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