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gas: maintain O_constant signedness in more cases
[binutils-gdb.git] / gas / ecoff.c
blob1c01911f55cb3e3d866fb77fce640267c737acb8
1 /* ECOFF debugging support.
2 Copyright (C) 1993-2023 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
4 This file was put together by Ian Lance Taylor <ian@cygnus.com>. A
5 good deal of it comes directly from mips-tfile.c, by Michael
6 Meissner <meissner@osf.org>.
7
8 This file is part of GAS.
9
10 GAS is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3, or (at your option)
13 any later version.
14
15 GAS is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with GAS; see the file COPYING. If not, write to the Free
22 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23 02110-1301, USA. */
24
25 #include "as.h"
26
27 /* This file is compiled conditionally for those targets which use
28 ECOFF debugging information (e.g., MIPS ELF, Alpha ECOFF). */
29
30 #include "ecoff.h"
31
32 #ifdef ECOFF_DEBUGGING
33
34 #include "coff/internal.h"
35 #include "coff/symconst.h"
36 #include "aout/stab_gnu.h"
37 #include "filenames.h"
38 #include "safe-ctype.h"
39
40 /* Why isn't this in coff/sym.h? */
41 #define ST_RFDESCAPE 0xfff
42
43 /* This file constructs the information used by the ECOFF debugging
44 format. It just builds a large block of data.
45
46 We support both ECOFF style debugging and stabs debugging (the
47 stabs symbols are encapsulated in ECOFF symbols). This should let
48 us handle anything the compiler might throw at us. */
49
50 /* Here is a brief description of the MIPS ECOFF symbol table, by
51 Michael Meissner. The MIPS symbol table has the following pieces:
52
53 Symbolic Header
54 |
55 +-- Auxiliary Symbols
56 |
57 +-- Dense number table
58 |
59 +-- Optimizer Symbols
60 |
61 +-- External Strings
62 |
63 +-- External Symbols
64 |
65 +-- Relative file descriptors
66 |
67 +-- File table
68 |
69 +-- Procedure table
70 |
71 +-- Line number table
72 |
73 +-- Local Strings
74 |
75 +-- Local Symbols
76
77 The symbolic header points to each of the other tables, and also
78 contains the number of entries. It also contains a magic number
79 and MIPS compiler version number, such as 2.0.
80
81 The auxiliary table is a series of 32 bit integers, that are
82 referenced as needed from the local symbol table. Unlike standard
83 COFF, the aux. information does not follow the symbol that uses
84 it, but rather is a separate table. In theory, this would allow
85 the MIPS compilers to collapse duplicate aux. entries, but I've not
86 noticed this happening with the 1.31 compiler suite. The different
87 types of aux. entries are:
88
89 1) dnLow: Low bound on array dimension.
90
91 2) dnHigh: High bound on array dimension.
92
93 3) isym: Index to the local symbol which is the start of the
94 function for the end of function first aux. entry.
95
96 4) width: Width of structures and bitfields.
97
98 5) count: Count of ranges for variant part.
99
100 6) rndx: A relative index into the symbol table. The relative
101 index field has two parts: rfd which is a pointer into the
102 relative file index table or ST_RFDESCAPE which says the next
103 aux. entry is the file number, and index: which is the pointer
104 into the local symbol within a given file table. This is for
105 things like references to types defined in another file.
106
107 7) Type information: This is like the COFF type bits, except it
108 is 32 bits instead of 16; they still have room to add new
109 basic types; and they can handle more than 6 levels of array,
110 pointer, function, etc. Each type information field contains
111 the following structure members:
112
113 a) fBitfield: a bit that says this is a bitfield, and the
114 size in bits follows as the next aux. entry.
115
116 b) continued: a bit that says the next aux. entry is a
117 continuation of the current type information (in case
118 there are more than 6 levels of array/ptr/function).
119
120 c) bt: an integer containing the base type before adding
121 array, pointer, function, etc. qualifiers. The
122 current base types that I have documentation for are:
123
124 btNil -- undefined
125 btAdr -- address - integer same size as ptr
126 btChar -- character
127 btUChar -- unsigned character
128 btShort -- short
129 btUShort -- unsigned short
130 btInt -- int
131 btUInt -- unsigned int
132 btLong -- long
133 btULong -- unsigned long
134 btFloat -- float (real)
135 btDouble -- Double (real)
136 btStruct -- Structure (Record)
137 btUnion -- Union (variant)
138 btEnum -- Enumerated
139 btTypedef -- defined via a typedef isymRef
140 btRange -- subrange of int
141 btSet -- pascal sets
142 btComplex -- fortran complex
143 btDComplex -- fortran double complex
144 btIndirect -- forward or unnamed typedef
145 btFixedDec -- Fixed Decimal
146 btFloatDec -- Float Decimal
147 btString -- Varying Length Character String
148 btBit -- Aligned Bit String
149 btPicture -- Picture
150 btVoid -- Void (MIPS cc revision >= 2.00)
151
152 d) tq0 - tq5: type qualifier fields as needed. The
153 current type qualifier fields I have documentation for
154 are:
155
156 tqNil -- no more qualifiers
157 tqPtr -- pointer
158 tqProc -- procedure
159 tqArray -- array
160 tqFar -- 8086 far pointers
161 tqVol -- volatile
162
163 The dense number table is used in the front ends, and disappears by
164 the time the .o is created.
165
166 With the 1.31 compiler suite, the optimization symbols don't seem
167 to be used as far as I can tell.
168
169 The linker is the first entity that creates the relative file
170 descriptor table, and I believe it is used so that the individual
171 file table pointers don't have to be rewritten when the objects are
172 merged together into the program file.
173
174 Unlike COFF, the basic symbol & string tables are split into
175 external and local symbols/strings. The relocation information
176 only goes off of the external symbol table, and the debug
177 information only goes off of the internal symbol table. The
178 external symbols can have links to an appropriate file index and
179 symbol within the file to give it the appropriate type information.
180 Because of this, the external symbols are actually larger than the
181 internal symbols (to contain the link information), and contain the
182 local symbol structure as a member, though this member is not the
183 first member of the external symbol structure (!). I suspect this
184 split is to make strip easier to deal with.
185
186 Each file table has offsets for where the line numbers, local
187 strings, local symbols, and procedure table starts from within the
188 global tables, and the indices are reset to 0 for each of those
189 tables for the file.
190
191 The procedure table contains the binary equivalents of the .ent
192 (start of the function address), .frame (what register is the
193 virtual frame pointer, constant offset from the register to obtain
194 the VFP, and what register holds the return address), .mask/.fmask
195 (bitmask of saved registers, and where the first register is stored
196 relative to the VFP) assembler directives. It also contains the
197 low and high bounds of the line numbers if debugging is turned on.
198
199 The line number table is a compressed form of the normal COFF line
200 table. Each line number entry is either 1 or 3 bytes long, and
201 contains a signed delta from the previous line, and an unsigned
202 count of the number of instructions this statement takes.
203
204 The local symbol table contains the following fields:
205
206 1) iss: index to the local string table giving the name of the
207 symbol.
208
209 2) value: value of the symbol (address, register number, etc.).
210
211 3) st: symbol type. The current symbol types are:
212
213 stNil -- Nuthin' special
214 stGlobal -- external symbol
215 stStatic -- static
216 stParam -- procedure argument
217 stLocal -- local variable
218 stLabel -- label
219 stProc -- External Procedure
220 stBlock -- beginning of block
221 stEnd -- end (of anything)
222 stMember -- member (of anything)
223 stTypedef -- type definition
224 stFile -- file name
225 stRegReloc -- register relocation
226 stForward -- forwarding address
227 stStaticProc -- Static procedure
228 stConstant -- const
229
230 4) sc: storage class. The current storage classes are:
231
232 scText -- text symbol
233 scData -- initialized data symbol
234 scBss -- un-initialized data symbol
235 scRegister -- value of symbol is register number
236 scAbs -- value of symbol is absolute
237 scUndefined -- who knows?
238 scCdbLocal -- variable's value is IN se->va.??
239 scBits -- this is a bit field
240 scCdbSystem -- value is IN debugger's address space
241 scRegImage -- register value saved on stack
242 scInfo -- symbol contains debugger information
243 scUserStruct -- addr in struct user for current process
244 scSData -- load time only small data
245 scSBss -- load time only small common
246 scRData -- load time only read only data
247 scVar -- Var parameter (fortranpascal)
248 scCommon -- common variable
249 scSCommon -- small common
250 scVarRegister -- Var parameter in a register
251 scVariant -- Variant record
252 scSUndefined -- small undefined(external) data
253 scInit -- .init section symbol
254
255 5) index: pointer to a local symbol or aux. entry.
256
257 For the following program:
258
259 #include <stdio.h>
260
261 main(){
262 printf("Hello World!\n");
263 return 0;
264 }
265
266 Mips-tdump produces the following information:
267
268 Global file header:
269 magic number 0x162
270 # sections 2
271 timestamp 645311799, Wed Jun 13 17:16:39 1990
272 symbolic header offset 284
273 symbolic header size 96
274 optional header 56
275 flags 0x0
276
277 Symbolic header, magic number = 0x7009, vstamp = 1.31:
278
279 Info Offset Number Bytes
280 ==== ====== ====== =====
281
282 Line numbers 380 4 4 [13]
283 Dense numbers 0 0 0
284 Procedures Tables 384 1 52
285 Local Symbols 436 16 192
286 Optimization Symbols 0 0 0
287 Auxiliary Symbols 628 39 156
288 Local Strings 784 80 80
289 External Strings 864 144 144
290 File Tables 1008 2 144
291 Relative Files 0 0 0
292 External Symbols 1152 20 320
293
294 File #0, "hello2.c"
295
296 Name index = 1 Readin = No
297 Merge = No Endian = LITTLE
298 Debug level = G2 Language = C
299 Adr = 0x00000000
300
301 Info Start Number Size Offset
302 ==== ===== ====== ==== ======
303 Local strings 0 15 15 784
304 Local symbols 0 6 72 436
305 Line numbers 0 13 13 380
306 Optimization symbols 0 0 0 0
307 Procedures 0 1 52 384
308 Auxiliary symbols 0 14 56 628
309 Relative Files 0 0 0 0
310
311 There are 6 local symbols, starting at 436
312
313 Symbol# 0: "hello2.c"
314 End+1 symbol = 6
315 String index = 1
316 Storage class = Text Index = 6
317 Symbol type = File Value = 0
318
319 Symbol# 1: "main"
320 End+1 symbol = 5
321 Type = int
322 String index = 10
323 Storage class = Text Index = 12
324 Symbol type = Proc Value = 0
325
326 Symbol# 2: ""
327 End+1 symbol = 4
328 String index = 0
329 Storage class = Text Index = 4
330 Symbol type = Block Value = 8
331
332 Symbol# 3: ""
333 First symbol = 2
334 String index = 0
335 Storage class = Text Index = 2
336 Symbol type = End Value = 28
337
338 Symbol# 4: "main"
339 First symbol = 1
340 String index = 10
341 Storage class = Text Index = 1
342 Symbol type = End Value = 52
343
344 Symbol# 5: "hello2.c"
345 First symbol = 0
346 String index = 1
347 Storage class = Text Index = 0
348 Symbol type = End Value = 0
349
350 There are 14 auxiliary table entries, starting at 628.
351
352 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
353 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
354 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0]
355 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0]
356 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
357 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0]
358 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0]
359 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0]
360 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0]
361 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0]
362 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0]
363 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0]
364 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0]
365 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
366
367 There are 1 procedure descriptor entries, starting at 0.
368
369 Procedure descriptor 0:
370 Name index = 10 Name = "main"
371 .mask 0x80000000,-4 .fmask 0x00000000,0
372 .frame $29,24,$31
373 Opt. start = -1 Symbols start = 1
374 First line # = 3 Last line # = 6
375 Line Offset = 0 Address = 0x00000000
376
377 There are 4 bytes holding line numbers, starting at 380.
378 Line 3, delta 0, count 2
379 Line 4, delta 1, count 3
380 Line 5, delta 1, count 2
381 Line 6, delta 1, count 6
382
383 File #1, "/usr/include/stdio.h"
384
385 Name index = 1 Readin = No
386 Merge = Yes Endian = LITTLE
387 Debug level = G2 Language = C
388 Adr = 0x00000000
389
390 Info Start Number Size Offset
391 ==== ===== ====== ==== ======
392 Local strings 15 65 65 799
393 Local symbols 6 10 120 508
394 Line numbers 0 0 0 380
395 Optimization symbols 0 0 0 0
396 Procedures 1 0 0 436
397 Auxiliary symbols 14 25 100 684
398 Relative Files 0 0 0 0
399
400 There are 10 local symbols, starting at 442
401
402 Symbol# 0: "/usr/include/stdio.h"
403 End+1 symbol = 10
404 String index = 1
405 Storage class = Text Index = 10
406 Symbol type = File Value = 0
407
408 Symbol# 1: "_iobuf"
409 End+1 symbol = 9
410 String index = 22
411 Storage class = Info Index = 9
412 Symbol type = Block Value = 20
413
414 Symbol# 2: "_cnt"
415 Type = int
416 String index = 29
417 Storage class = Info Index = 4
418 Symbol type = Member Value = 0
419
420 Symbol# 3: "_ptr"
421 Type = ptr to char
422 String index = 34
423 Storage class = Info Index = 15
424 Symbol type = Member Value = 32
425
426 Symbol# 4: "_base"
427 Type = ptr to char
428 String index = 39
429 Storage class = Info Index = 16
430 Symbol type = Member Value = 64
431
432 Symbol# 5: "_bufsiz"
433 Type = int
434 String index = 45
435 Storage class = Info Index = 4
436 Symbol type = Member Value = 96
437
438 Symbol# 6: "_flag"
439 Type = short
440 String index = 53
441 Storage class = Info Index = 3
442 Symbol type = Member Value = 128
443
444 Symbol# 7: "_file"
445 Type = char
446 String index = 59
447 Storage class = Info Index = 2
448 Symbol type = Member Value = 144
449
450 Symbol# 8: ""
451 First symbol = 1
452 String index = 0
453 Storage class = Info Index = 1
454 Symbol type = End Value = 0
455
456 Symbol# 9: "/usr/include/stdio.h"
457 First symbol = 0
458 String index = 1
459 Storage class = Text Index = 0
460 Symbol type = End Value = 0
461
462 There are 25 auxiliary table entries, starting at 642.
463
464 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f]
465 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
466 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
467 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0]
468 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1]
469 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
470 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4]
471 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
472 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
473 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0]
474 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0]
475 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
476 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
477 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
478 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
479 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
480 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
481 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
482 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
483 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
484 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
485 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
486 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
487 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
488 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
489
490 There are 0 procedure descriptor entries, starting at 1.
491
492 There are 20 external symbols, starting at 1152
493
494 Symbol# 0: "_iob"
495 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 }
496 String index = 0 Ifd = 1
497 Storage class = Nil Index = 17
498 Symbol type = Global Value = 60
499
500 Symbol# 1: "fopen"
501 String index = 5 Ifd = 1
502 Storage class = Nil Index = 1048575
503 Symbol type = Proc Value = 0
504
505 Symbol# 2: "fdopen"
506 String index = 11 Ifd = 1
507 Storage class = Nil Index = 1048575
508 Symbol type = Proc Value = 0
509
510 Symbol# 3: "freopen"
511 String index = 18 Ifd = 1
512 Storage class = Nil Index = 1048575
513 Symbol type = Proc Value = 0
514
515 Symbol# 4: "popen"
516 String index = 26 Ifd = 1
517 Storage class = Nil Index = 1048575
518 Symbol type = Proc Value = 0
519
520 Symbol# 5: "tmpfile"
521 String index = 32 Ifd = 1
522 Storage class = Nil Index = 1048575
523 Symbol type = Proc Value = 0
524
525 Symbol# 6: "ftell"
526 String index = 40 Ifd = 1
527 Storage class = Nil Index = 1048575
528 Symbol type = Proc Value = 0
529
530 Symbol# 7: "rewind"
531 String index = 46 Ifd = 1
532 Storage class = Nil Index = 1048575
533 Symbol type = Proc Value = 0
534
535 Symbol# 8: "setbuf"
536 String index = 53 Ifd = 1
537 Storage class = Nil Index = 1048575
538 Symbol type = Proc Value = 0
539
540 Symbol# 9: "setbuffer"
541 String index = 60 Ifd = 1
542 Storage class = Nil Index = 1048575
543 Symbol type = Proc Value = 0
544
545 Symbol# 10: "setlinebuf"
546 String index = 70 Ifd = 1
547 Storage class = Nil Index = 1048575
548 Symbol type = Proc Value = 0
549
550 Symbol# 11: "fgets"
551 String index = 81 Ifd = 1
552 Storage class = Nil Index = 1048575
553 Symbol type = Proc Value = 0
554
555 Symbol# 12: "gets"
556 String index = 87 Ifd = 1
557 Storage class = Nil Index = 1048575
558 Symbol type = Proc Value = 0
559
560 Symbol# 13: "ctermid"
561 String index = 92 Ifd = 1
562 Storage class = Nil Index = 1048575
563 Symbol type = Proc Value = 0
564
565 Symbol# 14: "cuserid"
566 String index = 100 Ifd = 1
567 Storage class = Nil Index = 1048575
568 Symbol type = Proc Value = 0
569
570 Symbol# 15: "tempnam"
571 String index = 108 Ifd = 1
572 Storage class = Nil Index = 1048575
573 Symbol type = Proc Value = 0
574
575 Symbol# 16: "tmpnam"
576 String index = 116 Ifd = 1
577 Storage class = Nil Index = 1048575
578 Symbol type = Proc Value = 0
579
580 Symbol# 17: "sprintf"
581 String index = 123 Ifd = 1
582 Storage class = Nil Index = 1048575
583 Symbol type = Proc Value = 0
584
585 Symbol# 18: "main"
586 Type = int
587 String index = 131 Ifd = 0
588 Storage class = Text Index = 1
589 Symbol type = Proc Value = 0
590
591 Symbol# 19: "printf"
592 String index = 136 Ifd = 0
593 Storage class = Undefined Index = 1048575
594 Symbol type = Proc Value = 0
595
596 The following auxiliary table entries were unused:
597
598 #0 0 0x00000000 void
599 #2 8 0x00000008 char
600 #3 16 0x00000010 short
601 #4 24 0x00000018 int
602 #5 32 0x00000020 long
603 #6 40 0x00000028 float
604 #7 44 0x0000002c double
605 #8 12 0x0000000c unsigned char
606 #9 20 0x00000014 unsigned short
607 #10 28 0x0000001c unsigned int
608 #11 36 0x00000024 unsigned long
609 #14 0 0x00000000 void
610 #15 24 0x00000018 int
611 #19 32 0x00000020 long
612 #20 40 0x00000028 float
613 #21 44 0x0000002c double
614 #22 12 0x0000000c unsigned char
615 #23 20 0x00000014 unsigned short
616 #24 28 0x0000001c unsigned int
617 #25 36 0x00000024 unsigned long
618 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 }
619 */
620 \f
621 /* Redefinition of storage classes as an enumeration for better
622 debugging. */
623
624 typedef enum sc {
625 sc_Nil = scNil, /* no storage class */
626 sc_Text = scText, /* text symbol */
627 sc_Data = scData, /* initialized data symbol */
628 sc_Bss = scBss, /* un-initialized data symbol */
629 sc_Register = scRegister, /* value of symbol is register number */
630 sc_Abs = scAbs, /* value of symbol is absolute */
631 sc_Undefined = scUndefined, /* who knows? */
632 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */
633 sc_Bits = scBits, /* this is a bit field */
634 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */
635 sc_RegImage = scRegImage, /* register value saved on stack */
636 sc_Info = scInfo, /* symbol contains debugger information */
637 sc_UserStruct = scUserStruct, /* addr in struct user for current process */
638 sc_SData = scSData, /* load time only small data */
639 sc_SBss = scSBss, /* load time only small common */
640 sc_RData = scRData, /* load time only read only data */
641 sc_Var = scVar, /* Var parameter (fortran,pascal) */
642 sc_Common = scCommon, /* common variable */
643 sc_SCommon = scSCommon, /* small common */
644 sc_VarRegister = scVarRegister, /* Var parameter in a register */
645 sc_Variant = scVariant, /* Variant record */
646 sc_SUndefined = scSUndefined, /* small undefined(external) data */
647 sc_Init = scInit, /* .init section symbol */
648 sc_Max = scMax /* Max storage class+1 */
649 } sc_t;
650
651 /* Redefinition of symbol type. */
652
653 typedef enum st {
654 st_Nil = stNil, /* Nuthin' special */
655 st_Global = stGlobal, /* external symbol */
656 st_Static = stStatic, /* static */
657 st_Param = stParam, /* procedure argument */
658 st_Local = stLocal, /* local variable */
659 st_Label = stLabel, /* label */
660 st_Proc = stProc, /* " " Procedure */
661 st_Block = stBlock, /* beginning of block */
662 st_End = stEnd, /* end (of anything) */
663 st_Member = stMember, /* member (of anything - struct/union/enum */
664 st_Typedef = stTypedef, /* type definition */
665 st_File = stFile, /* file name */
666 st_RegReloc = stRegReloc, /* register relocation */
667 st_Forward = stForward, /* forwarding address */
668 st_StaticProc = stStaticProc, /* load time only static procs */
669 st_Constant = stConstant, /* const */
670 st_Str = stStr, /* string */
671 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */
672 st_Expr = stExpr, /* 2+2 vs. 4 */
673 st_Type = stType, /* post-coercion SER */
674 st_Max = stMax /* max type+1 */
675 } st_t;
676
677 /* Redefinition of type qualifiers. */
678
679 typedef enum tq {
680 tq_Nil = tqNil, /* bt is what you see */
681 tq_Ptr = tqPtr, /* pointer */
682 tq_Proc = tqProc, /* procedure */
683 tq_Array = tqArray, /* duh */
684 tq_Far = tqFar, /* longer addressing - 8086/8 land */
685 tq_Vol = tqVol, /* volatile */
686 tq_Max = tqMax /* Max type qualifier+1 */
687 } tq_t;
688
689 /* Redefinition of basic types. */
690
691 typedef enum bt {
692 bt_Nil = btNil, /* undefined */
693 bt_Adr = btAdr, /* address - integer same size as pointer */
694 bt_Char = btChar, /* character */
695 bt_UChar = btUChar, /* unsigned character */
696 bt_Short = btShort, /* short */
697 bt_UShort = btUShort, /* unsigned short */
698 bt_Int = btInt, /* int */
699 bt_UInt = btUInt, /* unsigned int */
700 bt_Long = btLong, /* long */
701 bt_ULong = btULong, /* unsigned long */
702 bt_Float = btFloat, /* float (real) */
703 bt_Double = btDouble, /* Double (real) */
704 bt_Struct = btStruct, /* Structure (Record) */
705 bt_Union = btUnion, /* Union (variant) */
706 bt_Enum = btEnum, /* Enumerated */
707 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */
708 bt_Range = btRange, /* subrange of int */
709 bt_Set = btSet, /* pascal sets */
710 bt_Complex = btComplex, /* fortran complex */
711 bt_DComplex = btDComplex, /* fortran double complex */
712 bt_Indirect = btIndirect, /* forward or unnamed typedef */
713 bt_FixedDec = btFixedDec, /* Fixed Decimal */
714 bt_FloatDec = btFloatDec, /* Float Decimal */
715 bt_String = btString, /* Varying Length Character String */
716 bt_Bit = btBit, /* Aligned Bit String */
717 bt_Picture = btPicture, /* Picture */
718 bt_Void = btVoid, /* Void */
719 bt_Max = btMax /* Max basic type+1 */
720 } bt_t;
721
722 #define N_TQ itqMax
723
724 /* States for whether to hash type or not. */
725 typedef enum hash_state {
726 hash_no = 0, /* Don't hash type */
727 hash_yes = 1, /* OK to hash type, or use previous hash */
728 hash_record = 2 /* OK to record hash, but don't use prev. */
729 } hash_state_t;
730
731 /* Types of different sized allocation requests. */
732 enum alloc_type {
733 alloc_type_none, /* dummy value */
734 alloc_type_scope, /* nested scopes linked list */
735 alloc_type_vlinks, /* glue linking pages in varray */
736 alloc_type_shash, /* string hash element */
737 alloc_type_thash, /* type hash element */
738 alloc_type_tag, /* struct/union/tag element */
739 alloc_type_forward, /* element to hold unknown tag */
740 alloc_type_thead, /* head of type hash list */
741 alloc_type_varray, /* general varray allocation */
742 alloc_type_lineno, /* line number list */
743 alloc_type_last /* last+1 element for array bounds */
744 };
745
746 /* Types of auxiliary type information. */
747 enum aux_type {
748 aux_tir, /* TIR type information */
749 aux_rndx, /* relative index into symbol table */
750 aux_dnLow, /* low dimension */
751 aux_dnHigh, /* high dimension */
752 aux_isym, /* symbol table index (end of proc) */
753 aux_iss, /* index into string space (not used) */
754 aux_width, /* width for non-default sized struc fields */
755 aux_count /* count of ranges for variant arm */
756 };
757 \f
758 /* Structures to provide n-number of virtual arrays, each of which can
759 grow linearly, and which are written in the object file as
760 sequential pages. On systems with a BSD malloc, the
761 MAX_CLUSTER_PAGES should be 1 less than a power of two, since
762 malloc adds it's overhead, and rounds up to the next power of 2.
763 Pages are linked together via a linked list.
764
765 If PAGE_SIZE is > 4096, the string length in the shash_t structure
766 can't be represented (assuming there are strings > 4096 bytes). */
767
768 /* FIXME: Yes, there can be such strings while emitting C++ class debug
769 info. Templates are the offender here, the test case in question
770 having a mangled class name of
771
772 t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\
773 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey
774
775 Repeat that a couple dozen times while listing the class members and
776 you've got strings over 4k. Hack around this for now by increasing
777 the page size. A proper solution would abandon this structure scheme
778 certainly for very large strings, and possibly entirely. */
779
780 #ifndef PAGE_SIZE
781 #define PAGE_SIZE (8*1024) /* size of varray pages */
782 #endif
783
784 #define PAGE_USIZE ((unsigned long) PAGE_SIZE)
785
786 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */
787 #define MAX_CLUSTER_PAGES 63
788 #endif
789
790 /* Linked list connecting separate page allocations. */
791 typedef struct vlinks {
792 struct vlinks *prev; /* previous set of pages */
793 struct vlinks *next; /* next set of pages */
794 union page *datum; /* start of page */
795 unsigned long start_index; /* starting index # of page */
796 } vlinks_t;
797
798 /* Virtual array header. */
799 typedef struct varray {
800 vlinks_t *first; /* first page link */
801 vlinks_t *last; /* last page link */
802 unsigned long num_allocated; /* # objects allocated */
803 unsigned short object_size; /* size in bytes of each object */
804 unsigned short objects_per_page; /* # objects that can fit on a page */
805 unsigned short objects_last_page; /* # objects allocated on last page */
806 } varray_t;
807
808 #ifndef MALLOC_CHECK
809 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type))
810 #else
811 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE)
812 #endif
813
814 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \
815 (vlinks_t *)0, /* first */ \
816 (vlinks_t *)0, /* last */ \
817 0, /* num_allocated */ \
818 sizeof (type), /* object_size */ \
819 OBJECTS_PER_PAGE (type), /* objects_per_page */ \
820 OBJECTS_PER_PAGE (type), /* objects_last_page */ \
821 }
822
823 /* Master type for indexes within the symbol table. */
824 typedef unsigned long symint_t;
825
826 /* Linked list support for nested scopes (file, block, structure, etc.). */
827 typedef struct scope {
828 struct scope *prev; /* previous scope level */
829 struct scope *free; /* free list pointer */
830 struct localsym *lsym; /* pointer to local symbol node */
831 st_t type; /* type of the node */
832 } scope_t;
833
834 /* For a local symbol we store a gas symbol as well as the debugging
835 information we generate. The gas symbol will be NULL if this is
836 only a debugging symbol. */
837 typedef struct localsym {
838 const char *name; /* symbol name */
839 symbolS *as_sym; /* symbol as seen by gas */
840 bfd_vma addend; /* addend to as_sym value */
841 struct efdr *file_ptr; /* file pointer */
842 struct ecoff_proc *proc_ptr; /* proc pointer */
843 struct localsym *begin_ptr; /* symbol at start of block */
844 struct ecoff_aux *index_ptr; /* index value to be filled in */
845 struct forward *forward_ref; /* forward references to this symbol */
846 long sym_index; /* final symbol index */
847 EXTR ecoff_sym; /* ECOFF debugging symbol */
848 } localsym_t;
849
850 /* For aux information we keep the type and the data. */
851 typedef struct ecoff_aux {
852 enum aux_type type; /* aux type */
853 AUXU data; /* aux data */
854 } aux_t;
855
856 /* For a procedure we store the gas symbol as well as the PDR
857 debugging information. */
858 typedef struct ecoff_proc {
859 localsym_t *sym; /* associated symbol */
860 PDR pdr; /* ECOFF debugging info */
861 } proc_t;
862
863 /* Number of proc_t structures allocated. */
864 static unsigned long proc_cnt;
865
866 /* Forward reference list for tags referenced, but not yet defined. */
867 typedef struct forward {
868 struct forward *next; /* next forward reference */
869 struct forward *free; /* free list pointer */
870 aux_t *ifd_ptr; /* pointer to store file index */
871 aux_t *index_ptr; /* pointer to store symbol index */
872 } forward_t;
873
874 /* Linked list support for tags. The first tag in the list is always
875 the current tag for that block. */
876 typedef struct tag {
877 struct tag *free; /* free list pointer */
878 struct shash *hash_ptr; /* pointer to the hash table head */
879 struct tag *same_name; /* tag with same name in outer scope */
880 struct tag *same_block; /* next tag defined in the same block. */
881 struct forward *forward_ref; /* list of forward references */
882 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
883 symint_t ifd; /* file # tag defined in */
884 localsym_t *sym; /* file's local symbols */
885 } tag_t;
886
887 /* Head of a block's linked list of tags. */
888 typedef struct thead {
889 struct thead *prev; /* previous block */
890 struct thead *free; /* free list pointer */
891 struct tag *first_tag; /* first tag in block defined */
892 } thead_t;
893
894 /* Union containing pointers to each the small structures which are freed up. */
895 typedef union small_free {
896 scope_t *f_scope; /* scope structure */
897 thead_t *f_thead; /* tag head structure */
898 tag_t *f_tag; /* tag element structure */
899 forward_t *f_forward; /* forward tag reference */
900 } small_free_t;
901
902 /* String hash table entry. */
903
904 typedef struct shash {
905 char *string; /* string we are hashing */
906 symint_t indx; /* index within string table */
907 EXTR *esym_ptr; /* global symbol pointer */
908 localsym_t *sym_ptr; /* local symbol pointer */
909 localsym_t *end_ptr; /* symbol pointer to end block */
910 tag_t *tag_ptr; /* tag pointer */
911 proc_t *proc_ptr; /* procedure descriptor pointer */
912 } shash_t;
913
914 /* Type hash table support. The size of the hash table must fit
915 within a page with the other extended file descriptor information.
916 Because unique types which are hashed are fewer in number than
917 strings, we use a smaller hash value. */
918
919 #define HASHBITS 30
920
921 #ifndef THASH_SIZE
922 #define THASH_SIZE 113
923 #endif
924
925 typedef struct thash {
926 struct thash *next; /* next hash value */
927 AUXU type; /* type we are hashing */
928 symint_t indx; /* index within string table */
929 } thash_t;
930
931 /* Extended file descriptor that contains all of the support necessary
932 to add things to each file separately. */
933 typedef struct efdr {
934 FDR fdr; /* File header to be written out */
935 FDR *orig_fdr; /* original file header */
936 char *name; /* filename */
937 int fake; /* whether this is faked .file */
938 symint_t void_type; /* aux. pointer to 'void' type */
939 symint_t int_type; /* aux. pointer to 'int' type */
940 scope_t *cur_scope; /* current nested scopes */
941 symint_t file_index; /* current file number */
942 int nested_scopes; /* # nested scopes */
943 varray_t strings; /* local strings */
944 varray_t symbols; /* local symbols */
945 varray_t procs; /* procedures */
946 varray_t aux_syms; /* auxiliary symbols */
947 struct efdr *next_file; /* next file descriptor */
948 /* string/type hash tables */
949 htab_t str_hash; /* string hash table */
950 thash_t *thash_head[THASH_SIZE];
951 } efdr_t;
952
953 /* Pre-initialized extended file structure. */
954 static const efdr_t init_file = {
955 { /* FDR structure */
956 0, /* adr: memory address of beginning of file */
957 0, /* rss: file name (of source, if known) */
958 0, /* issBase: file's string space */
959 0, /* cbSs: number of bytes in the ss */
960 0, /* isymBase: beginning of symbols */
961 0, /* csym: count file's of symbols */
962 0, /* ilineBase: file's line symbols */
963 0, /* cline: count of file's line symbols */
964 0, /* ioptBase: file's optimization entries */
965 0, /* copt: count of file's optimization entries */
966 0, /* ipdFirst: start of procedures for this file */
967 0, /* cpd: count of procedures for this file */
968 0, /* iauxBase: file's auxiliary entries */
969 0, /* caux: count of file's auxiliary entries */
970 0, /* rfdBase: index into the file indirect table */
971 0, /* crfd: count file indirect entries */
972 langC, /* lang: language for this file */
973 1, /* fMerge: whether this file can be merged */
974 0, /* fReadin: true if read in (not just created) */
975 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */
976 GLEVEL_2, /* glevel: level this file was compiled with */
977 0, /* reserved: reserved for future use */
978 0, /* cbLineOffset: byte offset from header for this file ln's */
979 0, /* cbLine: size of lines for this file */
980 },
981
982 (FDR *)0, /* orig_fdr: original file header pointer */
983 (char *)0, /* name: pointer to filename */
984 0, /* fake: whether this is a faked .file */
985 0, /* void_type: ptr to aux node for void type */
986 0, /* int_type: ptr to aux node for int type */
987 (scope_t *)0, /* cur_scope: current scope being processed */
988 0, /* file_index: current file # */
989 0, /* nested_scopes: # nested scopes */
990 INIT_VARRAY (char), /* strings: local string varray */
991 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */
992 INIT_VARRAY (proc_t), /* procs: procedure varray */
993 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */
994
995 (struct efdr *)0, /* next_file: next file structure */
996
997 (htab_t)0, /* str_hash: string hash table */
998 { 0 }, /* thash_head: type hash table */
999 };
1000
1001 static efdr_t *first_file; /* first file descriptor */
1002 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */
1003
1004 /* Line number information is kept in a list until the assembly is
1005 finished. */
1006 typedef struct lineno_list {
1007 struct lineno_list *next; /* next element in list */
1008 efdr_t *file; /* file this line is in */
1009 proc_t *proc; /* procedure this line is in */
1010 fragS *frag; /* fragment this line number is in */
1011 unsigned long paddr; /* offset within fragment */
1012 long lineno; /* actual line number */
1013 } lineno_list_t;
1014
1015 static lineno_list_t *first_lineno;
1016 static lineno_list_t *last_lineno;
1017 static lineno_list_t **last_lineno_ptr = &first_lineno;
1018
1019 /* Sometimes there will be some .loc statements before a .ent. We
1020 keep them in this list so that we can fill in the procedure pointer
1021 after we see the .ent. */
1022 static lineno_list_t *noproc_lineno;
1023
1024 /* Union of various things that are held in pages. */
1025 typedef union page {
1026 char byte [ PAGE_SIZE ];
1027 unsigned char ubyte [ PAGE_SIZE ];
1028 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ];
1029 FDR ofile [ PAGE_SIZE / sizeof (FDR) ];
1030 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ];
1031 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ];
1032 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ];
1033 DNR dense [ PAGE_SIZE / sizeof (DNR) ];
1034 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ];
1035 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ];
1036 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ];
1037 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ];
1038 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ];
1039 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ];
1040 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ];
1041 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ];
1042 } page_type;
1043
1044 /* Structure holding allocation information for small sized structures. */
1045 typedef struct alloc_info {
1046 char *alloc_name; /* name of this allocation type (must be first) */
1047 page_type *cur_page; /* current page being allocated from */
1048 small_free_t free_list; /* current free list if any */
1049 int unallocated; /* number of elements unallocated on page */
1050 int total_alloc; /* total number of allocations */
1051 int total_free; /* total number of frees */
1052 int total_pages; /* total number of pages allocated */
1053 } alloc_info_t;
1054
1055 /* Type information collected together. */
1056 typedef struct type_info {
1057 bt_t basic_type; /* basic type */
1058 int orig_type; /* original COFF-based type */
1059 int num_tq; /* # type qualifiers */
1060 int num_dims; /* # dimensions */
1061 int num_sizes; /* # sizes */
1062 int extra_sizes; /* # extra sizes not tied with dims */
1063 tag_t * tag_ptr; /* tag pointer */
1064 int bitfield; /* symbol is a bitfield */
1065 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/
1066 symint_t dimensions [N_TQ]; /* dimensions for each array */
1067 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of
1068 struct/union/enum + bitfield size */
1069 } type_info_t;
1070
1071 /* Pre-initialized type_info struct. */
1072 static const type_info_t type_info_init = {
1073 bt_Nil, /* basic type */
1074 T_NULL, /* original COFF-based type */
1075 0, /* # type qualifiers */
1076 0, /* # dimensions */
1077 0, /* # sizes */
1078 0, /* sizes not tied with dims */
1079 NULL, /* ptr to tag */
1080 0, /* bitfield */
1081 { /* type qualifiers */
1082 tq_Nil,
1083 tq_Nil,
1084 tq_Nil,
1085 tq_Nil,
1086 tq_Nil,
1087 tq_Nil,
1088 },
1089 { /* dimensions */
1090 0,
1091 0,
1092 0,
1093 0,
1094 0,
1095 0
1096 },
1097 { /* sizes */
1098 0,
1099 0,
1100 0,
1101 0,
1102 0,
1103 0,
1104 0,
1105 0,
1106 },
1107 };
1108
1109 /* Global hash table for the tags table and global table for file
1110 descriptors. */
1111
1112 static varray_t file_desc = INIT_VARRAY (efdr_t);
1113
1114 static htab_t tag_hash;
1115
1116 /* Static types for int and void. Also, remember the last function's
1117 type (which is set up when we encounter the declaration for the
1118 function, and used when the end block for the function is emitted. */
1119
1120 static type_info_t int_type_info;
1121 static type_info_t void_type_info;
1122 static type_info_t last_func_type_info;
1123 static symbolS *last_func_sym_value;
1124
1125 /* Convert COFF basic type to ECOFF basic type. The T_NULL type
1126 really should use bt_Void, but this causes the current ecoff GDB to
1127 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS
1128 2.0) doesn't understand it, even though the compiler generates it.
1129 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler
1130 suite, but for now go with what works.
1131
1132 It would make sense for the .type and .scl directives to use the
1133 ECOFF numbers directly, rather than using the COFF numbers and
1134 mapping them. Unfortunately, this is historically what mips-tfile
1135 expects, and changing gcc now would be a considerable pain (the
1136 native compiler generates debugging information internally, rather
1137 than via the assembler, so it will never use .type or .scl). */
1138
1139 static const bt_t map_coff_types[] = {
1140 bt_Nil, /* T_NULL */
1141 bt_Nil, /* T_ARG */
1142 bt_Char, /* T_CHAR */
1143 bt_Short, /* T_SHORT */
1144 bt_Int, /* T_INT */
1145 bt_Long, /* T_LONG */
1146 bt_Float, /* T_FLOAT */
1147 bt_Double, /* T_DOUBLE */
1148 bt_Struct, /* T_STRUCT */
1149 bt_Union, /* T_UNION */
1150 bt_Enum, /* T_ENUM */
1151 bt_Enum, /* T_MOE */
1152 bt_UChar, /* T_UCHAR */
1153 bt_UShort, /* T_USHORT */
1154 bt_UInt, /* T_UINT */
1155 bt_ULong /* T_ULONG */
1156 };
1157
1158 /* Convert COFF storage class to ECOFF storage class. */
1159 static const sc_t map_coff_storage[] = {
1160 sc_Nil, /* 0: C_NULL */
1161 sc_Abs, /* 1: C_AUTO auto var */
1162 sc_Undefined, /* 2: C_EXT external */
1163 sc_Data, /* 3: C_STAT static */
1164 sc_Register, /* 4: C_REG register */
1165 sc_Undefined, /* 5: C_EXTDEF ??? */
1166 sc_Text, /* 6: C_LABEL label */
1167 sc_Text, /* 7: C_ULABEL user label */
1168 sc_Info, /* 8: C_MOS member of struct */
1169 sc_Abs, /* 9: C_ARG argument */
1170 sc_Info, /* 10: C_STRTAG struct tag */
1171 sc_Info, /* 11: C_MOU member of union */
1172 sc_Info, /* 12: C_UNTAG union tag */
1173 sc_Info, /* 13: C_TPDEF typedef */
1174 sc_Data, /* 14: C_USTATIC ??? */
1175 sc_Info, /* 15: C_ENTAG enum tag */
1176 sc_Info, /* 16: C_MOE member of enum */
1177 sc_Register, /* 17: C_REGPARM register parameter */
1178 sc_Bits, /* 18; C_FIELD bitfield */
1179 sc_Nil, /* 19 */
1180 sc_Nil, /* 20 */
1181 sc_Nil, /* 21 */
1182 sc_Nil, /* 22 */
1183 sc_Nil, /* 23 */
1184 sc_Nil, /* 24 */
1185 sc_Nil, /* 25 */
1186 sc_Nil, /* 26 */
1187 sc_Nil, /* 27 */
1188 sc_Nil, /* 28 */
1189 sc_Nil, /* 29 */
1190 sc_Nil, /* 30 */
1191 sc_Nil, /* 31 */
1192 sc_Nil, /* 32 */
1193 sc_Nil, /* 33 */
1194 sc_Nil, /* 34 */
1195 sc_Nil, /* 35 */
1196 sc_Nil, /* 36 */
1197 sc_Nil, /* 37 */
1198 sc_Nil, /* 38 */
1199 sc_Nil, /* 39 */
1200 sc_Nil, /* 40 */
1201 sc_Nil, /* 41 */
1202 sc_Nil, /* 42 */
1203 sc_Nil, /* 43 */
1204 sc_Nil, /* 44 */
1205 sc_Nil, /* 45 */
1206 sc_Nil, /* 46 */
1207 sc_Nil, /* 47 */
1208 sc_Nil, /* 48 */
1209 sc_Nil, /* 49 */
1210 sc_Nil, /* 50 */
1211 sc_Nil, /* 51 */
1212 sc_Nil, /* 52 */
1213 sc_Nil, /* 53 */
1214 sc_Nil, /* 54 */
1215 sc_Nil, /* 55 */
1216 sc_Nil, /* 56 */
1217 sc_Nil, /* 57 */
1218 sc_Nil, /* 58 */
1219 sc_Nil, /* 59 */
1220 sc_Nil, /* 60 */
1221 sc_Nil, /* 61 */
1222 sc_Nil, /* 62 */
1223 sc_Nil, /* 63 */
1224 sc_Nil, /* 64 */
1225 sc_Nil, /* 65 */
1226 sc_Nil, /* 66 */
1227 sc_Nil, /* 67 */
1228 sc_Nil, /* 68 */
1229 sc_Nil, /* 69 */
1230 sc_Nil, /* 70 */
1231 sc_Nil, /* 71 */
1232 sc_Nil, /* 72 */
1233 sc_Nil, /* 73 */
1234 sc_Nil, /* 74 */
1235 sc_Nil, /* 75 */
1236 sc_Nil, /* 76 */
1237 sc_Nil, /* 77 */
1238 sc_Nil, /* 78 */
1239 sc_Nil, /* 79 */
1240 sc_Nil, /* 80 */
1241 sc_Nil, /* 81 */
1242 sc_Nil, /* 82 */
1243 sc_Nil, /* 83 */
1244 sc_Nil, /* 84 */
1245 sc_Nil, /* 85 */
1246 sc_Nil, /* 86 */
1247 sc_Nil, /* 87 */
1248 sc_Nil, /* 88 */
1249 sc_Nil, /* 89 */
1250 sc_Nil, /* 90 */
1251 sc_Nil, /* 91 */
1252 sc_Nil, /* 92 */
1253 sc_Nil, /* 93 */
1254 sc_Nil, /* 94 */
1255 sc_Nil, /* 95 */
1256 sc_Nil, /* 96 */
1257 sc_Nil, /* 97 */
1258 sc_Nil, /* 98 */
1259 sc_Nil, /* 99 */
1260 sc_Text, /* 100: C_BLOCK block start/end */
1261 sc_Text, /* 101: C_FCN function start/end */
1262 sc_Info, /* 102: C_EOS end of struct/union/enum */
1263 sc_Nil, /* 103: C_FILE file start */
1264 sc_Nil, /* 104: C_LINE line number */
1265 sc_Nil, /* 105: C_ALIAS combined type info */
1266 sc_Nil, /* 106: C_HIDDEN ??? */
1267 };
1268
1269 /* Convert COFF storage class to ECOFF symbol type. */
1270 static const st_t map_coff_sym_type[] = {
1271 st_Nil, /* 0: C_NULL */
1272 st_Local, /* 1: C_AUTO auto var */
1273 st_Global, /* 2: C_EXT external */
1274 st_Static, /* 3: C_STAT static */
1275 st_Local, /* 4: C_REG register */
1276 st_Global, /* 5: C_EXTDEF ??? */
1277 st_Label, /* 6: C_LABEL label */
1278 st_Label, /* 7: C_ULABEL user label */
1279 st_Member, /* 8: C_MOS member of struct */
1280 st_Param, /* 9: C_ARG argument */
1281 st_Block, /* 10: C_STRTAG struct tag */
1282 st_Member, /* 11: C_MOU member of union */
1283 st_Block, /* 12: C_UNTAG union tag */
1284 st_Typedef, /* 13: C_TPDEF typedef */
1285 st_Static, /* 14: C_USTATIC ??? */
1286 st_Block, /* 15: C_ENTAG enum tag */
1287 st_Member, /* 16: C_MOE member of enum */
1288 st_Param, /* 17: C_REGPARM register parameter */
1289 st_Member, /* 18; C_FIELD bitfield */
1290 st_Nil, /* 19 */
1291 st_Nil, /* 20 */
1292 st_Nil, /* 21 */
1293 st_Nil, /* 22 */
1294 st_Nil, /* 23 */
1295 st_Nil, /* 24 */
1296 st_Nil, /* 25 */
1297 st_Nil, /* 26 */
1298 st_Nil, /* 27 */
1299 st_Nil, /* 28 */
1300 st_Nil, /* 29 */
1301 st_Nil, /* 30 */
1302 st_Nil, /* 31 */
1303 st_Nil, /* 32 */
1304 st_Nil, /* 33 */
1305 st_Nil, /* 34 */
1306 st_Nil, /* 35 */
1307 st_Nil, /* 36 */
1308 st_Nil, /* 37 */
1309 st_Nil, /* 38 */
1310 st_Nil, /* 39 */
1311 st_Nil, /* 40 */
1312 st_Nil, /* 41 */
1313 st_Nil, /* 42 */
1314 st_Nil, /* 43 */
1315 st_Nil, /* 44 */
1316 st_Nil, /* 45 */
1317 st_Nil, /* 46 */
1318 st_Nil, /* 47 */
1319 st_Nil, /* 48 */
1320 st_Nil, /* 49 */
1321 st_Nil, /* 50 */
1322 st_Nil, /* 51 */
1323 st_Nil, /* 52 */
1324 st_Nil, /* 53 */
1325 st_Nil, /* 54 */
1326 st_Nil, /* 55 */
1327 st_Nil, /* 56 */
1328 st_Nil, /* 57 */
1329 st_Nil, /* 58 */
1330 st_Nil, /* 59 */
1331 st_Nil, /* 60 */
1332 st_Nil, /* 61 */
1333 st_Nil, /* 62 */
1334 st_Nil, /* 63 */
1335 st_Nil, /* 64 */
1336 st_Nil, /* 65 */
1337 st_Nil, /* 66 */
1338 st_Nil, /* 67 */
1339 st_Nil, /* 68 */
1340 st_Nil, /* 69 */
1341 st_Nil, /* 70 */
1342 st_Nil, /* 71 */
1343 st_Nil, /* 72 */
1344 st_Nil, /* 73 */
1345 st_Nil, /* 74 */
1346 st_Nil, /* 75 */
1347 st_Nil, /* 76 */
1348 st_Nil, /* 77 */
1349 st_Nil, /* 78 */
1350 st_Nil, /* 79 */
1351 st_Nil, /* 80 */
1352 st_Nil, /* 81 */
1353 st_Nil, /* 82 */
1354 st_Nil, /* 83 */
1355 st_Nil, /* 84 */
1356 st_Nil, /* 85 */
1357 st_Nil, /* 86 */
1358 st_Nil, /* 87 */
1359 st_Nil, /* 88 */
1360 st_Nil, /* 89 */
1361 st_Nil, /* 90 */
1362 st_Nil, /* 91 */
1363 st_Nil, /* 92 */
1364 st_Nil, /* 93 */
1365 st_Nil, /* 94 */
1366 st_Nil, /* 95 */
1367 st_Nil, /* 96 */
1368 st_Nil, /* 97 */
1369 st_Nil, /* 98 */
1370 st_Nil, /* 99 */
1371 st_Block, /* 100: C_BLOCK block start/end */
1372 st_Proc, /* 101: C_FCN function start/end */
1373 st_End, /* 102: C_EOS end of struct/union/enum */
1374 st_File, /* 103: C_FILE file start */
1375 st_Nil, /* 104: C_LINE line number */
1376 st_Nil, /* 105: C_ALIAS combined type info */
1377 st_Nil, /* 106: C_HIDDEN ??? */
1378 };
1379
1380 /* Keep track of different sized allocation requests. */
1381 static alloc_info_t alloc_counts[(int) alloc_type_last];
1382 \f
1383 /* Record whether we have seen any debugging information. */
1384 int ecoff_debugging_seen = 0;
1385
1386 /* Various statics. */
1387 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */
1388 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */
1389 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */
1390 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */
1391 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */
1392 #ifdef ECOFF_DEBUG
1393 static int debug = 0; /* trace functions */
1394 #endif
1395 static int stabs_seen = 0; /* != 0 if stabs have been seen */
1396
1397 static int current_file_idx;
1398 static const char *current_stabs_filename;
1399
1400 /* Pseudo symbol to use when putting stabs into the symbol table. */
1401 #ifndef STABS_SYMBOL
1402 #define STABS_SYMBOL "@stabs"
1403 #endif
1404
1405 static char stabs_symbol[] = STABS_SYMBOL;
1406 \f
1407 /* Prototypes for functions defined in this file. */
1408
1409 static void add_varray_page (varray_t *vp);
1410 static symint_t add_string (varray_t *vp,
1411 htab_t hash_tbl,
1412 const char *str,
1413 shash_t **ret_hash);
1414 static localsym_t *add_ecoff_symbol (const char *str, st_t type,
1415 sc_t storage, symbolS *sym,
1416 bfd_vma addend, symint_t value,
1417 symint_t indx);
1418 static symint_t add_aux_sym_symint (symint_t aux_word);
1419 static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index);
1420 static symint_t add_aux_sym_tir (type_info_t *t,
1421 hash_state_t state,
1422 thash_t **hash_tbl);
1423 static tag_t *get_tag (const char *tag, localsym_t *sym, bt_t basic_type);
1424 static void add_unknown_tag (tag_t *ptag);
1425 static void add_procedure (char *func, int aent);
1426 static void add_file (const char *file_name, int indx, int fake);
1427 #ifdef ECOFF_DEBUG
1428 static char *sc_to_string (sc_t storage_class);
1429 static char *st_to_string (st_t symbol_type);
1430 #endif
1431 static void mark_stabs (int);
1432 static char *ecoff_add_bytes (char **buf, char **bufend,
1433 char *bufptr, unsigned long need);
1434 static unsigned long ecoff_padding_adjust
1435 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1436 unsigned long offset, char **bufptrptr);
1437 static unsigned long ecoff_build_lineno
1438 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1439 unsigned long offset, long *linecntptr);
1440 static unsigned long ecoff_build_symbols
1441 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1442 unsigned long offset);
1443 static unsigned long ecoff_build_procs
1444 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1445 unsigned long offset);
1446 static unsigned long ecoff_build_aux
1447 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1448 unsigned long offset);
1449 static unsigned long ecoff_build_strings (char **buf, char **bufend,
1450 unsigned long offset,
1451 varray_t *vp);
1452 static unsigned long ecoff_build_ss
1453 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1454 unsigned long offset);
1455 static unsigned long ecoff_build_fdr
1456 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1457 unsigned long offset);
1458 static void ecoff_setup_ext (void);
1459 static page_type *allocate_cluster (unsigned long npages);
1460 static page_type *allocate_page (void);
1461 static scope_t *allocate_scope (void);
1462 static void free_scope (scope_t *ptr);
1463 static vlinks_t *allocate_vlinks (void);
1464 static shash_t *allocate_shash (void);
1465 static thash_t *allocate_thash (void);
1466 static tag_t *allocate_tag (void);
1467 static void free_tag (tag_t *ptr);
1468 static forward_t *allocate_forward (void);
1469 static thead_t *allocate_thead (void);
1470 static void free_thead (thead_t *ptr);
1471 static lineno_list_t *allocate_lineno_list (void);
1472 \f
1473 /* This function should be called when the assembler starts up. */
1474
1475 void
1476 ecoff_read_begin_hook (void)
1477 {
1478 tag_hash = str_htab_create ();
1479 top_tag_head = allocate_thead ();
1480 top_tag_head->first_tag = (tag_t *) NULL;
1481 top_tag_head->free = (thead_t *) NULL;
1482 top_tag_head->prev = cur_tag_head;
1483 cur_tag_head = top_tag_head;
1484 }
1485
1486 /* This function should be called when a symbol is created. */
1487
1488 void
1489 ecoff_symbol_new_hook (symbolS *symbolP)
1490 {
1491 OBJ_SYMFIELD_TYPE *obj;
1492
1493 /* Make sure that we have a file pointer, but only if we have seen a
1494 file. If we haven't seen a file, then this is a probably special
1495 symbol created by md_begin which may required special handling at
1496 some point. Creating a dummy file with a dummy name is certainly
1497 wrong. */
1498 if (cur_file_ptr == (efdr_t *) NULL
1499 && seen_at_least_1_file ())
1500 add_file ((const char *) NULL, 0, 1);
1501 obj = symbol_get_obj (symbolP);
1502 obj->ecoff_file = cur_file_ptr;
1503 obj->ecoff_symbol = NULL;
1504 obj->ecoff_extern_size = 0;
1505 }
1506
1507 void
1508 ecoff_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP)
1509 {
1510 OBJ_SYMFIELD_TYPE *n, *o;
1511
1512 n = symbol_get_obj (newsymP);
1513 o = symbol_get_obj (orgsymP);
1514 memcpy (n, o, sizeof *n);
1515 }
1516 \f
1517 /* Add a page to a varray object. */
1518
1519 static void
1520 add_varray_page (varray_t *vp /* varray to add page to */)
1521 {
1522 vlinks_t *new_links = allocate_vlinks ();
1523
1524 #ifdef MALLOC_CHECK
1525 if (vp->object_size > 1)
1526 new_links->datum = (page_type *) xcalloc (1, vp->object_size);
1527 else
1528 #endif
1529 new_links->datum = allocate_page ();
1530
1531 alloc_counts[(int) alloc_type_varray].total_alloc++;
1532 alloc_counts[(int) alloc_type_varray].total_pages++;
1533
1534 new_links->start_index = vp->num_allocated;
1535 vp->objects_last_page = 0;
1536
1537 if (vp->first == (vlinks_t *) NULL) /* first allocation? */
1538 vp->first = vp->last = new_links;
1539 else
1540 { /* 2nd or greater allocation */
1541 new_links->prev = vp->last;
1542 vp->last->next = new_links;
1543 vp->last = new_links;
1544 }
1545 }
1546 \f
1547 /* Add a string (and null pad) to one of the string tables. */
1548
1549 static symint_t
1550 add_string (varray_t *vp, /* string obstack */
1551 htab_t hash_tbl, /* ptr to hash table */
1552 const char *str, /* string */
1553 shash_t **ret_hash /* return hash pointer */)
1554 {
1555 unsigned long len = strlen (str);
1556 shash_t *hash_ptr;
1557
1558 if (len >= PAGE_USIZE)
1559 as_fatal (_("string too big (%lu bytes)"), len);
1560
1561 hash_ptr = (shash_t *) str_hash_find (hash_tbl, str);
1562 if (hash_ptr == (shash_t *) NULL)
1563 {
1564 if (vp->objects_last_page + len >= PAGE_USIZE)
1565 {
1566 vp->num_allocated =
1567 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE;
1568 add_varray_page (vp);
1569 }
1570
1571 hash_ptr = allocate_shash ();
1572 hash_ptr->indx = vp->num_allocated;
1573
1574 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page];
1575
1576 vp->objects_last_page += len + 1;
1577 vp->num_allocated += len + 1;
1578
1579 strcpy (hash_ptr->string, str);
1580
1581 if (str_hash_insert (hash_tbl, str, hash_ptr, 0) != NULL)
1582 as_fatal (_("duplicate %s"), str);
1583 }
1584
1585 if (ret_hash != (shash_t **) NULL)
1586 *ret_hash = hash_ptr;
1587
1588 return hash_ptr->indx;
1589 }
1590 \f
1591 /* Add debugging information for a symbol. */
1592
1593 static localsym_t *
1594 add_ecoff_symbol (const char *str, /* symbol name */
1595 st_t type, /* symbol type */
1596 sc_t storage, /* storage class */
1597 symbolS *sym_value, /* associated symbol. */
1598 bfd_vma addend, /* addend to sym_value. */
1599 symint_t value, /* value of symbol */
1600 symint_t indx /* index to local/aux. syms */)
1601 {
1602 localsym_t *psym;
1603 scope_t *pscope;
1604 thead_t *ptag_head;
1605 tag_t *ptag;
1606 tag_t *ptag_next;
1607 varray_t *vp;
1608 int scope_delta = 0;
1609 shash_t *hash_ptr = (shash_t *) NULL;
1610
1611 if (cur_file_ptr == (efdr_t *) NULL)
1612 as_fatal (_("no current file pointer"));
1613
1614 vp = &cur_file_ptr->symbols;
1615
1616 if (vp->objects_last_page == vp->objects_per_page)
1617 add_varray_page (vp);
1618
1619 psym = &vp->last->datum->sym[vp->objects_last_page++];
1620
1621 if (str == (const char *) NULL && sym_value != (symbolS *) NULL)
1622 psym->name = S_GET_NAME (sym_value);
1623 else
1624 psym->name = str;
1625 psym->as_sym = sym_value;
1626 if (sym_value != (symbolS *) NULL)
1627 symbol_get_obj (sym_value)->ecoff_symbol = psym;
1628 psym->addend = addend;
1629 psym->file_ptr = cur_file_ptr;
1630 psym->proc_ptr = cur_proc_ptr;
1631 psym->begin_ptr = (localsym_t *) NULL;
1632 psym->index_ptr = (aux_t *) NULL;
1633 psym->forward_ref = (forward_t *) NULL;
1634 psym->sym_index = -1;
1635 memset (&psym->ecoff_sym, 0, sizeof (EXTR));
1636 psym->ecoff_sym.asym.value = value;
1637 psym->ecoff_sym.asym.st = (unsigned) type;
1638 psym->ecoff_sym.asym.sc = (unsigned) storage;
1639 psym->ecoff_sym.asym.index = indx;
1640
1641 /* If there is an associated symbol, we wait until the end of the
1642 assembly before deciding where to put the name (it may be just an
1643 external symbol). Otherwise, this is just a debugging symbol and
1644 the name should go with the current file. */
1645 if (sym_value == (symbolS *) NULL)
1646 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL)
1647 ? 0
1648 : add_string (&cur_file_ptr->strings,
1649 cur_file_ptr->str_hash,
1650 str,
1651 &hash_ptr));
1652
1653 ++vp->num_allocated;
1654
1655 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym))
1656 return psym;
1657
1658 /* Save the symbol within the hash table if this is a static
1659 item, and it has a name. */
1660 if (hash_ptr != (shash_t *) NULL
1661 && (type == st_Global || type == st_Static || type == st_Label
1662 || type == st_Proc || type == st_StaticProc))
1663 hash_ptr->sym_ptr = psym;
1664
1665 /* push or pop a scope if appropriate. */
1666 switch (type)
1667 {
1668 default:
1669 break;
1670
1671 case st_File: /* beginning of file */
1672 case st_Proc: /* procedure */
1673 case st_StaticProc: /* static procedure */
1674 case st_Block: /* begin scope */
1675 pscope = allocate_scope ();
1676 pscope->prev = cur_file_ptr->cur_scope;
1677 pscope->lsym = psym;
1678 pscope->type = type;
1679 cur_file_ptr->cur_scope = pscope;
1680
1681 if (type != st_File)
1682 scope_delta = 1;
1683
1684 /* For every block type except file, struct, union, or
1685 enumeration blocks, push a level on the tag stack. We omit
1686 file types, so that tags can span file boundaries. */
1687 if (type != st_File && storage != sc_Info)
1688 {
1689 ptag_head = allocate_thead ();
1690 ptag_head->first_tag = 0;
1691 ptag_head->prev = cur_tag_head;
1692 cur_tag_head = ptag_head;
1693 }
1694 break;
1695
1696 case st_End:
1697 pscope = cur_file_ptr->cur_scope;
1698 if (pscope == (scope_t *) NULL)
1699 as_fatal (_("too many st_End's"));
1700 else
1701 {
1702 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st;
1703
1704 psym->begin_ptr = pscope->lsym;
1705
1706 if (begin_type != st_File)
1707 scope_delta = -1;
1708
1709 /* Except for file, structure, union, or enumeration end
1710 blocks remove all tags created within this scope. */
1711 if (begin_type != st_File && storage != sc_Info)
1712 {
1713 ptag_head = cur_tag_head;
1714 cur_tag_head = ptag_head->prev;
1715
1716 for (ptag = ptag_head->first_tag;
1717 ptag != (tag_t *) NULL;
1718 ptag = ptag_next)
1719 {
1720 if (ptag->forward_ref != (forward_t *) NULL)
1721 add_unknown_tag (ptag);
1722
1723 ptag_next = ptag->same_block;
1724 ptag->hash_ptr->tag_ptr = ptag->same_name;
1725 free_tag (ptag);
1726 }
1727
1728 free_thead (ptag_head);
1729 }
1730
1731 cur_file_ptr->cur_scope = pscope->prev;
1732
1733 /* block begin gets next sym #. This is set when we know
1734 the symbol index value. */
1735
1736 /* Functions push two or more aux words as follows:
1737 1st word: index+1 of the end symbol (filled in later).
1738 2nd word: type of the function (plus any aux words needed).
1739 Also, tie the external pointer back to the function begin symbol. */
1740 if (begin_type != st_File && begin_type != st_Block)
1741 {
1742 symint_t ty;
1743 varray_t *svp = &cur_file_ptr->aux_syms;
1744
1745 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0);
1746 pscope->lsym->index_ptr =
1747 &svp->last->datum->aux[svp->objects_last_page - 1];
1748 ty = add_aux_sym_tir (&last_func_type_info,
1749 hash_no,
1750 &cur_file_ptr->thash_head[0]);
1751 (void) ty;
1752 /* This seems to be unnecessary. I'm not even sure what it is
1753 * intended to do. It's from mips-tfile.
1754 * if (last_func_sym_value != (symbolS *) NULL)
1755 * {
1756 * last_func_sym_value->ifd = cur_file_ptr->file_index;
1757 * last_func_sym_value->index = ty;
1758 * }
1759 */
1760 }
1761
1762 free_scope (pscope);
1763 }
1764 }
1765
1766 cur_file_ptr->nested_scopes += scope_delta;
1767
1768 #ifdef ECOFF_DEBUG
1769 if (debug && type != st_File
1770 && (debug > 2 || type == st_Block || type == st_End
1771 || type == st_Proc || type == st_StaticProc))
1772 {
1773 char *sc_str = sc_to_string (storage);
1774 char *st_str = st_to_string (type);
1775 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0);
1776
1777 fprintf (stderr,
1778 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s",
1779 value, depth, sc_str);
1780
1781 if (str_start && str_end_p1 - str_start > 0)
1782 fprintf (stderr, " st= %-11s name= %.*s\n",
1783 st_str, str_end_p1 - str_start, str_start);
1784 else
1785 {
1786 unsigned long len = strlen (st_str);
1787 fprintf (stderr, " st= %.*s\n", len - 1, st_str);
1788 }
1789 }
1790 #endif
1791
1792 return psym;
1793 }
1794 \f
1795 /* Add an auxiliary symbol (passing a symint). This is actually used
1796 for integral aux types, not just symints. */
1797
1798 static symint_t
1799 add_aux_sym_symint (symint_t aux_word /* auxiliary information word */)
1800 {
1801 varray_t *vp;
1802 aux_t *aux_ptr;
1803
1804 if (cur_file_ptr == (efdr_t *) NULL)
1805 as_fatal (_("no current file pointer"));
1806
1807 vp = &cur_file_ptr->aux_syms;
1808
1809 if (vp->objects_last_page == vp->objects_per_page)
1810 add_varray_page (vp);
1811
1812 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1813 aux_ptr->type = aux_isym;
1814 aux_ptr->data.isym = aux_word;
1815
1816 return vp->num_allocated++;
1817 }
1818
1819 /* Add an auxiliary symbol (passing a file/symbol index combo). */
1820
1821 static symint_t
1822 add_aux_sym_rndx (int file_index, symint_t sym_index)
1823 {
1824 varray_t *vp;
1825 aux_t *aux_ptr;
1826
1827 if (cur_file_ptr == (efdr_t *) NULL)
1828 as_fatal (_("no current file pointer"));
1829
1830 vp = &cur_file_ptr->aux_syms;
1831
1832 if (vp->objects_last_page == vp->objects_per_page)
1833 add_varray_page (vp);
1834
1835 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1836 aux_ptr->type = aux_rndx;
1837 aux_ptr->data.rndx.rfd = file_index;
1838 aux_ptr->data.rndx.index = sym_index;
1839
1840 return vp->num_allocated++;
1841 }
1842 \f
1843 /* Add an auxiliary symbol (passing the basic type and possibly
1844 type qualifiers). */
1845
1846 static symint_t
1847 add_aux_sym_tir (type_info_t *t, /* current type information */
1848 hash_state_t state, /* whether to hash type or not */
1849 thash_t **hash_tbl /* pointer to hash table to use */)
1850 {
1851 varray_t *vp;
1852 aux_t *aux_ptr;
1853 symint_t ret;
1854 int i;
1855 AUXU aux;
1856
1857 if (cur_file_ptr == (efdr_t *) NULL)
1858 as_fatal (_("no current file pointer"));
1859
1860 vp = &cur_file_ptr->aux_syms;
1861
1862 memset (&aux, 0, sizeof (aux));
1863 aux.ti.bt = (int) t->basic_type;
1864 aux.ti.continued = 0;
1865 aux.ti.fBitfield = t->bitfield;
1866
1867 aux.ti.tq0 = (int) t->type_qualifiers[0];
1868 aux.ti.tq1 = (int) t->type_qualifiers[1];
1869 aux.ti.tq2 = (int) t->type_qualifiers[2];
1870 aux.ti.tq3 = (int) t->type_qualifiers[3];
1871 aux.ti.tq4 = (int) t->type_qualifiers[4];
1872 aux.ti.tq5 = (int) t->type_qualifiers[5];
1873
1874 /* For anything that adds additional information, we must not hash,
1875 so check here, and reset our state. */
1876
1877 if (state != hash_no
1878 && (t->type_qualifiers[0] == tq_Array
1879 || t->type_qualifiers[1] == tq_Array
1880 || t->type_qualifiers[2] == tq_Array
1881 || t->type_qualifiers[3] == tq_Array
1882 || t->type_qualifiers[4] == tq_Array
1883 || t->type_qualifiers[5] == tq_Array
1884 || t->basic_type == bt_Struct
1885 || t->basic_type == bt_Union
1886 || t->basic_type == bt_Enum
1887 || t->bitfield
1888 || t->num_dims > 0))
1889 state = hash_no;
1890
1891 /* See if we can hash this type, and save some space, but some types
1892 can't be hashed (because they contain arrays or continuations),
1893 and others can be put into the hash list, but cannot use existing
1894 types because other aux entries precede this one. */
1895
1896 if (state != hash_no)
1897 {
1898 thash_t *hash_ptr;
1899 symint_t hi;
1900
1901 hi = aux.isym & ((1 << HASHBITS) - 1);
1902 hi %= THASH_SIZE;
1903
1904 for (hash_ptr = hash_tbl[hi];
1905 hash_ptr != (thash_t *)0;
1906 hash_ptr = hash_ptr->next)
1907 {
1908 if (aux.isym == hash_ptr->type.isym)
1909 break;
1910 }
1911
1912 if (hash_ptr != (thash_t *) NULL && state == hash_yes)
1913 return hash_ptr->indx;
1914
1915 if (hash_ptr == (thash_t *) NULL)
1916 {
1917 hash_ptr = allocate_thash ();
1918 hash_ptr->next = hash_tbl[hi];
1919 hash_ptr->type = aux;
1920 hash_ptr->indx = vp->num_allocated;
1921 hash_tbl[hi] = hash_ptr;
1922 }
1923 }
1924
1925 /* Everything is set up, add the aux symbol. */
1926 if (vp->objects_last_page == vp->objects_per_page)
1927 add_varray_page (vp);
1928
1929 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1930 aux_ptr->type = aux_tir;
1931 aux_ptr->data = aux;
1932
1933 ret = vp->num_allocated++;
1934
1935 /* Add bitfield length if it exists.
1936
1937 NOTE: Mips documentation claims bitfield goes at the end of the
1938 AUX record, but the DECstation compiler emits it here.
1939 (This would only make a difference for enum bitfields.)
1940
1941 Also note: We use the last size given since gcc may emit 2
1942 for an enum bitfield. */
1943
1944 if (t->bitfield)
1945 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]);
1946
1947 /* Add tag information if needed. Structure, union, and enum
1948 references add 2 aux symbols: a [file index, symbol index]
1949 pointer to the structure type, and the current file index. */
1950
1951 if (t->basic_type == bt_Struct
1952 || t->basic_type == bt_Union
1953 || t->basic_type == bt_Enum)
1954 {
1955 symint_t file_index = t->tag_ptr->ifd;
1956 localsym_t *sym = t->tag_ptr->sym;
1957 forward_t *forward_ref = allocate_forward ();
1958
1959 if (sym != (localsym_t *) NULL)
1960 {
1961 forward_ref->next = sym->forward_ref;
1962 sym->forward_ref = forward_ref;
1963 }
1964 else
1965 {
1966 forward_ref->next = t->tag_ptr->forward_ref;
1967 t->tag_ptr->forward_ref = forward_ref;
1968 }
1969
1970 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil);
1971 forward_ref->index_ptr
1972 = &vp->last->datum->aux[vp->objects_last_page - 1];
1973
1974 (void) add_aux_sym_symint (file_index);
1975 forward_ref->ifd_ptr
1976 = &vp->last->datum->aux[vp->objects_last_page - 1];
1977 }
1978
1979 /* Add information about array bounds if they exist. */
1980 for (i = 0; i < t->num_dims; i++)
1981 {
1982 (void) add_aux_sym_rndx (ST_RFDESCAPE,
1983 cur_file_ptr->int_type);
1984
1985 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/
1986 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */
1987 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/
1988 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */
1989 ? 0
1990 : (t->sizes[i] * 8) / t->dimensions[i]);
1991 };
1992
1993 /* NOTE: Mips documentation claims that the bitfield width goes here.
1994 But it needs to be emitted earlier. */
1995
1996 return ret;
1997 }
1998 \f
1999 /* Add a tag to the tag table (unless it already exists). */
2000
2001 static tag_t *
2002 get_tag (const char *tag, /* tag name */
2003 localsym_t *sym, /* tag start block */
2004 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */)
2005 {
2006 shash_t *hash_ptr;
2007 tag_t *tag_ptr;
2008
2009 if (cur_file_ptr == (efdr_t *) NULL)
2010 as_fatal (_("no current file pointer"));
2011
2012 hash_ptr = (shash_t *) str_hash_find (tag_hash, tag);
2013
2014 if (hash_ptr != (shash_t *) NULL
2015 && hash_ptr->tag_ptr != (tag_t *) NULL)
2016 {
2017 tag_ptr = hash_ptr->tag_ptr;
2018 if (sym != (localsym_t *) NULL)
2019 {
2020 tag_ptr->basic_type = basic_type;
2021 tag_ptr->ifd = cur_file_ptr->file_index;
2022 tag_ptr->sym = sym;
2023 }
2024 return tag_ptr;
2025 }
2026
2027 if (hash_ptr == (shash_t *) NULL)
2028 {
2029 char *perm;
2030
2031 perm = xstrdup (tag);
2032 hash_ptr = allocate_shash ();
2033 str_hash_insert (tag_hash, perm, hash_ptr, 0);
2034 hash_ptr->string = perm;
2035 }
2036
2037 tag_ptr = allocate_tag ();
2038 tag_ptr->forward_ref = (forward_t *) NULL;
2039 tag_ptr->hash_ptr = hash_ptr;
2040 tag_ptr->same_name = hash_ptr->tag_ptr;
2041 tag_ptr->basic_type = basic_type;
2042 tag_ptr->sym = sym;
2043 tag_ptr->ifd = ((sym == (localsym_t *) NULL)
2044 ? (symint_t) -1
2045 : cur_file_ptr->file_index);
2046 tag_ptr->same_block = cur_tag_head->first_tag;
2047
2048 cur_tag_head->first_tag = tag_ptr;
2049 hash_ptr->tag_ptr = tag_ptr;
2050
2051 return tag_ptr;
2052 }
2053 \f
2054 /* Add an unknown {struct, union, enum} tag. */
2055
2056 static void
2057 add_unknown_tag (tag_t *ptag /* pointer to tag information */)
2058 {
2059 shash_t *hash_ptr = ptag->hash_ptr;
2060 char *name = hash_ptr->string;
2061 localsym_t *sym;
2062 forward_t **pf;
2063
2064 #ifdef ECOFF_DEBUG
2065 if (debug > 1)
2066 {
2067 char *agg_type = "{unknown aggregate type}";
2068 switch (ptag->basic_type)
2069 {
2070 case bt_Struct: agg_type = "struct"; break;
2071 case bt_Union: agg_type = "union"; break;
2072 case bt_Enum: agg_type = "enum"; break;
2073 default: break;
2074 }
2075
2076 fprintf (stderr, "unknown %s %.*s found\n", agg_type,
2077 hash_ptr->len, name_start);
2078 }
2079 #endif
2080
2081 sym = add_ecoff_symbol (name,
2082 st_Block,
2083 sc_Info,
2084 (symbolS *) NULL,
2085 (bfd_vma) 0,
2086 (symint_t) 0,
2087 (symint_t) 0);
2088
2089 (void) add_ecoff_symbol (name,
2090 st_End,
2091 sc_Info,
2092 (symbolS *) NULL,
2093 (bfd_vma) 0,
2094 (symint_t) 0,
2095 (symint_t) 0);
2096
2097 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next)
2098 ;
2099 *pf = ptag->forward_ref;
2100 }
2101 \f
2102 /* Add a procedure to the current file's list of procedures, and record
2103 this is the current procedure. If AENT, then only set the requested
2104 symbol's function type. */
2105
2106 static void
2107 add_procedure (char *func /* func name */, int aent)
2108 {
2109 varray_t *vp;
2110 proc_t *new_proc_ptr;
2111 symbolS *sym;
2112
2113 #ifdef ECOFF_DEBUG
2114 if (debug)
2115 fputc ('\n', stderr);
2116 #endif
2117
2118 /* Set the BSF_FUNCTION flag for the symbol. */
2119 sym = symbol_find_or_make (func);
2120 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION;
2121
2122 if (aent)
2123 return;
2124
2125 if (cur_file_ptr == (efdr_t *) NULL)
2126 as_fatal (_("no current file pointer"));
2127
2128 vp = &cur_file_ptr->procs;
2129
2130 if (vp->objects_last_page == vp->objects_per_page)
2131 add_varray_page (vp);
2132
2133 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++];
2134
2135 if (first_proc_ptr == (proc_t *) NULL)
2136 first_proc_ptr = new_proc_ptr;
2137
2138 vp->num_allocated++;
2139
2140 new_proc_ptr->pdr.isym = -1;
2141 new_proc_ptr->pdr.iline = -1;
2142 new_proc_ptr->pdr.lnLow = -1;
2143 new_proc_ptr->pdr.lnHigh = -1;
2144
2145 /* Push the start of the function. */
2146 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text,
2147 sym, (bfd_vma) 0, (symint_t) 0,
2148 (symint_t) 0);
2149
2150 ++proc_cnt;
2151
2152 /* Fill in the linenos preceding the .ent, if any. */
2153 if (noproc_lineno != (lineno_list_t *) NULL)
2154 {
2155 lineno_list_t *l;
2156
2157 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next)
2158 l->proc = new_proc_ptr;
2159 *last_lineno_ptr = noproc_lineno;
2160 while (*last_lineno_ptr != NULL)
2161 {
2162 last_lineno = *last_lineno_ptr;
2163 last_lineno_ptr = &last_lineno->next;
2164 }
2165 noproc_lineno = (lineno_list_t *) NULL;
2166 }
2167 }
2168
2169 symbolS *
2170 ecoff_get_cur_proc_sym (void)
2171 {
2172 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL);
2173 }
2174 \f
2175 /* Add a new filename, and set up all of the file relative
2176 virtual arrays (strings, symbols, aux syms, etc.). Record
2177 where the current file structure lives. */
2178
2179 static void
2180 add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake)
2181 {
2182 int first_ch;
2183 efdr_t *fil_ptr;
2184
2185 #ifdef ECOFF_DEBUG
2186 if (debug)
2187 fprintf (stderr, "\tfile\t%.*s\n", len, file_start);
2188 #endif
2189
2190 /* If the file name is NULL, then no .file symbol appeared, and we
2191 want to use the actual file name. */
2192 if (file_name == (const char *) NULL)
2193 {
2194 if (first_file != (efdr_t *) NULL)
2195 as_fatal (_("fake .file after real one"));
2196 file_name = as_where ((unsigned int *) NULL);
2197
2198 /* Automatically generate ECOFF debugging information, since I
2199 think that's what other ECOFF assemblers do. We don't do
2200 this if we see a .file directive with a string, since that
2201 implies that some sort of debugging information is being
2202 provided. */
2203 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED)
2204 debug_type = DEBUG_ECOFF;
2205 }
2206 else if (debug_type == DEBUG_UNSPECIFIED)
2207 debug_type = DEBUG_NONE;
2208
2209 #ifndef NO_LISTING
2210 if (listing)
2211 listing_source_file (file_name);
2212 #endif
2213
2214 current_stabs_filename = file_name;
2215
2216 /* If we're creating stabs, then we don't actually make a new FDR.
2217 Instead, we just create a stabs symbol. */
2218 if (stabs_seen)
2219 {
2220 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2221 symbol_new (FAKE_LABEL_NAME, now_seg,
2222 frag_now, frag_now_fix ()),
2223 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL));
2224 return;
2225 }
2226
2227 first_ch = *file_name;
2228
2229 /* FIXME: We can't safely merge files which have line number
2230 information (fMerge will be zero in this case). Otherwise, we
2231 get incorrect line number debugging info. See for instance
2232 ecoff_build_lineno, which will end up setting all file->fdr.*
2233 fields multiple times, resulting in incorrect debug info. In
2234 order to make this work right, all line number and symbol info
2235 for the same source file has to be adjacent in the object file,
2236 so that a single file descriptor can be used to point to them.
2237 This would require maintaining file specific lists of line
2238 numbers and symbols for each file, so that they can be merged
2239 together (or output together) when two .file pseudo-ops are
2240 merged into one file descriptor. */
2241
2242 /* See if the file has already been created. */
2243 for (fil_ptr = first_file;
2244 fil_ptr != (efdr_t *) NULL;
2245 fil_ptr = fil_ptr->next_file)
2246 {
2247 if (first_ch == fil_ptr->name[0]
2248 && filename_cmp (file_name, fil_ptr->name) == 0
2249 && fil_ptr->fdr.fMerge)
2250 {
2251 cur_file_ptr = fil_ptr;
2252 if (! fake)
2253 cur_file_ptr->fake = 0;
2254 break;
2255 }
2256 }
2257
2258 /* If this is a new file, create it. */
2259 if (fil_ptr == (efdr_t *) NULL)
2260 {
2261 if (file_desc.objects_last_page == file_desc.objects_per_page)
2262 add_varray_page (&file_desc);
2263
2264 fil_ptr = cur_file_ptr =
2265 &file_desc.last->datum->file[file_desc.objects_last_page++];
2266 *fil_ptr = init_file;
2267
2268 fil_ptr->file_index = current_file_idx++;
2269 ++file_desc.num_allocated;
2270
2271 fil_ptr->fake = fake;
2272
2273 /* Allocate the string hash table. */
2274 fil_ptr->str_hash = str_htab_create ();
2275
2276 /* Make sure 0 byte in string table is null */
2277 add_string (&fil_ptr->strings,
2278 fil_ptr->str_hash,
2279 "",
2280 (shash_t **)0);
2281
2282 if (strlen (file_name) > PAGE_USIZE - 2)
2283 as_fatal (_("filename goes over one page boundary"));
2284
2285 /* Push the start of the filename. We assume that the filename
2286 will be stored at string offset 1. */
2287 (void) add_ecoff_symbol (file_name, st_File, sc_Text,
2288 (symbolS *) NULL, (bfd_vma) 0,
2289 (symint_t) 0, (symint_t) 0);
2290 fil_ptr->fdr.rss = 1;
2291 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1];
2292
2293 /* Update the linked list of file descriptors. */
2294 *last_file_ptr = fil_ptr;
2295 last_file_ptr = &fil_ptr->next_file;
2296
2297 /* Add void & int types to the file (void should be first to catch
2298 errant 0's within the index fields). */
2299 fil_ptr->void_type = add_aux_sym_tir (&void_type_info,
2300 hash_yes,
2301 &cur_file_ptr->thash_head[0]);
2302
2303 fil_ptr->int_type = add_aux_sym_tir (&int_type_info,
2304 hash_yes,
2305 &cur_file_ptr->thash_head[0]);
2306 }
2307 }
2308
2309 /* This function is called when the assembler notices a preprocessor
2310 directive switching to a new file. This will not happen in
2311 compiler output, only in hand coded assembler. */
2312
2313 void
2314 ecoff_new_file (const char *name)
2315 {
2316 if (cur_file_ptr != NULL && filename_cmp (cur_file_ptr->name, name) == 0)
2317 return;
2318 add_file (name, 0, 0);
2319
2320 /* This is a hand coded assembler file, so automatically turn on
2321 debugging information. */
2322 if (debug_type == DEBUG_UNSPECIFIED)
2323 debug_type = DEBUG_ECOFF;
2324 }
2325 \f
2326 #ifdef ECOFF_DEBUG
2327
2328 /* Convert storage class to string. */
2329
2330 static char *
2331 sc_to_string (storage_class)
2332 sc_t storage_class;
2333 {
2334 switch (storage_class)
2335 {
2336 case sc_Nil: return "Nil,";
2337 case sc_Text: return "Text,";
2338 case sc_Data: return "Data,";
2339 case sc_Bss: return "Bss,";
2340 case sc_Register: return "Register,";
2341 case sc_Abs: return "Abs,";
2342 case sc_Undefined: return "Undefined,";
2343 case sc_CdbLocal: return "CdbLocal,";
2344 case sc_Bits: return "Bits,";
2345 case sc_CdbSystem: return "CdbSystem,";
2346 case sc_RegImage: return "RegImage,";
2347 case sc_Info: return "Info,";
2348 case sc_UserStruct: return "UserStruct,";
2349 case sc_SData: return "SData,";
2350 case sc_SBss: return "SBss,";
2351 case sc_RData: return "RData,";
2352 case sc_Var: return "Var,";
2353 case sc_Common: return "Common,";
2354 case sc_SCommon: return "SCommon,";
2355 case sc_VarRegister: return "VarRegister,";
2356 case sc_Variant: return "Variant,";
2357 case sc_SUndefined: return "SUndefined,";
2358 case sc_Init: return "Init,";
2359 case sc_Max: return "Max,";
2360 }
2361
2362 return "???,";
2363 }
2364
2365 #endif /* DEBUG */
2366 \f
2367 #ifdef ECOFF_DEBUG
2368
2369 /* Convert symbol type to string. */
2370
2371 static char *
2372 st_to_string (symbol_type)
2373 st_t symbol_type;
2374 {
2375 switch (symbol_type)
2376 {
2377 case st_Nil: return "Nil,";
2378 case st_Global: return "Global,";
2379 case st_Static: return "Static,";
2380 case st_Param: return "Param,";
2381 case st_Local: return "Local,";
2382 case st_Label: return "Label,";
2383 case st_Proc: return "Proc,";
2384 case st_Block: return "Block,";
2385 case st_End: return "End,";
2386 case st_Member: return "Member,";
2387 case st_Typedef: return "Typedef,";
2388 case st_File: return "File,";
2389 case st_RegReloc: return "RegReloc,";
2390 case st_Forward: return "Forward,";
2391 case st_StaticProc: return "StaticProc,";
2392 case st_Constant: return "Constant,";
2393 case st_Str: return "String,";
2394 case st_Number: return "Number,";
2395 case st_Expr: return "Expr,";
2396 case st_Type: return "Type,";
2397 case st_Max: return "Max,";
2398 }
2399
2400 return "???,";
2401 }
2402
2403 #endif /* DEBUG */
2404 \f
2405 /* Parse .begin directives which have a label as the first argument
2406 which gives the location of the start of the block. */
2407
2408 void
2409 ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED)
2410 {
2411 char *name;
2412 char name_end;
2413
2414 if (cur_file_ptr == (efdr_t *) NULL)
2415 {
2416 as_warn (_(".begin directive without a preceding .file directive"));
2417 demand_empty_rest_of_line ();
2418 return;
2419 }
2420
2421 if (cur_proc_ptr == (proc_t *) NULL)
2422 {
2423 as_warn (_(".begin directive without a preceding .ent directive"));
2424 demand_empty_rest_of_line ();
2425 return;
2426 }
2427
2428 name_end = get_symbol_name (&name);
2429
2430 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text,
2431 symbol_find_or_make (name),
2432 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2433
2434 (void) restore_line_pointer (name_end);
2435
2436 /* The line number follows, but we don't use it. */
2437 (void) get_absolute_expression ();
2438 demand_empty_rest_of_line ();
2439 }
2440 \f
2441 /* Parse .bend directives which have a label as the first argument
2442 which gives the location of the end of the block. */
2443
2444 void
2445 ecoff_directive_bend (int ignore ATTRIBUTE_UNUSED)
2446 {
2447 char *name;
2448 char name_end;
2449 symbolS *endsym;
2450
2451 if (cur_file_ptr == (efdr_t *) NULL)
2452 {
2453 as_warn (_(".bend directive without a preceding .file directive"));
2454 demand_empty_rest_of_line ();
2455 return;
2456 }
2457
2458 if (cur_proc_ptr == (proc_t *) NULL)
2459 {
2460 as_warn (_(".bend directive without a preceding .ent directive"));
2461 demand_empty_rest_of_line ();
2462 return;
2463 }
2464
2465 name_end = get_symbol_name (&name);
2466
2467 /* The value is the distance between the .bend directive and the
2468 corresponding symbol. We fill in the offset when we write out
2469 the symbol. */
2470 endsym = symbol_find (name);
2471 if (endsym == (symbolS *) NULL)
2472 as_warn (_(".bend directive names unknown symbol"));
2473 else
2474 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym,
2475 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2476
2477 restore_line_pointer (name_end);
2478
2479 /* The line number follows, but we don't use it. */
2480 (void) get_absolute_expression ();
2481 demand_empty_rest_of_line ();
2482 }
2483 \f
2484 /* COFF debugging information is provided as a series of directives
2485 (.def, .scl, etc.). We build up information as we read the
2486 directives in the following static variables, and file it away when
2487 we reach the .endef directive. */
2488 static char *coff_sym_name;
2489 static type_info_t coff_type;
2490 static sc_t coff_storage_class;
2491 static st_t coff_symbol_typ;
2492 static int coff_is_function;
2493 static char *coff_tag;
2494 static valueT coff_value;
2495 static symbolS *coff_sym_value;
2496 static bfd_vma coff_sym_addend;
2497 static int coff_inside_enumeration;
2498
2499 /* Handle a .def directive: start defining a symbol. */
2500
2501 void
2502 ecoff_directive_def (int ignore ATTRIBUTE_UNUSED)
2503 {
2504 char *name;
2505 char name_end;
2506
2507 ecoff_debugging_seen = 1;
2508
2509 SKIP_WHITESPACE ();
2510
2511 name_end = get_symbol_name (&name);
2512
2513 if (coff_sym_name != (char *) NULL)
2514 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored"));
2515 else if (*name == '\0')
2516 as_warn (_("empty symbol name in .def; ignored"));
2517 else
2518 {
2519 free (coff_sym_name);
2520 free (coff_tag);
2521
2522 coff_sym_name = xstrdup (name);
2523 coff_type = type_info_init;
2524 coff_storage_class = sc_Nil;
2525 coff_symbol_typ = st_Nil;
2526 coff_is_function = 0;
2527 coff_tag = (char *) NULL;
2528 coff_value = 0;
2529 coff_sym_value = (symbolS *) NULL;
2530 coff_sym_addend = 0;
2531 }
2532
2533 restore_line_pointer (name_end);
2534
2535 demand_empty_rest_of_line ();
2536 }
2537
2538 /* Handle a .dim directive, used to give dimensions for an array. The
2539 arguments are comma separated numbers. mips-tfile assumes that
2540 there will not be more than 6 dimensions, and gdb won't read any
2541 more than that anyhow, so I will also make that assumption. */
2542
2543 void
2544 ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED)
2545 {
2546 int dimens[N_TQ];
2547 int i;
2548
2549 if (coff_sym_name == (char *) NULL)
2550 {
2551 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored"));
2552 demand_empty_rest_of_line ();
2553 return;
2554 }
2555
2556 for (i = 0; i < N_TQ; i++)
2557 {
2558 SKIP_WHITESPACE ();
2559 dimens[i] = get_absolute_expression ();
2560 if (*input_line_pointer == ',')
2561 ++input_line_pointer;
2562 else
2563 {
2564 if (*input_line_pointer != '\n'
2565 && *input_line_pointer != ';')
2566 as_warn (_("badly formed .dim directive"));
2567 break;
2568 }
2569 }
2570
2571 if (i == N_TQ)
2572 --i;
2573
2574 /* The dimensions are stored away in reverse order. */
2575 for (; i >= 0; i--)
2576 {
2577 if (coff_type.num_dims >= N_TQ)
2578 {
2579 as_warn (_("too many .dim entries"));
2580 break;
2581 }
2582 coff_type.dimensions[coff_type.num_dims] = dimens[i];
2583 ++coff_type.num_dims;
2584 }
2585
2586 demand_empty_rest_of_line ();
2587 }
2588
2589 /* Handle a .scl directive, which sets the COFF storage class of the
2590 symbol. */
2591
2592 void
2593 ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED)
2594 {
2595 long val;
2596
2597 if (coff_sym_name == (char *) NULL)
2598 {
2599 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored"));
2600 demand_empty_rest_of_line ();
2601 return;
2602 }
2603
2604 val = get_absolute_expression ();
2605
2606 coff_symbol_typ = map_coff_sym_type[val];
2607 coff_storage_class = map_coff_storage[val];
2608
2609 demand_empty_rest_of_line ();
2610 }
2611
2612 /* Handle a .size directive. For some reason mips-tfile.c thinks that
2613 .size can have multiple arguments. We humor it, although gcc will
2614 never generate more than one argument. */
2615
2616 void
2617 ecoff_directive_size (int ignore ATTRIBUTE_UNUSED)
2618 {
2619 int sizes[N_TQ];
2620 int i;
2621
2622 if (coff_sym_name == (char *) NULL)
2623 {
2624 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored"));
2625 demand_empty_rest_of_line ();
2626 return;
2627 }
2628
2629 for (i = 0; i < N_TQ; i++)
2630 {
2631 SKIP_WHITESPACE ();
2632 sizes[i] = get_absolute_expression ();
2633 if (*input_line_pointer == ',')
2634 ++input_line_pointer;
2635 else
2636 {
2637 if (*input_line_pointer != '\n'
2638 && *input_line_pointer != ';')
2639 as_warn (_("badly formed .size directive"));
2640 break;
2641 }
2642 }
2643
2644 if (i == N_TQ)
2645 --i;
2646
2647 /* The sizes are stored away in reverse order. */
2648 for (; i >= 0; i--)
2649 {
2650 if (coff_type.num_sizes >= N_TQ)
2651 {
2652 as_warn (_("too many .size entries"));
2653 break;
2654 }
2655 coff_type.sizes[coff_type.num_sizes] = sizes[i];
2656 ++coff_type.num_sizes;
2657 }
2658
2659 demand_empty_rest_of_line ();
2660 }
2661
2662 /* Handle the .type directive, which gives the COFF type of the
2663 symbol. */
2664
2665 void
2666 ecoff_directive_type (int ignore ATTRIBUTE_UNUSED)
2667 {
2668 long val;
2669 tq_t *tq_ptr;
2670 tq_t *tq_shft;
2671
2672 if (coff_sym_name == (char *) NULL)
2673 {
2674 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored"));
2675 demand_empty_rest_of_line ();
2676 return;
2677 }
2678
2679 val = get_absolute_expression ();
2680
2681 coff_type.orig_type = BTYPE (val);
2682 coff_type.basic_type = map_coff_types[coff_type.orig_type];
2683
2684 tq_ptr = &coff_type.type_qualifiers[N_TQ];
2685 while (val & ~N_BTMASK)
2686 {
2687 if (tq_ptr == &coff_type.type_qualifiers[0])
2688 {
2689 /* FIXME: We could handle this by setting the continued bit.
2690 There would still be a limit: the .type argument can not
2691 be infinite. */
2692 as_warn (_("the type of %s is too complex; it will be simplified"),
2693 coff_sym_name);
2694 break;
2695 }
2696 if (ISPTR (val))
2697 *--tq_ptr = tq_Ptr;
2698 else if (ISFCN (val))
2699 *--tq_ptr = tq_Proc;
2700 else if (ISARY (val))
2701 *--tq_ptr = tq_Array;
2702 else
2703 as_fatal (_("Unrecognized .type argument"));
2704
2705 val = DECREF (val);
2706 }
2707
2708 tq_shft = &coff_type.type_qualifiers[0];
2709 while (tq_ptr != &coff_type.type_qualifiers[N_TQ])
2710 *tq_shft++ = *tq_ptr++;
2711
2712 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc)
2713 {
2714 /* If this is a function, ignore it, so that we don't get two
2715 entries (one from the .ent, and one for the .def that
2716 precedes it). Save the type information so that the end
2717 block can properly add it after the begin block index. For
2718 MIPS knows what reason, we must strip off the function type
2719 at this point. */
2720 coff_is_function = 1;
2721 tq_shft[-1] = tq_Nil;
2722 }
2723
2724 while (tq_shft != &coff_type.type_qualifiers[N_TQ])
2725 *tq_shft++ = tq_Nil;
2726
2727 demand_empty_rest_of_line ();
2728 }
2729
2730 /* Handle the .tag directive, which gives the name of a structure,
2731 union or enum. */
2732
2733 void
2734 ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED)
2735 {
2736 char *name;
2737 char name_end;
2738
2739 if (coff_sym_name == (char *) NULL)
2740 {
2741 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored"));
2742 demand_empty_rest_of_line ();
2743 return;
2744 }
2745
2746 name_end = get_symbol_name (&name);
2747
2748 coff_tag = xstrdup (name);
2749
2750 (void) restore_line_pointer (name_end);
2751
2752 demand_empty_rest_of_line ();
2753 }
2754
2755 /* Handle the .val directive, which gives the value of the symbol. It
2756 may be the name of a static or global symbol. */
2757
2758 void
2759 ecoff_directive_val (int ignore ATTRIBUTE_UNUSED)
2760 {
2761 expressionS exp;
2762
2763 if (coff_sym_name == (char *) NULL)
2764 {
2765 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored"));
2766 demand_empty_rest_of_line ();
2767 return;
2768 }
2769
2770 expression (&exp);
2771 if (exp.X_op != O_constant && exp.X_op != O_symbol)
2772 {
2773 as_bad (_(".val expression is too complex"));
2774 demand_empty_rest_of_line ();
2775 return;
2776 }
2777
2778 if (exp.X_op == O_constant)
2779 coff_value = exp.X_add_number;
2780 else
2781 {
2782 coff_sym_value = exp.X_add_symbol;
2783 coff_sym_addend = exp.X_add_number;
2784 }
2785
2786 demand_empty_rest_of_line ();
2787 }
2788
2789 /* Handle the .endef directive, which terminates processing of COFF
2790 debugging information for a symbol. */
2791
2792 void
2793 ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED)
2794 {
2795 char *name;
2796 symint_t indx;
2797 localsym_t *sym;
2798
2799 demand_empty_rest_of_line ();
2800
2801 if (coff_sym_name == (char *) NULL)
2802 {
2803 as_warn (_(".endef pseudo-op used before .def; ignored"));
2804 return;
2805 }
2806
2807 name = coff_sym_name;
2808 coff_sym_name = (char *) NULL;
2809
2810 /* If the symbol is a static or external, we have already gotten the
2811 appropriate type and class, so make sure we don't override those
2812 values. This is needed because there are some type and classes
2813 that are not in COFF, such as short data, etc. */
2814 if (coff_sym_value != (symbolS *) NULL)
2815 {
2816 coff_symbol_typ = st_Nil;
2817 coff_storage_class = sc_Nil;
2818 }
2819
2820 coff_type.extra_sizes = coff_tag != (char *) NULL;
2821 if (coff_type.num_dims > 0)
2822 {
2823 int diff = coff_type.num_dims - coff_type.num_sizes;
2824 int i = coff_type.num_dims - 1;
2825 int j;
2826
2827 if (coff_type.num_sizes != 1 || diff < 0)
2828 {
2829 as_warn (_("bad COFF debugging information"));
2830 return;
2831 }
2832
2833 /* If this is an array, make sure the same number of dimensions
2834 and sizes were passed, creating extra sizes for multiply
2835 dimensioned arrays if not passed. */
2836 coff_type.extra_sizes = 0;
2837 if (diff)
2838 {
2839 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1;
2840 while (j >= 0)
2841 {
2842 coff_type.sizes[j] = (((j - diff) >= 0)
2843 ? coff_type.sizes[j - diff]
2844 : 0);
2845 j--;
2846 }
2847
2848 coff_type.num_sizes = i + 1;
2849 for (i--; i >= 0; i--)
2850 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0
2851 ? 0
2852 : (coff_type.sizes[i + 1]
2853 / coff_type.dimensions[i + 1]));
2854 }
2855 }
2856 else if (coff_symbol_typ == st_Member
2857 && coff_type.num_sizes - coff_type.extra_sizes == 1)
2858 {
2859 /* Is this a bitfield? This is indicated by a structure member
2860 having a size field that isn't an array. */
2861 coff_type.bitfield = 1;
2862 }
2863
2864 /* Except for enumeration members & begin/ending of scopes, put the
2865 type word in the aux. symbol table. */
2866 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End)
2867 indx = 0;
2868 else if (coff_inside_enumeration)
2869 indx = cur_file_ptr->void_type;
2870 else
2871 {
2872 if (coff_type.basic_type == bt_Struct
2873 || coff_type.basic_type == bt_Union
2874 || coff_type.basic_type == bt_Enum)
2875 {
2876 if (coff_tag == (char *) NULL)
2877 {
2878 as_warn (_("no tag specified for %s"), name);
2879 return;
2880 }
2881
2882 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL,
2883 coff_type.basic_type);
2884 }
2885
2886 if (coff_is_function)
2887 {
2888 last_func_type_info = coff_type;
2889 last_func_sym_value = coff_sym_value;
2890 return;
2891 }
2892
2893 indx = add_aux_sym_tir (&coff_type,
2894 hash_yes,
2895 &cur_file_ptr->thash_head[0]);
2896 }
2897
2898 /* Do any last minute adjustments that are necessary. */
2899 switch (coff_symbol_typ)
2900 {
2901 default:
2902 break;
2903
2904 /* For the beginning of structs, unions, and enumerations, the
2905 size info needs to be passed in the value field. */
2906 case st_Block:
2907 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes
2908 != 1)
2909 {
2910 as_warn (_("bad COFF debugging information"));
2911 return;
2912 }
2913 else
2914 coff_value = coff_type.sizes[0];
2915
2916 coff_inside_enumeration = (coff_type.orig_type == T_ENUM);
2917 break;
2918
2919 /* For the end of structs, unions, and enumerations, omit the
2920 name which is always ".eos". This needs to be done last, so
2921 that any error reporting above gives the correct name. */
2922 case st_End:
2923 free (name);
2924 name = (char *) NULL;
2925 coff_value = 0;
2926 coff_inside_enumeration = 0;
2927 break;
2928
2929 /* Members of structures and unions that aren't bitfields, need
2930 to adjust the value from a byte offset to a bit offset.
2931 Members of enumerations do not have the value adjusted, and
2932 can be distinguished by indx == indexNil. For enumerations,
2933 update the maximum enumeration value. */
2934 case st_Member:
2935 if (! coff_type.bitfield && ! coff_inside_enumeration)
2936 coff_value *= 8;
2937
2938 break;
2939 }
2940
2941 /* Add the symbol. */
2942 sym = add_ecoff_symbol (name,
2943 coff_symbol_typ,
2944 coff_storage_class,
2945 coff_sym_value,
2946 coff_sym_addend,
2947 (symint_t) coff_value,
2948 indx);
2949
2950 /* deal with struct, union, and enum tags. */
2951 if (coff_symbol_typ == st_Block)
2952 {
2953 /* Create or update the tag information. */
2954 tag_t *tag_ptr = get_tag (name,
2955 sym,
2956 coff_type.basic_type);
2957 forward_t **pf;
2958
2959 /* Remember any forward references. */
2960 for (pf = &sym->forward_ref;
2961 *pf != (forward_t *) NULL;
2962 pf = &(*pf)->next)
2963 ;
2964 *pf = tag_ptr->forward_ref;
2965 tag_ptr->forward_ref = (forward_t *) NULL;
2966 }
2967 }
2968 \f
2969 /* Parse .end directives. */
2970
2971 void
2972 ecoff_directive_end (int ignore ATTRIBUTE_UNUSED)
2973 {
2974 char *name;
2975 char name_end;
2976 symbolS *ent;
2977
2978 if (cur_file_ptr == (efdr_t *) NULL)
2979 {
2980 as_warn (_(".end directive without a preceding .file directive"));
2981 demand_empty_rest_of_line ();
2982 return;
2983 }
2984
2985 if (cur_proc_ptr == (proc_t *) NULL)
2986 {
2987 as_warn (_(".end directive without a preceding .ent directive"));
2988 demand_empty_rest_of_line ();
2989 return;
2990 }
2991
2992 name_end = get_symbol_name (&name);
2993
2994 if (name == input_line_pointer)
2995 {
2996 as_warn (_(".end directive has no name"));
2997 (void) restore_line_pointer (name_end);
2998 demand_empty_rest_of_line ();
2999 return;
3000 }
3001
3002 /* The value is the distance between the .end directive and the
3003 corresponding symbol. We create a fake symbol to hold the
3004 current location, and put in the offset when we write out the
3005 symbol. */
3006 ent = symbol_find (name);
3007 if (ent == (symbolS *) NULL)
3008 as_warn (_(".end directive names unknown symbol"));
3009 else
3010 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text,
3011 symbol_new (FAKE_LABEL_NAME, now_seg,
3012 frag_now, frag_now_fix ()),
3013 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
3014
3015 #ifdef md_flush_pending_output
3016 md_flush_pending_output ();
3017 #endif
3018
3019 cur_proc_ptr = (proc_t *) NULL;
3020
3021 (void) restore_line_pointer (name_end);
3022 demand_empty_rest_of_line ();
3023 }
3024 \f
3025 /* Parse .ent directives. */
3026
3027 void
3028 ecoff_directive_ent (int aent)
3029 {
3030 char *name;
3031 char name_end;
3032
3033 if (cur_file_ptr == (efdr_t *) NULL)
3034 add_file ((const char *) NULL, 0, 1);
3035
3036 if (!aent && cur_proc_ptr != (proc_t *) NULL)
3037 {
3038 as_warn (_("second .ent directive found before .end directive"));
3039 demand_empty_rest_of_line ();
3040 return;
3041 }
3042
3043 name_end = get_symbol_name (&name);
3044
3045 if (name == input_line_pointer)
3046 {
3047 as_warn (_("%s directive has no name"), aent ? ".aent" : ".ent");
3048 (void) restore_line_pointer (name_end);
3049 demand_empty_rest_of_line ();
3050 return;
3051 }
3052
3053 add_procedure (name, aent);
3054
3055 (void) restore_line_pointer (name_end);
3056
3057 /* The .ent directive is sometimes followed by a number. I'm not
3058 really sure what the number means. I don't see any way to store
3059 the information in the PDR. The Irix 4 assembler seems to ignore
3060 the information. */
3061 SKIP_WHITESPACE ();
3062 if (*input_line_pointer == ',')
3063 {
3064 ++input_line_pointer;
3065 SKIP_WHITESPACE ();
3066 }
3067 if (ISDIGIT (*input_line_pointer)
3068 || *input_line_pointer == '-')
3069 (void) get_absolute_expression ();
3070
3071 demand_empty_rest_of_line ();
3072 }
3073 \f
3074 /* Parse .extern directives. */
3075
3076 void
3077 ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED)
3078 {
3079 char *name;
3080 int c;
3081 symbolS *symbolp;
3082 valueT size;
3083
3084 c = get_symbol_name (&name);
3085 symbolp = symbol_find_or_make (name);
3086 (void) restore_line_pointer (c);
3087
3088 S_SET_EXTERNAL (symbolp);
3089
3090 if (*input_line_pointer == ',')
3091 ++input_line_pointer;
3092 size = get_absolute_expression ();
3093
3094 symbol_get_obj (symbolp)->ecoff_extern_size = size;
3095 }
3096 \f
3097 /* Parse .file directives. */
3098
3099 void
3100 ecoff_directive_file (int ignore ATTRIBUTE_UNUSED)
3101 {
3102 int indx;
3103 char *name;
3104 int len;
3105
3106 if (cur_proc_ptr != (proc_t *) NULL)
3107 {
3108 as_warn (_("no way to handle .file within .ent/.end section"));
3109 demand_empty_rest_of_line ();
3110 return;
3111 }
3112
3113 indx = (int) get_absolute_expression ();
3114
3115 /* FIXME: we don't have to save the name here. */
3116 name = demand_copy_C_string (&len);
3117
3118 add_file (name, indx - 1, 0);
3119
3120 demand_empty_rest_of_line ();
3121 }
3122 \f
3123 /* Parse .fmask directives. */
3124
3125 void
3126 ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED)
3127 {
3128 long val;
3129
3130 if (cur_proc_ptr == (proc_t *) NULL)
3131 {
3132 as_warn (_(".fmask outside of .ent"));
3133 demand_empty_rest_of_line ();
3134 return;
3135 }
3136
3137 if (get_absolute_expression_and_terminator (&val) != ',')
3138 {
3139 as_warn (_("bad .fmask directive"));
3140 --input_line_pointer;
3141 demand_empty_rest_of_line ();
3142 return;
3143 }
3144
3145 cur_proc_ptr->pdr.fregmask = val;
3146 cur_proc_ptr->pdr.fregoffset = get_absolute_expression ();
3147
3148 demand_empty_rest_of_line ();
3149 }
3150 \f
3151 /* Parse .frame directives. */
3152
3153 void
3154 ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED)
3155 {
3156 long val;
3157
3158 if (cur_proc_ptr == (proc_t *) NULL)
3159 {
3160 as_warn (_(".frame outside of .ent"));
3161 demand_empty_rest_of_line ();
3162 return;
3163 }
3164
3165 cur_proc_ptr->pdr.framereg = tc_get_register (1);
3166
3167 SKIP_WHITESPACE ();
3168 if (*input_line_pointer++ != ','
3169 || get_absolute_expression_and_terminator (&val) != ',')
3170 {
3171 as_warn (_("bad .frame directive"));
3172 --input_line_pointer;
3173 demand_empty_rest_of_line ();
3174 return;
3175 }
3176
3177 cur_proc_ptr->pdr.frameoffset = val;
3178
3179 cur_proc_ptr->pdr.pcreg = tc_get_register (0);
3180
3181 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to
3182 Sandro. I don't yet know where this value should be stored, if
3183 anywhere. Don't call demand_empty_rest_of_line (). */
3184 s_ignore (42);
3185 }
3186 \f
3187 /* Parse .mask directives. */
3188
3189 void
3190 ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED)
3191 {
3192 long val;
3193
3194 if (cur_proc_ptr == (proc_t *) NULL)
3195 {
3196 as_warn (_(".mask outside of .ent"));
3197 demand_empty_rest_of_line ();
3198 return;
3199 }
3200
3201 if (get_absolute_expression_and_terminator (&val) != ',')
3202 {
3203 as_warn (_("bad .mask directive"));
3204 --input_line_pointer;
3205 demand_empty_rest_of_line ();
3206 return;
3207 }
3208
3209 cur_proc_ptr->pdr.regmask = val;
3210 cur_proc_ptr->pdr.regoffset = get_absolute_expression ();
3211
3212 demand_empty_rest_of_line ();
3213 }
3214 \f
3215 /* Parse .loc directives. */
3216
3217 void
3218 ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED)
3219 {
3220 lineno_list_t *list;
3221 symint_t lineno;
3222
3223 if (cur_file_ptr == (efdr_t *) NULL)
3224 {
3225 as_warn (_(".loc before .file"));
3226 demand_empty_rest_of_line ();
3227 return;
3228 }
3229
3230 if (now_seg != text_section)
3231 {
3232 as_warn (_(".loc outside of .text"));
3233 demand_empty_rest_of_line ();
3234 return;
3235 }
3236
3237 /* Skip the file number. */
3238 SKIP_WHITESPACE ();
3239 get_absolute_expression ();
3240 SKIP_WHITESPACE ();
3241
3242 lineno = get_absolute_expression ();
3243
3244 #ifndef NO_LISTING
3245 if (listing)
3246 listing_source_line (lineno);
3247 #endif
3248
3249 /* If we're building stabs, then output a special label rather than
3250 ECOFF line number info. */
3251 if (stabs_seen)
3252 {
3253 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text,
3254 symbol_new (FAKE_LABEL_NAME, now_seg,
3255 frag_now, frag_now_fix ()),
3256 (bfd_vma) 0, 0, lineno);
3257 return;
3258 }
3259
3260 list = allocate_lineno_list ();
3261
3262 list->next = (lineno_list_t *) NULL;
3263 list->file = cur_file_ptr;
3264 list->proc = cur_proc_ptr;
3265 list->frag = frag_now;
3266 list->paddr = frag_now_fix ();
3267 list->lineno = lineno;
3268
3269 /* We don't want to merge files which have line numbers. */
3270 cur_file_ptr->fdr.fMerge = 0;
3271
3272 /* A .loc directive will sometimes appear before a .ent directive,
3273 which means that cur_proc_ptr will be NULL here. Arrange to
3274 patch this up. */
3275 if (cur_proc_ptr == (proc_t *) NULL)
3276 {
3277 lineno_list_t **pl;
3278
3279 pl = &noproc_lineno;
3280 while (*pl != (lineno_list_t *) NULL)
3281 pl = &(*pl)->next;
3282 *pl = list;
3283 }
3284 else
3285 {
3286 last_lineno = list;
3287 *last_lineno_ptr = list;
3288 last_lineno_ptr = &list->next;
3289 }
3290 }
3291
3292 /* The MIPS assembler sometimes inserts nop instructions in the
3293 instruction stream. When this happens, we must patch up the .loc
3294 information so that it points to the instruction after the nop. */
3295
3296 void
3297 ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset)
3298 {
3299 if (last_lineno != NULL
3300 && last_lineno->frag == old_frag
3301 && last_lineno->paddr == old_frag_offset)
3302 {
3303 last_lineno->frag = frag_now;
3304 last_lineno->paddr = frag_now_fix ();
3305 }
3306 }
3307 \f
3308 /* Make sure the @stabs symbol is emitted. */
3309
3310 static void
3311 mark_stabs (int ignore ATTRIBUTE_UNUSED)
3312 {
3313 if (! stabs_seen)
3314 {
3315 /* Add a dummy @stabs symbol. */
3316 stabs_seen = 1;
3317 (void) add_ecoff_symbol (stabs_symbol, st_Nil, sc_Info,
3318 (symbolS *) NULL,
3319 (bfd_vma) 0, (symint_t) -1,
3320 ECOFF_MARK_STAB (0));
3321 }
3322 }
3323 \f
3324 /* Parse .weakext directives. */
3325 #ifndef TC_MIPS
3326 /* For TC_MIPS use the version in tc-mips.c. */
3327 void
3328 ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED)
3329 {
3330 char *name;
3331 int c;
3332 symbolS *symbolP;
3333 expressionS exp;
3334
3335 c = get_symbol_name (&name);
3336 symbolP = symbol_find_or_make (name);
3337 (void) restore_line_pointer (c);
3338
3339 SKIP_WHITESPACE ();
3340
3341 if (*input_line_pointer == ',')
3342 {
3343 if (S_IS_DEFINED (symbolP))
3344 {
3345 as_bad (_("symbol `%s' is already defined"),
3346 S_GET_NAME (symbolP));
3347 ignore_rest_of_line ();
3348 return;
3349 }
3350
3351 ++input_line_pointer;
3352 SKIP_WHITESPACE ();
3353 if (! is_end_of_line[(unsigned char) *input_line_pointer])
3354 {
3355 expression (&exp);
3356 if (exp.X_op != O_symbol)
3357 {
3358 as_bad (_("bad .weakext directive"));
3359 ignore_rest_of_line ();
3360 return;
3361 }
3362 symbol_set_value_expression (symbolP, &exp);
3363 }
3364 }
3365
3366 S_SET_WEAK (symbolP);
3367
3368 demand_empty_rest_of_line ();
3369 }
3370 #endif /* not TC_MIPS */
3371 \f
3372 /* Handle .stabs directives. The actual parsing routine is done by a
3373 generic routine. This routine is called via OBJ_PROCESS_STAB.
3374 When this is called, input_line_pointer will be pointing at the
3375 value field of the stab.
3376
3377 .stabs directives have five fields:
3378 "string" a string, encoding the type information.
3379 code a numeric code, defined in <stab.h>
3380 0 a zero
3381 desc a zero or line number
3382 value a numeric value or an address.
3383
3384 If the value is relocatable, we transform this into:
3385 iss points as an index into string space
3386 value value from lookup of the name
3387 st st from lookup of the name
3388 sc sc from lookup of the name
3389 index code|CODE_MASK
3390
3391 If the value is not relocatable, we transform this into:
3392 iss points as an index into string space
3393 value value
3394 st st_Nil
3395 sc sc_Nil
3396 index code|CODE_MASK
3397
3398 .stabn directives have four fields (string is null):
3399 code a numeric code, defined in <stab.h>
3400 0 a zero
3401 desc a zero or a line number
3402 value a numeric value or an address. */
3403
3404 void
3405 ecoff_stab (segT sec ATTRIBUTE_UNUSED,
3406 int what,
3407 const char *string,
3408 int type,
3409 int other,
3410 int desc)
3411 {
3412 efdr_t *save_file_ptr = cur_file_ptr;
3413 symbolS *sym;
3414 symint_t value;
3415 bfd_vma addend;
3416 st_t st;
3417 sc_t sc;
3418 symint_t indx;
3419 localsym_t *hold = NULL;
3420
3421 ecoff_debugging_seen = 1;
3422
3423 /* We don't handle .stabd. */
3424 if (what != 's' && what != 'n')
3425 {
3426 as_bad (_(".stab%c is not supported"), what);
3427 return;
3428 }
3429
3430 /* A .stabn uses a null name, not an empty string. */
3431 if (what == 'n')
3432 string = NULL;
3433
3434 /* We ignore the other field. */
3435 if (other != 0)
3436 as_warn (_(".stab%c: ignoring non-zero other field"), what);
3437
3438 /* Make sure we have a current file. */
3439 if (cur_file_ptr == (efdr_t *) NULL)
3440 {
3441 add_file ((const char *) NULL, 0, 1);
3442 save_file_ptr = cur_file_ptr;
3443 }
3444
3445 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
3446 signal to gdb. */
3447 if (stabs_seen == 0)
3448 mark_stabs (0);
3449
3450 /* Line number stabs are handled differently, since they have two
3451 values, the line number and the address of the label. We use the
3452 index field (aka desc) to hold the line number, and the value
3453 field to hold the address. The symbol type is st_Label, which
3454 should be different from the other stabs, so that gdb can
3455 recognize it. */
3456 if (type == N_SLINE)
3457 {
3458 SYMR dummy_symr;
3459 char *name;
3460 char name_end;
3461
3462 #ifndef NO_LISTING
3463 if (listing)
3464 listing_source_line ((unsigned int) desc);
3465 #endif
3466
3467 dummy_symr.index = desc;
3468 if (dummy_symr.index != desc)
3469 {
3470 as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"),
3471 desc, what);
3472 return;
3473 }
3474
3475 name_end = get_symbol_name (&name);
3476 sym = symbol_find_or_make (name);
3477 (void) restore_line_pointer (name_end);
3478
3479 value = 0;
3480 addend = 0;
3481 st = st_Label;
3482 sc = sc_Text;
3483 indx = desc;
3484 }
3485 else
3486 {
3487 #ifndef NO_LISTING
3488 if (listing && (type == N_SO || type == N_SOL))
3489 listing_source_file (string);
3490 #endif
3491
3492 if (ISDIGIT (*input_line_pointer)
3493 || *input_line_pointer == '-'
3494 || *input_line_pointer == '+')
3495 {
3496 st = st_Nil;
3497 sc = sc_Nil;
3498 sym = (symbolS *) NULL;
3499 value = get_absolute_expression ();
3500 addend = 0;
3501 }
3502 else if (! is_name_beginner ((unsigned char) *input_line_pointer))
3503 {
3504 as_warn (_("illegal .stab%c directive, bad character"), what);
3505 return;
3506 }
3507 else
3508 {
3509 expressionS exp;
3510
3511 sc = sc_Nil;
3512 st = st_Nil;
3513
3514 expression (&exp);
3515 if (exp.X_op == O_constant)
3516 {
3517 sym = NULL;
3518 value = exp.X_add_number;
3519 addend = 0;
3520 }
3521 else if (exp.X_op == O_symbol)
3522 {
3523 sym = exp.X_add_symbol;
3524 value = 0;
3525 addend = exp.X_add_number;
3526 }
3527 else
3528 {
3529 sym = make_expr_symbol (&exp);
3530 value = 0;
3531 addend = 0;
3532 }
3533 }
3534
3535 indx = ECOFF_MARK_STAB (type);
3536 }
3537
3538 /* Don't store the stabs symbol we are creating as the type of the
3539 ECOFF symbol. We want to compute the type of the ECOFF symbol
3540 independently. */
3541 if (sym != (symbolS *) NULL)
3542 hold = symbol_get_obj (sym)->ecoff_symbol;
3543
3544 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx);
3545
3546 if (sym != (symbolS *) NULL)
3547 symbol_get_obj (sym)->ecoff_symbol = hold;
3548
3549 /* Restore normal file type. */
3550 cur_file_ptr = save_file_ptr;
3551 }
3552 \f
3553 static asection ecoff_scom_section;
3554 static const asymbol ecoff_scom_symbol =
3555 GLOBAL_SYM_INIT (SCOMMON, &ecoff_scom_section);
3556 static asection ecoff_scom_section =
3557 BFD_FAKE_SECTION (ecoff_scom_section, &ecoff_scom_symbol,
3558 SCOMMON, 0, SEC_IS_COMMON | SEC_SMALL_DATA);
3559
3560 /* Frob an ECOFF symbol. Small common symbols go into a special
3561 .scommon section rather than bfd_com_section. */
3562
3563 void
3564 ecoff_frob_symbol (symbolS *sym)
3565 {
3566 if (S_IS_COMMON (sym)
3567 && S_GET_VALUE (sym) > 0
3568 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput))
3569 {
3570 S_SET_SEGMENT (sym, &ecoff_scom_section);
3571 }
3572
3573 /* Double check weak symbols. */
3574 if (S_IS_WEAK (sym))
3575 {
3576 if (S_IS_COMMON (sym))
3577 as_bad (_("symbol `%s' can not be both weak and common"),
3578 S_GET_NAME (sym));
3579 }
3580 }
3581 \f
3582 /* Add bytes to the symbolic information buffer. */
3583
3584 static char *
3585 ecoff_add_bytes (char **buf,
3586 char **bufend,
3587 char *bufptr,
3588 unsigned long need)
3589 {
3590 unsigned long at;
3591 unsigned long want;
3592
3593 at = bufptr - *buf;
3594 need -= *bufend - bufptr;
3595 if (need < PAGE_SIZE)
3596 need = PAGE_SIZE;
3597 want = (*bufend - *buf) + need;
3598 *buf = XRESIZEVEC (char, *buf, want);
3599 *bufend = *buf + want;
3600 return *buf + at;
3601 }
3602
3603 /* Adjust the symbolic information buffer to the alignment required
3604 for the ECOFF target debugging information. */
3605
3606 static unsigned long
3607 ecoff_padding_adjust (const struct ecoff_debug_swap *backend,
3608 char **buf,
3609 char **bufend,
3610 unsigned long offset,
3611 char **bufptrptr)
3612 {
3613 bfd_size_type align;
3614
3615 align = backend->debug_align;
3616 if ((offset & (align - 1)) != 0)
3617 {
3618 unsigned long add;
3619
3620 add = align - (offset & (align - 1));
3621 if ((unsigned long) (*bufend - (*buf + offset)) < add)
3622 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add);
3623 memset (*buf + offset, 0, add);
3624 offset += add;
3625 if (bufptrptr != (char **) NULL)
3626 *bufptrptr = *buf + offset;
3627 }
3628
3629 return offset;
3630 }
3631
3632 /* Build the line number information. */
3633
3634 static unsigned long
3635 ecoff_build_lineno (const struct ecoff_debug_swap *backend,
3636 char **buf,
3637 char **bufend,
3638 unsigned long offset,
3639 long *linecntptr)
3640 {
3641 char *bufptr;
3642 lineno_list_t *l;
3643 lineno_list_t *last;
3644 efdr_t *file;
3645 proc_t *proc;
3646 unsigned long c;
3647 long iline;
3648 long totcount;
3649 lineno_list_t first;
3650 lineno_list_t *local_first_lineno = first_lineno;
3651
3652 if (linecntptr != (long *) NULL)
3653 *linecntptr = 0;
3654
3655 bufptr = *buf + offset;
3656
3657 file = (efdr_t *) NULL;
3658 proc = (proc_t *) NULL;
3659 last = (lineno_list_t *) NULL;
3660 c = offset;
3661 iline = 0;
3662 totcount = 0;
3663
3664 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to
3665 remove this code. */
3666 /* For some reason the address of the first procedure is ignored
3667 when reading line numbers. This doesn't matter if the address of
3668 the first procedure is 0, but when gcc is generating MIPS
3669 embedded PIC code, it will put strings in the .text section
3670 before the first procedure. We cope by inserting a dummy line if
3671 the address of the first procedure is not 0. Hopefully this
3672 won't screw things up too badly.
3673
3674 Don't do this for ECOFF assembly source line numbers. They work
3675 without this extra attention. */
3676 if (debug_type != DEBUG_ECOFF
3677 && first_proc_ptr != (proc_t *) NULL
3678 && local_first_lineno != (lineno_list_t *) NULL
3679 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym)
3680 + bfd_section_vma (S_GET_SEGMENT (first_proc_ptr->sym->as_sym)))
3681 != 0))
3682 {
3683 first.file = local_first_lineno->file;
3684 first.proc = local_first_lineno->proc;
3685 first.frag = &zero_address_frag;
3686 first.paddr = 0;
3687 first.lineno = 0;
3688
3689 first.next = local_first_lineno;
3690 local_first_lineno = &first;
3691 }
3692
3693 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next)
3694 {
3695 long count;
3696 long delta;
3697
3698 /* Get the offset to the memory address of the next line number
3699 (in words). Do this first, so that we can skip ahead to the
3700 next useful line number entry. */
3701 if (l->next == (lineno_list_t *) NULL)
3702 {
3703 /* We want a count of zero, but it will be decremented
3704 before it is used. */
3705 count = 1;
3706 }
3707 else if (l->next->frag->fr_address + l->next->paddr
3708 > l->frag->fr_address + l->paddr)
3709 {
3710 count = ((l->next->frag->fr_address + l->next->paddr
3711 - (l->frag->fr_address + l->paddr))
3712 >> 2);
3713 }
3714 else
3715 {
3716 /* Don't change last, so we still get the right delta. */
3717 continue;
3718 }
3719
3720 if (l->file != file || l->proc != proc)
3721 {
3722 if (l->proc != proc && proc != (proc_t *) NULL)
3723 proc->pdr.lnHigh = last->lineno;
3724 if (l->file != file && file != (efdr_t *) NULL)
3725 {
3726 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3727 file->fdr.cline = totcount + count;
3728 if (linecntptr != (long *) NULL)
3729 *linecntptr += totcount + count;
3730 totcount = 0;
3731 }
3732
3733 if (l->file != file)
3734 {
3735 efdr_t *last_file = file;
3736
3737 file = l->file;
3738 if (last_file != (efdr_t *) NULL)
3739 file->fdr.ilineBase
3740 = last_file->fdr.ilineBase + last_file->fdr.cline;
3741 else
3742 file->fdr.ilineBase = 0;
3743 file->fdr.cbLineOffset = c;
3744 }
3745 if (l->proc != proc)
3746 {
3747 proc = l->proc;
3748 if (proc != (proc_t *) NULL)
3749 {
3750 proc->pdr.lnLow = l->lineno;
3751 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset;
3752 proc->pdr.iline = totcount;
3753 }
3754 }
3755
3756 last = (lineno_list_t *) NULL;
3757 }
3758
3759 totcount += count;
3760
3761 /* Get the offset to this line number. */
3762 if (last == (lineno_list_t *) NULL)
3763 delta = 0;
3764 else
3765 delta = l->lineno - last->lineno;
3766
3767 /* Put in the offset to this line number. */
3768 while (delta != 0)
3769 {
3770 int setcount;
3771
3772 /* 1 is added to each count read. */
3773 --count;
3774 /* We can only adjust the word count by up to 15 words at a
3775 time. */
3776 if (count <= 0x0f)
3777 {
3778 setcount = count;
3779 count = 0;
3780 }
3781 else
3782 {
3783 setcount = 0x0f;
3784 count -= 0x0f;
3785 }
3786 if (delta >= -7 && delta <= 7)
3787 {
3788 if (bufptr >= *bufend)
3789 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3790 *bufptr++ = setcount + (delta << 4);
3791 delta = 0;
3792 ++c;
3793 }
3794 else
3795 {
3796 int set;
3797
3798 if (*bufend - bufptr < 3)
3799 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3);
3800 *bufptr++ = setcount + (8 << 4);
3801 if (delta < -0x8000)
3802 {
3803 set = -0x8000;
3804 delta += 0x8000;
3805 }
3806 else if (delta > 0x7fff)
3807 {
3808 set = 0x7fff;
3809 delta -= 0x7fff;
3810 }
3811 else
3812 {
3813 set = delta;
3814 delta = 0;
3815 }
3816 *bufptr++ = set >> 8;
3817 *bufptr++ = set & 0xffff;
3818 c += 3;
3819 }
3820 }
3821
3822 /* Finish adjusting the count. */
3823 while (count > 0)
3824 {
3825 if (bufptr >= *bufend)
3826 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3827 /* 1 is added to each count read. */
3828 --count;
3829 if (count > 0x0f)
3830 {
3831 *bufptr++ = 0x0f;
3832 count -= 0x0f;
3833 }
3834 else
3835 {
3836 *bufptr++ = count;
3837 count = 0;
3838 }
3839 ++c;
3840 }
3841
3842 ++iline;
3843 last = l;
3844 }
3845
3846 if (proc != (proc_t *) NULL)
3847 proc->pdr.lnHigh = last->lineno;
3848 if (file != (efdr_t *) NULL)
3849 {
3850 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3851 file->fdr.cline = totcount;
3852 }
3853
3854 if (linecntptr != (long *) NULL)
3855 *linecntptr += totcount;
3856
3857 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr);
3858
3859 return c;
3860 }
3861
3862 /* Build and swap out the symbols. */
3863
3864 static unsigned long
3865 ecoff_build_symbols (const struct ecoff_debug_swap *backend,
3866 char **buf,
3867 char **bufend,
3868 unsigned long offset)
3869 {
3870 const bfd_size_type external_sym_size = backend->external_sym_size;
3871 void (* const swap_sym_out) (bfd *, const SYMR *, void *)
3872 = backend->swap_sym_out;
3873 char *sym_out;
3874 long isym;
3875 vlinks_t *file_link;
3876
3877 sym_out = *buf + offset;
3878
3879 isym = 0;
3880
3881 /* The symbols are stored by file. */
3882 for (file_link = file_desc.first;
3883 file_link != (vlinks_t *) NULL;
3884 file_link = file_link->next)
3885 {
3886 int ifilesym;
3887 int fil_cnt;
3888 efdr_t *fil_ptr;
3889 efdr_t *fil_end;
3890
3891 if (file_link->next == (vlinks_t *) NULL)
3892 fil_cnt = file_desc.objects_last_page;
3893 else
3894 fil_cnt = file_desc.objects_per_page;
3895 fil_ptr = file_link->datum->file;
3896 fil_end = fil_ptr + fil_cnt;
3897 for (; fil_ptr < fil_end; fil_ptr++)
3898 {
3899 vlinks_t *sym_link;
3900
3901 fil_ptr->fdr.isymBase = isym;
3902 ifilesym = isym;
3903 for (sym_link = fil_ptr->symbols.first;
3904 sym_link != (vlinks_t *) NULL;
3905 sym_link = sym_link->next)
3906 {
3907 int sym_cnt;
3908 localsym_t *sym_ptr;
3909 localsym_t *sym_end;
3910
3911 if (sym_link->next == (vlinks_t *) NULL)
3912 sym_cnt = fil_ptr->symbols.objects_last_page;
3913 else
3914 sym_cnt = fil_ptr->symbols.objects_per_page;
3915 sym_ptr = sym_link->datum->sym;
3916 sym_end = sym_ptr + sym_cnt;
3917 for (; sym_ptr < sym_end; sym_ptr++)
3918 {
3919 int local;
3920 symbolS *as_sym;
3921 forward_t *f;
3922
3923 know (sym_ptr->file_ptr == fil_ptr);
3924
3925 /* If there is no associated gas symbol, then this
3926 is a pure debugging symbol. We have already
3927 added the name (if any) to fil_ptr->strings.
3928 Otherwise we must decide whether this is an
3929 external or a local symbol (actually, it may be
3930 both if the local provides additional debugging
3931 information for the external). */
3932 local = 1;
3933 as_sym = sym_ptr->as_sym;
3934 if (as_sym != (symbolS *) NULL)
3935 {
3936 symint_t indx;
3937
3938 /* The value of a block start symbol is the
3939 offset from the start of the procedure. For
3940 other symbols we just use the gas value (but
3941 we must offset it by the vma of the section,
3942 just as BFD does, because BFD will not see
3943 this value). */
3944 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block
3945 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text)
3946 {
3947 symbolS *begin_sym;
3948
3949 know (sym_ptr->proc_ptr != (proc_t *) NULL);
3950 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
3951 if (S_GET_SEGMENT (as_sym)
3952 != S_GET_SEGMENT (begin_sym))
3953 as_warn (_(".begin/.bend in different segments"));
3954 sym_ptr->ecoff_sym.asym.value =
3955 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
3956 }
3957 else
3958 sym_ptr->ecoff_sym.asym.value =
3959 (S_GET_VALUE (as_sym)
3960 + bfd_section_vma (S_GET_SEGMENT (as_sym))
3961 + sym_ptr->addend);
3962
3963 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym);
3964
3965 /* Set st_Proc to st_StaticProc for local
3966 functions. */
3967 if (sym_ptr->ecoff_sym.asym.st == st_Proc
3968 && S_IS_DEFINED (as_sym)
3969 && ! S_IS_EXTERNAL (as_sym)
3970 && ! S_IS_WEAK (as_sym))
3971 sym_ptr->ecoff_sym.asym.st = st_StaticProc;
3972
3973 /* Get the type and storage class based on where
3974 the symbol actually wound up. Traditionally,
3975 N_LBRAC and N_RBRAC are *not* relocated. */
3976 indx = sym_ptr->ecoff_sym.asym.index;
3977 if (sym_ptr->ecoff_sym.asym.st == st_Nil
3978 && sym_ptr->ecoff_sym.asym.sc == sc_Nil
3979 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
3980 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC)
3981 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC))))
3982 {
3983 segT seg;
3984 const char *segname;
3985 st_t st;
3986 sc_t sc;
3987
3988 seg = S_GET_SEGMENT (as_sym);
3989 segname = segment_name (seg);
3990
3991 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
3992 && (S_IS_EXTERNAL (as_sym)
3993 || S_IS_WEAK (as_sym)
3994 || ! S_IS_DEFINED (as_sym)))
3995 {
3996 if ((symbol_get_bfdsym (as_sym)->flags
3997 & BSF_FUNCTION) != 0)
3998 st = st_Proc;
3999 else
4000 st = st_Global;
4001 }
4002 else if (seg == text_section)
4003 st = st_Label;
4004 else
4005 st = st_Static;
4006
4007 if (! S_IS_DEFINED (as_sym))
4008 {
4009 valueT s;
4010
4011 s = symbol_get_obj (as_sym)->ecoff_extern_size;
4012 if (s == 0
4013 || s > bfd_get_gp_size (stdoutput))
4014 sc = sc_Undefined;
4015 else
4016 {
4017 sc = sc_SUndefined;
4018 sym_ptr->ecoff_sym.asym.value = s;
4019 }
4020 #ifdef S_SET_SIZE
4021 S_SET_SIZE (as_sym, s);
4022 #endif
4023 }
4024 else if (S_IS_COMMON (as_sym))
4025 {
4026 if (S_GET_VALUE (as_sym) > 0
4027 && (S_GET_VALUE (as_sym)
4028 <= bfd_get_gp_size (stdoutput)))
4029 sc = sc_SCommon;
4030 else
4031 sc = sc_Common;
4032 }
4033 else if (seg == text_section)
4034 sc = sc_Text;
4035 else if (seg == data_section)
4036 sc = sc_Data;
4037 else if (strcmp (segname, ".rdata") == 0
4038 || strcmp (segname, ".rodata") == 0)
4039 sc = sc_RData;
4040 else if (strcmp (segname, ".sdata") == 0)
4041 sc = sc_SData;
4042 else if (seg == bss_section)
4043 sc = sc_Bss;
4044 else if (strcmp (segname, ".sbss") == 0)
4045 sc = sc_SBss;
4046 else if (seg == bfd_abs_section_ptr)
4047 sc = sc_Abs;
4048 else
4049 {
4050 /* This must be a user named section.
4051 This is not possible in ECOFF, but it
4052 is in ELF. */
4053 sc = sc_Data;
4054 }
4055
4056 sym_ptr->ecoff_sym.asym.st = (int) st;
4057 sym_ptr->ecoff_sym.asym.sc = (int) sc;
4058 }
4059
4060 /* This is just an external symbol if it is
4061 outside a procedure and it has a type.
4062 FIXME: g++ will generate symbols which have
4063 different names in the debugging information
4064 than the actual symbol. Should we handle
4065 them here? */
4066 if ((S_IS_EXTERNAL (as_sym)
4067 || S_IS_WEAK (as_sym)
4068 || ! S_IS_DEFINED (as_sym))
4069 && sym_ptr->proc_ptr == (proc_t *) NULL
4070 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil
4071 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym))
4072 local = 0;
4073
4074 /* This is just an external symbol if it is a
4075 common symbol. */
4076 if (S_IS_COMMON (as_sym))
4077 local = 0;
4078
4079 /* If an st_end symbol has an associated gas
4080 symbol, then it is a local label created for
4081 a .bend or .end directive. Stabs line
4082 numbers will have FAKE_LABEL_CHAR in the names. */
4083 if (local
4084 && sym_ptr->ecoff_sym.asym.st != st_End
4085 && strchr (sym_ptr->name, FAKE_LABEL_CHAR) == 0)
4086 sym_ptr->ecoff_sym.asym.iss =
4087 add_string (&fil_ptr->strings,
4088 fil_ptr->str_hash,
4089 sym_ptr->name,
4090 (shash_t **) NULL);
4091 }
4092
4093 /* We now know the index of this symbol; fill in
4094 locations that have been waiting for that
4095 information. */
4096 if (sym_ptr->begin_ptr != (localsym_t *) NULL)
4097 {
4098 localsym_t *begin_ptr;
4099 st_t begin_type;
4100
4101 know (local);
4102 begin_ptr = sym_ptr->begin_ptr;
4103 know (begin_ptr->sym_index != -1);
4104 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index;
4105 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4106 sym_ptr->ecoff_sym.asym.iss =
4107 begin_ptr->ecoff_sym.asym.iss;
4108
4109 begin_type = (st_t) begin_ptr->ecoff_sym.asym.st;
4110 if (begin_type == st_File
4111 || begin_type == st_Block)
4112 {
4113 begin_ptr->ecoff_sym.asym.index =
4114 isym - ifilesym + 1;
4115 (*swap_sym_out) (stdoutput,
4116 &begin_ptr->ecoff_sym.asym,
4117 (*buf
4118 + offset
4119 + (begin_ptr->sym_index
4120 * external_sym_size)));
4121 }
4122 else
4123 {
4124 know (begin_ptr->index_ptr != (aux_t *) NULL);
4125 begin_ptr->index_ptr->data.isym =
4126 isym - ifilesym + 1;
4127 }
4128
4129 /* The value of the symbol marking the end of a
4130 procedure is the size of the procedure. The
4131 value of the symbol marking the end of a
4132 block is the offset from the start of the
4133 procedure to the block. */
4134 if (begin_type == st_Proc
4135 || begin_type == st_StaticProc)
4136 {
4137 know (as_sym != (symbolS *) NULL);
4138 know (begin_ptr->as_sym != (symbolS *) NULL);
4139 if (S_GET_SEGMENT (as_sym)
4140 != S_GET_SEGMENT (begin_ptr->as_sym))
4141 as_warn (_(".begin/.bend in different segments"));
4142 sym_ptr->ecoff_sym.asym.value =
4143 (S_GET_VALUE (as_sym)
4144 - S_GET_VALUE (begin_ptr->as_sym));
4145
4146 /* If the size is odd, this is probably a
4147 mips16 function; force it to be even. */
4148 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0)
4149 ++sym_ptr->ecoff_sym.asym.value;
4150
4151 #ifdef S_SET_SIZE
4152 S_SET_SIZE (begin_ptr->as_sym,
4153 sym_ptr->ecoff_sym.asym.value);
4154 #endif
4155 }
4156 else if (begin_type == st_Block
4157 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4158 {
4159 symbolS *begin_sym;
4160
4161 know (as_sym != (symbolS *) NULL);
4162 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4163 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4164 if (S_GET_SEGMENT (as_sym)
4165 != S_GET_SEGMENT (begin_sym))
4166 as_warn (_(".begin/.bend in different segments"));
4167 sym_ptr->ecoff_sym.asym.value =
4168 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4169 }
4170 }
4171
4172 for (f = sym_ptr->forward_ref;
4173 f != (forward_t *) NULL;
4174 f = f->next)
4175 {
4176 know (local);
4177 f->ifd_ptr->data.isym = fil_ptr->file_index;
4178 f->index_ptr->data.rndx.index = isym - ifilesym;
4179 }
4180
4181 if (local)
4182 {
4183 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size)
4184 sym_out = ecoff_add_bytes (buf, bufend,
4185 sym_out,
4186 external_sym_size);
4187 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym,
4188 sym_out);
4189 sym_out += external_sym_size;
4190
4191 sym_ptr->sym_index = isym;
4192
4193 if (sym_ptr->proc_ptr != (proc_t *) NULL
4194 && sym_ptr->proc_ptr->sym == sym_ptr)
4195 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym;
4196
4197 ++isym;
4198 }
4199
4200 /* Record the local symbol index and file number in
4201 case this is an external symbol. Note that this
4202 destroys the asym.index field. */
4203 if (as_sym != (symbolS *) NULL
4204 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr)
4205 {
4206 if ((sym_ptr->ecoff_sym.asym.st == st_Proc
4207 || sym_ptr->ecoff_sym.asym.st == st_StaticProc)
4208 && local)
4209 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1;
4210 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index;
4211
4212 /* Don't try to merge an FDR which has an
4213 external symbol attached to it. */
4214 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym))
4215 fil_ptr->fdr.fMerge = 0;
4216 }
4217 }
4218 }
4219 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase;
4220 }
4221 }
4222
4223 return offset + isym * external_sym_size;
4224 }
4225
4226 /* Swap out the procedure information. */
4227
4228 static unsigned long
4229 ecoff_build_procs (const struct ecoff_debug_swap *backend,
4230 char **buf,
4231 char **bufend,
4232 unsigned long offset)
4233 {
4234 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4235 void (* const swap_pdr_out) (bfd *, const PDR *, void *)
4236 = backend->swap_pdr_out;
4237 char *pdr_out;
4238 long iproc;
4239 vlinks_t *file_link;
4240
4241 pdr_out = *buf + offset;
4242
4243 iproc = 0;
4244
4245 /* The procedures are stored by file. */
4246 for (file_link = file_desc.first;
4247 file_link != (vlinks_t *) NULL;
4248 file_link = file_link->next)
4249 {
4250 int fil_cnt;
4251 efdr_t *fil_ptr;
4252 efdr_t *fil_end;
4253
4254 if (file_link->next == (vlinks_t *) NULL)
4255 fil_cnt = file_desc.objects_last_page;
4256 else
4257 fil_cnt = file_desc.objects_per_page;
4258 fil_ptr = file_link->datum->file;
4259 fil_end = fil_ptr + fil_cnt;
4260 for (; fil_ptr < fil_end; fil_ptr++)
4261 {
4262 vlinks_t *proc_link;
4263 int first;
4264
4265 fil_ptr->fdr.ipdFirst = iproc;
4266 first = 1;
4267 for (proc_link = fil_ptr->procs.first;
4268 proc_link != (vlinks_t *) NULL;
4269 proc_link = proc_link->next)
4270 {
4271 int prc_cnt;
4272 proc_t *proc_ptr;
4273 proc_t *proc_end;
4274
4275 if (proc_link->next == (vlinks_t *) NULL)
4276 prc_cnt = fil_ptr->procs.objects_last_page;
4277 else
4278 prc_cnt = fil_ptr->procs.objects_per_page;
4279 proc_ptr = proc_link->datum->proc;
4280 proc_end = proc_ptr + prc_cnt;
4281 for (; proc_ptr < proc_end; proc_ptr++)
4282 {
4283 symbolS *adr_sym;
4284 unsigned long adr;
4285
4286 adr_sym = proc_ptr->sym->as_sym;
4287 adr = (S_GET_VALUE (adr_sym)
4288 + bfd_section_vma (S_GET_SEGMENT (adr_sym)));
4289 if (first)
4290 {
4291 /* This code used to force the adr of the very
4292 first fdr to be 0. However, the native tools
4293 don't do that, and I can't remember why it
4294 used to work that way, so I took it out. */
4295 fil_ptr->fdr.adr = adr;
4296 first = 0;
4297 }
4298 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr;
4299 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size)
4300 pdr_out = ecoff_add_bytes (buf, bufend,
4301 pdr_out,
4302 external_pdr_size);
4303 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out);
4304 pdr_out += external_pdr_size;
4305 ++iproc;
4306 }
4307 }
4308 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst;
4309 }
4310 }
4311
4312 return offset + iproc * external_pdr_size;
4313 }
4314
4315 /* Swap out the aux information. */
4316
4317 static unsigned long
4318 ecoff_build_aux (const struct ecoff_debug_swap *backend,
4319 char **buf,
4320 char **bufend,
4321 unsigned long offset)
4322 {
4323 int bigendian;
4324 union aux_ext *aux_out;
4325 long iaux;
4326 vlinks_t *file_link;
4327
4328 bigendian = bfd_big_endian (stdoutput);
4329
4330 aux_out = (union aux_ext *) (*buf + offset);
4331
4332 iaux = 0;
4333
4334 /* The aux entries are stored by file. */
4335 for (file_link = file_desc.first;
4336 file_link != (vlinks_t *) NULL;
4337 file_link = file_link->next)
4338 {
4339 int fil_cnt;
4340 efdr_t *fil_ptr;
4341 efdr_t *fil_end;
4342
4343 if (file_link->next == (vlinks_t *) NULL)
4344 fil_cnt = file_desc.objects_last_page;
4345 else
4346 fil_cnt = file_desc.objects_per_page;
4347 fil_ptr = file_link->datum->file;
4348 fil_end = fil_ptr + fil_cnt;
4349 for (; fil_ptr < fil_end; fil_ptr++)
4350 {
4351 vlinks_t *aux_link;
4352
4353 fil_ptr->fdr.fBigendian = bigendian;
4354 fil_ptr->fdr.iauxBase = iaux;
4355 for (aux_link = fil_ptr->aux_syms.first;
4356 aux_link != (vlinks_t *) NULL;
4357 aux_link = aux_link->next)
4358 {
4359 int aux_cnt;
4360 aux_t *aux_ptr;
4361 aux_t *aux_end;
4362
4363 if (aux_link->next == (vlinks_t *) NULL)
4364 aux_cnt = fil_ptr->aux_syms.objects_last_page;
4365 else
4366 aux_cnt = fil_ptr->aux_syms.objects_per_page;
4367 aux_ptr = aux_link->datum->aux;
4368 aux_end = aux_ptr + aux_cnt;
4369 for (; aux_ptr < aux_end; aux_ptr++)
4370 {
4371 if ((unsigned long) (*bufend - (char *) aux_out)
4372 < sizeof (union aux_ext))
4373 aux_out = ((union aux_ext *)
4374 ecoff_add_bytes (buf, bufend,
4375 (char *) aux_out,
4376 sizeof (union aux_ext)));
4377 switch (aux_ptr->type)
4378 {
4379 case aux_tir:
4380 (*backend->swap_tir_out) (bigendian,
4381 &aux_ptr->data.ti,
4382 &aux_out->a_ti);
4383 break;
4384 case aux_rndx:
4385 (*backend->swap_rndx_out) (bigendian,
4386 &aux_ptr->data.rndx,
4387 &aux_out->a_rndx);
4388 break;
4389 case aux_dnLow:
4390 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow,
4391 aux_out);
4392 break;
4393 case aux_dnHigh:
4394 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh,
4395 aux_out);
4396 break;
4397 case aux_isym:
4398 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym,
4399 aux_out);
4400 break;
4401 case aux_iss:
4402 AUX_PUT_ISS (bigendian, aux_ptr->data.iss,
4403 aux_out);
4404 break;
4405 case aux_width:
4406 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width,
4407 aux_out);
4408 break;
4409 case aux_count:
4410 AUX_PUT_COUNT (bigendian, aux_ptr->data.count,
4411 aux_out);
4412 break;
4413 }
4414
4415 ++aux_out;
4416 ++iaux;
4417 }
4418 }
4419 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase;
4420 }
4421 }
4422
4423 return ecoff_padding_adjust (backend, buf, bufend,
4424 offset + iaux * sizeof (union aux_ext),
4425 (char **) NULL);
4426 }
4427
4428 /* Copy out the strings from a varray_t. This returns the number of
4429 bytes copied, rather than the new offset. */
4430
4431 static unsigned long
4432 ecoff_build_strings (char **buf,
4433 char **bufend,
4434 unsigned long offset,
4435 varray_t *vp)
4436 {
4437 unsigned long istr;
4438 char *str_out;
4439 vlinks_t *str_link;
4440
4441 str_out = *buf + offset;
4442
4443 istr = 0;
4444
4445 for (str_link = vp->first;
4446 str_link != (vlinks_t *) NULL;
4447 str_link = str_link->next)
4448 {
4449 unsigned long str_cnt;
4450
4451 if (str_link->next == (vlinks_t *) NULL)
4452 str_cnt = vp->objects_last_page;
4453 else
4454 str_cnt = vp->objects_per_page;
4455
4456 if ((unsigned long)(*bufend - str_out) < str_cnt)
4457 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt);
4458
4459 memcpy (str_out, str_link->datum->byte, str_cnt);
4460 str_out += str_cnt;
4461 istr += str_cnt;
4462 }
4463
4464 return istr;
4465 }
4466
4467 /* Dump out the local strings. */
4468
4469 static unsigned long
4470 ecoff_build_ss (const struct ecoff_debug_swap *backend,
4471 char **buf,
4472 char **bufend,
4473 unsigned long offset)
4474 {
4475 long iss;
4476 vlinks_t *file_link;
4477
4478 iss = 0;
4479
4480 for (file_link = file_desc.first;
4481 file_link != (vlinks_t *) NULL;
4482 file_link = file_link->next)
4483 {
4484 int fil_cnt;
4485 efdr_t *fil_ptr;
4486 efdr_t *fil_end;
4487
4488 if (file_link->next == (vlinks_t *) NULL)
4489 fil_cnt = file_desc.objects_last_page;
4490 else
4491 fil_cnt = file_desc.objects_per_page;
4492 fil_ptr = file_link->datum->file;
4493 fil_end = fil_ptr + fil_cnt;
4494 for (; fil_ptr < fil_end; fil_ptr++)
4495 {
4496 long ss_cnt;
4497
4498 fil_ptr->fdr.issBase = iss;
4499 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss,
4500 &fil_ptr->strings);
4501 fil_ptr->fdr.cbSs = ss_cnt;
4502 iss += ss_cnt;
4503 }
4504 }
4505
4506 return ecoff_padding_adjust (backend, buf, bufend, offset + iss,
4507 (char **) NULL);
4508 }
4509
4510 /* Swap out the file descriptors. */
4511
4512 static unsigned long
4513 ecoff_build_fdr (const struct ecoff_debug_swap *backend,
4514 char **buf,
4515 char **bufend,
4516 unsigned long offset)
4517 {
4518 const bfd_size_type external_fdr_size = backend->external_fdr_size;
4519 void (* const swap_fdr_out) (bfd *, const FDR *, void *)
4520 = backend->swap_fdr_out;
4521 long ifile;
4522 char *fdr_out;
4523 vlinks_t *file_link;
4524
4525 ifile = 0;
4526
4527 fdr_out = *buf + offset;
4528
4529 for (file_link = file_desc.first;
4530 file_link != (vlinks_t *) NULL;
4531 file_link = file_link->next)
4532 {
4533 int fil_cnt;
4534 efdr_t *fil_ptr;
4535 efdr_t *fil_end;
4536
4537 if (file_link->next == (vlinks_t *) NULL)
4538 fil_cnt = file_desc.objects_last_page;
4539 else
4540 fil_cnt = file_desc.objects_per_page;
4541 fil_ptr = file_link->datum->file;
4542 fil_end = fil_ptr + fil_cnt;
4543 for (; fil_ptr < fil_end; fil_ptr++)
4544 {
4545 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size)
4546 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out,
4547 external_fdr_size);
4548 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out);
4549 fdr_out += external_fdr_size;
4550 ++ifile;
4551 }
4552 }
4553
4554 return offset + ifile * external_fdr_size;
4555 }
4556
4557 /* Set up the external symbols. These are supposed to be handled by
4558 the backend. This routine just gets the right information and
4559 calls a backend function to deal with it. */
4560
4561 static void
4562 ecoff_setup_ext (void)
4563 {
4564 symbolS *sym;
4565
4566 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4567 {
4568 if (symbol_get_obj (sym)->ecoff_symbol == NULL)
4569 continue;
4570
4571 /* If this is a local symbol, then force the fields to zero. */
4572 if (! S_IS_EXTERNAL (sym)
4573 && ! S_IS_WEAK (sym)
4574 && S_IS_DEFINED (sym))
4575 {
4576 struct localsym *lsym;
4577
4578 lsym = symbol_get_obj (sym)->ecoff_symbol;
4579 lsym->ecoff_sym.asym.value = 0;
4580 lsym->ecoff_sym.asym.st = (int) st_Nil;
4581 lsym->ecoff_sym.asym.sc = (int) sc_Nil;
4582 lsym->ecoff_sym.asym.index = indexNil;
4583 }
4584
4585 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym);
4586 }
4587 }
4588
4589 /* Build the ECOFF debugging information. */
4590
4591 unsigned long
4592 ecoff_build_debug (HDRR *hdr,
4593 char **bufp,
4594 const struct ecoff_debug_swap *backend)
4595 {
4596 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4597 tag_t *ptag;
4598 tag_t *ptag_next;
4599 efdr_t *fil_ptr;
4600 int end_warning;
4601 efdr_t *hold_file_ptr;
4602 proc_t *hold_proc_ptr;
4603 symbolS *sym;
4604 char *buf;
4605 char *bufend;
4606 unsigned long offset;
4607
4608 /* Make sure we have a file. */
4609 if (first_file == (efdr_t *) NULL)
4610 add_file ((const char *) NULL, 0, 1);
4611
4612 /* Handle any top level tags. */
4613 for (ptag = top_tag_head->first_tag;
4614 ptag != (tag_t *) NULL;
4615 ptag = ptag_next)
4616 {
4617 if (ptag->forward_ref != (forward_t *) NULL)
4618 add_unknown_tag (ptag);
4619
4620 ptag_next = ptag->same_block;
4621 ptag->hash_ptr->tag_ptr = ptag->same_name;
4622 free_tag (ptag);
4623 }
4624
4625 free_thead (top_tag_head);
4626
4627 /* Look through the symbols. Add debugging information for each
4628 symbol that has not already received it. */
4629 hold_file_ptr = cur_file_ptr;
4630 hold_proc_ptr = cur_proc_ptr;
4631 cur_proc_ptr = (proc_t *) NULL;
4632 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4633 {
4634 if (symbol_get_obj (sym)->ecoff_symbol != NULL
4635 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL
4636 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0)
4637 continue;
4638
4639 cur_file_ptr = symbol_get_obj (sym)->ecoff_file;
4640 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym,
4641 (bfd_vma) 0, S_GET_VALUE (sym), indexNil);
4642 }
4643 cur_proc_ptr = hold_proc_ptr;
4644 cur_file_ptr = hold_file_ptr;
4645
4646 /* Output an ending symbol for all the files. We have to do this
4647 here for the last file, so we may as well do it for all of the
4648 files. */
4649 end_warning = 0;
4650 for (fil_ptr = first_file;
4651 fil_ptr != (efdr_t *) NULL;
4652 fil_ptr = fil_ptr->next_file)
4653 {
4654 cur_file_ptr = fil_ptr;
4655 while (cur_file_ptr->cur_scope != (scope_t *) NULL
4656 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL)
4657 {
4658 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev;
4659 if (! end_warning && ! cur_file_ptr->fake)
4660 {
4661 as_warn (_("missing .end or .bend at end of file"));
4662 end_warning = 1;
4663 }
4664 }
4665 if (cur_file_ptr->cur_scope != (scope_t *) NULL)
4666 (void) add_ecoff_symbol ((const char *) NULL,
4667 st_End, sc_Text,
4668 (symbolS *) NULL,
4669 (bfd_vma) 0,
4670 (symint_t) 0,
4671 (symint_t) 0);
4672 }
4673
4674 /* Build the symbolic information. */
4675 offset = 0;
4676 buf = XNEWVEC (char, PAGE_SIZE);
4677 bufend = buf + PAGE_SIZE;
4678
4679 /* Build the line number information. */
4680 hdr->cbLineOffset = offset;
4681 offset = ecoff_build_lineno (backend, &buf, &bufend, offset,
4682 &hdr->ilineMax);
4683 hdr->cbLine = offset - hdr->cbLineOffset;
4684
4685 /* We don't use dense numbers at all. */
4686 hdr->idnMax = 0;
4687 hdr->cbDnOffset = 0;
4688
4689 /* We can't build the PDR table until we have built the symbols,
4690 because a PDR contains a symbol index. However, we set aside
4691 space at this point. */
4692 hdr->ipdMax = proc_cnt;
4693 hdr->cbPdOffset = offset;
4694 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size)
4695 (void) ecoff_add_bytes (&buf, &bufend, buf + offset,
4696 proc_cnt * external_pdr_size);
4697 offset += proc_cnt * external_pdr_size;
4698
4699 /* Build the local symbols. */
4700 hdr->cbSymOffset = offset;
4701 offset = ecoff_build_symbols (backend, &buf, &bufend, offset);
4702 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size;
4703
4704 /* Building the symbols initializes the symbol index in the PDR's.
4705 Now we can swap out the PDR's. */
4706 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset);
4707
4708 /* We don't use optimization symbols. */
4709 hdr->ioptMax = 0;
4710 hdr->cbOptOffset = 0;
4711
4712 /* Swap out the auxiliary type information. */
4713 hdr->cbAuxOffset = offset;
4714 offset = ecoff_build_aux (backend, &buf, &bufend, offset);
4715 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext);
4716
4717 /* Copy out the local strings. */
4718 hdr->cbSsOffset = offset;
4719 offset = ecoff_build_ss (backend, &buf, &bufend, offset);
4720 hdr->issMax = offset - hdr->cbSsOffset;
4721
4722 /* We don't use relative file descriptors. */
4723 hdr->crfd = 0;
4724 hdr->cbRfdOffset = 0;
4725
4726 /* Swap out the file descriptors. */
4727 hdr->cbFdOffset = offset;
4728 offset = ecoff_build_fdr (backend, &buf, &bufend, offset);
4729 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size;
4730
4731 /* Set up the external symbols, which are handled by the BFD back
4732 end. */
4733 hdr->issExtMax = 0;
4734 hdr->cbSsExtOffset = 0;
4735 hdr->iextMax = 0;
4736 hdr->cbExtOffset = 0;
4737 ecoff_setup_ext ();
4738
4739 know ((offset & (backend->debug_align - 1)) == 0);
4740
4741 /* FIXME: This value should be determined from the .verstamp directive,
4742 with reasonable defaults in config files. */
4743 #ifdef TC_ALPHA
4744 hdr->vstamp = 0x030b;
4745 #else
4746 hdr->vstamp = 0x020b;
4747 #endif
4748
4749 *bufp = buf;
4750 return offset;
4751 }
4752 \f
4753 /* Allocate a cluster of pages. */
4754
4755 #ifndef MALLOC_CHECK
4756
4757 static page_type *
4758 allocate_cluster (unsigned long npages)
4759 {
4760 page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE);
4761
4762 #ifdef ECOFF_DEBUG
4763 if (debug > 3)
4764 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value);
4765 #endif
4766
4767 memset (value, 0, npages * PAGE_USIZE);
4768
4769 return value;
4770 }
4771
4772 static page_type *cluster_ptr = NULL;
4773 static unsigned long pages_left = 0;
4774
4775 #endif /* MALLOC_CHECK */
4776
4777 /* Allocate one page (which is initialized to 0). */
4778
4779 static page_type *
4780 allocate_page (void)
4781 {
4782 #ifndef MALLOC_CHECK
4783
4784 if (pages_left == 0)
4785 {
4786 pages_left = MAX_CLUSTER_PAGES;
4787 cluster_ptr = allocate_cluster (pages_left);
4788 }
4789
4790 pages_left--;
4791 return cluster_ptr++;
4792
4793 #else /* MALLOC_CHECK */
4794
4795 page_type *ptr;
4796
4797 ptr = xmalloc (PAGE_USIZE);
4798 memset (ptr, 0, PAGE_USIZE);
4799 return ptr;
4800
4801 #endif /* MALLOC_CHECK */
4802 }
4803 \f
4804 /* Allocate scoping information. */
4805
4806 static scope_t *
4807 allocate_scope (void)
4808 {
4809 scope_t *ptr;
4810
4811 #ifndef MALLOC_CHECK
4812
4813 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4814 if (ptr != (scope_t *) NULL)
4815 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free;
4816 else
4817 {
4818 int unallocated = alloc_counts[(int) alloc_type_scope].unallocated;
4819 page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page;
4820
4821 if (unallocated == 0)
4822 {
4823 unallocated = PAGE_SIZE / sizeof (scope_t);
4824 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page ();
4825 alloc_counts[(int) alloc_type_scope].total_pages++;
4826 }
4827
4828 ptr = &cur_page->scope[--unallocated];
4829 alloc_counts[(int) alloc_type_scope].unallocated = unallocated;
4830 }
4831
4832 #else
4833
4834 ptr = XNEW (scope_t);
4835
4836 #endif
4837
4838 alloc_counts[(int) alloc_type_scope].total_alloc++;
4839 memset (ptr, 0, sizeof (*ptr));
4840 return ptr;
4841 }
4842
4843 /* Free scoping information. */
4844
4845 static void
4846 free_scope (scope_t *ptr)
4847 {
4848 alloc_counts[(int) alloc_type_scope].total_free++;
4849
4850 #ifndef MALLOC_CHECK
4851 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4852 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr;
4853 #else
4854 free ((void *) ptr);
4855 #endif
4856 }
4857 \f
4858 /* Allocate links for pages in a virtual array. */
4859
4860 static vlinks_t *
4861 allocate_vlinks (void)
4862 {
4863 vlinks_t *ptr;
4864
4865 #ifndef MALLOC_CHECK
4866
4867 int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated;
4868 page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page;
4869
4870 if (unallocated == 0)
4871 {
4872 unallocated = PAGE_SIZE / sizeof (vlinks_t);
4873 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page ();
4874 alloc_counts[(int) alloc_type_vlinks].total_pages++;
4875 }
4876
4877 ptr = &cur_page->vlinks[--unallocated];
4878 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated;
4879
4880 #else
4881
4882 ptr = XNEW (vlinks_t);
4883
4884 #endif
4885
4886 alloc_counts[(int) alloc_type_vlinks].total_alloc++;
4887 memset (ptr, 0, sizeof (*ptr));
4888 return ptr;
4889 }
4890 \f
4891 /* Allocate string hash buckets. */
4892
4893 static shash_t *
4894 allocate_shash (void)
4895 {
4896 shash_t *ptr;
4897
4898 #ifndef MALLOC_CHECK
4899
4900 int unallocated = alloc_counts[(int) alloc_type_shash].unallocated;
4901 page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page;
4902
4903 if (unallocated == 0)
4904 {
4905 unallocated = PAGE_SIZE / sizeof (shash_t);
4906 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page ();
4907 alloc_counts[(int) alloc_type_shash].total_pages++;
4908 }
4909
4910 ptr = &cur_page->shash[--unallocated];
4911 alloc_counts[(int) alloc_type_shash].unallocated = unallocated;
4912
4913 #else
4914
4915 ptr = XNEW (shash_t);
4916
4917 #endif
4918
4919 alloc_counts[(int) alloc_type_shash].total_alloc++;
4920 memset (ptr, 0, sizeof (*ptr));
4921 return ptr;
4922 }
4923 \f
4924 /* Allocate type hash buckets. */
4925
4926 static thash_t *
4927 allocate_thash (void)
4928 {
4929 thash_t *ptr;
4930
4931 #ifndef MALLOC_CHECK
4932
4933 int unallocated = alloc_counts[(int) alloc_type_thash].unallocated;
4934 page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page;
4935
4936 if (unallocated == 0)
4937 {
4938 unallocated = PAGE_SIZE / sizeof (thash_t);
4939 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page ();
4940 alloc_counts[(int) alloc_type_thash].total_pages++;
4941 }
4942
4943 ptr = &cur_page->thash[--unallocated];
4944 alloc_counts[(int) alloc_type_thash].unallocated = unallocated;
4945
4946 #else
4947
4948 ptr = XNEW (thash_t);
4949
4950 #endif
4951
4952 alloc_counts[(int) alloc_type_thash].total_alloc++;
4953 memset (ptr, 0, sizeof (*ptr));
4954 return ptr;
4955 }
4956 \f
4957 /* Allocate structure, union, or enum tag information. */
4958
4959 static tag_t *
4960 allocate_tag (void)
4961 {
4962 tag_t *ptr;
4963
4964 #ifndef MALLOC_CHECK
4965
4966 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
4967 if (ptr != (tag_t *) NULL)
4968 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free;
4969 else
4970 {
4971 int unallocated = alloc_counts[(int) alloc_type_tag].unallocated;
4972 page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page;
4973
4974 if (unallocated == 0)
4975 {
4976 unallocated = PAGE_SIZE / sizeof (tag_t);
4977 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page ();
4978 alloc_counts[(int) alloc_type_tag].total_pages++;
4979 }
4980
4981 ptr = &cur_page->tag[--unallocated];
4982 alloc_counts[(int) alloc_type_tag].unallocated = unallocated;
4983 }
4984
4985 #else
4986
4987 ptr = XNEW (tag_t);
4988
4989 #endif
4990
4991 alloc_counts[(int) alloc_type_tag].total_alloc++;
4992 memset (ptr, 0, sizeof (*ptr));
4993 return ptr;
4994 }
4995
4996 /* Free scoping information. */
4997
4998 static void
4999 free_tag (tag_t *ptr)
5000 {
5001 alloc_counts[(int) alloc_type_tag].total_free++;
5002
5003 #ifndef MALLOC_CHECK
5004 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
5005 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr;
5006 #else
5007 free ((PTR_T) ptr);
5008 #endif
5009 }
5010 \f
5011 /* Allocate forward reference to a yet unknown tag. */
5012
5013 static forward_t *
5014 allocate_forward (void)
5015 {
5016 forward_t *ptr;
5017
5018 #ifndef MALLOC_CHECK
5019
5020 int unallocated = alloc_counts[(int) alloc_type_forward].unallocated;
5021 page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page;
5022
5023 if (unallocated == 0)
5024 {
5025 unallocated = PAGE_SIZE / sizeof (forward_t);
5026 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page ();
5027 alloc_counts[(int) alloc_type_forward].total_pages++;
5028 }
5029
5030 ptr = &cur_page->forward[--unallocated];
5031 alloc_counts[(int) alloc_type_forward].unallocated = unallocated;
5032
5033 #else
5034
5035 ptr = XNEW (forward_t);
5036
5037 #endif
5038
5039 alloc_counts[(int) alloc_type_forward].total_alloc++;
5040 memset (ptr, 0, sizeof (*ptr));
5041 return ptr;
5042 }
5043 \f
5044 /* Allocate head of type hash list. */
5045
5046 static thead_t *
5047 allocate_thead (void)
5048 {
5049 thead_t *ptr;
5050
5051 #ifndef MALLOC_CHECK
5052
5053 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5054 if (ptr != (thead_t *) NULL)
5055 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free;
5056 else
5057 {
5058 int unallocated = alloc_counts[(int) alloc_type_thead].unallocated;
5059 page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page;
5060
5061 if (unallocated == 0)
5062 {
5063 unallocated = PAGE_SIZE / sizeof (thead_t);
5064 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page ();
5065 alloc_counts[(int) alloc_type_thead].total_pages++;
5066 }
5067
5068 ptr = &cur_page->thead[--unallocated];
5069 alloc_counts[(int) alloc_type_thead].unallocated = unallocated;
5070 }
5071
5072 #else
5073
5074 ptr = XNEW (thead_t);
5075
5076 #endif
5077
5078 alloc_counts[(int) alloc_type_thead].total_alloc++;
5079 memset (ptr, 0, sizeof (*ptr));
5080 return ptr;
5081 }
5082
5083 /* Free scoping information. */
5084
5085 static void
5086 free_thead (thead_t *ptr)
5087 {
5088 alloc_counts[(int) alloc_type_thead].total_free++;
5089
5090 #ifndef MALLOC_CHECK
5091 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5092 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr;
5093 #else
5094 free ((PTR_T) ptr);
5095 #endif
5096 }
5097 \f
5098 static lineno_list_t *
5099 allocate_lineno_list (void)
5100 {
5101 lineno_list_t *ptr;
5102
5103 #ifndef MALLOC_CHECK
5104
5105 int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated;
5106 page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page;
5107
5108 if (unallocated == 0)
5109 {
5110 unallocated = PAGE_SIZE / sizeof (lineno_list_t);
5111 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page ();
5112 alloc_counts[(int) alloc_type_lineno].total_pages++;
5113 }
5114
5115 ptr = &cur_page->lineno[--unallocated];
5116 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated;
5117
5118 #else
5119
5120 ptr = XNEW (lineno_list_t);
5121
5122 #endif
5123
5124 alloc_counts[(int) alloc_type_lineno].total_alloc++;
5125 memset (ptr, 0, sizeof (*ptr));
5126 return ptr;
5127 }
5128
5129 void
5130 ecoff_set_gp_prolog_size (int sz)
5131 {
5132 if (cur_proc_ptr == 0)
5133 return;
5134
5135 cur_proc_ptr->pdr.gp_prologue = sz;
5136 if (cur_proc_ptr->pdr.gp_prologue != sz)
5137 {
5138 as_warn (_("GP prologue size exceeds field size, using 0 instead"));
5139 cur_proc_ptr->pdr.gp_prologue = 0;
5140 }
5141
5142 cur_proc_ptr->pdr.gp_used = 1;
5143 }
5144
5145 int
5146 ecoff_no_current_file (void)
5147 {
5148 return cur_file_ptr == (efdr_t *) NULL;
5149 }
5150
5151 void
5152 ecoff_generate_asm_lineno (void)
5153 {
5154 unsigned int lineno;
5155 const char *filename;
5156 lineno_list_t *list;
5157
5158 filename = as_where (&lineno);
5159
5160 if (current_stabs_filename == (char *) NULL
5161 || filename_cmp (current_stabs_filename, filename))
5162 add_file (filename, 0, 1);
5163
5164 list = allocate_lineno_list ();
5165
5166 list->next = (lineno_list_t *) NULL;
5167 list->file = cur_file_ptr;
5168 list->proc = cur_proc_ptr;
5169 list->frag = frag_now;
5170 list->paddr = frag_now_fix ();
5171 list->lineno = lineno;
5172
5173 /* We don't want to merge files which have line numbers. */
5174 cur_file_ptr->fdr.fMerge = 0;
5175
5176 /* A .loc directive will sometimes appear before a .ent directive,
5177 which means that cur_proc_ptr will be NULL here. Arrange to
5178 patch this up. */
5179 if (cur_proc_ptr == (proc_t *) NULL)
5180 {
5181 lineno_list_t **pl;
5182
5183 pl = &noproc_lineno;
5184 while (*pl != (lineno_list_t *) NULL)
5185 pl = &(*pl)->next;
5186 *pl = list;
5187 }
5188 else
5189 {
5190 last_lineno = list;
5191 *last_lineno_ptr = list;
5192 last_lineno_ptr = &list->next;
5193 }
5194 }
5195
5196 #else
5197
5198 void
5199 ecoff_generate_asm_lineno (void)
5200 {
5201 }
5202
5203 #endif /* ECOFF_DEBUGGING */
The GNU Binutils are a collection of binary tools.