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[binutils-gdb.git] / gas / ecoff.c
blob093c1ed3198e654b76dfdbaceaf8d98bf0c48a15
1 /* ECOFF debugging support.
2 Copyright (C) 1993-2021 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
4 This file was put together by Ian Lance Taylor <ian@cygnus.com>. A
5 good deal of it comes directly from mips-tfile.c, by Michael
6 Meissner <meissner@osf.org>.
7
8 This file is part of GAS.
9
10 GAS is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3, or (at your option)
13 any later version.
14
15 GAS is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with GAS; see the file COPYING. If not, write to the Free
22 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23 02110-1301, USA. */
24
25 #include "as.h"
26
27 /* This file is compiled conditionally for those targets which use
28 ECOFF debugging information (e.g., MIPS ELF, Alpha ECOFF). */
29
30 #include "ecoff.h"
31
32 #ifdef ECOFF_DEBUGGING
33
34 #include "coff/internal.h"
35 #include "coff/symconst.h"
36 #include "aout/stab_gnu.h"
37 #include "filenames.h"
38 #include "safe-ctype.h"
39
40 /* Why isn't this in coff/sym.h? */
41 #define ST_RFDESCAPE 0xfff
42
43 /* This file constructs the information used by the ECOFF debugging
44 format. It just builds a large block of data.
45
46 We support both ECOFF style debugging and stabs debugging (the
47 stabs symbols are encapsulated in ECOFF symbols). This should let
48 us handle anything the compiler might throw at us. */
49
50 /* Here is a brief description of the MIPS ECOFF symbol table, by
51 Michael Meissner. The MIPS symbol table has the following pieces:
52
53 Symbolic Header
54 |
55 +-- Auxiliary Symbols
56 |
57 +-- Dense number table
58 |
59 +-- Optimizer Symbols
60 |
61 +-- External Strings
62 |
63 +-- External Symbols
64 |
65 +-- Relative file descriptors
66 |
67 +-- File table
68 |
69 +-- Procedure table
70 |
71 +-- Line number table
72 |
73 +-- Local Strings
74 |
75 +-- Local Symbols
76
77 The symbolic header points to each of the other tables, and also
78 contains the number of entries. It also contains a magic number
79 and MIPS compiler version number, such as 2.0.
80
81 The auxiliary table is a series of 32 bit integers, that are
82 referenced as needed from the local symbol table. Unlike standard
83 COFF, the aux. information does not follow the symbol that uses
84 it, but rather is a separate table. In theory, this would allow
85 the MIPS compilers to collapse duplicate aux. entries, but I've not
86 noticed this happening with the 1.31 compiler suite. The different
87 types of aux. entries are:
88
89 1) dnLow: Low bound on array dimension.
90
91 2) dnHigh: High bound on array dimension.
92
93 3) isym: Index to the local symbol which is the start of the
94 function for the end of function first aux. entry.
95
96 4) width: Width of structures and bitfields.
97
98 5) count: Count of ranges for variant part.
99
100 6) rndx: A relative index into the symbol table. The relative
101 index field has two parts: rfd which is a pointer into the
102 relative file index table or ST_RFDESCAPE which says the next
103 aux. entry is the file number, and index: which is the pointer
104 into the local symbol within a given file table. This is for
105 things like references to types defined in another file.
106
107 7) Type information: This is like the COFF type bits, except it
108 is 32 bits instead of 16; they still have room to add new
109 basic types; and they can handle more than 6 levels of array,
110 pointer, function, etc. Each type information field contains
111 the following structure members:
112
113 a) fBitfield: a bit that says this is a bitfield, and the
114 size in bits follows as the next aux. entry.
115
116 b) continued: a bit that says the next aux. entry is a
117 continuation of the current type information (in case
118 there are more than 6 levels of array/ptr/function).
119
120 c) bt: an integer containing the base type before adding
121 array, pointer, function, etc. qualifiers. The
122 current base types that I have documentation for are:
123
124 btNil -- undefined
125 btAdr -- address - integer same size as ptr
126 btChar -- character
127 btUChar -- unsigned character
128 btShort -- short
129 btUShort -- unsigned short
130 btInt -- int
131 btUInt -- unsigned int
132 btLong -- long
133 btULong -- unsigned long
134 btFloat -- float (real)
135 btDouble -- Double (real)
136 btStruct -- Structure (Record)
137 btUnion -- Union (variant)
138 btEnum -- Enumerated
139 btTypedef -- defined via a typedef isymRef
140 btRange -- subrange of int
141 btSet -- pascal sets
142 btComplex -- fortran complex
143 btDComplex -- fortran double complex
144 btIndirect -- forward or unnamed typedef
145 btFixedDec -- Fixed Decimal
146 btFloatDec -- Float Decimal
147 btString -- Varying Length Character String
148 btBit -- Aligned Bit String
149 btPicture -- Picture
150 btVoid -- Void (MIPS cc revision >= 2.00)
151
152 d) tq0 - tq5: type qualifier fields as needed. The
153 current type qualifier fields I have documentation for
154 are:
155
156 tqNil -- no more qualifiers
157 tqPtr -- pointer
158 tqProc -- procedure
159 tqArray -- array
160 tqFar -- 8086 far pointers
161 tqVol -- volatile
162
163 The dense number table is used in the front ends, and disappears by
164 the time the .o is created.
165
166 With the 1.31 compiler suite, the optimization symbols don't seem
167 to be used as far as I can tell.
168
169 The linker is the first entity that creates the relative file
170 descriptor table, and I believe it is used so that the individual
171 file table pointers don't have to be rewritten when the objects are
172 merged together into the program file.
173
174 Unlike COFF, the basic symbol & string tables are split into
175 external and local symbols/strings. The relocation information
176 only goes off of the external symbol table, and the debug
177 information only goes off of the internal symbol table. The
178 external symbols can have links to an appropriate file index and
179 symbol within the file to give it the appropriate type information.
180 Because of this, the external symbols are actually larger than the
181 internal symbols (to contain the link information), and contain the
182 local symbol structure as a member, though this member is not the
183 first member of the external symbol structure (!). I suspect this
184 split is to make strip easier to deal with.
185
186 Each file table has offsets for where the line numbers, local
187 strings, local symbols, and procedure table starts from within the
188 global tables, and the indices are reset to 0 for each of those
189 tables for the file.
190
191 The procedure table contains the binary equivalents of the .ent
192 (start of the function address), .frame (what register is the
193 virtual frame pointer, constant offset from the register to obtain
194 the VFP, and what register holds the return address), .mask/.fmask
195 (bitmask of saved registers, and where the first register is stored
196 relative to the VFP) assembler directives. It also contains the
197 low and high bounds of the line numbers if debugging is turned on.
198
199 The line number table is a compressed form of the normal COFF line
200 table. Each line number entry is either 1 or 3 bytes long, and
201 contains a signed delta from the previous line, and an unsigned
202 count of the number of instructions this statement takes.
203
204 The local symbol table contains the following fields:
205
206 1) iss: index to the local string table giving the name of the
207 symbol.
208
209 2) value: value of the symbol (address, register number, etc.).
210
211 3) st: symbol type. The current symbol types are:
212
213 stNil -- Nuthin' special
214 stGlobal -- external symbol
215 stStatic -- static
216 stParam -- procedure argument
217 stLocal -- local variable
218 stLabel -- label
219 stProc -- External Procedure
220 stBlock -- beginning of block
221 stEnd -- end (of anything)
222 stMember -- member (of anything)
223 stTypedef -- type definition
224 stFile -- file name
225 stRegReloc -- register relocation
226 stForward -- forwarding address
227 stStaticProc -- Static procedure
228 stConstant -- const
229
230 4) sc: storage class. The current storage classes are:
231
232 scText -- text symbol
233 scData -- initialized data symbol
234 scBss -- un-initialized data symbol
235 scRegister -- value of symbol is register number
236 scAbs -- value of symbol is absolute
237 scUndefined -- who knows?
238 scCdbLocal -- variable's value is IN se->va.??
239 scBits -- this is a bit field
240 scCdbSystem -- value is IN debugger's address space
241 scRegImage -- register value saved on stack
242 scInfo -- symbol contains debugger information
243 scUserStruct -- addr in struct user for current process
244 scSData -- load time only small data
245 scSBss -- load time only small common
246 scRData -- load time only read only data
247 scVar -- Var parameter (fortranpascal)
248 scCommon -- common variable
249 scSCommon -- small common
250 scVarRegister -- Var parameter in a register
251 scVariant -- Variant record
252 scSUndefined -- small undefined(external) data
253 scInit -- .init section symbol
254
255 5) index: pointer to a local symbol or aux. entry.
256
257 For the following program:
258
259 #include <stdio.h>
260
261 main(){
262 printf("Hello World!\n");
263 return 0;
264 }
265
266 Mips-tdump produces the following information:
267
268 Global file header:
269 magic number 0x162
270 # sections 2
271 timestamp 645311799, Wed Jun 13 17:16:39 1990
272 symbolic header offset 284
273 symbolic header size 96
274 optional header 56
275 flags 0x0
276
277 Symbolic header, magic number = 0x7009, vstamp = 1.31:
278
279 Info Offset Number Bytes
280 ==== ====== ====== =====
281
282 Line numbers 380 4 4 [13]
283 Dense numbers 0 0 0
284 Procedures Tables 384 1 52
285 Local Symbols 436 16 192
286 Optimization Symbols 0 0 0
287 Auxiliary Symbols 628 39 156
288 Local Strings 784 80 80
289 External Strings 864 144 144
290 File Tables 1008 2 144
291 Relative Files 0 0 0
292 External Symbols 1152 20 320
293
294 File #0, "hello2.c"
295
296 Name index = 1 Readin = No
297 Merge = No Endian = LITTLE
298 Debug level = G2 Language = C
299 Adr = 0x00000000
300
301 Info Start Number Size Offset
302 ==== ===== ====== ==== ======
303 Local strings 0 15 15 784
304 Local symbols 0 6 72 436
305 Line numbers 0 13 13 380
306 Optimization symbols 0 0 0 0
307 Procedures 0 1 52 384
308 Auxiliary symbols 0 14 56 628
309 Relative Files 0 0 0 0
310
311 There are 6 local symbols, starting at 436
312
313 Symbol# 0: "hello2.c"
314 End+1 symbol = 6
315 String index = 1
316 Storage class = Text Index = 6
317 Symbol type = File Value = 0
318
319 Symbol# 1: "main"
320 End+1 symbol = 5
321 Type = int
322 String index = 10
323 Storage class = Text Index = 12
324 Symbol type = Proc Value = 0
325
326 Symbol# 2: ""
327 End+1 symbol = 4
328 String index = 0
329 Storage class = Text Index = 4
330 Symbol type = Block Value = 8
331
332 Symbol# 3: ""
333 First symbol = 2
334 String index = 0
335 Storage class = Text Index = 2
336 Symbol type = End Value = 28
337
338 Symbol# 4: "main"
339 First symbol = 1
340 String index = 10
341 Storage class = Text Index = 1
342 Symbol type = End Value = 52
343
344 Symbol# 5: "hello2.c"
345 First symbol = 0
346 String index = 1
347 Storage class = Text Index = 0
348 Symbol type = End Value = 0
349
350 There are 14 auxiliary table entries, starting at 628.
351
352 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
353 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
354 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0]
355 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0]
356 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
357 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0]
358 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0]
359 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0]
360 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0]
361 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0]
362 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0]
363 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0]
364 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0]
365 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
366
367 There are 1 procedure descriptor entries, starting at 0.
368
369 Procedure descriptor 0:
370 Name index = 10 Name = "main"
371 .mask 0x80000000,-4 .fmask 0x00000000,0
372 .frame $29,24,$31
373 Opt. start = -1 Symbols start = 1
374 First line # = 3 Last line # = 6
375 Line Offset = 0 Address = 0x00000000
376
377 There are 4 bytes holding line numbers, starting at 380.
378 Line 3, delta 0, count 2
379 Line 4, delta 1, count 3
380 Line 5, delta 1, count 2
381 Line 6, delta 1, count 6
382
383 File #1, "/usr/include/stdio.h"
384
385 Name index = 1 Readin = No
386 Merge = Yes Endian = LITTLE
387 Debug level = G2 Language = C
388 Adr = 0x00000000
389
390 Info Start Number Size Offset
391 ==== ===== ====== ==== ======
392 Local strings 15 65 65 799
393 Local symbols 6 10 120 508
394 Line numbers 0 0 0 380
395 Optimization symbols 0 0 0 0
396 Procedures 1 0 0 436
397 Auxiliary symbols 14 25 100 684
398 Relative Files 0 0 0 0
399
400 There are 10 local symbols, starting at 442
401
402 Symbol# 0: "/usr/include/stdio.h"
403 End+1 symbol = 10
404 String index = 1
405 Storage class = Text Index = 10
406 Symbol type = File Value = 0
407
408 Symbol# 1: "_iobuf"
409 End+1 symbol = 9
410 String index = 22
411 Storage class = Info Index = 9
412 Symbol type = Block Value = 20
413
414 Symbol# 2: "_cnt"
415 Type = int
416 String index = 29
417 Storage class = Info Index = 4
418 Symbol type = Member Value = 0
419
420 Symbol# 3: "_ptr"
421 Type = ptr to char
422 String index = 34
423 Storage class = Info Index = 15
424 Symbol type = Member Value = 32
425
426 Symbol# 4: "_base"
427 Type = ptr to char
428 String index = 39
429 Storage class = Info Index = 16
430 Symbol type = Member Value = 64
431
432 Symbol# 5: "_bufsiz"
433 Type = int
434 String index = 45
435 Storage class = Info Index = 4
436 Symbol type = Member Value = 96
437
438 Symbol# 6: "_flag"
439 Type = short
440 String index = 53
441 Storage class = Info Index = 3
442 Symbol type = Member Value = 128
443
444 Symbol# 7: "_file"
445 Type = char
446 String index = 59
447 Storage class = Info Index = 2
448 Symbol type = Member Value = 144
449
450 Symbol# 8: ""
451 First symbol = 1
452 String index = 0
453 Storage class = Info Index = 1
454 Symbol type = End Value = 0
455
456 Symbol# 9: "/usr/include/stdio.h"
457 First symbol = 0
458 String index = 1
459 Storage class = Text Index = 0
460 Symbol type = End Value = 0
461
462 There are 25 auxiliary table entries, starting at 642.
463
464 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f]
465 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
466 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
467 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0]
468 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1]
469 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
470 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4]
471 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
472 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
473 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0]
474 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0]
475 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
476 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
477 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
478 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
479 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
480 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
481 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
482 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
483 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
484 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
485 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
486 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
487 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
488 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
489
490 There are 0 procedure descriptor entries, starting at 1.
491
492 There are 20 external symbols, starting at 1152
493
494 Symbol# 0: "_iob"
495 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 }
496 String index = 0 Ifd = 1
497 Storage class = Nil Index = 17
498 Symbol type = Global Value = 60
499
500 Symbol# 1: "fopen"
501 String index = 5 Ifd = 1
502 Storage class = Nil Index = 1048575
503 Symbol type = Proc Value = 0
504
505 Symbol# 2: "fdopen"
506 String index = 11 Ifd = 1
507 Storage class = Nil Index = 1048575
508 Symbol type = Proc Value = 0
509
510 Symbol# 3: "freopen"
511 String index = 18 Ifd = 1
512 Storage class = Nil Index = 1048575
513 Symbol type = Proc Value = 0
514
515 Symbol# 4: "popen"
516 String index = 26 Ifd = 1
517 Storage class = Nil Index = 1048575
518 Symbol type = Proc Value = 0
519
520 Symbol# 5: "tmpfile"
521 String index = 32 Ifd = 1
522 Storage class = Nil Index = 1048575
523 Symbol type = Proc Value = 0
524
525 Symbol# 6: "ftell"
526 String index = 40 Ifd = 1
527 Storage class = Nil Index = 1048575
528 Symbol type = Proc Value = 0
529
530 Symbol# 7: "rewind"
531 String index = 46 Ifd = 1
532 Storage class = Nil Index = 1048575
533 Symbol type = Proc Value = 0
534
535 Symbol# 8: "setbuf"
536 String index = 53 Ifd = 1
537 Storage class = Nil Index = 1048575
538 Symbol type = Proc Value = 0
539
540 Symbol# 9: "setbuffer"
541 String index = 60 Ifd = 1
542 Storage class = Nil Index = 1048575
543 Symbol type = Proc Value = 0
544
545 Symbol# 10: "setlinebuf"
546 String index = 70 Ifd = 1
547 Storage class = Nil Index = 1048575
548 Symbol type = Proc Value = 0
549
550 Symbol# 11: "fgets"
551 String index = 81 Ifd = 1
552 Storage class = Nil Index = 1048575
553 Symbol type = Proc Value = 0
554
555 Symbol# 12: "gets"
556 String index = 87 Ifd = 1
557 Storage class = Nil Index = 1048575
558 Symbol type = Proc Value = 0
559
560 Symbol# 13: "ctermid"
561 String index = 92 Ifd = 1
562 Storage class = Nil Index = 1048575
563 Symbol type = Proc Value = 0
564
565 Symbol# 14: "cuserid"
566 String index = 100 Ifd = 1
567 Storage class = Nil Index = 1048575
568 Symbol type = Proc Value = 0
569
570 Symbol# 15: "tempnam"
571 String index = 108 Ifd = 1
572 Storage class = Nil Index = 1048575
573 Symbol type = Proc Value = 0
574
575 Symbol# 16: "tmpnam"
576 String index = 116 Ifd = 1
577 Storage class = Nil Index = 1048575
578 Symbol type = Proc Value = 0
579
580 Symbol# 17: "sprintf"
581 String index = 123 Ifd = 1
582 Storage class = Nil Index = 1048575
583 Symbol type = Proc Value = 0
584
585 Symbol# 18: "main"
586 Type = int
587 String index = 131 Ifd = 0
588 Storage class = Text Index = 1
589 Symbol type = Proc Value = 0
590
591 Symbol# 19: "printf"
592 String index = 136 Ifd = 0
593 Storage class = Undefined Index = 1048575
594 Symbol type = Proc Value = 0
595
596 The following auxiliary table entries were unused:
597
598 #0 0 0x00000000 void
599 #2 8 0x00000008 char
600 #3 16 0x00000010 short
601 #4 24 0x00000018 int
602 #5 32 0x00000020 long
603 #6 40 0x00000028 float
604 #7 44 0x0000002c double
605 #8 12 0x0000000c unsigned char
606 #9 20 0x00000014 unsigned short
607 #10 28 0x0000001c unsigned int
608 #11 36 0x00000024 unsigned long
609 #14 0 0x00000000 void
610 #15 24 0x00000018 int
611 #19 32 0x00000020 long
612 #20 40 0x00000028 float
613 #21 44 0x0000002c double
614 #22 12 0x0000000c unsigned char
615 #23 20 0x00000014 unsigned short
616 #24 28 0x0000001c unsigned int
617 #25 36 0x00000024 unsigned long
618 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 }
619 */
620 \f
621 /* Redefinition of storage classes as an enumeration for better
622 debugging. */
623
624 typedef enum sc {
625 sc_Nil = scNil, /* no storage class */
626 sc_Text = scText, /* text symbol */
627 sc_Data = scData, /* initialized data symbol */
628 sc_Bss = scBss, /* un-initialized data symbol */
629 sc_Register = scRegister, /* value of symbol is register number */
630 sc_Abs = scAbs, /* value of symbol is absolute */
631 sc_Undefined = scUndefined, /* who knows? */
632 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */
633 sc_Bits = scBits, /* this is a bit field */
634 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */
635 sc_RegImage = scRegImage, /* register value saved on stack */
636 sc_Info = scInfo, /* symbol contains debugger information */
637 sc_UserStruct = scUserStruct, /* addr in struct user for current process */
638 sc_SData = scSData, /* load time only small data */
639 sc_SBss = scSBss, /* load time only small common */
640 sc_RData = scRData, /* load time only read only data */
641 sc_Var = scVar, /* Var parameter (fortran,pascal) */
642 sc_Common = scCommon, /* common variable */
643 sc_SCommon = scSCommon, /* small common */
644 sc_VarRegister = scVarRegister, /* Var parameter in a register */
645 sc_Variant = scVariant, /* Variant record */
646 sc_SUndefined = scSUndefined, /* small undefined(external) data */
647 sc_Init = scInit, /* .init section symbol */
648 sc_Max = scMax /* Max storage class+1 */
649 } sc_t;
650
651 /* Redefinition of symbol type. */
652
653 typedef enum st {
654 st_Nil = stNil, /* Nuthin' special */
655 st_Global = stGlobal, /* external symbol */
656 st_Static = stStatic, /* static */
657 st_Param = stParam, /* procedure argument */
658 st_Local = stLocal, /* local variable */
659 st_Label = stLabel, /* label */
660 st_Proc = stProc, /* " " Procedure */
661 st_Block = stBlock, /* beginning of block */
662 st_End = stEnd, /* end (of anything) */
663 st_Member = stMember, /* member (of anything - struct/union/enum */
664 st_Typedef = stTypedef, /* type definition */
665 st_File = stFile, /* file name */
666 st_RegReloc = stRegReloc, /* register relocation */
667 st_Forward = stForward, /* forwarding address */
668 st_StaticProc = stStaticProc, /* load time only static procs */
669 st_Constant = stConstant, /* const */
670 st_Str = stStr, /* string */
671 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */
672 st_Expr = stExpr, /* 2+2 vs. 4 */
673 st_Type = stType, /* post-coercion SER */
674 st_Max = stMax /* max type+1 */
675 } st_t;
676
677 /* Redefinition of type qualifiers. */
678
679 typedef enum tq {
680 tq_Nil = tqNil, /* bt is what you see */
681 tq_Ptr = tqPtr, /* pointer */
682 tq_Proc = tqProc, /* procedure */
683 tq_Array = tqArray, /* duh */
684 tq_Far = tqFar, /* longer addressing - 8086/8 land */
685 tq_Vol = tqVol, /* volatile */
686 tq_Max = tqMax /* Max type qualifier+1 */
687 } tq_t;
688
689 /* Redefinition of basic types. */
690
691 typedef enum bt {
692 bt_Nil = btNil, /* undefined */
693 bt_Adr = btAdr, /* address - integer same size as pointer */
694 bt_Char = btChar, /* character */
695 bt_UChar = btUChar, /* unsigned character */
696 bt_Short = btShort, /* short */
697 bt_UShort = btUShort, /* unsigned short */
698 bt_Int = btInt, /* int */
699 bt_UInt = btUInt, /* unsigned int */
700 bt_Long = btLong, /* long */
701 bt_ULong = btULong, /* unsigned long */
702 bt_Float = btFloat, /* float (real) */
703 bt_Double = btDouble, /* Double (real) */
704 bt_Struct = btStruct, /* Structure (Record) */
705 bt_Union = btUnion, /* Union (variant) */
706 bt_Enum = btEnum, /* Enumerated */
707 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */
708 bt_Range = btRange, /* subrange of int */
709 bt_Set = btSet, /* pascal sets */
710 bt_Complex = btComplex, /* fortran complex */
711 bt_DComplex = btDComplex, /* fortran double complex */
712 bt_Indirect = btIndirect, /* forward or unnamed typedef */
713 bt_FixedDec = btFixedDec, /* Fixed Decimal */
714 bt_FloatDec = btFloatDec, /* Float Decimal */
715 bt_String = btString, /* Varying Length Character String */
716 bt_Bit = btBit, /* Aligned Bit String */
717 bt_Picture = btPicture, /* Picture */
718 bt_Void = btVoid, /* Void */
719 bt_Max = btMax /* Max basic type+1 */
720 } bt_t;
721
722 #define N_TQ itqMax
723
724 /* States for whether to hash type or not. */
725 typedef enum hash_state {
726 hash_no = 0, /* Don't hash type */
727 hash_yes = 1, /* OK to hash type, or use previous hash */
728 hash_record = 2 /* OK to record hash, but don't use prev. */
729 } hash_state_t;
730
731 /* Types of different sized allocation requests. */
732 enum alloc_type {
733 alloc_type_none, /* dummy value */
734 alloc_type_scope, /* nested scopes linked list */
735 alloc_type_vlinks, /* glue linking pages in varray */
736 alloc_type_shash, /* string hash element */
737 alloc_type_thash, /* type hash element */
738 alloc_type_tag, /* struct/union/tag element */
739 alloc_type_forward, /* element to hold unknown tag */
740 alloc_type_thead, /* head of type hash list */
741 alloc_type_varray, /* general varray allocation */
742 alloc_type_lineno, /* line number list */
743 alloc_type_last /* last+1 element for array bounds */
744 };
745
746 /* Types of auxiliary type information. */
747 enum aux_type {
748 aux_tir, /* TIR type information */
749 aux_rndx, /* relative index into symbol table */
750 aux_dnLow, /* low dimension */
751 aux_dnHigh, /* high dimension */
752 aux_isym, /* symbol table index (end of proc) */
753 aux_iss, /* index into string space (not used) */
754 aux_width, /* width for non-default sized struc fields */
755 aux_count /* count of ranges for variant arm */
756 };
757 \f
758 /* Structures to provide n-number of virtual arrays, each of which can
759 grow linearly, and which are written in the object file as
760 sequential pages. On systems with a BSD malloc, the
761 MAX_CLUSTER_PAGES should be 1 less than a power of two, since
762 malloc adds it's overhead, and rounds up to the next power of 2.
763 Pages are linked together via a linked list.
764
765 If PAGE_SIZE is > 4096, the string length in the shash_t structure
766 can't be represented (assuming there are strings > 4096 bytes). */
767
768 /* FIXME: Yes, there can be such strings while emitting C++ class debug
769 info. Templates are the offender here, the test case in question
770 having a mangled class name of
771
772 t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\
773 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey
774
775 Repeat that a couple dozen times while listing the class members and
776 you've got strings over 4k. Hack around this for now by increasing
777 the page size. A proper solution would abandon this structure scheme
778 certainly for very large strings, and possibly entirely. */
779
780 #ifndef PAGE_SIZE
781 #define PAGE_SIZE (8*1024) /* size of varray pages */
782 #endif
783
784 #define PAGE_USIZE ((unsigned long) PAGE_SIZE)
785
786 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */
787 #define MAX_CLUSTER_PAGES 63
788 #endif
789
790 /* Linked list connecting separate page allocations. */
791 typedef struct vlinks {
792 struct vlinks *prev; /* previous set of pages */
793 struct vlinks *next; /* next set of pages */
794 union page *datum; /* start of page */
795 unsigned long start_index; /* starting index # of page */
796 } vlinks_t;
797
798 /* Virtual array header. */
799 typedef struct varray {
800 vlinks_t *first; /* first page link */
801 vlinks_t *last; /* last page link */
802 unsigned long num_allocated; /* # objects allocated */
803 unsigned short object_size; /* size in bytes of each object */
804 unsigned short objects_per_page; /* # objects that can fit on a page */
805 unsigned short objects_last_page; /* # objects allocated on last page */
806 } varray_t;
807
808 #ifndef MALLOC_CHECK
809 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type))
810 #else
811 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE)
812 #endif
813
814 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \
815 (vlinks_t *)0, /* first */ \
816 (vlinks_t *)0, /* last */ \
817 0, /* num_allocated */ \
818 sizeof (type), /* object_size */ \
819 OBJECTS_PER_PAGE (type), /* objects_per_page */ \
820 OBJECTS_PER_PAGE (type), /* objects_last_page */ \
821 }
822
823 /* Master type for indexes within the symbol table. */
824 typedef unsigned long symint_t;
825
826 /* Linked list support for nested scopes (file, block, structure, etc.). */
827 typedef struct scope {
828 struct scope *prev; /* previous scope level */
829 struct scope *free; /* free list pointer */
830 struct localsym *lsym; /* pointer to local symbol node */
831 st_t type; /* type of the node */
832 } scope_t;
833
834 /* For a local symbol we store a gas symbol as well as the debugging
835 information we generate. The gas symbol will be NULL if this is
836 only a debugging symbol. */
837 typedef struct localsym {
838 const char *name; /* symbol name */
839 symbolS *as_sym; /* symbol as seen by gas */
840 bfd_vma addend; /* addend to as_sym value */
841 struct efdr *file_ptr; /* file pointer */
842 struct ecoff_proc *proc_ptr; /* proc pointer */
843 struct localsym *begin_ptr; /* symbol at start of block */
844 struct ecoff_aux *index_ptr; /* index value to be filled in */
845 struct forward *forward_ref; /* forward references to this symbol */
846 long sym_index; /* final symbol index */
847 EXTR ecoff_sym; /* ECOFF debugging symbol */
848 } localsym_t;
849
850 /* For aux information we keep the type and the data. */
851 typedef struct ecoff_aux {
852 enum aux_type type; /* aux type */
853 AUXU data; /* aux data */
854 } aux_t;
855
856 /* For a procedure we store the gas symbol as well as the PDR
857 debugging information. */
858 typedef struct ecoff_proc {
859 localsym_t *sym; /* associated symbol */
860 PDR pdr; /* ECOFF debugging info */
861 } proc_t;
862
863 /* Number of proc_t structures allocated. */
864 static unsigned long proc_cnt;
865
866 /* Forward reference list for tags referenced, but not yet defined. */
867 typedef struct forward {
868 struct forward *next; /* next forward reference */
869 struct forward *free; /* free list pointer */
870 aux_t *ifd_ptr; /* pointer to store file index */
871 aux_t *index_ptr; /* pointer to store symbol index */
872 } forward_t;
873
874 /* Linked list support for tags. The first tag in the list is always
875 the current tag for that block. */
876 typedef struct tag {
877 struct tag *free; /* free list pointer */
878 struct shash *hash_ptr; /* pointer to the hash table head */
879 struct tag *same_name; /* tag with same name in outer scope */
880 struct tag *same_block; /* next tag defined in the same block. */
881 struct forward *forward_ref; /* list of forward references */
882 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
883 symint_t ifd; /* file # tag defined in */
884 localsym_t *sym; /* file's local symbols */
885 } tag_t;
886
887 /* Head of a block's linked list of tags. */
888 typedef struct thead {
889 struct thead *prev; /* previous block */
890 struct thead *free; /* free list pointer */
891 struct tag *first_tag; /* first tag in block defined */
892 } thead_t;
893
894 /* Union containing pointers to each the small structures which are freed up. */
895 typedef union small_free {
896 scope_t *f_scope; /* scope structure */
897 thead_t *f_thead; /* tag head structure */
898 tag_t *f_tag; /* tag element structure */
899 forward_t *f_forward; /* forward tag reference */
900 } small_free_t;
901
902 /* String hash table entry. */
903
904 typedef struct shash {
905 char *string; /* string we are hashing */
906 symint_t indx; /* index within string table */
907 EXTR *esym_ptr; /* global symbol pointer */
908 localsym_t *sym_ptr; /* local symbol pointer */
909 localsym_t *end_ptr; /* symbol pointer to end block */
910 tag_t *tag_ptr; /* tag pointer */
911 proc_t *proc_ptr; /* procedure descriptor pointer */
912 } shash_t;
913
914 /* Type hash table support. The size of the hash table must fit
915 within a page with the other extended file descriptor information.
916 Because unique types which are hashed are fewer in number than
917 strings, we use a smaller hash value. */
918
919 #define HASHBITS 30
920
921 #ifndef THASH_SIZE
922 #define THASH_SIZE 113
923 #endif
924
925 typedef struct thash {
926 struct thash *next; /* next hash value */
927 AUXU type; /* type we are hashing */
928 symint_t indx; /* index within string table */
929 } thash_t;
930
931 /* Extended file descriptor that contains all of the support necessary
932 to add things to each file separately. */
933 typedef struct efdr {
934 FDR fdr; /* File header to be written out */
935 FDR *orig_fdr; /* original file header */
936 char *name; /* filename */
937 int fake; /* whether this is faked .file */
938 symint_t void_type; /* aux. pointer to 'void' type */
939 symint_t int_type; /* aux. pointer to 'int' type */
940 scope_t *cur_scope; /* current nested scopes */
941 symint_t file_index; /* current file number */
942 int nested_scopes; /* # nested scopes */
943 varray_t strings; /* local strings */
944 varray_t symbols; /* local symbols */
945 varray_t procs; /* procedures */
946 varray_t aux_syms; /* auxiliary symbols */
947 struct efdr *next_file; /* next file descriptor */
948 /* string/type hash tables */
949 htab_t str_hash; /* string hash table */
950 thash_t *thash_head[THASH_SIZE];
951 } efdr_t;
952
953 /* Pre-initialized extended file structure. */
954 static const efdr_t init_file = {
955 { /* FDR structure */
956 0, /* adr: memory address of beginning of file */
957 0, /* rss: file name (of source, if known) */
958 0, /* issBase: file's string space */
959 0, /* cbSs: number of bytes in the ss */
960 0, /* isymBase: beginning of symbols */
961 0, /* csym: count file's of symbols */
962 0, /* ilineBase: file's line symbols */
963 0, /* cline: count of file's line symbols */
964 0, /* ioptBase: file's optimization entries */
965 0, /* copt: count of file's optimization entries */
966 0, /* ipdFirst: start of procedures for this file */
967 0, /* cpd: count of procedures for this file */
968 0, /* iauxBase: file's auxiliary entries */
969 0, /* caux: count of file's auxiliary entries */
970 0, /* rfdBase: index into the file indirect table */
971 0, /* crfd: count file indirect entries */
972 langC, /* lang: language for this file */
973 1, /* fMerge: whether this file can be merged */
974 0, /* fReadin: true if read in (not just created) */
975 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */
976 GLEVEL_2, /* glevel: level this file was compiled with */
977 0, /* reserved: reserved for future use */
978 0, /* cbLineOffset: byte offset from header for this file ln's */
979 0, /* cbLine: size of lines for this file */
980 },
981
982 (FDR *)0, /* orig_fdr: original file header pointer */
983 (char *)0, /* name: pointer to filename */
984 0, /* fake: whether this is a faked .file */
985 0, /* void_type: ptr to aux node for void type */
986 0, /* int_type: ptr to aux node for int type */
987 (scope_t *)0, /* cur_scope: current scope being processed */
988 0, /* file_index: current file # */
989 0, /* nested_scopes: # nested scopes */
990 INIT_VARRAY (char), /* strings: local string varray */
991 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */
992 INIT_VARRAY (proc_t), /* procs: procedure varray */
993 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */
994
995 (struct efdr *)0, /* next_file: next file structure */
996
997 (htab_t)0, /* str_hash: string hash table */
998 { 0 }, /* thash_head: type hash table */
999 };
1000
1001 static efdr_t *first_file; /* first file descriptor */
1002 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */
1003
1004 /* Line number information is kept in a list until the assembly is
1005 finished. */
1006 typedef struct lineno_list {
1007 struct lineno_list *next; /* next element in list */
1008 efdr_t *file; /* file this line is in */
1009 proc_t *proc; /* procedure this line is in */
1010 fragS *frag; /* fragment this line number is in */
1011 unsigned long paddr; /* offset within fragment */
1012 long lineno; /* actual line number */
1013 } lineno_list_t;
1014
1015 static lineno_list_t *first_lineno;
1016 static lineno_list_t *last_lineno;
1017 static lineno_list_t **last_lineno_ptr = &first_lineno;
1018
1019 /* Sometimes there will be some .loc statements before a .ent. We
1020 keep them in this list so that we can fill in the procedure pointer
1021 after we see the .ent. */
1022 static lineno_list_t *noproc_lineno;
1023
1024 /* Union of various things that are held in pages. */
1025 typedef union page {
1026 char byte [ PAGE_SIZE ];
1027 unsigned char ubyte [ PAGE_SIZE ];
1028 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ];
1029 FDR ofile [ PAGE_SIZE / sizeof (FDR) ];
1030 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ];
1031 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ];
1032 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ];
1033 DNR dense [ PAGE_SIZE / sizeof (DNR) ];
1034 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ];
1035 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ];
1036 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ];
1037 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ];
1038 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ];
1039 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ];
1040 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ];
1041 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ];
1042 } page_type;
1043
1044 /* Structure holding allocation information for small sized structures. */
1045 typedef struct alloc_info {
1046 char *alloc_name; /* name of this allocation type (must be first) */
1047 page_type *cur_page; /* current page being allocated from */
1048 small_free_t free_list; /* current free list if any */
1049 int unallocated; /* number of elements unallocated on page */
1050 int total_alloc; /* total number of allocations */
1051 int total_free; /* total number of frees */
1052 int total_pages; /* total number of pages allocated */
1053 } alloc_info_t;
1054
1055 /* Type information collected together. */
1056 typedef struct type_info {
1057 bt_t basic_type; /* basic type */
1058 int orig_type; /* original COFF-based type */
1059 int num_tq; /* # type qualifiers */
1060 int num_dims; /* # dimensions */
1061 int num_sizes; /* # sizes */
1062 int extra_sizes; /* # extra sizes not tied with dims */
1063 tag_t * tag_ptr; /* tag pointer */
1064 int bitfield; /* symbol is a bitfield */
1065 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/
1066 symint_t dimensions [N_TQ]; /* dimensions for each array */
1067 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of
1068 struct/union/enum + bitfield size */
1069 } type_info_t;
1070
1071 /* Pre-initialized type_info struct. */
1072 static const type_info_t type_info_init = {
1073 bt_Nil, /* basic type */
1074 T_NULL, /* original COFF-based type */
1075 0, /* # type qualifiers */
1076 0, /* # dimensions */
1077 0, /* # sizes */
1078 0, /* sizes not tied with dims */
1079 NULL, /* ptr to tag */
1080 0, /* bitfield */
1081 { /* type qualifiers */
1082 tq_Nil,
1083 tq_Nil,
1084 tq_Nil,
1085 tq_Nil,
1086 tq_Nil,
1087 tq_Nil,
1088 },
1089 { /* dimensions */
1090 0,
1091 0,
1092 0,
1093 0,
1094 0,
1095 0
1096 },
1097 { /* sizes */
1098 0,
1099 0,
1100 0,
1101 0,
1102 0,
1103 0,
1104 0,
1105 0,
1106 },
1107 };
1108
1109 /* Global hash table for the tags table and global table for file
1110 descriptors. */
1111
1112 static varray_t file_desc = INIT_VARRAY (efdr_t);
1113
1114 static htab_t tag_hash;
1115
1116 /* Static types for int and void. Also, remember the last function's
1117 type (which is set up when we encounter the declaration for the
1118 function, and used when the end block for the function is emitted. */
1119
1120 static type_info_t int_type_info;
1121 static type_info_t void_type_info;
1122 static type_info_t last_func_type_info;
1123 static symbolS *last_func_sym_value;
1124
1125 /* Convert COFF basic type to ECOFF basic type. The T_NULL type
1126 really should use bt_Void, but this causes the current ecoff GDB to
1127 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS
1128 2.0) doesn't understand it, even though the compiler generates it.
1129 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler
1130 suite, but for now go with what works.
1131
1132 It would make sense for the .type and .scl directives to use the
1133 ECOFF numbers directly, rather than using the COFF numbers and
1134 mapping them. Unfortunately, this is historically what mips-tfile
1135 expects, and changing gcc now would be a considerable pain (the
1136 native compiler generates debugging information internally, rather
1137 than via the assembler, so it will never use .type or .scl). */
1138
1139 static const bt_t map_coff_types[] = {
1140 bt_Nil, /* T_NULL */
1141 bt_Nil, /* T_ARG */
1142 bt_Char, /* T_CHAR */
1143 bt_Short, /* T_SHORT */
1144 bt_Int, /* T_INT */
1145 bt_Long, /* T_LONG */
1146 bt_Float, /* T_FLOAT */
1147 bt_Double, /* T_DOUBLE */
1148 bt_Struct, /* T_STRUCT */
1149 bt_Union, /* T_UNION */
1150 bt_Enum, /* T_ENUM */
1151 bt_Enum, /* T_MOE */
1152 bt_UChar, /* T_UCHAR */
1153 bt_UShort, /* T_USHORT */
1154 bt_UInt, /* T_UINT */
1155 bt_ULong /* T_ULONG */
1156 };
1157
1158 /* Convert COFF storage class to ECOFF storage class. */
1159 static const sc_t map_coff_storage[] = {
1160 sc_Nil, /* 0: C_NULL */
1161 sc_Abs, /* 1: C_AUTO auto var */
1162 sc_Undefined, /* 2: C_EXT external */
1163 sc_Data, /* 3: C_STAT static */
1164 sc_Register, /* 4: C_REG register */
1165 sc_Undefined, /* 5: C_EXTDEF ??? */
1166 sc_Text, /* 6: C_LABEL label */
1167 sc_Text, /* 7: C_ULABEL user label */
1168 sc_Info, /* 8: C_MOS member of struct */
1169 sc_Abs, /* 9: C_ARG argument */
1170 sc_Info, /* 10: C_STRTAG struct tag */
1171 sc_Info, /* 11: C_MOU member of union */
1172 sc_Info, /* 12: C_UNTAG union tag */
1173 sc_Info, /* 13: C_TPDEF typedef */
1174 sc_Data, /* 14: C_USTATIC ??? */
1175 sc_Info, /* 15: C_ENTAG enum tag */
1176 sc_Info, /* 16: C_MOE member of enum */
1177 sc_Register, /* 17: C_REGPARM register parameter */
1178 sc_Bits, /* 18; C_FIELD bitfield */
1179 sc_Nil, /* 19 */
1180 sc_Nil, /* 20 */
1181 sc_Nil, /* 21 */
1182 sc_Nil, /* 22 */
1183 sc_Nil, /* 23 */
1184 sc_Nil, /* 24 */
1185 sc_Nil, /* 25 */
1186 sc_Nil, /* 26 */
1187 sc_Nil, /* 27 */
1188 sc_Nil, /* 28 */
1189 sc_Nil, /* 29 */
1190 sc_Nil, /* 30 */
1191 sc_Nil, /* 31 */
1192 sc_Nil, /* 32 */
1193 sc_Nil, /* 33 */
1194 sc_Nil, /* 34 */
1195 sc_Nil, /* 35 */
1196 sc_Nil, /* 36 */
1197 sc_Nil, /* 37 */
1198 sc_Nil, /* 38 */
1199 sc_Nil, /* 39 */
1200 sc_Nil, /* 40 */
1201 sc_Nil, /* 41 */
1202 sc_Nil, /* 42 */
1203 sc_Nil, /* 43 */
1204 sc_Nil, /* 44 */
1205 sc_Nil, /* 45 */
1206 sc_Nil, /* 46 */
1207 sc_Nil, /* 47 */
1208 sc_Nil, /* 48 */
1209 sc_Nil, /* 49 */
1210 sc_Nil, /* 50 */
1211 sc_Nil, /* 51 */
1212 sc_Nil, /* 52 */
1213 sc_Nil, /* 53 */
1214 sc_Nil, /* 54 */
1215 sc_Nil, /* 55 */
1216 sc_Nil, /* 56 */
1217 sc_Nil, /* 57 */
1218 sc_Nil, /* 58 */
1219 sc_Nil, /* 59 */
1220 sc_Nil, /* 60 */
1221 sc_Nil, /* 61 */
1222 sc_Nil, /* 62 */
1223 sc_Nil, /* 63 */
1224 sc_Nil, /* 64 */
1225 sc_Nil, /* 65 */
1226 sc_Nil, /* 66 */
1227 sc_Nil, /* 67 */
1228 sc_Nil, /* 68 */
1229 sc_Nil, /* 69 */
1230 sc_Nil, /* 70 */
1231 sc_Nil, /* 71 */
1232 sc_Nil, /* 72 */
1233 sc_Nil, /* 73 */
1234 sc_Nil, /* 74 */
1235 sc_Nil, /* 75 */
1236 sc_Nil, /* 76 */
1237 sc_Nil, /* 77 */
1238 sc_Nil, /* 78 */
1239 sc_Nil, /* 79 */
1240 sc_Nil, /* 80 */
1241 sc_Nil, /* 81 */
1242 sc_Nil, /* 82 */
1243 sc_Nil, /* 83 */
1244 sc_Nil, /* 84 */
1245 sc_Nil, /* 85 */
1246 sc_Nil, /* 86 */
1247 sc_Nil, /* 87 */
1248 sc_Nil, /* 88 */
1249 sc_Nil, /* 89 */
1250 sc_Nil, /* 90 */
1251 sc_Nil, /* 91 */
1252 sc_Nil, /* 92 */
1253 sc_Nil, /* 93 */
1254 sc_Nil, /* 94 */
1255 sc_Nil, /* 95 */
1256 sc_Nil, /* 96 */
1257 sc_Nil, /* 97 */
1258 sc_Nil, /* 98 */
1259 sc_Nil, /* 99 */
1260 sc_Text, /* 100: C_BLOCK block start/end */
1261 sc_Text, /* 101: C_FCN function start/end */
1262 sc_Info, /* 102: C_EOS end of struct/union/enum */
1263 sc_Nil, /* 103: C_FILE file start */
1264 sc_Nil, /* 104: C_LINE line number */
1265 sc_Nil, /* 105: C_ALIAS combined type info */
1266 sc_Nil, /* 106: C_HIDDEN ??? */
1267 };
1268
1269 /* Convert COFF storage class to ECOFF symbol type. */
1270 static const st_t map_coff_sym_type[] = {
1271 st_Nil, /* 0: C_NULL */
1272 st_Local, /* 1: C_AUTO auto var */
1273 st_Global, /* 2: C_EXT external */
1274 st_Static, /* 3: C_STAT static */
1275 st_Local, /* 4: C_REG register */
1276 st_Global, /* 5: C_EXTDEF ??? */
1277 st_Label, /* 6: C_LABEL label */
1278 st_Label, /* 7: C_ULABEL user label */
1279 st_Member, /* 8: C_MOS member of struct */
1280 st_Param, /* 9: C_ARG argument */
1281 st_Block, /* 10: C_STRTAG struct tag */
1282 st_Member, /* 11: C_MOU member of union */
1283 st_Block, /* 12: C_UNTAG union tag */
1284 st_Typedef, /* 13: C_TPDEF typedef */
1285 st_Static, /* 14: C_USTATIC ??? */
1286 st_Block, /* 15: C_ENTAG enum tag */
1287 st_Member, /* 16: C_MOE member of enum */
1288 st_Param, /* 17: C_REGPARM register parameter */
1289 st_Member, /* 18; C_FIELD bitfield */
1290 st_Nil, /* 19 */
1291 st_Nil, /* 20 */
1292 st_Nil, /* 21 */
1293 st_Nil, /* 22 */
1294 st_Nil, /* 23 */
1295 st_Nil, /* 24 */
1296 st_Nil, /* 25 */
1297 st_Nil, /* 26 */
1298 st_Nil, /* 27 */
1299 st_Nil, /* 28 */
1300 st_Nil, /* 29 */
1301 st_Nil, /* 30 */
1302 st_Nil, /* 31 */
1303 st_Nil, /* 32 */
1304 st_Nil, /* 33 */
1305 st_Nil, /* 34 */
1306 st_Nil, /* 35 */
1307 st_Nil, /* 36 */
1308 st_Nil, /* 37 */
1309 st_Nil, /* 38 */
1310 st_Nil, /* 39 */
1311 st_Nil, /* 40 */
1312 st_Nil, /* 41 */
1313 st_Nil, /* 42 */
1314 st_Nil, /* 43 */
1315 st_Nil, /* 44 */
1316 st_Nil, /* 45 */
1317 st_Nil, /* 46 */
1318 st_Nil, /* 47 */
1319 st_Nil, /* 48 */
1320 st_Nil, /* 49 */
1321 st_Nil, /* 50 */
1322 st_Nil, /* 51 */
1323 st_Nil, /* 52 */
1324 st_Nil, /* 53 */
1325 st_Nil, /* 54 */
1326 st_Nil, /* 55 */
1327 st_Nil, /* 56 */
1328 st_Nil, /* 57 */
1329 st_Nil, /* 58 */
1330 st_Nil, /* 59 */
1331 st_Nil, /* 60 */
1332 st_Nil, /* 61 */
1333 st_Nil, /* 62 */
1334 st_Nil, /* 63 */
1335 st_Nil, /* 64 */
1336 st_Nil, /* 65 */
1337 st_Nil, /* 66 */
1338 st_Nil, /* 67 */
1339 st_Nil, /* 68 */
1340 st_Nil, /* 69 */
1341 st_Nil, /* 70 */
1342 st_Nil, /* 71 */
1343 st_Nil, /* 72 */
1344 st_Nil, /* 73 */
1345 st_Nil, /* 74 */
1346 st_Nil, /* 75 */
1347 st_Nil, /* 76 */
1348 st_Nil, /* 77 */
1349 st_Nil, /* 78 */
1350 st_Nil, /* 79 */
1351 st_Nil, /* 80 */
1352 st_Nil, /* 81 */
1353 st_Nil, /* 82 */
1354 st_Nil, /* 83 */
1355 st_Nil, /* 84 */
1356 st_Nil, /* 85 */
1357 st_Nil, /* 86 */
1358 st_Nil, /* 87 */
1359 st_Nil, /* 88 */
1360 st_Nil, /* 89 */
1361 st_Nil, /* 90 */
1362 st_Nil, /* 91 */
1363 st_Nil, /* 92 */
1364 st_Nil, /* 93 */
1365 st_Nil, /* 94 */
1366 st_Nil, /* 95 */
1367 st_Nil, /* 96 */
1368 st_Nil, /* 97 */
1369 st_Nil, /* 98 */
1370 st_Nil, /* 99 */
1371 st_Block, /* 100: C_BLOCK block start/end */
1372 st_Proc, /* 101: C_FCN function start/end */
1373 st_End, /* 102: C_EOS end of struct/union/enum */
1374 st_File, /* 103: C_FILE file start */
1375 st_Nil, /* 104: C_LINE line number */
1376 st_Nil, /* 105: C_ALIAS combined type info */
1377 st_Nil, /* 106: C_HIDDEN ??? */
1378 };
1379
1380 /* Keep track of different sized allocation requests. */
1381 static alloc_info_t alloc_counts[(int) alloc_type_last];
1382 \f
1383 /* Record whether we have seen any debugging information. */
1384 int ecoff_debugging_seen = 0;
1385
1386 /* Various statics. */
1387 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */
1388 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */
1389 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */
1390 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */
1391 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */
1392 #ifdef ECOFF_DEBUG
1393 static int debug = 0; /* trace functions */
1394 #endif
1395 static int stabs_seen = 0; /* != 0 if stabs have been seen */
1396
1397 static int current_file_idx;
1398 static const char *current_stabs_filename;
1399
1400 /* Pseudo symbol to use when putting stabs into the symbol table. */
1401 #ifndef STABS_SYMBOL
1402 #define STABS_SYMBOL "@stabs"
1403 #endif
1404
1405 static char stabs_symbol[] = STABS_SYMBOL;
1406 \f
1407 /* Prototypes for functions defined in this file. */
1408
1409 static void add_varray_page (varray_t *vp);
1410 static symint_t add_string (varray_t *vp,
1411 htab_t hash_tbl,
1412 const char *str,
1413 shash_t **ret_hash);
1414 static localsym_t *add_ecoff_symbol (const char *str, st_t type,
1415 sc_t storage, symbolS *sym,
1416 bfd_vma addend, symint_t value,
1417 symint_t indx);
1418 static symint_t add_aux_sym_symint (symint_t aux_word);
1419 static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index);
1420 static symint_t add_aux_sym_tir (type_info_t *t,
1421 hash_state_t state,
1422 thash_t **hash_tbl);
1423 static tag_t *get_tag (const char *tag, localsym_t *sym, bt_t basic_type);
1424 static void add_unknown_tag (tag_t *ptag);
1425 static void add_procedure (char *func, int aent);
1426 static void add_file (const char *file_name, int indx, int fake);
1427 #ifdef ECOFF_DEBUG
1428 static char *sc_to_string (sc_t storage_class);
1429 static char *st_to_string (st_t symbol_type);
1430 #endif
1431 static void mark_stabs (int);
1432 static char *ecoff_add_bytes (char **buf, char **bufend,
1433 char *bufptr, unsigned long need);
1434 static unsigned long ecoff_padding_adjust
1435 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1436 unsigned long offset, char **bufptrptr);
1437 static unsigned long ecoff_build_lineno
1438 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1439 unsigned long offset, long *linecntptr);
1440 static unsigned long ecoff_build_symbols
1441 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1442 unsigned long offset);
1443 static unsigned long ecoff_build_procs
1444 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1445 unsigned long offset);
1446 static unsigned long ecoff_build_aux
1447 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1448 unsigned long offset);
1449 static unsigned long ecoff_build_strings (char **buf, char **bufend,
1450 unsigned long offset,
1451 varray_t *vp);
1452 static unsigned long ecoff_build_ss
1453 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1454 unsigned long offset);
1455 static unsigned long ecoff_build_fdr
1456 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1457 unsigned long offset);
1458 static void ecoff_setup_ext (void);
1459 static page_type *allocate_cluster (unsigned long npages);
1460 static page_type *allocate_page (void);
1461 static scope_t *allocate_scope (void);
1462 static void free_scope (scope_t *ptr);
1463 static vlinks_t *allocate_vlinks (void);
1464 static shash_t *allocate_shash (void);
1465 static thash_t *allocate_thash (void);
1466 static tag_t *allocate_tag (void);
1467 static void free_tag (tag_t *ptr);
1468 static forward_t *allocate_forward (void);
1469 static thead_t *allocate_thead (void);
1470 static void free_thead (thead_t *ptr);
1471 static lineno_list_t *allocate_lineno_list (void);
1472 \f
1473 /* This function should be called when the assembler starts up. */
1474
1475 void
1476 ecoff_read_begin_hook (void)
1477 {
1478 tag_hash = str_htab_create ();
1479 top_tag_head = allocate_thead ();
1480 top_tag_head->first_tag = (tag_t *) NULL;
1481 top_tag_head->free = (thead_t *) NULL;
1482 top_tag_head->prev = cur_tag_head;
1483 cur_tag_head = top_tag_head;
1484 }
1485
1486 /* This function should be called when a symbol is created. */
1487
1488 void
1489 ecoff_symbol_new_hook (symbolS *symbolP)
1490 {
1491 OBJ_SYMFIELD_TYPE *obj;
1492
1493 /* Make sure that we have a file pointer, but only if we have seen a
1494 file. If we haven't seen a file, then this is a probably special
1495 symbol created by md_begin which may required special handling at
1496 some point. Creating a dummy file with a dummy name is certainly
1497 wrong. */
1498 if (cur_file_ptr == (efdr_t *) NULL
1499 && seen_at_least_1_file ())
1500 add_file ((const char *) NULL, 0, 1);
1501 obj = symbol_get_obj (symbolP);
1502 obj->ecoff_file = cur_file_ptr;
1503 obj->ecoff_symbol = NULL;
1504 obj->ecoff_extern_size = 0;
1505 }
1506
1507 void
1508 ecoff_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP)
1509 {
1510 OBJ_SYMFIELD_TYPE *n, *o;
1511
1512 n = symbol_get_obj (newsymP);
1513 o = symbol_get_obj (orgsymP);
1514 memcpy (n, o, sizeof *n);
1515 }
1516 \f
1517 /* Add a page to a varray object. */
1518
1519 static void
1520 add_varray_page (varray_t *vp /* varray to add page to */)
1521 {
1522 vlinks_t *new_links = allocate_vlinks ();
1523
1524 #ifdef MALLOC_CHECK
1525 if (vp->object_size > 1)
1526 new_links->datum = (page_type *) xcalloc (1, vp->object_size);
1527 else
1528 #endif
1529 new_links->datum = allocate_page ();
1530
1531 alloc_counts[(int) alloc_type_varray].total_alloc++;
1532 alloc_counts[(int) alloc_type_varray].total_pages++;
1533
1534 new_links->start_index = vp->num_allocated;
1535 vp->objects_last_page = 0;
1536
1537 if (vp->first == (vlinks_t *) NULL) /* first allocation? */
1538 vp->first = vp->last = new_links;
1539 else
1540 { /* 2nd or greater allocation */
1541 new_links->prev = vp->last;
1542 vp->last->next = new_links;
1543 vp->last = new_links;
1544 }
1545 }
1546 \f
1547 /* Add a string (and null pad) to one of the string tables. */
1548
1549 static symint_t
1550 add_string (varray_t *vp, /* string obstack */
1551 htab_t hash_tbl, /* ptr to hash table */
1552 const char *str, /* string */
1553 shash_t **ret_hash /* return hash pointer */)
1554 {
1555 unsigned long len = strlen (str);
1556 shash_t *hash_ptr;
1557
1558 if (len >= PAGE_USIZE)
1559 as_fatal (_("string too big (%lu bytes)"), len);
1560
1561 hash_ptr = (shash_t *) str_hash_find (hash_tbl, str);
1562 if (hash_ptr == (shash_t *) NULL)
1563 {
1564 if (vp->objects_last_page + len >= PAGE_USIZE)
1565 {
1566 vp->num_allocated =
1567 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE;
1568 add_varray_page (vp);
1569 }
1570
1571 hash_ptr = allocate_shash ();
1572 hash_ptr->indx = vp->num_allocated;
1573
1574 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page];
1575
1576 vp->objects_last_page += len + 1;
1577 vp->num_allocated += len + 1;
1578
1579 strcpy (hash_ptr->string, str);
1580
1581 if (str_hash_insert (hash_tbl, str, hash_ptr, 0) != NULL)
1582 as_fatal (_("duplicate %s"), str);
1583 }
1584
1585 if (ret_hash != (shash_t **) NULL)
1586 *ret_hash = hash_ptr;
1587
1588 return hash_ptr->indx;
1589 }
1590 \f
1591 /* Add debugging information for a symbol. */
1592
1593 static localsym_t *
1594 add_ecoff_symbol (const char *str, /* symbol name */
1595 st_t type, /* symbol type */
1596 sc_t storage, /* storage class */
1597 symbolS *sym_value, /* associated symbol. */
1598 bfd_vma addend, /* addend to sym_value. */
1599 symint_t value, /* value of symbol */
1600 symint_t indx /* index to local/aux. syms */)
1601 {
1602 localsym_t *psym;
1603 scope_t *pscope;
1604 thead_t *ptag_head;
1605 tag_t *ptag;
1606 tag_t *ptag_next;
1607 varray_t *vp;
1608 int scope_delta = 0;
1609 shash_t *hash_ptr = (shash_t *) NULL;
1610
1611 if (cur_file_ptr == (efdr_t *) NULL)
1612 as_fatal (_("no current file pointer"));
1613
1614 vp = &cur_file_ptr->symbols;
1615
1616 if (vp->objects_last_page == vp->objects_per_page)
1617 add_varray_page (vp);
1618
1619 psym = &vp->last->datum->sym[vp->objects_last_page++];
1620
1621 if (str == (const char *) NULL && sym_value != (symbolS *) NULL)
1622 psym->name = S_GET_NAME (sym_value);
1623 else
1624 psym->name = str;
1625 psym->as_sym = sym_value;
1626 if (sym_value != (symbolS *) NULL)
1627 symbol_get_obj (sym_value)->ecoff_symbol = psym;
1628 psym->addend = addend;
1629 psym->file_ptr = cur_file_ptr;
1630 psym->proc_ptr = cur_proc_ptr;
1631 psym->begin_ptr = (localsym_t *) NULL;
1632 psym->index_ptr = (aux_t *) NULL;
1633 psym->forward_ref = (forward_t *) NULL;
1634 psym->sym_index = -1;
1635 memset (&psym->ecoff_sym, 0, sizeof (EXTR));
1636 psym->ecoff_sym.asym.value = value;
1637 psym->ecoff_sym.asym.st = (unsigned) type;
1638 psym->ecoff_sym.asym.sc = (unsigned) storage;
1639 psym->ecoff_sym.asym.index = indx;
1640
1641 /* If there is an associated symbol, we wait until the end of the
1642 assembly before deciding where to put the name (it may be just an
1643 external symbol). Otherwise, this is just a debugging symbol and
1644 the name should go with the current file. */
1645 if (sym_value == (symbolS *) NULL)
1646 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL)
1647 ? 0
1648 : add_string (&cur_file_ptr->strings,
1649 cur_file_ptr->str_hash,
1650 str,
1651 &hash_ptr));
1652
1653 ++vp->num_allocated;
1654
1655 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym))
1656 return psym;
1657
1658 /* Save the symbol within the hash table if this is a static
1659 item, and it has a name. */
1660 if (hash_ptr != (shash_t *) NULL
1661 && (type == st_Global || type == st_Static || type == st_Label
1662 || type == st_Proc || type == st_StaticProc))
1663 hash_ptr->sym_ptr = psym;
1664
1665 /* push or pop a scope if appropriate. */
1666 switch (type)
1667 {
1668 default:
1669 break;
1670
1671 case st_File: /* beginning of file */
1672 case st_Proc: /* procedure */
1673 case st_StaticProc: /* static procedure */
1674 case st_Block: /* begin scope */
1675 pscope = allocate_scope ();
1676 pscope->prev = cur_file_ptr->cur_scope;
1677 pscope->lsym = psym;
1678 pscope->type = type;
1679 cur_file_ptr->cur_scope = pscope;
1680
1681 if (type != st_File)
1682 scope_delta = 1;
1683
1684 /* For every block type except file, struct, union, or
1685 enumeration blocks, push a level on the tag stack. We omit
1686 file types, so that tags can span file boundaries. */
1687 if (type != st_File && storage != sc_Info)
1688 {
1689 ptag_head = allocate_thead ();
1690 ptag_head->first_tag = 0;
1691 ptag_head->prev = cur_tag_head;
1692 cur_tag_head = ptag_head;
1693 }
1694 break;
1695
1696 case st_End:
1697 pscope = cur_file_ptr->cur_scope;
1698 if (pscope == (scope_t *) NULL)
1699 as_fatal (_("too many st_End's"));
1700 else
1701 {
1702 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st;
1703
1704 psym->begin_ptr = pscope->lsym;
1705
1706 if (begin_type != st_File)
1707 scope_delta = -1;
1708
1709 /* Except for file, structure, union, or enumeration end
1710 blocks remove all tags created within this scope. */
1711 if (begin_type != st_File && storage != sc_Info)
1712 {
1713 ptag_head = cur_tag_head;
1714 cur_tag_head = ptag_head->prev;
1715
1716 for (ptag = ptag_head->first_tag;
1717 ptag != (tag_t *) NULL;
1718 ptag = ptag_next)
1719 {
1720 if (ptag->forward_ref != (forward_t *) NULL)
1721 add_unknown_tag (ptag);
1722
1723 ptag_next = ptag->same_block;
1724 ptag->hash_ptr->tag_ptr = ptag->same_name;
1725 free_tag (ptag);
1726 }
1727
1728 free_thead (ptag_head);
1729 }
1730
1731 cur_file_ptr->cur_scope = pscope->prev;
1732
1733 /* block begin gets next sym #. This is set when we know
1734 the symbol index value. */
1735
1736 /* Functions push two or more aux words as follows:
1737 1st word: index+1 of the end symbol (filled in later).
1738 2nd word: type of the function (plus any aux words needed).
1739 Also, tie the external pointer back to the function begin symbol. */
1740 if (begin_type != st_File && begin_type != st_Block)
1741 {
1742 symint_t ty;
1743 varray_t *svp = &cur_file_ptr->aux_syms;
1744
1745 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0);
1746 pscope->lsym->index_ptr =
1747 &svp->last->datum->aux[svp->objects_last_page - 1];
1748 ty = add_aux_sym_tir (&last_func_type_info,
1749 hash_no,
1750 &cur_file_ptr->thash_head[0]);
1751 (void) ty;
1752 /* This seems to be unnecessary. I'm not even sure what it is
1753 * intended to do. It's from mips-tfile.
1754 * if (last_func_sym_value != (symbolS *) NULL)
1755 * {
1756 * last_func_sym_value->ifd = cur_file_ptr->file_index;
1757 * last_func_sym_value->index = ty;
1758 * }
1759 */
1760 }
1761
1762 free_scope (pscope);
1763 }
1764 }
1765
1766 cur_file_ptr->nested_scopes += scope_delta;
1767
1768 #ifdef ECOFF_DEBUG
1769 if (debug && type != st_File
1770 && (debug > 2 || type == st_Block || type == st_End
1771 || type == st_Proc || type == st_StaticProc))
1772 {
1773 char *sc_str = sc_to_string (storage);
1774 char *st_str = st_to_string (type);
1775 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0);
1776
1777 fprintf (stderr,
1778 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s",
1779 value, depth, sc_str);
1780
1781 if (str_start && str_end_p1 - str_start > 0)
1782 fprintf (stderr, " st= %-11s name= %.*s\n",
1783 st_str, str_end_p1 - str_start, str_start);
1784 else
1785 {
1786 unsigned long len = strlen (st_str);
1787 fprintf (stderr, " st= %.*s\n", len - 1, st_str);
1788 }
1789 }
1790 #endif
1791
1792 return psym;
1793 }
1794 \f
1795 /* Add an auxiliary symbol (passing a symint). This is actually used
1796 for integral aux types, not just symints. */
1797
1798 static symint_t
1799 add_aux_sym_symint (symint_t aux_word /* auxiliary information word */)
1800 {
1801 varray_t *vp;
1802 aux_t *aux_ptr;
1803
1804 if (cur_file_ptr == (efdr_t *) NULL)
1805 as_fatal (_("no current file pointer"));
1806
1807 vp = &cur_file_ptr->aux_syms;
1808
1809 if (vp->objects_last_page == vp->objects_per_page)
1810 add_varray_page (vp);
1811
1812 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1813 aux_ptr->type = aux_isym;
1814 aux_ptr->data.isym = aux_word;
1815
1816 return vp->num_allocated++;
1817 }
1818
1819 /* Add an auxiliary symbol (passing a file/symbol index combo). */
1820
1821 static symint_t
1822 add_aux_sym_rndx (int file_index, symint_t sym_index)
1823 {
1824 varray_t *vp;
1825 aux_t *aux_ptr;
1826
1827 if (cur_file_ptr == (efdr_t *) NULL)
1828 as_fatal (_("no current file pointer"));
1829
1830 vp = &cur_file_ptr->aux_syms;
1831
1832 if (vp->objects_last_page == vp->objects_per_page)
1833 add_varray_page (vp);
1834
1835 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1836 aux_ptr->type = aux_rndx;
1837 aux_ptr->data.rndx.rfd = file_index;
1838 aux_ptr->data.rndx.index = sym_index;
1839
1840 return vp->num_allocated++;
1841 }
1842 \f
1843 /* Add an auxiliary symbol (passing the basic type and possibly
1844 type qualifiers). */
1845
1846 static symint_t
1847 add_aux_sym_tir (type_info_t *t, /* current type information */
1848 hash_state_t state, /* whether to hash type or not */
1849 thash_t **hash_tbl /* pointer to hash table to use */)
1850 {
1851 varray_t *vp;
1852 aux_t *aux_ptr;
1853 static AUXU init_aux;
1854 symint_t ret;
1855 int i;
1856 AUXU aux;
1857
1858 if (cur_file_ptr == (efdr_t *) NULL)
1859 as_fatal (_("no current file pointer"));
1860
1861 vp = &cur_file_ptr->aux_syms;
1862
1863 aux = init_aux;
1864 aux.ti.bt = (int) t->basic_type;
1865 aux.ti.continued = 0;
1866 aux.ti.fBitfield = t->bitfield;
1867
1868 aux.ti.tq0 = (int) t->type_qualifiers[0];
1869 aux.ti.tq1 = (int) t->type_qualifiers[1];
1870 aux.ti.tq2 = (int) t->type_qualifiers[2];
1871 aux.ti.tq3 = (int) t->type_qualifiers[3];
1872 aux.ti.tq4 = (int) t->type_qualifiers[4];
1873 aux.ti.tq5 = (int) t->type_qualifiers[5];
1874
1875 /* For anything that adds additional information, we must not hash,
1876 so check here, and reset our state. */
1877
1878 if (state != hash_no
1879 && (t->type_qualifiers[0] == tq_Array
1880 || t->type_qualifiers[1] == tq_Array
1881 || t->type_qualifiers[2] == tq_Array
1882 || t->type_qualifiers[3] == tq_Array
1883 || t->type_qualifiers[4] == tq_Array
1884 || t->type_qualifiers[5] == tq_Array
1885 || t->basic_type == bt_Struct
1886 || t->basic_type == bt_Union
1887 || t->basic_type == bt_Enum
1888 || t->bitfield
1889 || t->num_dims > 0))
1890 state = hash_no;
1891
1892 /* See if we can hash this type, and save some space, but some types
1893 can't be hashed (because they contain arrays or continuations),
1894 and others can be put into the hash list, but cannot use existing
1895 types because other aux entries precede this one. */
1896
1897 if (state != hash_no)
1898 {
1899 thash_t *hash_ptr;
1900 symint_t hi;
1901
1902 hi = aux.isym & ((1 << HASHBITS) - 1);
1903 hi %= THASH_SIZE;
1904
1905 for (hash_ptr = hash_tbl[hi];
1906 hash_ptr != (thash_t *)0;
1907 hash_ptr = hash_ptr->next)
1908 {
1909 if (aux.isym == hash_ptr->type.isym)
1910 break;
1911 }
1912
1913 if (hash_ptr != (thash_t *) NULL && state == hash_yes)
1914 return hash_ptr->indx;
1915
1916 if (hash_ptr == (thash_t *) NULL)
1917 {
1918 hash_ptr = allocate_thash ();
1919 hash_ptr->next = hash_tbl[hi];
1920 hash_ptr->type = aux;
1921 hash_ptr->indx = vp->num_allocated;
1922 hash_tbl[hi] = hash_ptr;
1923 }
1924 }
1925
1926 /* Everything is set up, add the aux symbol. */
1927 if (vp->objects_last_page == vp->objects_per_page)
1928 add_varray_page (vp);
1929
1930 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1931 aux_ptr->type = aux_tir;
1932 aux_ptr->data = aux;
1933
1934 ret = vp->num_allocated++;
1935
1936 /* Add bitfield length if it exists.
1937
1938 NOTE: Mips documentation claims bitfield goes at the end of the
1939 AUX record, but the DECstation compiler emits it here.
1940 (This would only make a difference for enum bitfields.)
1941
1942 Also note: We use the last size given since gcc may emit 2
1943 for an enum bitfield. */
1944
1945 if (t->bitfield)
1946 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]);
1947
1948 /* Add tag information if needed. Structure, union, and enum
1949 references add 2 aux symbols: a [file index, symbol index]
1950 pointer to the structure type, and the current file index. */
1951
1952 if (t->basic_type == bt_Struct
1953 || t->basic_type == bt_Union
1954 || t->basic_type == bt_Enum)
1955 {
1956 symint_t file_index = t->tag_ptr->ifd;
1957 localsym_t *sym = t->tag_ptr->sym;
1958 forward_t *forward_ref = allocate_forward ();
1959
1960 if (sym != (localsym_t *) NULL)
1961 {
1962 forward_ref->next = sym->forward_ref;
1963 sym->forward_ref = forward_ref;
1964 }
1965 else
1966 {
1967 forward_ref->next = t->tag_ptr->forward_ref;
1968 t->tag_ptr->forward_ref = forward_ref;
1969 }
1970
1971 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil);
1972 forward_ref->index_ptr
1973 = &vp->last->datum->aux[vp->objects_last_page - 1];
1974
1975 (void) add_aux_sym_symint (file_index);
1976 forward_ref->ifd_ptr
1977 = &vp->last->datum->aux[vp->objects_last_page - 1];
1978 }
1979
1980 /* Add information about array bounds if they exist. */
1981 for (i = 0; i < t->num_dims; i++)
1982 {
1983 (void) add_aux_sym_rndx (ST_RFDESCAPE,
1984 cur_file_ptr->int_type);
1985
1986 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/
1987 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */
1988 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/
1989 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */
1990 ? 0
1991 : (t->sizes[i] * 8) / t->dimensions[i]);
1992 };
1993
1994 /* NOTE: Mips documentation claims that the bitfield width goes here.
1995 But it needs to be emitted earlier. */
1996
1997 return ret;
1998 }
1999 \f
2000 /* Add a tag to the tag table (unless it already exists). */
2001
2002 static tag_t *
2003 get_tag (const char *tag, /* tag name */
2004 localsym_t *sym, /* tag start block */
2005 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */)
2006 {
2007 shash_t *hash_ptr;
2008 tag_t *tag_ptr;
2009
2010 if (cur_file_ptr == (efdr_t *) NULL)
2011 as_fatal (_("no current file pointer"));
2012
2013 hash_ptr = (shash_t *) str_hash_find (tag_hash, tag);
2014
2015 if (hash_ptr != (shash_t *) NULL
2016 && hash_ptr->tag_ptr != (tag_t *) NULL)
2017 {
2018 tag_ptr = hash_ptr->tag_ptr;
2019 if (sym != (localsym_t *) NULL)
2020 {
2021 tag_ptr->basic_type = basic_type;
2022 tag_ptr->ifd = cur_file_ptr->file_index;
2023 tag_ptr->sym = sym;
2024 }
2025 return tag_ptr;
2026 }
2027
2028 if (hash_ptr == (shash_t *) NULL)
2029 {
2030 char *perm;
2031
2032 perm = xstrdup (tag);
2033 hash_ptr = allocate_shash ();
2034 str_hash_insert (tag_hash, perm, hash_ptr, 0);
2035 hash_ptr->string = perm;
2036 }
2037
2038 tag_ptr = allocate_tag ();
2039 tag_ptr->forward_ref = (forward_t *) NULL;
2040 tag_ptr->hash_ptr = hash_ptr;
2041 tag_ptr->same_name = hash_ptr->tag_ptr;
2042 tag_ptr->basic_type = basic_type;
2043 tag_ptr->sym = sym;
2044 tag_ptr->ifd = ((sym == (localsym_t *) NULL)
2045 ? (symint_t) -1
2046 : cur_file_ptr->file_index);
2047 tag_ptr->same_block = cur_tag_head->first_tag;
2048
2049 cur_tag_head->first_tag = tag_ptr;
2050 hash_ptr->tag_ptr = tag_ptr;
2051
2052 return tag_ptr;
2053 }
2054 \f
2055 /* Add an unknown {struct, union, enum} tag. */
2056
2057 static void
2058 add_unknown_tag (tag_t *ptag /* pointer to tag information */)
2059 {
2060 shash_t *hash_ptr = ptag->hash_ptr;
2061 char *name = hash_ptr->string;
2062 localsym_t *sym;
2063 forward_t **pf;
2064
2065 #ifdef ECOFF_DEBUG
2066 if (debug > 1)
2067 {
2068 char *agg_type = "{unknown aggregate type}";
2069 switch (ptag->basic_type)
2070 {
2071 case bt_Struct: agg_type = "struct"; break;
2072 case bt_Union: agg_type = "union"; break;
2073 case bt_Enum: agg_type = "enum"; break;
2074 default: break;
2075 }
2076
2077 fprintf (stderr, "unknown %s %.*s found\n", agg_type,
2078 hash_ptr->len, name_start);
2079 }
2080 #endif
2081
2082 sym = add_ecoff_symbol (name,
2083 st_Block,
2084 sc_Info,
2085 (symbolS *) NULL,
2086 (bfd_vma) 0,
2087 (symint_t) 0,
2088 (symint_t) 0);
2089
2090 (void) add_ecoff_symbol (name,
2091 st_End,
2092 sc_Info,
2093 (symbolS *) NULL,
2094 (bfd_vma) 0,
2095 (symint_t) 0,
2096 (symint_t) 0);
2097
2098 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next)
2099 ;
2100 *pf = ptag->forward_ref;
2101 }
2102 \f
2103 /* Add a procedure to the current file's list of procedures, and record
2104 this is the current procedure. If AENT, then only set the requested
2105 symbol's function type. */
2106
2107 static void
2108 add_procedure (char *func /* func name */, int aent)
2109 {
2110 varray_t *vp;
2111 proc_t *new_proc_ptr;
2112 symbolS *sym;
2113
2114 #ifdef ECOFF_DEBUG
2115 if (debug)
2116 fputc ('\n', stderr);
2117 #endif
2118
2119 /* Set the BSF_FUNCTION flag for the symbol. */
2120 sym = symbol_find_or_make (func);
2121 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION;
2122
2123 if (aent)
2124 return;
2125
2126 if (cur_file_ptr == (efdr_t *) NULL)
2127 as_fatal (_("no current file pointer"));
2128
2129 vp = &cur_file_ptr->procs;
2130
2131 if (vp->objects_last_page == vp->objects_per_page)
2132 add_varray_page (vp);
2133
2134 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++];
2135
2136 if (first_proc_ptr == (proc_t *) NULL)
2137 first_proc_ptr = new_proc_ptr;
2138
2139 vp->num_allocated++;
2140
2141 new_proc_ptr->pdr.isym = -1;
2142 new_proc_ptr->pdr.iline = -1;
2143 new_proc_ptr->pdr.lnLow = -1;
2144 new_proc_ptr->pdr.lnHigh = -1;
2145
2146 /* Push the start of the function. */
2147 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text,
2148 sym, (bfd_vma) 0, (symint_t) 0,
2149 (symint_t) 0);
2150
2151 ++proc_cnt;
2152
2153 /* Fill in the linenos preceding the .ent, if any. */
2154 if (noproc_lineno != (lineno_list_t *) NULL)
2155 {
2156 lineno_list_t *l;
2157
2158 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next)
2159 l->proc = new_proc_ptr;
2160 *last_lineno_ptr = noproc_lineno;
2161 while (*last_lineno_ptr != NULL)
2162 {
2163 last_lineno = *last_lineno_ptr;
2164 last_lineno_ptr = &last_lineno->next;
2165 }
2166 noproc_lineno = (lineno_list_t *) NULL;
2167 }
2168 }
2169
2170 symbolS *
2171 ecoff_get_cur_proc_sym (void)
2172 {
2173 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL);
2174 }
2175 \f
2176 /* Add a new filename, and set up all of the file relative
2177 virtual arrays (strings, symbols, aux syms, etc.). Record
2178 where the current file structure lives. */
2179
2180 static void
2181 add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake)
2182 {
2183 int first_ch;
2184 efdr_t *fil_ptr;
2185
2186 #ifdef ECOFF_DEBUG
2187 if (debug)
2188 fprintf (stderr, "\tfile\t%.*s\n", len, file_start);
2189 #endif
2190
2191 /* If the file name is NULL, then no .file symbol appeared, and we
2192 want to use the actual file name. */
2193 if (file_name == (const char *) NULL)
2194 {
2195 if (first_file != (efdr_t *) NULL)
2196 as_fatal (_("fake .file after real one"));
2197 file_name = as_where ((unsigned int *) NULL);
2198
2199 /* Automatically generate ECOFF debugging information, since I
2200 think that's what other ECOFF assemblers do. We don't do
2201 this if we see a .file directive with a string, since that
2202 implies that some sort of debugging information is being
2203 provided. */
2204 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED)
2205 debug_type = DEBUG_ECOFF;
2206 }
2207 else if (debug_type == DEBUG_UNSPECIFIED)
2208 debug_type = DEBUG_NONE;
2209
2210 #ifndef NO_LISTING
2211 if (listing)
2212 listing_source_file (file_name);
2213 #endif
2214
2215 current_stabs_filename = file_name;
2216
2217 /* If we're creating stabs, then we don't actually make a new FDR.
2218 Instead, we just create a stabs symbol. */
2219 if (stabs_seen)
2220 {
2221 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2222 symbol_new (FAKE_LABEL_NAME, now_seg,
2223 frag_now, frag_now_fix ()),
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 frag_now, frag_now_fix ()),
3014 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
3015
3016 #ifdef md_flush_pending_output
3017 md_flush_pending_output ();
3018 #endif
3019
3020 cur_proc_ptr = (proc_t *) NULL;
3021
3022 (void) restore_line_pointer (name_end);
3023 demand_empty_rest_of_line ();
3024 }
3025 \f
3026 /* Parse .ent directives. */
3027
3028 void
3029 ecoff_directive_ent (int aent)
3030 {
3031 char *name;
3032 char name_end;
3033
3034 if (cur_file_ptr == (efdr_t *) NULL)
3035 add_file ((const char *) NULL, 0, 1);
3036
3037 if (!aent && cur_proc_ptr != (proc_t *) NULL)
3038 {
3039 as_warn (_("second .ent directive found before .end directive"));
3040 demand_empty_rest_of_line ();
3041 return;
3042 }
3043
3044 name_end = get_symbol_name (&name);
3045
3046 if (name == input_line_pointer)
3047 {
3048 as_warn (_("%s directive has no name"), aent ? ".aent" : ".ent");
3049 (void) restore_line_pointer (name_end);
3050 demand_empty_rest_of_line ();
3051 return;
3052 }
3053
3054 add_procedure (name, aent);
3055
3056 (void) restore_line_pointer (name_end);
3057
3058 /* The .ent directive is sometimes followed by a number. I'm not
3059 really sure what the number means. I don't see any way to store
3060 the information in the PDR. The Irix 4 assembler seems to ignore
3061 the information. */
3062 SKIP_WHITESPACE ();
3063 if (*input_line_pointer == ',')
3064 {
3065 ++input_line_pointer;
3066 SKIP_WHITESPACE ();
3067 }
3068 if (ISDIGIT (*input_line_pointer)
3069 || *input_line_pointer == '-')
3070 (void) get_absolute_expression ();
3071
3072 demand_empty_rest_of_line ();
3073 }
3074 \f
3075 /* Parse .extern directives. */
3076
3077 void
3078 ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED)
3079 {
3080 char *name;
3081 int c;
3082 symbolS *symbolp;
3083 valueT size;
3084
3085 c = get_symbol_name (&name);
3086 symbolp = symbol_find_or_make (name);
3087 (void) restore_line_pointer (c);
3088
3089 S_SET_EXTERNAL (symbolp);
3090
3091 if (*input_line_pointer == ',')
3092 ++input_line_pointer;
3093 size = get_absolute_expression ();
3094
3095 symbol_get_obj (symbolp)->ecoff_extern_size = size;
3096 }
3097 \f
3098 /* Parse .file directives. */
3099
3100 void
3101 ecoff_directive_file (int ignore ATTRIBUTE_UNUSED)
3102 {
3103 int indx;
3104 char *name;
3105 int len;
3106
3107 if (cur_proc_ptr != (proc_t *) NULL)
3108 {
3109 as_warn (_("no way to handle .file within .ent/.end section"));
3110 demand_empty_rest_of_line ();
3111 return;
3112 }
3113
3114 indx = (int) get_absolute_expression ();
3115
3116 /* FIXME: we don't have to save the name here. */
3117 name = demand_copy_C_string (&len);
3118
3119 add_file (name, indx - 1, 0);
3120
3121 demand_empty_rest_of_line ();
3122 }
3123 \f
3124 /* Parse .fmask directives. */
3125
3126 void
3127 ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED)
3128 {
3129 long val;
3130
3131 if (cur_proc_ptr == (proc_t *) NULL)
3132 {
3133 as_warn (_(".fmask outside of .ent"));
3134 demand_empty_rest_of_line ();
3135 return;
3136 }
3137
3138 if (get_absolute_expression_and_terminator (&val) != ',')
3139 {
3140 as_warn (_("bad .fmask directive"));
3141 --input_line_pointer;
3142 demand_empty_rest_of_line ();
3143 return;
3144 }
3145
3146 cur_proc_ptr->pdr.fregmask = val;
3147 cur_proc_ptr->pdr.fregoffset = get_absolute_expression ();
3148
3149 demand_empty_rest_of_line ();
3150 }
3151 \f
3152 /* Parse .frame directives. */
3153
3154 void
3155 ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED)
3156 {
3157 long val;
3158
3159 if (cur_proc_ptr == (proc_t *) NULL)
3160 {
3161 as_warn (_(".frame outside of .ent"));
3162 demand_empty_rest_of_line ();
3163 return;
3164 }
3165
3166 cur_proc_ptr->pdr.framereg = tc_get_register (1);
3167
3168 SKIP_WHITESPACE ();
3169 if (*input_line_pointer++ != ','
3170 || get_absolute_expression_and_terminator (&val) != ',')
3171 {
3172 as_warn (_("bad .frame directive"));
3173 --input_line_pointer;
3174 demand_empty_rest_of_line ();
3175 return;
3176 }
3177
3178 cur_proc_ptr->pdr.frameoffset = val;
3179
3180 cur_proc_ptr->pdr.pcreg = tc_get_register (0);
3181
3182 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to
3183 Sandro. I don't yet know where this value should be stored, if
3184 anywhere. Don't call demand_empty_rest_of_line (). */
3185 s_ignore (42);
3186 }
3187 \f
3188 /* Parse .mask directives. */
3189
3190 void
3191 ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED)
3192 {
3193 long val;
3194
3195 if (cur_proc_ptr == (proc_t *) NULL)
3196 {
3197 as_warn (_(".mask outside of .ent"));
3198 demand_empty_rest_of_line ();
3199 return;
3200 }
3201
3202 if (get_absolute_expression_and_terminator (&val) != ',')
3203 {
3204 as_warn (_("bad .mask directive"));
3205 --input_line_pointer;
3206 demand_empty_rest_of_line ();
3207 return;
3208 }
3209
3210 cur_proc_ptr->pdr.regmask = val;
3211 cur_proc_ptr->pdr.regoffset = get_absolute_expression ();
3212
3213 demand_empty_rest_of_line ();
3214 }
3215 \f
3216 /* Parse .loc directives. */
3217
3218 void
3219 ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED)
3220 {
3221 lineno_list_t *list;
3222 symint_t lineno;
3223
3224 if (cur_file_ptr == (efdr_t *) NULL)
3225 {
3226 as_warn (_(".loc before .file"));
3227 demand_empty_rest_of_line ();
3228 return;
3229 }
3230
3231 if (now_seg != text_section)
3232 {
3233 as_warn (_(".loc outside of .text"));
3234 demand_empty_rest_of_line ();
3235 return;
3236 }
3237
3238 /* Skip the file number. */
3239 SKIP_WHITESPACE ();
3240 get_absolute_expression ();
3241 SKIP_WHITESPACE ();
3242
3243 lineno = get_absolute_expression ();
3244
3245 #ifndef NO_LISTING
3246 if (listing)
3247 listing_source_line (lineno);
3248 #endif
3249
3250 /* If we're building stabs, then output a special label rather than
3251 ECOFF line number info. */
3252 if (stabs_seen)
3253 {
3254 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text,
3255 symbol_new (FAKE_LABEL_NAME, now_seg,
3256 frag_now, frag_now_fix ()),
3257 (bfd_vma) 0, 0, lineno);
3258 return;
3259 }
3260
3261 list = allocate_lineno_list ();
3262
3263 list->next = (lineno_list_t *) NULL;
3264 list->file = cur_file_ptr;
3265 list->proc = cur_proc_ptr;
3266 list->frag = frag_now;
3267 list->paddr = frag_now_fix ();
3268 list->lineno = lineno;
3269
3270 /* We don't want to merge files which have line numbers. */
3271 cur_file_ptr->fdr.fMerge = 0;
3272
3273 /* A .loc directive will sometimes appear before a .ent directive,
3274 which means that cur_proc_ptr will be NULL here. Arrange to
3275 patch this up. */
3276 if (cur_proc_ptr == (proc_t *) NULL)
3277 {
3278 lineno_list_t **pl;
3279
3280 pl = &noproc_lineno;
3281 while (*pl != (lineno_list_t *) NULL)
3282 pl = &(*pl)->next;
3283 *pl = list;
3284 }
3285 else
3286 {
3287 last_lineno = list;
3288 *last_lineno_ptr = list;
3289 last_lineno_ptr = &list->next;
3290 }
3291 }
3292
3293 /* The MIPS assembler sometimes inserts nop instructions in the
3294 instruction stream. When this happens, we must patch up the .loc
3295 information so that it points to the instruction after the nop. */
3296
3297 void
3298 ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset)
3299 {
3300 if (last_lineno != NULL
3301 && last_lineno->frag == old_frag
3302 && last_lineno->paddr == old_frag_offset)
3303 {
3304 last_lineno->frag = frag_now;
3305 last_lineno->paddr = frag_now_fix ();
3306 }
3307 }
3308 \f
3309 /* Make sure the @stabs symbol is emitted. */
3310
3311 static void
3312 mark_stabs (int ignore ATTRIBUTE_UNUSED)
3313 {
3314 if (! stabs_seen)
3315 {
3316 /* Add a dummy @stabs symbol. */
3317 stabs_seen = 1;
3318 (void) add_ecoff_symbol (stabs_symbol, st_Nil, sc_Info,
3319 (symbolS *) NULL,
3320 (bfd_vma) 0, (symint_t) -1,
3321 ECOFF_MARK_STAB (0));
3322 }
3323 }
3324 \f
3325 /* Parse .weakext directives. */
3326 #ifndef TC_MIPS
3327 /* For TC_MIPS use the version in tc-mips.c. */
3328 void
3329 ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED)
3330 {
3331 char *name;
3332 int c;
3333 symbolS *symbolP;
3334 expressionS exp;
3335
3336 c = get_symbol_name (&name);
3337 symbolP = symbol_find_or_make (name);
3338 (void) restore_line_pointer (c);
3339
3340 SKIP_WHITESPACE ();
3341
3342 if (*input_line_pointer == ',')
3343 {
3344 if (S_IS_DEFINED (symbolP))
3345 {
3346 as_bad (_("symbol `%s' is already defined"),
3347 S_GET_NAME (symbolP));
3348 ignore_rest_of_line ();
3349 return;
3350 }
3351
3352 ++input_line_pointer;
3353 SKIP_WHITESPACE ();
3354 if (! is_end_of_line[(unsigned char) *input_line_pointer])
3355 {
3356 expression (&exp);
3357 if (exp.X_op != O_symbol)
3358 {
3359 as_bad (_("bad .weakext directive"));
3360 ignore_rest_of_line ();
3361 return;
3362 }
3363 symbol_set_value_expression (symbolP, &exp);
3364 }
3365 }
3366
3367 S_SET_WEAK (symbolP);
3368
3369 demand_empty_rest_of_line ();
3370 }
3371 #endif /* not TC_MIPS */
3372 \f
3373 /* Handle .stabs directives. The actual parsing routine is done by a
3374 generic routine. This routine is called via OBJ_PROCESS_STAB.
3375 When this is called, input_line_pointer will be pointing at the
3376 value field of the stab.
3377
3378 .stabs directives have five fields:
3379 "string" a string, encoding the type information.
3380 code a numeric code, defined in <stab.h>
3381 0 a zero
3382 desc a zero or line number
3383 value a numeric value or an address.
3384
3385 If the value is relocatable, we transform this into:
3386 iss points as an index into string space
3387 value value from lookup of the name
3388 st st from lookup of the name
3389 sc sc from lookup of the name
3390 index code|CODE_MASK
3391
3392 If the value is not relocatable, we transform this into:
3393 iss points as an index into string space
3394 value value
3395 st st_Nil
3396 sc sc_Nil
3397 index code|CODE_MASK
3398
3399 .stabn directives have four fields (string is null):
3400 code a numeric code, defined in <stab.h>
3401 0 a zero
3402 desc a zero or a line number
3403 value a numeric value or an address. */
3404
3405 void
3406 ecoff_stab (segT sec ATTRIBUTE_UNUSED,
3407 int what,
3408 const char *string,
3409 int type,
3410 int other,
3411 int desc)
3412 {
3413 efdr_t *save_file_ptr = cur_file_ptr;
3414 symbolS *sym;
3415 symint_t value;
3416 bfd_vma addend;
3417 st_t st;
3418 sc_t sc;
3419 symint_t indx;
3420 localsym_t *hold = NULL;
3421
3422 ecoff_debugging_seen = 1;
3423
3424 /* We don't handle .stabd. */
3425 if (what != 's' && what != 'n')
3426 {
3427 as_bad (_(".stab%c is not supported"), what);
3428 return;
3429 }
3430
3431 /* A .stabn uses a null name, not an empty string. */
3432 if (what == 'n')
3433 string = NULL;
3434
3435 /* We ignore the other field. */
3436 if (other != 0)
3437 as_warn (_(".stab%c: ignoring non-zero other field"), what);
3438
3439 /* Make sure we have a current file. */
3440 if (cur_file_ptr == (efdr_t *) NULL)
3441 {
3442 add_file ((const char *) NULL, 0, 1);
3443 save_file_ptr = cur_file_ptr;
3444 }
3445
3446 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
3447 signal to gdb. */
3448 if (stabs_seen == 0)
3449 mark_stabs (0);
3450
3451 /* Line number stabs are handled differently, since they have two
3452 values, the line number and the address of the label. We use the
3453 index field (aka desc) to hold the line number, and the value
3454 field to hold the address. The symbol type is st_Label, which
3455 should be different from the other stabs, so that gdb can
3456 recognize it. */
3457 if (type == N_SLINE)
3458 {
3459 SYMR dummy_symr;
3460 char *name;
3461 char name_end;
3462
3463 #ifndef NO_LISTING
3464 if (listing)
3465 listing_source_line ((unsigned int) desc);
3466 #endif
3467
3468 dummy_symr.index = desc;
3469 if (dummy_symr.index != desc)
3470 {
3471 as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"),
3472 desc, what);
3473 return;
3474 }
3475
3476 name_end = get_symbol_name (&name);
3477 sym = symbol_find_or_make (name);
3478 (void) restore_line_pointer (name_end);
3479
3480 value = 0;
3481 addend = 0;
3482 st = st_Label;
3483 sc = sc_Text;
3484 indx = desc;
3485 }
3486 else
3487 {
3488 #ifndef NO_LISTING
3489 if (listing && (type == N_SO || type == N_SOL))
3490 listing_source_file (string);
3491 #endif
3492
3493 if (ISDIGIT (*input_line_pointer)
3494 || *input_line_pointer == '-'
3495 || *input_line_pointer == '+')
3496 {
3497 st = st_Nil;
3498 sc = sc_Nil;
3499 sym = (symbolS *) NULL;
3500 value = get_absolute_expression ();
3501 addend = 0;
3502 }
3503 else if (! is_name_beginner ((unsigned char) *input_line_pointer))
3504 {
3505 as_warn (_("illegal .stab%c directive, bad character"), what);
3506 return;
3507 }
3508 else
3509 {
3510 expressionS exp;
3511
3512 sc = sc_Nil;
3513 st = st_Nil;
3514
3515 expression (&exp);
3516 if (exp.X_op == O_constant)
3517 {
3518 sym = NULL;
3519 value = exp.X_add_number;
3520 addend = 0;
3521 }
3522 else if (exp.X_op == O_symbol)
3523 {
3524 sym = exp.X_add_symbol;
3525 value = 0;
3526 addend = exp.X_add_number;
3527 }
3528 else
3529 {
3530 sym = make_expr_symbol (&exp);
3531 value = 0;
3532 addend = 0;
3533 }
3534 }
3535
3536 indx = ECOFF_MARK_STAB (type);
3537 }
3538
3539 /* Don't store the stabs symbol we are creating as the type of the
3540 ECOFF symbol. We want to compute the type of the ECOFF symbol
3541 independently. */
3542 if (sym != (symbolS *) NULL)
3543 hold = symbol_get_obj (sym)->ecoff_symbol;
3544
3545 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx);
3546
3547 if (sym != (symbolS *) NULL)
3548 symbol_get_obj (sym)->ecoff_symbol = hold;
3549
3550 /* Restore normal file type. */
3551 cur_file_ptr = save_file_ptr;
3552 }
3553 \f
3554 static asection ecoff_scom_section;
3555 static const asymbol ecoff_scom_symbol =
3556 GLOBAL_SYM_INIT (SCOMMON, &ecoff_scom_section);
3557 static asection ecoff_scom_section =
3558 BFD_FAKE_SECTION (ecoff_scom_section, &ecoff_scom_symbol,
3559 SCOMMON, 0, SEC_IS_COMMON | SEC_SMALL_DATA);
3560
3561 /* Frob an ECOFF symbol. Small common symbols go into a special
3562 .scommon section rather than bfd_com_section. */
3563
3564 void
3565 ecoff_frob_symbol (symbolS *sym)
3566 {
3567 if (S_IS_COMMON (sym)
3568 && S_GET_VALUE (sym) > 0
3569 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput))
3570 {
3571 S_SET_SEGMENT (sym, &ecoff_scom_section);
3572 }
3573
3574 /* Double check weak symbols. */
3575 if (S_IS_WEAK (sym))
3576 {
3577 if (S_IS_COMMON (sym))
3578 as_bad (_("symbol `%s' can not be both weak and common"),
3579 S_GET_NAME (sym));
3580 }
3581 }
3582 \f
3583 /* Add bytes to the symbolic information buffer. */
3584
3585 static char *
3586 ecoff_add_bytes (char **buf,
3587 char **bufend,
3588 char *bufptr,
3589 unsigned long need)
3590 {
3591 unsigned long at;
3592 unsigned long want;
3593
3594 at = bufptr - *buf;
3595 need -= *bufend - bufptr;
3596 if (need < PAGE_SIZE)
3597 need = PAGE_SIZE;
3598 want = (*bufend - *buf) + need;
3599 *buf = XRESIZEVEC (char, *buf, want);
3600 *bufend = *buf + want;
3601 return *buf + at;
3602 }
3603
3604 /* Adjust the symbolic information buffer to the alignment required
3605 for the ECOFF target debugging information. */
3606
3607 static unsigned long
3608 ecoff_padding_adjust (const struct ecoff_debug_swap *backend,
3609 char **buf,
3610 char **bufend,
3611 unsigned long offset,
3612 char **bufptrptr)
3613 {
3614 bfd_size_type align;
3615
3616 align = backend->debug_align;
3617 if ((offset & (align - 1)) != 0)
3618 {
3619 unsigned long add;
3620
3621 add = align - (offset & (align - 1));
3622 if ((unsigned long) (*bufend - (*buf + offset)) < add)
3623 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add);
3624 memset (*buf + offset, 0, add);
3625 offset += add;
3626 if (bufptrptr != (char **) NULL)
3627 *bufptrptr = *buf + offset;
3628 }
3629
3630 return offset;
3631 }
3632
3633 /* Build the line number information. */
3634
3635 static unsigned long
3636 ecoff_build_lineno (const struct ecoff_debug_swap *backend,
3637 char **buf,
3638 char **bufend,
3639 unsigned long offset,
3640 long *linecntptr)
3641 {
3642 char *bufptr;
3643 lineno_list_t *l;
3644 lineno_list_t *last;
3645 efdr_t *file;
3646 proc_t *proc;
3647 unsigned long c;
3648 long iline;
3649 long totcount;
3650 lineno_list_t first;
3651 lineno_list_t *local_first_lineno = first_lineno;
3652
3653 if (linecntptr != (long *) NULL)
3654 *linecntptr = 0;
3655
3656 bufptr = *buf + offset;
3657
3658 file = (efdr_t *) NULL;
3659 proc = (proc_t *) NULL;
3660 last = (lineno_list_t *) NULL;
3661 c = offset;
3662 iline = 0;
3663 totcount = 0;
3664
3665 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to
3666 remove this code. */
3667 /* For some reason the address of the first procedure is ignored
3668 when reading line numbers. This doesn't matter if the address of
3669 the first procedure is 0, but when gcc is generating MIPS
3670 embedded PIC code, it will put strings in the .text section
3671 before the first procedure. We cope by inserting a dummy line if
3672 the address of the first procedure is not 0. Hopefully this
3673 won't screw things up too badly.
3674
3675 Don't do this for ECOFF assembly source line numbers. They work
3676 without this extra attention. */
3677 if (debug_type != DEBUG_ECOFF
3678 && first_proc_ptr != (proc_t *) NULL
3679 && local_first_lineno != (lineno_list_t *) NULL
3680 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym)
3681 + bfd_section_vma (S_GET_SEGMENT (first_proc_ptr->sym->as_sym)))
3682 != 0))
3683 {
3684 first.file = local_first_lineno->file;
3685 first.proc = local_first_lineno->proc;
3686 first.frag = &zero_address_frag;
3687 first.paddr = 0;
3688 first.lineno = 0;
3689
3690 first.next = local_first_lineno;
3691 local_first_lineno = &first;
3692 }
3693
3694 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next)
3695 {
3696 long count;
3697 long delta;
3698
3699 /* Get the offset to the memory address of the next line number
3700 (in words). Do this first, so that we can skip ahead to the
3701 next useful line number entry. */
3702 if (l->next == (lineno_list_t *) NULL)
3703 {
3704 /* We want a count of zero, but it will be decremented
3705 before it is used. */
3706 count = 1;
3707 }
3708 else if (l->next->frag->fr_address + l->next->paddr
3709 > l->frag->fr_address + l->paddr)
3710 {
3711 count = ((l->next->frag->fr_address + l->next->paddr
3712 - (l->frag->fr_address + l->paddr))
3713 >> 2);
3714 }
3715 else
3716 {
3717 /* Don't change last, so we still get the right delta. */
3718 continue;
3719 }
3720
3721 if (l->file != file || l->proc != proc)
3722 {
3723 if (l->proc != proc && proc != (proc_t *) NULL)
3724 proc->pdr.lnHigh = last->lineno;
3725 if (l->file != file && file != (efdr_t *) NULL)
3726 {
3727 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3728 file->fdr.cline = totcount + count;
3729 if (linecntptr != (long *) NULL)
3730 *linecntptr += totcount + count;
3731 totcount = 0;
3732 }
3733
3734 if (l->file != file)
3735 {
3736 efdr_t *last_file = file;
3737
3738 file = l->file;
3739 if (last_file != (efdr_t *) NULL)
3740 file->fdr.ilineBase
3741 = last_file->fdr.ilineBase + last_file->fdr.cline;
3742 else
3743 file->fdr.ilineBase = 0;
3744 file->fdr.cbLineOffset = c;
3745 }
3746 if (l->proc != proc)
3747 {
3748 proc = l->proc;
3749 if (proc != (proc_t *) NULL)
3750 {
3751 proc->pdr.lnLow = l->lineno;
3752 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset;
3753 proc->pdr.iline = totcount;
3754 }
3755 }
3756
3757 last = (lineno_list_t *) NULL;
3758 }
3759
3760 totcount += count;
3761
3762 /* Get the offset to this line number. */
3763 if (last == (lineno_list_t *) NULL)
3764 delta = 0;
3765 else
3766 delta = l->lineno - last->lineno;
3767
3768 /* Put in the offset to this line number. */
3769 while (delta != 0)
3770 {
3771 int setcount;
3772
3773 /* 1 is added to each count read. */
3774 --count;
3775 /* We can only adjust the word count by up to 15 words at a
3776 time. */
3777 if (count <= 0x0f)
3778 {
3779 setcount = count;
3780 count = 0;
3781 }
3782 else
3783 {
3784 setcount = 0x0f;
3785 count -= 0x0f;
3786 }
3787 if (delta >= -7 && delta <= 7)
3788 {
3789 if (bufptr >= *bufend)
3790 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3791 *bufptr++ = setcount + (delta << 4);
3792 delta = 0;
3793 ++c;
3794 }
3795 else
3796 {
3797 int set;
3798
3799 if (*bufend - bufptr < 3)
3800 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3);
3801 *bufptr++ = setcount + (8 << 4);
3802 if (delta < -0x8000)
3803 {
3804 set = -0x8000;
3805 delta += 0x8000;
3806 }
3807 else if (delta > 0x7fff)
3808 {
3809 set = 0x7fff;
3810 delta -= 0x7fff;
3811 }
3812 else
3813 {
3814 set = delta;
3815 delta = 0;
3816 }
3817 *bufptr++ = set >> 8;
3818 *bufptr++ = set & 0xffff;
3819 c += 3;
3820 }
3821 }
3822
3823 /* Finish adjusting the count. */
3824 while (count > 0)
3825 {
3826 if (bufptr >= *bufend)
3827 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3828 /* 1 is added to each count read. */
3829 --count;
3830 if (count > 0x0f)
3831 {
3832 *bufptr++ = 0x0f;
3833 count -= 0x0f;
3834 }
3835 else
3836 {
3837 *bufptr++ = count;
3838 count = 0;
3839 }
3840 ++c;
3841 }
3842
3843 ++iline;
3844 last = l;
3845 }
3846
3847 if (proc != (proc_t *) NULL)
3848 proc->pdr.lnHigh = last->lineno;
3849 if (file != (efdr_t *) NULL)
3850 {
3851 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3852 file->fdr.cline = totcount;
3853 }
3854
3855 if (linecntptr != (long *) NULL)
3856 *linecntptr += totcount;
3857
3858 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr);
3859
3860 return c;
3861 }
3862
3863 /* Build and swap out the symbols. */
3864
3865 static unsigned long
3866 ecoff_build_symbols (const struct ecoff_debug_swap *backend,
3867 char **buf,
3868 char **bufend,
3869 unsigned long offset)
3870 {
3871 const bfd_size_type external_sym_size = backend->external_sym_size;
3872 void (* const swap_sym_out) (bfd *, const SYMR *, void *)
3873 = backend->swap_sym_out;
3874 char *sym_out;
3875 long isym;
3876 vlinks_t *file_link;
3877
3878 sym_out = *buf + offset;
3879
3880 isym = 0;
3881
3882 /* The symbols are stored by file. */
3883 for (file_link = file_desc.first;
3884 file_link != (vlinks_t *) NULL;
3885 file_link = file_link->next)
3886 {
3887 int ifilesym;
3888 int fil_cnt;
3889 efdr_t *fil_ptr;
3890 efdr_t *fil_end;
3891
3892 if (file_link->next == (vlinks_t *) NULL)
3893 fil_cnt = file_desc.objects_last_page;
3894 else
3895 fil_cnt = file_desc.objects_per_page;
3896 fil_ptr = file_link->datum->file;
3897 fil_end = fil_ptr + fil_cnt;
3898 for (; fil_ptr < fil_end; fil_ptr++)
3899 {
3900 vlinks_t *sym_link;
3901
3902 fil_ptr->fdr.isymBase = isym;
3903 ifilesym = isym;
3904 for (sym_link = fil_ptr->symbols.first;
3905 sym_link != (vlinks_t *) NULL;
3906 sym_link = sym_link->next)
3907 {
3908 int sym_cnt;
3909 localsym_t *sym_ptr;
3910 localsym_t *sym_end;
3911
3912 if (sym_link->next == (vlinks_t *) NULL)
3913 sym_cnt = fil_ptr->symbols.objects_last_page;
3914 else
3915 sym_cnt = fil_ptr->symbols.objects_per_page;
3916 sym_ptr = sym_link->datum->sym;
3917 sym_end = sym_ptr + sym_cnt;
3918 for (; sym_ptr < sym_end; sym_ptr++)
3919 {
3920 int local;
3921 symbolS *as_sym;
3922 forward_t *f;
3923
3924 know (sym_ptr->file_ptr == fil_ptr);
3925
3926 /* If there is no associated gas symbol, then this
3927 is a pure debugging symbol. We have already
3928 added the name (if any) to fil_ptr->strings.
3929 Otherwise we must decide whether this is an
3930 external or a local symbol (actually, it may be
3931 both if the local provides additional debugging
3932 information for the external). */
3933 local = 1;
3934 as_sym = sym_ptr->as_sym;
3935 if (as_sym != (symbolS *) NULL)
3936 {
3937 symint_t indx;
3938
3939 /* The value of a block start symbol is the
3940 offset from the start of the procedure. For
3941 other symbols we just use the gas value (but
3942 we must offset it by the vma of the section,
3943 just as BFD does, because BFD will not see
3944 this value). */
3945 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block
3946 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text)
3947 {
3948 symbolS *begin_sym;
3949
3950 know (sym_ptr->proc_ptr != (proc_t *) NULL);
3951 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
3952 if (S_GET_SEGMENT (as_sym)
3953 != S_GET_SEGMENT (begin_sym))
3954 as_warn (_(".begin/.bend in different segments"));
3955 sym_ptr->ecoff_sym.asym.value =
3956 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
3957 }
3958 else
3959 sym_ptr->ecoff_sym.asym.value =
3960 (S_GET_VALUE (as_sym)
3961 + bfd_section_vma (S_GET_SEGMENT (as_sym))
3962 + sym_ptr->addend);
3963
3964 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym);
3965
3966 /* Set st_Proc to st_StaticProc for local
3967 functions. */
3968 if (sym_ptr->ecoff_sym.asym.st == st_Proc
3969 && S_IS_DEFINED (as_sym)
3970 && ! S_IS_EXTERNAL (as_sym)
3971 && ! S_IS_WEAK (as_sym))
3972 sym_ptr->ecoff_sym.asym.st = st_StaticProc;
3973
3974 /* Get the type and storage class based on where
3975 the symbol actually wound up. Traditionally,
3976 N_LBRAC and N_RBRAC are *not* relocated. */
3977 indx = sym_ptr->ecoff_sym.asym.index;
3978 if (sym_ptr->ecoff_sym.asym.st == st_Nil
3979 && sym_ptr->ecoff_sym.asym.sc == sc_Nil
3980 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
3981 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC)
3982 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC))))
3983 {
3984 segT seg;
3985 const char *segname;
3986 st_t st;
3987 sc_t sc;
3988
3989 seg = S_GET_SEGMENT (as_sym);
3990 segname = segment_name (seg);
3991
3992 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
3993 && (S_IS_EXTERNAL (as_sym)
3994 || S_IS_WEAK (as_sym)
3995 || ! S_IS_DEFINED (as_sym)))
3996 {
3997 if ((symbol_get_bfdsym (as_sym)->flags
3998 & BSF_FUNCTION) != 0)
3999 st = st_Proc;
4000 else
4001 st = st_Global;
4002 }
4003 else if (seg == text_section)
4004 st = st_Label;
4005 else
4006 st = st_Static;
4007
4008 if (! S_IS_DEFINED (as_sym))
4009 {
4010 valueT s;
4011
4012 s = symbol_get_obj (as_sym)->ecoff_extern_size;
4013 if (s == 0
4014 || s > bfd_get_gp_size (stdoutput))
4015 sc = sc_Undefined;
4016 else
4017 {
4018 sc = sc_SUndefined;
4019 sym_ptr->ecoff_sym.asym.value = s;
4020 }
4021 #ifdef S_SET_SIZE
4022 S_SET_SIZE (as_sym, s);
4023 #endif
4024 }
4025 else if (S_IS_COMMON (as_sym))
4026 {
4027 if (S_GET_VALUE (as_sym) > 0
4028 && (S_GET_VALUE (as_sym)
4029 <= bfd_get_gp_size (stdoutput)))
4030 sc = sc_SCommon;
4031 else
4032 sc = sc_Common;
4033 }
4034 else if (seg == text_section)
4035 sc = sc_Text;
4036 else if (seg == data_section)
4037 sc = sc_Data;
4038 else if (strcmp (segname, ".rdata") == 0
4039 || strcmp (segname, ".rodata") == 0)
4040 sc = sc_RData;
4041 else if (strcmp (segname, ".sdata") == 0)
4042 sc = sc_SData;
4043 else if (seg == bss_section)
4044 sc = sc_Bss;
4045 else if (strcmp (segname, ".sbss") == 0)
4046 sc = sc_SBss;
4047 else if (seg == bfd_abs_section_ptr)
4048 sc = sc_Abs;
4049 else
4050 {
4051 /* This must be a user named section.
4052 This is not possible in ECOFF, but it
4053 is in ELF. */
4054 sc = sc_Data;
4055 }
4056
4057 sym_ptr->ecoff_sym.asym.st = (int) st;
4058 sym_ptr->ecoff_sym.asym.sc = (int) sc;
4059 }
4060
4061 /* This is just an external symbol if it is
4062 outside a procedure and it has a type.
4063 FIXME: g++ will generate symbols which have
4064 different names in the debugging information
4065 than the actual symbol. Should we handle
4066 them here? */
4067 if ((S_IS_EXTERNAL (as_sym)
4068 || S_IS_WEAK (as_sym)
4069 || ! S_IS_DEFINED (as_sym))
4070 && sym_ptr->proc_ptr == (proc_t *) NULL
4071 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil
4072 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym))
4073 local = 0;
4074
4075 /* This is just an external symbol if it is a
4076 common symbol. */
4077 if (S_IS_COMMON (as_sym))
4078 local = 0;
4079
4080 /* If an st_end symbol has an associated gas
4081 symbol, then it is a local label created for
4082 a .bend or .end directive. Stabs line
4083 numbers will have FAKE_LABEL_CHAR in the names. */
4084 if (local
4085 && sym_ptr->ecoff_sym.asym.st != st_End
4086 && strchr (sym_ptr->name, FAKE_LABEL_CHAR) == 0)
4087 sym_ptr->ecoff_sym.asym.iss =
4088 add_string (&fil_ptr->strings,
4089 fil_ptr->str_hash,
4090 sym_ptr->name,
4091 (shash_t **) NULL);
4092 }
4093
4094 /* We now know the index of this symbol; fill in
4095 locations that have been waiting for that
4096 information. */
4097 if (sym_ptr->begin_ptr != (localsym_t *) NULL)
4098 {
4099 localsym_t *begin_ptr;
4100 st_t begin_type;
4101
4102 know (local);
4103 begin_ptr = sym_ptr->begin_ptr;
4104 know (begin_ptr->sym_index != -1);
4105 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index;
4106 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4107 sym_ptr->ecoff_sym.asym.iss =
4108 begin_ptr->ecoff_sym.asym.iss;
4109
4110 begin_type = (st_t) begin_ptr->ecoff_sym.asym.st;
4111 if (begin_type == st_File
4112 || begin_type == st_Block)
4113 {
4114 begin_ptr->ecoff_sym.asym.index =
4115 isym - ifilesym + 1;
4116 (*swap_sym_out) (stdoutput,
4117 &begin_ptr->ecoff_sym.asym,
4118 (*buf
4119 + offset
4120 + (begin_ptr->sym_index
4121 * external_sym_size)));
4122 }
4123 else
4124 {
4125 know (begin_ptr->index_ptr != (aux_t *) NULL);
4126 begin_ptr->index_ptr->data.isym =
4127 isym - ifilesym + 1;
4128 }
4129
4130 /* The value of the symbol marking the end of a
4131 procedure is the size of the procedure. The
4132 value of the symbol marking the end of a
4133 block is the offset from the start of the
4134 procedure to the block. */
4135 if (begin_type == st_Proc
4136 || begin_type == st_StaticProc)
4137 {
4138 know (as_sym != (symbolS *) NULL);
4139 know (begin_ptr->as_sym != (symbolS *) NULL);
4140 if (S_GET_SEGMENT (as_sym)
4141 != S_GET_SEGMENT (begin_ptr->as_sym))
4142 as_warn (_(".begin/.bend in different segments"));
4143 sym_ptr->ecoff_sym.asym.value =
4144 (S_GET_VALUE (as_sym)
4145 - S_GET_VALUE (begin_ptr->as_sym));
4146
4147 /* If the size is odd, this is probably a
4148 mips16 function; force it to be even. */
4149 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0)
4150 ++sym_ptr->ecoff_sym.asym.value;
4151
4152 #ifdef S_SET_SIZE
4153 S_SET_SIZE (begin_ptr->as_sym,
4154 sym_ptr->ecoff_sym.asym.value);
4155 #endif
4156 }
4157 else if (begin_type == st_Block
4158 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4159 {
4160 symbolS *begin_sym;
4161
4162 know (as_sym != (symbolS *) NULL);
4163 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4164 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4165 if (S_GET_SEGMENT (as_sym)
4166 != S_GET_SEGMENT (begin_sym))
4167 as_warn (_(".begin/.bend in different segments"));
4168 sym_ptr->ecoff_sym.asym.value =
4169 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4170 }
4171 }
4172
4173 for (f = sym_ptr->forward_ref;
4174 f != (forward_t *) NULL;
4175 f = f->next)
4176 {
4177 know (local);
4178 f->ifd_ptr->data.isym = fil_ptr->file_index;
4179 f->index_ptr->data.rndx.index = isym - ifilesym;
4180 }
4181
4182 if (local)
4183 {
4184 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size)
4185 sym_out = ecoff_add_bytes (buf, bufend,
4186 sym_out,
4187 external_sym_size);
4188 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym,
4189 sym_out);
4190 sym_out += external_sym_size;
4191
4192 sym_ptr->sym_index = isym;
4193
4194 if (sym_ptr->proc_ptr != (proc_t *) NULL
4195 && sym_ptr->proc_ptr->sym == sym_ptr)
4196 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym;
4197
4198 ++isym;
4199 }
4200
4201 /* Record the local symbol index and file number in
4202 case this is an external symbol. Note that this
4203 destroys the asym.index field. */
4204 if (as_sym != (symbolS *) NULL
4205 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr)
4206 {
4207 if ((sym_ptr->ecoff_sym.asym.st == st_Proc
4208 || sym_ptr->ecoff_sym.asym.st == st_StaticProc)
4209 && local)
4210 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1;
4211 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index;
4212
4213 /* Don't try to merge an FDR which has an
4214 external symbol attached to it. */
4215 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym))
4216 fil_ptr->fdr.fMerge = 0;
4217 }
4218 }
4219 }
4220 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase;
4221 }
4222 }
4223
4224 return offset + isym * external_sym_size;
4225 }
4226
4227 /* Swap out the procedure information. */
4228
4229 static unsigned long
4230 ecoff_build_procs (const struct ecoff_debug_swap *backend,
4231 char **buf,
4232 char **bufend,
4233 unsigned long offset)
4234 {
4235 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4236 void (* const swap_pdr_out) (bfd *, const PDR *, void *)
4237 = backend->swap_pdr_out;
4238 char *pdr_out;
4239 long iproc;
4240 vlinks_t *file_link;
4241
4242 pdr_out = *buf + offset;
4243
4244 iproc = 0;
4245
4246 /* The procedures are stored by file. */
4247 for (file_link = file_desc.first;
4248 file_link != (vlinks_t *) NULL;
4249 file_link = file_link->next)
4250 {
4251 int fil_cnt;
4252 efdr_t *fil_ptr;
4253 efdr_t *fil_end;
4254
4255 if (file_link->next == (vlinks_t *) NULL)
4256 fil_cnt = file_desc.objects_last_page;
4257 else
4258 fil_cnt = file_desc.objects_per_page;
4259 fil_ptr = file_link->datum->file;
4260 fil_end = fil_ptr + fil_cnt;
4261 for (; fil_ptr < fil_end; fil_ptr++)
4262 {
4263 vlinks_t *proc_link;
4264 int first;
4265
4266 fil_ptr->fdr.ipdFirst = iproc;
4267 first = 1;
4268 for (proc_link = fil_ptr->procs.first;
4269 proc_link != (vlinks_t *) NULL;
4270 proc_link = proc_link->next)
4271 {
4272 int prc_cnt;
4273 proc_t *proc_ptr;
4274 proc_t *proc_end;
4275
4276 if (proc_link->next == (vlinks_t *) NULL)
4277 prc_cnt = fil_ptr->procs.objects_last_page;
4278 else
4279 prc_cnt = fil_ptr->procs.objects_per_page;
4280 proc_ptr = proc_link->datum->proc;
4281 proc_end = proc_ptr + prc_cnt;
4282 for (; proc_ptr < proc_end; proc_ptr++)
4283 {
4284 symbolS *adr_sym;
4285 unsigned long adr;
4286
4287 adr_sym = proc_ptr->sym->as_sym;
4288 adr = (S_GET_VALUE (adr_sym)
4289 + bfd_section_vma (S_GET_SEGMENT (adr_sym)));
4290 if (first)
4291 {
4292 /* This code used to force the adr of the very
4293 first fdr to be 0. However, the native tools
4294 don't do that, and I can't remember why it
4295 used to work that way, so I took it out. */
4296 fil_ptr->fdr.adr = adr;
4297 first = 0;
4298 }
4299 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr;
4300 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size)
4301 pdr_out = ecoff_add_bytes (buf, bufend,
4302 pdr_out,
4303 external_pdr_size);
4304 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out);
4305 pdr_out += external_pdr_size;
4306 ++iproc;
4307 }
4308 }
4309 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst;
4310 }
4311 }
4312
4313 return offset + iproc * external_pdr_size;
4314 }
4315
4316 /* Swap out the aux information. */
4317
4318 static unsigned long
4319 ecoff_build_aux (const struct ecoff_debug_swap *backend,
4320 char **buf,
4321 char **bufend,
4322 unsigned long offset)
4323 {
4324 int bigendian;
4325 union aux_ext *aux_out;
4326 long iaux;
4327 vlinks_t *file_link;
4328
4329 bigendian = bfd_big_endian (stdoutput);
4330
4331 aux_out = (union aux_ext *) (*buf + offset);
4332
4333 iaux = 0;
4334
4335 /* The aux entries are stored by file. */
4336 for (file_link = file_desc.first;
4337 file_link != (vlinks_t *) NULL;
4338 file_link = file_link->next)
4339 {
4340 int fil_cnt;
4341 efdr_t *fil_ptr;
4342 efdr_t *fil_end;
4343
4344 if (file_link->next == (vlinks_t *) NULL)
4345 fil_cnt = file_desc.objects_last_page;
4346 else
4347 fil_cnt = file_desc.objects_per_page;
4348 fil_ptr = file_link->datum->file;
4349 fil_end = fil_ptr + fil_cnt;
4350 for (; fil_ptr < fil_end; fil_ptr++)
4351 {
4352 vlinks_t *aux_link;
4353
4354 fil_ptr->fdr.fBigendian = bigendian;
4355 fil_ptr->fdr.iauxBase = iaux;
4356 for (aux_link = fil_ptr->aux_syms.first;
4357 aux_link != (vlinks_t *) NULL;
4358 aux_link = aux_link->next)
4359 {
4360 int aux_cnt;
4361 aux_t *aux_ptr;
4362 aux_t *aux_end;
4363
4364 if (aux_link->next == (vlinks_t *) NULL)
4365 aux_cnt = fil_ptr->aux_syms.objects_last_page;
4366 else
4367 aux_cnt = fil_ptr->aux_syms.objects_per_page;
4368 aux_ptr = aux_link->datum->aux;
4369 aux_end = aux_ptr + aux_cnt;
4370 for (; aux_ptr < aux_end; aux_ptr++)
4371 {
4372 if ((unsigned long) (*bufend - (char *) aux_out)
4373 < sizeof (union aux_ext))
4374 aux_out = ((union aux_ext *)
4375 ecoff_add_bytes (buf, bufend,
4376 (char *) aux_out,
4377 sizeof (union aux_ext)));
4378 switch (aux_ptr->type)
4379 {
4380 case aux_tir:
4381 (*backend->swap_tir_out) (bigendian,
4382 &aux_ptr->data.ti,
4383 &aux_out->a_ti);
4384 break;
4385 case aux_rndx:
4386 (*backend->swap_rndx_out) (bigendian,
4387 &aux_ptr->data.rndx,
4388 &aux_out->a_rndx);
4389 break;
4390 case aux_dnLow:
4391 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow,
4392 aux_out);
4393 break;
4394 case aux_dnHigh:
4395 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh,
4396 aux_out);
4397 break;
4398 case aux_isym:
4399 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym,
4400 aux_out);
4401 break;
4402 case aux_iss:
4403 AUX_PUT_ISS (bigendian, aux_ptr->data.iss,
4404 aux_out);
4405 break;
4406 case aux_width:
4407 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width,
4408 aux_out);
4409 break;
4410 case aux_count:
4411 AUX_PUT_COUNT (bigendian, aux_ptr->data.count,
4412 aux_out);
4413 break;
4414 }
4415
4416 ++aux_out;
4417 ++iaux;
4418 }
4419 }
4420 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase;
4421 }
4422 }
4423
4424 return ecoff_padding_adjust (backend, buf, bufend,
4425 offset + iaux * sizeof (union aux_ext),
4426 (char **) NULL);
4427 }
4428
4429 /* Copy out the strings from a varray_t. This returns the number of
4430 bytes copied, rather than the new offset. */
4431
4432 static unsigned long
4433 ecoff_build_strings (char **buf,
4434 char **bufend,
4435 unsigned long offset,
4436 varray_t *vp)
4437 {
4438 unsigned long istr;
4439 char *str_out;
4440 vlinks_t *str_link;
4441
4442 str_out = *buf + offset;
4443
4444 istr = 0;
4445
4446 for (str_link = vp->first;
4447 str_link != (vlinks_t *) NULL;
4448 str_link = str_link->next)
4449 {
4450 unsigned long str_cnt;
4451
4452 if (str_link->next == (vlinks_t *) NULL)
4453 str_cnt = vp->objects_last_page;
4454 else
4455 str_cnt = vp->objects_per_page;
4456
4457 if ((unsigned long)(*bufend - str_out) < str_cnt)
4458 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt);
4459
4460 memcpy (str_out, str_link->datum->byte, str_cnt);
4461 str_out += str_cnt;
4462 istr += str_cnt;
4463 }
4464
4465 return istr;
4466 }
4467
4468 /* Dump out the local strings. */
4469
4470 static unsigned long
4471 ecoff_build_ss (const struct ecoff_debug_swap *backend,
4472 char **buf,
4473 char **bufend,
4474 unsigned long offset)
4475 {
4476 long iss;
4477 vlinks_t *file_link;
4478
4479 iss = 0;
4480
4481 for (file_link = file_desc.first;
4482 file_link != (vlinks_t *) NULL;
4483 file_link = file_link->next)
4484 {
4485 int fil_cnt;
4486 efdr_t *fil_ptr;
4487 efdr_t *fil_end;
4488
4489 if (file_link->next == (vlinks_t *) NULL)
4490 fil_cnt = file_desc.objects_last_page;
4491 else
4492 fil_cnt = file_desc.objects_per_page;
4493 fil_ptr = file_link->datum->file;
4494 fil_end = fil_ptr + fil_cnt;
4495 for (; fil_ptr < fil_end; fil_ptr++)
4496 {
4497 long ss_cnt;
4498
4499 fil_ptr->fdr.issBase = iss;
4500 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss,
4501 &fil_ptr->strings);
4502 fil_ptr->fdr.cbSs = ss_cnt;
4503 iss += ss_cnt;
4504 }
4505 }
4506
4507 return ecoff_padding_adjust (backend, buf, bufend, offset + iss,
4508 (char **) NULL);
4509 }
4510
4511 /* Swap out the file descriptors. */
4512
4513 static unsigned long
4514 ecoff_build_fdr (const struct ecoff_debug_swap *backend,
4515 char **buf,
4516 char **bufend,
4517 unsigned long offset)
4518 {
4519 const bfd_size_type external_fdr_size = backend->external_fdr_size;
4520 void (* const swap_fdr_out) (bfd *, const FDR *, void *)
4521 = backend->swap_fdr_out;
4522 long ifile;
4523 char *fdr_out;
4524 vlinks_t *file_link;
4525
4526 ifile = 0;
4527
4528 fdr_out = *buf + offset;
4529
4530 for (file_link = file_desc.first;
4531 file_link != (vlinks_t *) NULL;
4532 file_link = file_link->next)
4533 {
4534 int fil_cnt;
4535 efdr_t *fil_ptr;
4536 efdr_t *fil_end;
4537
4538 if (file_link->next == (vlinks_t *) NULL)
4539 fil_cnt = file_desc.objects_last_page;
4540 else
4541 fil_cnt = file_desc.objects_per_page;
4542 fil_ptr = file_link->datum->file;
4543 fil_end = fil_ptr + fil_cnt;
4544 for (; fil_ptr < fil_end; fil_ptr++)
4545 {
4546 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size)
4547 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out,
4548 external_fdr_size);
4549 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out);
4550 fdr_out += external_fdr_size;
4551 ++ifile;
4552 }
4553 }
4554
4555 return offset + ifile * external_fdr_size;
4556 }
4557
4558 /* Set up the external symbols. These are supposed to be handled by
4559 the backend. This routine just gets the right information and
4560 calls a backend function to deal with it. */
4561
4562 static void
4563 ecoff_setup_ext (void)
4564 {
4565 symbolS *sym;
4566
4567 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4568 {
4569 if (symbol_get_obj (sym)->ecoff_symbol == NULL)
4570 continue;
4571
4572 /* If this is a local symbol, then force the fields to zero. */
4573 if (! S_IS_EXTERNAL (sym)
4574 && ! S_IS_WEAK (sym)
4575 && S_IS_DEFINED (sym))
4576 {
4577 struct localsym *lsym;
4578
4579 lsym = symbol_get_obj (sym)->ecoff_symbol;
4580 lsym->ecoff_sym.asym.value = 0;
4581 lsym->ecoff_sym.asym.st = (int) st_Nil;
4582 lsym->ecoff_sym.asym.sc = (int) sc_Nil;
4583 lsym->ecoff_sym.asym.index = indexNil;
4584 }
4585
4586 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym);
4587 }
4588 }
4589
4590 /* Build the ECOFF debugging information. */
4591
4592 unsigned long
4593 ecoff_build_debug (HDRR *hdr,
4594 char **bufp,
4595 const struct ecoff_debug_swap *backend)
4596 {
4597 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4598 tag_t *ptag;
4599 tag_t *ptag_next;
4600 efdr_t *fil_ptr;
4601 int end_warning;
4602 efdr_t *hold_file_ptr;
4603 proc_t *hold_proc_ptr;
4604 symbolS *sym;
4605 char *buf;
4606 char *bufend;
4607 unsigned long offset;
4608
4609 /* Make sure we have a file. */
4610 if (first_file == (efdr_t *) NULL)
4611 add_file ((const char *) NULL, 0, 1);
4612
4613 /* Handle any top level tags. */
4614 for (ptag = top_tag_head->first_tag;
4615 ptag != (tag_t *) NULL;
4616 ptag = ptag_next)
4617 {
4618 if (ptag->forward_ref != (forward_t *) NULL)
4619 add_unknown_tag (ptag);
4620
4621 ptag_next = ptag->same_block;
4622 ptag->hash_ptr->tag_ptr = ptag->same_name;
4623 free_tag (ptag);
4624 }
4625
4626 free_thead (top_tag_head);
4627
4628 /* Look through the symbols. Add debugging information for each
4629 symbol that has not already received it. */
4630 hold_file_ptr = cur_file_ptr;
4631 hold_proc_ptr = cur_proc_ptr;
4632 cur_proc_ptr = (proc_t *) NULL;
4633 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4634 {
4635 if (symbol_get_obj (sym)->ecoff_symbol != NULL
4636 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL
4637 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0)
4638 continue;
4639
4640 cur_file_ptr = symbol_get_obj (sym)->ecoff_file;
4641 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym,
4642 (bfd_vma) 0, S_GET_VALUE (sym), indexNil);
4643 }
4644 cur_proc_ptr = hold_proc_ptr;
4645 cur_file_ptr = hold_file_ptr;
4646
4647 /* Output an ending symbol for all the files. We have to do this
4648 here for the last file, so we may as well do it for all of the
4649 files. */
4650 end_warning = 0;
4651 for (fil_ptr = first_file;
4652 fil_ptr != (efdr_t *) NULL;
4653 fil_ptr = fil_ptr->next_file)
4654 {
4655 cur_file_ptr = fil_ptr;
4656 while (cur_file_ptr->cur_scope != (scope_t *) NULL
4657 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL)
4658 {
4659 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev;
4660 if (! end_warning && ! cur_file_ptr->fake)
4661 {
4662 as_warn (_("missing .end or .bend at end of file"));
4663 end_warning = 1;
4664 }
4665 }
4666 if (cur_file_ptr->cur_scope != (scope_t *) NULL)
4667 (void) add_ecoff_symbol ((const char *) NULL,
4668 st_End, sc_Text,
4669 (symbolS *) NULL,
4670 (bfd_vma) 0,
4671 (symint_t) 0,
4672 (symint_t) 0);
4673 }
4674
4675 /* Build the symbolic information. */
4676 offset = 0;
4677 buf = XNEWVEC (char, PAGE_SIZE);
4678 bufend = buf + PAGE_SIZE;
4679
4680 /* Build the line number information. */
4681 hdr->cbLineOffset = offset;
4682 offset = ecoff_build_lineno (backend, &buf, &bufend, offset,
4683 &hdr->ilineMax);
4684 hdr->cbLine = offset - hdr->cbLineOffset;
4685
4686 /* We don't use dense numbers at all. */
4687 hdr->idnMax = 0;
4688 hdr->cbDnOffset = 0;
4689
4690 /* We can't build the PDR table until we have built the symbols,
4691 because a PDR contains a symbol index. However, we set aside
4692 space at this point. */
4693 hdr->ipdMax = proc_cnt;
4694 hdr->cbPdOffset = offset;
4695 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size)
4696 (void) ecoff_add_bytes (&buf, &bufend, buf + offset,
4697 proc_cnt * external_pdr_size);
4698 offset += proc_cnt * external_pdr_size;
4699
4700 /* Build the local symbols. */
4701 hdr->cbSymOffset = offset;
4702 offset = ecoff_build_symbols (backend, &buf, &bufend, offset);
4703 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size;
4704
4705 /* Building the symbols initializes the symbol index in the PDR's.
4706 Now we can swap out the PDR's. */
4707 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset);
4708
4709 /* We don't use optimization symbols. */
4710 hdr->ioptMax = 0;
4711 hdr->cbOptOffset = 0;
4712
4713 /* Swap out the auxiliary type information. */
4714 hdr->cbAuxOffset = offset;
4715 offset = ecoff_build_aux (backend, &buf, &bufend, offset);
4716 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext);
4717
4718 /* Copy out the local strings. */
4719 hdr->cbSsOffset = offset;
4720 offset = ecoff_build_ss (backend, &buf, &bufend, offset);
4721 hdr->issMax = offset - hdr->cbSsOffset;
4722
4723 /* We don't use relative file descriptors. */
4724 hdr->crfd = 0;
4725 hdr->cbRfdOffset = 0;
4726
4727 /* Swap out the file descriptors. */
4728 hdr->cbFdOffset = offset;
4729 offset = ecoff_build_fdr (backend, &buf, &bufend, offset);
4730 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size;
4731
4732 /* Set up the external symbols, which are handled by the BFD back
4733 end. */
4734 hdr->issExtMax = 0;
4735 hdr->cbSsExtOffset = 0;
4736 hdr->iextMax = 0;
4737 hdr->cbExtOffset = 0;
4738 ecoff_setup_ext ();
4739
4740 know ((offset & (backend->debug_align - 1)) == 0);
4741
4742 /* FIXME: This value should be determined from the .verstamp directive,
4743 with reasonable defaults in config files. */
4744 #ifdef TC_ALPHA
4745 hdr->vstamp = 0x030b;
4746 #else
4747 hdr->vstamp = 0x020b;
4748 #endif
4749
4750 *bufp = buf;
4751 return offset;
4752 }
4753 \f
4754 /* Allocate a cluster of pages. */
4755
4756 #ifndef MALLOC_CHECK
4757
4758 static page_type *
4759 allocate_cluster (unsigned long npages)
4760 {
4761 page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE);
4762
4763 #ifdef ECOFF_DEBUG
4764 if (debug > 3)
4765 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value);
4766 #endif
4767
4768 memset (value, 0, npages * PAGE_USIZE);
4769
4770 return value;
4771 }
4772
4773 static page_type *cluster_ptr = NULL;
4774 static unsigned long pages_left = 0;
4775
4776 #endif /* MALLOC_CHECK */
4777
4778 /* Allocate one page (which is initialized to 0). */
4779
4780 static page_type *
4781 allocate_page (void)
4782 {
4783 #ifndef MALLOC_CHECK
4784
4785 if (pages_left == 0)
4786 {
4787 pages_left = MAX_CLUSTER_PAGES;
4788 cluster_ptr = allocate_cluster (pages_left);
4789 }
4790
4791 pages_left--;
4792 return cluster_ptr++;
4793
4794 #else /* MALLOC_CHECK */
4795
4796 page_type *ptr;
4797
4798 ptr = xmalloc (PAGE_USIZE);
4799 memset (ptr, 0, PAGE_USIZE);
4800 return ptr;
4801
4802 #endif /* MALLOC_CHECK */
4803 }
4804 \f
4805 /* Allocate scoping information. */
4806
4807 static scope_t *
4808 allocate_scope (void)
4809 {
4810 scope_t *ptr;
4811 static scope_t initial_scope;
4812
4813 #ifndef MALLOC_CHECK
4814
4815 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4816 if (ptr != (scope_t *) NULL)
4817 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free;
4818 else
4819 {
4820 int unallocated = alloc_counts[(int) alloc_type_scope].unallocated;
4821 page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page;
4822
4823 if (unallocated == 0)
4824 {
4825 unallocated = PAGE_SIZE / sizeof (scope_t);
4826 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page ();
4827 alloc_counts[(int) alloc_type_scope].total_pages++;
4828 }
4829
4830 ptr = &cur_page->scope[--unallocated];
4831 alloc_counts[(int) alloc_type_scope].unallocated = unallocated;
4832 }
4833
4834 #else
4835
4836 ptr = XNEW (scope_t);
4837
4838 #endif
4839
4840 alloc_counts[(int) alloc_type_scope].total_alloc++;
4841 *ptr = initial_scope;
4842 return ptr;
4843 }
4844
4845 /* Free scoping information. */
4846
4847 static void
4848 free_scope (scope_t *ptr)
4849 {
4850 alloc_counts[(int) alloc_type_scope].total_free++;
4851
4852 #ifndef MALLOC_CHECK
4853 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4854 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr;
4855 #else
4856 free ((void *) ptr);
4857 #endif
4858 }
4859 \f
4860 /* Allocate links for pages in a virtual array. */
4861
4862 static vlinks_t *
4863 allocate_vlinks (void)
4864 {
4865 vlinks_t *ptr;
4866 static vlinks_t initial_vlinks;
4867
4868 #ifndef MALLOC_CHECK
4869
4870 int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated;
4871 page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page;
4872
4873 if (unallocated == 0)
4874 {
4875 unallocated = PAGE_SIZE / sizeof (vlinks_t);
4876 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page ();
4877 alloc_counts[(int) alloc_type_vlinks].total_pages++;
4878 }
4879
4880 ptr = &cur_page->vlinks[--unallocated];
4881 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated;
4882
4883 #else
4884
4885 ptr = XNEW (vlinks_t);
4886
4887 #endif
4888
4889 alloc_counts[(int) alloc_type_vlinks].total_alloc++;
4890 *ptr = initial_vlinks;
4891 return ptr;
4892 }
4893 \f
4894 /* Allocate string hash buckets. */
4895
4896 static shash_t *
4897 allocate_shash (void)
4898 {
4899 shash_t *ptr;
4900 static shash_t initial_shash;
4901
4902 #ifndef MALLOC_CHECK
4903
4904 int unallocated = alloc_counts[(int) alloc_type_shash].unallocated;
4905 page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page;
4906
4907 if (unallocated == 0)
4908 {
4909 unallocated = PAGE_SIZE / sizeof (shash_t);
4910 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page ();
4911 alloc_counts[(int) alloc_type_shash].total_pages++;
4912 }
4913
4914 ptr = &cur_page->shash[--unallocated];
4915 alloc_counts[(int) alloc_type_shash].unallocated = unallocated;
4916
4917 #else
4918
4919 ptr = XNEW (shash_t);
4920
4921 #endif
4922
4923 alloc_counts[(int) alloc_type_shash].total_alloc++;
4924 *ptr = initial_shash;
4925 return ptr;
4926 }
4927 \f
4928 /* Allocate type hash buckets. */
4929
4930 static thash_t *
4931 allocate_thash (void)
4932 {
4933 thash_t *ptr;
4934 static thash_t initial_thash;
4935
4936 #ifndef MALLOC_CHECK
4937
4938 int unallocated = alloc_counts[(int) alloc_type_thash].unallocated;
4939 page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page;
4940
4941 if (unallocated == 0)
4942 {
4943 unallocated = PAGE_SIZE / sizeof (thash_t);
4944 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page ();
4945 alloc_counts[(int) alloc_type_thash].total_pages++;
4946 }
4947
4948 ptr = &cur_page->thash[--unallocated];
4949 alloc_counts[(int) alloc_type_thash].unallocated = unallocated;
4950
4951 #else
4952
4953 ptr = XNEW (thash_t);
4954
4955 #endif
4956
4957 alloc_counts[(int) alloc_type_thash].total_alloc++;
4958 *ptr = initial_thash;
4959 return ptr;
4960 }
4961 \f
4962 /* Allocate structure, union, or enum tag information. */
4963
4964 static tag_t *
4965 allocate_tag (void)
4966 {
4967 tag_t *ptr;
4968 static tag_t initial_tag;
4969
4970 #ifndef MALLOC_CHECK
4971
4972 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
4973 if (ptr != (tag_t *) NULL)
4974 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free;
4975 else
4976 {
4977 int unallocated = alloc_counts[(int) alloc_type_tag].unallocated;
4978 page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page;
4979
4980 if (unallocated == 0)
4981 {
4982 unallocated = PAGE_SIZE / sizeof (tag_t);
4983 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page ();
4984 alloc_counts[(int) alloc_type_tag].total_pages++;
4985 }
4986
4987 ptr = &cur_page->tag[--unallocated];
4988 alloc_counts[(int) alloc_type_tag].unallocated = unallocated;
4989 }
4990
4991 #else
4992
4993 ptr = XNEW (tag_t);
4994
4995 #endif
4996
4997 alloc_counts[(int) alloc_type_tag].total_alloc++;
4998 *ptr = initial_tag;
4999 return ptr;
5000 }
5001
5002 /* Free scoping information. */
5003
5004 static void
5005 free_tag (tag_t *ptr)
5006 {
5007 alloc_counts[(int) alloc_type_tag].total_free++;
5008
5009 #ifndef MALLOC_CHECK
5010 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
5011 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr;
5012 #else
5013 free ((PTR_T) ptr);
5014 #endif
5015 }
5016 \f
5017 /* Allocate forward reference to a yet unknown tag. */
5018
5019 static forward_t *
5020 allocate_forward (void)
5021 {
5022 forward_t *ptr;
5023 static forward_t initial_forward;
5024
5025 #ifndef MALLOC_CHECK
5026
5027 int unallocated = alloc_counts[(int) alloc_type_forward].unallocated;
5028 page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page;
5029
5030 if (unallocated == 0)
5031 {
5032 unallocated = PAGE_SIZE / sizeof (forward_t);
5033 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page ();
5034 alloc_counts[(int) alloc_type_forward].total_pages++;
5035 }
5036
5037 ptr = &cur_page->forward[--unallocated];
5038 alloc_counts[(int) alloc_type_forward].unallocated = unallocated;
5039
5040 #else
5041
5042 ptr = XNEW (forward_t);
5043
5044 #endif
5045
5046 alloc_counts[(int) alloc_type_forward].total_alloc++;
5047 *ptr = initial_forward;
5048 return ptr;
5049 }
5050 \f
5051 /* Allocate head of type hash list. */
5052
5053 static thead_t *
5054 allocate_thead (void)
5055 {
5056 thead_t *ptr;
5057 static thead_t initial_thead;
5058
5059 #ifndef MALLOC_CHECK
5060
5061 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5062 if (ptr != (thead_t *) NULL)
5063 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free;
5064 else
5065 {
5066 int unallocated = alloc_counts[(int) alloc_type_thead].unallocated;
5067 page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page;
5068
5069 if (unallocated == 0)
5070 {
5071 unallocated = PAGE_SIZE / sizeof (thead_t);
5072 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page ();
5073 alloc_counts[(int) alloc_type_thead].total_pages++;
5074 }
5075
5076 ptr = &cur_page->thead[--unallocated];
5077 alloc_counts[(int) alloc_type_thead].unallocated = unallocated;
5078 }
5079
5080 #else
5081
5082 ptr = XNEW (thead_t);
5083
5084 #endif
5085
5086 alloc_counts[(int) alloc_type_thead].total_alloc++;
5087 *ptr = initial_thead;
5088 return ptr;
5089 }
5090
5091 /* Free scoping information. */
5092
5093 static void
5094 free_thead (thead_t *ptr)
5095 {
5096 alloc_counts[(int) alloc_type_thead].total_free++;
5097
5098 #ifndef MALLOC_CHECK
5099 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5100 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr;
5101 #else
5102 free ((PTR_T) ptr);
5103 #endif
5104 }
5105 \f
5106 static lineno_list_t *
5107 allocate_lineno_list (void)
5108 {
5109 lineno_list_t *ptr;
5110 static lineno_list_t initial_lineno_list;
5111
5112 #ifndef MALLOC_CHECK
5113
5114 int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated;
5115 page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page;
5116
5117 if (unallocated == 0)
5118 {
5119 unallocated = PAGE_SIZE / sizeof (lineno_list_t);
5120 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page ();
5121 alloc_counts[(int) alloc_type_lineno].total_pages++;
5122 }
5123
5124 ptr = &cur_page->lineno[--unallocated];
5125 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated;
5126
5127 #else
5128
5129 ptr = XNEW (lineno_list_t);
5130
5131 #endif
5132
5133 alloc_counts[(int) alloc_type_lineno].total_alloc++;
5134 *ptr = initial_lineno_list;
5135 return ptr;
5136 }
5137
5138 void
5139 ecoff_set_gp_prolog_size (int sz)
5140 {
5141 if (cur_proc_ptr == 0)
5142 return;
5143
5144 cur_proc_ptr->pdr.gp_prologue = sz;
5145 if (cur_proc_ptr->pdr.gp_prologue != sz)
5146 {
5147 as_warn (_("GP prologue size exceeds field size, using 0 instead"));
5148 cur_proc_ptr->pdr.gp_prologue = 0;
5149 }
5150
5151 cur_proc_ptr->pdr.gp_used = 1;
5152 }
5153
5154 int
5155 ecoff_no_current_file (void)
5156 {
5157 return cur_file_ptr == (efdr_t *) NULL;
5158 }
5159
5160 void
5161 ecoff_generate_asm_lineno (void)
5162 {
5163 unsigned int lineno;
5164 const char *filename;
5165 lineno_list_t *list;
5166
5167 filename = as_where (&lineno);
5168
5169 if (current_stabs_filename == (char *) NULL
5170 || filename_cmp (current_stabs_filename, filename))
5171 add_file (filename, 0, 1);
5172
5173 list = allocate_lineno_list ();
5174
5175 list->next = (lineno_list_t *) NULL;
5176 list->file = cur_file_ptr;
5177 list->proc = cur_proc_ptr;
5178 list->frag = frag_now;
5179 list->paddr = frag_now_fix ();
5180 list->lineno = lineno;
5181
5182 /* We don't want to merge files which have line numbers. */
5183 cur_file_ptr->fdr.fMerge = 0;
5184
5185 /* A .loc directive will sometimes appear before a .ent directive,
5186 which means that cur_proc_ptr will be NULL here. Arrange to
5187 patch this up. */
5188 if (cur_proc_ptr == (proc_t *) NULL)
5189 {
5190 lineno_list_t **pl;
5191
5192 pl = &noproc_lineno;
5193 while (*pl != (lineno_list_t *) NULL)
5194 pl = &(*pl)->next;
5195 *pl = list;
5196 }
5197 else
5198 {
5199 last_lineno = list;
5200 *last_lineno_ptr = list;
5201 last_lineno_ptr = &list->next;
5202 }
5203 }
5204
5205 #else
5206
5207 void
5208 ecoff_generate_asm_lineno (void)
5209 {
5210 }
5211
5212 #endif /* ECOFF_DEBUGGING */
The GNU Binutils are a collection of binary tools.