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Fix advance/until and multiple locations (PR gdb/26524)
[thirdparty/binutils-gdb.git] / gas / ecoff.c
1 /* ECOFF debugging support.
2 Copyright (C) 1993-2020 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
4 This file was put together by Ian Lance Taylor <ian@cygnus.com>. A
5 good deal of it comes directly from mips-tfile.c, by Michael
6 Meissner <meissner@osf.org>.
7
8 This file is part of GAS.
9
10 GAS is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3, or (at your option)
13 any later version.
14
15 GAS is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with GAS; see the file COPYING. If not, write to the Free
22 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23 02110-1301, USA. */
24
25 #include "as.h"
26
27 /* This file is compiled conditionally for those targets which use
28 ECOFF debugging information (e.g., MIPS ELF, Alpha ECOFF). */
29
30 #include "ecoff.h"
31
32 #ifdef ECOFF_DEBUGGING
33
34 #include "coff/internal.h"
35 #include "coff/symconst.h"
36 #include "aout/stab_gnu.h"
37 #include "filenames.h"
38 #include "safe-ctype.h"
39
40 /* Why isn't this in coff/sym.h? */
41 #define ST_RFDESCAPE 0xfff
42
43 /* This file constructs the information used by the ECOFF debugging
44 format. It just builds a large block of data.
45
46 We support both ECOFF style debugging and stabs debugging (the
47 stabs symbols are encapsulated in ECOFF symbols). This should let
48 us handle anything the compiler might throw at us. */
49
50 /* Here is a brief description of the MIPS ECOFF symbol table, by
51 Michael Meissner. The MIPS symbol table has the following pieces:
52
53 Symbolic Header
54 |
55 +-- Auxiliary Symbols
56 |
57 +-- Dense number table
58 |
59 +-- Optimizer Symbols
60 |
61 +-- External Strings
62 |
63 +-- External Symbols
64 |
65 +-- Relative file descriptors
66 |
67 +-- File table
68 |
69 +-- Procedure table
70 |
71 +-- Line number table
72 |
73 +-- Local Strings
74 |
75 +-- Local Symbols
76
77 The symbolic header points to each of the other tables, and also
78 contains the number of entries. It also contains a magic number
79 and MIPS compiler version number, such as 2.0.
80
81 The auxiliary table is a series of 32 bit integers, that are
82 referenced as needed from the local symbol table. Unlike standard
83 COFF, the aux. information does not follow the symbol that uses
84 it, but rather is a separate table. In theory, this would allow
85 the MIPS compilers to collapse duplicate aux. entries, but I've not
86 noticed this happening with the 1.31 compiler suite. The different
87 types of aux. entries are:
88
89 1) dnLow: Low bound on array dimension.
90
91 2) dnHigh: High bound on array dimension.
92
93 3) isym: Index to the local symbol which is the start of the
94 function for the end of function first aux. entry.
95
96 4) width: Width of structures and bitfields.
97
98 5) count: Count of ranges for variant part.
99
100 6) rndx: A relative index into the symbol table. The relative
101 index field has two parts: rfd which is a pointer into the
102 relative file index table or ST_RFDESCAPE which says the next
103 aux. entry is the file number, and index: which is the pointer
104 into the local symbol within a given file table. This is for
105 things like references to types defined in another file.
106
107 7) Type information: This is like the COFF type bits, except it
108 is 32 bits instead of 16; they still have room to add new
109 basic types; and they can handle more than 6 levels of array,
110 pointer, function, etc. Each type information field contains
111 the following structure members:
112
113 a) fBitfield: a bit that says this is a bitfield, and the
114 size in bits follows as the next aux. entry.
115
116 b) continued: a bit that says the next aux. entry is a
117 continuation of the current type information (in case
118 there are more than 6 levels of array/ptr/function).
119
120 c) bt: an integer containing the base type before adding
121 array, pointer, function, etc. qualifiers. The
122 current base types that I have documentation for are:
123
124 btNil -- undefined
125 btAdr -- address - integer same size as ptr
126 btChar -- character
127 btUChar -- unsigned character
128 btShort -- short
129 btUShort -- unsigned short
130 btInt -- int
131 btUInt -- unsigned int
132 btLong -- long
133 btULong -- unsigned long
134 btFloat -- float (real)
135 btDouble -- Double (real)
136 btStruct -- Structure (Record)
137 btUnion -- Union (variant)
138 btEnum -- Enumerated
139 btTypedef -- defined via a typedef isymRef
140 btRange -- subrange of int
141 btSet -- pascal sets
142 btComplex -- fortran complex
143 btDComplex -- fortran double complex
144 btIndirect -- forward or unnamed typedef
145 btFixedDec -- Fixed Decimal
146 btFloatDec -- Float Decimal
147 btString -- Varying Length Character String
148 btBit -- Aligned Bit String
149 btPicture -- Picture
150 btVoid -- Void (MIPS cc revision >= 2.00)
151
152 d) tq0 - tq5: type qualifier fields as needed. The
153 current type qualifier fields I have documentation for
154 are:
155
156 tqNil -- no more qualifiers
157 tqPtr -- pointer
158 tqProc -- procedure
159 tqArray -- array
160 tqFar -- 8086 far pointers
161 tqVol -- volatile
162
163 The dense number table is used in the front ends, and disappears by
164 the time the .o is created.
165
166 With the 1.31 compiler suite, the optimization symbols don't seem
167 to be used as far as I can tell.
168
169 The linker is the first entity that creates the relative file
170 descriptor table, and I believe it is used so that the individual
171 file table pointers don't have to be rewritten when the objects are
172 merged together into the program file.
173
174 Unlike COFF, the basic symbol & string tables are split into
175 external and local symbols/strings. The relocation information
176 only goes off of the external symbol table, and the debug
177 information only goes off of the internal symbol table. The
178 external symbols can have links to an appropriate file index and
179 symbol within the file to give it the appropriate type information.
180 Because of this, the external symbols are actually larger than the
181 internal symbols (to contain the link information), and contain the
182 local symbol structure as a member, though this member is not the
183 first member of the external symbol structure (!). I suspect this
184 split is to make strip easier to deal with.
185
186 Each file table has offsets for where the line numbers, local
187 strings, local symbols, and procedure table starts from within the
188 global tables, and the indices are reset to 0 for each of those
189 tables for the file.
190
191 The procedure table contains the binary equivalents of the .ent
192 (start of the function address), .frame (what register is the
193 virtual frame pointer, constant offset from the register to obtain
194 the VFP, and what register holds the return address), .mask/.fmask
195 (bitmask of saved registers, and where the first register is stored
196 relative to the VFP) assembler directives. It also contains the
197 low and high bounds of the line numbers if debugging is turned on.
198
199 The line number table is a compressed form of the normal COFF line
200 table. Each line number entry is either 1 or 3 bytes long, and
201 contains a signed delta from the previous line, and an unsigned
202 count of the number of instructions this statement takes.
203
204 The local symbol table contains the following fields:
205
206 1) iss: index to the local string table giving the name of the
207 symbol.
208
209 2) value: value of the symbol (address, register number, etc.).
210
211 3) st: symbol type. The current symbol types are:
212
213 stNil -- Nuthin' special
214 stGlobal -- external symbol
215 stStatic -- static
216 stParam -- procedure argument
217 stLocal -- local variable
218 stLabel -- label
219 stProc -- External Procedure
220 stBlock -- beginning of block
221 stEnd -- end (of anything)
222 stMember -- member (of anything)
223 stTypedef -- type definition
224 stFile -- file name
225 stRegReloc -- register relocation
226 stForward -- forwarding address
227 stStaticProc -- Static procedure
228 stConstant -- const
229
230 4) sc: storage class. The current storage classes are:
231
232 scText -- text symbol
233 scData -- initialized data symbol
234 scBss -- un-initialized data symbol
235 scRegister -- value of symbol is register number
236 scAbs -- value of symbol is absolute
237 scUndefined -- who knows?
238 scCdbLocal -- variable's value is IN se->va.??
239 scBits -- this is a bit field
240 scCdbSystem -- value is IN debugger's address space
241 scRegImage -- register value saved on stack
242 scInfo -- symbol contains debugger information
243 scUserStruct -- addr in struct user for current process
244 scSData -- load time only small data
245 scSBss -- load time only small common
246 scRData -- load time only read only data
247 scVar -- Var parameter (fortranpascal)
248 scCommon -- common variable
249 scSCommon -- small common
250 scVarRegister -- Var parameter in a register
251 scVariant -- Variant record
252 scSUndefined -- small undefined(external) data
253 scInit -- .init section symbol
254
255 5) index: pointer to a local symbol or aux. entry.
256
257 For the following program:
258
259 #include <stdio.h>
260
261 main(){
262 printf("Hello World!\n");
263 return 0;
264 }
265
266 Mips-tdump produces the following information:
267
268 Global file header:
269 magic number 0x162
270 # sections 2
271 timestamp 645311799, Wed Jun 13 17:16:39 1990
272 symbolic header offset 284
273 symbolic header size 96
274 optional header 56
275 flags 0x0
276
277 Symbolic header, magic number = 0x7009, vstamp = 1.31:
278
279 Info Offset Number Bytes
280 ==== ====== ====== =====
281
282 Line numbers 380 4 4 [13]
283 Dense numbers 0 0 0
284 Procedures Tables 384 1 52
285 Local Symbols 436 16 192
286 Optimization Symbols 0 0 0
287 Auxiliary Symbols 628 39 156
288 Local Strings 784 80 80
289 External Strings 864 144 144
290 File Tables 1008 2 144
291 Relative Files 0 0 0
292 External Symbols 1152 20 320
293
294 File #0, "hello2.c"
295
296 Name index = 1 Readin = No
297 Merge = No Endian = LITTLE
298 Debug level = G2 Language = C
299 Adr = 0x00000000
300
301 Info Start Number Size Offset
302 ==== ===== ====== ==== ======
303 Local strings 0 15 15 784
304 Local symbols 0 6 72 436
305 Line numbers 0 13 13 380
306 Optimization symbols 0 0 0 0
307 Procedures 0 1 52 384
308 Auxiliary symbols 0 14 56 628
309 Relative Files 0 0 0 0
310
311 There are 6 local symbols, starting at 436
312
313 Symbol# 0: "hello2.c"
314 End+1 symbol = 6
315 String index = 1
316 Storage class = Text Index = 6
317 Symbol type = File Value = 0
318
319 Symbol# 1: "main"
320 End+1 symbol = 5
321 Type = int
322 String index = 10
323 Storage class = Text Index = 12
324 Symbol type = Proc Value = 0
325
326 Symbol# 2: ""
327 End+1 symbol = 4
328 String index = 0
329 Storage class = Text Index = 4
330 Symbol type = Block Value = 8
331
332 Symbol# 3: ""
333 First symbol = 2
334 String index = 0
335 Storage class = Text Index = 2
336 Symbol type = End Value = 28
337
338 Symbol# 4: "main"
339 First symbol = 1
340 String index = 10
341 Storage class = Text Index = 1
342 Symbol type = End Value = 52
343
344 Symbol# 5: "hello2.c"
345 First symbol = 0
346 String index = 1
347 Storage class = Text Index = 0
348 Symbol type = End Value = 0
349
350 There are 14 auxiliary table entries, starting at 628.
351
352 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
353 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
354 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0]
355 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0]
356 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
357 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0]
358 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0]
359 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0]
360 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0]
361 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0]
362 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0]
363 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0]
364 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0]
365 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
366
367 There are 1 procedure descriptor entries, starting at 0.
368
369 Procedure descriptor 0:
370 Name index = 10 Name = "main"
371 .mask 0x80000000,-4 .fmask 0x00000000,0
372 .frame $29,24,$31
373 Opt. start = -1 Symbols start = 1
374 First line # = 3 Last line # = 6
375 Line Offset = 0 Address = 0x00000000
376
377 There are 4 bytes holding line numbers, starting at 380.
378 Line 3, delta 0, count 2
379 Line 4, delta 1, count 3
380 Line 5, delta 1, count 2
381 Line 6, delta 1, count 6
382
383 File #1, "/usr/include/stdio.h"
384
385 Name index = 1 Readin = No
386 Merge = Yes Endian = LITTLE
387 Debug level = G2 Language = C
388 Adr = 0x00000000
389
390 Info Start Number Size Offset
391 ==== ===== ====== ==== ======
392 Local strings 15 65 65 799
393 Local symbols 6 10 120 508
394 Line numbers 0 0 0 380
395 Optimization symbols 0 0 0 0
396 Procedures 1 0 0 436
397 Auxiliary symbols 14 25 100 684
398 Relative Files 0 0 0 0
399
400 There are 10 local symbols, starting at 442
401
402 Symbol# 0: "/usr/include/stdio.h"
403 End+1 symbol = 10
404 String index = 1
405 Storage class = Text Index = 10
406 Symbol type = File Value = 0
407
408 Symbol# 1: "_iobuf"
409 End+1 symbol = 9
410 String index = 22
411 Storage class = Info Index = 9
412 Symbol type = Block Value = 20
413
414 Symbol# 2: "_cnt"
415 Type = int
416 String index = 29
417 Storage class = Info Index = 4
418 Symbol type = Member Value = 0
419
420 Symbol# 3: "_ptr"
421 Type = ptr to char
422 String index = 34
423 Storage class = Info Index = 15
424 Symbol type = Member Value = 32
425
426 Symbol# 4: "_base"
427 Type = ptr to char
428 String index = 39
429 Storage class = Info Index = 16
430 Symbol type = Member Value = 64
431
432 Symbol# 5: "_bufsiz"
433 Type = int
434 String index = 45
435 Storage class = Info Index = 4
436 Symbol type = Member Value = 96
437
438 Symbol# 6: "_flag"
439 Type = short
440 String index = 53
441 Storage class = Info Index = 3
442 Symbol type = Member Value = 128
443
444 Symbol# 7: "_file"
445 Type = char
446 String index = 59
447 Storage class = Info Index = 2
448 Symbol type = Member Value = 144
449
450 Symbol# 8: ""
451 First symbol = 1
452 String index = 0
453 Storage class = Info Index = 1
454 Symbol type = End Value = 0
455
456 Symbol# 9: "/usr/include/stdio.h"
457 First symbol = 0
458 String index = 1
459 Storage class = Text Index = 0
460 Symbol type = End Value = 0
461
462 There are 25 auxiliary table entries, starting at 642.
463
464 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f]
465 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
466 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
467 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0]
468 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1]
469 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
470 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4]
471 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
472 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
473 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0]
474 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0]
475 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
476 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
477 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
478 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
479 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
480 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
481 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
482 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
483 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
484 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
485 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
486 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
487 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
488 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
489
490 There are 0 procedure descriptor entries, starting at 1.
491
492 There are 20 external symbols, starting at 1152
493
494 Symbol# 0: "_iob"
495 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 }
496 String index = 0 Ifd = 1
497 Storage class = Nil Index = 17
498 Symbol type = Global Value = 60
499
500 Symbol# 1: "fopen"
501 String index = 5 Ifd = 1
502 Storage class = Nil Index = 1048575
503 Symbol type = Proc Value = 0
504
505 Symbol# 2: "fdopen"
506 String index = 11 Ifd = 1
507 Storage class = Nil Index = 1048575
508 Symbol type = Proc Value = 0
509
510 Symbol# 3: "freopen"
511 String index = 18 Ifd = 1
512 Storage class = Nil Index = 1048575
513 Symbol type = Proc Value = 0
514
515 Symbol# 4: "popen"
516 String index = 26 Ifd = 1
517 Storage class = Nil Index = 1048575
518 Symbol type = Proc Value = 0
519
520 Symbol# 5: "tmpfile"
521 String index = 32 Ifd = 1
522 Storage class = Nil Index = 1048575
523 Symbol type = Proc Value = 0
524
525 Symbol# 6: "ftell"
526 String index = 40 Ifd = 1
527 Storage class = Nil Index = 1048575
528 Symbol type = Proc Value = 0
529
530 Symbol# 7: "rewind"
531 String index = 46 Ifd = 1
532 Storage class = Nil Index = 1048575
533 Symbol type = Proc Value = 0
534
535 Symbol# 8: "setbuf"
536 String index = 53 Ifd = 1
537 Storage class = Nil Index = 1048575
538 Symbol type = Proc Value = 0
539
540 Symbol# 9: "setbuffer"
541 String index = 60 Ifd = 1
542 Storage class = Nil Index = 1048575
543 Symbol type = Proc Value = 0
544
545 Symbol# 10: "setlinebuf"
546 String index = 70 Ifd = 1
547 Storage class = Nil Index = 1048575
548 Symbol type = Proc Value = 0
549
550 Symbol# 11: "fgets"
551 String index = 81 Ifd = 1
552 Storage class = Nil Index = 1048575
553 Symbol type = Proc Value = 0
554
555 Symbol# 12: "gets"
556 String index = 87 Ifd = 1
557 Storage class = Nil Index = 1048575
558 Symbol type = Proc Value = 0
559
560 Symbol# 13: "ctermid"
561 String index = 92 Ifd = 1
562 Storage class = Nil Index = 1048575
563 Symbol type = Proc Value = 0
564
565 Symbol# 14: "cuserid"
566 String index = 100 Ifd = 1
567 Storage class = Nil Index = 1048575
568 Symbol type = Proc Value = 0
569
570 Symbol# 15: "tempnam"
571 String index = 108 Ifd = 1
572 Storage class = Nil Index = 1048575
573 Symbol type = Proc Value = 0
574
575 Symbol# 16: "tmpnam"
576 String index = 116 Ifd = 1
577 Storage class = Nil Index = 1048575
578 Symbol type = Proc Value = 0
579
580 Symbol# 17: "sprintf"
581 String index = 123 Ifd = 1
582 Storage class = Nil Index = 1048575
583 Symbol type = Proc Value = 0
584
585 Symbol# 18: "main"
586 Type = int
587 String index = 131 Ifd = 0
588 Storage class = Text Index = 1
589 Symbol type = Proc Value = 0
590
591 Symbol# 19: "printf"
592 String index = 136 Ifd = 0
593 Storage class = Undefined Index = 1048575
594 Symbol type = Proc Value = 0
595
596 The following auxiliary table entries were unused:
597
598 #0 0 0x00000000 void
599 #2 8 0x00000008 char
600 #3 16 0x00000010 short
601 #4 24 0x00000018 int
602 #5 32 0x00000020 long
603 #6 40 0x00000028 float
604 #7 44 0x0000002c double
605 #8 12 0x0000000c unsigned char
606 #9 20 0x00000014 unsigned short
607 #10 28 0x0000001c unsigned int
608 #11 36 0x00000024 unsigned long
609 #14 0 0x00000000 void
610 #15 24 0x00000018 int
611 #19 32 0x00000020 long
612 #20 40 0x00000028 float
613 #21 44 0x0000002c double
614 #22 12 0x0000000c unsigned char
615 #23 20 0x00000014 unsigned short
616 #24 28 0x0000001c unsigned int
617 #25 36 0x00000024 unsigned long
618 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 }
619 */
620 \f
621 /* Redefinition of storage classes as an enumeration for better
622 debugging. */
623
624 typedef enum sc {
625 sc_Nil = scNil, /* no storage class */
626 sc_Text = scText, /* text symbol */
627 sc_Data = scData, /* initialized data symbol */
628 sc_Bss = scBss, /* un-initialized data symbol */
629 sc_Register = scRegister, /* value of symbol is register number */
630 sc_Abs = scAbs, /* value of symbol is absolute */
631 sc_Undefined = scUndefined, /* who knows? */
632 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */
633 sc_Bits = scBits, /* this is a bit field */
634 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */
635 sc_RegImage = scRegImage, /* register value saved on stack */
636 sc_Info = scInfo, /* symbol contains debugger information */
637 sc_UserStruct = scUserStruct, /* addr in struct user for current process */
638 sc_SData = scSData, /* load time only small data */
639 sc_SBss = scSBss, /* load time only small common */
640 sc_RData = scRData, /* load time only read only data */
641 sc_Var = scVar, /* Var parameter (fortran,pascal) */
642 sc_Common = scCommon, /* common variable */
643 sc_SCommon = scSCommon, /* small common */
644 sc_VarRegister = scVarRegister, /* Var parameter in a register */
645 sc_Variant = scVariant, /* Variant record */
646 sc_SUndefined = scSUndefined, /* small undefined(external) data */
647 sc_Init = scInit, /* .init section symbol */
648 sc_Max = scMax /* Max storage class+1 */
649 } sc_t;
650
651 /* Redefinition of symbol type. */
652
653 typedef enum st {
654 st_Nil = stNil, /* Nuthin' special */
655 st_Global = stGlobal, /* external symbol */
656 st_Static = stStatic, /* static */
657 st_Param = stParam, /* procedure argument */
658 st_Local = stLocal, /* local variable */
659 st_Label = stLabel, /* label */
660 st_Proc = stProc, /* " " Procedure */
661 st_Block = stBlock, /* beginning of block */
662 st_End = stEnd, /* end (of anything) */
663 st_Member = stMember, /* member (of anything - struct/union/enum */
664 st_Typedef = stTypedef, /* type definition */
665 st_File = stFile, /* file name */
666 st_RegReloc = stRegReloc, /* register relocation */
667 st_Forward = stForward, /* forwarding address */
668 st_StaticProc = stStaticProc, /* load time only static procs */
669 st_Constant = stConstant, /* const */
670 st_Str = stStr, /* string */
671 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */
672 st_Expr = stExpr, /* 2+2 vs. 4 */
673 st_Type = stType, /* post-coercion SER */
674 st_Max = stMax /* max type+1 */
675 } st_t;
676
677 /* Redefinition of type qualifiers. */
678
679 typedef enum tq {
680 tq_Nil = tqNil, /* bt is what you see */
681 tq_Ptr = tqPtr, /* pointer */
682 tq_Proc = tqProc, /* procedure */
683 tq_Array = tqArray, /* duh */
684 tq_Far = tqFar, /* longer addressing - 8086/8 land */
685 tq_Vol = tqVol, /* volatile */
686 tq_Max = tqMax /* Max type qualifier+1 */
687 } tq_t;
688
689 /* Redefinition of basic types. */
690
691 typedef enum bt {
692 bt_Nil = btNil, /* undefined */
693 bt_Adr = btAdr, /* address - integer same size as pointer */
694 bt_Char = btChar, /* character */
695 bt_UChar = btUChar, /* unsigned character */
696 bt_Short = btShort, /* short */
697 bt_UShort = btUShort, /* unsigned short */
698 bt_Int = btInt, /* int */
699 bt_UInt = btUInt, /* unsigned int */
700 bt_Long = btLong, /* long */
701 bt_ULong = btULong, /* unsigned long */
702 bt_Float = btFloat, /* float (real) */
703 bt_Double = btDouble, /* Double (real) */
704 bt_Struct = btStruct, /* Structure (Record) */
705 bt_Union = btUnion, /* Union (variant) */
706 bt_Enum = btEnum, /* Enumerated */
707 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */
708 bt_Range = btRange, /* subrange of int */
709 bt_Set = btSet, /* pascal sets */
710 bt_Complex = btComplex, /* fortran complex */
711 bt_DComplex = btDComplex, /* fortran double complex */
712 bt_Indirect = btIndirect, /* forward or unnamed typedef */
713 bt_FixedDec = btFixedDec, /* Fixed Decimal */
714 bt_FloatDec = btFloatDec, /* Float Decimal */
715 bt_String = btString, /* Varying Length Character String */
716 bt_Bit = btBit, /* Aligned Bit String */
717 bt_Picture = btPicture, /* Picture */
718 bt_Void = btVoid, /* Void */
719 bt_Max = btMax /* Max basic type+1 */
720 } bt_t;
721
722 #define N_TQ itqMax
723
724 /* States for whether to hash type or not. */
725 typedef enum hash_state {
726 hash_no = 0, /* Don't hash type */
727 hash_yes = 1, /* OK to hash type, or use previous hash */
728 hash_record = 2 /* OK to record hash, but don't use prev. */
729 } hash_state_t;
730
731 /* Types of different sized allocation requests. */
732 enum alloc_type {
733 alloc_type_none, /* dummy value */
734 alloc_type_scope, /* nested scopes linked list */
735 alloc_type_vlinks, /* glue linking pages in varray */
736 alloc_type_shash, /* string hash element */
737 alloc_type_thash, /* type hash element */
738 alloc_type_tag, /* struct/union/tag element */
739 alloc_type_forward, /* element to hold unknown tag */
740 alloc_type_thead, /* head of type hash list */
741 alloc_type_varray, /* general varray allocation */
742 alloc_type_lineno, /* line number list */
743 alloc_type_last /* last+1 element for array bounds */
744 };
745
746 /* Types of auxiliary type information. */
747 enum aux_type {
748 aux_tir, /* TIR type information */
749 aux_rndx, /* relative index into symbol table */
750 aux_dnLow, /* low dimension */
751 aux_dnHigh, /* high dimension */
752 aux_isym, /* symbol table index (end of proc) */
753 aux_iss, /* index into string space (not used) */
754 aux_width, /* width for non-default sized struc fields */
755 aux_count /* count of ranges for variant arm */
756 };
757 \f
758 /* Structures to provide n-number of virtual arrays, each of which can
759 grow linearly, and which are written in the object file as
760 sequential pages. On systems with a BSD malloc, the
761 MAX_CLUSTER_PAGES should be 1 less than a power of two, since
762 malloc adds it's overhead, and rounds up to the next power of 2.
763 Pages are linked together via a linked list.
764
765 If PAGE_SIZE is > 4096, the string length in the shash_t structure
766 can't be represented (assuming there are strings > 4096 bytes). */
767
768 /* FIXME: Yes, there can be such strings while emitting C++ class debug
769 info. Templates are the offender here, the test case in question
770 having a mangled class name of
771
772 t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\
773 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey
774
775 Repeat that a couple dozen times while listing the class members and
776 you've got strings over 4k. Hack around this for now by increasing
777 the page size. A proper solution would abandon this structure scheme
778 certainly for very large strings, and possibly entirely. */
779
780 #ifndef PAGE_SIZE
781 #define PAGE_SIZE (8*1024) /* size of varray pages */
782 #endif
783
784 #define PAGE_USIZE ((unsigned long) PAGE_SIZE)
785
786 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */
787 #define MAX_CLUSTER_PAGES 63
788 #endif
789
790 /* Linked list connecting separate page allocations. */
791 typedef struct vlinks {
792 struct vlinks *prev; /* previous set of pages */
793 struct vlinks *next; /* next set of pages */
794 union page *datum; /* start of page */
795 unsigned long start_index; /* starting index # of page */
796 } vlinks_t;
797
798 /* Virtual array header. */
799 typedef struct varray {
800 vlinks_t *first; /* first page link */
801 vlinks_t *last; /* last page link */
802 unsigned long num_allocated; /* # objects allocated */
803 unsigned short object_size; /* size in bytes of each object */
804 unsigned short objects_per_page; /* # objects that can fit on a page */
805 unsigned short objects_last_page; /* # objects allocated on last page */
806 } varray_t;
807
808 #ifndef MALLOC_CHECK
809 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type))
810 #else
811 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE)
812 #endif
813
814 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \
815 (vlinks_t *)0, /* first */ \
816 (vlinks_t *)0, /* last */ \
817 0, /* num_allocated */ \
818 sizeof (type), /* object_size */ \
819 OBJECTS_PER_PAGE (type), /* objects_per_page */ \
820 OBJECTS_PER_PAGE (type), /* objects_last_page */ \
821 }
822
823 /* Master type for indexes within the symbol table. */
824 typedef unsigned long symint_t;
825
826 /* Linked list support for nested scopes (file, block, structure, etc.). */
827 typedef struct scope {
828 struct scope *prev; /* previous scope level */
829 struct scope *free; /* free list pointer */
830 struct localsym *lsym; /* pointer to local symbol node */
831 st_t type; /* type of the node */
832 } scope_t;
833
834 /* For a local symbol we store a gas symbol as well as the debugging
835 information we generate. The gas symbol will be NULL if this is
836 only a debugging symbol. */
837 typedef struct localsym {
838 const char *name; /* symbol name */
839 symbolS *as_sym; /* symbol as seen by gas */
840 bfd_vma addend; /* addend to as_sym value */
841 struct efdr *file_ptr; /* file pointer */
842 struct ecoff_proc *proc_ptr; /* proc pointer */
843 struct localsym *begin_ptr; /* symbol at start of block */
844 struct ecoff_aux *index_ptr; /* index value to be filled in */
845 struct forward *forward_ref; /* forward references to this symbol */
846 long sym_index; /* final symbol index */
847 EXTR ecoff_sym; /* ECOFF debugging symbol */
848 } localsym_t;
849
850 /* For aux information we keep the type and the data. */
851 typedef struct ecoff_aux {
852 enum aux_type type; /* aux type */
853 AUXU data; /* aux data */
854 } aux_t;
855
856 /* For a procedure we store the gas symbol as well as the PDR
857 debugging information. */
858 typedef struct ecoff_proc {
859 localsym_t *sym; /* associated symbol */
860 PDR pdr; /* ECOFF debugging info */
861 } proc_t;
862
863 /* Number of proc_t structures allocated. */
864 static unsigned long proc_cnt;
865
866 /* Forward reference list for tags referenced, but not yet defined. */
867 typedef struct forward {
868 struct forward *next; /* next forward reference */
869 struct forward *free; /* free list pointer */
870 aux_t *ifd_ptr; /* pointer to store file index */
871 aux_t *index_ptr; /* pointer to store symbol index */
872 } forward_t;
873
874 /* Linked list support for tags. The first tag in the list is always
875 the current tag for that block. */
876 typedef struct tag {
877 struct tag *free; /* free list pointer */
878 struct shash *hash_ptr; /* pointer to the hash table head */
879 struct tag *same_name; /* tag with same name in outer scope */
880 struct tag *same_block; /* next tag defined in the same block. */
881 struct forward *forward_ref; /* list of forward references */
882 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
883 symint_t ifd; /* file # tag defined in */
884 localsym_t *sym; /* file's local symbols */
885 } tag_t;
886
887 /* Head of a block's linked list of tags. */
888 typedef struct thead {
889 struct thead *prev; /* previous block */
890 struct thead *free; /* free list pointer */
891 struct tag *first_tag; /* first tag in block defined */
892 } thead_t;
893
894 /* Union containing pointers to each the small structures which are freed up. */
895 typedef union small_free {
896 scope_t *f_scope; /* scope structure */
897 thead_t *f_thead; /* tag head structure */
898 tag_t *f_tag; /* tag element structure */
899 forward_t *f_forward; /* forward tag reference */
900 } small_free_t;
901
902 /* String hash table entry. */
903
904 typedef struct shash {
905 char *string; /* string we are hashing */
906 symint_t indx; /* index within string table */
907 EXTR *esym_ptr; /* global symbol pointer */
908 localsym_t *sym_ptr; /* local symbol pointer */
909 localsym_t *end_ptr; /* symbol pointer to end block */
910 tag_t *tag_ptr; /* tag pointer */
911 proc_t *proc_ptr; /* procedure descriptor pointer */
912 } shash_t;
913
914 /* Type hash table support. The size of the hash table must fit
915 within a page with the other extended file descriptor information.
916 Because unique types which are hashed are fewer in number than
917 strings, we use a smaller hash value. */
918
919 #define HASHBITS 30
920
921 #ifndef THASH_SIZE
922 #define THASH_SIZE 113
923 #endif
924
925 typedef struct thash {
926 struct thash *next; /* next hash value */
927 AUXU type; /* type we are hashing */
928 symint_t indx; /* index within string table */
929 } thash_t;
930
931 /* Extended file descriptor that contains all of the support necessary
932 to add things to each file separately. */
933 typedef struct efdr {
934 FDR fdr; /* File header to be written out */
935 FDR *orig_fdr; /* original file header */
936 char *name; /* filename */
937 int fake; /* whether this is faked .file */
938 symint_t void_type; /* aux. pointer to 'void' type */
939 symint_t int_type; /* aux. pointer to 'int' type */
940 scope_t *cur_scope; /* current nested scopes */
941 symint_t file_index; /* current file number */
942 int nested_scopes; /* # nested scopes */
943 varray_t strings; /* local strings */
944 varray_t symbols; /* local symbols */
945 varray_t procs; /* procedures */
946 varray_t aux_syms; /* auxiliary symbols */
947 struct efdr *next_file; /* next file descriptor */
948 /* string/type hash tables */
949 htab_t str_hash; /* string hash table */
950 thash_t *thash_head[THASH_SIZE];
951 } efdr_t;
952
953 /* Pre-initialized extended file structure. */
954 static const efdr_t init_file = {
955 { /* FDR structure */
956 0, /* adr: memory address of beginning of file */
957 0, /* rss: file name (of source, if known) */
958 0, /* issBase: file's string space */
959 0, /* cbSs: number of bytes in the ss */
960 0, /* isymBase: beginning of symbols */
961 0, /* csym: count file's of symbols */
962 0, /* ilineBase: file's line symbols */
963 0, /* cline: count of file's line symbols */
964 0, /* ioptBase: file's optimization entries */
965 0, /* copt: count of file's optimization entries */
966 0, /* ipdFirst: start of procedures for this file */
967 0, /* cpd: count of procedures for this file */
968 0, /* iauxBase: file's auxiliary entries */
969 0, /* caux: count of file's auxiliary entries */
970 0, /* rfdBase: index into the file indirect table */
971 0, /* crfd: count file indirect entries */
972 langC, /* lang: language for this file */
973 1, /* fMerge: whether this file can be merged */
974 0, /* fReadin: true if read in (not just created) */
975 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */
976 GLEVEL_2, /* glevel: level this file was compiled with */
977 0, /* reserved: reserved for future use */
978 0, /* cbLineOffset: byte offset from header for this file ln's */
979 0, /* cbLine: size of lines for this file */
980 },
981
982 (FDR *)0, /* orig_fdr: original file header pointer */
983 (char *)0, /* name: pointer to filename */
984 0, /* fake: whether this is a faked .file */
985 0, /* void_type: ptr to aux node for void type */
986 0, /* int_type: ptr to aux node for int type */
987 (scope_t *)0, /* cur_scope: current scope being processed */
988 0, /* file_index: current file # */
989 0, /* nested_scopes: # nested scopes */
990 INIT_VARRAY (char), /* strings: local string varray */
991 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */
992 INIT_VARRAY (proc_t), /* procs: procedure varray */
993 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */
994
995 (struct efdr *)0, /* next_file: next file structure */
996
997 (htab_t)0, /* str_hash: string hash table */
998 { 0 }, /* thash_head: type hash table */
999 };
1000
1001 static efdr_t *first_file; /* first file descriptor */
1002 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */
1003
1004 /* Line number information is kept in a list until the assembly is
1005 finished. */
1006 typedef struct lineno_list {
1007 struct lineno_list *next; /* next element in list */
1008 efdr_t *file; /* file this line is in */
1009 proc_t *proc; /* procedure this line is in */
1010 fragS *frag; /* fragment this line number is in */
1011 unsigned long paddr; /* offset within fragment */
1012 long lineno; /* actual line number */
1013 } lineno_list_t;
1014
1015 static lineno_list_t *first_lineno;
1016 static lineno_list_t *last_lineno;
1017 static lineno_list_t **last_lineno_ptr = &first_lineno;
1018
1019 /* Sometimes there will be some .loc statements before a .ent. We
1020 keep them in this list so that we can fill in the procedure pointer
1021 after we see the .ent. */
1022 static lineno_list_t *noproc_lineno;
1023
1024 /* Union of various things that are held in pages. */
1025 typedef union page {
1026 char byte [ PAGE_SIZE ];
1027 unsigned char ubyte [ PAGE_SIZE ];
1028 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ];
1029 FDR ofile [ PAGE_SIZE / sizeof (FDR) ];
1030 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ];
1031 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ];
1032 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ];
1033 DNR dense [ PAGE_SIZE / sizeof (DNR) ];
1034 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ];
1035 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ];
1036 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ];
1037 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ];
1038 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ];
1039 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ];
1040 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ];
1041 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ];
1042 } page_type;
1043
1044 /* Structure holding allocation information for small sized structures. */
1045 typedef struct alloc_info {
1046 char *alloc_name; /* name of this allocation type (must be first) */
1047 page_type *cur_page; /* current page being allocated from */
1048 small_free_t free_list; /* current free list if any */
1049 int unallocated; /* number of elements unallocated on page */
1050 int total_alloc; /* total number of allocations */
1051 int total_free; /* total number of frees */
1052 int total_pages; /* total number of pages allocated */
1053 } alloc_info_t;
1054
1055 /* Type information collected together. */
1056 typedef struct type_info {
1057 bt_t basic_type; /* basic type */
1058 int orig_type; /* original COFF-based type */
1059 int num_tq; /* # type qualifiers */
1060 int num_dims; /* # dimensions */
1061 int num_sizes; /* # sizes */
1062 int extra_sizes; /* # extra sizes not tied with dims */
1063 tag_t * tag_ptr; /* tag pointer */
1064 int bitfield; /* symbol is a bitfield */
1065 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/
1066 symint_t dimensions [N_TQ]; /* dimensions for each array */
1067 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of
1068 struct/union/enum + bitfield size */
1069 } type_info_t;
1070
1071 /* Pre-initialized type_info struct. */
1072 static const type_info_t type_info_init = {
1073 bt_Nil, /* basic type */
1074 T_NULL, /* original COFF-based type */
1075 0, /* # type qualifiers */
1076 0, /* # dimensions */
1077 0, /* # sizes */
1078 0, /* sizes not tied with dims */
1079 NULL, /* ptr to tag */
1080 0, /* bitfield */
1081 { /* type qualifiers */
1082 tq_Nil,
1083 tq_Nil,
1084 tq_Nil,
1085 tq_Nil,
1086 tq_Nil,
1087 tq_Nil,
1088 },
1089 { /* dimensions */
1090 0,
1091 0,
1092 0,
1093 0,
1094 0,
1095 0
1096 },
1097 { /* sizes */
1098 0,
1099 0,
1100 0,
1101 0,
1102 0,
1103 0,
1104 0,
1105 0,
1106 },
1107 };
1108
1109 /* Global hash table for the tags table and global table for file
1110 descriptors. */
1111
1112 static varray_t file_desc = INIT_VARRAY (efdr_t);
1113
1114 static htab_t tag_hash;
1115
1116 /* Static types for int and void. Also, remember the last function's
1117 type (which is set up when we encounter the declaration for the
1118 function, and used when the end block for the function is emitted. */
1119
1120 static type_info_t int_type_info;
1121 static type_info_t void_type_info;
1122 static type_info_t last_func_type_info;
1123 static symbolS *last_func_sym_value;
1124
1125 /* Convert COFF basic type to ECOFF basic type. The T_NULL type
1126 really should use bt_Void, but this causes the current ecoff GDB to
1127 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS
1128 2.0) doesn't understand it, even though the compiler generates it.
1129 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler
1130 suite, but for now go with what works.
1131
1132 It would make sense for the .type and .scl directives to use the
1133 ECOFF numbers directly, rather than using the COFF numbers and
1134 mapping them. Unfortunately, this is historically what mips-tfile
1135 expects, and changing gcc now would be a considerable pain (the
1136 native compiler generates debugging information internally, rather
1137 than via the assembler, so it will never use .type or .scl). */
1138
1139 static const bt_t map_coff_types[] = {
1140 bt_Nil, /* T_NULL */
1141 bt_Nil, /* T_ARG */
1142 bt_Char, /* T_CHAR */
1143 bt_Short, /* T_SHORT */
1144 bt_Int, /* T_INT */
1145 bt_Long, /* T_LONG */
1146 bt_Float, /* T_FLOAT */
1147 bt_Double, /* T_DOUBLE */
1148 bt_Struct, /* T_STRUCT */
1149 bt_Union, /* T_UNION */
1150 bt_Enum, /* T_ENUM */
1151 bt_Enum, /* T_MOE */
1152 bt_UChar, /* T_UCHAR */
1153 bt_UShort, /* T_USHORT */
1154 bt_UInt, /* T_UINT */
1155 bt_ULong /* T_ULONG */
1156 };
1157
1158 /* Convert COFF storage class to ECOFF storage class. */
1159 static const sc_t map_coff_storage[] = {
1160 sc_Nil, /* 0: C_NULL */
1161 sc_Abs, /* 1: C_AUTO auto var */
1162 sc_Undefined, /* 2: C_EXT external */
1163 sc_Data, /* 3: C_STAT static */
1164 sc_Register, /* 4: C_REG register */
1165 sc_Undefined, /* 5: C_EXTDEF ??? */
1166 sc_Text, /* 6: C_LABEL label */
1167 sc_Text, /* 7: C_ULABEL user label */
1168 sc_Info, /* 8: C_MOS member of struct */
1169 sc_Abs, /* 9: C_ARG argument */
1170 sc_Info, /* 10: C_STRTAG struct tag */
1171 sc_Info, /* 11: C_MOU member of union */
1172 sc_Info, /* 12: C_UNTAG union tag */
1173 sc_Info, /* 13: C_TPDEF typedef */
1174 sc_Data, /* 14: C_USTATIC ??? */
1175 sc_Info, /* 15: C_ENTAG enum tag */
1176 sc_Info, /* 16: C_MOE member of enum */
1177 sc_Register, /* 17: C_REGPARM register parameter */
1178 sc_Bits, /* 18; C_FIELD bitfield */
1179 sc_Nil, /* 19 */
1180 sc_Nil, /* 20 */
1181 sc_Nil, /* 21 */
1182 sc_Nil, /* 22 */
1183 sc_Nil, /* 23 */
1184 sc_Nil, /* 24 */
1185 sc_Nil, /* 25 */
1186 sc_Nil, /* 26 */
1187 sc_Nil, /* 27 */
1188 sc_Nil, /* 28 */
1189 sc_Nil, /* 29 */
1190 sc_Nil, /* 30 */
1191 sc_Nil, /* 31 */
1192 sc_Nil, /* 32 */
1193 sc_Nil, /* 33 */
1194 sc_Nil, /* 34 */
1195 sc_Nil, /* 35 */
1196 sc_Nil, /* 36 */
1197 sc_Nil, /* 37 */
1198 sc_Nil, /* 38 */
1199 sc_Nil, /* 39 */
1200 sc_Nil, /* 40 */
1201 sc_Nil, /* 41 */
1202 sc_Nil, /* 42 */
1203 sc_Nil, /* 43 */
1204 sc_Nil, /* 44 */
1205 sc_Nil, /* 45 */
1206 sc_Nil, /* 46 */
1207 sc_Nil, /* 47 */
1208 sc_Nil, /* 48 */
1209 sc_Nil, /* 49 */
1210 sc_Nil, /* 50 */
1211 sc_Nil, /* 51 */
1212 sc_Nil, /* 52 */
1213 sc_Nil, /* 53 */
1214 sc_Nil, /* 54 */
1215 sc_Nil, /* 55 */
1216 sc_Nil, /* 56 */
1217 sc_Nil, /* 57 */
1218 sc_Nil, /* 58 */
1219 sc_Nil, /* 59 */
1220 sc_Nil, /* 60 */
1221 sc_Nil, /* 61 */
1222 sc_Nil, /* 62 */
1223 sc_Nil, /* 63 */
1224 sc_Nil, /* 64 */
1225 sc_Nil, /* 65 */
1226 sc_Nil, /* 66 */
1227 sc_Nil, /* 67 */
1228 sc_Nil, /* 68 */
1229 sc_Nil, /* 69 */
1230 sc_Nil, /* 70 */
1231 sc_Nil, /* 71 */
1232 sc_Nil, /* 72 */
1233 sc_Nil, /* 73 */
1234 sc_Nil, /* 74 */
1235 sc_Nil, /* 75 */
1236 sc_Nil, /* 76 */
1237 sc_Nil, /* 77 */
1238 sc_Nil, /* 78 */
1239 sc_Nil, /* 79 */
1240 sc_Nil, /* 80 */
1241 sc_Nil, /* 81 */
1242 sc_Nil, /* 82 */
1243 sc_Nil, /* 83 */
1244 sc_Nil, /* 84 */
1245 sc_Nil, /* 85 */
1246 sc_Nil, /* 86 */
1247 sc_Nil, /* 87 */
1248 sc_Nil, /* 88 */
1249 sc_Nil, /* 89 */
1250 sc_Nil, /* 90 */
1251 sc_Nil, /* 91 */
1252 sc_Nil, /* 92 */
1253 sc_Nil, /* 93 */
1254 sc_Nil, /* 94 */
1255 sc_Nil, /* 95 */
1256 sc_Nil, /* 96 */
1257 sc_Nil, /* 97 */
1258 sc_Nil, /* 98 */
1259 sc_Nil, /* 99 */
1260 sc_Text, /* 100: C_BLOCK block start/end */
1261 sc_Text, /* 101: C_FCN function start/end */
1262 sc_Info, /* 102: C_EOS end of struct/union/enum */
1263 sc_Nil, /* 103: C_FILE file start */
1264 sc_Nil, /* 104: C_LINE line number */
1265 sc_Nil, /* 105: C_ALIAS combined type info */
1266 sc_Nil, /* 106: C_HIDDEN ??? */
1267 };
1268
1269 /* Convert COFF storage class to ECOFF symbol type. */
1270 static const st_t map_coff_sym_type[] = {
1271 st_Nil, /* 0: C_NULL */
1272 st_Local, /* 1: C_AUTO auto var */
1273 st_Global, /* 2: C_EXT external */
1274 st_Static, /* 3: C_STAT static */
1275 st_Local, /* 4: C_REG register */
1276 st_Global, /* 5: C_EXTDEF ??? */
1277 st_Label, /* 6: C_LABEL label */
1278 st_Label, /* 7: C_ULABEL user label */
1279 st_Member, /* 8: C_MOS member of struct */
1280 st_Param, /* 9: C_ARG argument */
1281 st_Block, /* 10: C_STRTAG struct tag */
1282 st_Member, /* 11: C_MOU member of union */
1283 st_Block, /* 12: C_UNTAG union tag */
1284 st_Typedef, /* 13: C_TPDEF typedef */
1285 st_Static, /* 14: C_USTATIC ??? */
1286 st_Block, /* 15: C_ENTAG enum tag */
1287 st_Member, /* 16: C_MOE member of enum */
1288 st_Param, /* 17: C_REGPARM register parameter */
1289 st_Member, /* 18; C_FIELD bitfield */
1290 st_Nil, /* 19 */
1291 st_Nil, /* 20 */
1292 st_Nil, /* 21 */
1293 st_Nil, /* 22 */
1294 st_Nil, /* 23 */
1295 st_Nil, /* 24 */
1296 st_Nil, /* 25 */
1297 st_Nil, /* 26 */
1298 st_Nil, /* 27 */
1299 st_Nil, /* 28 */
1300 st_Nil, /* 29 */
1301 st_Nil, /* 30 */
1302 st_Nil, /* 31 */
1303 st_Nil, /* 32 */
1304 st_Nil, /* 33 */
1305 st_Nil, /* 34 */
1306 st_Nil, /* 35 */
1307 st_Nil, /* 36 */
1308 st_Nil, /* 37 */
1309 st_Nil, /* 38 */
1310 st_Nil, /* 39 */
1311 st_Nil, /* 40 */
1312 st_Nil, /* 41 */
1313 st_Nil, /* 42 */
1314 st_Nil, /* 43 */
1315 st_Nil, /* 44 */
1316 st_Nil, /* 45 */
1317 st_Nil, /* 46 */
1318 st_Nil, /* 47 */
1319 st_Nil, /* 48 */
1320 st_Nil, /* 49 */
1321 st_Nil, /* 50 */
1322 st_Nil, /* 51 */
1323 st_Nil, /* 52 */
1324 st_Nil, /* 53 */
1325 st_Nil, /* 54 */
1326 st_Nil, /* 55 */
1327 st_Nil, /* 56 */
1328 st_Nil, /* 57 */
1329 st_Nil, /* 58 */
1330 st_Nil, /* 59 */
1331 st_Nil, /* 60 */
1332 st_Nil, /* 61 */
1333 st_Nil, /* 62 */
1334 st_Nil, /* 63 */
1335 st_Nil, /* 64 */
1336 st_Nil, /* 65 */
1337 st_Nil, /* 66 */
1338 st_Nil, /* 67 */
1339 st_Nil, /* 68 */
1340 st_Nil, /* 69 */
1341 st_Nil, /* 70 */
1342 st_Nil, /* 71 */
1343 st_Nil, /* 72 */
1344 st_Nil, /* 73 */
1345 st_Nil, /* 74 */
1346 st_Nil, /* 75 */
1347 st_Nil, /* 76 */
1348 st_Nil, /* 77 */
1349 st_Nil, /* 78 */
1350 st_Nil, /* 79 */
1351 st_Nil, /* 80 */
1352 st_Nil, /* 81 */
1353 st_Nil, /* 82 */
1354 st_Nil, /* 83 */
1355 st_Nil, /* 84 */
1356 st_Nil, /* 85 */
1357 st_Nil, /* 86 */
1358 st_Nil, /* 87 */
1359 st_Nil, /* 88 */
1360 st_Nil, /* 89 */
1361 st_Nil, /* 90 */
1362 st_Nil, /* 91 */
1363 st_Nil, /* 92 */
1364 st_Nil, /* 93 */
1365 st_Nil, /* 94 */
1366 st_Nil, /* 95 */
1367 st_Nil, /* 96 */
1368 st_Nil, /* 97 */
1369 st_Nil, /* 98 */
1370 st_Nil, /* 99 */
1371 st_Block, /* 100: C_BLOCK block start/end */
1372 st_Proc, /* 101: C_FCN function start/end */
1373 st_End, /* 102: C_EOS end of struct/union/enum */
1374 st_File, /* 103: C_FILE file start */
1375 st_Nil, /* 104: C_LINE line number */
1376 st_Nil, /* 105: C_ALIAS combined type info */
1377 st_Nil, /* 106: C_HIDDEN ??? */
1378 };
1379
1380 /* Keep track of different sized allocation requests. */
1381 static alloc_info_t alloc_counts[(int) alloc_type_last];
1382 \f
1383 /* Record whether we have seen any debugging information. */
1384 int ecoff_debugging_seen = 0;
1385
1386 /* Various statics. */
1387 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */
1388 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */
1389 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */
1390 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */
1391 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */
1392 #ifdef ECOFF_DEBUG
1393 static int debug = 0; /* trace functions */
1394 #endif
1395 static int stabs_seen = 0; /* != 0 if stabs have been seen */
1396
1397 static int current_file_idx;
1398 static const char *current_stabs_filename;
1399
1400 /* Pseudo symbol to use when putting stabs into the symbol table. */
1401 #ifndef STABS_SYMBOL
1402 #define STABS_SYMBOL "@stabs"
1403 #endif
1404
1405 static char stabs_symbol[] = STABS_SYMBOL;
1406 \f
1407 /* Prototypes for functions defined in this file. */
1408
1409 static void add_varray_page (varray_t *vp);
1410 static symint_t add_string (varray_t *vp,
1411 htab_t hash_tbl,
1412 const char *str,
1413 shash_t **ret_hash);
1414 static localsym_t *add_ecoff_symbol (const char *str, st_t type,
1415 sc_t storage, symbolS *sym,
1416 bfd_vma addend, symint_t value,
1417 symint_t indx);
1418 static symint_t add_aux_sym_symint (symint_t aux_word);
1419 static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index);
1420 static symint_t add_aux_sym_tir (type_info_t *t,
1421 hash_state_t state,
1422 thash_t **hash_tbl);
1423 static tag_t *get_tag (const char *tag, localsym_t *sym, bt_t basic_type);
1424 static void add_unknown_tag (tag_t *ptag);
1425 static void add_procedure (char *func, int aent);
1426 static void add_file (const char *file_name, int indx, int fake);
1427 #ifdef ECOFF_DEBUG
1428 static char *sc_to_string (sc_t storage_class);
1429 static char *st_to_string (st_t symbol_type);
1430 #endif
1431 static void mark_stabs (int);
1432 static char *ecoff_add_bytes (char **buf, char **bufend,
1433 char *bufptr, unsigned long need);
1434 static unsigned long ecoff_padding_adjust
1435 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1436 unsigned long offset, char **bufptrptr);
1437 static unsigned long ecoff_build_lineno
1438 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1439 unsigned long offset, long *linecntptr);
1440 static unsigned long ecoff_build_symbols
1441 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1442 unsigned long offset);
1443 static unsigned long ecoff_build_procs
1444 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1445 unsigned long offset);
1446 static unsigned long ecoff_build_aux
1447 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1448 unsigned long offset);
1449 static unsigned long ecoff_build_strings (char **buf, char **bufend,
1450 unsigned long offset,
1451 varray_t *vp);
1452 static unsigned long ecoff_build_ss
1453 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1454 unsigned long offset);
1455 static unsigned long ecoff_build_fdr
1456 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1457 unsigned long offset);
1458 static void ecoff_setup_ext (void);
1459 static page_type *allocate_cluster (unsigned long npages);
1460 static page_type *allocate_page (void);
1461 static scope_t *allocate_scope (void);
1462 static void free_scope (scope_t *ptr);
1463 static vlinks_t *allocate_vlinks (void);
1464 static shash_t *allocate_shash (void);
1465 static thash_t *allocate_thash (void);
1466 static tag_t *allocate_tag (void);
1467 static void free_tag (tag_t *ptr);
1468 static forward_t *allocate_forward (void);
1469 static thead_t *allocate_thead (void);
1470 static void free_thead (thead_t *ptr);
1471 static lineno_list_t *allocate_lineno_list (void);
1472 \f
1473 /* This function should be called when the assembler starts up. */
1474
1475 void
1476 ecoff_read_begin_hook (void)
1477 {
1478 tag_hash = str_htab_create ();
1479 top_tag_head = allocate_thead ();
1480 top_tag_head->first_tag = (tag_t *) NULL;
1481 top_tag_head->free = (thead_t *) NULL;
1482 top_tag_head->prev = cur_tag_head;
1483 cur_tag_head = top_tag_head;
1484 }
1485
1486 /* This function should be called when a symbol is created. */
1487
1488 void
1489 ecoff_symbol_new_hook (symbolS *symbolP)
1490 {
1491 OBJ_SYMFIELD_TYPE *obj;
1492
1493 /* Make sure that we have a file pointer, but only if we have seen a
1494 file. If we haven't seen a file, then this is a probably special
1495 symbol created by md_begin which may required special handling at
1496 some point. Creating a dummy file with a dummy name is certainly
1497 wrong. */
1498 if (cur_file_ptr == (efdr_t *) NULL
1499 && seen_at_least_1_file ())
1500 add_file ((const char *) NULL, 0, 1);
1501 obj = symbol_get_obj (symbolP);
1502 obj->ecoff_file = cur_file_ptr;
1503 obj->ecoff_symbol = NULL;
1504 obj->ecoff_extern_size = 0;
1505 }
1506
1507 void
1508 ecoff_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP)
1509 {
1510 OBJ_SYMFIELD_TYPE *n, *o;
1511
1512 n = symbol_get_obj (newsymP);
1513 o = symbol_get_obj (orgsymP);
1514 memcpy (n, o, sizeof *n);
1515 }
1516 \f
1517 /* Add a page to a varray object. */
1518
1519 static void
1520 add_varray_page (varray_t *vp /* varray to add page to */)
1521 {
1522 vlinks_t *new_links = allocate_vlinks ();
1523
1524 #ifdef MALLOC_CHECK
1525 if (vp->object_size > 1)
1526 new_links->datum = (page_type *) xcalloc (1, vp->object_size);
1527 else
1528 #endif
1529 new_links->datum = allocate_page ();
1530
1531 alloc_counts[(int) alloc_type_varray].total_alloc++;
1532 alloc_counts[(int) alloc_type_varray].total_pages++;
1533
1534 new_links->start_index = vp->num_allocated;
1535 vp->objects_last_page = 0;
1536
1537 if (vp->first == (vlinks_t *) NULL) /* first allocation? */
1538 vp->first = vp->last = new_links;
1539 else
1540 { /* 2nd or greater allocation */
1541 new_links->prev = vp->last;
1542 vp->last->next = new_links;
1543 vp->last = new_links;
1544 }
1545 }
1546 \f
1547 /* Add a string (and null pad) to one of the string tables. */
1548
1549 static symint_t
1550 add_string (varray_t *vp, /* string obstack */
1551 htab_t hash_tbl, /* ptr to hash table */
1552 const char *str, /* string */
1553 shash_t **ret_hash /* return hash pointer */)
1554 {
1555 unsigned long len = strlen (str);
1556 shash_t *hash_ptr;
1557
1558 if (len >= PAGE_USIZE)
1559 as_fatal (_("string too big (%lu bytes)"), len);
1560
1561 hash_ptr = (shash_t *) str_hash_find (hash_tbl, str);
1562 if (hash_ptr == (shash_t *) NULL)
1563 {
1564 if (vp->objects_last_page + len >= PAGE_USIZE)
1565 {
1566 vp->num_allocated =
1567 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE;
1568 add_varray_page (vp);
1569 }
1570
1571 hash_ptr = allocate_shash ();
1572 hash_ptr->indx = vp->num_allocated;
1573
1574 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page];
1575
1576 vp->objects_last_page += len + 1;
1577 vp->num_allocated += len + 1;
1578
1579 strcpy (hash_ptr->string, str);
1580
1581 str_hash_insert (hash_tbl, str, (char *) hash_ptr);
1582 }
1583
1584 if (ret_hash != (shash_t **) NULL)
1585 *ret_hash = hash_ptr;
1586
1587 return hash_ptr->indx;
1588 }
1589 \f
1590 /* Add debugging information for a symbol. */
1591
1592 static localsym_t *
1593 add_ecoff_symbol (const char *str, /* symbol name */
1594 st_t type, /* symbol type */
1595 sc_t storage, /* storage class */
1596 symbolS *sym_value, /* associated symbol. */
1597 bfd_vma addend, /* addend to sym_value. */
1598 symint_t value, /* value of symbol */
1599 symint_t indx /* index to local/aux. syms */)
1600 {
1601 localsym_t *psym;
1602 scope_t *pscope;
1603 thead_t *ptag_head;
1604 tag_t *ptag;
1605 tag_t *ptag_next;
1606 varray_t *vp;
1607 int scope_delta = 0;
1608 shash_t *hash_ptr = (shash_t *) NULL;
1609
1610 if (cur_file_ptr == (efdr_t *) NULL)
1611 as_fatal (_("no current file pointer"));
1612
1613 vp = &cur_file_ptr->symbols;
1614
1615 if (vp->objects_last_page == vp->objects_per_page)
1616 add_varray_page (vp);
1617
1618 psym = &vp->last->datum->sym[vp->objects_last_page++];
1619
1620 if (str == (const char *) NULL && sym_value != (symbolS *) NULL)
1621 psym->name = S_GET_NAME (sym_value);
1622 else
1623 psym->name = str;
1624 psym->as_sym = sym_value;
1625 if (sym_value != (symbolS *) NULL)
1626 symbol_get_obj (sym_value)->ecoff_symbol = psym;
1627 psym->addend = addend;
1628 psym->file_ptr = cur_file_ptr;
1629 psym->proc_ptr = cur_proc_ptr;
1630 psym->begin_ptr = (localsym_t *) NULL;
1631 psym->index_ptr = (aux_t *) NULL;
1632 psym->forward_ref = (forward_t *) NULL;
1633 psym->sym_index = -1;
1634 memset (&psym->ecoff_sym, 0, sizeof (EXTR));
1635 psym->ecoff_sym.asym.value = value;
1636 psym->ecoff_sym.asym.st = (unsigned) type;
1637 psym->ecoff_sym.asym.sc = (unsigned) storage;
1638 psym->ecoff_sym.asym.index = indx;
1639
1640 /* If there is an associated symbol, we wait until the end of the
1641 assembly before deciding where to put the name (it may be just an
1642 external symbol). Otherwise, this is just a debugging symbol and
1643 the name should go with the current file. */
1644 if (sym_value == (symbolS *) NULL)
1645 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL)
1646 ? 0
1647 : add_string (&cur_file_ptr->strings,
1648 cur_file_ptr->str_hash,
1649 str,
1650 &hash_ptr));
1651
1652 ++vp->num_allocated;
1653
1654 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym))
1655 return psym;
1656
1657 /* Save the symbol within the hash table if this is a static
1658 item, and it has a name. */
1659 if (hash_ptr != (shash_t *) NULL
1660 && (type == st_Global || type == st_Static || type == st_Label
1661 || type == st_Proc || type == st_StaticProc))
1662 hash_ptr->sym_ptr = psym;
1663
1664 /* push or pop a scope if appropriate. */
1665 switch (type)
1666 {
1667 default:
1668 break;
1669
1670 case st_File: /* beginning of file */
1671 case st_Proc: /* procedure */
1672 case st_StaticProc: /* static procedure */
1673 case st_Block: /* begin scope */
1674 pscope = allocate_scope ();
1675 pscope->prev = cur_file_ptr->cur_scope;
1676 pscope->lsym = psym;
1677 pscope->type = type;
1678 cur_file_ptr->cur_scope = pscope;
1679
1680 if (type != st_File)
1681 scope_delta = 1;
1682
1683 /* For every block type except file, struct, union, or
1684 enumeration blocks, push a level on the tag stack. We omit
1685 file types, so that tags can span file boundaries. */
1686 if (type != st_File && storage != sc_Info)
1687 {
1688 ptag_head = allocate_thead ();
1689 ptag_head->first_tag = 0;
1690 ptag_head->prev = cur_tag_head;
1691 cur_tag_head = ptag_head;
1692 }
1693 break;
1694
1695 case st_End:
1696 pscope = cur_file_ptr->cur_scope;
1697 if (pscope == (scope_t *) NULL)
1698 as_fatal (_("too many st_End's"));
1699 else
1700 {
1701 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st;
1702
1703 psym->begin_ptr = pscope->lsym;
1704
1705 if (begin_type != st_File)
1706 scope_delta = -1;
1707
1708 /* Except for file, structure, union, or enumeration end
1709 blocks remove all tags created within this scope. */
1710 if (begin_type != st_File && storage != sc_Info)
1711 {
1712 ptag_head = cur_tag_head;
1713 cur_tag_head = ptag_head->prev;
1714
1715 for (ptag = ptag_head->first_tag;
1716 ptag != (tag_t *) NULL;
1717 ptag = ptag_next)
1718 {
1719 if (ptag->forward_ref != (forward_t *) NULL)
1720 add_unknown_tag (ptag);
1721
1722 ptag_next = ptag->same_block;
1723 ptag->hash_ptr->tag_ptr = ptag->same_name;
1724 free_tag (ptag);
1725 }
1726
1727 free_thead (ptag_head);
1728 }
1729
1730 cur_file_ptr->cur_scope = pscope->prev;
1731
1732 /* block begin gets next sym #. This is set when we know
1733 the symbol index value. */
1734
1735 /* Functions push two or more aux words as follows:
1736 1st word: index+1 of the end symbol (filled in later).
1737 2nd word: type of the function (plus any aux words needed).
1738 Also, tie the external pointer back to the function begin symbol. */
1739 if (begin_type != st_File && begin_type != st_Block)
1740 {
1741 symint_t ty;
1742 varray_t *svp = &cur_file_ptr->aux_syms;
1743
1744 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0);
1745 pscope->lsym->index_ptr =
1746 &svp->last->datum->aux[svp->objects_last_page - 1];
1747 ty = add_aux_sym_tir (&last_func_type_info,
1748 hash_no,
1749 &cur_file_ptr->thash_head[0]);
1750 (void) ty;
1751 /* This seems to be unnecessary. I'm not even sure what it is
1752 * intended to do. It's from mips-tfile.
1753 * if (last_func_sym_value != (symbolS *) NULL)
1754 * {
1755 * last_func_sym_value->ifd = cur_file_ptr->file_index;
1756 * last_func_sym_value->index = ty;
1757 * }
1758 */
1759 }
1760
1761 free_scope (pscope);
1762 }
1763 }
1764
1765 cur_file_ptr->nested_scopes += scope_delta;
1766
1767 #ifdef ECOFF_DEBUG
1768 if (debug && type != st_File
1769 && (debug > 2 || type == st_Block || type == st_End
1770 || type == st_Proc || type == st_StaticProc))
1771 {
1772 char *sc_str = sc_to_string (storage);
1773 char *st_str = st_to_string (type);
1774 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0);
1775
1776 fprintf (stderr,
1777 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s",
1778 value, depth, sc_str);
1779
1780 if (str_start && str_end_p1 - str_start > 0)
1781 fprintf (stderr, " st= %-11s name= %.*s\n",
1782 st_str, str_end_p1 - str_start, str_start);
1783 else
1784 {
1785 unsigned long len = strlen (st_str);
1786 fprintf (stderr, " st= %.*s\n", len - 1, st_str);
1787 }
1788 }
1789 #endif
1790
1791 return psym;
1792 }
1793 \f
1794 /* Add an auxiliary symbol (passing a symint). This is actually used
1795 for integral aux types, not just symints. */
1796
1797 static symint_t
1798 add_aux_sym_symint (symint_t aux_word /* auxiliary information word */)
1799 {
1800 varray_t *vp;
1801 aux_t *aux_ptr;
1802
1803 if (cur_file_ptr == (efdr_t *) NULL)
1804 as_fatal (_("no current file pointer"));
1805
1806 vp = &cur_file_ptr->aux_syms;
1807
1808 if (vp->objects_last_page == vp->objects_per_page)
1809 add_varray_page (vp);
1810
1811 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1812 aux_ptr->type = aux_isym;
1813 aux_ptr->data.isym = aux_word;
1814
1815 return vp->num_allocated++;
1816 }
1817
1818 /* Add an auxiliary symbol (passing a file/symbol index combo). */
1819
1820 static symint_t
1821 add_aux_sym_rndx (int file_index, symint_t sym_index)
1822 {
1823 varray_t *vp;
1824 aux_t *aux_ptr;
1825
1826 if (cur_file_ptr == (efdr_t *) NULL)
1827 as_fatal (_("no current file pointer"));
1828
1829 vp = &cur_file_ptr->aux_syms;
1830
1831 if (vp->objects_last_page == vp->objects_per_page)
1832 add_varray_page (vp);
1833
1834 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1835 aux_ptr->type = aux_rndx;
1836 aux_ptr->data.rndx.rfd = file_index;
1837 aux_ptr->data.rndx.index = sym_index;
1838
1839 return vp->num_allocated++;
1840 }
1841 \f
1842 /* Add an auxiliary symbol (passing the basic type and possibly
1843 type qualifiers). */
1844
1845 static symint_t
1846 add_aux_sym_tir (type_info_t *t, /* current type information */
1847 hash_state_t state, /* whether to hash type or not */
1848 thash_t **hash_tbl /* pointer to hash table to use */)
1849 {
1850 varray_t *vp;
1851 aux_t *aux_ptr;
1852 static AUXU init_aux;
1853 symint_t ret;
1854 int i;
1855 AUXU aux;
1856
1857 if (cur_file_ptr == (efdr_t *) NULL)
1858 as_fatal (_("no current file pointer"));
1859
1860 vp = &cur_file_ptr->aux_syms;
1861
1862 aux = init_aux;
1863 aux.ti.bt = (int) t->basic_type;
1864 aux.ti.continued = 0;
1865 aux.ti.fBitfield = t->bitfield;
1866
1867 aux.ti.tq0 = (int) t->type_qualifiers[0];
1868 aux.ti.tq1 = (int) t->type_qualifiers[1];
1869 aux.ti.tq2 = (int) t->type_qualifiers[2];
1870 aux.ti.tq3 = (int) t->type_qualifiers[3];
1871 aux.ti.tq4 = (int) t->type_qualifiers[4];
1872 aux.ti.tq5 = (int) t->type_qualifiers[5];
1873
1874 /* For anything that adds additional information, we must not hash,
1875 so check here, and reset our state. */
1876
1877 if (state != hash_no
1878 && (t->type_qualifiers[0] == tq_Array
1879 || t->type_qualifiers[1] == tq_Array
1880 || t->type_qualifiers[2] == tq_Array
1881 || t->type_qualifiers[3] == tq_Array
1882 || t->type_qualifiers[4] == tq_Array
1883 || t->type_qualifiers[5] == tq_Array
1884 || t->basic_type == bt_Struct
1885 || t->basic_type == bt_Union
1886 || t->basic_type == bt_Enum
1887 || t->bitfield
1888 || t->num_dims > 0))
1889 state = hash_no;
1890
1891 /* See if we can hash this type, and save some space, but some types
1892 can't be hashed (because they contain arrays or continuations),
1893 and others can be put into the hash list, but cannot use existing
1894 types because other aux entries precede this one. */
1895
1896 if (state != hash_no)
1897 {
1898 thash_t *hash_ptr;
1899 symint_t hi;
1900
1901 hi = aux.isym & ((1 << HASHBITS) - 1);
1902 hi %= THASH_SIZE;
1903
1904 for (hash_ptr = hash_tbl[hi];
1905 hash_ptr != (thash_t *)0;
1906 hash_ptr = hash_ptr->next)
1907 {
1908 if (aux.isym == hash_ptr->type.isym)
1909 break;
1910 }
1911
1912 if (hash_ptr != (thash_t *) NULL && state == hash_yes)
1913 return hash_ptr->indx;
1914
1915 if (hash_ptr == (thash_t *) NULL)
1916 {
1917 hash_ptr = allocate_thash ();
1918 hash_ptr->next = hash_tbl[hi];
1919 hash_ptr->type = aux;
1920 hash_ptr->indx = vp->num_allocated;
1921 hash_tbl[hi] = hash_ptr;
1922 }
1923 }
1924
1925 /* Everything is set up, add the aux symbol. */
1926 if (vp->objects_last_page == vp->objects_per_page)
1927 add_varray_page (vp);
1928
1929 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1930 aux_ptr->type = aux_tir;
1931 aux_ptr->data = aux;
1932
1933 ret = vp->num_allocated++;
1934
1935 /* Add bitfield length if it exists.
1936
1937 NOTE: Mips documentation claims bitfield goes at the end of the
1938 AUX record, but the DECstation compiler emits it here.
1939 (This would only make a difference for enum bitfields.)
1940
1941 Also note: We use the last size given since gcc may emit 2
1942 for an enum bitfield. */
1943
1944 if (t->bitfield)
1945 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]);
1946
1947 /* Add tag information if needed. Structure, union, and enum
1948 references add 2 aux symbols: a [file index, symbol index]
1949 pointer to the structure type, and the current file index. */
1950
1951 if (t->basic_type == bt_Struct
1952 || t->basic_type == bt_Union
1953 || t->basic_type == bt_Enum)
1954 {
1955 symint_t file_index = t->tag_ptr->ifd;
1956 localsym_t *sym = t->tag_ptr->sym;
1957 forward_t *forward_ref = allocate_forward ();
1958
1959 if (sym != (localsym_t *) NULL)
1960 {
1961 forward_ref->next = sym->forward_ref;
1962 sym->forward_ref = forward_ref;
1963 }
1964 else
1965 {
1966 forward_ref->next = t->tag_ptr->forward_ref;
1967 t->tag_ptr->forward_ref = forward_ref;
1968 }
1969
1970 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil);
1971 forward_ref->index_ptr
1972 = &vp->last->datum->aux[vp->objects_last_page - 1];
1973
1974 (void) add_aux_sym_symint (file_index);
1975 forward_ref->ifd_ptr
1976 = &vp->last->datum->aux[vp->objects_last_page - 1];
1977 }
1978
1979 /* Add information about array bounds if they exist. */
1980 for (i = 0; i < t->num_dims; i++)
1981 {
1982 (void) add_aux_sym_rndx (ST_RFDESCAPE,
1983 cur_file_ptr->int_type);
1984
1985 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/
1986 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */
1987 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/
1988 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */
1989 ? 0
1990 : (t->sizes[i] * 8) / t->dimensions[i]);
1991 };
1992
1993 /* NOTE: Mips documentation claims that the bitfield width goes here.
1994 But it needs to be emitted earlier. */
1995
1996 return ret;
1997 }
1998 \f
1999 /* Add a tag to the tag table (unless it already exists). */
2000
2001 static tag_t *
2002 get_tag (const char *tag, /* tag name */
2003 localsym_t *sym, /* tag start block */
2004 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */)
2005 {
2006 shash_t *hash_ptr;
2007 tag_t *tag_ptr;
2008
2009 if (cur_file_ptr == (efdr_t *) NULL)
2010 as_fatal (_("no current file pointer"));
2011
2012 hash_ptr = (shash_t *) str_hash_find (tag_hash, tag);
2013
2014 if (hash_ptr != (shash_t *) NULL
2015 && hash_ptr->tag_ptr != (tag_t *) NULL)
2016 {
2017 tag_ptr = hash_ptr->tag_ptr;
2018 if (sym != (localsym_t *) NULL)
2019 {
2020 tag_ptr->basic_type = basic_type;
2021 tag_ptr->ifd = cur_file_ptr->file_index;
2022 tag_ptr->sym = sym;
2023 }
2024 return tag_ptr;
2025 }
2026
2027 if (hash_ptr == (shash_t *) NULL)
2028 {
2029 char *perm;
2030
2031 perm = xstrdup (tag);
2032 hash_ptr = allocate_shash ();
2033 str_hash_insert (tag_hash, perm, (char *) hash_ptr);
2034 hash_ptr->string = perm;
2035 }
2036
2037 tag_ptr = allocate_tag ();
2038 tag_ptr->forward_ref = (forward_t *) NULL;
2039 tag_ptr->hash_ptr = hash_ptr;
2040 tag_ptr->same_name = hash_ptr->tag_ptr;
2041 tag_ptr->basic_type = basic_type;
2042 tag_ptr->sym = sym;
2043 tag_ptr->ifd = ((sym == (localsym_t *) NULL)
2044 ? (symint_t) -1
2045 : cur_file_ptr->file_index);
2046 tag_ptr->same_block = cur_tag_head->first_tag;
2047
2048 cur_tag_head->first_tag = tag_ptr;
2049 hash_ptr->tag_ptr = tag_ptr;
2050
2051 return tag_ptr;
2052 }
2053 \f
2054 /* Add an unknown {struct, union, enum} tag. */
2055
2056 static void
2057 add_unknown_tag (tag_t *ptag /* pointer to tag information */)
2058 {
2059 shash_t *hash_ptr = ptag->hash_ptr;
2060 char *name = hash_ptr->string;
2061 localsym_t *sym;
2062 forward_t **pf;
2063
2064 #ifdef ECOFF_DEBUG
2065 if (debug > 1)
2066 {
2067 char *agg_type = "{unknown aggregate type}";
2068 switch (ptag->basic_type)
2069 {
2070 case bt_Struct: agg_type = "struct"; break;
2071 case bt_Union: agg_type = "union"; break;
2072 case bt_Enum: agg_type = "enum"; break;
2073 default: break;
2074 }
2075
2076 fprintf (stderr, "unknown %s %.*s found\n", agg_type,
2077 hash_ptr->len, name_start);
2078 }
2079 #endif
2080
2081 sym = add_ecoff_symbol (name,
2082 st_Block,
2083 sc_Info,
2084 (symbolS *) NULL,
2085 (bfd_vma) 0,
2086 (symint_t) 0,
2087 (symint_t) 0);
2088
2089 (void) add_ecoff_symbol (name,
2090 st_End,
2091 sc_Info,
2092 (symbolS *) NULL,
2093 (bfd_vma) 0,
2094 (symint_t) 0,
2095 (symint_t) 0);
2096
2097 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next)
2098 ;
2099 *pf = ptag->forward_ref;
2100 }
2101 \f
2102 /* Add a procedure to the current file's list of procedures, and record
2103 this is the current procedure. If AENT, then only set the requested
2104 symbol's function type. */
2105
2106 static void
2107 add_procedure (char *func /* func name */, int aent)
2108 {
2109 varray_t *vp;
2110 proc_t *new_proc_ptr;
2111 symbolS *sym;
2112
2113 #ifdef ECOFF_DEBUG
2114 if (debug)
2115 fputc ('\n', stderr);
2116 #endif
2117
2118 /* Set the BSF_FUNCTION flag for the symbol. */
2119 sym = symbol_find_or_make (func);
2120 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION;
2121
2122 if (aent)
2123 return;
2124
2125 if (cur_file_ptr == (efdr_t *) NULL)
2126 as_fatal (_("no current file pointer"));
2127
2128 vp = &cur_file_ptr->procs;
2129
2130 if (vp->objects_last_page == vp->objects_per_page)
2131 add_varray_page (vp);
2132
2133 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++];
2134
2135 if (first_proc_ptr == (proc_t *) NULL)
2136 first_proc_ptr = new_proc_ptr;
2137
2138 vp->num_allocated++;
2139
2140 new_proc_ptr->pdr.isym = -1;
2141 new_proc_ptr->pdr.iline = -1;
2142 new_proc_ptr->pdr.lnLow = -1;
2143 new_proc_ptr->pdr.lnHigh = -1;
2144
2145 /* Push the start of the function. */
2146 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text,
2147 sym, (bfd_vma) 0, (symint_t) 0,
2148 (symint_t) 0);
2149
2150 ++proc_cnt;
2151
2152 /* Fill in the linenos preceding the .ent, if any. */
2153 if (noproc_lineno != (lineno_list_t *) NULL)
2154 {
2155 lineno_list_t *l;
2156
2157 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next)
2158 l->proc = new_proc_ptr;
2159 *last_lineno_ptr = noproc_lineno;
2160 while (*last_lineno_ptr != NULL)
2161 {
2162 last_lineno = *last_lineno_ptr;
2163 last_lineno_ptr = &last_lineno->next;
2164 }
2165 noproc_lineno = (lineno_list_t *) NULL;
2166 }
2167 }
2168
2169 symbolS *
2170 ecoff_get_cur_proc_sym (void)
2171 {
2172 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL);
2173 }
2174 \f
2175 /* Add a new filename, and set up all of the file relative
2176 virtual arrays (strings, symbols, aux syms, etc.). Record
2177 where the current file structure lives. */
2178
2179 static void
2180 add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake)
2181 {
2182 int first_ch;
2183 efdr_t *fil_ptr;
2184
2185 #ifdef ECOFF_DEBUG
2186 if (debug)
2187 fprintf (stderr, "\tfile\t%.*s\n", len, file_start);
2188 #endif
2189
2190 /* If the file name is NULL, then no .file symbol appeared, and we
2191 want to use the actual file name. */
2192 if (file_name == (const char *) NULL)
2193 {
2194 if (first_file != (efdr_t *) NULL)
2195 as_fatal (_("fake .file after real one"));
2196 file_name = as_where ((unsigned int *) NULL);
2197
2198 /* Automatically generate ECOFF debugging information, since I
2199 think that's what other ECOFF assemblers do. We don't do
2200 this if we see a .file directive with a string, since that
2201 implies that some sort of debugging information is being
2202 provided. */
2203 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED)
2204 debug_type = DEBUG_ECOFF;
2205 }
2206 else if (debug_type == DEBUG_UNSPECIFIED)
2207 debug_type = DEBUG_NONE;
2208
2209 #ifndef NO_LISTING
2210 if (listing)
2211 listing_source_file (file_name);
2212 #endif
2213
2214 current_stabs_filename = file_name;
2215
2216 /* If we're creating stabs, then we don't actually make a new FDR.
2217 Instead, we just create a stabs symbol. */
2218 if (stabs_seen)
2219 {
2220 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2221 symbol_new (FAKE_LABEL_NAME, now_seg,
2222 (valueT) frag_now_fix (),
2223 frag_now),
2224 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL));
2225 return;
2226 }
2227
2228 first_ch = *file_name;
2229
2230 /* FIXME: We can't safely merge files which have line number
2231 information (fMerge will be zero in this case). Otherwise, we
2232 get incorrect line number debugging info. See for instance
2233 ecoff_build_lineno, which will end up setting all file->fdr.*
2234 fields multiple times, resulting in incorrect debug info. In
2235 order to make this work right, all line number and symbol info
2236 for the same source file has to be adjacent in the object file,
2237 so that a single file descriptor can be used to point to them.
2238 This would require maintaining file specific lists of line
2239 numbers and symbols for each file, so that they can be merged
2240 together (or output together) when two .file pseudo-ops are
2241 merged into one file descriptor. */
2242
2243 /* See if the file has already been created. */
2244 for (fil_ptr = first_file;
2245 fil_ptr != (efdr_t *) NULL;
2246 fil_ptr = fil_ptr->next_file)
2247 {
2248 if (first_ch == fil_ptr->name[0]
2249 && filename_cmp (file_name, fil_ptr->name) == 0
2250 && fil_ptr->fdr.fMerge)
2251 {
2252 cur_file_ptr = fil_ptr;
2253 if (! fake)
2254 cur_file_ptr->fake = 0;
2255 break;
2256 }
2257 }
2258
2259 /* If this is a new file, create it. */
2260 if (fil_ptr == (efdr_t *) NULL)
2261 {
2262 if (file_desc.objects_last_page == file_desc.objects_per_page)
2263 add_varray_page (&file_desc);
2264
2265 fil_ptr = cur_file_ptr =
2266 &file_desc.last->datum->file[file_desc.objects_last_page++];
2267 *fil_ptr = init_file;
2268
2269 fil_ptr->file_index = current_file_idx++;
2270 ++file_desc.num_allocated;
2271
2272 fil_ptr->fake = fake;
2273
2274 /* Allocate the string hash table. */
2275 fil_ptr->str_hash = str_htab_create ();
2276
2277 /* Make sure 0 byte in string table is null */
2278 add_string (&fil_ptr->strings,
2279 fil_ptr->str_hash,
2280 "",
2281 (shash_t **)0);
2282
2283 if (strlen (file_name) > PAGE_USIZE - 2)
2284 as_fatal (_("filename goes over one page boundary"));
2285
2286 /* Push the start of the filename. We assume that the filename
2287 will be stored at string offset 1. */
2288 (void) add_ecoff_symbol (file_name, st_File, sc_Text,
2289 (symbolS *) NULL, (bfd_vma) 0,
2290 (symint_t) 0, (symint_t) 0);
2291 fil_ptr->fdr.rss = 1;
2292 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1];
2293
2294 /* Update the linked list of file descriptors. */
2295 *last_file_ptr = fil_ptr;
2296 last_file_ptr = &fil_ptr->next_file;
2297
2298 /* Add void & int types to the file (void should be first to catch
2299 errant 0's within the index fields). */
2300 fil_ptr->void_type = add_aux_sym_tir (&void_type_info,
2301 hash_yes,
2302 &cur_file_ptr->thash_head[0]);
2303
2304 fil_ptr->int_type = add_aux_sym_tir (&int_type_info,
2305 hash_yes,
2306 &cur_file_ptr->thash_head[0]);
2307 }
2308 }
2309
2310 /* This function is called when the assembler notices a preprocessor
2311 directive switching to a new file. This will not happen in
2312 compiler output, only in hand coded assembler. */
2313
2314 void
2315 ecoff_new_file (const char *name, int appfile ATTRIBUTE_UNUSED)
2316 {
2317 if (cur_file_ptr != NULL && filename_cmp (cur_file_ptr->name, name) == 0)
2318 return;
2319 add_file (name, 0, 0);
2320
2321 /* This is a hand coded assembler file, so automatically turn on
2322 debugging information. */
2323 if (debug_type == DEBUG_UNSPECIFIED)
2324 debug_type = DEBUG_ECOFF;
2325 }
2326 \f
2327 #ifdef ECOFF_DEBUG
2328
2329 /* Convert storage class to string. */
2330
2331 static char *
2332 sc_to_string (storage_class)
2333 sc_t storage_class;
2334 {
2335 switch (storage_class)
2336 {
2337 case sc_Nil: return "Nil,";
2338 case sc_Text: return "Text,";
2339 case sc_Data: return "Data,";
2340 case sc_Bss: return "Bss,";
2341 case sc_Register: return "Register,";
2342 case sc_Abs: return "Abs,";
2343 case sc_Undefined: return "Undefined,";
2344 case sc_CdbLocal: return "CdbLocal,";
2345 case sc_Bits: return "Bits,";
2346 case sc_CdbSystem: return "CdbSystem,";
2347 case sc_RegImage: return "RegImage,";
2348 case sc_Info: return "Info,";
2349 case sc_UserStruct: return "UserStruct,";
2350 case sc_SData: return "SData,";
2351 case sc_SBss: return "SBss,";
2352 case sc_RData: return "RData,";
2353 case sc_Var: return "Var,";
2354 case sc_Common: return "Common,";
2355 case sc_SCommon: return "SCommon,";
2356 case sc_VarRegister: return "VarRegister,";
2357 case sc_Variant: return "Variant,";
2358 case sc_SUndefined: return "SUndefined,";
2359 case sc_Init: return "Init,";
2360 case sc_Max: return "Max,";
2361 }
2362
2363 return "???,";
2364 }
2365
2366 #endif /* DEBUG */
2367 \f
2368 #ifdef ECOFF_DEBUG
2369
2370 /* Convert symbol type to string. */
2371
2372 static char *
2373 st_to_string (symbol_type)
2374 st_t symbol_type;
2375 {
2376 switch (symbol_type)
2377 {
2378 case st_Nil: return "Nil,";
2379 case st_Global: return "Global,";
2380 case st_Static: return "Static,";
2381 case st_Param: return "Param,";
2382 case st_Local: return "Local,";
2383 case st_Label: return "Label,";
2384 case st_Proc: return "Proc,";
2385 case st_Block: return "Block,";
2386 case st_End: return "End,";
2387 case st_Member: return "Member,";
2388 case st_Typedef: return "Typedef,";
2389 case st_File: return "File,";
2390 case st_RegReloc: return "RegReloc,";
2391 case st_Forward: return "Forward,";
2392 case st_StaticProc: return "StaticProc,";
2393 case st_Constant: return "Constant,";
2394 case st_Str: return "String,";
2395 case st_Number: return "Number,";
2396 case st_Expr: return "Expr,";
2397 case st_Type: return "Type,";
2398 case st_Max: return "Max,";
2399 }
2400
2401 return "???,";
2402 }
2403
2404 #endif /* DEBUG */
2405 \f
2406 /* Parse .begin directives which have a label as the first argument
2407 which gives the location of the start of the block. */
2408
2409 void
2410 ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED)
2411 {
2412 char *name;
2413 char name_end;
2414
2415 if (cur_file_ptr == (efdr_t *) NULL)
2416 {
2417 as_warn (_(".begin directive without a preceding .file directive"));
2418 demand_empty_rest_of_line ();
2419 return;
2420 }
2421
2422 if (cur_proc_ptr == (proc_t *) NULL)
2423 {
2424 as_warn (_(".begin directive without a preceding .ent directive"));
2425 demand_empty_rest_of_line ();
2426 return;
2427 }
2428
2429 name_end = get_symbol_name (&name);
2430
2431 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text,
2432 symbol_find_or_make (name),
2433 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2434
2435 (void) restore_line_pointer (name_end);
2436
2437 /* The line number follows, but we don't use it. */
2438 (void) get_absolute_expression ();
2439 demand_empty_rest_of_line ();
2440 }
2441 \f
2442 /* Parse .bend directives which have a label as the first argument
2443 which gives the location of the end of the block. */
2444
2445 void
2446 ecoff_directive_bend (int ignore ATTRIBUTE_UNUSED)
2447 {
2448 char *name;
2449 char name_end;
2450 symbolS *endsym;
2451
2452 if (cur_file_ptr == (efdr_t *) NULL)
2453 {
2454 as_warn (_(".bend directive without a preceding .file directive"));
2455 demand_empty_rest_of_line ();
2456 return;
2457 }
2458
2459 if (cur_proc_ptr == (proc_t *) NULL)
2460 {
2461 as_warn (_(".bend directive without a preceding .ent directive"));
2462 demand_empty_rest_of_line ();
2463 return;
2464 }
2465
2466 name_end = get_symbol_name (&name);
2467
2468 /* The value is the distance between the .bend directive and the
2469 corresponding symbol. We fill in the offset when we write out
2470 the symbol. */
2471 endsym = symbol_find (name);
2472 if (endsym == (symbolS *) NULL)
2473 as_warn (_(".bend directive names unknown symbol"));
2474 else
2475 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym,
2476 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2477
2478 restore_line_pointer (name_end);
2479
2480 /* The line number follows, but we don't use it. */
2481 (void) get_absolute_expression ();
2482 demand_empty_rest_of_line ();
2483 }
2484 \f
2485 /* COFF debugging information is provided as a series of directives
2486 (.def, .scl, etc.). We build up information as we read the
2487 directives in the following static variables, and file it away when
2488 we reach the .endef directive. */
2489 static char *coff_sym_name;
2490 static type_info_t coff_type;
2491 static sc_t coff_storage_class;
2492 static st_t coff_symbol_typ;
2493 static int coff_is_function;
2494 static char *coff_tag;
2495 static valueT coff_value;
2496 static symbolS *coff_sym_value;
2497 static bfd_vma coff_sym_addend;
2498 static int coff_inside_enumeration;
2499
2500 /* Handle a .def directive: start defining a symbol. */
2501
2502 void
2503 ecoff_directive_def (int ignore ATTRIBUTE_UNUSED)
2504 {
2505 char *name;
2506 char name_end;
2507
2508 ecoff_debugging_seen = 1;
2509
2510 SKIP_WHITESPACE ();
2511
2512 name_end = get_symbol_name (&name);
2513
2514 if (coff_sym_name != (char *) NULL)
2515 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored"));
2516 else if (*name == '\0')
2517 as_warn (_("empty symbol name in .def; ignored"));
2518 else
2519 {
2520 free (coff_sym_name);
2521 free (coff_tag);
2522
2523 coff_sym_name = xstrdup (name);
2524 coff_type = type_info_init;
2525 coff_storage_class = sc_Nil;
2526 coff_symbol_typ = st_Nil;
2527 coff_is_function = 0;
2528 coff_tag = (char *) NULL;
2529 coff_value = 0;
2530 coff_sym_value = (symbolS *) NULL;
2531 coff_sym_addend = 0;
2532 }
2533
2534 restore_line_pointer (name_end);
2535
2536 demand_empty_rest_of_line ();
2537 }
2538
2539 /* Handle a .dim directive, used to give dimensions for an array. The
2540 arguments are comma separated numbers. mips-tfile assumes that
2541 there will not be more than 6 dimensions, and gdb won't read any
2542 more than that anyhow, so I will also make that assumption. */
2543
2544 void
2545 ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED)
2546 {
2547 int dimens[N_TQ];
2548 int i;
2549
2550 if (coff_sym_name == (char *) NULL)
2551 {
2552 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored"));
2553 demand_empty_rest_of_line ();
2554 return;
2555 }
2556
2557 for (i = 0; i < N_TQ; i++)
2558 {
2559 SKIP_WHITESPACE ();
2560 dimens[i] = get_absolute_expression ();
2561 if (*input_line_pointer == ',')
2562 ++input_line_pointer;
2563 else
2564 {
2565 if (*input_line_pointer != '\n'
2566 && *input_line_pointer != ';')
2567 as_warn (_("badly formed .dim directive"));
2568 break;
2569 }
2570 }
2571
2572 if (i == N_TQ)
2573 --i;
2574
2575 /* The dimensions are stored away in reverse order. */
2576 for (; i >= 0; i--)
2577 {
2578 if (coff_type.num_dims >= N_TQ)
2579 {
2580 as_warn (_("too many .dim entries"));
2581 break;
2582 }
2583 coff_type.dimensions[coff_type.num_dims] = dimens[i];
2584 ++coff_type.num_dims;
2585 }
2586
2587 demand_empty_rest_of_line ();
2588 }
2589
2590 /* Handle a .scl directive, which sets the COFF storage class of the
2591 symbol. */
2592
2593 void
2594 ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED)
2595 {
2596 long val;
2597
2598 if (coff_sym_name == (char *) NULL)
2599 {
2600 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored"));
2601 demand_empty_rest_of_line ();
2602 return;
2603 }
2604
2605 val = get_absolute_expression ();
2606
2607 coff_symbol_typ = map_coff_sym_type[val];
2608 coff_storage_class = map_coff_storage[val];
2609
2610 demand_empty_rest_of_line ();
2611 }
2612
2613 /* Handle a .size directive. For some reason mips-tfile.c thinks that
2614 .size can have multiple arguments. We humor it, although gcc will
2615 never generate more than one argument. */
2616
2617 void
2618 ecoff_directive_size (int ignore ATTRIBUTE_UNUSED)
2619 {
2620 int sizes[N_TQ];
2621 int i;
2622
2623 if (coff_sym_name == (char *) NULL)
2624 {
2625 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored"));
2626 demand_empty_rest_of_line ();
2627 return;
2628 }
2629
2630 for (i = 0; i < N_TQ; i++)
2631 {
2632 SKIP_WHITESPACE ();
2633 sizes[i] = get_absolute_expression ();
2634 if (*input_line_pointer == ',')
2635 ++input_line_pointer;
2636 else
2637 {
2638 if (*input_line_pointer != '\n'
2639 && *input_line_pointer != ';')
2640 as_warn (_("badly formed .size directive"));
2641 break;
2642 }
2643 }
2644
2645 if (i == N_TQ)
2646 --i;
2647
2648 /* The sizes are stored away in reverse order. */
2649 for (; i >= 0; i--)
2650 {
2651 if (coff_type.num_sizes >= N_TQ)
2652 {
2653 as_warn (_("too many .size entries"));
2654 break;
2655 }
2656 coff_type.sizes[coff_type.num_sizes] = sizes[i];
2657 ++coff_type.num_sizes;
2658 }
2659
2660 demand_empty_rest_of_line ();
2661 }
2662
2663 /* Handle the .type directive, which gives the COFF type of the
2664 symbol. */
2665
2666 void
2667 ecoff_directive_type (int ignore ATTRIBUTE_UNUSED)
2668 {
2669 long val;
2670 tq_t *tq_ptr;
2671 tq_t *tq_shft;
2672
2673 if (coff_sym_name == (char *) NULL)
2674 {
2675 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored"));
2676 demand_empty_rest_of_line ();
2677 return;
2678 }
2679
2680 val = get_absolute_expression ();
2681
2682 coff_type.orig_type = BTYPE (val);
2683 coff_type.basic_type = map_coff_types[coff_type.orig_type];
2684
2685 tq_ptr = &coff_type.type_qualifiers[N_TQ];
2686 while (val & ~N_BTMASK)
2687 {
2688 if (tq_ptr == &coff_type.type_qualifiers[0])
2689 {
2690 /* FIXME: We could handle this by setting the continued bit.
2691 There would still be a limit: the .type argument can not
2692 be infinite. */
2693 as_warn (_("the type of %s is too complex; it will be simplified"),
2694 coff_sym_name);
2695 break;
2696 }
2697 if (ISPTR (val))
2698 *--tq_ptr = tq_Ptr;
2699 else if (ISFCN (val))
2700 *--tq_ptr = tq_Proc;
2701 else if (ISARY (val))
2702 *--tq_ptr = tq_Array;
2703 else
2704 as_fatal (_("Unrecognized .type argument"));
2705
2706 val = DECREF (val);
2707 }
2708
2709 tq_shft = &coff_type.type_qualifiers[0];
2710 while (tq_ptr != &coff_type.type_qualifiers[N_TQ])
2711 *tq_shft++ = *tq_ptr++;
2712
2713 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc)
2714 {
2715 /* If this is a function, ignore it, so that we don't get two
2716 entries (one from the .ent, and one for the .def that
2717 precedes it). Save the type information so that the end
2718 block can properly add it after the begin block index. For
2719 MIPS knows what reason, we must strip off the function type
2720 at this point. */
2721 coff_is_function = 1;
2722 tq_shft[-1] = tq_Nil;
2723 }
2724
2725 while (tq_shft != &coff_type.type_qualifiers[N_TQ])
2726 *tq_shft++ = tq_Nil;
2727
2728 demand_empty_rest_of_line ();
2729 }
2730
2731 /* Handle the .tag directive, which gives the name of a structure,
2732 union or enum. */
2733
2734 void
2735 ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED)
2736 {
2737 char *name;
2738 char name_end;
2739
2740 if (coff_sym_name == (char *) NULL)
2741 {
2742 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored"));
2743 demand_empty_rest_of_line ();
2744 return;
2745 }
2746
2747 name_end = get_symbol_name (&name);
2748
2749 coff_tag = xstrdup (name);
2750
2751 (void) restore_line_pointer (name_end);
2752
2753 demand_empty_rest_of_line ();
2754 }
2755
2756 /* Handle the .val directive, which gives the value of the symbol. It
2757 may be the name of a static or global symbol. */
2758
2759 void
2760 ecoff_directive_val (int ignore ATTRIBUTE_UNUSED)
2761 {
2762 expressionS exp;
2763
2764 if (coff_sym_name == (char *) NULL)
2765 {
2766 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored"));
2767 demand_empty_rest_of_line ();
2768 return;
2769 }
2770
2771 expression (&exp);
2772 if (exp.X_op != O_constant && exp.X_op != O_symbol)
2773 {
2774 as_bad (_(".val expression is too complex"));
2775 demand_empty_rest_of_line ();
2776 return;
2777 }
2778
2779 if (exp.X_op == O_constant)
2780 coff_value = exp.X_add_number;
2781 else
2782 {
2783 coff_sym_value = exp.X_add_symbol;
2784 coff_sym_addend = exp.X_add_number;
2785 }
2786
2787 demand_empty_rest_of_line ();
2788 }
2789
2790 /* Handle the .endef directive, which terminates processing of COFF
2791 debugging information for a symbol. */
2792
2793 void
2794 ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED)
2795 {
2796 char *name;
2797 symint_t indx;
2798 localsym_t *sym;
2799
2800 demand_empty_rest_of_line ();
2801
2802 if (coff_sym_name == (char *) NULL)
2803 {
2804 as_warn (_(".endef pseudo-op used before .def; ignored"));
2805 return;
2806 }
2807
2808 name = coff_sym_name;
2809 coff_sym_name = (char *) NULL;
2810
2811 /* If the symbol is a static or external, we have already gotten the
2812 appropriate type and class, so make sure we don't override those
2813 values. This is needed because there are some type and classes
2814 that are not in COFF, such as short data, etc. */
2815 if (coff_sym_value != (symbolS *) NULL)
2816 {
2817 coff_symbol_typ = st_Nil;
2818 coff_storage_class = sc_Nil;
2819 }
2820
2821 coff_type.extra_sizes = coff_tag != (char *) NULL;
2822 if (coff_type.num_dims > 0)
2823 {
2824 int diff = coff_type.num_dims - coff_type.num_sizes;
2825 int i = coff_type.num_dims - 1;
2826 int j;
2827
2828 if (coff_type.num_sizes != 1 || diff < 0)
2829 {
2830 as_warn (_("bad COFF debugging information"));
2831 return;
2832 }
2833
2834 /* If this is an array, make sure the same number of dimensions
2835 and sizes were passed, creating extra sizes for multiply
2836 dimensioned arrays if not passed. */
2837 coff_type.extra_sizes = 0;
2838 if (diff)
2839 {
2840 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1;
2841 while (j >= 0)
2842 {
2843 coff_type.sizes[j] = (((j - diff) >= 0)
2844 ? coff_type.sizes[j - diff]
2845 : 0);
2846 j--;
2847 }
2848
2849 coff_type.num_sizes = i + 1;
2850 for (i--; i >= 0; i--)
2851 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0
2852 ? 0
2853 : (coff_type.sizes[i + 1]
2854 / coff_type.dimensions[i + 1]));
2855 }
2856 }
2857 else if (coff_symbol_typ == st_Member
2858 && coff_type.num_sizes - coff_type.extra_sizes == 1)
2859 {
2860 /* Is this a bitfield? This is indicated by a structure member
2861 having a size field that isn't an array. */
2862 coff_type.bitfield = 1;
2863 }
2864
2865 /* Except for enumeration members & begin/ending of scopes, put the
2866 type word in the aux. symbol table. */
2867 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End)
2868 indx = 0;
2869 else if (coff_inside_enumeration)
2870 indx = cur_file_ptr->void_type;
2871 else
2872 {
2873 if (coff_type.basic_type == bt_Struct
2874 || coff_type.basic_type == bt_Union
2875 || coff_type.basic_type == bt_Enum)
2876 {
2877 if (coff_tag == (char *) NULL)
2878 {
2879 as_warn (_("no tag specified for %s"), name);
2880 return;
2881 }
2882
2883 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL,
2884 coff_type.basic_type);
2885 }
2886
2887 if (coff_is_function)
2888 {
2889 last_func_type_info = coff_type;
2890 last_func_sym_value = coff_sym_value;
2891 return;
2892 }
2893
2894 indx = add_aux_sym_tir (&coff_type,
2895 hash_yes,
2896 &cur_file_ptr->thash_head[0]);
2897 }
2898
2899 /* Do any last minute adjustments that are necessary. */
2900 switch (coff_symbol_typ)
2901 {
2902 default:
2903 break;
2904
2905 /* For the beginning of structs, unions, and enumerations, the
2906 size info needs to be passed in the value field. */
2907 case st_Block:
2908 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes
2909 != 1)
2910 {
2911 as_warn (_("bad COFF debugging information"));
2912 return;
2913 }
2914 else
2915 coff_value = coff_type.sizes[0];
2916
2917 coff_inside_enumeration = (coff_type.orig_type == T_ENUM);
2918 break;
2919
2920 /* For the end of structs, unions, and enumerations, omit the
2921 name which is always ".eos". This needs to be done last, so
2922 that any error reporting above gives the correct name. */
2923 case st_End:
2924 free (name);
2925 name = (char *) NULL;
2926 coff_value = 0;
2927 coff_inside_enumeration = 0;
2928 break;
2929
2930 /* Members of structures and unions that aren't bitfields, need
2931 to adjust the value from a byte offset to a bit offset.
2932 Members of enumerations do not have the value adjusted, and
2933 can be distinguished by indx == indexNil. For enumerations,
2934 update the maximum enumeration value. */
2935 case st_Member:
2936 if (! coff_type.bitfield && ! coff_inside_enumeration)
2937 coff_value *= 8;
2938
2939 break;
2940 }
2941
2942 /* Add the symbol. */
2943 sym = add_ecoff_symbol (name,
2944 coff_symbol_typ,
2945 coff_storage_class,
2946 coff_sym_value,
2947 coff_sym_addend,
2948 (symint_t) coff_value,
2949 indx);
2950
2951 /* deal with struct, union, and enum tags. */
2952 if (coff_symbol_typ == st_Block)
2953 {
2954 /* Create or update the tag information. */
2955 tag_t *tag_ptr = get_tag (name,
2956 sym,
2957 coff_type.basic_type);
2958 forward_t **pf;
2959
2960 /* Remember any forward references. */
2961 for (pf = &sym->forward_ref;
2962 *pf != (forward_t *) NULL;
2963 pf = &(*pf)->next)
2964 ;
2965 *pf = tag_ptr->forward_ref;
2966 tag_ptr->forward_ref = (forward_t *) NULL;
2967 }
2968 }
2969 \f
2970 /* Parse .end directives. */
2971
2972 void
2973 ecoff_directive_end (int ignore ATTRIBUTE_UNUSED)
2974 {
2975 char *name;
2976 char name_end;
2977 symbolS *ent;
2978
2979 if (cur_file_ptr == (efdr_t *) NULL)
2980 {
2981 as_warn (_(".end directive without a preceding .file directive"));
2982 demand_empty_rest_of_line ();
2983 return;
2984 }
2985
2986 if (cur_proc_ptr == (proc_t *) NULL)
2987 {
2988 as_warn (_(".end directive without a preceding .ent directive"));
2989 demand_empty_rest_of_line ();
2990 return;
2991 }
2992
2993 name_end = get_symbol_name (&name);
2994
2995 if (name == input_line_pointer)
2996 {
2997 as_warn (_(".end directive has no name"));
2998 (void) restore_line_pointer (name_end);
2999 demand_empty_rest_of_line ();
3000 return;
3001 }
3002
3003 /* The value is the distance between the .end directive and the
3004 corresponding symbol. We create a fake symbol to hold the
3005 current location, and put in the offset when we write out the
3006 symbol. */
3007 ent = symbol_find (name);
3008 if (ent == (symbolS *) NULL)
3009 as_warn (_(".end directive names unknown symbol"));
3010 else
3011 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text,
3012 symbol_new (FAKE_LABEL_NAME, now_seg,
3013 (valueT) frag_now_fix (),
3014 frag_now),
3015 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
3016
3017 #ifdef md_flush_pending_output
3018 md_flush_pending_output ();
3019 #endif
3020
3021 cur_proc_ptr = (proc_t *) NULL;
3022
3023 (void) restore_line_pointer (name_end);
3024 demand_empty_rest_of_line ();
3025 }
3026 \f
3027 /* Parse .ent directives. */
3028
3029 void
3030 ecoff_directive_ent (int aent)
3031 {
3032 char *name;
3033 char name_end;
3034
3035 if (cur_file_ptr == (efdr_t *) NULL)
3036 add_file ((const char *) NULL, 0, 1);
3037
3038 if (!aent && cur_proc_ptr != (proc_t *) NULL)
3039 {
3040 as_warn (_("second .ent directive found before .end directive"));
3041 demand_empty_rest_of_line ();
3042 return;
3043 }
3044
3045 name_end = get_symbol_name (&name);
3046
3047 if (name == input_line_pointer)
3048 {
3049 as_warn (_("%s directive has no name"), aent ? ".aent" : ".ent");
3050 (void) restore_line_pointer (name_end);
3051 demand_empty_rest_of_line ();
3052 return;
3053 }
3054
3055 add_procedure (name, aent);
3056
3057 (void) restore_line_pointer (name_end);
3058
3059 /* The .ent directive is sometimes followed by a number. I'm not
3060 really sure what the number means. I don't see any way to store
3061 the information in the PDR. The Irix 4 assembler seems to ignore
3062 the information. */
3063 SKIP_WHITESPACE ();
3064 if (*input_line_pointer == ',')
3065 {
3066 ++input_line_pointer;
3067 SKIP_WHITESPACE ();
3068 }
3069 if (ISDIGIT (*input_line_pointer)
3070 || *input_line_pointer == '-')
3071 (void) get_absolute_expression ();
3072
3073 demand_empty_rest_of_line ();
3074 }
3075 \f
3076 /* Parse .extern directives. */
3077
3078 void
3079 ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED)
3080 {
3081 char *name;
3082 int c;
3083 symbolS *symbolp;
3084 valueT size;
3085
3086 c = get_symbol_name (&name);
3087 symbolp = symbol_find_or_make (name);
3088 (void) restore_line_pointer (c);
3089
3090 S_SET_EXTERNAL (symbolp);
3091
3092 if (*input_line_pointer == ',')
3093 ++input_line_pointer;
3094 size = get_absolute_expression ();
3095
3096 symbol_get_obj (symbolp)->ecoff_extern_size = size;
3097 }
3098 \f
3099 /* Parse .file directives. */
3100
3101 void
3102 ecoff_directive_file (int ignore ATTRIBUTE_UNUSED)
3103 {
3104 int indx;
3105 char *name;
3106 int len;
3107
3108 if (cur_proc_ptr != (proc_t *) NULL)
3109 {
3110 as_warn (_("no way to handle .file within .ent/.end section"));
3111 demand_empty_rest_of_line ();
3112 return;
3113 }
3114
3115 indx = (int) get_absolute_expression ();
3116
3117 /* FIXME: we don't have to save the name here. */
3118 name = demand_copy_C_string (&len);
3119
3120 add_file (name, indx - 1, 0);
3121
3122 demand_empty_rest_of_line ();
3123 }
3124 \f
3125 /* Parse .fmask directives. */
3126
3127 void
3128 ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED)
3129 {
3130 long val;
3131
3132 if (cur_proc_ptr == (proc_t *) NULL)
3133 {
3134 as_warn (_(".fmask outside of .ent"));
3135 demand_empty_rest_of_line ();
3136 return;
3137 }
3138
3139 if (get_absolute_expression_and_terminator (&val) != ',')
3140 {
3141 as_warn (_("bad .fmask directive"));
3142 --input_line_pointer;
3143 demand_empty_rest_of_line ();
3144 return;
3145 }
3146
3147 cur_proc_ptr->pdr.fregmask = val;
3148 cur_proc_ptr->pdr.fregoffset = get_absolute_expression ();
3149
3150 demand_empty_rest_of_line ();
3151 }
3152 \f
3153 /* Parse .frame directives. */
3154
3155 void
3156 ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED)
3157 {
3158 long val;
3159
3160 if (cur_proc_ptr == (proc_t *) NULL)
3161 {
3162 as_warn (_(".frame outside of .ent"));
3163 demand_empty_rest_of_line ();
3164 return;
3165 }
3166
3167 cur_proc_ptr->pdr.framereg = tc_get_register (1);
3168
3169 SKIP_WHITESPACE ();
3170 if (*input_line_pointer++ != ','
3171 || get_absolute_expression_and_terminator (&val) != ',')
3172 {
3173 as_warn (_("bad .frame directive"));
3174 --input_line_pointer;
3175 demand_empty_rest_of_line ();
3176 return;
3177 }
3178
3179 cur_proc_ptr->pdr.frameoffset = val;
3180
3181 cur_proc_ptr->pdr.pcreg = tc_get_register (0);
3182
3183 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to
3184 Sandro. I don't yet know where this value should be stored, if
3185 anywhere. Don't call demand_empty_rest_of_line (). */
3186 s_ignore (42);
3187 }
3188 \f
3189 /* Parse .mask directives. */
3190
3191 void
3192 ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED)
3193 {
3194 long val;
3195
3196 if (cur_proc_ptr == (proc_t *) NULL)
3197 {
3198 as_warn (_(".mask outside of .ent"));
3199 demand_empty_rest_of_line ();
3200 return;
3201 }
3202
3203 if (get_absolute_expression_and_terminator (&val) != ',')
3204 {
3205 as_warn (_("bad .mask directive"));
3206 --input_line_pointer;
3207 demand_empty_rest_of_line ();
3208 return;
3209 }
3210
3211 cur_proc_ptr->pdr.regmask = val;
3212 cur_proc_ptr->pdr.regoffset = get_absolute_expression ();
3213
3214 demand_empty_rest_of_line ();
3215 }
3216 \f
3217 /* Parse .loc directives. */
3218
3219 void
3220 ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED)
3221 {
3222 lineno_list_t *list;
3223 symint_t lineno;
3224
3225 if (cur_file_ptr == (efdr_t *) NULL)
3226 {
3227 as_warn (_(".loc before .file"));
3228 demand_empty_rest_of_line ();
3229 return;
3230 }
3231
3232 if (now_seg != text_section)
3233 {
3234 as_warn (_(".loc outside of .text"));
3235 demand_empty_rest_of_line ();
3236 return;
3237 }
3238
3239 /* Skip the file number. */
3240 SKIP_WHITESPACE ();
3241 get_absolute_expression ();
3242 SKIP_WHITESPACE ();
3243
3244 lineno = get_absolute_expression ();
3245
3246 #ifndef NO_LISTING
3247 if (listing)
3248 listing_source_line (lineno);
3249 #endif
3250
3251 /* If we're building stabs, then output a special label rather than
3252 ECOFF line number info. */
3253 if (stabs_seen)
3254 {
3255 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text,
3256 symbol_new (FAKE_LABEL_NAME, now_seg,
3257 (valueT) frag_now_fix (),
3258 frag_now),
3259 (bfd_vma) 0, 0, lineno);
3260 return;
3261 }
3262
3263 list = allocate_lineno_list ();
3264
3265 list->next = (lineno_list_t *) NULL;
3266 list->file = cur_file_ptr;
3267 list->proc = cur_proc_ptr;
3268 list->frag = frag_now;
3269 list->paddr = frag_now_fix ();
3270 list->lineno = lineno;
3271
3272 /* We don't want to merge files which have line numbers. */
3273 cur_file_ptr->fdr.fMerge = 0;
3274
3275 /* A .loc directive will sometimes appear before a .ent directive,
3276 which means that cur_proc_ptr will be NULL here. Arrange to
3277 patch this up. */
3278 if (cur_proc_ptr == (proc_t *) NULL)
3279 {
3280 lineno_list_t **pl;
3281
3282 pl = &noproc_lineno;
3283 while (*pl != (lineno_list_t *) NULL)
3284 pl = &(*pl)->next;
3285 *pl = list;
3286 }
3287 else
3288 {
3289 last_lineno = list;
3290 *last_lineno_ptr = list;
3291 last_lineno_ptr = &list->next;
3292 }
3293 }
3294
3295 /* The MIPS assembler sometimes inserts nop instructions in the
3296 instruction stream. When this happens, we must patch up the .loc
3297 information so that it points to the instruction after the nop. */
3298
3299 void
3300 ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset)
3301 {
3302 if (last_lineno != NULL
3303 && last_lineno->frag == old_frag
3304 && last_lineno->paddr == old_frag_offset)
3305 {
3306 last_lineno->frag = frag_now;
3307 last_lineno->paddr = frag_now_fix ();
3308 }
3309 }
3310 \f
3311 /* Make sure the @stabs symbol is emitted. */
3312
3313 static void
3314 mark_stabs (int ignore ATTRIBUTE_UNUSED)
3315 {
3316 if (! stabs_seen)
3317 {
3318 /* Add a dummy @stabs symbol. */
3319 stabs_seen = 1;
3320 (void) add_ecoff_symbol (stabs_symbol, st_Nil, sc_Info,
3321 (symbolS *) NULL,
3322 (bfd_vma) 0, (symint_t) -1,
3323 ECOFF_MARK_STAB (0));
3324 }
3325 }
3326 \f
3327 /* Parse .weakext directives. */
3328 #ifndef TC_MIPS
3329 /* For TC_MIPS use the version in tc-mips.c. */
3330 void
3331 ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED)
3332 {
3333 char *name;
3334 int c;
3335 symbolS *symbolP;
3336 expressionS exp;
3337
3338 c = get_symbol_name (&name);
3339 symbolP = symbol_find_or_make (name);
3340 (void) restore_line_pointer (c);
3341
3342 SKIP_WHITESPACE ();
3343
3344 if (*input_line_pointer == ',')
3345 {
3346 if (S_IS_DEFINED (symbolP))
3347 {
3348 as_bad (_("symbol `%s' is already defined"),
3349 S_GET_NAME (symbolP));
3350 ignore_rest_of_line ();
3351 return;
3352 }
3353
3354 ++input_line_pointer;
3355 SKIP_WHITESPACE ();
3356 if (! is_end_of_line[(unsigned char) *input_line_pointer])
3357 {
3358 expression (&exp);
3359 if (exp.X_op != O_symbol)
3360 {
3361 as_bad (_("bad .weakext directive"));
3362 ignore_rest_of_line ();
3363 return;
3364 }
3365 symbol_set_value_expression (symbolP, &exp);
3366 }
3367 }
3368
3369 S_SET_WEAK (symbolP);
3370
3371 demand_empty_rest_of_line ();
3372 }
3373 #endif /* not TC_MIPS */
3374 \f
3375 /* Handle .stabs directives. The actual parsing routine is done by a
3376 generic routine. This routine is called via OBJ_PROCESS_STAB.
3377 When this is called, input_line_pointer will be pointing at the
3378 value field of the stab.
3379
3380 .stabs directives have five fields:
3381 "string" a string, encoding the type information.
3382 code a numeric code, defined in <stab.h>
3383 0 a zero
3384 desc a zero or line number
3385 value a numeric value or an address.
3386
3387 If the value is relocatable, we transform this into:
3388 iss points as an index into string space
3389 value value from lookup of the name
3390 st st from lookup of the name
3391 sc sc from lookup of the name
3392 index code|CODE_MASK
3393
3394 If the value is not relocatable, we transform this into:
3395 iss points as an index into string space
3396 value value
3397 st st_Nil
3398 sc sc_Nil
3399 index code|CODE_MASK
3400
3401 .stabn directives have four fields (string is null):
3402 code a numeric code, defined in <stab.h>
3403 0 a zero
3404 desc a zero or a line number
3405 value a numeric value or an address. */
3406
3407 void
3408 ecoff_stab (segT sec ATTRIBUTE_UNUSED,
3409 int what,
3410 const char *string,
3411 int type,
3412 int other,
3413 int desc)
3414 {
3415 efdr_t *save_file_ptr = cur_file_ptr;
3416 symbolS *sym;
3417 symint_t value;
3418 bfd_vma addend;
3419 st_t st;
3420 sc_t sc;
3421 symint_t indx;
3422 localsym_t *hold = NULL;
3423
3424 ecoff_debugging_seen = 1;
3425
3426 /* We don't handle .stabd. */
3427 if (what != 's' && what != 'n')
3428 {
3429 as_bad (_(".stab%c is not supported"), what);
3430 return;
3431 }
3432
3433 /* A .stabn uses a null name, not an empty string. */
3434 if (what == 'n')
3435 string = NULL;
3436
3437 /* We ignore the other field. */
3438 if (other != 0)
3439 as_warn (_(".stab%c: ignoring non-zero other field"), what);
3440
3441 /* Make sure we have a current file. */
3442 if (cur_file_ptr == (efdr_t *) NULL)
3443 {
3444 add_file ((const char *) NULL, 0, 1);
3445 save_file_ptr = cur_file_ptr;
3446 }
3447
3448 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
3449 signal to gdb. */
3450 if (stabs_seen == 0)
3451 mark_stabs (0);
3452
3453 /* Line number stabs are handled differently, since they have two
3454 values, the line number and the address of the label. We use the
3455 index field (aka desc) to hold the line number, and the value
3456 field to hold the address. The symbol type is st_Label, which
3457 should be different from the other stabs, so that gdb can
3458 recognize it. */
3459 if (type == N_SLINE)
3460 {
3461 SYMR dummy_symr;
3462 char *name;
3463 char name_end;
3464
3465 #ifndef NO_LISTING
3466 if (listing)
3467 listing_source_line ((unsigned int) desc);
3468 #endif
3469
3470 dummy_symr.index = desc;
3471 if (dummy_symr.index != desc)
3472 {
3473 as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"),
3474 desc, what);
3475 return;
3476 }
3477
3478 name_end = get_symbol_name (&name);
3479 sym = symbol_find_or_make (name);
3480 (void) restore_line_pointer (name_end);
3481
3482 value = 0;
3483 addend = 0;
3484 st = st_Label;
3485 sc = sc_Text;
3486 indx = desc;
3487 }
3488 else
3489 {
3490 #ifndef NO_LISTING
3491 if (listing && (type == N_SO || type == N_SOL))
3492 listing_source_file (string);
3493 #endif
3494
3495 if (ISDIGIT (*input_line_pointer)
3496 || *input_line_pointer == '-'
3497 || *input_line_pointer == '+')
3498 {
3499 st = st_Nil;
3500 sc = sc_Nil;
3501 sym = (symbolS *) NULL;
3502 value = get_absolute_expression ();
3503 addend = 0;
3504 }
3505 else if (! is_name_beginner ((unsigned char) *input_line_pointer))
3506 {
3507 as_warn (_("illegal .stab%c directive, bad character"), what);
3508 return;
3509 }
3510 else
3511 {
3512 expressionS exp;
3513
3514 sc = sc_Nil;
3515 st = st_Nil;
3516
3517 expression (&exp);
3518 if (exp.X_op == O_constant)
3519 {
3520 sym = NULL;
3521 value = exp.X_add_number;
3522 addend = 0;
3523 }
3524 else if (exp.X_op == O_symbol)
3525 {
3526 sym = exp.X_add_symbol;
3527 value = 0;
3528 addend = exp.X_add_number;
3529 }
3530 else
3531 {
3532 sym = make_expr_symbol (&exp);
3533 value = 0;
3534 addend = 0;
3535 }
3536 }
3537
3538 indx = ECOFF_MARK_STAB (type);
3539 }
3540
3541 /* Don't store the stabs symbol we are creating as the type of the
3542 ECOFF symbol. We want to compute the type of the ECOFF symbol
3543 independently. */
3544 if (sym != (symbolS *) NULL)
3545 hold = symbol_get_obj (sym)->ecoff_symbol;
3546
3547 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx);
3548
3549 if (sym != (symbolS *) NULL)
3550 symbol_get_obj (sym)->ecoff_symbol = hold;
3551
3552 /* Restore normal file type. */
3553 cur_file_ptr = save_file_ptr;
3554 }
3555 \f
3556 /* Frob an ECOFF symbol. Small common symbols go into a special
3557 .scommon section rather than bfd_com_section. */
3558
3559 void
3560 ecoff_frob_symbol (symbolS *sym)
3561 {
3562 if (S_IS_COMMON (sym)
3563 && S_GET_VALUE (sym) > 0
3564 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput))
3565 {
3566 static asection scom_section;
3567 static asymbol scom_symbol;
3568
3569 /* We must construct a fake section similar to bfd_com_section
3570 but with the name .scommon. */
3571 if (scom_section.name == NULL)
3572 {
3573 scom_section = *bfd_com_section_ptr;
3574 scom_section.name = ".scommon";
3575 scom_section.output_section = &scom_section;
3576 scom_section.symbol = &scom_symbol;
3577 scom_section.symbol_ptr_ptr = &scom_section.symbol;
3578 scom_symbol = *bfd_com_section_ptr->symbol;
3579 scom_symbol.name = ".scommon";
3580 scom_symbol.section = &scom_section;
3581 }
3582 S_SET_SEGMENT (sym, &scom_section);
3583 }
3584
3585 /* Double check weak symbols. */
3586 if (S_IS_WEAK (sym))
3587 {
3588 if (S_IS_COMMON (sym))
3589 as_bad (_("symbol `%s' can not be both weak and common"),
3590 S_GET_NAME (sym));
3591 }
3592 }
3593 \f
3594 /* Add bytes to the symbolic information buffer. */
3595
3596 static char *
3597 ecoff_add_bytes (char **buf,
3598 char **bufend,
3599 char *bufptr,
3600 unsigned long need)
3601 {
3602 unsigned long at;
3603 unsigned long want;
3604
3605 at = bufptr - *buf;
3606 need -= *bufend - bufptr;
3607 if (need < PAGE_SIZE)
3608 need = PAGE_SIZE;
3609 want = (*bufend - *buf) + need;
3610 *buf = XRESIZEVEC (char, *buf, want);
3611 *bufend = *buf + want;
3612 return *buf + at;
3613 }
3614
3615 /* Adjust the symbolic information buffer to the alignment required
3616 for the ECOFF target debugging information. */
3617
3618 static unsigned long
3619 ecoff_padding_adjust (const struct ecoff_debug_swap *backend,
3620 char **buf,
3621 char **bufend,
3622 unsigned long offset,
3623 char **bufptrptr)
3624 {
3625 bfd_size_type align;
3626
3627 align = backend->debug_align;
3628 if ((offset & (align - 1)) != 0)
3629 {
3630 unsigned long add;
3631
3632 add = align - (offset & (align - 1));
3633 if ((unsigned long) (*bufend - (*buf + offset)) < add)
3634 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add);
3635 memset (*buf + offset, 0, add);
3636 offset += add;
3637 if (bufptrptr != (char **) NULL)
3638 *bufptrptr = *buf + offset;
3639 }
3640
3641 return offset;
3642 }
3643
3644 /* Build the line number information. */
3645
3646 static unsigned long
3647 ecoff_build_lineno (const struct ecoff_debug_swap *backend,
3648 char **buf,
3649 char **bufend,
3650 unsigned long offset,
3651 long *linecntptr)
3652 {
3653 char *bufptr;
3654 lineno_list_t *l;
3655 lineno_list_t *last;
3656 efdr_t *file;
3657 proc_t *proc;
3658 unsigned long c;
3659 long iline;
3660 long totcount;
3661 lineno_list_t first;
3662 lineno_list_t *local_first_lineno = first_lineno;
3663
3664 if (linecntptr != (long *) NULL)
3665 *linecntptr = 0;
3666
3667 bufptr = *buf + offset;
3668
3669 file = (efdr_t *) NULL;
3670 proc = (proc_t *) NULL;
3671 last = (lineno_list_t *) NULL;
3672 c = offset;
3673 iline = 0;
3674 totcount = 0;
3675
3676 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to
3677 remove this code. */
3678 /* For some reason the address of the first procedure is ignored
3679 when reading line numbers. This doesn't matter if the address of
3680 the first procedure is 0, but when gcc is generating MIPS
3681 embedded PIC code, it will put strings in the .text section
3682 before the first procedure. We cope by inserting a dummy line if
3683 the address of the first procedure is not 0. Hopefully this
3684 won't screw things up too badly.
3685
3686 Don't do this for ECOFF assembly source line numbers. They work
3687 without this extra attention. */
3688 if (debug_type != DEBUG_ECOFF
3689 && first_proc_ptr != (proc_t *) NULL
3690 && local_first_lineno != (lineno_list_t *) NULL
3691 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym)
3692 + bfd_section_vma (S_GET_SEGMENT (first_proc_ptr->sym->as_sym)))
3693 != 0))
3694 {
3695 first.file = local_first_lineno->file;
3696 first.proc = local_first_lineno->proc;
3697 first.frag = &zero_address_frag;
3698 first.paddr = 0;
3699 first.lineno = 0;
3700
3701 first.next = local_first_lineno;
3702 local_first_lineno = &first;
3703 }
3704
3705 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next)
3706 {
3707 long count;
3708 long delta;
3709
3710 /* Get the offset to the memory address of the next line number
3711 (in words). Do this first, so that we can skip ahead to the
3712 next useful line number entry. */
3713 if (l->next == (lineno_list_t *) NULL)
3714 {
3715 /* We want a count of zero, but it will be decremented
3716 before it is used. */
3717 count = 1;
3718 }
3719 else if (l->next->frag->fr_address + l->next->paddr
3720 > l->frag->fr_address + l->paddr)
3721 {
3722 count = ((l->next->frag->fr_address + l->next->paddr
3723 - (l->frag->fr_address + l->paddr))
3724 >> 2);
3725 }
3726 else
3727 {
3728 /* Don't change last, so we still get the right delta. */
3729 continue;
3730 }
3731
3732 if (l->file != file || l->proc != proc)
3733 {
3734 if (l->proc != proc && proc != (proc_t *) NULL)
3735 proc->pdr.lnHigh = last->lineno;
3736 if (l->file != file && file != (efdr_t *) NULL)
3737 {
3738 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3739 file->fdr.cline = totcount + count;
3740 if (linecntptr != (long *) NULL)
3741 *linecntptr += totcount + count;
3742 totcount = 0;
3743 }
3744
3745 if (l->file != file)
3746 {
3747 efdr_t *last_file = file;
3748
3749 file = l->file;
3750 if (last_file != (efdr_t *) NULL)
3751 file->fdr.ilineBase
3752 = last_file->fdr.ilineBase + last_file->fdr.cline;
3753 else
3754 file->fdr.ilineBase = 0;
3755 file->fdr.cbLineOffset = c;
3756 }
3757 if (l->proc != proc)
3758 {
3759 proc = l->proc;
3760 if (proc != (proc_t *) NULL)
3761 {
3762 proc->pdr.lnLow = l->lineno;
3763 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset;
3764 proc->pdr.iline = totcount;
3765 }
3766 }
3767
3768 last = (lineno_list_t *) NULL;
3769 }
3770
3771 totcount += count;
3772
3773 /* Get the offset to this line number. */
3774 if (last == (lineno_list_t *) NULL)
3775 delta = 0;
3776 else
3777 delta = l->lineno - last->lineno;
3778
3779 /* Put in the offset to this line number. */
3780 while (delta != 0)
3781 {
3782 int setcount;
3783
3784 /* 1 is added to each count read. */
3785 --count;
3786 /* We can only adjust the word count by up to 15 words at a
3787 time. */
3788 if (count <= 0x0f)
3789 {
3790 setcount = count;
3791 count = 0;
3792 }
3793 else
3794 {
3795 setcount = 0x0f;
3796 count -= 0x0f;
3797 }
3798 if (delta >= -7 && delta <= 7)
3799 {
3800 if (bufptr >= *bufend)
3801 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3802 *bufptr++ = setcount + (delta << 4);
3803 delta = 0;
3804 ++c;
3805 }
3806 else
3807 {
3808 int set;
3809
3810 if (*bufend - bufptr < 3)
3811 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3);
3812 *bufptr++ = setcount + (8 << 4);
3813 if (delta < -0x8000)
3814 {
3815 set = -0x8000;
3816 delta += 0x8000;
3817 }
3818 else if (delta > 0x7fff)
3819 {
3820 set = 0x7fff;
3821 delta -= 0x7fff;
3822 }
3823 else
3824 {
3825 set = delta;
3826 delta = 0;
3827 }
3828 *bufptr++ = set >> 8;
3829 *bufptr++ = set & 0xffff;
3830 c += 3;
3831 }
3832 }
3833
3834 /* Finish adjusting the count. */
3835 while (count > 0)
3836 {
3837 if (bufptr >= *bufend)
3838 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3839 /* 1 is added to each count read. */
3840 --count;
3841 if (count > 0x0f)
3842 {
3843 *bufptr++ = 0x0f;
3844 count -= 0x0f;
3845 }
3846 else
3847 {
3848 *bufptr++ = count;
3849 count = 0;
3850 }
3851 ++c;
3852 }
3853
3854 ++iline;
3855 last = l;
3856 }
3857
3858 if (proc != (proc_t *) NULL)
3859 proc->pdr.lnHigh = last->lineno;
3860 if (file != (efdr_t *) NULL)
3861 {
3862 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3863 file->fdr.cline = totcount;
3864 }
3865
3866 if (linecntptr != (long *) NULL)
3867 *linecntptr += totcount;
3868
3869 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr);
3870
3871 return c;
3872 }
3873
3874 /* Build and swap out the symbols. */
3875
3876 static unsigned long
3877 ecoff_build_symbols (const struct ecoff_debug_swap *backend,
3878 char **buf,
3879 char **bufend,
3880 unsigned long offset)
3881 {
3882 const bfd_size_type external_sym_size = backend->external_sym_size;
3883 void (* const swap_sym_out) (bfd *, const SYMR *, void *)
3884 = backend->swap_sym_out;
3885 char *sym_out;
3886 long isym;
3887 vlinks_t *file_link;
3888
3889 sym_out = *buf + offset;
3890
3891 isym = 0;
3892
3893 /* The symbols are stored by file. */
3894 for (file_link = file_desc.first;
3895 file_link != (vlinks_t *) NULL;
3896 file_link = file_link->next)
3897 {
3898 int ifilesym;
3899 int fil_cnt;
3900 efdr_t *fil_ptr;
3901 efdr_t *fil_end;
3902
3903 if (file_link->next == (vlinks_t *) NULL)
3904 fil_cnt = file_desc.objects_last_page;
3905 else
3906 fil_cnt = file_desc.objects_per_page;
3907 fil_ptr = file_link->datum->file;
3908 fil_end = fil_ptr + fil_cnt;
3909 for (; fil_ptr < fil_end; fil_ptr++)
3910 {
3911 vlinks_t *sym_link;
3912
3913 fil_ptr->fdr.isymBase = isym;
3914 ifilesym = isym;
3915 for (sym_link = fil_ptr->symbols.first;
3916 sym_link != (vlinks_t *) NULL;
3917 sym_link = sym_link->next)
3918 {
3919 int sym_cnt;
3920 localsym_t *sym_ptr;
3921 localsym_t *sym_end;
3922
3923 if (sym_link->next == (vlinks_t *) NULL)
3924 sym_cnt = fil_ptr->symbols.objects_last_page;
3925 else
3926 sym_cnt = fil_ptr->symbols.objects_per_page;
3927 sym_ptr = sym_link->datum->sym;
3928 sym_end = sym_ptr + sym_cnt;
3929 for (; sym_ptr < sym_end; sym_ptr++)
3930 {
3931 int local;
3932 symbolS *as_sym;
3933 forward_t *f;
3934
3935 know (sym_ptr->file_ptr == fil_ptr);
3936
3937 /* If there is no associated gas symbol, then this
3938 is a pure debugging symbol. We have already
3939 added the name (if any) to fil_ptr->strings.
3940 Otherwise we must decide whether this is an
3941 external or a local symbol (actually, it may be
3942 both if the local provides additional debugging
3943 information for the external). */
3944 local = 1;
3945 as_sym = sym_ptr->as_sym;
3946 if (as_sym != (symbolS *) NULL)
3947 {
3948 symint_t indx;
3949
3950 /* The value of a block start symbol is the
3951 offset from the start of the procedure. For
3952 other symbols we just use the gas value (but
3953 we must offset it by the vma of the section,
3954 just as BFD does, because BFD will not see
3955 this value). */
3956 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block
3957 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text)
3958 {
3959 symbolS *begin_sym;
3960
3961 know (sym_ptr->proc_ptr != (proc_t *) NULL);
3962 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
3963 if (S_GET_SEGMENT (as_sym)
3964 != S_GET_SEGMENT (begin_sym))
3965 as_warn (_(".begin/.bend in different segments"));
3966 sym_ptr->ecoff_sym.asym.value =
3967 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
3968 }
3969 else
3970 sym_ptr->ecoff_sym.asym.value =
3971 (S_GET_VALUE (as_sym)
3972 + bfd_section_vma (S_GET_SEGMENT (as_sym))
3973 + sym_ptr->addend);
3974
3975 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym);
3976
3977 /* Set st_Proc to st_StaticProc for local
3978 functions. */
3979 if (sym_ptr->ecoff_sym.asym.st == st_Proc
3980 && S_IS_DEFINED (as_sym)
3981 && ! S_IS_EXTERNAL (as_sym)
3982 && ! S_IS_WEAK (as_sym))
3983 sym_ptr->ecoff_sym.asym.st = st_StaticProc;
3984
3985 /* Get the type and storage class based on where
3986 the symbol actually wound up. Traditionally,
3987 N_LBRAC and N_RBRAC are *not* relocated. */
3988 indx = sym_ptr->ecoff_sym.asym.index;
3989 if (sym_ptr->ecoff_sym.asym.st == st_Nil
3990 && sym_ptr->ecoff_sym.asym.sc == sc_Nil
3991 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
3992 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC)
3993 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC))))
3994 {
3995 segT seg;
3996 const char *segname;
3997 st_t st;
3998 sc_t sc;
3999
4000 seg = S_GET_SEGMENT (as_sym);
4001 segname = segment_name (seg);
4002
4003 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4004 && (S_IS_EXTERNAL (as_sym)
4005 || S_IS_WEAK (as_sym)
4006 || ! S_IS_DEFINED (as_sym)))
4007 {
4008 if ((symbol_get_bfdsym (as_sym)->flags
4009 & BSF_FUNCTION) != 0)
4010 st = st_Proc;
4011 else
4012 st = st_Global;
4013 }
4014 else if (seg == text_section)
4015 st = st_Label;
4016 else
4017 st = st_Static;
4018
4019 if (! S_IS_DEFINED (as_sym))
4020 {
4021 valueT s;
4022
4023 s = symbol_get_obj (as_sym)->ecoff_extern_size;
4024 if (s == 0
4025 || s > bfd_get_gp_size (stdoutput))
4026 sc = sc_Undefined;
4027 else
4028 {
4029 sc = sc_SUndefined;
4030 sym_ptr->ecoff_sym.asym.value = s;
4031 }
4032 #ifdef S_SET_SIZE
4033 S_SET_SIZE (as_sym, s);
4034 #endif
4035 }
4036 else if (S_IS_COMMON (as_sym))
4037 {
4038 if (S_GET_VALUE (as_sym) > 0
4039 && (S_GET_VALUE (as_sym)
4040 <= bfd_get_gp_size (stdoutput)))
4041 sc = sc_SCommon;
4042 else
4043 sc = sc_Common;
4044 }
4045 else if (seg == text_section)
4046 sc = sc_Text;
4047 else if (seg == data_section)
4048 sc = sc_Data;
4049 else if (strcmp (segname, ".rdata") == 0
4050 || strcmp (segname, ".rodata") == 0)
4051 sc = sc_RData;
4052 else if (strcmp (segname, ".sdata") == 0)
4053 sc = sc_SData;
4054 else if (seg == bss_section)
4055 sc = sc_Bss;
4056 else if (strcmp (segname, ".sbss") == 0)
4057 sc = sc_SBss;
4058 else if (seg == bfd_abs_section_ptr)
4059 sc = sc_Abs;
4060 else
4061 {
4062 /* This must be a user named section.
4063 This is not possible in ECOFF, but it
4064 is in ELF. */
4065 sc = sc_Data;
4066 }
4067
4068 sym_ptr->ecoff_sym.asym.st = (int) st;
4069 sym_ptr->ecoff_sym.asym.sc = (int) sc;
4070 }
4071
4072 /* This is just an external symbol if it is
4073 outside a procedure and it has a type.
4074 FIXME: g++ will generate symbols which have
4075 different names in the debugging information
4076 than the actual symbol. Should we handle
4077 them here? */
4078 if ((S_IS_EXTERNAL (as_sym)
4079 || S_IS_WEAK (as_sym)
4080 || ! S_IS_DEFINED (as_sym))
4081 && sym_ptr->proc_ptr == (proc_t *) NULL
4082 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil
4083 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym))
4084 local = 0;
4085
4086 /* This is just an external symbol if it is a
4087 common symbol. */
4088 if (S_IS_COMMON (as_sym))
4089 local = 0;
4090
4091 /* If an st_end symbol has an associated gas
4092 symbol, then it is a local label created for
4093 a .bend or .end directive. Stabs line
4094 numbers will have FAKE_LABEL_CHAR in the names. */
4095 if (local
4096 && sym_ptr->ecoff_sym.asym.st != st_End
4097 && strchr (sym_ptr->name, FAKE_LABEL_CHAR) == 0)
4098 sym_ptr->ecoff_sym.asym.iss =
4099 add_string (&fil_ptr->strings,
4100 fil_ptr->str_hash,
4101 sym_ptr->name,
4102 (shash_t **) NULL);
4103 }
4104
4105 /* We now know the index of this symbol; fill in
4106 locations that have been waiting for that
4107 information. */
4108 if (sym_ptr->begin_ptr != (localsym_t *) NULL)
4109 {
4110 localsym_t *begin_ptr;
4111 st_t begin_type;
4112
4113 know (local);
4114 begin_ptr = sym_ptr->begin_ptr;
4115 know (begin_ptr->sym_index != -1);
4116 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index;
4117 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4118 sym_ptr->ecoff_sym.asym.iss =
4119 begin_ptr->ecoff_sym.asym.iss;
4120
4121 begin_type = (st_t) begin_ptr->ecoff_sym.asym.st;
4122 if (begin_type == st_File
4123 || begin_type == st_Block)
4124 {
4125 begin_ptr->ecoff_sym.asym.index =
4126 isym - ifilesym + 1;
4127 (*swap_sym_out) (stdoutput,
4128 &begin_ptr->ecoff_sym.asym,
4129 (*buf
4130 + offset
4131 + (begin_ptr->sym_index
4132 * external_sym_size)));
4133 }
4134 else
4135 {
4136 know (begin_ptr->index_ptr != (aux_t *) NULL);
4137 begin_ptr->index_ptr->data.isym =
4138 isym - ifilesym + 1;
4139 }
4140
4141 /* The value of the symbol marking the end of a
4142 procedure is the size of the procedure. The
4143 value of the symbol marking the end of a
4144 block is the offset from the start of the
4145 procedure to the block. */
4146 if (begin_type == st_Proc
4147 || begin_type == st_StaticProc)
4148 {
4149 know (as_sym != (symbolS *) NULL);
4150 know (begin_ptr->as_sym != (symbolS *) NULL);
4151 if (S_GET_SEGMENT (as_sym)
4152 != S_GET_SEGMENT (begin_ptr->as_sym))
4153 as_warn (_(".begin/.bend in different segments"));
4154 sym_ptr->ecoff_sym.asym.value =
4155 (S_GET_VALUE (as_sym)
4156 - S_GET_VALUE (begin_ptr->as_sym));
4157
4158 /* If the size is odd, this is probably a
4159 mips16 function; force it to be even. */
4160 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0)
4161 ++sym_ptr->ecoff_sym.asym.value;
4162
4163 #ifdef S_SET_SIZE
4164 S_SET_SIZE (begin_ptr->as_sym,
4165 sym_ptr->ecoff_sym.asym.value);
4166 #endif
4167 }
4168 else if (begin_type == st_Block
4169 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4170 {
4171 symbolS *begin_sym;
4172
4173 know (as_sym != (symbolS *) NULL);
4174 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4175 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4176 if (S_GET_SEGMENT (as_sym)
4177 != S_GET_SEGMENT (begin_sym))
4178 as_warn (_(".begin/.bend in different segments"));
4179 sym_ptr->ecoff_sym.asym.value =
4180 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4181 }
4182 }
4183
4184 for (f = sym_ptr->forward_ref;
4185 f != (forward_t *) NULL;
4186 f = f->next)
4187 {
4188 know (local);
4189 f->ifd_ptr->data.isym = fil_ptr->file_index;
4190 f->index_ptr->data.rndx.index = isym - ifilesym;
4191 }
4192
4193 if (local)
4194 {
4195 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size)
4196 sym_out = ecoff_add_bytes (buf, bufend,
4197 sym_out,
4198 external_sym_size);
4199 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym,
4200 sym_out);
4201 sym_out += external_sym_size;
4202
4203 sym_ptr->sym_index = isym;
4204
4205 if (sym_ptr->proc_ptr != (proc_t *) NULL
4206 && sym_ptr->proc_ptr->sym == sym_ptr)
4207 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym;
4208
4209 ++isym;
4210 }
4211
4212 /* Record the local symbol index and file number in
4213 case this is an external symbol. Note that this
4214 destroys the asym.index field. */
4215 if (as_sym != (symbolS *) NULL
4216 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr)
4217 {
4218 if ((sym_ptr->ecoff_sym.asym.st == st_Proc
4219 || sym_ptr->ecoff_sym.asym.st == st_StaticProc)
4220 && local)
4221 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1;
4222 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index;
4223
4224 /* Don't try to merge an FDR which has an
4225 external symbol attached to it. */
4226 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym))
4227 fil_ptr->fdr.fMerge = 0;
4228 }
4229 }
4230 }
4231 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase;
4232 }
4233 }
4234
4235 return offset + isym * external_sym_size;
4236 }
4237
4238 /* Swap out the procedure information. */
4239
4240 static unsigned long
4241 ecoff_build_procs (const struct ecoff_debug_swap *backend,
4242 char **buf,
4243 char **bufend,
4244 unsigned long offset)
4245 {
4246 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4247 void (* const swap_pdr_out) (bfd *, const PDR *, void *)
4248 = backend->swap_pdr_out;
4249 char *pdr_out;
4250 long iproc;
4251 vlinks_t *file_link;
4252
4253 pdr_out = *buf + offset;
4254
4255 iproc = 0;
4256
4257 /* The procedures are stored by file. */
4258 for (file_link = file_desc.first;
4259 file_link != (vlinks_t *) NULL;
4260 file_link = file_link->next)
4261 {
4262 int fil_cnt;
4263 efdr_t *fil_ptr;
4264 efdr_t *fil_end;
4265
4266 if (file_link->next == (vlinks_t *) NULL)
4267 fil_cnt = file_desc.objects_last_page;
4268 else
4269 fil_cnt = file_desc.objects_per_page;
4270 fil_ptr = file_link->datum->file;
4271 fil_end = fil_ptr + fil_cnt;
4272 for (; fil_ptr < fil_end; fil_ptr++)
4273 {
4274 vlinks_t *proc_link;
4275 int first;
4276
4277 fil_ptr->fdr.ipdFirst = iproc;
4278 first = 1;
4279 for (proc_link = fil_ptr->procs.first;
4280 proc_link != (vlinks_t *) NULL;
4281 proc_link = proc_link->next)
4282 {
4283 int prc_cnt;
4284 proc_t *proc_ptr;
4285 proc_t *proc_end;
4286
4287 if (proc_link->next == (vlinks_t *) NULL)
4288 prc_cnt = fil_ptr->procs.objects_last_page;
4289 else
4290 prc_cnt = fil_ptr->procs.objects_per_page;
4291 proc_ptr = proc_link->datum->proc;
4292 proc_end = proc_ptr + prc_cnt;
4293 for (; proc_ptr < proc_end; proc_ptr++)
4294 {
4295 symbolS *adr_sym;
4296 unsigned long adr;
4297
4298 adr_sym = proc_ptr->sym->as_sym;
4299 adr = (S_GET_VALUE (adr_sym)
4300 + bfd_section_vma (S_GET_SEGMENT (adr_sym)));
4301 if (first)
4302 {
4303 /* This code used to force the adr of the very
4304 first fdr to be 0. However, the native tools
4305 don't do that, and I can't remember why it
4306 used to work that way, so I took it out. */
4307 fil_ptr->fdr.adr = adr;
4308 first = 0;
4309 }
4310 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr;
4311 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size)
4312 pdr_out = ecoff_add_bytes (buf, bufend,
4313 pdr_out,
4314 external_pdr_size);
4315 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out);
4316 pdr_out += external_pdr_size;
4317 ++iproc;
4318 }
4319 }
4320 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst;
4321 }
4322 }
4323
4324 return offset + iproc * external_pdr_size;
4325 }
4326
4327 /* Swap out the aux information. */
4328
4329 static unsigned long
4330 ecoff_build_aux (const struct ecoff_debug_swap *backend,
4331 char **buf,
4332 char **bufend,
4333 unsigned long offset)
4334 {
4335 int bigendian;
4336 union aux_ext *aux_out;
4337 long iaux;
4338 vlinks_t *file_link;
4339
4340 bigendian = bfd_big_endian (stdoutput);
4341
4342 aux_out = (union aux_ext *) (*buf + offset);
4343
4344 iaux = 0;
4345
4346 /* The aux entries are stored by file. */
4347 for (file_link = file_desc.first;
4348 file_link != (vlinks_t *) NULL;
4349 file_link = file_link->next)
4350 {
4351 int fil_cnt;
4352 efdr_t *fil_ptr;
4353 efdr_t *fil_end;
4354
4355 if (file_link->next == (vlinks_t *) NULL)
4356 fil_cnt = file_desc.objects_last_page;
4357 else
4358 fil_cnt = file_desc.objects_per_page;
4359 fil_ptr = file_link->datum->file;
4360 fil_end = fil_ptr + fil_cnt;
4361 for (; fil_ptr < fil_end; fil_ptr++)
4362 {
4363 vlinks_t *aux_link;
4364
4365 fil_ptr->fdr.fBigendian = bigendian;
4366 fil_ptr->fdr.iauxBase = iaux;
4367 for (aux_link = fil_ptr->aux_syms.first;
4368 aux_link != (vlinks_t *) NULL;
4369 aux_link = aux_link->next)
4370 {
4371 int aux_cnt;
4372 aux_t *aux_ptr;
4373 aux_t *aux_end;
4374
4375 if (aux_link->next == (vlinks_t *) NULL)
4376 aux_cnt = fil_ptr->aux_syms.objects_last_page;
4377 else
4378 aux_cnt = fil_ptr->aux_syms.objects_per_page;
4379 aux_ptr = aux_link->datum->aux;
4380 aux_end = aux_ptr + aux_cnt;
4381 for (; aux_ptr < aux_end; aux_ptr++)
4382 {
4383 if ((unsigned long) (*bufend - (char *) aux_out)
4384 < sizeof (union aux_ext))
4385 aux_out = ((union aux_ext *)
4386 ecoff_add_bytes (buf, bufend,
4387 (char *) aux_out,
4388 sizeof (union aux_ext)));
4389 switch (aux_ptr->type)
4390 {
4391 case aux_tir:
4392 (*backend->swap_tir_out) (bigendian,
4393 &aux_ptr->data.ti,
4394 &aux_out->a_ti);
4395 break;
4396 case aux_rndx:
4397 (*backend->swap_rndx_out) (bigendian,
4398 &aux_ptr->data.rndx,
4399 &aux_out->a_rndx);
4400 break;
4401 case aux_dnLow:
4402 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow,
4403 aux_out);
4404 break;
4405 case aux_dnHigh:
4406 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh,
4407 aux_out);
4408 break;
4409 case aux_isym:
4410 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym,
4411 aux_out);
4412 break;
4413 case aux_iss:
4414 AUX_PUT_ISS (bigendian, aux_ptr->data.iss,
4415 aux_out);
4416 break;
4417 case aux_width:
4418 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width,
4419 aux_out);
4420 break;
4421 case aux_count:
4422 AUX_PUT_COUNT (bigendian, aux_ptr->data.count,
4423 aux_out);
4424 break;
4425 }
4426
4427 ++aux_out;
4428 ++iaux;
4429 }
4430 }
4431 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase;
4432 }
4433 }
4434
4435 return ecoff_padding_adjust (backend, buf, bufend,
4436 offset + iaux * sizeof (union aux_ext),
4437 (char **) NULL);
4438 }
4439
4440 /* Copy out the strings from a varray_t. This returns the number of
4441 bytes copied, rather than the new offset. */
4442
4443 static unsigned long
4444 ecoff_build_strings (char **buf,
4445 char **bufend,
4446 unsigned long offset,
4447 varray_t *vp)
4448 {
4449 unsigned long istr;
4450 char *str_out;
4451 vlinks_t *str_link;
4452
4453 str_out = *buf + offset;
4454
4455 istr = 0;
4456
4457 for (str_link = vp->first;
4458 str_link != (vlinks_t *) NULL;
4459 str_link = str_link->next)
4460 {
4461 unsigned long str_cnt;
4462
4463 if (str_link->next == (vlinks_t *) NULL)
4464 str_cnt = vp->objects_last_page;
4465 else
4466 str_cnt = vp->objects_per_page;
4467
4468 if ((unsigned long)(*bufend - str_out) < str_cnt)
4469 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt);
4470
4471 memcpy (str_out, str_link->datum->byte, str_cnt);
4472 str_out += str_cnt;
4473 istr += str_cnt;
4474 }
4475
4476 return istr;
4477 }
4478
4479 /* Dump out the local strings. */
4480
4481 static unsigned long
4482 ecoff_build_ss (const struct ecoff_debug_swap *backend,
4483 char **buf,
4484 char **bufend,
4485 unsigned long offset)
4486 {
4487 long iss;
4488 vlinks_t *file_link;
4489
4490 iss = 0;
4491
4492 for (file_link = file_desc.first;
4493 file_link != (vlinks_t *) NULL;
4494 file_link = file_link->next)
4495 {
4496 int fil_cnt;
4497 efdr_t *fil_ptr;
4498 efdr_t *fil_end;
4499
4500 if (file_link->next == (vlinks_t *) NULL)
4501 fil_cnt = file_desc.objects_last_page;
4502 else
4503 fil_cnt = file_desc.objects_per_page;
4504 fil_ptr = file_link->datum->file;
4505 fil_end = fil_ptr + fil_cnt;
4506 for (; fil_ptr < fil_end; fil_ptr++)
4507 {
4508 long ss_cnt;
4509
4510 fil_ptr->fdr.issBase = iss;
4511 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss,
4512 &fil_ptr->strings);
4513 fil_ptr->fdr.cbSs = ss_cnt;
4514 iss += ss_cnt;
4515 }
4516 }
4517
4518 return ecoff_padding_adjust (backend, buf, bufend, offset + iss,
4519 (char **) NULL);
4520 }
4521
4522 /* Swap out the file descriptors. */
4523
4524 static unsigned long
4525 ecoff_build_fdr (const struct ecoff_debug_swap *backend,
4526 char **buf,
4527 char **bufend,
4528 unsigned long offset)
4529 {
4530 const bfd_size_type external_fdr_size = backend->external_fdr_size;
4531 void (* const swap_fdr_out) (bfd *, const FDR *, void *)
4532 = backend->swap_fdr_out;
4533 long ifile;
4534 char *fdr_out;
4535 vlinks_t *file_link;
4536
4537 ifile = 0;
4538
4539 fdr_out = *buf + offset;
4540
4541 for (file_link = file_desc.first;
4542 file_link != (vlinks_t *) NULL;
4543 file_link = file_link->next)
4544 {
4545 int fil_cnt;
4546 efdr_t *fil_ptr;
4547 efdr_t *fil_end;
4548
4549 if (file_link->next == (vlinks_t *) NULL)
4550 fil_cnt = file_desc.objects_last_page;
4551 else
4552 fil_cnt = file_desc.objects_per_page;
4553 fil_ptr = file_link->datum->file;
4554 fil_end = fil_ptr + fil_cnt;
4555 for (; fil_ptr < fil_end; fil_ptr++)
4556 {
4557 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size)
4558 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out,
4559 external_fdr_size);
4560 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out);
4561 fdr_out += external_fdr_size;
4562 ++ifile;
4563 }
4564 }
4565
4566 return offset + ifile * external_fdr_size;
4567 }
4568
4569 /* Set up the external symbols. These are supposed to be handled by
4570 the backend. This routine just gets the right information and
4571 calls a backend function to deal with it. */
4572
4573 static void
4574 ecoff_setup_ext (void)
4575 {
4576 symbolS *sym;
4577
4578 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4579 {
4580 if (symbol_get_obj (sym)->ecoff_symbol == NULL)
4581 continue;
4582
4583 /* If this is a local symbol, then force the fields to zero. */
4584 if (! S_IS_EXTERNAL (sym)
4585 && ! S_IS_WEAK (sym)
4586 && S_IS_DEFINED (sym))
4587 {
4588 struct localsym *lsym;
4589
4590 lsym = symbol_get_obj (sym)->ecoff_symbol;
4591 lsym->ecoff_sym.asym.value = 0;
4592 lsym->ecoff_sym.asym.st = (int) st_Nil;
4593 lsym->ecoff_sym.asym.sc = (int) sc_Nil;
4594 lsym->ecoff_sym.asym.index = indexNil;
4595 }
4596
4597 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym);
4598 }
4599 }
4600
4601 /* Build the ECOFF debugging information. */
4602
4603 unsigned long
4604 ecoff_build_debug (HDRR *hdr,
4605 char **bufp,
4606 const struct ecoff_debug_swap *backend)
4607 {
4608 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4609 tag_t *ptag;
4610 tag_t *ptag_next;
4611 efdr_t *fil_ptr;
4612 int end_warning;
4613 efdr_t *hold_file_ptr;
4614 proc_t *hold_proc_ptr;
4615 symbolS *sym;
4616 char *buf;
4617 char *bufend;
4618 unsigned long offset;
4619
4620 /* Make sure we have a file. */
4621 if (first_file == (efdr_t *) NULL)
4622 add_file ((const char *) NULL, 0, 1);
4623
4624 /* Handle any top level tags. */
4625 for (ptag = top_tag_head->first_tag;
4626 ptag != (tag_t *) NULL;
4627 ptag = ptag_next)
4628 {
4629 if (ptag->forward_ref != (forward_t *) NULL)
4630 add_unknown_tag (ptag);
4631
4632 ptag_next = ptag->same_block;
4633 ptag->hash_ptr->tag_ptr = ptag->same_name;
4634 free_tag (ptag);
4635 }
4636
4637 free_thead (top_tag_head);
4638
4639 /* Look through the symbols. Add debugging information for each
4640 symbol that has not already received it. */
4641 hold_file_ptr = cur_file_ptr;
4642 hold_proc_ptr = cur_proc_ptr;
4643 cur_proc_ptr = (proc_t *) NULL;
4644 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4645 {
4646 if (symbol_get_obj (sym)->ecoff_symbol != NULL
4647 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL
4648 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0)
4649 continue;
4650
4651 cur_file_ptr = symbol_get_obj (sym)->ecoff_file;
4652 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym,
4653 (bfd_vma) 0, S_GET_VALUE (sym), indexNil);
4654 }
4655 cur_proc_ptr = hold_proc_ptr;
4656 cur_file_ptr = hold_file_ptr;
4657
4658 /* Output an ending symbol for all the files. We have to do this
4659 here for the last file, so we may as well do it for all of the
4660 files. */
4661 end_warning = 0;
4662 for (fil_ptr = first_file;
4663 fil_ptr != (efdr_t *) NULL;
4664 fil_ptr = fil_ptr->next_file)
4665 {
4666 cur_file_ptr = fil_ptr;
4667 while (cur_file_ptr->cur_scope != (scope_t *) NULL
4668 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL)
4669 {
4670 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev;
4671 if (! end_warning && ! cur_file_ptr->fake)
4672 {
4673 as_warn (_("missing .end or .bend at end of file"));
4674 end_warning = 1;
4675 }
4676 }
4677 if (cur_file_ptr->cur_scope != (scope_t *) NULL)
4678 (void) add_ecoff_symbol ((const char *) NULL,
4679 st_End, sc_Text,
4680 (symbolS *) NULL,
4681 (bfd_vma) 0,
4682 (symint_t) 0,
4683 (symint_t) 0);
4684 }
4685
4686 /* Build the symbolic information. */
4687 offset = 0;
4688 buf = XNEWVEC (char, PAGE_SIZE);
4689 bufend = buf + PAGE_SIZE;
4690
4691 /* Build the line number information. */
4692 hdr->cbLineOffset = offset;
4693 offset = ecoff_build_lineno (backend, &buf, &bufend, offset,
4694 &hdr->ilineMax);
4695 hdr->cbLine = offset - hdr->cbLineOffset;
4696
4697 /* We don't use dense numbers at all. */
4698 hdr->idnMax = 0;
4699 hdr->cbDnOffset = 0;
4700
4701 /* We can't build the PDR table until we have built the symbols,
4702 because a PDR contains a symbol index. However, we set aside
4703 space at this point. */
4704 hdr->ipdMax = proc_cnt;
4705 hdr->cbPdOffset = offset;
4706 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size)
4707 (void) ecoff_add_bytes (&buf, &bufend, buf + offset,
4708 proc_cnt * external_pdr_size);
4709 offset += proc_cnt * external_pdr_size;
4710
4711 /* Build the local symbols. */
4712 hdr->cbSymOffset = offset;
4713 offset = ecoff_build_symbols (backend, &buf, &bufend, offset);
4714 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size;
4715
4716 /* Building the symbols initializes the symbol index in the PDR's.
4717 Now we can swap out the PDR's. */
4718 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset);
4719
4720 /* We don't use optimization symbols. */
4721 hdr->ioptMax = 0;
4722 hdr->cbOptOffset = 0;
4723
4724 /* Swap out the auxiliary type information. */
4725 hdr->cbAuxOffset = offset;
4726 offset = ecoff_build_aux (backend, &buf, &bufend, offset);
4727 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext);
4728
4729 /* Copy out the local strings. */
4730 hdr->cbSsOffset = offset;
4731 offset = ecoff_build_ss (backend, &buf, &bufend, offset);
4732 hdr->issMax = offset - hdr->cbSsOffset;
4733
4734 /* We don't use relative file descriptors. */
4735 hdr->crfd = 0;
4736 hdr->cbRfdOffset = 0;
4737
4738 /* Swap out the file descriptors. */
4739 hdr->cbFdOffset = offset;
4740 offset = ecoff_build_fdr (backend, &buf, &bufend, offset);
4741 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size;
4742
4743 /* Set up the external symbols, which are handled by the BFD back
4744 end. */
4745 hdr->issExtMax = 0;
4746 hdr->cbSsExtOffset = 0;
4747 hdr->iextMax = 0;
4748 hdr->cbExtOffset = 0;
4749 ecoff_setup_ext ();
4750
4751 know ((offset & (backend->debug_align - 1)) == 0);
4752
4753 /* FIXME: This value should be determined from the .verstamp directive,
4754 with reasonable defaults in config files. */
4755 #ifdef TC_ALPHA
4756 hdr->vstamp = 0x030b;
4757 #else
4758 hdr->vstamp = 0x020b;
4759 #endif
4760
4761 *bufp = buf;
4762 return offset;
4763 }
4764 \f
4765 /* Allocate a cluster of pages. */
4766
4767 #ifndef MALLOC_CHECK
4768
4769 static page_type *
4770 allocate_cluster (unsigned long npages)
4771 {
4772 page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE);
4773
4774 #ifdef ECOFF_DEBUG
4775 if (debug > 3)
4776 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value);
4777 #endif
4778
4779 memset (value, 0, npages * PAGE_USIZE);
4780
4781 return value;
4782 }
4783
4784 static page_type *cluster_ptr = NULL;
4785 static unsigned long pages_left = 0;
4786
4787 #endif /* MALLOC_CHECK */
4788
4789 /* Allocate one page (which is initialized to 0). */
4790
4791 static page_type *
4792 allocate_page (void)
4793 {
4794 #ifndef MALLOC_CHECK
4795
4796 if (pages_left == 0)
4797 {
4798 pages_left = MAX_CLUSTER_PAGES;
4799 cluster_ptr = allocate_cluster (pages_left);
4800 }
4801
4802 pages_left--;
4803 return cluster_ptr++;
4804
4805 #else /* MALLOC_CHECK */
4806
4807 page_type *ptr;
4808
4809 ptr = xmalloc (PAGE_USIZE);
4810 memset (ptr, 0, PAGE_USIZE);
4811 return ptr;
4812
4813 #endif /* MALLOC_CHECK */
4814 }
4815 \f
4816 /* Allocate scoping information. */
4817
4818 static scope_t *
4819 allocate_scope (void)
4820 {
4821 scope_t *ptr;
4822 static scope_t initial_scope;
4823
4824 #ifndef MALLOC_CHECK
4825
4826 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4827 if (ptr != (scope_t *) NULL)
4828 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free;
4829 else
4830 {
4831 int unallocated = alloc_counts[(int) alloc_type_scope].unallocated;
4832 page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page;
4833
4834 if (unallocated == 0)
4835 {
4836 unallocated = PAGE_SIZE / sizeof (scope_t);
4837 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page ();
4838 alloc_counts[(int) alloc_type_scope].total_pages++;
4839 }
4840
4841 ptr = &cur_page->scope[--unallocated];
4842 alloc_counts[(int) alloc_type_scope].unallocated = unallocated;
4843 }
4844
4845 #else
4846
4847 ptr = XNEW (scope_t);
4848
4849 #endif
4850
4851 alloc_counts[(int) alloc_type_scope].total_alloc++;
4852 *ptr = initial_scope;
4853 return ptr;
4854 }
4855
4856 /* Free scoping information. */
4857
4858 static void
4859 free_scope (scope_t *ptr)
4860 {
4861 alloc_counts[(int) alloc_type_scope].total_free++;
4862
4863 #ifndef MALLOC_CHECK
4864 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4865 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr;
4866 #else
4867 free ((void *) ptr);
4868 #endif
4869 }
4870 \f
4871 /* Allocate links for pages in a virtual array. */
4872
4873 static vlinks_t *
4874 allocate_vlinks (void)
4875 {
4876 vlinks_t *ptr;
4877 static vlinks_t initial_vlinks;
4878
4879 #ifndef MALLOC_CHECK
4880
4881 int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated;
4882 page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page;
4883
4884 if (unallocated == 0)
4885 {
4886 unallocated = PAGE_SIZE / sizeof (vlinks_t);
4887 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page ();
4888 alloc_counts[(int) alloc_type_vlinks].total_pages++;
4889 }
4890
4891 ptr = &cur_page->vlinks[--unallocated];
4892 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated;
4893
4894 #else
4895
4896 ptr = XNEW (vlinks_t);
4897
4898 #endif
4899
4900 alloc_counts[(int) alloc_type_vlinks].total_alloc++;
4901 *ptr = initial_vlinks;
4902 return ptr;
4903 }
4904 \f
4905 /* Allocate string hash buckets. */
4906
4907 static shash_t *
4908 allocate_shash (void)
4909 {
4910 shash_t *ptr;
4911 static shash_t initial_shash;
4912
4913 #ifndef MALLOC_CHECK
4914
4915 int unallocated = alloc_counts[(int) alloc_type_shash].unallocated;
4916 page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page;
4917
4918 if (unallocated == 0)
4919 {
4920 unallocated = PAGE_SIZE / sizeof (shash_t);
4921 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page ();
4922 alloc_counts[(int) alloc_type_shash].total_pages++;
4923 }
4924
4925 ptr = &cur_page->shash[--unallocated];
4926 alloc_counts[(int) alloc_type_shash].unallocated = unallocated;
4927
4928 #else
4929
4930 ptr = XNEW (shash_t);
4931
4932 #endif
4933
4934 alloc_counts[(int) alloc_type_shash].total_alloc++;
4935 *ptr = initial_shash;
4936 return ptr;
4937 }
4938 \f
4939 /* Allocate type hash buckets. */
4940
4941 static thash_t *
4942 allocate_thash (void)
4943 {
4944 thash_t *ptr;
4945 static thash_t initial_thash;
4946
4947 #ifndef MALLOC_CHECK
4948
4949 int unallocated = alloc_counts[(int) alloc_type_thash].unallocated;
4950 page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page;
4951
4952 if (unallocated == 0)
4953 {
4954 unallocated = PAGE_SIZE / sizeof (thash_t);
4955 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page ();
4956 alloc_counts[(int) alloc_type_thash].total_pages++;
4957 }
4958
4959 ptr = &cur_page->thash[--unallocated];
4960 alloc_counts[(int) alloc_type_thash].unallocated = unallocated;
4961
4962 #else
4963
4964 ptr = XNEW (thash_t);
4965
4966 #endif
4967
4968 alloc_counts[(int) alloc_type_thash].total_alloc++;
4969 *ptr = initial_thash;
4970 return ptr;
4971 }
4972 \f
4973 /* Allocate structure, union, or enum tag information. */
4974
4975 static tag_t *
4976 allocate_tag (void)
4977 {
4978 tag_t *ptr;
4979 static tag_t initial_tag;
4980
4981 #ifndef MALLOC_CHECK
4982
4983 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
4984 if (ptr != (tag_t *) NULL)
4985 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free;
4986 else
4987 {
4988 int unallocated = alloc_counts[(int) alloc_type_tag].unallocated;
4989 page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page;
4990
4991 if (unallocated == 0)
4992 {
4993 unallocated = PAGE_SIZE / sizeof (tag_t);
4994 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page ();
4995 alloc_counts[(int) alloc_type_tag].total_pages++;
4996 }
4997
4998 ptr = &cur_page->tag[--unallocated];
4999 alloc_counts[(int) alloc_type_tag].unallocated = unallocated;
5000 }
5001
5002 #else
5003
5004 ptr = XNEW (tag_t);
5005
5006 #endif
5007
5008 alloc_counts[(int) alloc_type_tag].total_alloc++;
5009 *ptr = initial_tag;
5010 return ptr;
5011 }
5012
5013 /* Free scoping information. */
5014
5015 static void
5016 free_tag (tag_t *ptr)
5017 {
5018 alloc_counts[(int) alloc_type_tag].total_free++;
5019
5020 #ifndef MALLOC_CHECK
5021 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
5022 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr;
5023 #else
5024 free ((PTR_T) ptr);
5025 #endif
5026 }
5027 \f
5028 /* Allocate forward reference to a yet unknown tag. */
5029
5030 static forward_t *
5031 allocate_forward (void)
5032 {
5033 forward_t *ptr;
5034 static forward_t initial_forward;
5035
5036 #ifndef MALLOC_CHECK
5037
5038 int unallocated = alloc_counts[(int) alloc_type_forward].unallocated;
5039 page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page;
5040
5041 if (unallocated == 0)
5042 {
5043 unallocated = PAGE_SIZE / sizeof (forward_t);
5044 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page ();
5045 alloc_counts[(int) alloc_type_forward].total_pages++;
5046 }
5047
5048 ptr = &cur_page->forward[--unallocated];
5049 alloc_counts[(int) alloc_type_forward].unallocated = unallocated;
5050
5051 #else
5052
5053 ptr = XNEW (forward_t);
5054
5055 #endif
5056
5057 alloc_counts[(int) alloc_type_forward].total_alloc++;
5058 *ptr = initial_forward;
5059 return ptr;
5060 }
5061 \f
5062 /* Allocate head of type hash list. */
5063
5064 static thead_t *
5065 allocate_thead (void)
5066 {
5067 thead_t *ptr;
5068 static thead_t initial_thead;
5069
5070 #ifndef MALLOC_CHECK
5071
5072 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5073 if (ptr != (thead_t *) NULL)
5074 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free;
5075 else
5076 {
5077 int unallocated = alloc_counts[(int) alloc_type_thead].unallocated;
5078 page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page;
5079
5080 if (unallocated == 0)
5081 {
5082 unallocated = PAGE_SIZE / sizeof (thead_t);
5083 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page ();
5084 alloc_counts[(int) alloc_type_thead].total_pages++;
5085 }
5086
5087 ptr = &cur_page->thead[--unallocated];
5088 alloc_counts[(int) alloc_type_thead].unallocated = unallocated;
5089 }
5090
5091 #else
5092
5093 ptr = XNEW (thead_t);
5094
5095 #endif
5096
5097 alloc_counts[(int) alloc_type_thead].total_alloc++;
5098 *ptr = initial_thead;
5099 return ptr;
5100 }
5101
5102 /* Free scoping information. */
5103
5104 static void
5105 free_thead (thead_t *ptr)
5106 {
5107 alloc_counts[(int) alloc_type_thead].total_free++;
5108
5109 #ifndef MALLOC_CHECK
5110 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5111 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr;
5112 #else
5113 free ((PTR_T) ptr);
5114 #endif
5115 }
5116 \f
5117 static lineno_list_t *
5118 allocate_lineno_list (void)
5119 {
5120 lineno_list_t *ptr;
5121 static lineno_list_t initial_lineno_list;
5122
5123 #ifndef MALLOC_CHECK
5124
5125 int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated;
5126 page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page;
5127
5128 if (unallocated == 0)
5129 {
5130 unallocated = PAGE_SIZE / sizeof (lineno_list_t);
5131 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page ();
5132 alloc_counts[(int) alloc_type_lineno].total_pages++;
5133 }
5134
5135 ptr = &cur_page->lineno[--unallocated];
5136 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated;
5137
5138 #else
5139
5140 ptr = XNEW (lineno_list_t);
5141
5142 #endif
5143
5144 alloc_counts[(int) alloc_type_lineno].total_alloc++;
5145 *ptr = initial_lineno_list;
5146 return ptr;
5147 }
5148
5149 void
5150 ecoff_set_gp_prolog_size (int sz)
5151 {
5152 if (cur_proc_ptr == 0)
5153 return;
5154
5155 cur_proc_ptr->pdr.gp_prologue = sz;
5156 if (cur_proc_ptr->pdr.gp_prologue != sz)
5157 {
5158 as_warn (_("GP prologue size exceeds field size, using 0 instead"));
5159 cur_proc_ptr->pdr.gp_prologue = 0;
5160 }
5161
5162 cur_proc_ptr->pdr.gp_used = 1;
5163 }
5164
5165 int
5166 ecoff_no_current_file (void)
5167 {
5168 return cur_file_ptr == (efdr_t *) NULL;
5169 }
5170
5171 void
5172 ecoff_generate_asm_lineno (void)
5173 {
5174 unsigned int lineno;
5175 const char *filename;
5176 lineno_list_t *list;
5177
5178 filename = as_where (&lineno);
5179
5180 if (current_stabs_filename == (char *) NULL
5181 || filename_cmp (current_stabs_filename, filename))
5182 add_file (filename, 0, 1);
5183
5184 list = allocate_lineno_list ();
5185
5186 list->next = (lineno_list_t *) NULL;
5187 list->file = cur_file_ptr;
5188 list->proc = cur_proc_ptr;
5189 list->frag = frag_now;
5190 list->paddr = frag_now_fix ();
5191 list->lineno = lineno;
5192
5193 /* We don't want to merge files which have line numbers. */
5194 cur_file_ptr->fdr.fMerge = 0;
5195
5196 /* A .loc directive will sometimes appear before a .ent directive,
5197 which means that cur_proc_ptr will be NULL here. Arrange to
5198 patch this up. */
5199 if (cur_proc_ptr == (proc_t *) NULL)
5200 {
5201 lineno_list_t **pl;
5202
5203 pl = &noproc_lineno;
5204 while (*pl != (lineno_list_t *) NULL)
5205 pl = &(*pl)->next;
5206 *pl = list;
5207 }
5208 else
5209 {
5210 last_lineno = list;
5211 *last_lineno_ptr = list;
5212 last_lineno_ptr = &list->next;
5213 }
5214 }
5215
5216 #else
5217
5218 void
5219 ecoff_generate_asm_lineno (void)
5220 {
5221 }
5222
5223 #endif /* ECOFF_DEBUGGING */
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