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[thirdparty/binutils-gdb.git] / gas / ecoff.c
1 /* ECOFF debugging support.
2 Copyright (C) 1993-2016 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 indexs 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 of storage classes as an enumeration for better
622 debugging. */
623
624 typedef enum sc {
625 sc_Nil = scNil, /* no storage class */
626 sc_Text = scText, /* text symbol */
627 sc_Data = scData, /* initialized data symbol */
628 sc_Bss = scBss, /* un-initialized data symbol */
629 sc_Register = scRegister, /* value of symbol is register number */
630 sc_Abs = scAbs, /* value of symbol is absolute */
631 sc_Undefined = scUndefined, /* who knows? */
632 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */
633 sc_Bits = scBits, /* this is a bit field */
634 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */
635 sc_RegImage = scRegImage, /* register value saved on stack */
636 sc_Info = scInfo, /* symbol contains debugger information */
637 sc_UserStruct = scUserStruct, /* addr in struct user for current process */
638 sc_SData = scSData, /* load time only small data */
639 sc_SBss = scSBss, /* load time only small common */
640 sc_RData = scRData, /* load time only read only data */
641 sc_Var = scVar, /* Var parameter (fortran,pascal) */
642 sc_Common = scCommon, /* common variable */
643 sc_SCommon = scSCommon, /* small common */
644 sc_VarRegister = scVarRegister, /* Var parameter in a register */
645 sc_Variant = scVariant, /* Variant record */
646 sc_SUndefined = scSUndefined, /* small undefined(external) data */
647 sc_Init = scInit, /* .init section symbol */
648 sc_Max = scMax /* Max storage class+1 */
649 } sc_t;
650
651 /* Redefinition of symbol type. */
652
653 typedef enum st {
654 st_Nil = stNil, /* Nuthin' special */
655 st_Global = stGlobal, /* external symbol */
656 st_Static = stStatic, /* static */
657 st_Param = stParam, /* procedure argument */
658 st_Local = stLocal, /* local variable */
659 st_Label = stLabel, /* label */
660 st_Proc = stProc, /* " " Procedure */
661 st_Block = stBlock, /* beginning of block */
662 st_End = stEnd, /* end (of anything) */
663 st_Member = stMember, /* member (of anything - struct/union/enum */
664 st_Typedef = stTypedef, /* type definition */
665 st_File = stFile, /* file name */
666 st_RegReloc = stRegReloc, /* register relocation */
667 st_Forward = stForward, /* forwarding address */
668 st_StaticProc = stStaticProc, /* load time only static procs */
669 st_Constant = stConstant, /* const */
670 st_Str = stStr, /* string */
671 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */
672 st_Expr = stExpr, /* 2+2 vs. 4 */
673 st_Type = stType, /* post-coercion SER */
674 st_Max = stMax /* max type+1 */
675 } st_t;
676
677 /* Redefinition of type qualifiers. */
678
679 typedef enum tq {
680 tq_Nil = tqNil, /* bt is what you see */
681 tq_Ptr = tqPtr, /* pointer */
682 tq_Proc = tqProc, /* procedure */
683 tq_Array = tqArray, /* duh */
684 tq_Far = tqFar, /* longer addressing - 8086/8 land */
685 tq_Vol = tqVol, /* volatile */
686 tq_Max = tqMax /* Max type qualifier+1 */
687 } tq_t;
688
689 /* Redefinition of basic types. */
690
691 typedef enum bt {
692 bt_Nil = btNil, /* undefined */
693 bt_Adr = btAdr, /* address - integer same size as pointer */
694 bt_Char = btChar, /* character */
695 bt_UChar = btUChar, /* unsigned character */
696 bt_Short = btShort, /* short */
697 bt_UShort = btUShort, /* unsigned short */
698 bt_Int = btInt, /* int */
699 bt_UInt = btUInt, /* unsigned int */
700 bt_Long = btLong, /* long */
701 bt_ULong = btULong, /* unsigned long */
702 bt_Float = btFloat, /* float (real) */
703 bt_Double = btDouble, /* Double (real) */
704 bt_Struct = btStruct, /* Structure (Record) */
705 bt_Union = btUnion, /* Union (variant) */
706 bt_Enum = btEnum, /* Enumerated */
707 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */
708 bt_Range = btRange, /* subrange of int */
709 bt_Set = btSet, /* pascal sets */
710 bt_Complex = btComplex, /* fortran complex */
711 bt_DComplex = btDComplex, /* fortran double complex */
712 bt_Indirect = btIndirect, /* forward or unnamed typedef */
713 bt_FixedDec = btFixedDec, /* Fixed Decimal */
714 bt_FloatDec = btFloatDec, /* Float Decimal */
715 bt_String = btString, /* Varying Length Character String */
716 bt_Bit = btBit, /* Aligned Bit String */
717 bt_Picture = btPicture, /* Picture */
718 bt_Void = btVoid, /* Void */
719 bt_Max = btMax /* Max basic type+1 */
720 } bt_t;
721
722 #define N_TQ itqMax
723
724 /* States for whether to hash type or not. */
725 typedef enum hash_state {
726 hash_no = 0, /* Don't hash type */
727 hash_yes = 1, /* OK to hash type, or use previous hash */
728 hash_record = 2 /* OK to record hash, but don't use prev. */
729 } hash_state_t;
730
731 /* Types of different sized allocation requests. */
732 enum alloc_type {
733 alloc_type_none, /* dummy value */
734 alloc_type_scope, /* nested scopes linked list */
735 alloc_type_vlinks, /* glue linking pages in varray */
736 alloc_type_shash, /* string hash element */
737 alloc_type_thash, /* type hash element */
738 alloc_type_tag, /* struct/union/tag element */
739 alloc_type_forward, /* element to hold unknown tag */
740 alloc_type_thead, /* head of type hash list */
741 alloc_type_varray, /* general varray allocation */
742 alloc_type_lineno, /* line number list */
743 alloc_type_last /* last+1 element for array bounds */
744 };
745
746 /* Types of auxiliary type information. */
747 enum aux_type {
748 aux_tir, /* TIR type information */
749 aux_rndx, /* relative index into symbol table */
750 aux_dnLow, /* low dimension */
751 aux_dnHigh, /* high dimension */
752 aux_isym, /* symbol table index (end of proc) */
753 aux_iss, /* index into string space (not used) */
754 aux_width, /* width for non-default sized struc fields */
755 aux_count /* count of ranges for variant arm */
756 };
757 \f
758 /* Structures to provide n-number of virtual arrays, each of which can
759 grow linearly, and which are written in the object file as
760 sequential pages. On systems with a BSD malloc, the
761 MAX_CLUSTER_PAGES should be 1 less than a power of two, since
762 malloc adds it's overhead, and rounds up to the next power of 2.
763 Pages are linked together via a linked list.
764
765 If PAGE_SIZE is > 4096, the string length in the shash_t structure
766 can't be represented (assuming there are strings > 4096 bytes). */
767
768 /* FIXME: Yes, there can be such strings while emitting C++ class debug
769 info. Templates are the offender here, the test case in question
770 having a mangled class name of
771
772 t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\
773 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey
774
775 Repeat that a couple dozen times while listing the class members and
776 you've got strings over 4k. Hack around this for now by increasing
777 the page size. A proper solution would abandon this structure scheme
778 certainly for very large strings, and possibly entirely. */
779
780 #ifndef PAGE_SIZE
781 #define PAGE_SIZE (8*1024) /* size of varray pages */
782 #endif
783
784 #define PAGE_USIZE ((unsigned long) PAGE_SIZE)
785
786 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */
787 #define MAX_CLUSTER_PAGES 63
788 #endif
789
790 /* Linked list connecting separate page allocations. */
791 typedef struct vlinks {
792 struct vlinks *prev; /* previous set of pages */
793 struct vlinks *next; /* next set of pages */
794 union page *datum; /* start of page */
795 unsigned long start_index; /* starting index # of page */
796 } vlinks_t;
797
798 /* Virtual array header. */
799 typedef struct varray {
800 vlinks_t *first; /* first page link */
801 vlinks_t *last; /* last page link */
802 unsigned long num_allocated; /* # objects allocated */
803 unsigned short object_size; /* size in bytes of each object */
804 unsigned short objects_per_page; /* # objects that can fit on a page */
805 unsigned short objects_last_page; /* # objects allocated on last page */
806 } varray_t;
807
808 #ifndef MALLOC_CHECK
809 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type))
810 #else
811 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE)
812 #endif
813
814 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \
815 (vlinks_t *)0, /* first */ \
816 (vlinks_t *)0, /* last */ \
817 0, /* num_allocated */ \
818 sizeof (type), /* object_size */ \
819 OBJECTS_PER_PAGE (type), /* objects_per_page */ \
820 OBJECTS_PER_PAGE (type), /* objects_last_page */ \
821 }
822
823 /* Master type for indexes within the symbol table. */
824 typedef unsigned long symint_t;
825
826 /* Linked list support for nested scopes (file, block, structure, etc.). */
827 typedef struct scope {
828 struct scope *prev; /* previous scope level */
829 struct scope *free; /* free list pointer */
830 struct localsym *lsym; /* pointer to local symbol node */
831 st_t type; /* type of the node */
832 } scope_t;
833
834 /* For a local symbol we store a gas symbol as well as the debugging
835 information we generate. The gas symbol will be NULL if this is
836 only a debugging symbol. */
837 typedef struct localsym {
838 const char *name; /* symbol name */
839 symbolS *as_sym; /* symbol as seen by gas */
840 bfd_vma addend; /* addend to as_sym value */
841 struct efdr *file_ptr; /* file pointer */
842 struct ecoff_proc *proc_ptr; /* proc pointer */
843 struct localsym *begin_ptr; /* symbol at start of block */
844 struct ecoff_aux *index_ptr; /* index value to be filled in */
845 struct forward *forward_ref; /* forward references to this symbol */
846 long sym_index; /* final symbol index */
847 EXTR ecoff_sym; /* ECOFF debugging symbol */
848 } localsym_t;
849
850 /* For aux information we keep the type and the data. */
851 typedef struct ecoff_aux {
852 enum aux_type type; /* aux type */
853 AUXU data; /* aux data */
854 } aux_t;
855
856 /* For a procedure we store the gas symbol as well as the PDR
857 debugging information. */
858 typedef struct ecoff_proc {
859 localsym_t *sym; /* associated symbol */
860 PDR pdr; /* ECOFF debugging info */
861 } proc_t;
862
863 /* Number of proc_t structures allocated. */
864 static unsigned long proc_cnt;
865
866 /* Forward reference list for tags referenced, but not yet defined. */
867 typedef struct forward {
868 struct forward *next; /* next forward reference */
869 struct forward *free; /* free list pointer */
870 aux_t *ifd_ptr; /* pointer to store file index */
871 aux_t *index_ptr; /* pointer to store symbol index */
872 } forward_t;
873
874 /* Linked list support for tags. The first tag in the list is always
875 the current tag for that block. */
876 typedef struct tag {
877 struct tag *free; /* free list pointer */
878 struct shash *hash_ptr; /* pointer to the hash table head */
879 struct tag *same_name; /* tag with same name in outer scope */
880 struct tag *same_block; /* next tag defined in the same block. */
881 struct forward *forward_ref; /* list of forward references */
882 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
883 symint_t ifd; /* file # tag defined in */
884 localsym_t *sym; /* file's local symbols */
885 } tag_t;
886
887 /* Head of a block's linked list of tags. */
888 typedef struct thead {
889 struct thead *prev; /* previous block */
890 struct thead *free; /* free list pointer */
891 struct tag *first_tag; /* first tag in block defined */
892 } thead_t;
893
894 /* Union containing pointers to each the small structures which are freed up. */
895 typedef union small_free {
896 scope_t *f_scope; /* scope structure */
897 thead_t *f_thead; /* tag head structure */
898 tag_t *f_tag; /* tag element structure */
899 forward_t *f_forward; /* forward tag reference */
900 } small_free_t;
901
902 /* String hash table entry. */
903
904 typedef struct shash {
905 char *string; /* string we are hashing */
906 symint_t indx; /* index within string table */
907 EXTR *esym_ptr; /* global symbol pointer */
908 localsym_t *sym_ptr; /* local symbol pointer */
909 localsym_t *end_ptr; /* symbol pointer to end block */
910 tag_t *tag_ptr; /* tag pointer */
911 proc_t *proc_ptr; /* procedure descriptor pointer */
912 } shash_t;
913
914 /* Type hash table support. The size of the hash table must fit
915 within a page with the other extended file descriptor information.
916 Because unique types which are hashed are fewer in number than
917 strings, we use a smaller hash value. */
918
919 #define HASHBITS 30
920
921 #ifndef THASH_SIZE
922 #define THASH_SIZE 113
923 #endif
924
925 typedef struct thash {
926 struct thash *next; /* next hash value */
927 AUXU type; /* type we are hashing */
928 symint_t indx; /* index within string table */
929 } thash_t;
930
931 /* Extended file descriptor that contains all of the support necessary
932 to add things to each file separately. */
933 typedef struct efdr {
934 FDR fdr; /* File header to be written out */
935 FDR *orig_fdr; /* original file header */
936 char *name; /* filename */
937 int fake; /* whether this is faked .file */
938 symint_t void_type; /* aux. pointer to 'void' type */
939 symint_t int_type; /* aux. pointer to 'int' type */
940 scope_t *cur_scope; /* current nested scopes */
941 symint_t file_index; /* current file number */
942 int nested_scopes; /* # nested scopes */
943 varray_t strings; /* local strings */
944 varray_t symbols; /* local symbols */
945 varray_t procs; /* procedures */
946 varray_t aux_syms; /* auxiliary symbols */
947 struct efdr *next_file; /* next file descriptor */
948 /* string/type hash tables */
949 struct hash_control *str_hash; /* string hash table */
950 thash_t *thash_head[THASH_SIZE];
951 } efdr_t;
952
953 /* Pre-initialized extended file structure. */
954 static const efdr_t init_file = {
955 { /* FDR structure */
956 0, /* adr: memory address of beginning of file */
957 0, /* rss: file name (of source, if known) */
958 0, /* issBase: file's string space */
959 0, /* cbSs: number of bytes in the ss */
960 0, /* isymBase: beginning of symbols */
961 0, /* csym: count file's of symbols */
962 0, /* ilineBase: file's line symbols */
963 0, /* cline: count of file's line symbols */
964 0, /* ioptBase: file's optimization entries */
965 0, /* copt: count of file's optimization entries */
966 0, /* ipdFirst: start of procedures for this file */
967 0, /* cpd: count of procedures for this file */
968 0, /* iauxBase: file's auxiliary entries */
969 0, /* caux: count of file's auxiliary entries */
970 0, /* rfdBase: index into the file indirect table */
971 0, /* crfd: count file indirect entries */
972 langC, /* lang: language for this file */
973 1, /* fMerge: whether this file can be merged */
974 0, /* fReadin: true if read in (not just created) */
975 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */
976 GLEVEL_2, /* glevel: level this file was compiled with */
977 0, /* reserved: reserved for future use */
978 0, /* cbLineOffset: byte offset from header for this file ln's */
979 0, /* cbLine: size of lines for this file */
980 },
981
982 (FDR *)0, /* orig_fdr: original file header pointer */
983 (char *)0, /* name: pointer to filename */
984 0, /* fake: whether this is a faked .file */
985 0, /* void_type: ptr to aux node for void type */
986 0, /* int_type: ptr to aux node for int type */
987 (scope_t *)0, /* cur_scope: current scope being processed */
988 0, /* file_index: current file # */
989 0, /* nested_scopes: # nested scopes */
990 INIT_VARRAY (char), /* strings: local string varray */
991 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */
992 INIT_VARRAY (proc_t), /* procs: procedure varray */
993 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */
994
995 (struct efdr *)0, /* next_file: next file structure */
996
997 (struct hash_control *)0, /* str_hash: string hash table */
998 { 0 }, /* thash_head: type hash table */
999 };
1000
1001 static efdr_t *first_file; /* first file descriptor */
1002 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */
1003
1004 /* Line number information is kept in a list until the assembly is
1005 finished. */
1006 typedef struct lineno_list {
1007 struct lineno_list *next; /* next element in list */
1008 efdr_t *file; /* file this line is in */
1009 proc_t *proc; /* procedure this line is in */
1010 fragS *frag; /* fragment this line number is in */
1011 unsigned long paddr; /* offset within fragment */
1012 long lineno; /* actual line number */
1013 } lineno_list_t;
1014
1015 static lineno_list_t *first_lineno;
1016 static lineno_list_t *last_lineno;
1017 static lineno_list_t **last_lineno_ptr = &first_lineno;
1018
1019 /* Sometimes there will be some .loc statements before a .ent. We
1020 keep them in this list so that we can fill in the procedure pointer
1021 after we see the .ent. */
1022 static lineno_list_t *noproc_lineno;
1023
1024 /* Union of various things that are held in pages. */
1025 typedef union page {
1026 char byte [ PAGE_SIZE ];
1027 unsigned char ubyte [ PAGE_SIZE ];
1028 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ];
1029 FDR ofile [ PAGE_SIZE / sizeof (FDR) ];
1030 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ];
1031 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ];
1032 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ];
1033 DNR dense [ PAGE_SIZE / sizeof (DNR) ];
1034 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ];
1035 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ];
1036 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ];
1037 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ];
1038 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ];
1039 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ];
1040 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ];
1041 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ];
1042 } page_type;
1043
1044 /* Structure holding allocation information for small sized structures. */
1045 typedef struct alloc_info {
1046 char *alloc_name; /* name of this allocation type (must be first) */
1047 page_type *cur_page; /* current page being allocated from */
1048 small_free_t free_list; /* current free list if any */
1049 int unallocated; /* number of elements unallocated on page */
1050 int total_alloc; /* total number of allocations */
1051 int total_free; /* total number of frees */
1052 int total_pages; /* total number of pages allocated */
1053 } alloc_info_t;
1054
1055 /* Type information collected together. */
1056 typedef struct type_info {
1057 bt_t basic_type; /* basic type */
1058 int orig_type; /* original COFF-based type */
1059 int num_tq; /* # type qualifiers */
1060 int num_dims; /* # dimensions */
1061 int num_sizes; /* # sizes */
1062 int extra_sizes; /* # extra sizes not tied with dims */
1063 tag_t * tag_ptr; /* tag pointer */
1064 int bitfield; /* symbol is a bitfield */
1065 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/
1066 symint_t dimensions [N_TQ]; /* dimensions for each array */
1067 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of
1068 struct/union/enum + bitfield size */
1069 } type_info_t;
1070
1071 /* Pre-initialized type_info struct. */
1072 static const type_info_t type_info_init = {
1073 bt_Nil, /* basic type */
1074 T_NULL, /* original COFF-based type */
1075 0, /* # type qualifiers */
1076 0, /* # dimensions */
1077 0, /* # sizes */
1078 0, /* sizes not tied with dims */
1079 NULL, /* ptr to tag */
1080 0, /* bitfield */
1081 { /* type qualifiers */
1082 tq_Nil,
1083 tq_Nil,
1084 tq_Nil,
1085 tq_Nil,
1086 tq_Nil,
1087 tq_Nil,
1088 },
1089 { /* dimensions */
1090 0,
1091 0,
1092 0,
1093 0,
1094 0,
1095 0
1096 },
1097 { /* sizes */
1098 0,
1099 0,
1100 0,
1101 0,
1102 0,
1103 0,
1104 0,
1105 0,
1106 },
1107 };
1108
1109 /* Global hash table for the tags table and global table for file
1110 descriptors. */
1111
1112 static varray_t file_desc = INIT_VARRAY (efdr_t);
1113
1114 static struct hash_control *tag_hash;
1115
1116 /* Static types for int and void. Also, remember the last function's
1117 type (which is set up when we encounter the declaration for the
1118 function, and used when the end block for the function is emitted. */
1119
1120 static type_info_t int_type_info;
1121 static type_info_t void_type_info;
1122 static type_info_t last_func_type_info;
1123 static symbolS *last_func_sym_value;
1124
1125 /* Convert COFF basic type to ECOFF basic type. The T_NULL type
1126 really should use bt_Void, but this causes the current ecoff GDB to
1127 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS
1128 2.0) doesn't understand it, even though the compiler generates it.
1129 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler
1130 suite, but for now go with what works.
1131
1132 It would make sense for the .type and .scl directives to use the
1133 ECOFF numbers directly, rather than using the COFF numbers and
1134 mapping them. Unfortunately, this is historically what mips-tfile
1135 expects, and changing gcc now would be a considerable pain (the
1136 native compiler generates debugging information internally, rather
1137 than via the assembler, so it will never use .type or .scl). */
1138
1139 static const bt_t map_coff_types[] = {
1140 bt_Nil, /* T_NULL */
1141 bt_Nil, /* T_ARG */
1142 bt_Char, /* T_CHAR */
1143 bt_Short, /* T_SHORT */
1144 bt_Int, /* T_INT */
1145 bt_Long, /* T_LONG */
1146 bt_Float, /* T_FLOAT */
1147 bt_Double, /* T_DOUBLE */
1148 bt_Struct, /* T_STRUCT */
1149 bt_Union, /* T_UNION */
1150 bt_Enum, /* T_ENUM */
1151 bt_Enum, /* T_MOE */
1152 bt_UChar, /* T_UCHAR */
1153 bt_UShort, /* T_USHORT */
1154 bt_UInt, /* T_UINT */
1155 bt_ULong /* T_ULONG */
1156 };
1157
1158 /* Convert COFF storage class to ECOFF storage class. */
1159 static const sc_t map_coff_storage[] = {
1160 sc_Nil, /* 0: C_NULL */
1161 sc_Abs, /* 1: C_AUTO auto var */
1162 sc_Undefined, /* 2: C_EXT external */
1163 sc_Data, /* 3: C_STAT static */
1164 sc_Register, /* 4: C_REG register */
1165 sc_Undefined, /* 5: C_EXTDEF ??? */
1166 sc_Text, /* 6: C_LABEL label */
1167 sc_Text, /* 7: C_ULABEL user label */
1168 sc_Info, /* 8: C_MOS member of struct */
1169 sc_Abs, /* 9: C_ARG argument */
1170 sc_Info, /* 10: C_STRTAG struct tag */
1171 sc_Info, /* 11: C_MOU member of union */
1172 sc_Info, /* 12: C_UNTAG union tag */
1173 sc_Info, /* 13: C_TPDEF typedef */
1174 sc_Data, /* 14: C_USTATIC ??? */
1175 sc_Info, /* 15: C_ENTAG enum tag */
1176 sc_Info, /* 16: C_MOE member of enum */
1177 sc_Register, /* 17: C_REGPARM register parameter */
1178 sc_Bits, /* 18; C_FIELD bitfield */
1179 sc_Nil, /* 19 */
1180 sc_Nil, /* 20 */
1181 sc_Nil, /* 21 */
1182 sc_Nil, /* 22 */
1183 sc_Nil, /* 23 */
1184 sc_Nil, /* 24 */
1185 sc_Nil, /* 25 */
1186 sc_Nil, /* 26 */
1187 sc_Nil, /* 27 */
1188 sc_Nil, /* 28 */
1189 sc_Nil, /* 29 */
1190 sc_Nil, /* 30 */
1191 sc_Nil, /* 31 */
1192 sc_Nil, /* 32 */
1193 sc_Nil, /* 33 */
1194 sc_Nil, /* 34 */
1195 sc_Nil, /* 35 */
1196 sc_Nil, /* 36 */
1197 sc_Nil, /* 37 */
1198 sc_Nil, /* 38 */
1199 sc_Nil, /* 39 */
1200 sc_Nil, /* 40 */
1201 sc_Nil, /* 41 */
1202 sc_Nil, /* 42 */
1203 sc_Nil, /* 43 */
1204 sc_Nil, /* 44 */
1205 sc_Nil, /* 45 */
1206 sc_Nil, /* 46 */
1207 sc_Nil, /* 47 */
1208 sc_Nil, /* 48 */
1209 sc_Nil, /* 49 */
1210 sc_Nil, /* 50 */
1211 sc_Nil, /* 51 */
1212 sc_Nil, /* 52 */
1213 sc_Nil, /* 53 */
1214 sc_Nil, /* 54 */
1215 sc_Nil, /* 55 */
1216 sc_Nil, /* 56 */
1217 sc_Nil, /* 57 */
1218 sc_Nil, /* 58 */
1219 sc_Nil, /* 59 */
1220 sc_Nil, /* 60 */
1221 sc_Nil, /* 61 */
1222 sc_Nil, /* 62 */
1223 sc_Nil, /* 63 */
1224 sc_Nil, /* 64 */
1225 sc_Nil, /* 65 */
1226 sc_Nil, /* 66 */
1227 sc_Nil, /* 67 */
1228 sc_Nil, /* 68 */
1229 sc_Nil, /* 69 */
1230 sc_Nil, /* 70 */
1231 sc_Nil, /* 71 */
1232 sc_Nil, /* 72 */
1233 sc_Nil, /* 73 */
1234 sc_Nil, /* 74 */
1235 sc_Nil, /* 75 */
1236 sc_Nil, /* 76 */
1237 sc_Nil, /* 77 */
1238 sc_Nil, /* 78 */
1239 sc_Nil, /* 79 */
1240 sc_Nil, /* 80 */
1241 sc_Nil, /* 81 */
1242 sc_Nil, /* 82 */
1243 sc_Nil, /* 83 */
1244 sc_Nil, /* 84 */
1245 sc_Nil, /* 85 */
1246 sc_Nil, /* 86 */
1247 sc_Nil, /* 87 */
1248 sc_Nil, /* 88 */
1249 sc_Nil, /* 89 */
1250 sc_Nil, /* 90 */
1251 sc_Nil, /* 91 */
1252 sc_Nil, /* 92 */
1253 sc_Nil, /* 93 */
1254 sc_Nil, /* 94 */
1255 sc_Nil, /* 95 */
1256 sc_Nil, /* 96 */
1257 sc_Nil, /* 97 */
1258 sc_Nil, /* 98 */
1259 sc_Nil, /* 99 */
1260 sc_Text, /* 100: C_BLOCK block start/end */
1261 sc_Text, /* 101: C_FCN function start/end */
1262 sc_Info, /* 102: C_EOS end of struct/union/enum */
1263 sc_Nil, /* 103: C_FILE file start */
1264 sc_Nil, /* 104: C_LINE line number */
1265 sc_Nil, /* 105: C_ALIAS combined type info */
1266 sc_Nil, /* 106: C_HIDDEN ??? */
1267 };
1268
1269 /* Convert COFF storage class to ECOFF symbol type. */
1270 static const st_t map_coff_sym_type[] = {
1271 st_Nil, /* 0: C_NULL */
1272 st_Local, /* 1: C_AUTO auto var */
1273 st_Global, /* 2: C_EXT external */
1274 st_Static, /* 3: C_STAT static */
1275 st_Local, /* 4: C_REG register */
1276 st_Global, /* 5: C_EXTDEF ??? */
1277 st_Label, /* 6: C_LABEL label */
1278 st_Label, /* 7: C_ULABEL user label */
1279 st_Member, /* 8: C_MOS member of struct */
1280 st_Param, /* 9: C_ARG argument */
1281 st_Block, /* 10: C_STRTAG struct tag */
1282 st_Member, /* 11: C_MOU member of union */
1283 st_Block, /* 12: C_UNTAG union tag */
1284 st_Typedef, /* 13: C_TPDEF typedef */
1285 st_Static, /* 14: C_USTATIC ??? */
1286 st_Block, /* 15: C_ENTAG enum tag */
1287 st_Member, /* 16: C_MOE member of enum */
1288 st_Param, /* 17: C_REGPARM register parameter */
1289 st_Member, /* 18; C_FIELD bitfield */
1290 st_Nil, /* 19 */
1291 st_Nil, /* 20 */
1292 st_Nil, /* 21 */
1293 st_Nil, /* 22 */
1294 st_Nil, /* 23 */
1295 st_Nil, /* 24 */
1296 st_Nil, /* 25 */
1297 st_Nil, /* 26 */
1298 st_Nil, /* 27 */
1299 st_Nil, /* 28 */
1300 st_Nil, /* 29 */
1301 st_Nil, /* 30 */
1302 st_Nil, /* 31 */
1303 st_Nil, /* 32 */
1304 st_Nil, /* 33 */
1305 st_Nil, /* 34 */
1306 st_Nil, /* 35 */
1307 st_Nil, /* 36 */
1308 st_Nil, /* 37 */
1309 st_Nil, /* 38 */
1310 st_Nil, /* 39 */
1311 st_Nil, /* 40 */
1312 st_Nil, /* 41 */
1313 st_Nil, /* 42 */
1314 st_Nil, /* 43 */
1315 st_Nil, /* 44 */
1316 st_Nil, /* 45 */
1317 st_Nil, /* 46 */
1318 st_Nil, /* 47 */
1319 st_Nil, /* 48 */
1320 st_Nil, /* 49 */
1321 st_Nil, /* 50 */
1322 st_Nil, /* 51 */
1323 st_Nil, /* 52 */
1324 st_Nil, /* 53 */
1325 st_Nil, /* 54 */
1326 st_Nil, /* 55 */
1327 st_Nil, /* 56 */
1328 st_Nil, /* 57 */
1329 st_Nil, /* 58 */
1330 st_Nil, /* 59 */
1331 st_Nil, /* 60 */
1332 st_Nil, /* 61 */
1333 st_Nil, /* 62 */
1334 st_Nil, /* 63 */
1335 st_Nil, /* 64 */
1336 st_Nil, /* 65 */
1337 st_Nil, /* 66 */
1338 st_Nil, /* 67 */
1339 st_Nil, /* 68 */
1340 st_Nil, /* 69 */
1341 st_Nil, /* 70 */
1342 st_Nil, /* 71 */
1343 st_Nil, /* 72 */
1344 st_Nil, /* 73 */
1345 st_Nil, /* 74 */
1346 st_Nil, /* 75 */
1347 st_Nil, /* 76 */
1348 st_Nil, /* 77 */
1349 st_Nil, /* 78 */
1350 st_Nil, /* 79 */
1351 st_Nil, /* 80 */
1352 st_Nil, /* 81 */
1353 st_Nil, /* 82 */
1354 st_Nil, /* 83 */
1355 st_Nil, /* 84 */
1356 st_Nil, /* 85 */
1357 st_Nil, /* 86 */
1358 st_Nil, /* 87 */
1359 st_Nil, /* 88 */
1360 st_Nil, /* 89 */
1361 st_Nil, /* 90 */
1362 st_Nil, /* 91 */
1363 st_Nil, /* 92 */
1364 st_Nil, /* 93 */
1365 st_Nil, /* 94 */
1366 st_Nil, /* 95 */
1367 st_Nil, /* 96 */
1368 st_Nil, /* 97 */
1369 st_Nil, /* 98 */
1370 st_Nil, /* 99 */
1371 st_Block, /* 100: C_BLOCK block start/end */
1372 st_Proc, /* 101: C_FCN function start/end */
1373 st_End, /* 102: C_EOS end of struct/union/enum */
1374 st_File, /* 103: C_FILE file start */
1375 st_Nil, /* 104: C_LINE line number */
1376 st_Nil, /* 105: C_ALIAS combined type info */
1377 st_Nil, /* 106: C_HIDDEN ??? */
1378 };
1379
1380 /* Keep track of different sized allocation requests. */
1381 static alloc_info_t alloc_counts[(int) alloc_type_last];
1382 \f
1383 /* Record whether we have seen any debugging information. */
1384 int ecoff_debugging_seen = 0;
1385
1386 /* Various statics. */
1387 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */
1388 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */
1389 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */
1390 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */
1391 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */
1392 #ifdef ECOFF_DEBUG
1393 static int debug = 0; /* trace functions */
1394 #endif
1395 static int stabs_seen = 0; /* != 0 if stabs have been seen */
1396
1397 static int current_file_idx;
1398 static const char *current_stabs_filename;
1399
1400 /* Pseudo symbol to use when putting stabs into the symbol table. */
1401 #ifndef STABS_SYMBOL
1402 #define STABS_SYMBOL "@stabs"
1403 #endif
1404
1405 static char stabs_symbol[] = STABS_SYMBOL;
1406 \f
1407 /* Prototypes for functions defined in this file. */
1408
1409 static void add_varray_page (varray_t *vp);
1410 static symint_t add_string (varray_t *vp,
1411 struct hash_control *hash_tbl,
1412 const char *str,
1413 shash_t **ret_hash);
1414 static localsym_t *add_ecoff_symbol (const char *str, st_t type,
1415 sc_t storage, symbolS *sym,
1416 bfd_vma addend, symint_t value,
1417 symint_t indx);
1418 static symint_t add_aux_sym_symint (symint_t aux_word);
1419 static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index);
1420 static symint_t add_aux_sym_tir (type_info_t *t,
1421 hash_state_t state,
1422 thash_t **hash_tbl);
1423 static tag_t *get_tag (const char *tag, localsym_t *sym, bt_t basic_type);
1424 static void add_unknown_tag (tag_t *ptag);
1425 static void add_procedure (char *func);
1426 static void add_file (const char *file_name, int indx, int fake);
1427 #ifdef ECOFF_DEBUG
1428 static char *sc_to_string (sc_t storage_class);
1429 static char *st_to_string (st_t symbol_type);
1430 #endif
1431 static void mark_stabs (int);
1432 static char *ecoff_add_bytes (char **buf, char **bufend,
1433 char *bufptr, unsigned long need);
1434 static unsigned long ecoff_padding_adjust
1435 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1436 unsigned long offset, char **bufptrptr);
1437 static unsigned long ecoff_build_lineno
1438 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1439 unsigned long offset, long *linecntptr);
1440 static unsigned long ecoff_build_symbols
1441 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1442 unsigned long offset);
1443 static unsigned long ecoff_build_procs
1444 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1445 unsigned long offset);
1446 static unsigned long ecoff_build_aux
1447 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1448 unsigned long offset);
1449 static unsigned long ecoff_build_strings (char **buf, char **bufend,
1450 unsigned long offset,
1451 varray_t *vp);
1452 static unsigned long ecoff_build_ss
1453 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1454 unsigned long offset);
1455 static unsigned long ecoff_build_fdr
1456 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1457 unsigned long offset);
1458 static void ecoff_setup_ext (void);
1459 static page_type *allocate_cluster (unsigned long npages);
1460 static page_type *allocate_page (void);
1461 static scope_t *allocate_scope (void);
1462 static void free_scope (scope_t *ptr);
1463 static vlinks_t *allocate_vlinks (void);
1464 static shash_t *allocate_shash (void);
1465 static thash_t *allocate_thash (void);
1466 static tag_t *allocate_tag (void);
1467 static void free_tag (tag_t *ptr);
1468 static forward_t *allocate_forward (void);
1469 static thead_t *allocate_thead (void);
1470 static void free_thead (thead_t *ptr);
1471 static lineno_list_t *allocate_lineno_list (void);
1472 \f
1473 /* This function should be called when the assembler starts up. */
1474
1475 void
1476 ecoff_read_begin_hook (void)
1477 {
1478 tag_hash = hash_new ();
1479 top_tag_head = allocate_thead ();
1480 top_tag_head->first_tag = (tag_t *) NULL;
1481 top_tag_head->free = (thead_t *) NULL;
1482 top_tag_head->prev = cur_tag_head;
1483 cur_tag_head = top_tag_head;
1484 }
1485
1486 /* This function should be called when a symbol is created. */
1487
1488 void
1489 ecoff_symbol_new_hook (symbolS *symbolP)
1490 {
1491 OBJ_SYMFIELD_TYPE *obj;
1492
1493 /* Make sure that we have a file pointer, but only if we have seen a
1494 file. If we haven't seen a file, then this is a probably special
1495 symbol created by md_begin which may required special handling at
1496 some point. Creating a dummy file with a dummy name is certainly
1497 wrong. */
1498 if (cur_file_ptr == (efdr_t *) NULL
1499 && seen_at_least_1_file ())
1500 add_file ((const char *) NULL, 0, 1);
1501 obj = symbol_get_obj (symbolP);
1502 obj->ecoff_file = cur_file_ptr;
1503 obj->ecoff_symbol = NULL;
1504 obj->ecoff_extern_size = 0;
1505 }
1506
1507 void
1508 ecoff_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP)
1509 {
1510 OBJ_SYMFIELD_TYPE *n, *o;
1511
1512 n = symbol_get_obj (newsymP);
1513 o = symbol_get_obj (orgsymP);
1514 memcpy (n, o, sizeof *n);
1515 }
1516 \f
1517 /* Add a page to a varray object. */
1518
1519 static void
1520 add_varray_page (varray_t *vp /* varray to add page to */)
1521 {
1522 vlinks_t *new_links = allocate_vlinks ();
1523
1524 #ifdef MALLOC_CHECK
1525 if (vp->object_size > 1)
1526 new_links->datum = (page_type *) xcalloc (1, vp->object_size);
1527 else
1528 #endif
1529 new_links->datum = allocate_page ();
1530
1531 alloc_counts[(int) alloc_type_varray].total_alloc++;
1532 alloc_counts[(int) alloc_type_varray].total_pages++;
1533
1534 new_links->start_index = vp->num_allocated;
1535 vp->objects_last_page = 0;
1536
1537 if (vp->first == (vlinks_t *) NULL) /* first allocation? */
1538 vp->first = vp->last = new_links;
1539 else
1540 { /* 2nd or greater allocation */
1541 new_links->prev = vp->last;
1542 vp->last->next = new_links;
1543 vp->last = new_links;
1544 }
1545 }
1546 \f
1547 /* Add a string (and null pad) to one of the string tables. */
1548
1549 static symint_t
1550 add_string (varray_t *vp, /* string obstack */
1551 struct hash_control *hash_tbl, /* ptr to hash table */
1552 const char *str, /* string */
1553 shash_t **ret_hash /* return hash pointer */)
1554 {
1555 unsigned long len = strlen (str);
1556 shash_t *hash_ptr;
1557
1558 if (len >= PAGE_USIZE)
1559 as_fatal (_("string too big (%lu bytes)"), len);
1560
1561 hash_ptr = (shash_t *) hash_find (hash_tbl, str);
1562 if (hash_ptr == (shash_t *) NULL)
1563 {
1564 const char *err;
1565
1566 if (vp->objects_last_page + len >= PAGE_USIZE)
1567 {
1568 vp->num_allocated =
1569 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE;
1570 add_varray_page (vp);
1571 }
1572
1573 hash_ptr = allocate_shash ();
1574 hash_ptr->indx = vp->num_allocated;
1575
1576 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page];
1577
1578 vp->objects_last_page += len + 1;
1579 vp->num_allocated += len + 1;
1580
1581 strcpy (hash_ptr->string, str);
1582
1583 err = hash_insert (hash_tbl, str, (char *) hash_ptr);
1584 if (err)
1585 as_fatal (_("inserting \"%s\" into string hash table: %s"),
1586 str, err);
1587 }
1588
1589 if (ret_hash != (shash_t **) NULL)
1590 *ret_hash = hash_ptr;
1591
1592 return hash_ptr->indx;
1593 }
1594 \f
1595 /* Add debugging information for a symbol. */
1596
1597 static localsym_t *
1598 add_ecoff_symbol (const char *str, /* symbol name */
1599 st_t type, /* symbol type */
1600 sc_t storage, /* storage class */
1601 symbolS *sym_value, /* associated symbol. */
1602 bfd_vma addend, /* addend to sym_value. */
1603 symint_t value, /* value of symbol */
1604 symint_t indx /* index to local/aux. syms */)
1605 {
1606 localsym_t *psym;
1607 scope_t *pscope;
1608 thead_t *ptag_head;
1609 tag_t *ptag;
1610 tag_t *ptag_next;
1611 varray_t *vp;
1612 int scope_delta = 0;
1613 shash_t *hash_ptr = (shash_t *) NULL;
1614
1615 if (cur_file_ptr == (efdr_t *) NULL)
1616 as_fatal (_("no current file pointer"));
1617
1618 vp = &cur_file_ptr->symbols;
1619
1620 if (vp->objects_last_page == vp->objects_per_page)
1621 add_varray_page (vp);
1622
1623 psym = &vp->last->datum->sym[vp->objects_last_page++];
1624
1625 if (str == (const char *) NULL && sym_value != (symbolS *) NULL)
1626 psym->name = S_GET_NAME (sym_value);
1627 else
1628 psym->name = str;
1629 psym->as_sym = sym_value;
1630 if (sym_value != (symbolS *) NULL)
1631 symbol_get_obj (sym_value)->ecoff_symbol = psym;
1632 psym->addend = addend;
1633 psym->file_ptr = cur_file_ptr;
1634 psym->proc_ptr = cur_proc_ptr;
1635 psym->begin_ptr = (localsym_t *) NULL;
1636 psym->index_ptr = (aux_t *) NULL;
1637 psym->forward_ref = (forward_t *) NULL;
1638 psym->sym_index = -1;
1639 memset (&psym->ecoff_sym, 0, sizeof (EXTR));
1640 psym->ecoff_sym.asym.value = value;
1641 psym->ecoff_sym.asym.st = (unsigned) type;
1642 psym->ecoff_sym.asym.sc = (unsigned) storage;
1643 psym->ecoff_sym.asym.index = indx;
1644
1645 /* If there is an associated symbol, we wait until the end of the
1646 assembly before deciding where to put the name (it may be just an
1647 external symbol). Otherwise, this is just a debugging symbol and
1648 the name should go with the current file. */
1649 if (sym_value == (symbolS *) NULL)
1650 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL)
1651 ? 0
1652 : add_string (&cur_file_ptr->strings,
1653 cur_file_ptr->str_hash,
1654 str,
1655 &hash_ptr));
1656
1657 ++vp->num_allocated;
1658
1659 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym))
1660 return psym;
1661
1662 /* Save the symbol within the hash table if this is a static
1663 item, and it has a name. */
1664 if (hash_ptr != (shash_t *) NULL
1665 && (type == st_Global || type == st_Static || type == st_Label
1666 || type == st_Proc || type == st_StaticProc))
1667 hash_ptr->sym_ptr = psym;
1668
1669 /* push or pop a scope if appropriate. */
1670 switch (type)
1671 {
1672 default:
1673 break;
1674
1675 case st_File: /* beginning of file */
1676 case st_Proc: /* procedure */
1677 case st_StaticProc: /* static procedure */
1678 case st_Block: /* begin scope */
1679 pscope = allocate_scope ();
1680 pscope->prev = cur_file_ptr->cur_scope;
1681 pscope->lsym = psym;
1682 pscope->type = type;
1683 cur_file_ptr->cur_scope = pscope;
1684
1685 if (type != st_File)
1686 scope_delta = 1;
1687
1688 /* For every block type except file, struct, union, or
1689 enumeration blocks, push a level on the tag stack. We omit
1690 file types, so that tags can span file boundaries. */
1691 if (type != st_File && storage != sc_Info)
1692 {
1693 ptag_head = allocate_thead ();
1694 ptag_head->first_tag = 0;
1695 ptag_head->prev = cur_tag_head;
1696 cur_tag_head = ptag_head;
1697 }
1698 break;
1699
1700 case st_End:
1701 pscope = cur_file_ptr->cur_scope;
1702 if (pscope == (scope_t *) NULL)
1703 as_fatal (_("too many st_End's"));
1704 else
1705 {
1706 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st;
1707
1708 psym->begin_ptr = pscope->lsym;
1709
1710 if (begin_type != st_File)
1711 scope_delta = -1;
1712
1713 /* Except for file, structure, union, or enumeration end
1714 blocks remove all tags created within this scope. */
1715 if (begin_type != st_File && storage != sc_Info)
1716 {
1717 ptag_head = cur_tag_head;
1718 cur_tag_head = ptag_head->prev;
1719
1720 for (ptag = ptag_head->first_tag;
1721 ptag != (tag_t *) NULL;
1722 ptag = ptag_next)
1723 {
1724 if (ptag->forward_ref != (forward_t *) NULL)
1725 add_unknown_tag (ptag);
1726
1727 ptag_next = ptag->same_block;
1728 ptag->hash_ptr->tag_ptr = ptag->same_name;
1729 free_tag (ptag);
1730 }
1731
1732 free_thead (ptag_head);
1733 }
1734
1735 cur_file_ptr->cur_scope = pscope->prev;
1736
1737 /* block begin gets next sym #. This is set when we know
1738 the symbol index value. */
1739
1740 /* Functions push two or more aux words as follows:
1741 1st word: index+1 of the end symbol (filled in later).
1742 2nd word: type of the function (plus any aux words needed).
1743 Also, tie the external pointer back to the function begin symbol. */
1744 if (begin_type != st_File && begin_type != st_Block)
1745 {
1746 symint_t ty;
1747 varray_t *svp = &cur_file_ptr->aux_syms;
1748
1749 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0);
1750 pscope->lsym->index_ptr =
1751 &svp->last->datum->aux[svp->objects_last_page - 1];
1752 ty = add_aux_sym_tir (&last_func_type_info,
1753 hash_no,
1754 &cur_file_ptr->thash_head[0]);
1755 (void) ty;
1756 /* This seems to be unnecessary. I'm not even sure what it is
1757 * intended to do. It's from mips-tfile.
1758 * if (last_func_sym_value != (symbolS *) NULL)
1759 * {
1760 * last_func_sym_value->ifd = cur_file_ptr->file_index;
1761 * last_func_sym_value->index = ty;
1762 * }
1763 */
1764 }
1765
1766 free_scope (pscope);
1767 }
1768 }
1769
1770 cur_file_ptr->nested_scopes += scope_delta;
1771
1772 #ifdef ECOFF_DEBUG
1773 if (debug && type != st_File
1774 && (debug > 2 || type == st_Block || type == st_End
1775 || type == st_Proc || type == st_StaticProc))
1776 {
1777 char *sc_str = sc_to_string (storage);
1778 char *st_str = st_to_string (type);
1779 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0);
1780
1781 fprintf (stderr,
1782 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s",
1783 value, depth, sc_str);
1784
1785 if (str_start && str_end_p1 - str_start > 0)
1786 fprintf (stderr, " st= %-11s name= %.*s\n",
1787 st_str, str_end_p1 - str_start, str_start);
1788 else
1789 {
1790 unsigned long len = strlen (st_str);
1791 fprintf (stderr, " st= %.*s\n", len - 1, st_str);
1792 }
1793 }
1794 #endif
1795
1796 return psym;
1797 }
1798 \f
1799 /* Add an auxiliary symbol (passing a symint). This is actually used
1800 for integral aux types, not just symints. */
1801
1802 static symint_t
1803 add_aux_sym_symint (symint_t aux_word /* auxiliary information word */)
1804 {
1805 varray_t *vp;
1806 aux_t *aux_ptr;
1807
1808 if (cur_file_ptr == (efdr_t *) NULL)
1809 as_fatal (_("no current file pointer"));
1810
1811 vp = &cur_file_ptr->aux_syms;
1812
1813 if (vp->objects_last_page == vp->objects_per_page)
1814 add_varray_page (vp);
1815
1816 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1817 aux_ptr->type = aux_isym;
1818 aux_ptr->data.isym = aux_word;
1819
1820 return vp->num_allocated++;
1821 }
1822
1823 /* Add an auxiliary symbol (passing a file/symbol index combo). */
1824
1825 static symint_t
1826 add_aux_sym_rndx (int file_index, symint_t sym_index)
1827 {
1828 varray_t *vp;
1829 aux_t *aux_ptr;
1830
1831 if (cur_file_ptr == (efdr_t *) NULL)
1832 as_fatal (_("no current file pointer"));
1833
1834 vp = &cur_file_ptr->aux_syms;
1835
1836 if (vp->objects_last_page == vp->objects_per_page)
1837 add_varray_page (vp);
1838
1839 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1840 aux_ptr->type = aux_rndx;
1841 aux_ptr->data.rndx.rfd = file_index;
1842 aux_ptr->data.rndx.index = sym_index;
1843
1844 return vp->num_allocated++;
1845 }
1846 \f
1847 /* Add an auxiliary symbol (passing the basic type and possibly
1848 type qualifiers). */
1849
1850 static symint_t
1851 add_aux_sym_tir (type_info_t *t, /* current type information */
1852 hash_state_t state, /* whether to hash type or not */
1853 thash_t **hash_tbl /* pointer to hash table to use */)
1854 {
1855 varray_t *vp;
1856 aux_t *aux_ptr;
1857 static AUXU init_aux;
1858 symint_t ret;
1859 int i;
1860 AUXU aux;
1861
1862 if (cur_file_ptr == (efdr_t *) NULL)
1863 as_fatal (_("no current file pointer"));
1864
1865 vp = &cur_file_ptr->aux_syms;
1866
1867 aux = init_aux;
1868 aux.ti.bt = (int) t->basic_type;
1869 aux.ti.continued = 0;
1870 aux.ti.fBitfield = t->bitfield;
1871
1872 aux.ti.tq0 = (int) t->type_qualifiers[0];
1873 aux.ti.tq1 = (int) t->type_qualifiers[1];
1874 aux.ti.tq2 = (int) t->type_qualifiers[2];
1875 aux.ti.tq3 = (int) t->type_qualifiers[3];
1876 aux.ti.tq4 = (int) t->type_qualifiers[4];
1877 aux.ti.tq5 = (int) t->type_qualifiers[5];
1878
1879 /* For anything that adds additional information, we must not hash,
1880 so check here, and reset our state. */
1881
1882 if (state != hash_no
1883 && (t->type_qualifiers[0] == tq_Array
1884 || t->type_qualifiers[1] == tq_Array
1885 || t->type_qualifiers[2] == tq_Array
1886 || t->type_qualifiers[3] == tq_Array
1887 || t->type_qualifiers[4] == tq_Array
1888 || t->type_qualifiers[5] == tq_Array
1889 || t->basic_type == bt_Struct
1890 || t->basic_type == bt_Union
1891 || t->basic_type == bt_Enum
1892 || t->bitfield
1893 || t->num_dims > 0))
1894 state = hash_no;
1895
1896 /* See if we can hash this type, and save some space, but some types
1897 can't be hashed (because they contain arrays or continuations),
1898 and others can be put into the hash list, but cannot use existing
1899 types because other aux entries precede this one. */
1900
1901 if (state != hash_no)
1902 {
1903 thash_t *hash_ptr;
1904 symint_t hi;
1905
1906 hi = aux.isym & ((1 << HASHBITS) - 1);
1907 hi %= THASH_SIZE;
1908
1909 for (hash_ptr = hash_tbl[hi];
1910 hash_ptr != (thash_t *)0;
1911 hash_ptr = hash_ptr->next)
1912 {
1913 if (aux.isym == hash_ptr->type.isym)
1914 break;
1915 }
1916
1917 if (hash_ptr != (thash_t *) NULL && state == hash_yes)
1918 return hash_ptr->indx;
1919
1920 if (hash_ptr == (thash_t *) NULL)
1921 {
1922 hash_ptr = allocate_thash ();
1923 hash_ptr->next = hash_tbl[hi];
1924 hash_ptr->type = aux;
1925 hash_ptr->indx = vp->num_allocated;
1926 hash_tbl[hi] = hash_ptr;
1927 }
1928 }
1929
1930 /* Everything is set up, add the aux symbol. */
1931 if (vp->objects_last_page == vp->objects_per_page)
1932 add_varray_page (vp);
1933
1934 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1935 aux_ptr->type = aux_tir;
1936 aux_ptr->data = aux;
1937
1938 ret = vp->num_allocated++;
1939
1940 /* Add bitfield length if it exists.
1941
1942 NOTE: Mips documentation claims bitfield goes at the end of the
1943 AUX record, but the DECstation compiler emits it here.
1944 (This would only make a difference for enum bitfields.)
1945
1946 Also note: We use the last size given since gcc may emit 2
1947 for an enum bitfield. */
1948
1949 if (t->bitfield)
1950 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]);
1951
1952 /* Add tag information if needed. Structure, union, and enum
1953 references add 2 aux symbols: a [file index, symbol index]
1954 pointer to the structure type, and the current file index. */
1955
1956 if (t->basic_type == bt_Struct
1957 || t->basic_type == bt_Union
1958 || t->basic_type == bt_Enum)
1959 {
1960 symint_t file_index = t->tag_ptr->ifd;
1961 localsym_t *sym = t->tag_ptr->sym;
1962 forward_t *forward_ref = allocate_forward ();
1963
1964 if (sym != (localsym_t *) NULL)
1965 {
1966 forward_ref->next = sym->forward_ref;
1967 sym->forward_ref = forward_ref;
1968 }
1969 else
1970 {
1971 forward_ref->next = t->tag_ptr->forward_ref;
1972 t->tag_ptr->forward_ref = forward_ref;
1973 }
1974
1975 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil);
1976 forward_ref->index_ptr
1977 = &vp->last->datum->aux[vp->objects_last_page - 1];
1978
1979 (void) add_aux_sym_symint (file_index);
1980 forward_ref->ifd_ptr
1981 = &vp->last->datum->aux[vp->objects_last_page - 1];
1982 }
1983
1984 /* Add information about array bounds if they exist. */
1985 for (i = 0; i < t->num_dims; i++)
1986 {
1987 (void) add_aux_sym_rndx (ST_RFDESCAPE,
1988 cur_file_ptr->int_type);
1989
1990 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/
1991 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */
1992 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/
1993 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */
1994 ? 0
1995 : (t->sizes[i] * 8) / t->dimensions[i]);
1996 };
1997
1998 /* NOTE: Mips documentation claims that the bitfield width goes here.
1999 But it needs to be emitted earlier. */
2000
2001 return ret;
2002 }
2003 \f
2004 /* Add a tag to the tag table (unless it already exists). */
2005
2006 static tag_t *
2007 get_tag (const char *tag, /* tag name */
2008 localsym_t *sym, /* tag start block */
2009 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */)
2010 {
2011 shash_t *hash_ptr;
2012 const char *err;
2013 tag_t *tag_ptr;
2014
2015 if (cur_file_ptr == (efdr_t *) NULL)
2016 as_fatal (_("no current file pointer"));
2017
2018 hash_ptr = (shash_t *) hash_find (tag_hash, tag);
2019
2020 if (hash_ptr != (shash_t *) NULL
2021 && hash_ptr->tag_ptr != (tag_t *) NULL)
2022 {
2023 tag_ptr = hash_ptr->tag_ptr;
2024 if (sym != (localsym_t *) NULL)
2025 {
2026 tag_ptr->basic_type = basic_type;
2027 tag_ptr->ifd = cur_file_ptr->file_index;
2028 tag_ptr->sym = sym;
2029 }
2030 return tag_ptr;
2031 }
2032
2033 if (hash_ptr == (shash_t *) NULL)
2034 {
2035 char *perm;
2036
2037 perm = xstrdup (tag);
2038 hash_ptr = allocate_shash ();
2039 err = hash_insert (tag_hash, perm, (char *) hash_ptr);
2040 if (err)
2041 as_fatal (_("inserting \"%s\" into tag hash table: %s"),
2042 tag, err);
2043 hash_ptr->string = perm;
2044 }
2045
2046 tag_ptr = allocate_tag ();
2047 tag_ptr->forward_ref = (forward_t *) NULL;
2048 tag_ptr->hash_ptr = hash_ptr;
2049 tag_ptr->same_name = hash_ptr->tag_ptr;
2050 tag_ptr->basic_type = basic_type;
2051 tag_ptr->sym = sym;
2052 tag_ptr->ifd = ((sym == (localsym_t *) NULL)
2053 ? (symint_t) -1
2054 : cur_file_ptr->file_index);
2055 tag_ptr->same_block = cur_tag_head->first_tag;
2056
2057 cur_tag_head->first_tag = tag_ptr;
2058 hash_ptr->tag_ptr = tag_ptr;
2059
2060 return tag_ptr;
2061 }
2062 \f
2063 /* Add an unknown {struct, union, enum} tag. */
2064
2065 static void
2066 add_unknown_tag (tag_t *ptag /* pointer to tag information */)
2067 {
2068 shash_t *hash_ptr = ptag->hash_ptr;
2069 char *name = hash_ptr->string;
2070 localsym_t *sym;
2071 forward_t **pf;
2072
2073 #ifdef ECOFF_DEBUG
2074 if (debug > 1)
2075 {
2076 char *agg_type = "{unknown aggregate type}";
2077 switch (ptag->basic_type)
2078 {
2079 case bt_Struct: agg_type = "struct"; break;
2080 case bt_Union: agg_type = "union"; break;
2081 case bt_Enum: agg_type = "enum"; break;
2082 default: break;
2083 }
2084
2085 fprintf (stderr, "unknown %s %.*s found\n", agg_type,
2086 hash_ptr->len, name_start);
2087 }
2088 #endif
2089
2090 sym = add_ecoff_symbol (name,
2091 st_Block,
2092 sc_Info,
2093 (symbolS *) NULL,
2094 (bfd_vma) 0,
2095 (symint_t) 0,
2096 (symint_t) 0);
2097
2098 (void) add_ecoff_symbol (name,
2099 st_End,
2100 sc_Info,
2101 (symbolS *) NULL,
2102 (bfd_vma) 0,
2103 (symint_t) 0,
2104 (symint_t) 0);
2105
2106 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next)
2107 ;
2108 *pf = ptag->forward_ref;
2109 }
2110 \f
2111 /* Add a procedure to the current file's list of procedures, and record
2112 this is the current procedure. */
2113
2114 static void
2115 add_procedure (char *func /* func name */)
2116 {
2117 varray_t *vp;
2118 proc_t *new_proc_ptr;
2119 symbolS *sym;
2120
2121 #ifdef ECOFF_DEBUG
2122 if (debug)
2123 fputc ('\n', stderr);
2124 #endif
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 /* Set the BSF_FUNCTION flag for the symbol. */
2147 sym = symbol_find_or_make (func);
2148 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION;
2149
2150 /* Push the start of the function. */
2151 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text,
2152 sym, (bfd_vma) 0, (symint_t) 0,
2153 (symint_t) 0);
2154
2155 ++proc_cnt;
2156
2157 /* Fill in the linenos preceding the .ent, if any. */
2158 if (noproc_lineno != (lineno_list_t *) NULL)
2159 {
2160 lineno_list_t *l;
2161
2162 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next)
2163 l->proc = new_proc_ptr;
2164 *last_lineno_ptr = noproc_lineno;
2165 while (*last_lineno_ptr != NULL)
2166 {
2167 last_lineno = *last_lineno_ptr;
2168 last_lineno_ptr = &last_lineno->next;
2169 }
2170 noproc_lineno = (lineno_list_t *) NULL;
2171 }
2172 }
2173
2174 symbolS *
2175 ecoff_get_cur_proc_sym (void)
2176 {
2177 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL);
2178 }
2179 \f
2180 /* Add a new filename, and set up all of the file relative
2181 virtual arrays (strings, symbols, aux syms, etc.). Record
2182 where the current file structure lives. */
2183
2184 static void
2185 add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake)
2186 {
2187 int first_ch;
2188 efdr_t *fil_ptr;
2189
2190 #ifdef ECOFF_DEBUG
2191 if (debug)
2192 fprintf (stderr, "\tfile\t%.*s\n", len, file_start);
2193 #endif
2194
2195 /* If the file name is NULL, then no .file symbol appeared, and we
2196 want to use the actual file name. */
2197 if (file_name == (const char *) NULL)
2198 {
2199 char *file;
2200
2201 if (first_file != (efdr_t *) NULL)
2202 as_fatal (_("fake .file after real one"));
2203 as_where (&file, (unsigned int *) NULL);
2204 file_name = (const char *) file;
2205
2206 /* Automatically generate ECOFF debugging information, since I
2207 think that's what other ECOFF assemblers do. We don't do
2208 this if we see a .file directive with a string, since that
2209 implies that some sort of debugging information is being
2210 provided. */
2211 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED)
2212 debug_type = DEBUG_ECOFF;
2213 }
2214 else if (debug_type == DEBUG_UNSPECIFIED)
2215 debug_type = DEBUG_NONE;
2216
2217 #ifndef NO_LISTING
2218 if (listing)
2219 listing_source_file (file_name);
2220 #endif
2221
2222 current_stabs_filename = file_name;
2223
2224 /* If we're creating stabs, then we don't actually make a new FDR.
2225 Instead, we just create a stabs symbol. */
2226 if (stabs_seen)
2227 {
2228 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2229 symbol_new ("L0\001", now_seg,
2230 (valueT) frag_now_fix (),
2231 frag_now),
2232 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL));
2233 return;
2234 }
2235
2236 first_ch = *file_name;
2237
2238 /* FIXME: We can't safely merge files which have line number
2239 information (fMerge will be zero in this case). Otherwise, we
2240 get incorrect line number debugging info. See for instance
2241 ecoff_build_lineno, which will end up setting all file->fdr.*
2242 fields multiple times, resulting in incorrect debug info. In
2243 order to make this work right, all line number and symbol info
2244 for the same source file has to be adjacent in the object file,
2245 so that a single file descriptor can be used to point to them.
2246 This would require maintaining file specific lists of line
2247 numbers and symbols for each file, so that they can be merged
2248 together (or output together) when two .file pseudo-ops are
2249 merged into one file descriptor. */
2250
2251 /* See if the file has already been created. */
2252 for (fil_ptr = first_file;
2253 fil_ptr != (efdr_t *) NULL;
2254 fil_ptr = fil_ptr->next_file)
2255 {
2256 if (first_ch == fil_ptr->name[0]
2257 && filename_cmp (file_name, fil_ptr->name) == 0
2258 && fil_ptr->fdr.fMerge)
2259 {
2260 cur_file_ptr = fil_ptr;
2261 if (! fake)
2262 cur_file_ptr->fake = 0;
2263 break;
2264 }
2265 }
2266
2267 /* If this is a new file, create it. */
2268 if (fil_ptr == (efdr_t *) NULL)
2269 {
2270 if (file_desc.objects_last_page == file_desc.objects_per_page)
2271 add_varray_page (&file_desc);
2272
2273 fil_ptr = cur_file_ptr =
2274 &file_desc.last->datum->file[file_desc.objects_last_page++];
2275 *fil_ptr = init_file;
2276
2277 fil_ptr->file_index = current_file_idx++;
2278 ++file_desc.num_allocated;
2279
2280 fil_ptr->fake = fake;
2281
2282 /* Allocate the string hash table. */
2283 fil_ptr->str_hash = hash_new ();
2284
2285 /* Make sure 0 byte in string table is null */
2286 add_string (&fil_ptr->strings,
2287 fil_ptr->str_hash,
2288 "",
2289 (shash_t **)0);
2290
2291 if (strlen (file_name) > PAGE_USIZE - 2)
2292 as_fatal (_("filename goes over one page boundary"));
2293
2294 /* Push the start of the filename. We assume that the filename
2295 will be stored at string offset 1. */
2296 (void) add_ecoff_symbol (file_name, st_File, sc_Text,
2297 (symbolS *) NULL, (bfd_vma) 0,
2298 (symint_t) 0, (symint_t) 0);
2299 fil_ptr->fdr.rss = 1;
2300 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1];
2301
2302 /* Update the linked list of file descriptors. */
2303 *last_file_ptr = fil_ptr;
2304 last_file_ptr = &fil_ptr->next_file;
2305
2306 /* Add void & int types to the file (void should be first to catch
2307 errant 0's within the index fields). */
2308 fil_ptr->void_type = add_aux_sym_tir (&void_type_info,
2309 hash_yes,
2310 &cur_file_ptr->thash_head[0]);
2311
2312 fil_ptr->int_type = add_aux_sym_tir (&int_type_info,
2313 hash_yes,
2314 &cur_file_ptr->thash_head[0]);
2315 }
2316 }
2317
2318 /* This function is called when the assembler notices a preprocessor
2319 directive switching to a new file. This will not happen in
2320 compiler output, only in hand coded assembler. */
2321
2322 void
2323 ecoff_new_file (const char *name, int appfile ATTRIBUTE_UNUSED)
2324 {
2325 if (cur_file_ptr != NULL && filename_cmp (cur_file_ptr->name, name) == 0)
2326 return;
2327 add_file (name, 0, 0);
2328
2329 /* This is a hand coded assembler file, so automatically turn on
2330 debugging information. */
2331 if (debug_type == DEBUG_UNSPECIFIED)
2332 debug_type = DEBUG_ECOFF;
2333 }
2334 \f
2335 #ifdef ECOFF_DEBUG
2336
2337 /* Convert storage class to string. */
2338
2339 static char *
2340 sc_to_string (storage_class)
2341 sc_t storage_class;
2342 {
2343 switch (storage_class)
2344 {
2345 case sc_Nil: return "Nil,";
2346 case sc_Text: return "Text,";
2347 case sc_Data: return "Data,";
2348 case sc_Bss: return "Bss,";
2349 case sc_Register: return "Register,";
2350 case sc_Abs: return "Abs,";
2351 case sc_Undefined: return "Undefined,";
2352 case sc_CdbLocal: return "CdbLocal,";
2353 case sc_Bits: return "Bits,";
2354 case sc_CdbSystem: return "CdbSystem,";
2355 case sc_RegImage: return "RegImage,";
2356 case sc_Info: return "Info,";
2357 case sc_UserStruct: return "UserStruct,";
2358 case sc_SData: return "SData,";
2359 case sc_SBss: return "SBss,";
2360 case sc_RData: return "RData,";
2361 case sc_Var: return "Var,";
2362 case sc_Common: return "Common,";
2363 case sc_SCommon: return "SCommon,";
2364 case sc_VarRegister: return "VarRegister,";
2365 case sc_Variant: return "Variant,";
2366 case sc_SUndefined: return "SUndefined,";
2367 case sc_Init: return "Init,";
2368 case sc_Max: return "Max,";
2369 }
2370
2371 return "???,";
2372 }
2373
2374 #endif /* DEBUG */
2375 \f
2376 #ifdef ECOFF_DEBUG
2377
2378 /* Convert symbol type to string. */
2379
2380 static char *
2381 st_to_string (symbol_type)
2382 st_t symbol_type;
2383 {
2384 switch (symbol_type)
2385 {
2386 case st_Nil: return "Nil,";
2387 case st_Global: return "Global,";
2388 case st_Static: return "Static,";
2389 case st_Param: return "Param,";
2390 case st_Local: return "Local,";
2391 case st_Label: return "Label,";
2392 case st_Proc: return "Proc,";
2393 case st_Block: return "Block,";
2394 case st_End: return "End,";
2395 case st_Member: return "Member,";
2396 case st_Typedef: return "Typedef,";
2397 case st_File: return "File,";
2398 case st_RegReloc: return "RegReloc,";
2399 case st_Forward: return "Forward,";
2400 case st_StaticProc: return "StaticProc,";
2401 case st_Constant: return "Constant,";
2402 case st_Str: return "String,";
2403 case st_Number: return "Number,";
2404 case st_Expr: return "Expr,";
2405 case st_Type: return "Type,";
2406 case st_Max: return "Max,";
2407 }
2408
2409 return "???,";
2410 }
2411
2412 #endif /* DEBUG */
2413 \f
2414 /* Parse .begin directives which have a label as the first argument
2415 which gives the location of the start of the block. */
2416
2417 void
2418 ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED)
2419 {
2420 char *name;
2421 char name_end;
2422
2423 if (cur_file_ptr == (efdr_t *) NULL)
2424 {
2425 as_warn (_(".begin directive without a preceding .file directive"));
2426 demand_empty_rest_of_line ();
2427 return;
2428 }
2429
2430 if (cur_proc_ptr == (proc_t *) NULL)
2431 {
2432 as_warn (_(".begin directive without a preceding .ent directive"));
2433 demand_empty_rest_of_line ();
2434 return;
2435 }
2436
2437 name_end = get_symbol_name (&name);
2438
2439 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text,
2440 symbol_find_or_make (name),
2441 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2442
2443 (void) restore_line_pointer (name_end);
2444
2445 /* The line number follows, but we don't use it. */
2446 (void) get_absolute_expression ();
2447 demand_empty_rest_of_line ();
2448 }
2449 \f
2450 /* Parse .bend directives which have a label as the first argument
2451 which gives the location of the end of the block. */
2452
2453 void
2454 ecoff_directive_bend (int ignore ATTRIBUTE_UNUSED)
2455 {
2456 char *name;
2457 char name_end;
2458 symbolS *endsym;
2459
2460 if (cur_file_ptr == (efdr_t *) NULL)
2461 {
2462 as_warn (_(".bend directive without a preceding .file directive"));
2463 demand_empty_rest_of_line ();
2464 return;
2465 }
2466
2467 if (cur_proc_ptr == (proc_t *) NULL)
2468 {
2469 as_warn (_(".bend directive without a preceding .ent directive"));
2470 demand_empty_rest_of_line ();
2471 return;
2472 }
2473
2474 name_end = get_symbol_name (&name);
2475
2476 /* The value is the distance between the .bend directive and the
2477 corresponding symbol. We fill in the offset when we write out
2478 the symbol. */
2479 endsym = symbol_find (name);
2480 if (endsym == (symbolS *) NULL)
2481 as_warn (_(".bend directive names unknown symbol"));
2482 else
2483 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym,
2484 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2485
2486 restore_line_pointer (name_end);
2487
2488 /* The line number follows, but we don't use it. */
2489 (void) get_absolute_expression ();
2490 demand_empty_rest_of_line ();
2491 }
2492 \f
2493 /* COFF debugging information is provided as a series of directives
2494 (.def, .scl, etc.). We build up information as we read the
2495 directives in the following static variables, and file it away when
2496 we reach the .endef directive. */
2497 static char *coff_sym_name;
2498 static type_info_t coff_type;
2499 static sc_t coff_storage_class;
2500 static st_t coff_symbol_typ;
2501 static int coff_is_function;
2502 static char *coff_tag;
2503 static valueT coff_value;
2504 static symbolS *coff_sym_value;
2505 static bfd_vma coff_sym_addend;
2506 static int coff_inside_enumeration;
2507
2508 /* Handle a .def directive: start defining a symbol. */
2509
2510 void
2511 ecoff_directive_def (int ignore ATTRIBUTE_UNUSED)
2512 {
2513 char *name;
2514 char name_end;
2515
2516 ecoff_debugging_seen = 1;
2517
2518 SKIP_WHITESPACE ();
2519
2520 name_end = get_symbol_name (&name);
2521
2522 if (coff_sym_name != (char *) NULL)
2523 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored"));
2524 else if (*name == '\0')
2525 as_warn (_("empty symbol name in .def; ignored"));
2526 else
2527 {
2528 if (coff_sym_name != (char *) NULL)
2529 free (coff_sym_name);
2530 if (coff_tag != (char *) NULL)
2531 free (coff_tag);
2532
2533 coff_sym_name = xstrdup (name);
2534 coff_type = type_info_init;
2535 coff_storage_class = sc_Nil;
2536 coff_symbol_typ = st_Nil;
2537 coff_is_function = 0;
2538 coff_tag = (char *) NULL;
2539 coff_value = 0;
2540 coff_sym_value = (symbolS *) NULL;
2541 coff_sym_addend = 0;
2542 }
2543
2544 restore_line_pointer (name_end);
2545
2546 demand_empty_rest_of_line ();
2547 }
2548
2549 /* Handle a .dim directive, used to give dimensions for an array. The
2550 arguments are comma separated numbers. mips-tfile assumes that
2551 there will not be more than 6 dimensions, and gdb won't read any
2552 more than that anyhow, so I will also make that assumption. */
2553
2554 void
2555 ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED)
2556 {
2557 int dimens[N_TQ];
2558 int i;
2559
2560 if (coff_sym_name == (char *) NULL)
2561 {
2562 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored"));
2563 demand_empty_rest_of_line ();
2564 return;
2565 }
2566
2567 for (i = 0; i < N_TQ; i++)
2568 {
2569 SKIP_WHITESPACE ();
2570 dimens[i] = get_absolute_expression ();
2571 if (*input_line_pointer == ',')
2572 ++input_line_pointer;
2573 else
2574 {
2575 if (*input_line_pointer != '\n'
2576 && *input_line_pointer != ';')
2577 as_warn (_("badly formed .dim directive"));
2578 break;
2579 }
2580 }
2581
2582 if (i == N_TQ)
2583 --i;
2584
2585 /* The dimensions are stored away in reverse order. */
2586 for (; i >= 0; i--)
2587 {
2588 if (coff_type.num_dims >= N_TQ)
2589 {
2590 as_warn (_("too many .dim entries"));
2591 break;
2592 }
2593 coff_type.dimensions[coff_type.num_dims] = dimens[i];
2594 ++coff_type.num_dims;
2595 }
2596
2597 demand_empty_rest_of_line ();
2598 }
2599
2600 /* Handle a .scl directive, which sets the COFF storage class of the
2601 symbol. */
2602
2603 void
2604 ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED)
2605 {
2606 long val;
2607
2608 if (coff_sym_name == (char *) NULL)
2609 {
2610 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored"));
2611 demand_empty_rest_of_line ();
2612 return;
2613 }
2614
2615 val = get_absolute_expression ();
2616
2617 coff_symbol_typ = map_coff_sym_type[val];
2618 coff_storage_class = map_coff_storage[val];
2619
2620 demand_empty_rest_of_line ();
2621 }
2622
2623 /* Handle a .size directive. For some reason mips-tfile.c thinks that
2624 .size can have multiple arguments. We humor it, although gcc will
2625 never generate more than one argument. */
2626
2627 void
2628 ecoff_directive_size (int ignore ATTRIBUTE_UNUSED)
2629 {
2630 int sizes[N_TQ];
2631 int i;
2632
2633 if (coff_sym_name == (char *) NULL)
2634 {
2635 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored"));
2636 demand_empty_rest_of_line ();
2637 return;
2638 }
2639
2640 for (i = 0; i < N_TQ; i++)
2641 {
2642 SKIP_WHITESPACE ();
2643 sizes[i] = get_absolute_expression ();
2644 if (*input_line_pointer == ',')
2645 ++input_line_pointer;
2646 else
2647 {
2648 if (*input_line_pointer != '\n'
2649 && *input_line_pointer != ';')
2650 as_warn (_("badly formed .size directive"));
2651 break;
2652 }
2653 }
2654
2655 if (i == N_TQ)
2656 --i;
2657
2658 /* The sizes are stored away in reverse order. */
2659 for (; i >= 0; i--)
2660 {
2661 if (coff_type.num_sizes >= N_TQ)
2662 {
2663 as_warn (_("too many .size entries"));
2664 break;
2665 }
2666 coff_type.sizes[coff_type.num_sizes] = sizes[i];
2667 ++coff_type.num_sizes;
2668 }
2669
2670 demand_empty_rest_of_line ();
2671 }
2672
2673 /* Handle the .type directive, which gives the COFF type of the
2674 symbol. */
2675
2676 void
2677 ecoff_directive_type (int ignore ATTRIBUTE_UNUSED)
2678 {
2679 long val;
2680 tq_t *tq_ptr;
2681 tq_t *tq_shft;
2682
2683 if (coff_sym_name == (char *) NULL)
2684 {
2685 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored"));
2686 demand_empty_rest_of_line ();
2687 return;
2688 }
2689
2690 val = get_absolute_expression ();
2691
2692 coff_type.orig_type = BTYPE (val);
2693 coff_type.basic_type = map_coff_types[coff_type.orig_type];
2694
2695 tq_ptr = &coff_type.type_qualifiers[N_TQ];
2696 while (val & ~N_BTMASK)
2697 {
2698 if (tq_ptr == &coff_type.type_qualifiers[0])
2699 {
2700 /* FIXME: We could handle this by setting the continued bit.
2701 There would still be a limit: the .type argument can not
2702 be infinite. */
2703 as_warn (_("the type of %s is too complex; it will be simplified"),
2704 coff_sym_name);
2705 break;
2706 }
2707 if (ISPTR (val))
2708 *--tq_ptr = tq_Ptr;
2709 else if (ISFCN (val))
2710 *--tq_ptr = tq_Proc;
2711 else if (ISARY (val))
2712 *--tq_ptr = tq_Array;
2713 else
2714 as_fatal (_("Unrecognized .type argument"));
2715
2716 val = DECREF (val);
2717 }
2718
2719 tq_shft = &coff_type.type_qualifiers[0];
2720 while (tq_ptr != &coff_type.type_qualifiers[N_TQ])
2721 *tq_shft++ = *tq_ptr++;
2722
2723 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc)
2724 {
2725 /* If this is a function, ignore it, so that we don't get two
2726 entries (one from the .ent, and one for the .def that
2727 precedes it). Save the type information so that the end
2728 block can properly add it after the begin block index. For
2729 MIPS knows what reason, we must strip off the function type
2730 at this point. */
2731 coff_is_function = 1;
2732 tq_shft[-1] = tq_Nil;
2733 }
2734
2735 while (tq_shft != &coff_type.type_qualifiers[N_TQ])
2736 *tq_shft++ = tq_Nil;
2737
2738 demand_empty_rest_of_line ();
2739 }
2740
2741 /* Handle the .tag directive, which gives the name of a structure,
2742 union or enum. */
2743
2744 void
2745 ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED)
2746 {
2747 char *name;
2748 char name_end;
2749
2750 if (coff_sym_name == (char *) NULL)
2751 {
2752 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored"));
2753 demand_empty_rest_of_line ();
2754 return;
2755 }
2756
2757 name_end = get_symbol_name (&name);
2758
2759 coff_tag = xstrdup (name);
2760
2761 (void) restore_line_pointer (name_end);
2762
2763 demand_empty_rest_of_line ();
2764 }
2765
2766 /* Handle the .val directive, which gives the value of the symbol. It
2767 may be the name of a static or global symbol. */
2768
2769 void
2770 ecoff_directive_val (int ignore ATTRIBUTE_UNUSED)
2771 {
2772 expressionS exp;
2773
2774 if (coff_sym_name == (char *) NULL)
2775 {
2776 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored"));
2777 demand_empty_rest_of_line ();
2778 return;
2779 }
2780
2781 expression (&exp);
2782 if (exp.X_op != O_constant && exp.X_op != O_symbol)
2783 {
2784 as_bad (_(".val expression is too complex"));
2785 demand_empty_rest_of_line ();
2786 return;
2787 }
2788
2789 if (exp.X_op == O_constant)
2790 coff_value = exp.X_add_number;
2791 else
2792 {
2793 coff_sym_value = exp.X_add_symbol;
2794 coff_sym_addend = exp.X_add_number;
2795 }
2796
2797 demand_empty_rest_of_line ();
2798 }
2799
2800 /* Handle the .endef directive, which terminates processing of COFF
2801 debugging information for a symbol. */
2802
2803 void
2804 ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED)
2805 {
2806 char *name;
2807 symint_t indx;
2808 localsym_t *sym;
2809
2810 demand_empty_rest_of_line ();
2811
2812 if (coff_sym_name == (char *) NULL)
2813 {
2814 as_warn (_(".endef pseudo-op used before .def; ignored"));
2815 return;
2816 }
2817
2818 name = coff_sym_name;
2819 coff_sym_name = (char *) NULL;
2820
2821 /* If the symbol is a static or external, we have already gotten the
2822 appropriate type and class, so make sure we don't override those
2823 values. This is needed because there are some type and classes
2824 that are not in COFF, such as short data, etc. */
2825 if (coff_sym_value != (symbolS *) NULL)
2826 {
2827 coff_symbol_typ = st_Nil;
2828 coff_storage_class = sc_Nil;
2829 }
2830
2831 coff_type.extra_sizes = coff_tag != (char *) NULL;
2832 if (coff_type.num_dims > 0)
2833 {
2834 int diff = coff_type.num_dims - coff_type.num_sizes;
2835 int i = coff_type.num_dims - 1;
2836 int j;
2837
2838 if (coff_type.num_sizes != 1 || diff < 0)
2839 {
2840 as_warn (_("bad COFF debugging information"));
2841 return;
2842 }
2843
2844 /* If this is an array, make sure the same number of dimensions
2845 and sizes were passed, creating extra sizes for multiply
2846 dimensioned arrays if not passed. */
2847 coff_type.extra_sizes = 0;
2848 if (diff)
2849 {
2850 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1;
2851 while (j >= 0)
2852 {
2853 coff_type.sizes[j] = (((j - diff) >= 0)
2854 ? coff_type.sizes[j - diff]
2855 : 0);
2856 j--;
2857 }
2858
2859 coff_type.num_sizes = i + 1;
2860 for (i--; i >= 0; i--)
2861 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0
2862 ? 0
2863 : (coff_type.sizes[i + 1]
2864 / coff_type.dimensions[i + 1]));
2865 }
2866 }
2867 else if (coff_symbol_typ == st_Member
2868 && coff_type.num_sizes - coff_type.extra_sizes == 1)
2869 {
2870 /* Is this a bitfield? This is indicated by a structure member
2871 having a size field that isn't an array. */
2872 coff_type.bitfield = 1;
2873 }
2874
2875 /* Except for enumeration members & begin/ending of scopes, put the
2876 type word in the aux. symbol table. */
2877 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End)
2878 indx = 0;
2879 else if (coff_inside_enumeration)
2880 indx = cur_file_ptr->void_type;
2881 else
2882 {
2883 if (coff_type.basic_type == bt_Struct
2884 || coff_type.basic_type == bt_Union
2885 || coff_type.basic_type == bt_Enum)
2886 {
2887 if (coff_tag == (char *) NULL)
2888 {
2889 as_warn (_("no tag specified for %s"), name);
2890 return;
2891 }
2892
2893 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL,
2894 coff_type.basic_type);
2895 }
2896
2897 if (coff_is_function)
2898 {
2899 last_func_type_info = coff_type;
2900 last_func_sym_value = coff_sym_value;
2901 return;
2902 }
2903
2904 indx = add_aux_sym_tir (&coff_type,
2905 hash_yes,
2906 &cur_file_ptr->thash_head[0]);
2907 }
2908
2909 /* Do any last minute adjustments that are necessary. */
2910 switch (coff_symbol_typ)
2911 {
2912 default:
2913 break;
2914
2915 /* For the beginning of structs, unions, and enumerations, the
2916 size info needs to be passed in the value field. */
2917 case st_Block:
2918 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes
2919 != 1)
2920 {
2921 as_warn (_("bad COFF debugging information"));
2922 return;
2923 }
2924 else
2925 coff_value = coff_type.sizes[0];
2926
2927 coff_inside_enumeration = (coff_type.orig_type == T_ENUM);
2928 break;
2929
2930 /* For the end of structs, unions, and enumerations, omit the
2931 name which is always ".eos". This needs to be done last, so
2932 that any error reporting above gives the correct name. */
2933 case st_End:
2934 free (name);
2935 name = (char *) NULL;
2936 coff_value = 0;
2937 coff_inside_enumeration = 0;
2938 break;
2939
2940 /* Members of structures and unions that aren't bitfields, need
2941 to adjust the value from a byte offset to a bit offset.
2942 Members of enumerations do not have the value adjusted, and
2943 can be distinguished by indx == indexNil. For enumerations,
2944 update the maximum enumeration value. */
2945 case st_Member:
2946 if (! coff_type.bitfield && ! coff_inside_enumeration)
2947 coff_value *= 8;
2948
2949 break;
2950 }
2951
2952 /* Add the symbol. */
2953 sym = add_ecoff_symbol (name,
2954 coff_symbol_typ,
2955 coff_storage_class,
2956 coff_sym_value,
2957 coff_sym_addend,
2958 (symint_t) coff_value,
2959 indx);
2960
2961 /* deal with struct, union, and enum tags. */
2962 if (coff_symbol_typ == st_Block)
2963 {
2964 /* Create or update the tag information. */
2965 tag_t *tag_ptr = get_tag (name,
2966 sym,
2967 coff_type.basic_type);
2968 forward_t **pf;
2969
2970 /* Remember any forward references. */
2971 for (pf = &sym->forward_ref;
2972 *pf != (forward_t *) NULL;
2973 pf = &(*pf)->next)
2974 ;
2975 *pf = tag_ptr->forward_ref;
2976 tag_ptr->forward_ref = (forward_t *) NULL;
2977 }
2978 }
2979 \f
2980 /* Parse .end directives. */
2981
2982 void
2983 ecoff_directive_end (int ignore ATTRIBUTE_UNUSED)
2984 {
2985 char *name;
2986 char name_end;
2987 symbolS *ent;
2988
2989 if (cur_file_ptr == (efdr_t *) NULL)
2990 {
2991 as_warn (_(".end directive without a preceding .file directive"));
2992 demand_empty_rest_of_line ();
2993 return;
2994 }
2995
2996 if (cur_proc_ptr == (proc_t *) NULL)
2997 {
2998 as_warn (_(".end directive without a preceding .ent directive"));
2999 demand_empty_rest_of_line ();
3000 return;
3001 }
3002
3003 name_end = get_symbol_name (&name);
3004
3005 if (name == input_line_pointer)
3006 {
3007 as_warn (_(".end directive has no name"));
3008 (void) restore_line_pointer (name_end);
3009 demand_empty_rest_of_line ();
3010 return;
3011 }
3012
3013 /* The value is the distance between the .end directive and the
3014 corresponding symbol. We create a fake symbol to hold the
3015 current location, and put in the offset when we write out the
3016 symbol. */
3017 ent = symbol_find (name);
3018 if (ent == (symbolS *) NULL)
3019 as_warn (_(".end directive names unknown symbol"));
3020 else
3021 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text,
3022 symbol_new ("L0\001", now_seg,
3023 (valueT) frag_now_fix (),
3024 frag_now),
3025 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
3026
3027 cur_proc_ptr = (proc_t *) NULL;
3028
3029 (void) restore_line_pointer (name_end);
3030 demand_empty_rest_of_line ();
3031 }
3032 \f
3033 /* Parse .ent directives. */
3034
3035 void
3036 ecoff_directive_ent (int ignore ATTRIBUTE_UNUSED)
3037 {
3038 char *name;
3039 char name_end;
3040
3041 if (cur_file_ptr == (efdr_t *) NULL)
3042 add_file ((const char *) NULL, 0, 1);
3043
3044 if (cur_proc_ptr != (proc_t *) NULL)
3045 {
3046 as_warn (_("second .ent directive found before .end directive"));
3047 demand_empty_rest_of_line ();
3048 return;
3049 }
3050
3051 name_end = get_symbol_name (&name);
3052
3053 if (name == input_line_pointer)
3054 {
3055 as_warn (_(".ent directive has no name"));
3056 (void) restore_line_pointer (name_end);
3057 demand_empty_rest_of_line ();
3058 return;
3059 }
3060
3061 add_procedure (name);
3062
3063 (void) restore_line_pointer (name_end);
3064
3065 /* The .ent directive is sometimes followed by a number. I'm not
3066 really sure what the number means. I don't see any way to store
3067 the information in the PDR. The Irix 4 assembler seems to ignore
3068 the information. */
3069 SKIP_WHITESPACE ();
3070 if (*input_line_pointer == ',')
3071 {
3072 ++input_line_pointer;
3073 SKIP_WHITESPACE ();
3074 }
3075 if (ISDIGIT (*input_line_pointer)
3076 || *input_line_pointer == '-')
3077 (void) get_absolute_expression ();
3078
3079 demand_empty_rest_of_line ();
3080 }
3081 \f
3082 /* Parse .extern directives. */
3083
3084 void
3085 ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED)
3086 {
3087 char *name;
3088 int c;
3089 symbolS *symbolp;
3090 valueT size;
3091
3092 c = get_symbol_name (&name);
3093 symbolp = symbol_find_or_make (name);
3094 (void) restore_line_pointer (c);
3095
3096 S_SET_EXTERNAL (symbolp);
3097
3098 if (*input_line_pointer == ',')
3099 ++input_line_pointer;
3100 size = get_absolute_expression ();
3101
3102 symbol_get_obj (symbolp)->ecoff_extern_size = size;
3103 }
3104 \f
3105 /* Parse .file directives. */
3106
3107 void
3108 ecoff_directive_file (int ignore ATTRIBUTE_UNUSED)
3109 {
3110 int indx;
3111 char *name;
3112 int len;
3113
3114 if (cur_proc_ptr != (proc_t *) NULL)
3115 {
3116 as_warn (_("no way to handle .file within .ent/.end section"));
3117 demand_empty_rest_of_line ();
3118 return;
3119 }
3120
3121 indx = (int) get_absolute_expression ();
3122
3123 /* FIXME: we don't have to save the name here. */
3124 name = demand_copy_C_string (&len);
3125
3126 add_file (name, indx - 1, 0);
3127
3128 demand_empty_rest_of_line ();
3129 }
3130 \f
3131 /* Parse .fmask directives. */
3132
3133 void
3134 ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED)
3135 {
3136 long val;
3137
3138 if (cur_proc_ptr == (proc_t *) NULL)
3139 {
3140 as_warn (_(".fmask outside of .ent"));
3141 demand_empty_rest_of_line ();
3142 return;
3143 }
3144
3145 if (get_absolute_expression_and_terminator (&val) != ',')
3146 {
3147 as_warn (_("bad .fmask directive"));
3148 --input_line_pointer;
3149 demand_empty_rest_of_line ();
3150 return;
3151 }
3152
3153 cur_proc_ptr->pdr.fregmask = val;
3154 cur_proc_ptr->pdr.fregoffset = get_absolute_expression ();
3155
3156 demand_empty_rest_of_line ();
3157 }
3158 \f
3159 /* Parse .frame directives. */
3160
3161 void
3162 ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED)
3163 {
3164 long val;
3165
3166 if (cur_proc_ptr == (proc_t *) NULL)
3167 {
3168 as_warn (_(".frame outside of .ent"));
3169 demand_empty_rest_of_line ();
3170 return;
3171 }
3172
3173 cur_proc_ptr->pdr.framereg = tc_get_register (1);
3174
3175 SKIP_WHITESPACE ();
3176 if (*input_line_pointer++ != ','
3177 || get_absolute_expression_and_terminator (&val) != ',')
3178 {
3179 as_warn (_("bad .frame directive"));
3180 --input_line_pointer;
3181 demand_empty_rest_of_line ();
3182 return;
3183 }
3184
3185 cur_proc_ptr->pdr.frameoffset = val;
3186
3187 cur_proc_ptr->pdr.pcreg = tc_get_register (0);
3188
3189 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to
3190 Sandro. I don't yet know where this value should be stored, if
3191 anywhere. Don't call demand_empty_rest_of_line (). */
3192 s_ignore (42);
3193 }
3194 \f
3195 /* Parse .mask directives. */
3196
3197 void
3198 ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED)
3199 {
3200 long val;
3201
3202 if (cur_proc_ptr == (proc_t *) NULL)
3203 {
3204 as_warn (_(".mask outside of .ent"));
3205 demand_empty_rest_of_line ();
3206 return;
3207 }
3208
3209 if (get_absolute_expression_and_terminator (&val) != ',')
3210 {
3211 as_warn (_("bad .mask directive"));
3212 --input_line_pointer;
3213 demand_empty_rest_of_line ();
3214 return;
3215 }
3216
3217 cur_proc_ptr->pdr.regmask = val;
3218 cur_proc_ptr->pdr.regoffset = get_absolute_expression ();
3219
3220 demand_empty_rest_of_line ();
3221 }
3222 \f
3223 /* Parse .loc directives. */
3224
3225 void
3226 ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED)
3227 {
3228 lineno_list_t *list;
3229 symint_t lineno;
3230
3231 if (cur_file_ptr == (efdr_t *) NULL)
3232 {
3233 as_warn (_(".loc before .file"));
3234 demand_empty_rest_of_line ();
3235 return;
3236 }
3237
3238 if (now_seg != text_section)
3239 {
3240 as_warn (_(".loc outside of .text"));
3241 demand_empty_rest_of_line ();
3242 return;
3243 }
3244
3245 /* Skip the file number. */
3246 SKIP_WHITESPACE ();
3247 get_absolute_expression ();
3248 SKIP_WHITESPACE ();
3249
3250 lineno = get_absolute_expression ();
3251
3252 #ifndef NO_LISTING
3253 if (listing)
3254 listing_source_line (lineno);
3255 #endif
3256
3257 /* If we're building stabs, then output a special label rather than
3258 ECOFF line number info. */
3259 if (stabs_seen)
3260 {
3261 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text,
3262 symbol_new ("L0\001", now_seg,
3263 (valueT) frag_now_fix (),
3264 frag_now),
3265 (bfd_vma) 0, 0, lineno);
3266 return;
3267 }
3268
3269 list = allocate_lineno_list ();
3270
3271 list->next = (lineno_list_t *) NULL;
3272 list->file = cur_file_ptr;
3273 list->proc = cur_proc_ptr;
3274 list->frag = frag_now;
3275 list->paddr = frag_now_fix ();
3276 list->lineno = lineno;
3277
3278 /* We don't want to merge files which have line numbers. */
3279 cur_file_ptr->fdr.fMerge = 0;
3280
3281 /* A .loc directive will sometimes appear before a .ent directive,
3282 which means that cur_proc_ptr will be NULL here. Arrange to
3283 patch this up. */
3284 if (cur_proc_ptr == (proc_t *) NULL)
3285 {
3286 lineno_list_t **pl;
3287
3288 pl = &noproc_lineno;
3289 while (*pl != (lineno_list_t *) NULL)
3290 pl = &(*pl)->next;
3291 *pl = list;
3292 }
3293 else
3294 {
3295 last_lineno = list;
3296 *last_lineno_ptr = list;
3297 last_lineno_ptr = &list->next;
3298 }
3299 }
3300
3301 /* The MIPS assembler sometimes inserts nop instructions in the
3302 instruction stream. When this happens, we must patch up the .loc
3303 information so that it points to the instruction after the nop. */
3304
3305 void
3306 ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset)
3307 {
3308 if (last_lineno != NULL
3309 && last_lineno->frag == old_frag
3310 && last_lineno->paddr == old_frag_offset)
3311 {
3312 last_lineno->frag = frag_now;
3313 last_lineno->paddr = frag_now_fix ();
3314 }
3315 }
3316 \f
3317 /* Make sure the @stabs symbol is emitted. */
3318
3319 static void
3320 mark_stabs (int ignore ATTRIBUTE_UNUSED)
3321 {
3322 if (! stabs_seen)
3323 {
3324 /* Add a dummy @stabs dymbol. */
3325 stabs_seen = 1;
3326 (void) add_ecoff_symbol (stabs_symbol, st_Nil, sc_Info,
3327 (symbolS *) NULL,
3328 (bfd_vma) 0, (symint_t) -1,
3329 ECOFF_MARK_STAB (0));
3330 }
3331 }
3332 \f
3333 /* Parse .weakext directives. */
3334 #ifndef TC_MIPS
3335 /* For TC_MIPS use the version in tc-mips.c. */
3336 void
3337 ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED)
3338 {
3339 char *name;
3340 int c;
3341 symbolS *symbolP;
3342 expressionS exp;
3343
3344 c = get_symbol_name (&name);
3345 symbolP = symbol_find_or_make (name);
3346 (void) restore_line_pointer (c);
3347
3348 SKIP_WHITESPACE ();
3349
3350 if (*input_line_pointer == ',')
3351 {
3352 if (S_IS_DEFINED (symbolP))
3353 {
3354 as_bad (_("symbol `%s' is already defined"),
3355 S_GET_NAME (symbolP));
3356 ignore_rest_of_line ();
3357 return;
3358 }
3359
3360 ++input_line_pointer;
3361 SKIP_WHITESPACE ();
3362 if (! is_end_of_line[(unsigned char) *input_line_pointer])
3363 {
3364 expression (&exp);
3365 if (exp.X_op != O_symbol)
3366 {
3367 as_bad (_("bad .weakext directive"));
3368 ignore_rest_of_line ();
3369 return;
3370 }
3371 symbol_set_value_expression (symbolP, &exp);
3372 }
3373 }
3374
3375 S_SET_WEAK (symbolP);
3376
3377 demand_empty_rest_of_line ();
3378 }
3379 #endif /* not TC_MIPS */
3380 \f
3381 /* Handle .stabs directives. The actual parsing routine is done by a
3382 generic routine. This routine is called via OBJ_PROCESS_STAB.
3383 When this is called, input_line_pointer will be pointing at the
3384 value field of the stab.
3385
3386 .stabs directives have five fields:
3387 "string" a string, encoding the type information.
3388 code a numeric code, defined in <stab.h>
3389 0 a zero
3390 desc a zero or line number
3391 value a numeric value or an address.
3392
3393 If the value is relocatable, we transform this into:
3394 iss points as an index into string space
3395 value value from lookup of the name
3396 st st from lookup of the name
3397 sc sc from lookup of the name
3398 index code|CODE_MASK
3399
3400 If the value is not relocatable, we transform this into:
3401 iss points as an index into string space
3402 value value
3403 st st_Nil
3404 sc sc_Nil
3405 index code|CODE_MASK
3406
3407 .stabn directives have four fields (string is null):
3408 code a numeric code, defined in <stab.h>
3409 0 a zero
3410 desc a zero or a line number
3411 value a numeric value or an address. */
3412
3413 void
3414 ecoff_stab (segT sec ATTRIBUTE_UNUSED,
3415 int what,
3416 const char *string,
3417 int type,
3418 int other,
3419 int desc)
3420 {
3421 efdr_t *save_file_ptr = cur_file_ptr;
3422 symbolS *sym;
3423 symint_t value;
3424 bfd_vma addend;
3425 st_t st;
3426 sc_t sc;
3427 symint_t indx;
3428 localsym_t *hold = NULL;
3429
3430 ecoff_debugging_seen = 1;
3431
3432 /* We don't handle .stabd. */
3433 if (what != 's' && what != 'n')
3434 {
3435 as_bad (_(".stab%c is not supported"), what);
3436 return;
3437 }
3438
3439 /* A .stabn uses a null name, not an empty string. */
3440 if (what == 'n')
3441 string = NULL;
3442
3443 /* We ignore the other field. */
3444 if (other != 0)
3445 as_warn (_(".stab%c: ignoring non-zero other field"), what);
3446
3447 /* Make sure we have a current file. */
3448 if (cur_file_ptr == (efdr_t *) NULL)
3449 {
3450 add_file ((const char *) NULL, 0, 1);
3451 save_file_ptr = cur_file_ptr;
3452 }
3453
3454 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
3455 signal to gdb. */
3456 if (stabs_seen == 0)
3457 mark_stabs (0);
3458
3459 /* Line number stabs are handled differently, since they have two
3460 values, the line number and the address of the label. We use the
3461 index field (aka desc) to hold the line number, and the value
3462 field to hold the address. The symbol type is st_Label, which
3463 should be different from the other stabs, so that gdb can
3464 recognize it. */
3465 if (type == N_SLINE)
3466 {
3467 SYMR dummy_symr;
3468 char *name;
3469 char name_end;
3470
3471 #ifndef NO_LISTING
3472 if (listing)
3473 listing_source_line ((unsigned int) desc);
3474 #endif
3475
3476 dummy_symr.index = desc;
3477 if (dummy_symr.index != desc)
3478 {
3479 as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"),
3480 desc, what);
3481 return;
3482 }
3483
3484 name_end = get_symbol_name (&name);
3485 sym = symbol_find_or_make (name);
3486 (void) restore_line_pointer (name_end);
3487
3488 value = 0;
3489 addend = 0;
3490 st = st_Label;
3491 sc = sc_Text;
3492 indx = desc;
3493 }
3494 else
3495 {
3496 #ifndef NO_LISTING
3497 if (listing && (type == N_SO || type == N_SOL))
3498 listing_source_file (string);
3499 #endif
3500
3501 if (ISDIGIT (*input_line_pointer)
3502 || *input_line_pointer == '-'
3503 || *input_line_pointer == '+')
3504 {
3505 st = st_Nil;
3506 sc = sc_Nil;
3507 sym = (symbolS *) NULL;
3508 value = get_absolute_expression ();
3509 addend = 0;
3510 }
3511 else if (! is_name_beginner ((unsigned char) *input_line_pointer))
3512 {
3513 as_warn (_("illegal .stab%c directive, bad character"), what);
3514 return;
3515 }
3516 else
3517 {
3518 expressionS exp;
3519
3520 sc = sc_Nil;
3521 st = st_Nil;
3522
3523 expression (&exp);
3524 if (exp.X_op == O_constant)
3525 {
3526 sym = NULL;
3527 value = exp.X_add_number;
3528 addend = 0;
3529 }
3530 else if (exp.X_op == O_symbol)
3531 {
3532 sym = exp.X_add_symbol;
3533 value = 0;
3534 addend = exp.X_add_number;
3535 }
3536 else
3537 {
3538 sym = make_expr_symbol (&exp);
3539 value = 0;
3540 addend = 0;
3541 }
3542 }
3543
3544 indx = ECOFF_MARK_STAB (type);
3545 }
3546
3547 /* Don't store the stabs symbol we are creating as the type of the
3548 ECOFF symbol. We want to compute the type of the ECOFF symbol
3549 independently. */
3550 if (sym != (symbolS *) NULL)
3551 hold = symbol_get_obj (sym)->ecoff_symbol;
3552
3553 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx);
3554
3555 if (sym != (symbolS *) NULL)
3556 symbol_get_obj (sym)->ecoff_symbol = hold;
3557
3558 /* Restore normal file type. */
3559 cur_file_ptr = save_file_ptr;
3560 }
3561 \f
3562 /* Frob an ECOFF symbol. Small common symbols go into a special
3563 .scommon section rather than bfd_com_section. */
3564
3565 void
3566 ecoff_frob_symbol (symbolS *sym)
3567 {
3568 if (S_IS_COMMON (sym)
3569 && S_GET_VALUE (sym) > 0
3570 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput))
3571 {
3572 static asection scom_section;
3573 static asymbol scom_symbol;
3574
3575 /* We must construct a fake section similar to bfd_com_section
3576 but with the name .scommon. */
3577 if (scom_section.name == NULL)
3578 {
3579 scom_section = *bfd_com_section_ptr;
3580 scom_section.name = ".scommon";
3581 scom_section.output_section = &scom_section;
3582 scom_section.symbol = &scom_symbol;
3583 scom_section.symbol_ptr_ptr = &scom_section.symbol;
3584 scom_symbol = *bfd_com_section_ptr->symbol;
3585 scom_symbol.name = ".scommon";
3586 scom_symbol.section = &scom_section;
3587 }
3588 S_SET_SEGMENT (sym, &scom_section);
3589 }
3590
3591 /* Double check weak symbols. */
3592 if (S_IS_WEAK (sym))
3593 {
3594 if (S_IS_COMMON (sym))
3595 as_bad (_("symbol `%s' can not be both weak and common"),
3596 S_GET_NAME (sym));
3597 }
3598 }
3599 \f
3600 /* Add bytes to the symbolic information buffer. */
3601
3602 static char *
3603 ecoff_add_bytes (char **buf,
3604 char **bufend,
3605 char *bufptr,
3606 unsigned long need)
3607 {
3608 unsigned long at;
3609 unsigned long want;
3610
3611 at = bufptr - *buf;
3612 need -= *bufend - bufptr;
3613 if (need < PAGE_SIZE)
3614 need = PAGE_SIZE;
3615 want = (*bufend - *buf) + need;
3616 *buf = (char *) xrealloc (*buf, want);
3617 *bufend = *buf + want;
3618 return *buf + at;
3619 }
3620
3621 /* Adjust the symbolic information buffer to the alignment required
3622 for the ECOFF target debugging information. */
3623
3624 static unsigned long
3625 ecoff_padding_adjust (const struct ecoff_debug_swap *backend,
3626 char **buf,
3627 char **bufend,
3628 unsigned long offset,
3629 char **bufptrptr)
3630 {
3631 bfd_size_type align;
3632
3633 align = backend->debug_align;
3634 if ((offset & (align - 1)) != 0)
3635 {
3636 unsigned long add;
3637
3638 add = align - (offset & (align - 1));
3639 if ((unsigned long) (*bufend - (*buf + offset)) < add)
3640 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add);
3641 memset (*buf + offset, 0, add);
3642 offset += add;
3643 if (bufptrptr != (char **) NULL)
3644 *bufptrptr = *buf + offset;
3645 }
3646
3647 return offset;
3648 }
3649
3650 /* Build the line number information. */
3651
3652 static unsigned long
3653 ecoff_build_lineno (const struct ecoff_debug_swap *backend,
3654 char **buf,
3655 char **bufend,
3656 unsigned long offset,
3657 long *linecntptr)
3658 {
3659 char *bufptr;
3660 lineno_list_t *l;
3661 lineno_list_t *last;
3662 efdr_t *file;
3663 proc_t *proc;
3664 unsigned long c;
3665 long iline;
3666 long totcount;
3667 lineno_list_t first;
3668 lineno_list_t *local_first_lineno = first_lineno;
3669
3670 if (linecntptr != (long *) NULL)
3671 *linecntptr = 0;
3672
3673 bufptr = *buf + offset;
3674
3675 file = (efdr_t *) NULL;
3676 proc = (proc_t *) NULL;
3677 last = (lineno_list_t *) NULL;
3678 c = offset;
3679 iline = 0;
3680 totcount = 0;
3681
3682 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to
3683 remove this code. */
3684 /* For some reason the address of the first procedure is ignored
3685 when reading line numbers. This doesn't matter if the address of
3686 the first procedure is 0, but when gcc is generating MIPS
3687 embedded PIC code, it will put strings in the .text section
3688 before the first procedure. We cope by inserting a dummy line if
3689 the address of the first procedure is not 0. Hopefully this
3690 won't screw things up too badly.
3691
3692 Don't do this for ECOFF assembly source line numbers. They work
3693 without this extra attention. */
3694 if (debug_type != DEBUG_ECOFF
3695 && first_proc_ptr != (proc_t *) NULL
3696 && local_first_lineno != (lineno_list_t *) NULL
3697 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym)
3698 + bfd_get_section_vma (stdoutput,
3699 S_GET_SEGMENT (first_proc_ptr->sym->as_sym)))
3700 != 0))
3701 {
3702 first.file = local_first_lineno->file;
3703 first.proc = local_first_lineno->proc;
3704 first.frag = &zero_address_frag;
3705 first.paddr = 0;
3706 first.lineno = 0;
3707
3708 first.next = local_first_lineno;
3709 local_first_lineno = &first;
3710 }
3711
3712 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next)
3713 {
3714 long count;
3715 long delta;
3716
3717 /* Get the offset to the memory address of the next line number
3718 (in words). Do this first, so that we can skip ahead to the
3719 next useful line number entry. */
3720 if (l->next == (lineno_list_t *) NULL)
3721 {
3722 /* We want a count of zero, but it will be decremented
3723 before it is used. */
3724 count = 1;
3725 }
3726 else if (l->next->frag->fr_address + l->next->paddr
3727 > l->frag->fr_address + l->paddr)
3728 {
3729 count = ((l->next->frag->fr_address + l->next->paddr
3730 - (l->frag->fr_address + l->paddr))
3731 >> 2);
3732 }
3733 else
3734 {
3735 /* Don't change last, so we still get the right delta. */
3736 continue;
3737 }
3738
3739 if (l->file != file || l->proc != proc)
3740 {
3741 if (l->proc != proc && proc != (proc_t *) NULL)
3742 proc->pdr.lnHigh = last->lineno;
3743 if (l->file != file && file != (efdr_t *) NULL)
3744 {
3745 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3746 file->fdr.cline = totcount + count;
3747 if (linecntptr != (long *) NULL)
3748 *linecntptr += totcount + count;
3749 totcount = 0;
3750 }
3751
3752 if (l->file != file)
3753 {
3754 efdr_t *last_file = file;
3755
3756 file = l->file;
3757 if (last_file != (efdr_t *) NULL)
3758 file->fdr.ilineBase
3759 = last_file->fdr.ilineBase + last_file->fdr.cline;
3760 else
3761 file->fdr.ilineBase = 0;
3762 file->fdr.cbLineOffset = c;
3763 }
3764 if (l->proc != proc)
3765 {
3766 proc = l->proc;
3767 if (proc != (proc_t *) NULL)
3768 {
3769 proc->pdr.lnLow = l->lineno;
3770 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset;
3771 proc->pdr.iline = totcount;
3772 }
3773 }
3774
3775 last = (lineno_list_t *) NULL;
3776 }
3777
3778 totcount += count;
3779
3780 /* Get the offset to this line number. */
3781 if (last == (lineno_list_t *) NULL)
3782 delta = 0;
3783 else
3784 delta = l->lineno - last->lineno;
3785
3786 /* Put in the offset to this line number. */
3787 while (delta != 0)
3788 {
3789 int setcount;
3790
3791 /* 1 is added to each count read. */
3792 --count;
3793 /* We can only adjust the word count by up to 15 words at a
3794 time. */
3795 if (count <= 0x0f)
3796 {
3797 setcount = count;
3798 count = 0;
3799 }
3800 else
3801 {
3802 setcount = 0x0f;
3803 count -= 0x0f;
3804 }
3805 if (delta >= -7 && delta <= 7)
3806 {
3807 if (bufptr >= *bufend)
3808 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3809 *bufptr++ = setcount + (delta << 4);
3810 delta = 0;
3811 ++c;
3812 }
3813 else
3814 {
3815 int set;
3816
3817 if (*bufend - bufptr < 3)
3818 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3);
3819 *bufptr++ = setcount + (8 << 4);
3820 if (delta < -0x8000)
3821 {
3822 set = -0x8000;
3823 delta += 0x8000;
3824 }
3825 else if (delta > 0x7fff)
3826 {
3827 set = 0x7fff;
3828 delta -= 0x7fff;
3829 }
3830 else
3831 {
3832 set = delta;
3833 delta = 0;
3834 }
3835 *bufptr++ = set >> 8;
3836 *bufptr++ = set & 0xffff;
3837 c += 3;
3838 }
3839 }
3840
3841 /* Finish adjusting the count. */
3842 while (count > 0)
3843 {
3844 if (bufptr >= *bufend)
3845 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3846 /* 1 is added to each count read. */
3847 --count;
3848 if (count > 0x0f)
3849 {
3850 *bufptr++ = 0x0f;
3851 count -= 0x0f;
3852 }
3853 else
3854 {
3855 *bufptr++ = count;
3856 count = 0;
3857 }
3858 ++c;
3859 }
3860
3861 ++iline;
3862 last = l;
3863 }
3864
3865 if (proc != (proc_t *) NULL)
3866 proc->pdr.lnHigh = last->lineno;
3867 if (file != (efdr_t *) NULL)
3868 {
3869 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3870 file->fdr.cline = totcount;
3871 }
3872
3873 if (linecntptr != (long *) NULL)
3874 *linecntptr += totcount;
3875
3876 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr);
3877
3878 return c;
3879 }
3880
3881 /* Build and swap out the symbols. */
3882
3883 static unsigned long
3884 ecoff_build_symbols (const struct ecoff_debug_swap *backend,
3885 char **buf,
3886 char **bufend,
3887 unsigned long offset)
3888 {
3889 const bfd_size_type external_sym_size = backend->external_sym_size;
3890 void (* const swap_sym_out) (bfd *, const SYMR *, void *)
3891 = backend->swap_sym_out;
3892 char *sym_out;
3893 long isym;
3894 vlinks_t *file_link;
3895
3896 sym_out = *buf + offset;
3897
3898 isym = 0;
3899
3900 /* The symbols are stored by file. */
3901 for (file_link = file_desc.first;
3902 file_link != (vlinks_t *) NULL;
3903 file_link = file_link->next)
3904 {
3905 int ifilesym;
3906 int fil_cnt;
3907 efdr_t *fil_ptr;
3908 efdr_t *fil_end;
3909
3910 if (file_link->next == (vlinks_t *) NULL)
3911 fil_cnt = file_desc.objects_last_page;
3912 else
3913 fil_cnt = file_desc.objects_per_page;
3914 fil_ptr = file_link->datum->file;
3915 fil_end = fil_ptr + fil_cnt;
3916 for (; fil_ptr < fil_end; fil_ptr++)
3917 {
3918 vlinks_t *sym_link;
3919
3920 fil_ptr->fdr.isymBase = isym;
3921 ifilesym = isym;
3922 for (sym_link = fil_ptr->symbols.first;
3923 sym_link != (vlinks_t *) NULL;
3924 sym_link = sym_link->next)
3925 {
3926 int sym_cnt;
3927 localsym_t *sym_ptr;
3928 localsym_t *sym_end;
3929
3930 if (sym_link->next == (vlinks_t *) NULL)
3931 sym_cnt = fil_ptr->symbols.objects_last_page;
3932 else
3933 sym_cnt = fil_ptr->symbols.objects_per_page;
3934 sym_ptr = sym_link->datum->sym;
3935 sym_end = sym_ptr + sym_cnt;
3936 for (; sym_ptr < sym_end; sym_ptr++)
3937 {
3938 int local;
3939 symbolS *as_sym;
3940 forward_t *f;
3941
3942 know (sym_ptr->file_ptr == fil_ptr);
3943
3944 /* If there is no associated gas symbol, then this
3945 is a pure debugging symbol. We have already
3946 added the name (if any) to fil_ptr->strings.
3947 Otherwise we must decide whether this is an
3948 external or a local symbol (actually, it may be
3949 both if the local provides additional debugging
3950 information for the external). */
3951 local = 1;
3952 as_sym = sym_ptr->as_sym;
3953 if (as_sym != (symbolS *) NULL)
3954 {
3955 symint_t indx;
3956
3957 /* The value of a block start symbol is the
3958 offset from the start of the procedure. For
3959 other symbols we just use the gas value (but
3960 we must offset it by the vma of the section,
3961 just as BFD does, because BFD will not see
3962 this value). */
3963 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block
3964 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text)
3965 {
3966 symbolS *begin_sym;
3967
3968 know (sym_ptr->proc_ptr != (proc_t *) NULL);
3969 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
3970 if (S_GET_SEGMENT (as_sym)
3971 != S_GET_SEGMENT (begin_sym))
3972 as_warn (_(".begin/.bend in different segments"));
3973 sym_ptr->ecoff_sym.asym.value =
3974 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
3975 }
3976 else
3977 sym_ptr->ecoff_sym.asym.value =
3978 (S_GET_VALUE (as_sym)
3979 + bfd_get_section_vma (stdoutput,
3980 S_GET_SEGMENT (as_sym))
3981 + sym_ptr->addend);
3982
3983 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym);
3984
3985 /* Set st_Proc to st_StaticProc for local
3986 functions. */
3987 if (sym_ptr->ecoff_sym.asym.st == st_Proc
3988 && S_IS_DEFINED (as_sym)
3989 && ! S_IS_EXTERNAL (as_sym)
3990 && ! S_IS_WEAK (as_sym))
3991 sym_ptr->ecoff_sym.asym.st = st_StaticProc;
3992
3993 /* Get the type and storage class based on where
3994 the symbol actually wound up. Traditionally,
3995 N_LBRAC and N_RBRAC are *not* relocated. */
3996 indx = sym_ptr->ecoff_sym.asym.index;
3997 if (sym_ptr->ecoff_sym.asym.st == st_Nil
3998 && sym_ptr->ecoff_sym.asym.sc == sc_Nil
3999 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4000 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC)
4001 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC))))
4002 {
4003 segT seg;
4004 const char *segname;
4005 st_t st;
4006 sc_t sc;
4007
4008 seg = S_GET_SEGMENT (as_sym);
4009 segname = segment_name (seg);
4010
4011 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4012 && (S_IS_EXTERNAL (as_sym)
4013 || S_IS_WEAK (as_sym)
4014 || ! S_IS_DEFINED (as_sym)))
4015 {
4016 if ((symbol_get_bfdsym (as_sym)->flags
4017 & BSF_FUNCTION) != 0)
4018 st = st_Proc;
4019 else
4020 st = st_Global;
4021 }
4022 else if (seg == text_section)
4023 st = st_Label;
4024 else
4025 st = st_Static;
4026
4027 if (! S_IS_DEFINED (as_sym))
4028 {
4029 valueT s;
4030
4031 s = symbol_get_obj (as_sym)->ecoff_extern_size;
4032 if (s == 0
4033 || s > bfd_get_gp_size (stdoutput))
4034 sc = sc_Undefined;
4035 else
4036 {
4037 sc = sc_SUndefined;
4038 sym_ptr->ecoff_sym.asym.value = s;
4039 }
4040 #ifdef S_SET_SIZE
4041 S_SET_SIZE (as_sym, s);
4042 #endif
4043 }
4044 else if (S_IS_COMMON (as_sym))
4045 {
4046 if (S_GET_VALUE (as_sym) > 0
4047 && (S_GET_VALUE (as_sym)
4048 <= bfd_get_gp_size (stdoutput)))
4049 sc = sc_SCommon;
4050 else
4051 sc = sc_Common;
4052 }
4053 else if (seg == text_section)
4054 sc = sc_Text;
4055 else if (seg == data_section)
4056 sc = sc_Data;
4057 else if (strcmp (segname, ".rdata") == 0
4058 || strcmp (segname, ".rodata") == 0)
4059 sc = sc_RData;
4060 else if (strcmp (segname, ".sdata") == 0)
4061 sc = sc_SData;
4062 else if (seg == bss_section)
4063 sc = sc_Bss;
4064 else if (strcmp (segname, ".sbss") == 0)
4065 sc = sc_SBss;
4066 else if (seg == bfd_abs_section_ptr)
4067 sc = sc_Abs;
4068 else
4069 {
4070 /* This must be a user named section.
4071 This is not possible in ECOFF, but it
4072 is in ELF. */
4073 sc = sc_Data;
4074 }
4075
4076 sym_ptr->ecoff_sym.asym.st = (int) st;
4077 sym_ptr->ecoff_sym.asym.sc = (int) sc;
4078 }
4079
4080 /* This is just an external symbol if it is
4081 outside a procedure and it has a type.
4082 FIXME: g++ will generate symbols which have
4083 different names in the debugging information
4084 than the actual symbol. Should we handle
4085 them here? */
4086 if ((S_IS_EXTERNAL (as_sym)
4087 || S_IS_WEAK (as_sym)
4088 || ! S_IS_DEFINED (as_sym))
4089 && sym_ptr->proc_ptr == (proc_t *) NULL
4090 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil
4091 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym))
4092 local = 0;
4093
4094 /* This is just an external symbol if it is a
4095 common symbol. */
4096 if (S_IS_COMMON (as_sym))
4097 local = 0;
4098
4099 /* If an st_end symbol has an associated gas
4100 symbol, then it is a local label created for
4101 a .bend or .end directive. Stabs line
4102 numbers will have \001 in the names. */
4103 if (local
4104 && sym_ptr->ecoff_sym.asym.st != st_End
4105 && strchr (sym_ptr->name, '\001') == 0)
4106 sym_ptr->ecoff_sym.asym.iss =
4107 add_string (&fil_ptr->strings,
4108 fil_ptr->str_hash,
4109 sym_ptr->name,
4110 (shash_t **) NULL);
4111 }
4112
4113 /* We now know the index of this symbol; fill in
4114 locations that have been waiting for that
4115 information. */
4116 if (sym_ptr->begin_ptr != (localsym_t *) NULL)
4117 {
4118 localsym_t *begin_ptr;
4119 st_t begin_type;
4120
4121 know (local);
4122 begin_ptr = sym_ptr->begin_ptr;
4123 know (begin_ptr->sym_index != -1);
4124 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index;
4125 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4126 sym_ptr->ecoff_sym.asym.iss =
4127 begin_ptr->ecoff_sym.asym.iss;
4128
4129 begin_type = (st_t) begin_ptr->ecoff_sym.asym.st;
4130 if (begin_type == st_File
4131 || begin_type == st_Block)
4132 {
4133 begin_ptr->ecoff_sym.asym.index =
4134 isym - ifilesym + 1;
4135 (*swap_sym_out) (stdoutput,
4136 &begin_ptr->ecoff_sym.asym,
4137 (*buf
4138 + offset
4139 + (begin_ptr->sym_index
4140 * external_sym_size)));
4141 }
4142 else
4143 {
4144 know (begin_ptr->index_ptr != (aux_t *) NULL);
4145 begin_ptr->index_ptr->data.isym =
4146 isym - ifilesym + 1;
4147 }
4148
4149 /* The value of the symbol marking the end of a
4150 procedure is the size of the procedure. The
4151 value of the symbol marking the end of a
4152 block is the offset from the start of the
4153 procedure to the block. */
4154 if (begin_type == st_Proc
4155 || begin_type == st_StaticProc)
4156 {
4157 know (as_sym != (symbolS *) NULL);
4158 know (begin_ptr->as_sym != (symbolS *) NULL);
4159 if (S_GET_SEGMENT (as_sym)
4160 != S_GET_SEGMENT (begin_ptr->as_sym))
4161 as_warn (_(".begin/.bend in different segments"));
4162 sym_ptr->ecoff_sym.asym.value =
4163 (S_GET_VALUE (as_sym)
4164 - S_GET_VALUE (begin_ptr->as_sym));
4165
4166 /* If the size is odd, this is probably a
4167 mips16 function; force it to be even. */
4168 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0)
4169 ++sym_ptr->ecoff_sym.asym.value;
4170
4171 #ifdef S_SET_SIZE
4172 S_SET_SIZE (begin_ptr->as_sym,
4173 sym_ptr->ecoff_sym.asym.value);
4174 #endif
4175 }
4176 else if (begin_type == st_Block
4177 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4178 {
4179 symbolS *begin_sym;
4180
4181 know (as_sym != (symbolS *) NULL);
4182 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4183 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4184 if (S_GET_SEGMENT (as_sym)
4185 != S_GET_SEGMENT (begin_sym))
4186 as_warn (_(".begin/.bend in different segments"));
4187 sym_ptr->ecoff_sym.asym.value =
4188 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4189 }
4190 }
4191
4192 for (f = sym_ptr->forward_ref;
4193 f != (forward_t *) NULL;
4194 f = f->next)
4195 {
4196 know (local);
4197 f->ifd_ptr->data.isym = fil_ptr->file_index;
4198 f->index_ptr->data.rndx.index = isym - ifilesym;
4199 }
4200
4201 if (local)
4202 {
4203 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size)
4204 sym_out = ecoff_add_bytes (buf, bufend,
4205 sym_out,
4206 external_sym_size);
4207 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym,
4208 sym_out);
4209 sym_out += external_sym_size;
4210
4211 sym_ptr->sym_index = isym;
4212
4213 if (sym_ptr->proc_ptr != (proc_t *) NULL
4214 && sym_ptr->proc_ptr->sym == sym_ptr)
4215 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym;
4216
4217 ++isym;
4218 }
4219
4220 /* Record the local symbol index and file number in
4221 case this is an external symbol. Note that this
4222 destroys the asym.index field. */
4223 if (as_sym != (symbolS *) NULL
4224 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr)
4225 {
4226 if ((sym_ptr->ecoff_sym.asym.st == st_Proc
4227 || sym_ptr->ecoff_sym.asym.st == st_StaticProc)
4228 && local)
4229 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1;
4230 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index;
4231
4232 /* Don't try to merge an FDR which has an
4233 external symbol attached to it. */
4234 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym))
4235 fil_ptr->fdr.fMerge = 0;
4236 }
4237 }
4238 }
4239 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase;
4240 }
4241 }
4242
4243 return offset + isym * external_sym_size;
4244 }
4245
4246 /* Swap out the procedure information. */
4247
4248 static unsigned long
4249 ecoff_build_procs (const struct ecoff_debug_swap *backend,
4250 char **buf,
4251 char **bufend,
4252 unsigned long offset)
4253 {
4254 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4255 void (* const swap_pdr_out) (bfd *, const PDR *, void *)
4256 = backend->swap_pdr_out;
4257 char *pdr_out;
4258 long iproc;
4259 vlinks_t *file_link;
4260
4261 pdr_out = *buf + offset;
4262
4263 iproc = 0;
4264
4265 /* The procedures are stored by file. */
4266 for (file_link = file_desc.first;
4267 file_link != (vlinks_t *) NULL;
4268 file_link = file_link->next)
4269 {
4270 int fil_cnt;
4271 efdr_t *fil_ptr;
4272 efdr_t *fil_end;
4273
4274 if (file_link->next == (vlinks_t *) NULL)
4275 fil_cnt = file_desc.objects_last_page;
4276 else
4277 fil_cnt = file_desc.objects_per_page;
4278 fil_ptr = file_link->datum->file;
4279 fil_end = fil_ptr + fil_cnt;
4280 for (; fil_ptr < fil_end; fil_ptr++)
4281 {
4282 vlinks_t *proc_link;
4283 int first;
4284
4285 fil_ptr->fdr.ipdFirst = iproc;
4286 first = 1;
4287 for (proc_link = fil_ptr->procs.first;
4288 proc_link != (vlinks_t *) NULL;
4289 proc_link = proc_link->next)
4290 {
4291 int prc_cnt;
4292 proc_t *proc_ptr;
4293 proc_t *proc_end;
4294
4295 if (proc_link->next == (vlinks_t *) NULL)
4296 prc_cnt = fil_ptr->procs.objects_last_page;
4297 else
4298 prc_cnt = fil_ptr->procs.objects_per_page;
4299 proc_ptr = proc_link->datum->proc;
4300 proc_end = proc_ptr + prc_cnt;
4301 for (; proc_ptr < proc_end; proc_ptr++)
4302 {
4303 symbolS *adr_sym;
4304 unsigned long adr;
4305
4306 adr_sym = proc_ptr->sym->as_sym;
4307 adr = (S_GET_VALUE (adr_sym)
4308 + bfd_get_section_vma (stdoutput,
4309 S_GET_SEGMENT (adr_sym)));
4310 if (first)
4311 {
4312 /* This code used to force the adr of the very
4313 first fdr to be 0. However, the native tools
4314 don't do that, and I can't remember why it
4315 used to work that way, so I took it out. */
4316 fil_ptr->fdr.adr = adr;
4317 first = 0;
4318 }
4319 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr;
4320 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size)
4321 pdr_out = ecoff_add_bytes (buf, bufend,
4322 pdr_out,
4323 external_pdr_size);
4324 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out);
4325 pdr_out += external_pdr_size;
4326 ++iproc;
4327 }
4328 }
4329 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst;
4330 }
4331 }
4332
4333 return offset + iproc * external_pdr_size;
4334 }
4335
4336 /* Swap out the aux information. */
4337
4338 static unsigned long
4339 ecoff_build_aux (const struct ecoff_debug_swap *backend,
4340 char **buf,
4341 char **bufend,
4342 unsigned long offset)
4343 {
4344 int bigendian;
4345 union aux_ext *aux_out;
4346 long iaux;
4347 vlinks_t *file_link;
4348
4349 bigendian = bfd_big_endian (stdoutput);
4350
4351 aux_out = (union aux_ext *) (*buf + offset);
4352
4353 iaux = 0;
4354
4355 /* The aux entries are stored by file. */
4356 for (file_link = file_desc.first;
4357 file_link != (vlinks_t *) NULL;
4358 file_link = file_link->next)
4359 {
4360 int fil_cnt;
4361 efdr_t *fil_ptr;
4362 efdr_t *fil_end;
4363
4364 if (file_link->next == (vlinks_t *) NULL)
4365 fil_cnt = file_desc.objects_last_page;
4366 else
4367 fil_cnt = file_desc.objects_per_page;
4368 fil_ptr = file_link->datum->file;
4369 fil_end = fil_ptr + fil_cnt;
4370 for (; fil_ptr < fil_end; fil_ptr++)
4371 {
4372 vlinks_t *aux_link;
4373
4374 fil_ptr->fdr.fBigendian = bigendian;
4375 fil_ptr->fdr.iauxBase = iaux;
4376 for (aux_link = fil_ptr->aux_syms.first;
4377 aux_link != (vlinks_t *) NULL;
4378 aux_link = aux_link->next)
4379 {
4380 int aux_cnt;
4381 aux_t *aux_ptr;
4382 aux_t *aux_end;
4383
4384 if (aux_link->next == (vlinks_t *) NULL)
4385 aux_cnt = fil_ptr->aux_syms.objects_last_page;
4386 else
4387 aux_cnt = fil_ptr->aux_syms.objects_per_page;
4388 aux_ptr = aux_link->datum->aux;
4389 aux_end = aux_ptr + aux_cnt;
4390 for (; aux_ptr < aux_end; aux_ptr++)
4391 {
4392 if ((unsigned long) (*bufend - (char *) aux_out)
4393 < sizeof (union aux_ext))
4394 aux_out = ((union aux_ext *)
4395 ecoff_add_bytes (buf, bufend,
4396 (char *) aux_out,
4397 sizeof (union aux_ext)));
4398 switch (aux_ptr->type)
4399 {
4400 case aux_tir:
4401 (*backend->swap_tir_out) (bigendian,
4402 &aux_ptr->data.ti,
4403 &aux_out->a_ti);
4404 break;
4405 case aux_rndx:
4406 (*backend->swap_rndx_out) (bigendian,
4407 &aux_ptr->data.rndx,
4408 &aux_out->a_rndx);
4409 break;
4410 case aux_dnLow:
4411 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow,
4412 aux_out);
4413 break;
4414 case aux_dnHigh:
4415 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh,
4416 aux_out);
4417 break;
4418 case aux_isym:
4419 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym,
4420 aux_out);
4421 break;
4422 case aux_iss:
4423 AUX_PUT_ISS (bigendian, aux_ptr->data.iss,
4424 aux_out);
4425 break;
4426 case aux_width:
4427 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width,
4428 aux_out);
4429 break;
4430 case aux_count:
4431 AUX_PUT_COUNT (bigendian, aux_ptr->data.count,
4432 aux_out);
4433 break;
4434 }
4435
4436 ++aux_out;
4437 ++iaux;
4438 }
4439 }
4440 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase;
4441 }
4442 }
4443
4444 return ecoff_padding_adjust (backend, buf, bufend,
4445 offset + iaux * sizeof (union aux_ext),
4446 (char **) NULL);
4447 }
4448
4449 /* Copy out the strings from a varray_t. This returns the number of
4450 bytes copied, rather than the new offset. */
4451
4452 static unsigned long
4453 ecoff_build_strings (char **buf,
4454 char **bufend,
4455 unsigned long offset,
4456 varray_t *vp)
4457 {
4458 unsigned long istr;
4459 char *str_out;
4460 vlinks_t *str_link;
4461
4462 str_out = *buf + offset;
4463
4464 istr = 0;
4465
4466 for (str_link = vp->first;
4467 str_link != (vlinks_t *) NULL;
4468 str_link = str_link->next)
4469 {
4470 unsigned long str_cnt;
4471
4472 if (str_link->next == (vlinks_t *) NULL)
4473 str_cnt = vp->objects_last_page;
4474 else
4475 str_cnt = vp->objects_per_page;
4476
4477 if ((unsigned long)(*bufend - str_out) < str_cnt)
4478 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt);
4479
4480 memcpy (str_out, str_link->datum->byte, str_cnt);
4481 str_out += str_cnt;
4482 istr += str_cnt;
4483 }
4484
4485 return istr;
4486 }
4487
4488 /* Dump out the local strings. */
4489
4490 static unsigned long
4491 ecoff_build_ss (const struct ecoff_debug_swap *backend,
4492 char **buf,
4493 char **bufend,
4494 unsigned long offset)
4495 {
4496 long iss;
4497 vlinks_t *file_link;
4498
4499 iss = 0;
4500
4501 for (file_link = file_desc.first;
4502 file_link != (vlinks_t *) NULL;
4503 file_link = file_link->next)
4504 {
4505 int fil_cnt;
4506 efdr_t *fil_ptr;
4507 efdr_t *fil_end;
4508
4509 if (file_link->next == (vlinks_t *) NULL)
4510 fil_cnt = file_desc.objects_last_page;
4511 else
4512 fil_cnt = file_desc.objects_per_page;
4513 fil_ptr = file_link->datum->file;
4514 fil_end = fil_ptr + fil_cnt;
4515 for (; fil_ptr < fil_end; fil_ptr++)
4516 {
4517 long ss_cnt;
4518
4519 fil_ptr->fdr.issBase = iss;
4520 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss,
4521 &fil_ptr->strings);
4522 fil_ptr->fdr.cbSs = ss_cnt;
4523 iss += ss_cnt;
4524 }
4525 }
4526
4527 return ecoff_padding_adjust (backend, buf, bufend, offset + iss,
4528 (char **) NULL);
4529 }
4530
4531 /* Swap out the file descriptors. */
4532
4533 static unsigned long
4534 ecoff_build_fdr (const struct ecoff_debug_swap *backend,
4535 char **buf,
4536 char **bufend,
4537 unsigned long offset)
4538 {
4539 const bfd_size_type external_fdr_size = backend->external_fdr_size;
4540 void (* const swap_fdr_out) (bfd *, const FDR *, void *)
4541 = backend->swap_fdr_out;
4542 long ifile;
4543 char *fdr_out;
4544 vlinks_t *file_link;
4545
4546 ifile = 0;
4547
4548 fdr_out = *buf + offset;
4549
4550 for (file_link = file_desc.first;
4551 file_link != (vlinks_t *) NULL;
4552 file_link = file_link->next)
4553 {
4554 int fil_cnt;
4555 efdr_t *fil_ptr;
4556 efdr_t *fil_end;
4557
4558 if (file_link->next == (vlinks_t *) NULL)
4559 fil_cnt = file_desc.objects_last_page;
4560 else
4561 fil_cnt = file_desc.objects_per_page;
4562 fil_ptr = file_link->datum->file;
4563 fil_end = fil_ptr + fil_cnt;
4564 for (; fil_ptr < fil_end; fil_ptr++)
4565 {
4566 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size)
4567 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out,
4568 external_fdr_size);
4569 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out);
4570 fdr_out += external_fdr_size;
4571 ++ifile;
4572 }
4573 }
4574
4575 return offset + ifile * external_fdr_size;
4576 }
4577
4578 /* Set up the external symbols. These are supposed to be handled by
4579 the backend. This routine just gets the right information and
4580 calls a backend function to deal with it. */
4581
4582 static void
4583 ecoff_setup_ext (void)
4584 {
4585 symbolS *sym;
4586
4587 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4588 {
4589 if (symbol_get_obj (sym)->ecoff_symbol == NULL)
4590 continue;
4591
4592 /* If this is a local symbol, then force the fields to zero. */
4593 if (! S_IS_EXTERNAL (sym)
4594 && ! S_IS_WEAK (sym)
4595 && S_IS_DEFINED (sym))
4596 {
4597 struct localsym *lsym;
4598
4599 lsym = symbol_get_obj (sym)->ecoff_symbol;
4600 lsym->ecoff_sym.asym.value = 0;
4601 lsym->ecoff_sym.asym.st = (int) st_Nil;
4602 lsym->ecoff_sym.asym.sc = (int) sc_Nil;
4603 lsym->ecoff_sym.asym.index = indexNil;
4604 }
4605
4606 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym);
4607 }
4608 }
4609
4610 /* Build the ECOFF debugging information. */
4611
4612 unsigned long
4613 ecoff_build_debug (HDRR *hdr,
4614 char **bufp,
4615 const struct ecoff_debug_swap *backend)
4616 {
4617 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4618 tag_t *ptag;
4619 tag_t *ptag_next;
4620 efdr_t *fil_ptr;
4621 int end_warning;
4622 efdr_t *hold_file_ptr;
4623 proc_t *hold_proc_ptr;
4624 symbolS *sym;
4625 char *buf;
4626 char *bufend;
4627 unsigned long offset;
4628
4629 /* Make sure we have a file. */
4630 if (first_file == (efdr_t *) NULL)
4631 add_file ((const char *) NULL, 0, 1);
4632
4633 /* Handle any top level tags. */
4634 for (ptag = top_tag_head->first_tag;
4635 ptag != (tag_t *) NULL;
4636 ptag = ptag_next)
4637 {
4638 if (ptag->forward_ref != (forward_t *) NULL)
4639 add_unknown_tag (ptag);
4640
4641 ptag_next = ptag->same_block;
4642 ptag->hash_ptr->tag_ptr = ptag->same_name;
4643 free_tag (ptag);
4644 }
4645
4646 free_thead (top_tag_head);
4647
4648 /* Look through the symbols. Add debugging information for each
4649 symbol that has not already received it. */
4650 hold_file_ptr = cur_file_ptr;
4651 hold_proc_ptr = cur_proc_ptr;
4652 cur_proc_ptr = (proc_t *) NULL;
4653 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4654 {
4655 if (symbol_get_obj (sym)->ecoff_symbol != NULL
4656 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL
4657 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0)
4658 continue;
4659
4660 cur_file_ptr = symbol_get_obj (sym)->ecoff_file;
4661 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym,
4662 (bfd_vma) 0, S_GET_VALUE (sym), indexNil);
4663 }
4664 cur_proc_ptr = hold_proc_ptr;
4665 cur_file_ptr = hold_file_ptr;
4666
4667 /* Output an ending symbol for all the files. We have to do this
4668 here for the last file, so we may as well do it for all of the
4669 files. */
4670 end_warning = 0;
4671 for (fil_ptr = first_file;
4672 fil_ptr != (efdr_t *) NULL;
4673 fil_ptr = fil_ptr->next_file)
4674 {
4675 cur_file_ptr = fil_ptr;
4676 while (cur_file_ptr->cur_scope != (scope_t *) NULL
4677 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL)
4678 {
4679 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev;
4680 if (! end_warning && ! cur_file_ptr->fake)
4681 {
4682 as_warn (_("missing .end or .bend at end of file"));
4683 end_warning = 1;
4684 }
4685 }
4686 if (cur_file_ptr->cur_scope != (scope_t *) NULL)
4687 (void) add_ecoff_symbol ((const char *) NULL,
4688 st_End, sc_Text,
4689 (symbolS *) NULL,
4690 (bfd_vma) 0,
4691 (symint_t) 0,
4692 (symint_t) 0);
4693 }
4694
4695 /* Build the symbolic information. */
4696 offset = 0;
4697 buf = (char *) xmalloc (PAGE_SIZE);
4698 bufend = buf + PAGE_SIZE;
4699
4700 /* Build the line number information. */
4701 hdr->cbLineOffset = offset;
4702 offset = ecoff_build_lineno (backend, &buf, &bufend, offset,
4703 &hdr->ilineMax);
4704 hdr->cbLine = offset - hdr->cbLineOffset;
4705
4706 /* We don't use dense numbers at all. */
4707 hdr->idnMax = 0;
4708 hdr->cbDnOffset = 0;
4709
4710 /* We can't build the PDR table until we have built the symbols,
4711 because a PDR contains a symbol index. However, we set aside
4712 space at this point. */
4713 hdr->ipdMax = proc_cnt;
4714 hdr->cbPdOffset = offset;
4715 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size)
4716 (void) ecoff_add_bytes (&buf, &bufend, buf + offset,
4717 proc_cnt * external_pdr_size);
4718 offset += proc_cnt * external_pdr_size;
4719
4720 /* Build the local symbols. */
4721 hdr->cbSymOffset = offset;
4722 offset = ecoff_build_symbols (backend, &buf, &bufend, offset);
4723 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size;
4724
4725 /* Building the symbols initializes the symbol index in the PDR's.
4726 Now we can swap out the PDR's. */
4727 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset);
4728
4729 /* We don't use optimization symbols. */
4730 hdr->ioptMax = 0;
4731 hdr->cbOptOffset = 0;
4732
4733 /* Swap out the auxiliary type information. */
4734 hdr->cbAuxOffset = offset;
4735 offset = ecoff_build_aux (backend, &buf, &bufend, offset);
4736 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext);
4737
4738 /* Copy out the local strings. */
4739 hdr->cbSsOffset = offset;
4740 offset = ecoff_build_ss (backend, &buf, &bufend, offset);
4741 hdr->issMax = offset - hdr->cbSsOffset;
4742
4743 /* We don't use relative file descriptors. */
4744 hdr->crfd = 0;
4745 hdr->cbRfdOffset = 0;
4746
4747 /* Swap out the file descriptors. */
4748 hdr->cbFdOffset = offset;
4749 offset = ecoff_build_fdr (backend, &buf, &bufend, offset);
4750 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size;
4751
4752 /* Set up the external symbols, which are handled by the BFD back
4753 end. */
4754 hdr->issExtMax = 0;
4755 hdr->cbSsExtOffset = 0;
4756 hdr->iextMax = 0;
4757 hdr->cbExtOffset = 0;
4758 ecoff_setup_ext ();
4759
4760 know ((offset & (backend->debug_align - 1)) == 0);
4761
4762 /* FIXME: This value should be determined from the .verstamp directive,
4763 with reasonable defaults in config files. */
4764 #ifdef TC_ALPHA
4765 hdr->vstamp = 0x030b;
4766 #else
4767 hdr->vstamp = 0x020b;
4768 #endif
4769
4770 *bufp = buf;
4771 return offset;
4772 }
4773 \f
4774 /* Allocate a cluster of pages. */
4775
4776 #ifndef MALLOC_CHECK
4777
4778 static page_type *
4779 allocate_cluster (unsigned long npages)
4780 {
4781 page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE);
4782
4783 #ifdef ECOFF_DEBUG
4784 if (debug > 3)
4785 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value);
4786 #endif
4787
4788 memset (value, 0, npages * PAGE_USIZE);
4789
4790 return value;
4791 }
4792
4793 static page_type *cluster_ptr = NULL;
4794 static unsigned long pages_left = 0;
4795
4796 #endif /* MALLOC_CHECK */
4797
4798 /* Allocate one page (which is initialized to 0). */
4799
4800 static page_type *
4801 allocate_page (void)
4802 {
4803 #ifndef MALLOC_CHECK
4804
4805 if (pages_left == 0)
4806 {
4807 pages_left = MAX_CLUSTER_PAGES;
4808 cluster_ptr = allocate_cluster (pages_left);
4809 }
4810
4811 pages_left--;
4812 return cluster_ptr++;
4813
4814 #else /* MALLOC_CHECK */
4815
4816 page_type *ptr;
4817
4818 ptr = xmalloc (PAGE_USIZE);
4819 memset (ptr, 0, PAGE_USIZE);
4820 return ptr;
4821
4822 #endif /* MALLOC_CHECK */
4823 }
4824 \f
4825 /* Allocate scoping information. */
4826
4827 static scope_t *
4828 allocate_scope (void)
4829 {
4830 scope_t *ptr;
4831 static scope_t initial_scope;
4832
4833 #ifndef MALLOC_CHECK
4834
4835 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4836 if (ptr != (scope_t *) NULL)
4837 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free;
4838 else
4839 {
4840 int unallocated = alloc_counts[(int) alloc_type_scope].unallocated;
4841 page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page;
4842
4843 if (unallocated == 0)
4844 {
4845 unallocated = PAGE_SIZE / sizeof (scope_t);
4846 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page ();
4847 alloc_counts[(int) alloc_type_scope].total_pages++;
4848 }
4849
4850 ptr = &cur_page->scope[--unallocated];
4851 alloc_counts[(int) alloc_type_scope].unallocated = unallocated;
4852 }
4853
4854 #else
4855
4856 ptr = (scope_t *) xmalloc (sizeof (scope_t));
4857
4858 #endif
4859
4860 alloc_counts[(int) alloc_type_scope].total_alloc++;
4861 *ptr = initial_scope;
4862 return ptr;
4863 }
4864
4865 /* Free scoping information. */
4866
4867 static void
4868 free_scope (scope_t *ptr)
4869 {
4870 alloc_counts[(int) alloc_type_scope].total_free++;
4871
4872 #ifndef MALLOC_CHECK
4873 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4874 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr;
4875 #else
4876 free ((void *) ptr);
4877 #endif
4878 }
4879 \f
4880 /* Allocate links for pages in a virtual array. */
4881
4882 static vlinks_t *
4883 allocate_vlinks (void)
4884 {
4885 vlinks_t *ptr;
4886 static vlinks_t initial_vlinks;
4887
4888 #ifndef MALLOC_CHECK
4889
4890 int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated;
4891 page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page;
4892
4893 if (unallocated == 0)
4894 {
4895 unallocated = PAGE_SIZE / sizeof (vlinks_t);
4896 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page ();
4897 alloc_counts[(int) alloc_type_vlinks].total_pages++;
4898 }
4899
4900 ptr = &cur_page->vlinks[--unallocated];
4901 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated;
4902
4903 #else
4904
4905 ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t));
4906
4907 #endif
4908
4909 alloc_counts[(int) alloc_type_vlinks].total_alloc++;
4910 *ptr = initial_vlinks;
4911 return ptr;
4912 }
4913 \f
4914 /* Allocate string hash buckets. */
4915
4916 static shash_t *
4917 allocate_shash (void)
4918 {
4919 shash_t *ptr;
4920 static shash_t initial_shash;
4921
4922 #ifndef MALLOC_CHECK
4923
4924 int unallocated = alloc_counts[(int) alloc_type_shash].unallocated;
4925 page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page;
4926
4927 if (unallocated == 0)
4928 {
4929 unallocated = PAGE_SIZE / sizeof (shash_t);
4930 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page ();
4931 alloc_counts[(int) alloc_type_shash].total_pages++;
4932 }
4933
4934 ptr = &cur_page->shash[--unallocated];
4935 alloc_counts[(int) alloc_type_shash].unallocated = unallocated;
4936
4937 #else
4938
4939 ptr = (shash_t *) xmalloc (sizeof (shash_t));
4940
4941 #endif
4942
4943 alloc_counts[(int) alloc_type_shash].total_alloc++;
4944 *ptr = initial_shash;
4945 return ptr;
4946 }
4947 \f
4948 /* Allocate type hash buckets. */
4949
4950 static thash_t *
4951 allocate_thash (void)
4952 {
4953 thash_t *ptr;
4954 static thash_t initial_thash;
4955
4956 #ifndef MALLOC_CHECK
4957
4958 int unallocated = alloc_counts[(int) alloc_type_thash].unallocated;
4959 page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page;
4960
4961 if (unallocated == 0)
4962 {
4963 unallocated = PAGE_SIZE / sizeof (thash_t);
4964 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page ();
4965 alloc_counts[(int) alloc_type_thash].total_pages++;
4966 }
4967
4968 ptr = &cur_page->thash[--unallocated];
4969 alloc_counts[(int) alloc_type_thash].unallocated = unallocated;
4970
4971 #else
4972
4973 ptr = (thash_t *) xmalloc (sizeof (thash_t));
4974
4975 #endif
4976
4977 alloc_counts[(int) alloc_type_thash].total_alloc++;
4978 *ptr = initial_thash;
4979 return ptr;
4980 }
4981 \f
4982 /* Allocate structure, union, or enum tag information. */
4983
4984 static tag_t *
4985 allocate_tag (void)
4986 {
4987 tag_t *ptr;
4988 static tag_t initial_tag;
4989
4990 #ifndef MALLOC_CHECK
4991
4992 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
4993 if (ptr != (tag_t *) NULL)
4994 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free;
4995 else
4996 {
4997 int unallocated = alloc_counts[(int) alloc_type_tag].unallocated;
4998 page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page;
4999
5000 if (unallocated == 0)
5001 {
5002 unallocated = PAGE_SIZE / sizeof (tag_t);
5003 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page ();
5004 alloc_counts[(int) alloc_type_tag].total_pages++;
5005 }
5006
5007 ptr = &cur_page->tag[--unallocated];
5008 alloc_counts[(int) alloc_type_tag].unallocated = unallocated;
5009 }
5010
5011 #else
5012
5013 ptr = (tag_t *) xmalloc (sizeof (tag_t));
5014
5015 #endif
5016
5017 alloc_counts[(int) alloc_type_tag].total_alloc++;
5018 *ptr = initial_tag;
5019 return ptr;
5020 }
5021
5022 /* Free scoping information. */
5023
5024 static void
5025 free_tag (tag_t *ptr)
5026 {
5027 alloc_counts[(int) alloc_type_tag].total_free++;
5028
5029 #ifndef MALLOC_CHECK
5030 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
5031 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr;
5032 #else
5033 free ((PTR_T) ptr);
5034 #endif
5035 }
5036 \f
5037 /* Allocate forward reference to a yet unknown tag. */
5038
5039 static forward_t *
5040 allocate_forward (void)
5041 {
5042 forward_t *ptr;
5043 static forward_t initial_forward;
5044
5045 #ifndef MALLOC_CHECK
5046
5047 int unallocated = alloc_counts[(int) alloc_type_forward].unallocated;
5048 page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page;
5049
5050 if (unallocated == 0)
5051 {
5052 unallocated = PAGE_SIZE / sizeof (forward_t);
5053 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page ();
5054 alloc_counts[(int) alloc_type_forward].total_pages++;
5055 }
5056
5057 ptr = &cur_page->forward[--unallocated];
5058 alloc_counts[(int) alloc_type_forward].unallocated = unallocated;
5059
5060 #else
5061
5062 ptr = (forward_t *) xmalloc (sizeof (forward_t));
5063
5064 #endif
5065
5066 alloc_counts[(int) alloc_type_forward].total_alloc++;
5067 *ptr = initial_forward;
5068 return ptr;
5069 }
5070 \f
5071 /* Allocate head of type hash list. */
5072
5073 static thead_t *
5074 allocate_thead (void)
5075 {
5076 thead_t *ptr;
5077 static thead_t initial_thead;
5078
5079 #ifndef MALLOC_CHECK
5080
5081 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5082 if (ptr != (thead_t *) NULL)
5083 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free;
5084 else
5085 {
5086 int unallocated = alloc_counts[(int) alloc_type_thead].unallocated;
5087 page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page;
5088
5089 if (unallocated == 0)
5090 {
5091 unallocated = PAGE_SIZE / sizeof (thead_t);
5092 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page ();
5093 alloc_counts[(int) alloc_type_thead].total_pages++;
5094 }
5095
5096 ptr = &cur_page->thead[--unallocated];
5097 alloc_counts[(int) alloc_type_thead].unallocated = unallocated;
5098 }
5099
5100 #else
5101
5102 ptr = (thead_t *) xmalloc (sizeof (thead_t));
5103
5104 #endif
5105
5106 alloc_counts[(int) alloc_type_thead].total_alloc++;
5107 *ptr = initial_thead;
5108 return ptr;
5109 }
5110
5111 /* Free scoping information. */
5112
5113 static void
5114 free_thead (thead_t *ptr)
5115 {
5116 alloc_counts[(int) alloc_type_thead].total_free++;
5117
5118 #ifndef MALLOC_CHECK
5119 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5120 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr;
5121 #else
5122 free ((PTR_T) ptr);
5123 #endif
5124 }
5125 \f
5126 static lineno_list_t *
5127 allocate_lineno_list (void)
5128 {
5129 lineno_list_t *ptr;
5130 static lineno_list_t initial_lineno_list;
5131
5132 #ifndef MALLOC_CHECK
5133
5134 int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated;
5135 page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page;
5136
5137 if (unallocated == 0)
5138 {
5139 unallocated = PAGE_SIZE / sizeof (lineno_list_t);
5140 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page ();
5141 alloc_counts[(int) alloc_type_lineno].total_pages++;
5142 }
5143
5144 ptr = &cur_page->lineno[--unallocated];
5145 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated;
5146
5147 #else
5148
5149 ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t));
5150
5151 #endif
5152
5153 alloc_counts[(int) alloc_type_lineno].total_alloc++;
5154 *ptr = initial_lineno_list;
5155 return ptr;
5156 }
5157
5158 void
5159 ecoff_set_gp_prolog_size (int sz)
5160 {
5161 if (cur_proc_ptr == 0)
5162 return;
5163
5164 cur_proc_ptr->pdr.gp_prologue = sz;
5165 if (cur_proc_ptr->pdr.gp_prologue != sz)
5166 {
5167 as_warn (_("GP prologue size exceeds field size, using 0 instead"));
5168 cur_proc_ptr->pdr.gp_prologue = 0;
5169 }
5170
5171 cur_proc_ptr->pdr.gp_used = 1;
5172 }
5173
5174 int
5175 ecoff_no_current_file (void)
5176 {
5177 return cur_file_ptr == (efdr_t *) NULL;
5178 }
5179
5180 void
5181 ecoff_generate_asm_lineno (void)
5182 {
5183 unsigned int lineno;
5184 char *filename;
5185 lineno_list_t *list;
5186
5187 as_where (&filename, &lineno);
5188
5189 if (current_stabs_filename == (char *) NULL
5190 || filename_cmp (current_stabs_filename, filename))
5191 add_file (filename, 0, 1);
5192
5193 list = allocate_lineno_list ();
5194
5195 list->next = (lineno_list_t *) NULL;
5196 list->file = cur_file_ptr;
5197 list->proc = cur_proc_ptr;
5198 list->frag = frag_now;
5199 list->paddr = frag_now_fix ();
5200 list->lineno = lineno;
5201
5202 /* We don't want to merge files which have line numbers. */
5203 cur_file_ptr->fdr.fMerge = 0;
5204
5205 /* A .loc directive will sometimes appear before a .ent directive,
5206 which means that cur_proc_ptr will be NULL here. Arrange to
5207 patch this up. */
5208 if (cur_proc_ptr == (proc_t *) NULL)
5209 {
5210 lineno_list_t **pl;
5211
5212 pl = &noproc_lineno;
5213 while (*pl != (lineno_list_t *) NULL)
5214 pl = &(*pl)->next;
5215 *pl = list;
5216 }
5217 else
5218 {
5219 last_lineno = list;
5220 *last_lineno_ptr = list;
5221 last_lineno_ptr = &list->next;
5222 }
5223 }
5224
5225 #else
5226
5227 void
5228 ecoff_generate_asm_lineno (void)
5229 {
5230 }
5231
5232 #endif /* ECOFF_DEBUGGING */
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