZE)
1564 {
1565 vp->num_allocated =
1566 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE;
1567 add_varray_page (vp);
1568 }
1569
1570 hash_ptr = allocate_shash ();
1571 hash_ptr->indx = vp->num_allocated;
1572
1573 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page];
1574
1575 vp->objects_last_page += len + 1;
1576 vp->num_allocated += len + 1;
1577
1578 strcpy (hash_ptr->string, str);
1579
1580 err = hash_insert (hash_tbl, str, (char *) hash_ptr);
1581 if (err)
1582 as_fatal (_("Inserting \"%s\" into string hash table: %s"),
1583 str, err);
1584 }
1585
1586 if (ret_hash != (shash_t **) NULL)
1587 *ret_hash = hash_ptr;
1588
1589 return hash_ptr->indx;
1590 }
1591 \f
1592 /* Add debugging information for a symbol. */
1593
1594 static localsym_t *
1595 add_ecoff_symbol (str, type, storage, sym_value, addend, value, indx)
1596 const char *str; /* symbol name */
1597 st_t type; /* symbol type */
1598 sc_t storage; /* storage class */
1599 symbolS *sym_value; /* associated symbol. */
1600 bfd_vma addend; /* addend to sym_value. */
1601 symint_t value; /* value of symbol */
1602 symint_t indx; /* index to local/aux. syms */
1603 {
1604 localsym_t *psym;
1605 register scope_t *pscope;
1606 register thead_t *ptag_head;
1607 register tag_t *ptag;
1608 register tag_t *ptag_next;
1609 register varray_t *vp;
1610 register int scope_delta = 0;
1611 shash_t *hash_ptr = (shash_t *) NULL;
1612
1613 if (cur_file_ptr == (efdr_t *) NULL)
1614 as_fatal (_("no current file pointer"));
1615
1616 vp = &cur_file_ptr->symbols;
1617
1618 if (vp->objects_last_page == vp->objects_per_page)
1619 add_varray_page (vp);
1620
1621 psym = &vp->last->datum->sym[vp->objects_last_page++];
1622
1623 if (str == (const char *) NULL && sym_value != (symbolS *) NULL)
1624 psym->name = S_GET_NAME (sym_value);
1625 else
1626 psym->name = str;
1627 psym->as_sym = sym_value;
1628 if (sym_value != (symbolS *) NULL)
1629 symbol_get_obj (sym_value)->ecoff_symbol = psym;
1630 psym->addend = addend;
1631 psym->file_ptr = cur_file_ptr;
1632 psym->proc_ptr = cur_proc_ptr;
1633 psym->begin_ptr = (localsym_t *) NULL;
1634 psym->index_ptr = (aux_t *) NULL;
1635 psym->forward_ref = (forward_t *) NULL;
1636 psym->sym_index = -1;
1637 memset (&psym->ecoff_sym, 0, sizeof (EXTR));
1638 psym->ecoff_sym.asym.value = value;
1639 psym->ecoff_sym.asym.st = (unsigned) type;
1640 psym->ecoff_sym.asym.sc = (unsigned) storage;
1641 psym->ecoff_sym.asym.index = indx;
1642
1643 /* If there is an associated symbol, we wait until the end of the
1644 assembly before deciding where to put the name (it may be just an
1645 external symbol). Otherwise, this is just a debugging symbol and
1646 the name should go with the current file. */
1647 if (sym_value == (symbolS *) NULL)
1648 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL)
1649 ? 0
1650 : add_string (&cur_file_ptr->strings,
1651 cur_file_ptr->str_hash,
1652 str,
1653 &hash_ptr));
1654
1655 ++vp->num_allocated;
1656
1657 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym))
1658 return psym;
1659
1660 /* Save the symbol within the hash table if this is a static
1661 item, and it has a name. */
1662 if (hash_ptr != (shash_t *) NULL
1663 && (type == st_Global || type == st_Static || type == st_Label
1664 || type == st_Proc || type == st_StaticProc))
1665 hash_ptr->sym_ptr = psym;
1666
1667 /* push or pop a scope if appropriate. */
1668 switch (type)
1669 {
1670 default:
1671 break;
1672
1673 case st_File: /* beginning of file */
1674 case st_Proc: /* procedure */
1675 case st_StaticProc: /* static procedure */
1676 case st_Block: /* begin scope */
1677 pscope = allocate_scope ();
1678 pscope->prev = cur_file_ptr->cur_scope;
1679 pscope->lsym = psym;
1680 pscope->type = type;
1681 cur_file_ptr->cur_scope = pscope;
1682
1683 if (type != st_File)
1684 scope_delta = 1;
1685
1686 /* For every block type except file, struct, union, or
1687 enumeration blocks, push a level on the tag stack. We omit
1688 file types, so that tags can span file boundaries. */
1689 if (type != st_File && storage != sc_Info)
1690 {
1691 ptag_head = allocate_thead ();
1692 ptag_head->first_tag = 0;
1693 ptag_head->prev = cur_tag_head;
1694 cur_tag_head = ptag_head;
1695 }
1696 break;
1697
1698 case st_End:
1699 pscope = cur_file_ptr->cur_scope;
1700 if (pscope == (scope_t *) NULL)
1701 as_fatal (_("too many st_End's"));
1702 else
1703 {
1704 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st;
1705
1706 psym->begin_ptr = pscope->lsym;
1707
1708 if (begin_type != st_File)
1709 scope_delta = -1;
1710
1711 /* Except for file, structure, union, or enumeration end
1712 blocks remove all tags created within this scope. */
1713 if (begin_type != st_File && storage != sc_Info)
1714 {
1715 ptag_head = cur_tag_head;
1716 cur_tag_head = ptag_head->prev;
1717
1718 for (ptag = ptag_head->first_tag;
1719 ptag != (tag_t *) NULL;
1720 ptag = ptag_next)
1721 {
1722 if (ptag->forward_ref != (forward_t *) NULL)
1723 add_unknown_tag (ptag);
1724
1725 ptag_next = ptag->same_block;
1726 ptag->hash_ptr->tag_ptr = ptag->same_name;
1727 free_tag (ptag);
1728 }
1729
1730 free_thead (ptag_head);
1731 }
1732
1733 cur_file_ptr->cur_scope = pscope->prev;
1734
1735 /* block begin gets next sym #. This is set when we know
1736 the symbol index value. */
1737
1738 /* Functions push two or more aux words as follows:
1739 1st word: index+1 of the end symbol (filled in later).
1740 2nd word: type of the function (plus any aux words needed).
1741 Also, tie the external pointer back to the function begin symbol. */
1742 if (begin_type != st_File && begin_type != st_Block)
1743 {
1744 symint_t ty;
1745 varray_t *svp = &cur_file_ptr->aux_syms;
1746
1747 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0);
1748 pscope->lsym->index_ptr =
1749 &svp->last->datum->aux[svp->objects_last_page - 1];
1750 ty = add_aux_sym_tir (&last_func_type_info,
1751 hash_no,
1752 &cur_file_ptr->thash_head[0]);
1753
1754 /* This seems to be unnecessary. I'm not even sure what it is
1755 * intended to do. It's from mips-tfile.
1756 * if (last_func_sym_value != (symbolS *) NULL)
1757 * {
1758 * last_func_sym_value->ifd = cur_file_ptr->file_index;
1759 * last_func_sym_value->index = ty;
1760 * }
1761 */
1762 }
1763
1764 free_scope (pscope);
1765 }
1766 }
1767
1768 cur_file_ptr->nested_scopes += scope_delta;
1769
1770 #ifdef ECOFF_DEBUG
1771 if (debug && type != st_File
1772 && (debug > 2 || type == st_Block || type == st_End
1773 || type == st_Proc || type == st_StaticProc))
1774 {
1775 char *sc_str = sc_to_string (storage);
1776 char *st_str = st_to_string (type);
1777 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0);
1778
1779 fprintf (stderr,
1780 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s",
1781 value, depth, sc_str);
1782
1783 if (str_start && str_end_p1 - str_start > 0)
1784 fprintf (stderr, " st= %-11s name= %.*s\n",
1785 st_str, str_end_p1 - str_start, str_start);
1786 else
1787 {
1788 unsigned long len = strlen (st_str);
1789 fprintf (stderr, " st= %.*s\n", len - 1, st_str);
1790 }
1791 }
1792 #endif
1793
1794 return psym;
1795 }
1796 \f
1797 /* Add an auxiliary symbol (passing a symint). This is actually used
1798 for integral aux types, not just symints. */
1799
1800 static symint_t
1801 add_aux_sym_symint (aux_word)
1802 symint_t aux_word; /* auxiliary information word */
1803 {
1804 register varray_t *vp;
1805 register aux_t *aux_ptr;
1806
1807 if (cur_file_ptr == (efdr_t *) NULL)
1808 as_fatal (_("no current file pointer"));
1809
1810 vp = &cur_file_ptr->aux_syms;
1811
1812 if (vp->objects_last_page == vp->objects_per_page)
1813 add_varray_page (vp);
1814
1815 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1816 aux_ptr->type = aux_isym;
1817 aux_ptr->data.isym = aux_word;
1818
1819 return vp->num_allocated++;
1820 }
1821
1822 /* Add an auxiliary symbol (passing a file/symbol index combo). */
1823
1824 static symint_t
1825 add_aux_sym_rndx (file_index, sym_index)
1826 int file_index;
1827 symint_t sym_index;
1828 {
1829 register varray_t *vp;
1830 register aux_t *aux_ptr;
1831
1832 if (cur_file_ptr == (efdr_t *) NULL)
1833 as_fatal (_("no current file pointer"));
1834
1835 vp = &cur_file_ptr->aux_syms;
1836
1837 if (vp->objects_last_page == vp->objects_per_page)
1838 add_varray_page (vp);
1839
1840 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1841 aux_ptr->type = aux_rndx;
1842 aux_ptr->data.rndx.rfd = file_index;
1843 aux_ptr->data.rndx.index = sym_index;
1844
1845 return vp->num_allocated++;
1846 }
1847 \f
1848 /* Add an auxiliary symbol (passing the basic type and possibly
1849 type qualifiers). */
1850
1851 static symint_t
1852 add_aux_sym_tir (t, state, hash_tbl)
1853 type_info_t *t; /* current type information */
1854 hash_state_t state; /* whether to hash type or not */
1855 thash_t **hash_tbl; /* pointer to hash table to use */
1856 {
1857 register varray_t *vp;
1858 register aux_t *aux_ptr;
1859 static AUXU init_aux;
1860 symint_t ret;
1861 int i;
1862 AUXU aux;
1863
1864 if (cur_file_ptr == (efdr_t *) NULL)
1865 as_fatal (_("no current file pointer"));
1866
1867 vp = &cur_file_ptr->aux_syms;
1868
1869 aux = init_aux;
1870 aux.ti.bt = (int) t->basic_type;
1871 aux.ti.continued = 0;
1872 aux.ti.fBitfield = t->bitfield;
1873
1874 aux.ti.tq0 = (int) t->type_qualifiers[0];
1875 aux.ti.tq1 = (int) t->type_qualifiers[1];
1876 aux.ti.tq2 = (int) t->type_qualifiers[2];
1877 aux.ti.tq3 = (int) t->type_qualifiers[3];
1878 aux.ti.tq4 = (int) t->type_qualifiers[4];
1879 aux.ti.tq5 = (int) t->type_qualifiers[5];
1880
1881 /* For anything that adds additional information, we must not hash,
1882 so check here, and reset our state. */
1883
1884 if (state != hash_no
1885 && (t->type_qualifiers[0] == tq_Array
1886 || t->type_qualifiers[1] == tq_Array
1887 || t->type_qualifiers[2] == tq_Array
1888 || t->type_qualifiers[3] == tq_Array
1889 || t->type_qualifiers[4] == tq_Array
1890 || t->type_qualifiers[5] == tq_Array
1891 || t->basic_type == bt_Struct
1892 || t->basic_type == bt_Union
1893 || t->basic_type == bt_Enum
1894 || t->bitfield
1895 || t->num_dims > 0))
1896 state = hash_no;
1897
1898 /* See if we can hash this type, and save some space, but some types
1899 can't be hashed (because they contain arrays or continuations),
1900 and others can be put into the hash list, but cannot use existing
1901 types because other aux entries precede this one. */
1902
1903 if (state != hash_no)
1904 {
1905 register thash_t *hash_ptr;
1906 register symint_t hi;
1907
1908 hi = aux.isym & ((1 << HASHBITS) - 1);
1909 hi %= THASH_SIZE;
1910
1911 for (hash_ptr = hash_tbl[hi];
1912 hash_ptr != (thash_t *)0;
1913 hash_ptr = hash_ptr->next)
1914 {
1915 if (aux.isym == hash_ptr->type.isym)
1916 break;
1917 }
1918
1919 if (hash_ptr != (thash_t *) NULL && state == hash_yes)
1920 return hash_ptr->indx;
1921
1922 if (hash_ptr == (thash_t *) NULL)
1923 {
1924 hash_ptr = allocate_thash ();
1925 hash_ptr->next = hash_tbl[hi];
1926 hash_ptr->type = aux;
1927 hash_ptr->indx = vp->num_allocated;
1928 hash_tbl[hi] = hash_ptr;
1929 }
1930 }
1931
1932 /* Everything is set up, add the aux symbol. */
1933 if (vp->objects_last_page == vp->objects_per_page)
1934 add_varray_page (vp);
1935
1936 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1937 aux_ptr->type = aux_tir;
1938 aux_ptr->data = aux;
1939
1940 ret = vp->num_allocated++;
1941
1942 /* Add bitfield length if it exists.
1943
1944 NOTE: Mips documentation claims bitfield goes at the end of the
1945 AUX record, but the DECstation compiler emits it here.
1946 (This would only make a difference for enum bitfields.)
1947
1948 Also note: We use the last size given since gcc may emit 2
1949 for an enum bitfield. */
1950
1951 if (t->bitfield)
1952 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]);
1953
1954 /* Add tag information if needed. Structure, union, and enum
1955 references add 2 aux symbols: a [file index, symbol index]
1956 pointer to the structure type, and the current file index. */
1957
1958 if (t->basic_type == bt_Struct
1959 || t->basic_type == bt_Union
1960 || t->basic_type == bt_Enum)
1961 {
1962 register symint_t file_index = t->tag_ptr->ifd;
1963 register localsym_t *sym = t->tag_ptr->sym;
1964 register forward_t *forward_ref = allocate_forward ();
1965
1966 if (sym != (localsym_t *) NULL)
1967 {
1968 forward_ref->next = sym->forward_ref;
1969 sym->forward_ref = forward_ref;
1970 }
1971 else
1972 {
1973 forward_ref->next = t->tag_ptr->forward_ref;
1974 t->tag_ptr->forward_ref = forward_ref;
1975 }
1976
1977 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil);
1978 forward_ref->index_ptr
1979 = &vp->last->datum->aux[vp->objects_last_page - 1];
1980
1981 (void) add_aux_sym_symint (file_index);
1982 forward_ref->ifd_ptr
1983 = &vp->last->datum->aux[vp->objects_last_page - 1];
1984 }
1985
1986 /* Add information about array bounds if they exist. */
1987 for (i = 0; i < t->num_dims; i++)
1988 {
1989 (void) add_aux_sym_rndx (ST_RFDESCAPE,
1990 cur_file_ptr->int_type);
1991
1992 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/
1993 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */
1994 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/
1995 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */
1996 ? 0
1997 : (t->sizes[i] * 8) / t->dimensions[i]);
1998 };
1999
2000 /* NOTE: Mips documentation claims that the bitfield width goes here.
2001 But it needs to be emitted earlier. */
2002
2003 return ret;
2004 }
2005 \f
2006 /* Add a tag to the tag table (unless it already exists). */
2007
2008 static tag_t *
2009 get_tag (tag, sym, basic_type)
2010 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 = xmalloc ((unsigned long) (strlen (tag) + 1));
2041 strcpy (perm, tag);
2042 hash_ptr = allocate_shash ();
2043 err = hash_insert (tag_hash, perm, (char *) hash_ptr);
2044 if (err)
2045 as_fatal (_("Inserting \"%s\" into tag hash table: %s"),
2046 tag, err);
2047 hash_ptr->string = perm;
2048 }
2049
2050 tag_ptr = allocate_tag ();
2051 tag_ptr->forward_ref = (forward_t *) NULL;
2052 tag_ptr->hash_ptr = hash_ptr;
2053 tag_ptr->same_name = hash_ptr->tag_ptr;
2054 tag_ptr->basic_type = basic_type;
2055 tag_ptr->sym = sym;
2056 tag_ptr->ifd = ((sym == (localsym_t *) NULL)
2057 ? (symint_t) -1
2058 : cur_file_ptr->file_index);
2059 tag_ptr->same_block = cur_tag_head->first_tag;
2060
2061 cur_tag_head->first_tag = tag_ptr;
2062 hash_ptr->tag_ptr = tag_ptr;
2063
2064 return tag_ptr;
2065 }
2066 \f
2067 /* Add an unknown {struct, union, enum} tag. */
2068
2069 static void
2070 add_unknown_tag (ptag)
2071 tag_t *ptag; /* pointer to tag information */
2072 {
2073 shash_t *hash_ptr = ptag->hash_ptr;
2074 char *name = hash_ptr->string;
2075 localsym_t *sym;
2076 forward_t **pf;
2077
2078 #ifdef ECOFF_DEBUG
2079 if (debug > 1)
2080 {
2081 char *agg_type = "{unknown aggregate type}";
2082 switch (ptag->basic_type)
2083 {
2084 case bt_Struct: agg_type = "struct"; break;
2085 case bt_Union: agg_type = "union"; break;
2086 case bt_Enum: agg_type = "enum"; break;
2087 default: break;
2088 }
2089
2090 fprintf (stderr, "unknown %s %.*s found\n", agg_type,
2091 hash_ptr->len, name_start);
2092 }
2093 #endif
2094
2095 sym = add_ecoff_symbol (name,
2096 st_Block,
2097 sc_Info,
2098 (symbolS *) NULL,
2099 (bfd_vma) 0,
2100 (symint_t) 0,
2101 (symint_t) 0);
2102
2103 (void) add_ecoff_symbol (name,
2104 st_End,
2105 sc_Info,
2106 (symbolS *) NULL,
2107 (bfd_vma) 0,
2108 (symint_t) 0,
2109 (symint_t) 0);
2110
2111 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next)
2112 ;
2113 *pf = ptag->forward_ref;
2114 }
2115 \f
2116 /* Add a procedure to the current file's list of procedures, and record
2117 this is the current procedure. */
2118
2119 static void
2120 add_procedure (func)
2121 char *func; /* func name */
2122 {
2123 register varray_t *vp;
2124 register proc_t *new_proc_ptr;
2125 symbolS *sym;
2126
2127 #ifdef ECOFF_DEBUG
2128 if (debug)
2129 fputc ('\n', stderr);
2130 #endif
2131
2132 if (cur_file_ptr == (efdr_t *) NULL)
2133 as_fatal (_("no current file pointer"));
2134
2135 vp = &cur_file_ptr->procs;
2136
2137 if (vp->objects_last_page == vp->objects_per_page)
2138 add_varray_page (vp);
2139
2140 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++];
2141
2142 if (first_proc_ptr == (proc_t *) NULL)
2143 first_proc_ptr = new_proc_ptr;
2144
2145 vp->num_allocated++;
2146
2147 new_proc_ptr->pdr.isym = -1;
2148 new_proc_ptr->pdr.iline = -1;
2149 new_proc_ptr->pdr.lnLow = -1;
2150 new_proc_ptr->pdr.lnHigh = -1;
2151
2152 /* Set the BSF_FUNCTION flag for the symbol. */
2153 sym = symbol_find_or_make (func);
2154 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION;
2155
2156 /* Push the start of the function. */
2157 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text,
2158 sym, (bfd_vma) 0, (symint_t) 0,
2159 (symint_t) 0);
2160
2161 ++proc_cnt;
2162
2163 /* Fill in the linenos preceding the .ent, if any. */
2164 if (noproc_lineno != (lineno_list_t *) NULL)
2165 {
2166 lineno_list_t *l;
2167
2168 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next)
2169 l->proc = new_proc_ptr;
2170 *last_lineno_ptr = noproc_lineno;
2171 while (*last_lineno_ptr != NULL)
2172 {
2173 last_lineno = *last_lineno_ptr;
2174 last_lineno_ptr = &last_lineno->next;
2175 }
2176 noproc_lineno = (lineno_list_t *) NULL;
2177 }
2178 }
2179
2180 symbolS *
2181 ecoff_get_cur_proc_sym ()
2182 {
2183 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL);
2184 }
2185 \f
2186 /* Add a new filename, and set up all of the file relative
2187 virtual arrays (strings, symbols, aux syms, etc.). Record
2188 where the current file structure lives. */
2189
2190 static void
2191 add_file (file_name, indx, fake)
2192 const char *file_name; /* file name */
2193 int indx ATTRIBUTE_UNUSED;
2194 int fake;
2195 {
2196 register int first_ch;
2197 register efdr_t *fil_ptr;
2198
2199 #ifdef ECOFF_DEBUG
2200 if (debug)
2201 fprintf (stderr, "\tfile\t%.*s\n", len, file_start);
2202 #endif
2203
2204 /* If the file name is NULL, then no .file symbol appeared, and we
2205 want to use the actual file name. */
2206 if (file_name == (const char *) NULL)
2207 {
2208 char *file;
2209
2210 if (first_file != (efdr_t *) NULL)
2211 as_fatal (_("fake .file after real one"));
2212 as_where (&file, (unsigned int *) NULL);
2213 file_name = (const char *) file;
2214
2215 /* Automatically generate ECOFF debugging information, since I
2216 think that's what other ECOFF assemblers do. We don't do
2217 this if we see a .file directive with a string, since that
2218 implies that some sort of debugging information is being
2219 provided. */
2220 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED)
2221 debug_type = DEBUG_ECOFF;
2222 }
2223 else
2224 debug_type = DEBUG_NONE;
2225
2226 #ifndef NO_LISTING
2227 if (listing)
2228 listing_source_file (file_name);
2229 #endif
2230
2231 current_stabs_filename = file_name;
2232
2233 /* If we're creating stabs, then we don't actually make a new FDR.
2234 Instead, we just create a stabs symbol. */
2235 if (stabs_seen)
2236 {
2237 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2238 symbol_new ("L0\001", now_seg,
2239 (valueT) frag_now_fix (),
2240 frag_now),
2241 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL));
2242 return;
2243 }
2244
2245 first_ch = *file_name;
2246
2247 /* FIXME: We can't safely merge files which have line number
2248 information (fMerge will be zero in this case). Otherwise, we
2249 get incorrect line number debugging info. See for instance
2250 ecoff_build_lineno, which will end up setting all file->fdr.*
2251 fields multiple times, resulting in incorrect debug info. In
2252 order to make this work right, all line number and symbol info
2253 for the same source file has to be adjacent in the object file,
2254 so that a single file descriptor can be used to point to them.
2255 This would require maintaining file specific lists of line
2256 numbers and symbols for each file, so that they can be merged
2257 together (or output together) when two .file pseudo-ops are
2258 merged into one file descriptor. */
2259
2260 /* See if the file has already been created. */
2261 for (fil_ptr = first_file;
2262 fil_ptr != (efdr_t *) NULL;
2263 fil_ptr = fil_ptr->next_file)
2264 {
2265 if (first_ch == fil_ptr->name[0]
2266 && strcmp (file_name, fil_ptr->name) == 0
2267 && fil_ptr->fdr.fMerge)
2268 {
2269 cur_file_ptr = fil_ptr;
2270 if (! fake)
2271 cur_file_ptr->fake = 0;
2272 break;
2273 }
2274 }
2275
2276 /* If this is a new file, create it. */
2277 if (fil_ptr == (efdr_t *) NULL)
2278 {
2279 if (file_desc.objects_last_page == file_desc.objects_per_page)
2280 add_varray_page (&file_desc);
2281
2282 fil_ptr = cur_file_ptr =
2283 &file_desc.last->datum->file[file_desc.objects_last_page++];
2284 *fil_ptr = init_file;
2285
2286 fil_ptr->file_index = current_file_idx++;
2287 ++file_desc.num_allocated;
2288
2289 fil_ptr->fake = fake;
2290
2291 /* Allocate the string hash table. */
2292 fil_ptr->str_hash = hash_new ();
2293
2294 /* Make sure 0 byte in string table is null */
2295 add_string (&fil_ptr->strings,
2296 fil_ptr->str_hash,
2297 "",
2298 (shash_t **)0);
2299
2300 if (strlen (file_name) > PAGE_USIZE - 2)
2301 as_fatal (_("Filename goes over one page boundary."));
2302
2303 /* Push the start of the filename. We assume that the filename
2304 will be stored at string offset 1. */
2305 (void) add_ecoff_symbol (file_name, st_File, sc_Text,
2306 (symbolS *) NULL, (bfd_vma) 0,
2307 (symint_t) 0, (symint_t) 0);
2308 fil_ptr->fdr.rss = 1;
2309 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1];
2310
2311 /* Update the linked list of file descriptors. */
2312 *last_file_ptr = fil_ptr;
2313 last_file_ptr = &fil_ptr->next_file;
2314
2315 /* Add void & int types to the file (void should be first to catch
2316 errant 0's within the index fields). */
2317 fil_ptr->void_type = add_aux_sym_tir (&void_type_info,
2318 hash_yes,
2319 &cur_file_ptr->thash_head[0]);
2320
2321 fil_ptr->int_type = add_aux_sym_tir (&int_type_info,
2322 hash_yes,
2323 &cur_file_ptr->thash_head[0]);
2324 }
2325 }
2326
2327 /* This function is called when the assembler notices a preprocessor
2328 directive switching to a new file. This will not happen in
2329 compiler output, only in hand coded assembler. */
2330
2331 void
2332 ecoff_new_file (name)
2333 const char *name;
2334 {
2335 if (cur_file_ptr != NULL && strcmp (cur_file_ptr->name, name) == 0)
2336 return;
2337 add_file (name, 0, 0);
2338
2339 /* This is a hand coded assembler file, so automatically turn on
2340 debugging information. */
2341 if (debug_type == DEBUG_UNSPECIFIED)
2342 debug_type = DEBUG_ECOFF;
2343 }
2344 \f
2345 #ifdef ECOFF_DEBUG
2346
2347 /* Convert storage class to string. */
2348
2349 static char *
2350 sc_to_string (storage_class)
2351 sc_t storage_class;
2352 {
2353 switch (storage_class)
2354 {
2355 case sc_Nil: return "Nil,";
2356 case sc_Text: return "Text,";
2357 case sc_Data: return "Data,";
2358 case sc_Bss: return "Bss,";
2359 case sc_Register: return "Register,";
2360 case sc_Abs: return "Abs,";
2361 case sc_Undefined: return "Undefined,";
2362 case sc_CdbLocal: return "CdbLocal,";
2363 case sc_Bits: return "Bits,";
2364 case sc_CdbSystem: return "CdbSystem,";
2365 case sc_RegImage: return "RegImage,";
2366 case sc_Info: return "Info,";
2367 case sc_UserStruct: return "UserStruct,";
2368 case sc_SData: return "SData,";
2369 case sc_SBss: return "SBss,";
2370 case sc_RData: return "RData,";
2371 case sc_Var: return "Var,";
2372 case sc_Common: return "Common,";
2373 case sc_SCommon: return "SCommon,";
2374 case sc_VarRegister: return "VarRegister,";
2375 case sc_Variant: return "Variant,";
2376 case sc_SUndefined: return "SUndefined,";
2377 case sc_Init: return "Init,";
2378 case sc_Max: return "Max,";
2379 }
2380
2381 return "???,";
2382 }
2383
2384 #endif /* DEBUG */
2385 \f
2386 #ifdef ECOFF_DEBUG
2387
2388 /* Convert symbol type to string. */
2389
2390 static char *
2391 st_to_string (symbol_type)
2392 st_t symbol_type;
2393 {
2394 switch (symbol_type)
2395 {
2396 case st_Nil: return "Nil,";
2397 case st_Global: return "Global,";
2398 case st_Static: return "Static,";
2399 case st_Param: return "Param,";
2400 case st_Local: return "Local,";
2401 case st_Label: return "Label,";
2402 case st_Proc: return "Proc,";
2403 case st_Block: return "Block,";
2404 case st_End: return "End,";
2405 case st_Member: return "Member,";
2406 case st_Typedef: return "Typedef,";
2407 case st_File: return "File,";
2408 case st_RegReloc: return "RegReloc,";
2409 case st_Forward: return "Forward,";
2410 case st_StaticProc: return "StaticProc,";
2411 case st_Constant: return "Constant,";
2412 case st_Str: return "String,";
2413 case st_Number: return "Number,";
2414 case st_Expr: return "Expr,";
2415 case st_Type: return "Type,";
2416 case st_Max: return "Max,";
2417 }
2418
2419 return "???,";
2420 }
2421
2422 #endif /* DEBUG */
2423 \f
2424 /* Parse .begin directives which have a label as the first argument
2425 which gives the location of the start of the block. */
2426
2427 void
2428 ecoff_directive_begin (ignore)
2429 int ignore ATTRIBUTE_UNUSED;
2430 {
2431 char *name;
2432 char name_end;
2433
2434 if (cur_file_ptr == (efdr_t *) NULL)
2435 {
2436 as_warn (_(".begin directive without a preceding .file directive"));
2437 demand_empty_rest_of_line ();
2438 return;
2439 }
2440
2441 if (cur_proc_ptr == (proc_t *) NULL)
2442 {
2443 as_warn (_(".begin directive without a preceding .ent directive"));
2444 demand_empty_rest_of_line ();
2445 return;
2446 }
2447
2448 name = input_line_pointer;
2449 name_end = get_symbol_end ();
2450
2451 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text,
2452 symbol_find_or_make (name),
2453 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2454
2455 *input_line_pointer = name_end;
2456
2457 /* The line number follows, but we don't use it. */
2458 (void) get_absolute_expression ();
2459 demand_empty_rest_of_line ();
2460 }
2461 \f
2462 /* Parse .bend directives which have a label as the first argument
2463 which gives the location of the end of the block. */
2464
2465 void
2466 ecoff_directive_bend (ignore)
2467 int ignore ATTRIBUTE_UNUSED;
2468 {
2469 char *name;
2470 char name_end;
2471 symbolS *endsym;
2472
2473 if (cur_file_ptr == (efdr_t *) NULL)
2474 {
2475 as_warn (_(".bend directive without a preceding .file directive"));
2476 demand_empty_rest_of_line ();
2477 return;
2478 }
2479
2480 if (cur_proc_ptr == (proc_t *) NULL)
2481 {
2482 as_warn (_(".bend directive without a preceding .ent directive"));
2483 demand_empty_rest_of_line ();
2484 return;
2485 }
2486
2487 name = input_line_pointer;
2488 name_end = get_symbol_end ();
2489
2490 /* The value is the distance between the .bend directive and the
2491 corresponding symbol. We fill in the offset when we write out
2492 the symbol. */
2493 endsym = symbol_find (name);
2494 if (endsym == (symbolS *) NULL)
2495 as_warn (_(".bend directive names unknown symbol"));
2496 else
2497 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym,
2498 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2499
2500 *input_line_pointer = name_end;
2501
2502 /* The line number follows, but we don't use it. */
2503 (void) get_absolute_expression ();
2504 demand_empty_rest_of_line ();
2505 }
2506 \f
2507 /* COFF debugging information is provided as a series of directives
2508 (.def, .scl, etc.). We build up information as we read the
2509 directives in the following static variables, and file it away when
2510 we reach the .endef directive. */
2511 static char *coff_sym_name;
2512 static type_info_t coff_type;
2513 static sc_t coff_storage_class;
2514 static st_t coff_symbol_typ;
2515 static int coff_is_function;
2516 static char *coff_tag;
2517 static valueT coff_value;
2518 static symbolS *coff_sym_value;
2519 static bfd_vma coff_sym_addend;
2520 static int coff_inside_enumeration;
2521
2522 /* Handle a .def directive: start defining a symbol. */
2523
2524 void
2525 ecoff_directive_def (ignore)
2526 int ignore ATTRIBUTE_UNUSED;
2527 {
2528 char *name;
2529 char name_end;
2530
2531 ecoff_debugging_seen = 1;
2532
2533 SKIP_WHITESPACE ();
2534
2535 name = input_line_pointer;
2536 name_end = get_symbol_end ();
2537
2538 if (coff_sym_name != (char *) NULL)
2539 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored"));
2540 else if (*name == '\0')
2541 as_warn (_("Empty symbol name in .def; ignored"));
2542 else
2543 {
2544 if (coff_sym_name != (char *) NULL)
2545 free (coff_sym_name);
2546 if (coff_tag != (char *) NULL)
2547 free (coff_tag);
2548 coff_sym_name = (char *) xmalloc ((unsigned long) (strlen (name) + 1));
2549 strcpy (coff_sym_name, name);
2550 coff_type = type_info_init;
2551 coff_storage_class = sc_Nil;
2552 coff_symbol_typ = st_Nil;
2553 coff_is_function = 0;
2554 coff_tag = (char *) NULL;
2555 coff_value = 0;
2556 coff_sym_value = (symbolS *) NULL;
2557 coff_sym_addend = 0;
2558 }
2559
2560 *input_line_pointer = name_end;
2561
2562 demand_empty_rest_of_line ();
2563 }
2564
2565 /* Handle a .dim directive, used to give dimensions for an array. The
2566 arguments are comma separated numbers. mips-tfile assumes that
2567 there will not be more than 6 dimensions, and gdb won't read any
2568 more than that anyhow, so I will also make that assumption. */
2569
2570 void
2571 ecoff_directive_dim (ignore)
2572 int ignore ATTRIBUTE_UNUSED;
2573 {
2574 int dimens[N_TQ];
2575 int i;
2576
2577 if (coff_sym_name == (char *) NULL)
2578 {
2579 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored"));
2580 demand_empty_rest_of_line ();
2581 return;
2582 }
2583
2584 for (i = 0; i < N_TQ; i++)
2585 {
2586 SKIP_WHITESPACE ();
2587 dimens[i] = get_absolute_expression ();
2588 if (*input_line_pointer == ',')
2589 ++input_line_pointer;
2590 else
2591 {
2592 if (*input_line_pointer != '\n'
2593 && *input_line_pointer != ';')
2594 as_warn (_("Badly formed .dim directive"));
2595 break;
2596 }
2597 }
2598
2599 if (i == N_TQ)
2600 --i;
2601
2602 /* The dimensions are stored away in reverse order. */
2603 for (; i >= 0; i--)
2604 {
2605 if (coff_type.num_dims >= N_TQ)
2606 {
2607 as_warn (_("Too many .dim entries"));
2608 break;
2609 }
2610 coff_type.dimensions[coff_type.num_dims] = dimens[i];
2611 ++coff_type.num_dims;
2612 }
2613
2614 demand_empty_rest_of_line ();
2615 }
2616
2617 /* Handle a .scl directive, which sets the COFF storage class of the
2618 symbol. */
2619
2620 void
2621 ecoff_directive_scl (ignore)
2622 int ignore ATTRIBUTE_UNUSED;
2623 {
2624 long val;
2625
2626 if (coff_sym_name == (char *) NULL)
2627 {
2628 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored"));
2629 demand_empty_rest_of_line ();
2630 return;
2631 }
2632
2633 val = get_absolute_expression ();
2634
2635 coff_symbol_typ = map_coff_sym_type[val];
2636 coff_storage_class = map_coff_storage[val];
2637
2638 demand_empty_rest_of_line ();
2639 }
2640
2641 /* Handle a .size directive. For some reason mips-tfile.c thinks that
2642 .size can have multiple arguments. We humor it, although gcc will
2643 never generate more than one argument. */
2644
2645 void
2646 ecoff_directive_size (ignore)
2647 int ignore ATTRIBUTE_UNUSED;
2648 {
2649 int sizes[N_TQ];
2650 int i;
2651
2652 if (coff_sym_name == (char *) NULL)
2653 {
2654 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored"));
2655 demand_empty_rest_of_line ();
2656 return;
2657 }
2658
2659 for (i = 0; i < N_TQ; i++)
2660 {
2661 SKIP_WHITESPACE ();
2662 sizes[i] = get_absolute_expression ();
2663 if (*input_line_pointer == ',')
2664 ++input_line_pointer;
2665 else
2666 {
2667 if (*input_line_pointer != '\n'
2668 && *input_line_pointer != ';')
2669 as_warn (_("Badly formed .size directive"));
2670 break;
2671 }
2672 }
2673
2674 if (i == N_TQ)
2675 --i;
2676
2677 /* The sizes are stored away in reverse order. */
2678 for (; i >= 0; i--)
2679 {
2680 if (coff_type.num_sizes >= N_TQ)
2681 {
2682 as_warn (_("Too many .size entries"));
2683 break;
2684 }
2685 coff_type.sizes[coff_type.num_sizes] = sizes[i];
2686 ++coff_type.num_sizes;
2687 }
2688
2689 demand_empty_rest_of_line ();
2690 }
2691
2692 /* Handle the .type directive, which gives the COFF type of the
2693 symbol. */
2694
2695 void
2696 ecoff_directive_type (ignore)
2697 int ignore ATTRIBUTE_UNUSED;
2698 {
2699 long val;
2700 tq_t *tq_ptr;
2701 tq_t *tq_shft;
2702
2703 if (coff_sym_name == (char *) NULL)
2704 {
2705 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored"));
2706 demand_empty_rest_of_line ();
2707 return;
2708 }
2709
2710 val = get_absolute_expression ();
2711
2712 coff_type.orig_type = BTYPE (val);
2713 coff_type.basic_type = map_coff_types[coff_type.orig_type];
2714
2715 tq_ptr = &coff_type.type_qualifiers[N_TQ];
2716 while (val & ~N_BTMASK)
2717 {
2718 if (tq_ptr == &coff_type.type_qualifiers[0])
2719 {
2720 /* FIXME: We could handle this by setting the continued bit.
2721 There would still be a limit: the .type argument can not
2722 be infinite. */
2723 as_warn (_("The type of %s is too complex; it will be simplified"),
2724 coff_sym_name);
2725 break;
2726 }
2727 if (ISPTR (val))
2728 *--tq_ptr = tq_Ptr;
2729 else if (ISFCN (val))
2730 *--tq_ptr = tq_Proc;
2731 else if (ISARY (val))
2732 *--tq_ptr = tq_Array;
2733 else
2734 as_fatal (_("Unrecognized .type argument"));
2735
2736 val = DECREF (val);
2737 }
2738
2739 tq_shft = &coff_type.type_qualifiers[0];
2740 while (tq_ptr != &coff_type.type_qualifiers[N_TQ])
2741 *tq_shft++ = *tq_ptr++;
2742
2743 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc)
2744 {
2745 /* If this is a function, ignore it, so that we don't get two
2746 entries (one from the .ent, and one for the .def that
2747 precedes it). Save the type information so that the end
2748 block can properly add it after the begin block index. For
2749 MIPS knows what reason, we must strip off the function type
2750 at this point. */
2751 coff_is_function = 1;
2752 tq_shft[-1] = tq_Nil;
2753 }
2754
2755 while (tq_shft != &coff_type.type_qualifiers[N_TQ])
2756 *tq_shft++ = tq_Nil;
2757
2758 demand_empty_rest_of_line ();
2759 }
2760
2761 /* Handle the .tag directive, which gives the name of a structure,
2762 union or enum. */
2763
2764 void
2765 ecoff_directive_tag (ignore)
2766 int ignore ATTRIBUTE_UNUSED;
2767 {
2768 char *name;
2769 char name_end;
2770
2771 if (coff_sym_name == (char *) NULL)
2772 {
2773 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored"));
2774 demand_empty_rest_of_line ();
2775 return;
2776 }
2777
2778 name = input_line_pointer;
2779 name_end = get_symbol_end ();
2780
2781 coff_tag = (char *) xmalloc ((unsigned long) (strlen (name) + 1));
2782 strcpy (coff_tag, name);
2783
2784 *input_line_pointer = name_end;
2785
2786 demand_empty_rest_of_line ();
2787 }
2788
2789 /* Handle the .val directive, which gives the value of the symbol. It
2790 may be the name of a static or global symbol. */
2791
2792 void
2793 ecoff_directive_val (ignore)
2794 int ignore ATTRIBUTE_UNUSED;
2795 {
2796 expressionS exp;
2797
2798 if (coff_sym_name == (char *) NULL)
2799 {
2800 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored"));
2801 demand_empty_rest_of_line ();
2802 return;
2803 }
2804
2805 expression (&exp);
2806 if (exp.X_op != O_constant && exp.X_op != O_symbol)
2807 {
2808 as_bad (_(".val expression is too copmlex"));
2809 demand_empty_rest_of_line ();
2810 return;
2811 }
2812
2813 if (exp.X_op == O_constant)
2814 coff_value = exp.X_add_number;
2815 else
2816 {
2817 coff_sym_value = exp.X_add_symbol;
2818 coff_sym_addend = exp.X_add_number;
2819 }
2820
2821 demand_empty_rest_of_line ();
2822 }
2823
2824 /* Handle the .endef directive, which terminates processing of COFF
2825 debugging information for a symbol. */
2826
2827 void
2828 ecoff_directive_endef (ignore)
2829 int ignore ATTRIBUTE_UNUSED;
2830 {
2831 char *name;
2832 symint_t indx;
2833 localsym_t *sym;
2834
2835 demand_empty_rest_of_line ();
2836
2837 if (coff_sym_name == (char *) NULL)
2838 {
2839 as_warn (_(".endef pseudo-op used before .def; ignored"));
2840 return;
2841 }
2842
2843 name = coff_sym_name;
2844 coff_sym_name = (char *) NULL;
2845
2846 /* If the symbol is a static or external, we have already gotten the
2847 appropriate type and class, so make sure we don't override those
2848 values. This is needed because there are some type and classes
2849 that are not in COFF, such as short data, etc. */
2850 if (coff_sym_value != (symbolS *) NULL)
2851 {
2852 coff_symbol_typ = st_Nil;
2853 coff_storage_class = sc_Nil;
2854 }
2855
2856 coff_type.extra_sizes = coff_tag != (char *) NULL;
2857 if (coff_type.num_dims > 0)
2858 {
2859 int diff = coff_type.num_dims - coff_type.num_sizes;
2860 int i = coff_type.num_dims - 1;
2861 int j;
2862
2863 if (coff_type.num_sizes != 1 || diff < 0)
2864 {
2865 as_warn (_("Bad COFF debugging info"));
2866 return;
2867 }
2868
2869 /* If this is an array, make sure the same number of dimensions
2870 and sizes were passed, creating extra sizes for multiply
2871 dimensioned arrays if not passed. */
2872 coff_type.extra_sizes = 0;
2873 if (diff)
2874 {
2875 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1;
2876 while (j >= 0)
2877 {
2878 coff_type.sizes[j] = (((j - diff) >= 0)
2879 ? coff_type.sizes[j - diff]
2880 : 0);
2881 j--;
2882 }
2883
2884 coff_type.num_sizes = i + 1;
2885 for (i--; i >= 0; i--)
2886 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0
2887 ? 0
2888 : (coff_type.sizes[i + 1]
2889 / coff_type.dimensions[i + 1]));
2890 }
2891 }
2892 else if (coff_symbol_typ == st_Member
2893 && coff_type.num_sizes - coff_type.extra_sizes == 1)
2894 {
2895 /* Is this a bitfield? This is indicated by a structure memeber
2896 having a size field that isn't an array. */
2897 coff_type.bitfield = 1;
2898 }
2899
2900 /* Except for enumeration members & begin/ending of scopes, put the
2901 type word in the aux. symbol table. */
2902 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End)
2903 indx = 0;
2904 else if (coff_inside_enumeration)
2905 indx = cur_file_ptr->void_type;
2906 else
2907 {
2908 if (coff_type.basic_type == bt_Struct
2909 || coff_type.basic_type == bt_Union
2910 || coff_type.basic_type == bt_Enum)
2911 {
2912 if (coff_tag == (char *) NULL)
2913 {
2914 as_warn (_("No tag specified for %s"), name);
2915 return;
2916 }
2917
2918 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL,
2919 coff_type.basic_type);
2920 }
2921
2922 if (coff_is_function)
2923 {
2924 last_func_type_info = coff_type;
2925 last_func_sym_value = coff_sym_value;
2926 return;
2927 }
2928
2929 indx = add_aux_sym_tir (&coff_type,
2930 hash_yes,
2931 &cur_file_ptr->thash_head[0]);
2932 }
2933
2934 /* Do any last minute adjustments that are necessary. */
2935 switch (coff_symbol_typ)
2936 {
2937 default:
2938 break;
2939
2940 /* For the beginning of structs, unions, and enumerations, the
2941 size info needs to be passed in the value field. */
2942 case st_Block:
2943 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes
2944 != 1)
2945 {
2946 as_warn (_("Bad COFF debugging information"));
2947 return;
2948 }
2949 else
2950 coff_value = coff_type.sizes[0];
2951
2952 coff_inside_enumeration = (coff_type.orig_type == T_ENUM);
2953 break;
2954
2955 /* For the end of structs, unions, and enumerations, omit the
2956 name which is always ".eos". This needs to be done last, so
2957 that any error reporting above gives the correct name. */
2958 case st_End:
2959 free (name);
2960 name = (char *) NULL;
2961 coff_value = 0;
2962 coff_inside_enumeration = 0;
2963 break;
2964
2965 /* Members of structures and unions that aren't bitfields, need
2966 to adjust the value from a byte offset to a bit offset.
2967 Members of enumerations do not have the value adjusted, and
2968 can be distinguished by indx == indexNil. For enumerations,
2969 update the maximum enumeration value. */
2970 case st_Member:
2971 if (! coff_type.bitfield && ! coff_inside_enumeration)
2972 coff_value *= 8;
2973
2974 break;
2975 }
2976
2977 /* Add the symbol. */
2978 sym = add_ecoff_symbol (name,
2979 coff_symbol_typ,
2980 coff_storage_class,
2981 coff_sym_value,
2982 coff_sym_addend,
2983 (symint_t) coff_value,
2984 indx);
2985
2986 /* deal with struct, union, and enum tags. */
2987 if (coff_symbol_typ == st_Block)
2988 {
2989 /* Create or update the tag information. */
2990 tag_t *tag_ptr = get_tag (name,
2991 sym,
2992 coff_type.basic_type);
2993 forward_t **pf;
2994
2995 /* Remember any forward references. */
2996 for (pf = &sym->forward_ref;
2997 *pf != (forward_t *) NULL;
2998 pf = &(*pf)->next)
2999 ;
3000 *pf = tag_ptr->forward_ref;
3001 tag_ptr->forward_ref = (forward_t *) NULL;
3002 }
3003 }
3004 \f
3005 /* Parse .end directives. */
3006
3007 void
3008 ecoff_directive_end (ignore)
3009 int ignore ATTRIBUTE_UNUSED;
3010 {
3011 char *name;
3012 char name_end;
3013 register int ch;
3014 symbolS *ent;
3015
3016 if (cur_file_ptr == (efdr_t *) NULL)
3017 {
3018 as_warn (_(".end directive without a preceding .file directive"));
3019 demand_empty_rest_of_line ();
3020 return;
3021 }
3022
3023 if (cur_proc_ptr == (proc_t *) NULL)
3024 {
3025 as_warn (_(".end directive without a preceding .ent directive"));
3026 demand_empty_rest_of_line ();
3027 return;
3028 }
3029
3030 name = input_line_pointer;
3031 name_end = get_symbol_end ();
3032
3033 ch = *name;
3034 if (! is_name_beginner (ch))
3035 {
3036 as_warn (_(".end directive has no name"));
3037 *input_line_pointer = name_end;
3038 demand_empty_rest_of_line ();
3039 return;
3040 }
3041
3042 /* The value is the distance between the .end directive and the
3043 corresponding symbol. We create a fake symbol to hold the
3044 current location, and put in the offset when we write out the
3045 symbol. */
3046 ent = symbol_find (name);
3047 if (ent == (symbolS *) NULL)
3048 as_warn (_(".end directive names unknown symbol"));
3049 else
3050 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text,
3051 symbol_new ("L0\001", now_seg,
3052 (valueT) frag_now_fix (),
3053 frag_now),
3054 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
3055
3056 cur_proc_ptr = (proc_t *) NULL;
3057
3058 *input_line_pointer = name_end;
3059 demand_empty_rest_of_line ();
3060 }
3061 \f
3062 /* Parse .ent directives. */
3063
3064 void
3065 ecoff_directive_ent (ignore)
3066 int ignore ATTRIBUTE_UNUSED;
3067 {
3068 char *name;
3069 char name_end;
3070 register int ch;
3071
3072 if (cur_file_ptr == (efdr_t *) NULL)
3073 add_file ((const char *) NULL, 0, 1);
3074
3075 if (cur_proc_ptr != (proc_t *) NULL)
3076 {
3077 as_warn (_("second .ent directive found before .end directive"));
3078 demand_empty_rest_of_line ();
3079 return;
3080 }
3081
3082 name = input_line_pointer;
3083 name_end = get_symbol_end ();
3084
3085 ch = *name;
3086 if (! is_name_beginner (ch))
3087 {
3088 as_warn (_(".ent directive has no name"));
3089 *input_line_pointer = name_end;
3090 demand_empty_rest_of_line ();
3091 return;
3092 }
3093
3094 add_procedure (name);
3095
3096 *input_line_pointer = name_end;
3097
3098 /* The .ent directive is sometimes followed by a number. I'm not
3099 really sure what the number means. I don't see any way to store
3100 the information in the PDR. The Irix 4 assembler seems to ignore
3101 the information. */
3102 SKIP_WHITESPACE ();
3103 if (*input_line_pointer == ',')
3104 {
3105 ++input_line_pointer;
3106 SKIP_WHITESPACE ();
3107 }
3108 if (isdigit ((unsigned char) *input_line_pointer)
3109 || *input_line_pointer == '-')
3110 (void) get_absolute_expression ();
3111
3112 demand_empty_rest_of_line ();
3113 }
3114 \f
3115 /* Parse .extern directives. */
3116
3117 void
3118 ecoff_directive_extern (ignore)
3119 int ignore ATTRIBUTE_UNUSED;
3120 {
3121 char *name;
3122 int c;
3123 symbolS *symbolp;
3124 valueT size;
3125
3126 name = input_line_pointer;
3127 c = get_symbol_end ();
3128 symbolp = symbol_find_or_make (name);
3129 *input_line_pointer = c;
3130
3131 S_SET_EXTERNAL (symbolp);
3132
3133 if (*input_line_pointer == ',')
3134 ++input_line_pointer;
3135 size = get_absolute_expression ();
3136
3137 symbol_get_obj (symbolp)->ecoff_extern_size = size;
3138 }
3139 \f
3140 /* Parse .file directives. */
3141
3142 void
3143 ecoff_directive_file (ignore)
3144 int ignore ATTRIBUTE_UNUSED;
3145 {
3146 int indx;
3147 char *name;
3148 int len;
3149
3150 if (cur_proc_ptr != (proc_t *) NULL)
3151 {
3152 as_warn (_("No way to handle .file within .ent/.end section"));
3153 demand_empty_rest_of_line ();
3154 return;
3155 }
3156
3157 indx = (int) get_absolute_expression ();
3158
3159 /* FIXME: we don't have to save the name here. */
3160 name = demand_copy_C_string (&len);
3161
3162 add_file (name, indx - 1, 0);
3163
3164 demand_empty_rest_of_line ();
3165 }
3166 \f
3167 /* Parse .fmask directives. */
3168
3169 void
3170 ecoff_directive_fmask (ignore)
3171 int ignore ATTRIBUTE_UNUSED;
3172 {
3173 long val;
3174
3175 if (cur_proc_ptr == (proc_t *) NULL)
3176 {
3177 as_warn (_(".fmask outside of .ent"));
3178 demand_empty_rest_of_line ();
3179 return;
3180 }
3181
3182 if (get_absolute_expression_and_terminator (&val) != ',')
3183 {
3184 as_warn (_("Bad .fmask directive"));
3185 --input_line_pointer;
3186 demand_empty_rest_of_line ();
3187 return;
3188 }
3189
3190 cur_proc_ptr->pdr.fregmask = val;
3191 cur_proc_ptr->pdr.fregoffset = get_absolute_expression ();
3192
3193 demand_empty_rest_of_line ();
3194 }
3195 \f
3196 /* Parse .frame directives. */
3197
3198 void
3199 ecoff_directive_frame (ignore)
3200 int ignore ATTRIBUTE_UNUSED;
3201 {
3202 long val;
3203
3204 if (cur_proc_ptr == (proc_t *) NULL)
3205 {
3206 as_warn (_(".frame outside of .ent"));
3207 demand_empty_rest_of_line ();
3208 return;
3209 }
3210
3211 cur_proc_ptr->pdr.framereg = tc_get_register (1);
3212
3213 SKIP_WHITESPACE ();
3214 if (*input_line_pointer++ != ','
3215 || get_absolute_expression_and_terminator (&val) != ',')
3216 {
3217 as_warn (_("Bad .frame directive"));
3218 --input_line_pointer;
3219 demand_empty_rest_of_line ();
3220 return;
3221 }
3222
3223 cur_proc_ptr->pdr.frameoffset = val;
3224
3225 cur_proc_ptr->pdr.pcreg = tc_get_register (0);
3226
3227 #if 0
3228 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to
3229 Sandro. I don't yet know where this value should be stored, if
3230 anywhere. */
3231 demand_empty_rest_of_line ();
3232 #else
3233 s_ignore (42);
3234 #endif
3235 }
3236 \f
3237 /* Parse .mask directives. */
3238
3239 void
3240 ecoff_directive_mask (ignore)
3241 int ignore ATTRIBUTE_UNUSED;
3242 {
3243 long val;
3244
3245 if (cur_proc_ptr == (proc_t *) NULL)
3246 {
3247 as_warn (_(".mask outside of .ent"));
3248 demand_empty_rest_of_line ();
3249 return;
3250 }
3251
3252 if (get_absolute_expression_and_terminator (&val) != ',')
3253 {
3254 as_warn (_("Bad .mask directive"));
3255 --input_line_pointer;
3256 demand_empty_rest_of_line ();
3257 return;
3258 }
3259
3260 cur_proc_ptr->pdr.regmask = val;
3261 cur_proc_ptr->pdr.regoffset = get_absolute_expression ();
3262
3263 demand_empty_rest_of_line ();
3264 }
3265 \f
3266 /* Parse .loc directives. */
3267
3268 void
3269 ecoff_directive_loc (ignore)
3270 int ignore ATTRIBUTE_UNUSED;
3271 {
3272 lineno_list_t *list;
3273 symint_t lineno;
3274
3275 if (cur_file_ptr == (efdr_t *) NULL)
3276 {
3277 as_warn (_(".loc before .file"));
3278 demand_empty_rest_of_line ();
3279 return;
3280 }
3281
3282 if (now_seg != text_section)
3283 {
3284 as_warn (_(".loc outside of .text"));
3285 demand_empty_rest_of_line ();
3286 return;
3287 }
3288
3289 /* Skip the file number. */
3290 SKIP_WHITESPACE ();
3291 get_absolute_expression ();
3292 SKIP_WHITESPACE ();
3293
3294 lineno = get_absolute_expression ();
3295
3296 #ifndef NO_LISTING
3297 if (listing)
3298 listing_source_line (lineno);
3299 #endif
3300
3301 /* If we're building stabs, then output a special label rather than
3302 ECOFF line number info. */
3303 if (stabs_seen)
3304 {
3305 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text,
3306 symbol_new ("L0\001", now_seg,
3307 (valueT) frag_now_fix (),
3308 frag_now),
3309 (bfd_vma) 0, 0, lineno);
3310 return;
3311 }
3312
3313 list = allocate_lineno_list ();
3314
3315 list->next = (lineno_list_t *) NULL;
3316 list->file = cur_file_ptr;
3317 list->proc = cur_proc_ptr;
3318 list->frag = frag_now;
3319 list->paddr = frag_now_fix ();
3320 list->lineno = lineno;
3321
3322 /* We don't want to merge files which have line numbers. */
3323 cur_file_ptr->fdr.fMerge = 0;
3324
3325 /* A .loc directive will sometimes appear before a .ent directive,
3326 which means that cur_proc_ptr will be NULL here. Arrange to
3327 patch this up. */
3328 if (cur_proc_ptr == (proc_t *) NULL)
3329 {
3330 lineno_list_t **pl;
3331
3332 pl = &noproc_lineno;
3333 while (*pl != (lineno_list_t *) NULL)
3334 pl = &(*pl)->next;
3335 *pl = list;
3336 }
3337 else
3338 {
3339 last_lineno = list;
3340 *last_lineno_ptr = list;
3341 last_lineno_ptr = &list->next;
3342 }
3343 }
3344
3345 /* The MIPS assembler sometimes inserts nop instructions in the
3346 instruction stream. When this happens, we must patch up the .loc
3347 information so that it points to the instruction after the nop. */
3348
3349 void
3350 ecoff_fix_loc (old_frag, old_frag_offset)
3351 fragS *old_frag;
3352 unsigned long old_frag_offset;
3353 {
3354 if (last_lineno != NULL
3355 && last_lineno->frag == old_frag
3356 && last_lineno->paddr == old_frag_offset)
3357 {
3358 last_lineno->frag = frag_now;
3359 last_lineno->paddr = frag_now_fix ();
3360 }
3361 }
3362 \f
3363 /* Make sure the @stabs symbol is emitted. */
3364
3365 static void
3366 mark_stabs (ignore)
3367 int ignore ATTRIBUTE_UNUSED;
3368 {
3369 if (! stabs_seen)
3370 {
3371 /* Add a dummy @stabs dymbol. */
3372 stabs_seen = 1;
3373 (void) add_ecoff_symbol (stabs_symbol, stNil, scInfo,
3374 (symbolS *) NULL,
3375 (bfd_vma) 0, (symint_t) -1,
3376 ECOFF_MARK_STAB (0));
3377 }
3378 }
3379 \f
3380 /* Parse .weakext directives. */
3381 #ifndef TC_MIPS
3382 /* For TC_MIPS use the version in tc-mips.c. */
3383 void
3384 ecoff_directive_weakext (ignore)
3385 int ignore;
3386 {
3387 char *name;
3388 int c;
3389 symbolS *symbolP;
3390 expressionS exp;
3391
3392 name = input_line_pointer;
3393 c = get_symbol_end ();
3394 symbolP = symbol_find_or_make (name);
3395 *input_line_pointer = c;
3396
3397 SKIP_WHITESPACE ();
3398
3399 if (*input_line_pointer == ',')
3400 {
3401 if (S_IS_DEFINED (symbolP))
3402 {
3403 as_bad (_("Ignoring attempt to redefine symbol `%s'."),
3404 S_GET_NAME (symbolP));
3405 ignore_rest_of_line ();
3406 return;
3407 }
3408
3409 ++input_line_pointer;
3410 SKIP_WHITESPACE ();
3411 if (! is_end_of_line[(unsigned char) *input_line_pointer])
3412 {
3413 expression (&exp);
3414 if (exp.X_op != O_symbol)
3415 {
3416 as_bad (_("bad .weakext directive"));
3417 ignore_rest_of_line ();
3418 return;
3419 }
3420 symbol_set_value_expression (symbolP, &exp);
3421 }
3422 }
3423
3424 S_SET_WEAK (symbolP);
3425
3426 demand_empty_rest_of_line ();
3427 }
3428 #endif /* not TC_MIPS */
3429 \f
3430 /* Handle .stabs directives. The actual parsing routine is done by a
3431 generic routine. This routine is called via OBJ_PROCESS_STAB.
3432 When this is called, input_line_pointer will be pointing at the
3433 value field of the stab.
3434
3435 .stabs directives have five fields:
3436 "string" a string, encoding the type information.
3437 code a numeric code, defined in <stab.h>
3438 0 a zero
3439 desc a zero or line number
3440 value a numeric value or an address.
3441
3442 If the value is relocatable, we transform this into:
3443 iss points as an index into string space
3444 value value from lookup of the name
3445 st st from lookup of the name
3446 sc sc from lookup of the name
3447 index code|CODE_MASK
3448
3449 If the value is not relocatable, we transform this into:
3450 iss points as an index into string space
3451 value value
3452 st st_Nil
3453 sc sc_Nil
3454 index code|CODE_MASK
3455
3456 .stabn directives have four fields (string is null):
3457 code a numeric code, defined in <stab.h>
3458 0 a zero
3459 desc a zero or a line number
3460 value a numeric value or an address. */
3461
3462 void
3463 ecoff_stab (sec, what, string, type, other, desc)
3464 segT sec ATTRIBUTE_UNUSED;
3465 int what;
3466 const char *string;
3467 int type;
3468 int other;
3469 int desc;
3470 {
3471 efdr_t *save_file_ptr = cur_file_ptr;
3472 symbolS *sym;
3473 symint_t value;
3474 bfd_vma addend;
3475 st_t st;
3476 sc_t sc;
3477 symint_t indx;
3478 localsym_t *hold = NULL;
3479
3480 ecoff_debugging_seen = 1;
3481
3482 /* We don't handle .stabd. */
3483 if (what != 's' && what != 'n')
3484 {
3485 as_bad (_(".stab%c is not supported"), what);
3486 return;
3487 }
3488
3489 /* A .stabn uses a null name, not an empty string. */
3490 if (what == 'n')
3491 string = NULL;
3492
3493 /* We ignore the other field. */
3494 if (other != 0)
3495 as_warn (_(".stab%c: ignoring non-zero other field"), what);
3496
3497 /* Make sure we have a current file. */
3498 if (cur_file_ptr == (efdr_t *) NULL)
3499 {
3500 add_file ((const char *) NULL, 0, 1);
3501 save_file_ptr = cur_file_ptr;
3502 }
3503
3504 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
3505 signal to gdb. */
3506 if (stabs_seen == 0)
3507 mark_stabs (0);
3508
3509 /* Line number stabs are handled differently, since they have two
3510 values, the line number and the address of the label. We use the
3511 index field (aka desc) to hold the line number, and the value
3512 field to hold the address. The symbol type is st_Label, which
3513 should be different from the other stabs, so that gdb can
3514 recognize it. */
3515 if (type == N_SLINE)
3516 {
3517 SYMR dummy_symr;
3518 char *name;
3519 char name_end;
3520
3521 #ifndef NO_LISTING
3522 if (listing)
3523 listing_source_line ((unsigned int) desc);
3524 #endif
3525
3526 dummy_symr.index = desc;
3527 if (dummy_symr.index != desc)
3528 {
3529 as_warn (_("Line number (%d) for .stab%c directive cannot fit in index field (20 bits)"),
3530 desc, what);
3531 return;
3532 }
3533
3534 name = input_line_pointer;
3535 name_end = get_symbol_end ();
3536
3537 sym = symbol_find_or_make (name);
3538 *input_line_pointer = name_end;
3539
3540 value = 0;
3541 addend = 0;
3542 st = st_Label;
3543 sc = sc_Text;
3544 indx = desc;
3545 }
3546 else
3547 {
3548 #ifndef NO_LISTING
3549 if (listing && (type == N_SO || type == N_SOL))
3550 listing_source_file (string);
3551 #endif
3552
3553 if (isdigit ((unsigned char) *input_line_pointer)
3554 || *input_line_pointer == '-'
3555 || *input_line_pointer == '+')
3556 {
3557 st = st_Nil;
3558 sc = sc_Nil;
3559 sym = (symbolS *) NULL;
3560 value = get_absolute_expression ();
3561 addend = 0;
3562 }
3563 else if (! is_name_beginner ((unsigned char) *input_line_pointer))
3564 {
3565 as_warn (_("Illegal .stab%c directive, bad character"), what);
3566 return;
3567 }
3568 else
3569 {
3570 expressionS exp;
3571
3572 sc = sc_Nil;
3573 st = st_Nil;
3574
3575 expression (&exp);
3576 if (exp.X_op == O_constant)
3577 {
3578 sym = NULL;
3579 value = exp.X_add_number;
3580 addend = 0;
3581 }
3582 else if (exp.X_op == O_symbol)
3583 {
3584 sym = exp.X_add_symbol;
3585 value = 0;
3586 addend = exp.X_add_number;
3587 }
3588 else
3589 {
3590 sym = make_expr_symbol (&exp);
3591 value = 0;
3592 addend = 0;
3593 }
3594 }
3595
3596 indx = ECOFF_MARK_STAB (type);
3597 }
3598
3599 /* Don't store the stabs symbol we are creating as the type of the
3600 ECOFF symbol. We want to compute the type of the ECOFF symbol
3601 independently. */
3602 if (sym != (symbolS *) NULL)
3603 hold = symbol_get_obj (sym)->ecoff_symbol;
3604
3605 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx);
3606
3607 if (sym != (symbolS *) NULL)
3608 symbol_get_obj (sym)->ecoff_symbol = hold;
3609
3610 /* Restore normal file type. */
3611 cur_file_ptr = save_file_ptr;
3612 }
3613 \f
3614 /* Frob an ECOFF symbol. Small common symbols go into a special
3615 .scommon section rather than bfd_com_section. */
3616
3617 void
3618 ecoff_frob_symbol (sym)
3619 symbolS *sym;
3620 {
3621 if (S_IS_COMMON (sym)
3622 && S_GET_VALUE (sym) > 0
3623 && S_GET_VALUE (sym) <= (unsigned) bfd_get_gp_size (stdoutput))
3624 {
3625 static asection scom_section;
3626 static asymbol scom_symbol;
3627
3628 /* We must construct a fake section similar to bfd_com_section
3629 but with the name .scommon. */
3630 if (scom_section.name == NULL)
3631 {
3632 scom_section = bfd_com_section;
3633 scom_section.name = ".scommon";
3634 scom_section.output_section = &scom_section;
3635 scom_section.symbol = &scom_symbol;
3636 scom_section.symbol_ptr_ptr = &scom_section.symbol;
3637 scom_symbol = *bfd_com_section.symbol;
3638 scom_symbol.name = ".scommon";
3639 scom_symbol.section = &scom_section;
3640 }
3641 S_SET_SEGMENT (sym, &scom_section);
3642 }
3643
3644 /* Double check weak symbols. */
3645 if (S_IS_WEAK (sym))
3646 {
3647 if (S_IS_COMMON (sym))
3648 as_bad (_("Symbol `%s' can not be both weak and common"),
3649 S_GET_NAME (sym));
3650 }
3651 }
3652 \f
3653 /* Add bytes to the symbolic information buffer. */
3654
3655 static char *
3656 ecoff_add_bytes (buf, bufend, bufptr, need)
3657 char **buf;
3658 char **bufend;
3659 char *bufptr;
3660 unsigned long need;
3661 {
3662 unsigned long at;
3663 unsigned long want;
3664
3665 at = bufptr - *buf;
3666 need -= *bufend - bufptr;
3667 if (need < PAGE_SIZE)
3668 need = PAGE_SIZE;
3669 want = (*bufend - *buf) + need;
3670 *buf = xrealloc (*buf, want);
3671 *bufend = *buf + want;
3672 return *buf + at;
3673 }
3674
3675 /* Adjust the symbolic information buffer to the alignment required
3676 for the ECOFF target debugging information. */
3677
3678 static unsigned long
3679 ecoff_padding_adjust (backend, buf, bufend, offset, bufptrptr)
3680 const struct ecoff_debug_swap *backend;
3681 char **buf;
3682 char **bufend;
3683 unsigned long offset;
3684 char **bufptrptr;
3685 {
3686 bfd_size_type align;
3687
3688 align = backend->debug_align;
3689 if ((offset & (align - 1)) != 0)
3690 {
3691 unsigned long add;
3692
3693 add = align - (offset & (align - 1));
3694 if ((unsigned long) (*bufend - (*buf + offset)) < add)
3695 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add);
3696 memset (*buf + offset, 0, add);
3697 offset += add;
3698 if (bufptrptr != (char **) NULL)
3699 *bufptrptr = *buf + offset;
3700 }
3701
3702 return offset;
3703 }
3704
3705 /* Build the line number information. */
3706
3707 static unsigned long
3708 ecoff_build_lineno (backend, buf, bufend, offset, linecntptr)
3709 const struct ecoff_debug_swap *backend;
3710 char **buf;
3711 char **bufend;
3712 unsigned long offset;
3713 long *linecntptr;
3714 {
3715 char *bufptr;
3716 register lineno_list_t *l;
3717 lineno_list_t *last;
3718 efdr_t *file;
3719 proc_t *proc;
3720 unsigned long c;
3721 long iline;
3722 long totcount;
3723 lineno_list_t first;
3724 lineno_list_t *local_first_lineno = first_lineno;
3725
3726 if (linecntptr != (long *) NULL)
3727 *linecntptr = 0;
3728
3729 bufptr = *buf + offset;
3730
3731 file = (efdr_t *) NULL;
3732 proc = (proc_t *) NULL;
3733 last = (lineno_list_t *) NULL;
3734 c = offset;
3735 iline = 0;
3736 totcount = 0;
3737
3738 /* For some reason the address of the first procedure is ignored
3739 when reading line numbers. This doesn't matter if the address of
3740 the first procedure is 0, but when gcc is generating MIPS
3741 embedded PIC code, it will put strings in the .text section
3742 before the first procedure. We cope by inserting a dummy line if
3743 the address of the first procedure is not 0. Hopefully this
3744 won't screw things up too badly.
3745
3746 Don't do this for ECOFF assembly source line numbers. They work
3747 without this extra attention. */
3748 if (debug_type != DEBUG_ECOFF
3749 && first_proc_ptr != (proc_t *) NULL
3750 && local_first_lineno != (lineno_list_t *) NULL
3751 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym)
3752 + bfd_get_section_vma (stdoutput,
3753 S_GET_SEGMENT (first_proc_ptr->sym->as_sym)))
3754 != 0))
3755 {
3756 first.file = local_first_lineno->file;
3757 first.proc = local_first_lineno->proc;
3758 first.frag = &zero_address_frag;
3759 first.paddr = 0;
3760 first.lineno = 0;
3761
3762 first.next = local_first_lineno;
3763 local_first_lineno = &first;
3764 }
3765
3766 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next)
3767 {
3768 long count;
3769 long delta;
3770
3771 /* Get the offset to the memory address of the next line number
3772 (in words). Do this first, so that we can skip ahead to the
3773 next useful line number entry. */
3774 if (l->next == (lineno_list_t *) NULL)
3775 {
3776 /* We want a count of zero, but it will be decremented
3777 before it is used. */
3778 count = 1;
3779 }
3780 else if (l->next->frag->fr_address + l->next->paddr
3781 > l->frag->fr_address + l->paddr)
3782 {
3783 count = ((l->next->frag->fr_address + l->next->paddr
3784 - (l->frag->fr_address + l->paddr))
3785 >> 2);
3786 }
3787 else
3788 {
3789 /* Don't change last, so we still get the right delta. */
3790 continue;
3791 }
3792
3793 if (l->file != file || l->proc != proc)
3794 {
3795 if (l->proc != proc && proc != (proc_t *) NULL)
3796 proc->pdr.lnHigh = last->lineno;
3797 if (l->file != file && file != (efdr_t *) NULL)
3798 {
3799 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3800 file->fdr.cline = totcount + count;
3801 if (linecntptr != (long *) NULL)
3802 *linecntptr += totcount + count;
3803 totcount = 0;
3804 }
3805
3806 if (l->file != file)
3807 {
3808 efdr_t *last_file = file;
3809
3810 file = l->file;
3811 if (last_file != (efdr_t *) NULL)
3812 file->fdr.ilineBase
3813 = last_file->fdr.ilineBase + last_file->fdr.cline;
3814 else
3815 file->fdr.ilineBase = 0;
3816 file->fdr.cbLineOffset = c;
3817 }
3818 if (l->proc != proc)
3819 {
3820 proc = l->proc;
3821 if (proc != (proc_t *) NULL)
3822 {
3823 proc->pdr.lnLow = l->lineno;
3824 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset;
3825 proc->pdr.iline = totcount;
3826 }
3827 }
3828
3829 last = (lineno_list_t *) NULL;
3830 }
3831
3832 totcount += count;
3833
3834 /* Get the offset to this line number. */
3835 if (last == (lineno_list_t *) NULL)
3836 delta = 0;
3837 else
3838 delta = l->lineno - last->lineno;
3839
3840 /* Put in the offset to this line number. */
3841 while (delta != 0)
3842 {
3843 int setcount;
3844
3845 /* 1 is added to each count read. */
3846 --count;
3847 /* We can only adjust the word count by up to 15 words at a
3848 time. */
3849 if (count <= 0x0f)
3850 {
3851 setcount = count;
3852 count = 0;
3853 }
3854 else
3855 {
3856 setcount = 0x0f;
3857 count -= 0x0f;
3858 }
3859 if (delta >= -7 && delta <= 7)
3860 {
3861 if (bufptr >= *bufend)
3862 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3863 *bufptr++ = setcount + (delta << 4);
3864 delta = 0;
3865 ++c;
3866 }
3867 else
3868 {
3869 int set;
3870
3871 if (*bufend - bufptr < 3)
3872 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3);
3873 *bufptr++ = setcount + (8 << 4);
3874 if (delta < -0x8000)
3875 {
3876 set = -0x8000;
3877 delta += 0x8000;
3878 }
3879 else if (delta > 0x7fff)
3880 {
3881 set = 0x7fff;
3882 delta -= 0x7fff;
3883 }
3884 else
3885 {
3886 set = delta;
3887 delta = 0;
3888 }
3889 *bufptr++ = set >> 8;
3890 *bufptr++ = set & 0xffff;
3891 c += 3;
3892 }
3893 }
3894
3895 /* Finish adjusting the count. */
3896 while (count > 0)
3897 {
3898 if (bufptr >= *bufend)
3899 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3900 /* 1 is added to each count read. */
3901 --count;
3902 if (count > 0x0f)
3903 {
3904 *bufptr++ = 0x0f;
3905 count -= 0x0f;
3906 }
3907 else
3908 {
3909 *bufptr++ = count;
3910 count = 0;
3911 }
3912 ++c;
3913 }
3914
3915 ++iline;
3916 last = l;
3917 }
3918
3919 if (proc != (proc_t *) NULL)
3920 proc->pdr.lnHigh = last->lineno;
3921 if (file != (efdr_t *) NULL)
3922 {
3923 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3924 file->fdr.cline = totcount;
3925 }
3926
3927 if (linecntptr != (long *) NULL)
3928 *linecntptr += totcount;
3929
3930 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr);
3931
3932 return c;
3933 }
3934
3935 /* Build and swap out the symbols. */
3936
3937 static unsigned long
3938 ecoff_build_symbols (backend, buf, bufend, offset)
3939 const struct ecoff_debug_swap *backend;
3940 char **buf;
3941 char **bufend;
3942 unsigned long offset;
3943 {
3944 const bfd_size_type external_sym_size = backend->external_sym_size;
3945 void (* const swap_sym_out) PARAMS ((bfd *, const SYMR *, PTR))
3946 = backend->swap_sym_out;
3947 char *sym_out;
3948 long isym;
3949 vlinks_t *file_link;
3950
3951 sym_out = *buf + offset;
3952
3953 isym = 0;
3954
3955 /* The symbols are stored by file. */
3956 for (file_link = file_desc.first;
3957 file_link != (vlinks_t *) NULL;
3958 file_link = file_link->next)
3959 {
3960 int ifilesym;
3961 int fil_cnt;
3962 efdr_t *fil_ptr;
3963 efdr_t *fil_end;
3964
3965 if (file_link->next == (vlinks_t *) NULL)
3966 fil_cnt = file_desc.objects_last_page;
3967 else
3968 fil_cnt = file_desc.objects_per_page;
3969 fil_ptr = file_link->datum->file;
3970 fil_end = fil_ptr + fil_cnt;
3971 for (; fil_ptr < fil_end; fil_ptr++)
3972 {
3973 vlinks_t *sym_link;
3974
3975 fil_ptr->fdr.isymBase = isym;
3976 ifilesym = isym;
3977 for (sym_link = fil_ptr->symbols.first;
3978 sym_link != (vlinks_t *) NULL;
3979 sym_link = sym_link->next)
3980 {
3981 int sym_cnt;
3982 localsym_t *sym_ptr;
3983 localsym_t *sym_end;
3984
3985 if (sym_link->next == (vlinks_t *) NULL)
3986 sym_cnt = fil_ptr->symbols.objects_last_page;
3987 else
3988 sym_cnt = fil_ptr->symbols.objects_per_page;
3989 sym_ptr = sym_link->datum->sym;
3990 sym_end = sym_ptr + sym_cnt;
3991 for (; sym_ptr < sym_end; sym_ptr++)
3992 {
3993 int local;
3994 symbolS *as_sym;
3995 forward_t *f;
3996
3997 know (sym_ptr->file_ptr == fil_ptr);
3998
3999 /* If there is no associated gas symbol, then this
4000 is a pure debugging symbol. We have already
4001 added the name (if any) to fil_ptr->strings.
4002 Otherwise we must decide whether this is an
4003 external or a local symbol (actually, it may be
4004 both if the local provides additional debugging
4005 information for the external). */
4006 local = 1;
4007 as_sym = sym_ptr->as_sym;
4008 if (as_sym != (symbolS *) NULL)
4009 {
4010 symint_t indx;
4011
4012 /* The value of a block start symbol is the
4013 offset from the start of the procedure. For
4014 other symbols we just use the gas value (but
4015 we must offset it by the vma of the section,
4016 just as BFD does, because BFD will not see
4017 this value). */
4018 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block
4019 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text)
4020 {
4021 symbolS *begin_sym;
4022
4023 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4024 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4025 if (S_GET_SEGMENT (as_sym)
4026 != S_GET_SEGMENT (begin_sym))
4027 as_warn (_(".begin/.bend in different segments"));
4028 sym_ptr->ecoff_sym.asym.value =
4029 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4030 }
4031 else
4032 sym_ptr->ecoff_sym.asym.value =
4033 (S_GET_VALUE (as_sym)
4034 + bfd_get_section_vma (stdoutput,
4035 S_GET_SEGMENT (as_sym))
4036 + sym_ptr->addend);
4037
4038 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym);
4039
4040 /* Set st_Proc to st_StaticProc for local
4041 functions. */
4042 if (sym_ptr->ecoff_sym.asym.st == st_Proc
4043 && S_IS_DEFINED (as_sym)
4044 && ! S_IS_EXTERNAL (as_sym)
4045 && ! S_IS_WEAK (as_sym))
4046 sym_ptr->ecoff_sym.asym.st = st_StaticProc;
4047
4048 /* Get the type and storage class based on where
4049 the symbol actually wound up. Traditionally,
4050 N_LBRAC and N_RBRAC are *not* relocated. */
4051 indx = sym_ptr->ecoff_sym.asym.index;
4052 if (sym_ptr->ecoff_sym.asym.st == st_Nil
4053 && sym_ptr->ecoff_sym.asym.sc == sc_Nil
4054 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4055 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC)
4056 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC))))
4057 {
4058 segT seg;
4059 const char *segname;
4060 st_t st;
4061 sc_t sc;
4062
4063 seg = S_GET_SEGMENT (as_sym);
4064 segname = segment_name (seg);
4065
4066 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4067 && (S_IS_EXTERNAL (as_sym)
4068 || S_IS_WEAK (as_sym)
4069 || ! S_IS_DEFINED (as_sym)))
4070 {
4071 if ((symbol_get_bfdsym (as_sym)->flags
4072 & BSF_FUNCTION) != 0)
4073 st = st_Proc;
4074 else
4075 st = st_Global;
4076 }
4077 else if (seg == text_section)
4078 st = st_Label;
4079 else
4080 st = st_Static;
4081
4082 if (! S_IS_DEFINED (as_sym))
4083 {
4084 valueT s;
4085
4086 s = symbol_get_obj (as_sym)->ecoff_extern_size;
4087 if (s == 0
4088 || s > (unsigned) bfd_get_gp_size (stdoutput))
4089 sc = sc_Undefined;
4090 else
4091 {
4092 sc = sc_SUndefined;
4093 sym_ptr->ecoff_sym.asym.value = s;
4094 }
4095 #ifdef S_SET_SIZE
4096 S_SET_SIZE (as_sym, s);
4097 #endif
4098 }
4099 else if (S_IS_COMMON (as_sym))
4100 {
4101 if (S_GET_VALUE (as_sym) > 0
4102 && (S_GET_VALUE (as_sym)
4103 <= (unsigned) bfd_get_gp_size (stdoutput)))
4104 sc = sc_SCommon;
4105 else
4106 sc = sc_Common;
4107 }
4108 else if (seg == text_section)
4109 sc = sc_Text;
4110 else if (seg == data_section)
4111 sc = sc_Data;
4112 else if (strcmp (segname, ".rdata") == 0
4113 || strcmp (segname, ".rodata") == 0)
4114 sc = sc_RData;
4115 else if (strcmp (segname, ".sdata") == 0)
4116 sc = sc_SData;
4117 else if (seg == bss_section)
4118 sc = sc_Bss;
4119 else if (strcmp (segname, ".sbss") == 0)
4120 sc = sc_SBss;
4121 else if (seg == &bfd_abs_section)
4122 sc = sc_Abs;
4123 else
4124 {
4125 /* This must be a user named section.
4126 This is not possible in ECOFF, but it
4127 is in ELF. */
4128 sc = sc_Data;
4129 }
4130
4131 sym_ptr->ecoff_sym.asym.st = (int) st;
4132 sym_ptr->ecoff_sym.asym.sc = (int) sc;
4133 }
4134
4135 /* This is just an external symbol if it is
4136 outside a procedure and it has a type.
4137 FIXME: g++ will generate symbols which have
4138 different names in the debugging information
4139 than the actual symbol. Should we handle
4140 them here? */
4141 if ((S_IS_EXTERNAL (as_sym)
4142 || S_IS_WEAK (as_sym)
4143 || ! S_IS_DEFINED (as_sym))
4144 && sym_ptr->proc_ptr == (proc_t *) NULL
4145 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil
4146 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym))
4147 local = 0;
4148
4149 /* This is just an external symbol if it is a
4150 common symbol. */
4151 if (S_IS_COMMON (as_sym))
4152 local = 0;
4153
4154 /* If an st_end symbol has an associated gas
4155 symbol, then it is a local label created for
4156 a .bend or .end directive. Stabs line
4157 numbers will have \001 in the names. */
4158 if (local
4159 && sym_ptr->ecoff_sym.asym.st != st_End
4160 && strchr (sym_ptr->name, '\001') == 0)
4161 sym_ptr->ecoff_sym.asym.iss =
4162 add_string (&fil_ptr->strings,
4163 fil_ptr->str_hash,
4164 sym_ptr->name,
4165 (shash_t **) NULL);
4166 }
4167
4168 /* We now know the index of this symbol; fill in
4169 locations that have been waiting for that
4170 information. */
4171 if (sym_ptr->begin_ptr != (localsym_t *) NULL)
4172 {
4173 localsym_t *begin_ptr;
4174 st_t begin_type;
4175
4176 know (local);
4177 begin_ptr = sym_ptr->begin_ptr;
4178 know (begin_ptr->sym_index != -1);
4179 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index;
4180 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4181 sym_ptr->ecoff_sym.asym.iss =
4182 begin_ptr->ecoff_sym.asym.iss;
4183
4184 begin_type = begin_ptr->ecoff_sym.asym.st;
4185 if (begin_type == st_File
4186 || begin_type == st_Block)
4187 {
4188 begin_ptr->ecoff_sym.asym.index =
4189 isym - ifilesym + 1;
4190 (*swap_sym_out) (stdoutput,
4191 &begin_ptr->ecoff_sym.asym,
4192 (*buf
4193 + offset
4194 + (begin_ptr->sym_index
4195 * external_sym_size)));
4196 }
4197 else
4198 {
4199 know (begin_ptr->index_ptr != (aux_t *) NULL);
4200 begin_ptr->index_ptr->data.isym =
4201 isym - ifilesym + 1;
4202 }
4203
4204 /* The value of the symbol marking the end of a
4205 procedure is the size of the procedure. The
4206 value of the symbol marking the end of a
4207 block is the offset from the start of the
4208 procedure to the block. */
4209 if (begin_type == st_Proc
4210 || begin_type == st_StaticProc)
4211 {
4212 know (as_sym != (symbolS *) NULL);
4213 know (begin_ptr->as_sym != (symbolS *) NULL);
4214 if (S_GET_SEGMENT (as_sym)
4215 != S_GET_SEGMENT (begin_ptr->as_sym))
4216 as_warn (_(".begin/.bend in different segments"));
4217 sym_ptr->ecoff_sym.asym.value =
4218 (S_GET_VALUE (as_sym)
4219 - S_GET_VALUE (begin_ptr->as_sym));
4220
4221 /* If the size is odd, this is probably a
4222 mips16 function; force it to be even. */
4223 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0)
4224 ++sym_ptr->ecoff_sym.asym.value;
4225
4226 #ifdef S_SET_SIZE
4227 S_SET_SIZE (begin_ptr->as_sym,
4228 sym_ptr->ecoff_sym.asym.value);
4229 #endif
4230 }
4231 else if (begin_type == st_Block
4232 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4233 {
4234 symbolS *begin_sym;
4235
4236 know (as_sym != (symbolS *) NULL);
4237 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4238 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4239 if (S_GET_SEGMENT (as_sym)
4240 != S_GET_SEGMENT (begin_sym))
4241 as_warn (_(".begin/.bend in different segments"));
4242 sym_ptr->ecoff_sym.asym.value =
4243 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4244 }
4245 }
4246
4247 for (f = sym_ptr->forward_ref;
4248 f != (forward_t *) NULL;
4249 f = f->next)
4250 {
4251 know (local);
4252 f->ifd_ptr->data.isym = fil_ptr->file_index;
4253 f->index_ptr->data.rndx.index = isym - ifilesym;
4254 }
4255
4256 if (local)
4257 {
4258 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size)
4259 sym_out = ecoff_add_bytes (buf, bufend,
4260 sym_out,
4261 external_sym_size);
4262 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym,
4263 sym_out);
4264 sym_out += external_sym_size;
4265
4266 sym_ptr->sym_index = isym;
4267
4268 if (sym_ptr->proc_ptr != (proc_t *) NULL
4269 && sym_ptr->proc_ptr->sym == sym_ptr)
4270 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym;
4271
4272 ++isym;
4273 }
4274
4275 /* Record the local symbol index and file number in
4276 case this is an external symbol. Note that this
4277 destroys the asym.index field. */
4278 if (as_sym != (symbolS *) NULL
4279 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr)
4280 {
4281 if ((sym_ptr->ecoff_sym.asym.st == st_Proc
4282 || sym_ptr->ecoff_sym.asym.st == st_StaticProc)
4283 && local)
4284 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1;
4285 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index;
4286
4287 /* Don't try to merge an FDR which has an
4288 external symbol attached to it. */
4289 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym))
4290 fil_ptr->fdr.fMerge = 0;
4291 }
4292 }
4293 }
4294 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase;
4295 }
4296 }
4297
4298 return offset + isym * external_sym_size;
4299 }
4300
4301 /* Swap out the procedure information. */
4302
4303 static unsigned long
4304 ecoff_build_procs (backend, buf, bufend, offset)
4305 const struct ecoff_debug_swap *backend;
4306 char **buf;
4307 char **bufend;
4308 unsigned long offset;
4309 {
4310 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4311 void (* const swap_pdr_out) PARAMS ((bfd *, const PDR *, PTR))
4312 = backend->swap_pdr_out;
4313 char *pdr_out;
4314 long iproc;
4315 vlinks_t *file_link;
4316
4317 pdr_out = *buf + offset;
4318
4319 iproc = 0;
4320
4321 /* The procedures are stored by file. */
4322 for (file_link = file_desc.first;
4323 file_link != (vlinks_t *) NULL;
4324 file_link = file_link->next)
4325 {
4326 int fil_cnt;
4327 efdr_t *fil_ptr;
4328 efdr_t *fil_end;
4329
4330 if (file_link->next == (vlinks_t *) NULL)
4331 fil_cnt = file_desc.objects_last_page;
4332 else
4333 fil_cnt = file_desc.objects_per_page;
4334 fil_ptr = file_link->datum->file;
4335 fil_end = fil_ptr + fil_cnt;
4336 for (; fil_ptr < fil_end; fil_ptr++)
4337 {
4338 vlinks_t *proc_link;
4339 int first;
4340
4341 fil_ptr->fdr.ipdFirst = iproc;
4342 first = 1;
4343 for (proc_link = fil_ptr->procs.first;
4344 proc_link != (vlinks_t *) NULL;
4345 proc_link = proc_link->next)
4346 {
4347 int prc_cnt;
4348 proc_t *proc_ptr;
4349 proc_t *proc_end;
4350
4351 if (proc_link->next == (vlinks_t *) NULL)
4352 prc_cnt = fil_ptr->procs.objects_last_page;
4353 else
4354 prc_cnt = fil_ptr->procs.objects_per_page;
4355 proc_ptr = proc_link->datum->proc;
4356 proc_end = proc_ptr + prc_cnt;
4357 for (; proc_ptr < proc_end; proc_ptr++)
4358 {
4359 symbolS *adr_sym;
4360 unsigned long adr;
4361
4362 adr_sym = proc_ptr->sym->as_sym;
4363 adr = (S_GET_VALUE (adr_sym)
4364 + bfd_get_section_vma (stdoutput,
4365 S_GET_SEGMENT (adr_sym)));
4366 if (first)
4367 {
4368 /* This code used to force the adr of the very
4369 first fdr to be 0. However, the native tools
4370 don't do that, and I can't remember why it
4371 used to work that way, so I took it out. */
4372 fil_ptr->fdr.adr = adr;
4373 first = 0;
4374 }
4375 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr;
4376 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size)
4377 pdr_out = ecoff_add_bytes (buf, bufend,
4378 pdr_out,
4379 external_pdr_size);
4380 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out);
4381 pdr_out += external_pdr_size;
4382 ++iproc;
4383 }
4384 }
4385 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst;
4386 }
4387 }
4388
4389 return offset + iproc * external_pdr_size;
4390 }
4391
4392 /* Swap out the aux information. */
4393
4394 static unsigned long
4395 ecoff_build_aux (backend, buf, bufend, offset)
4396 const struct ecoff_debug_swap *backend;
4397 char **buf;
4398 char **bufend;
4399 unsigned long offset;
4400 {
4401 int bigendian;
4402 union aux_ext *aux_out;
4403 long iaux;
4404 vlinks_t *file_link;
4405
4406 bigendian = bfd_big_endian (stdoutput);
4407
4408 aux_out = (union aux_ext *) (*buf + offset);
4409
4410 iaux = 0;
4411
4412 /* The aux entries are stored by file. */
4413 for (file_link = file_desc.first;
4414 file_link != (vlinks_t *) NULL;
4415 file_link = file_link->next)
4416 {
4417 int fil_cnt;
4418 efdr_t *fil_ptr;
4419 efdr_t *fil_end;
4420
4421 if (file_link->next == (vlinks_t *) NULL)
4422 fil_cnt = file_desc.objects_last_page;
4423 else
4424 fil_cnt = file_desc.objects_per_page;
4425 fil_ptr = file_link->datum->file;
4426 fil_end = fil_ptr + fil_cnt;
4427 for (; fil_ptr < fil_end; fil_ptr++)
4428 {
4429 vlinks_t *aux_link;
4430
4431 fil_ptr->fdr.fBigendian = bigendian;
4432 fil_ptr->fdr.iauxBase = iaux;
4433 for (aux_link = fil_ptr->aux_syms.first;
4434 aux_link != (vlinks_t *) NULL;
4435 aux_link = aux_link->next)
4436 {
4437 int aux_cnt;
4438 aux_t *aux_ptr;
4439 aux_t *aux_end;
4440
4441 if (aux_link->next == (vlinks_t *) NULL)
4442 aux_cnt = fil_ptr->aux_syms.objects_last_page;
4443 else
4444 aux_cnt = fil_ptr->aux_syms.objects_per_page;
4445 aux_ptr = aux_link->datum->aux;
4446 aux_end = aux_ptr + aux_cnt;
4447 for (; aux_ptr < aux_end; aux_ptr++)
4448 {
4449 if ((unsigned long) (*bufend - (char *) aux_out)
4450 < sizeof (union aux_ext))
4451 aux_out = ((union aux_ext *)
4452 ecoff_add_bytes (buf, bufend,
4453 (char *) aux_out,
4454 sizeof (union aux_ext)));
4455 switch (aux_ptr->type)
4456 {
4457 case aux_tir:
4458 (*backend->swap_tir_out) (bigendian,
4459 &aux_ptr->data.ti,
4460 &aux_out->a_ti);
4461 break;
4462 case aux_rndx:
4463 (*backend->swap_rndx_out) (bigendian,
4464 &aux_ptr->data.rndx,
4465 &aux_out->a_rndx);
4466 break;
4467 case aux_dnLow:
4468 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow,
4469 aux_out);
4470 break;
4471 case aux_dnHigh:
4472 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh,
4473 aux_out);
4474 break;
4475 case aux_isym:
4476 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym,
4477 aux_out);
4478 break;
4479 case aux_iss:
4480 AUX_PUT_ISS (bigendian, aux_ptr->data.iss,
4481 aux_out);
4482 break;
4483 case aux_width:
4484 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width,
4485 aux_out);
4486 break;
4487 case aux_count:
4488 AUX_PUT_COUNT (bigendian, aux_ptr->data.count,
4489 aux_out);
4490 break;
4491 }
4492
4493 ++aux_out;
4494 ++iaux;
4495 }
4496 }
4497 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase;
4498 }
4499 }
4500
4501 return ecoff_padding_adjust (backend, buf, bufend,
4502 offset + iaux * sizeof (union aux_ext),
4503 (char **) NULL);
4504 }
4505
4506 /* Copy out the strings from a varray_t. This returns the number of
4507 bytes copied, rather than the new offset. */
4508
4509 static unsigned long
4510 ecoff_build_strings (buf, bufend, offset, vp)
4511 char **buf;
4512 char **bufend;
4513 unsigned long offset;
4514 varray_t *vp;
4515 {
4516 unsigned long istr;
4517 char *str_out;
4518 vlinks_t *str_link;
4519
4520 str_out = *buf + offset;
4521
4522 istr = 0;
4523
4524 for (str_link = vp->first;
4525 str_link != (vlinks_t *) NULL;
4526 str_link = str_link->next)
4527 {
4528 unsigned long str_cnt;
4529
4530 if (str_link->next == (vlinks_t *) NULL)
4531 str_cnt = vp->objects_last_page;
4532 else
4533 str_cnt = vp->objects_per_page;
4534
4535 if ((unsigned long)(*bufend - str_out) < str_cnt)
4536 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt);
4537
4538 memcpy (str_out, str_link->datum->byte, str_cnt);
4539 str_out += str_cnt;
4540 istr += str_cnt;
4541 }
4542
4543 return istr;
4544 }
4545
4546 /* Dump out the local strings. */
4547
4548 static unsigned long
4549 ecoff_build_ss (backend, buf, bufend, offset)
4550 const struct ecoff_debug_swap *backend;
4551 char **buf;
4552 char **bufend;
4553 unsigned long offset;
4554 {
4555 long iss;
4556 vlinks_t *file_link;
4557
4558 iss = 0;
4559
4560 for (file_link = file_desc.first;
4561 file_link != (vlinks_t *) NULL;
4562 file_link = file_link->next)
4563 {
4564 int fil_cnt;
4565 efdr_t *fil_ptr;
4566 efdr_t *fil_end;
4567
4568 if (file_link->next == (vlinks_t *) NULL)
4569 fil_cnt = file_desc.objects_last_page;
4570 else
4571 fil_cnt = file_desc.objects_per_page;
4572 fil_ptr = file_link->datum->file;
4573 fil_end = fil_ptr + fil_cnt;
4574 for (; fil_ptr < fil_end; fil_ptr++)
4575 {
4576 long ss_cnt;
4577
4578 fil_ptr->fdr.issBase = iss;
4579 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss,
4580 &fil_ptr->strings);
4581 fil_ptr->fdr.cbSs = ss_cnt;
4582 iss += ss_cnt;
4583 }
4584 }
4585
4586 return ecoff_padding_adjust (backend, buf, bufend, offset + iss,
4587 (char **) NULL);
4588 }
4589
4590 /* Swap out the file descriptors. */
4591
4592 static unsigned long
4593 ecoff_build_fdr (backend, buf, bufend, offset)
4594 const struct ecoff_debug_swap *backend;
4595 char **buf;
4596 char **bufend;
4597 unsigned long offset;
4598 {
4599 const bfd_size_type external_fdr_size = backend->external_fdr_size;
4600 void (* const swap_fdr_out) PARAMS ((bfd *, const FDR *, PTR))
4601 = backend->swap_fdr_out;
4602 long ifile;
4603 char *fdr_out;
4604 vlinks_t *file_link;
4605
4606 ifile = 0;
4607
4608 fdr_out = *buf + offset;
4609
4610 for (file_link = file_desc.first;
4611 file_link != (vlinks_t *) NULL;
4612 file_link = file_link->next)
4613 {
4614 int fil_cnt;
4615 efdr_t *fil_ptr;
4616 efdr_t *fil_end;
4617
4618 if (file_link->next == (vlinks_t *) NULL)
4619 fil_cnt = file_desc.objects_last_page;
4620 else
4621 fil_cnt = file_desc.objects_per_page;
4622 fil_ptr = file_link->datum->file;
4623 fil_end = fil_ptr + fil_cnt;
4624 for (; fil_ptr < fil_end; fil_ptr++)
4625 {
4626 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size)
4627 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out,
4628 external_fdr_size);
4629 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out);
4630 fdr_out += external_fdr_size;
4631 ++ifile;
4632 }
4633 }
4634
4635 return offset + ifile * external_fdr_size;
4636 }
4637
4638 /* Set up the external symbols. These are supposed to be handled by
4639 the backend. This routine just gets the right information and
4640 calls a backend function to deal with it. */
4641
4642 static void
4643 ecoff_setup_ext ()
4644 {
4645 register symbolS *sym;
4646
4647 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4648 {
4649 if (symbol_get_obj (sym)->ecoff_symbol == NULL)
4650 continue;
4651
4652 /* If this is a local symbol, then force the fields to zero. */
4653 if (! S_IS_EXTERNAL (sym)
4654 && ! S_IS_WEAK (sym)
4655 && S_IS_DEFINED (sym))
4656 {
4657 struct localsym *lsym;
4658
4659 lsym = symbol_get_obj (sym)->ecoff_symbol;
4660 lsym->ecoff_sym.asym.value = 0;
4661 lsym->ecoff_sym.asym.st = (int) st_Nil;
4662 lsym->ecoff_sym.asym.sc = (int) sc_Nil;
4663 lsym->ecoff_sym.asym.index = indexNil;
4664 }
4665
4666 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym);
4667 }
4668 }
4669
4670 /* Build the ECOFF debugging information. */
4671
4672 unsigned long
4673 ecoff_build_debug (hdr, bufp, backend)
4674 HDRR *hdr;
4675 char **bufp;
4676 const struct ecoff_debug_swap *backend;
4677 {
4678 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4679 tag_t *ptag;
4680 tag_t *ptag_next;
4681 efdr_t *fil_ptr;
4682 int end_warning;
4683 efdr_t *hold_file_ptr;
4684 proc_t *hold_proc_ptr;
4685 symbolS *sym;
4686 char *buf;
4687 char *bufend;
4688 unsigned long offset;
4689
4690 /* Make sure we have a file. */
4691 if (first_file == (efdr_t *) NULL)
4692 add_file ((const char *) NULL, 0, 1);
4693
4694 /* Handle any top level tags. */
4695 for (ptag = top_tag_head->first_tag;
4696 ptag != (tag_t *) NULL;
4697 ptag = ptag_next)
4698 {
4699 if (ptag->forward_ref != (forward_t *) NULL)
4700 add_unknown_tag (ptag);
4701
4702 ptag_next = ptag->same_block;
4703 ptag->hash_ptr->tag_ptr = ptag->same_name;
4704 free_tag (ptag);
4705 }
4706
4707 free_thead (top_tag_head);
4708
4709 /* Look through the symbols. Add debugging information for each
4710 symbol that has not already received it. */
4711 hold_file_ptr = cur_file_ptr;
4712 hold_proc_ptr = cur_proc_ptr;
4713 cur_proc_ptr = (proc_t *) NULL;
4714 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4715 {
4716 if (symbol_get_obj (sym)->ecoff_symbol != NULL
4717 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL
4718 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0)
4719 continue;
4720
4721 cur_file_ptr = symbol_get_obj (sym)->ecoff_file;
4722 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym,
4723 (bfd_vma) 0, S_GET_VALUE (sym), indexNil);
4724 }
4725 cur_proc_ptr = hold_proc_ptr;
4726 cur_file_ptr = hold_file_ptr;
4727
4728 /* Output an ending symbol for all the files. We have to do this
4729 here for the last file, so we may as well do it for all of the
4730 files. */
4731 end_warning = 0;
4732 for (fil_ptr = first_file;
4733 fil_ptr != (efdr_t *) NULL;
4734 fil_ptr = fil_ptr->next_file)
4735 {
4736 cur_file_ptr = fil_ptr;
4737 while (cur_file_ptr->cur_scope != (scope_t *) NULL
4738 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL)
4739 {
4740 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev;
4741 if (! end_warning && ! cur_file_ptr->fake)
4742 {
4743 as_warn (_("Missing .end or .bend at end of file"));
4744 end_warning = 1;
4745 }
4746 }
4747 if (cur_file_ptr->cur_scope != (scope_t *) NULL)
4748 (void) add_ecoff_symbol ((const char *) NULL,
4749 st_End, sc_Text,
4750 (symbolS *) NULL,
4751 (bfd_vma) 0,
4752 (symint_t) 0,
4753 (symint_t) 0);
4754 }
4755
4756 /* Build the symbolic information. */
4757 offset = 0;
4758 buf = xmalloc (PAGE_SIZE);
4759 bufend = buf + PAGE_SIZE;
4760
4761 /* Build the line number information. */
4762 hdr->cbLineOffset = offset;
4763 offset = ecoff_build_lineno (backend, &buf, &bufend, offset,
4764 &hdr->ilineMax);
4765 hdr->cbLine = offset - hdr->cbLineOffset;
4766
4767 /* We don't use dense numbers at all. */
4768 hdr->idnMax = 0;
4769 hdr->cbDnOffset = 0;
4770
4771 /* We can't build the PDR table until we have built the symbols,
4772 because a PDR contains a symbol index. However, we set aside
4773 space at this point. */
4774 hdr->ipdMax = proc_cnt;
4775 hdr->cbPdOffset = offset;
4776 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size)
4777 (void) ecoff_add_bytes (&buf, &bufend, buf + offset,
4778 proc_cnt * external_pdr_size);
4779 offset += proc_cnt * external_pdr_size;
4780
4781 /* Build the local symbols. */
4782 hdr->cbSymOffset = offset;
4783 offset = ecoff_build_symbols (backend, &buf, &bufend, offset);
4784 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size;
4785
4786 /* Building the symbols initializes the symbol index in the PDR's.
4787 Now we can swap out the PDR's. */
4788 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset);
4789
4790 /* We don't use optimization symbols. */
4791 hdr->ioptMax = 0;
4792 hdr->cbOptOffset = 0;
4793
4794 /* Swap out the auxiliary type information. */
4795 hdr->cbAuxOffset = offset;
4796 offset = ecoff_build_aux (backend, &buf, &bufend, offset);
4797 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext);
4798
4799 /* Copy out the local strings. */
4800 hdr->cbSsOffset = offset;
4801 offset = ecoff_build_ss (backend, &buf, &bufend, offset);
4802 hdr->issMax = offset - hdr->cbSsOffset;
4803
4804 /* We don't use relative file descriptors. */
4805 hdr->crfd = 0;
4806 hdr->cbRfdOffset = 0;
4807
4808 /* Swap out the file descriptors. */
4809 hdr->cbFdOffset = offset;
4810 offset = ecoff_build_fdr (backend, &buf, &bufend, offset);
4811 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size;
4812
4813 /* Set up the external symbols, which are handled by the BFD back
4814 end. */
4815 hdr->issExtMax = 0;
4816 hdr->cbSsExtOffset = 0;
4817 hdr->iextMax = 0;
4818 hdr->cbExtOffset = 0;
4819 ecoff_setup_ext ();
4820
4821 know ((offset & (backend->debug_align - 1)) == 0);
4822
4823 /* FIXME: This value should be determined from the .verstamp directive,
4824 with reasonable defaults in config files. */
4825 #ifdef TC_ALPHA
4826 hdr->vstamp = 0x030b;
4827 #else
4828 hdr->vstamp = 0x020b;
4829 #endif
4830
4831 *bufp = buf;
4832 return offset;
4833 }
4834 \f
4835 /* Allocate a cluster of pages. */
4836
4837 #ifndef MALLOC_CHECK
4838
4839 static page_type *
4840 allocate_cluster (npages)
4841 unsigned long npages;
4842 {
4843 register page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE);
4844
4845 #ifdef ECOFF_DEBUG
4846 if (debug > 3)
4847 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value);
4848 #endif
4849
4850 memset (value, 0, npages * PAGE_USIZE);
4851
4852 return value;
4853 }
4854
4855 static page_type *cluster_ptr = NULL;
4856 static unsigned long pages_left = 0;
4857
4858 #endif /* MALLOC_CHECK */
4859
4860 /* Allocate one page (which is initialized to 0). */
4861
4862 static page_type *
4863 allocate_page ()
4864 {
4865 #ifndef MALLOC_CHECK
4866
4867 if (pages_left == 0)
4868 {
4869 pages_left = MAX_CLUSTER_PAGES;
4870 cluster_ptr = allocate_cluster (pages_left);
4871 }
4872
4873 pages_left--;
4874 return cluster_ptr++;
4875
4876 #else /* MALLOC_CHECK */
4877
4878 page_type *ptr;
4879
4880 ptr = xmalloc (PAGE_USIZE);
4881 memset (ptr, 0, PAGE_USIZE);
4882 return ptr;
4883
4884 #endif /* MALLOC_CHECK */
4885 }
4886 \f
4887 /* Allocate scoping information. */
4888
4889 static scope_t *
4890 allocate_scope ()
4891 {
4892 register scope_t *ptr;
4893 static scope_t initial_scope;
4894
4895 #ifndef MALLOC_CHECK
4896
4897 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4898 if (ptr != (scope_t *) NULL)
4899 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free;
4900 else
4901 {
4902 register int unallocated = alloc_counts[(int) alloc_type_scope].unallocated;
4903 register page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page;
4904
4905 if (unallocated == 0)
4906 {
4907 unallocated = PAGE_SIZE / sizeof (scope_t);
4908 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page ();
4909 alloc_counts[(int) alloc_type_scope].total_pages++;
4910 }
4911
4912 ptr = &cur_page->scope[--unallocated];
4913 alloc_counts[(int) alloc_type_scope].unallocated = unallocated;
4914 }
4915
4916 #else
4917
4918 ptr = (scope_t *) xmalloc (sizeof (scope_t));
4919
4920 #endif
4921
4922 alloc_counts[(int) alloc_type_scope].total_alloc++;
4923 *ptr = initial_scope;
4924 return ptr;
4925 }
4926
4927 /* Free scoping information. */
4928
4929 static void
4930 free_scope (ptr)
4931 scope_t *ptr;
4932 {
4933 alloc_counts[(int) alloc_type_scope].total_free++;
4934
4935 #ifndef MALLOC_CHECK
4936 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4937 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr;
4938 #else
4939 free ((PTR) ptr);
4940 #endif
4941 }
4942 \f
4943 /* Allocate links for pages in a virtual array. */
4944
4945 static vlinks_t *
4946 allocate_vlinks ()
4947 {
4948 register vlinks_t *ptr;
4949 static vlinks_t initial_vlinks;
4950
4951 #ifndef MALLOC_CHECK
4952
4953 register int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated;
4954 register page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page;
4955
4956 if (unallocated == 0)
4957 {
4958 unallocated = PAGE_SIZE / sizeof (vlinks_t);
4959 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page ();
4960 alloc_counts[(int) alloc_type_vlinks].total_pages++;
4961 }
4962
4963 ptr = &cur_page->vlinks[--unallocated];
4964 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated;
4965
4966 #else
4967
4968 ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t));
4969
4970 #endif
4971
4972 alloc_counts[(int) alloc_type_vlinks].total_alloc++;
4973 *ptr = initial_vlinks;
4974 return ptr;
4975 }
4976 \f
4977 /* Allocate string hash buckets. */
4978
4979 static shash_t *
4980 allocate_shash ()
4981 {
4982 register shash_t *ptr;
4983 static shash_t initial_shash;
4984
4985 #ifndef MALLOC_CHECK
4986
4987 register int unallocated = alloc_counts[(int) alloc_type_shash].unallocated;
4988 register page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page;
4989
4990 if (unallocated == 0)
4991 {
4992 unallocated = PAGE_SIZE / sizeof (shash_t);
4993 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page ();
4994 alloc_counts[(int) alloc_type_shash].total_pages++;
4995 }
4996
4997 ptr = &cur_page->shash[--unallocated];
4998 alloc_counts[(int) alloc_type_shash].unallocated = unallocated;
4999
5000 #else
5001
5002 ptr = (shash_t *) xmalloc (sizeof (shash_t));
5003
5004 #endif
5005
5006 alloc_counts[(int) alloc_type_shash].total_alloc++;
5007 *ptr = initial_shash;
5008 return ptr;
5009 }
5010 \f
5011 /* Allocate type hash buckets. */
5012
5013 static thash_t *
5014 allocate_thash ()
5015 {
5016 register thash_t *ptr;
5017 static thash_t initial_thash;
5018
5019 #ifndef MALLOC_CHECK
5020
5021 register int unallocated = alloc_counts[(int) alloc_type_thash].unallocated;
5022 register page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page;
5023
5024 if (unallocated == 0)
5025 {
5026 unallocated = PAGE_SIZE / sizeof (thash_t);
5027 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page ();
5028 alloc_counts[(int) alloc_type_thash].total_pages++;
5029 }
5030
5031 ptr = &cur_page->thash[--unallocated];
5032 alloc_counts[(int) alloc_type_thash].unallocated = unallocated;
5033
5034 #else
5035
5036 ptr = (thash_t *) xmalloc (sizeof (thash_t));
5037
5038 #endif
5039
5040 alloc_counts[(int) alloc_type_thash].total_alloc++;
5041 *ptr = initial_thash;
5042 return ptr;
5043 }
5044 \f
5045 /* Allocate structure, union, or enum tag information. */
5046
5047 static tag_t *
5048 allocate_tag ()
5049 {
5050 register tag_t *ptr;
5051 static tag_t initial_tag;
5052
5053 #ifndef MALLOC_CHECK
5054
5055 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
5056 if (ptr != (tag_t *) NULL)
5057 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free;
5058 else
5059 {
5060 register int unallocated = alloc_counts[(int) alloc_type_tag].unallocated;
5061 register page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page;
5062
5063 if (unallocated == 0)
5064 {
5065 unallocated = PAGE_SIZE / sizeof (tag_t);
5066 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page ();
5067 alloc_counts[(int) alloc_type_tag].total_pages++;
5068 }
5069
5070 ptr = &cur_page->tag[--unallocated];
5071 alloc_counts[(int) alloc_type_tag].unallocated = unallocated;
5072 }
5073
5074 #else
5075
5076 ptr = (tag_t *) xmalloc (sizeof (tag_t));
5077
5078 #endif
5079
5080 alloc_counts[(int) alloc_type_tag].total_alloc++;
5081 *ptr = initial_tag;
5082 return ptr;
5083 }
5084
5085 /* Free scoping information. */
5086
5087 static void
5088 free_tag (ptr)
5089 tag_t *ptr;
5090 {
5091 alloc_counts[(int) alloc_type_tag].total_free++;
5092
5093 #ifndef MALLOC_CHECK
5094 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
5095 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr;
5096 #else
5097 free ((PTR_T) ptr);
5098 #endif
5099 }
5100 \f
5101 /* Allocate forward reference to a yet unknown tag. */
5102
5103 static forward_t *
5104 allocate_forward ()
5105 {
5106 register forward_t *ptr;
5107 static forward_t initial_forward;
5108
5109 #ifndef MALLOC_CHECK
5110
5111 register int unallocated = alloc_counts[(int) alloc_type_forward].unallocated;
5112 register page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page;
5113
5114 if (unallocated == 0)
5115 {
5116 unallocated = PAGE_SIZE / sizeof (forward_t);
5117 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page ();
5118 alloc_counts[(int) alloc_type_forward].total_pages++;
5119 }
5120
5121 ptr = &cur_page->forward[--unallocated];
5122 alloc_counts[(int) alloc_type_forward].unallocated = unallocated;
5123
5124 #else
5125
5126 ptr = (forward_t *) xmalloc (sizeof (forward_t));
5127
5128 #endif
5129
5130 alloc_counts[(int) alloc_type_forward].total_alloc++;
5131 *ptr = initial_forward;
5132 return ptr;
5133 }
5134 \f
5135 /* Allocate head of type hash list. */
5136
5137 static thead_t *
5138 allocate_thead ()
5139 {
5140 register thead_t *ptr;
5141 static thead_t initial_thead;
5142
5143 #ifndef MALLOC_CHECK
5144
5145 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5146 if (ptr != (thead_t *) NULL)
5147 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free;
5148 else
5149 {
5150 register int unallocated = alloc_counts[(int) alloc_type_thead].unallocated;
5151 register page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page;
5152
5153 if (unallocated == 0)
5154 {
5155 unallocated = PAGE_SIZE / sizeof (thead_t);
5156 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page ();
5157 alloc_counts[(int) alloc_type_thead].total_pages++;
5158 }
5159
5160 ptr = &cur_page->thead[--unallocated];
5161 alloc_counts[(int) alloc_type_thead].unallocated = unallocated;
5162 }
5163
5164 #else
5165
5166 ptr = (thead_t *) xmalloc (sizeof (thead_t));
5167
5168 #endif
5169
5170 alloc_counts[(int) alloc_type_thead].total_alloc++;
5171 *ptr = initial_thead;
5172 return ptr;
5173 }
5174
5175 /* Free scoping information. */
5176
5177 static void
5178 free_thead (ptr)
5179 thead_t *ptr;
5180 {
5181 alloc_counts[(int) alloc_type_thead].total_free++;
5182
5183 #ifndef MALLOC_CHECK
5184 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5185 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr;
5186 #else
5187 free ((PTR_T) ptr);
5188 #endif
5189 }
5190 \f
5191 static lineno_list_t *
5192 allocate_lineno_list ()
5193 {
5194 register lineno_list_t *ptr;
5195 static lineno_list_t initial_lineno_list;
5196
5197 #ifndef MALLOC_CHECK
5198
5199 register int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated;
5200 register page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page;
5201
5202 if (unallocated == 0)
5203 {
5204 unallocated = PAGE_SIZE / sizeof (lineno_list_t);
5205 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page ();
5206 alloc_counts[(int) alloc_type_lineno].total_pages++;
5207 }
5208
5209 ptr = &cur_page->lineno[--unallocated];
5210 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated;
5211
5212 #else
5213
5214 ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t));
5215
5216 #endif
5217
5218 alloc_counts[(int) alloc_type_lineno].total_alloc++;
5219 *ptr = initial_lineno_list;
5220 return ptr;
5221 }
5222
5223 void
5224 ecoff_set_gp_prolog_size (sz)
5225 int sz;
5226 {
5227 if (cur_proc_ptr == 0)
5228 return;
5229
5230 cur_proc_ptr->pdr.gp_prologue = sz;
5231 if (cur_proc_ptr->pdr.gp_prologue != sz)
5232 {
5233 as_warn (_("GP prologue size exceeds field size, using 0 instead"));
5234 cur_proc_ptr->pdr.gp_prologue = 0;
5235 }
5236
5237 cur_proc_ptr->pdr.gp_used = 1;
5238 }
5239
5240 int
5241 ecoff_no_current_file ()
5242 {
5243 return cur_file_ptr == (efdr_t *) NULL;
5244 }
5245
5246 void
5247 ecoff_generate_asm_lineno ()
5248 {
5249 unsigned int lineno;
5250 char *filename;
5251 lineno_list_t *list;
5252
5253 as_where (&filename, &lineno);
5254
5255 if (current_stabs_filename == (char *) NULL
5256 || strcmp (current_stabs_filename, filename))
5257 add_file (filename, 0, 1);
5258
5259 list = allocate_lineno_list ();
5260
5261 list->next = (lineno_list_t *) NULL;
5262 list->file = cur_file_ptr;
5263 list->proc = cur_proc_ptr;
5264 list->frag = frag_now;
5265 list->paddr = frag_now_fix ();
5266 list->lineno = lineno;
5267
5268 /* We don't want to merge files which have line numbers. */
5269 cur_file_ptr->fdr.fMerge = 0;
5270
5271 /* A .loc directive will sometimes appear before a .ent directive,
5272 which means that cur_proc_ptr will be NULL here. Arrange to
5273 patch this up. */
5274 if (cur_proc_ptr == (proc_t *) NULL)
5275 {
5276 lineno_list_t **pl;
5277
5278 pl = &noproc_lineno;
5279 while (*pl != (lineno_list_t *) NULL)
5280 pl = &(*pl)->next;
5281 *pl = list;
5282 }
5283 else
5284 {
5285 last_lineno = list;
5286 *last_lineno_ptr = list;
5287 last_lineno_ptr = &list->next;
5288 }
5289 }
5290
5291 #else
5292
5293 void
5294 ecoff_generate_asm_lineno ()
5295 {
5296 }
5297
5298 #endif /* ECOFF_DEBUGGING */
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