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gas/testsuite/
[deliverable/binutils-gdb.git] / gas / ecoff.c
1 /* ECOFF debugging support.
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
4 Contributed by Cygnus Support.
5 This file was put together by Ian Lance Taylor <ian@cygnus.com>. A
6 good deal of it comes directly from mips-tfile.c, by Michael
7 Meissner <meissner@osf.org>.
8
9 This file is part of GAS.
10
11 GAS is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2, or (at your option)
14 any later version.
15
16 GAS is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with GAS; see the file COPYING. If not, write to the Free
23 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
24 02111-1307, USA. */
25
26 #include "as.h"
27
28 /* This file is compiled conditionally for those targets which use
29 ECOFF debugging information (e.g., MIPS ECOFF, MIPS ELF, Alpha
30 ECOFF). */
31
32 #include "ecoff.h"
33
34 #ifdef ECOFF_DEBUGGING
35
36 #include "coff/internal.h"
37 #include "coff/symconst.h"
38 #include "aout/stab_gnu.h"
39
40 #include "safe-ctype.h"
41
42 /* Why isn't this in coff/sym.h? */
43 #define ST_RFDESCAPE 0xfff
44
45 /* This file constructs the information used by the ECOFF debugging
46 format. It just builds a large block of data.
47
48 We support both ECOFF style debugging and stabs debugging (the
49 stabs symbols are encapsulated in ECOFF symbols). This should let
50 us handle anything the compiler might throw at us. */
51
52 /* Here is a brief description of the MIPS ECOFF symbol table, by
53 Michael Meissner. The MIPS symbol table has the following pieces:
54
55 Symbolic Header
56 |
57 +-- Auxiliary Symbols
58 |
59 +-- Dense number table
60 |
61 +-- Optimizer Symbols
62 |
63 +-- External Strings
64 |
65 +-- External Symbols
66 |
67 +-- Relative file descriptors
68 |
69 +-- File table
70 |
71 +-- Procedure table
72 |
73 +-- Line number table
74 |
75 +-- Local Strings
76 |
77 +-- Local Symbols
78
79 The symbolic header points to each of the other tables, and also
80 contains the number of entries. It also contains a magic number
81 and MIPS compiler version number, such as 2.0.
82
83 The auxiliary table is a series of 32 bit integers, that are
84 referenced as needed from the local symbol table. Unlike standard
85 COFF, the aux. information does not follow the symbol that uses
86 it, but rather is a separate table. In theory, this would allow
87 the MIPS compilers to collapse duplicate aux. entries, but I've not
88 noticed this happening with the 1.31 compiler suite. The different
89 types of aux. entries are:
90
91 1) dnLow: Low bound on array dimension.
92
93 2) dnHigh: High bound on array dimension.
94
95 3) isym: Index to the local symbol which is the start of the
96 function for the end of function first aux. entry.
97
98 4) width: Width of structures and bitfields.
99
100 5) count: Count of ranges for variant part.
101
102 6) rndx: A relative index into the symbol table. The relative
103 index field has two parts: rfd which is a pointer into the
104 relative file index table or ST_RFDESCAPE which says the next
105 aux. entry is the file number, and index: which is the pointer
106 into the local symbol within a given file table. This is for
107 things like references to types defined in another file.
108
109 7) Type information: This is like the COFF type bits, except it
110 is 32 bits instead of 16; they still have room to add new
111 basic types; and they can handle more than 6 levels of array,
112 pointer, function, etc. Each type information field contains
113 the following structure members:
114
115 a) fBitfield: a bit that says this is a bitfield, and the
116 size in bits follows as the next aux. entry.
117
118 b) continued: a bit that says the next aux. entry is a
119 continuation of the current type information (in case
120 there are more than 6 levels of array/ptr/function).
121
122 c) bt: an integer containing the base type before adding
123 array, pointer, function, etc. qualifiers. The
124 current base types that I have documentation for are:
125
126 btNil -- undefined
127 btAdr -- address - integer same size as ptr
128 btChar -- character
129 btUChar -- unsigned character
130 btShort -- short
131 btUShort -- unsigned short
132 btInt -- int
133 btUInt -- unsigned int
134 btLong -- long
135 btULong -- unsigned long
136 btFloat -- float (real)
137 btDouble -- Double (real)
138 btStruct -- Structure (Record)
139 btUnion -- Union (variant)
140 btEnum -- Enumerated
141 btTypedef -- defined via a typedef isymRef
142 btRange -- subrange of int
143 btSet -- pascal sets
144 btComplex -- fortran complex
145 btDComplex -- fortran double complex
146 btIndirect -- forward or unnamed typedef
147 btFixedDec -- Fixed Decimal
148 btFloatDec -- Float Decimal
149 btString -- Varying Length Character String
150 btBit -- Aligned Bit String
151 btPicture -- Picture
152 btVoid -- Void (MIPS cc revision >= 2.00)
153
154 d) tq0 - tq5: type qualifier fields as needed. The
155 current type qualifier fields I have documentation for
156 are:
157
158 tqNil -- no more qualifiers
159 tqPtr -- pointer
160 tqProc -- procedure
161 tqArray -- array
162 tqFar -- 8086 far pointers
163 tqVol -- volatile
164
165 The dense number table is used in the front ends, and disappears by
166 the time the .o is created.
167
168 With the 1.31 compiler suite, the optimization symbols don't seem
169 to be used as far as I can tell.
170
171 The linker is the first entity that creates the relative file
172 descriptor table, and I believe it is used so that the individual
173 file table pointers don't have to be rewritten when the objects are
174 merged together into the program file.
175
176 Unlike COFF, the basic symbol & string tables are split into
177 external and local symbols/strings. The relocation information
178 only goes off of the external symbol table, and the debug
179 information only goes off of the internal symbol table. The
180 external symbols can have links to an appropriate file index and
181 symbol within the file to give it the appropriate type information.
182 Because of this, the external symbols are actually larger than the
183 internal symbols (to contain the link information), and contain the
184 local symbol structure as a member, though this member is not the
185 first member of the external symbol structure (!). I suspect this
186 split is to make strip easier to deal with.
187
188 Each file table has offsets for where the line numbers, local
189 strings, local symbols, and procedure table starts from within the
190 global tables, and the indexs are reset to 0 for each of those
191 tables for the file.
192
193 The procedure table contains the binary equivalents of the .ent
194 (start of the function address), .frame (what register is the
195 virtual frame pointer, constant offset from the register to obtain
196 the VFP, and what register holds the return address), .mask/.fmask
197 (bitmask of saved registers, and where the first register is stored
198 relative to the VFP) assembler directives. It also contains the
199 low and high bounds of the line numbers if debugging is turned on.
200
201 The line number table is a compressed form of the normal COFF line
202 table. Each line number entry is either 1 or 3 bytes long, and
203 contains a signed delta from the previous line, and an unsigned
204 count of the number of instructions this statement takes.
205
206 The local symbol table contains the following fields:
207
208 1) iss: index to the local string table giving the name of the
209 symbol.
210
211 2) value: value of the symbol (address, register number, etc.).
212
213 3) st: symbol type. The current symbol types are:
214
215 stNil -- Nuthin' special
216 stGlobal -- external symbol
217 stStatic -- static
218 stParam -- procedure argument
219 stLocal -- local variable
220 stLabel -- label
221 stProc -- External Procedure
222 stBlock -- beginning of block
223 stEnd -- end (of anything)
224 stMember -- member (of anything)
225 stTypedef -- type definition
226 stFile -- file name
227 stRegReloc -- register relocation
228 stForward -- forwarding address
229 stStaticProc -- Static procedure
230 stConstant -- const
231
232 4) sc: storage class. The current storage classes are:
233
234 scText -- text symbol
235 scData -- initialized data symbol
236 scBss -- un-initialized data symbol
237 scRegister -- value of symbol is register number
238 scAbs -- value of symbol is absolute
239 scUndefined -- who knows?
240 scCdbLocal -- variable's value is IN se->va.??
241 scBits -- this is a bit field
242 scCdbSystem -- value is IN debugger's address space
243 scRegImage -- register value saved on stack
244 scInfo -- symbol contains debugger information
245 scUserStruct -- addr in struct user for current process
246 scSData -- load time only small data
247 scSBss -- load time only small common
248 scRData -- load time only read only data
249 scVar -- Var parameter (fortranpascal)
250 scCommon -- common variable
251 scSCommon -- small common
252 scVarRegister -- Var parameter in a register
253 scVariant -- Variant record
254 scSUndefined -- small undefined(external) data
255 scInit -- .init section symbol
256
257 5) index: pointer to a local symbol or aux. entry.
258
259 For the following program:
260
261 #include <stdio.h>
262
263 main(){
264 printf("Hello World!\n");
265 return 0;
266 }
267
268 Mips-tdump produces the following information:
269
270 Global file header:
271 magic number 0x162
272 # sections 2
273 timestamp 645311799, Wed Jun 13 17:16:39 1990
274 symbolic header offset 284
275 symbolic header size 96
276 optional header 56
277 flags 0x0
278
279 Symbolic header, magic number = 0x7009, vstamp = 1.31:
280
281 Info Offset Number Bytes
282 ==== ====== ====== =====
283
284 Line numbers 380 4 4 [13]
285 Dense numbers 0 0 0
286 Procedures Tables 384 1 52
287 Local Symbols 436 16 192
288 Optimization Symbols 0 0 0
289 Auxiliary Symbols 628 39 156
290 Local Strings 784 80 80
291 External Strings 864 144 144
292 File Tables 1008 2 144
293 Relative Files 0 0 0
294 External Symbols 1152 20 320
295
296 File #0, "hello2.c"
297
298 Name index = 1 Readin = No
299 Merge = No Endian = LITTLE
300 Debug level = G2 Language = C
301 Adr = 0x00000000
302
303 Info Start Number Size Offset
304 ==== ===== ====== ==== ======
305 Local strings 0 15 15 784
306 Local symbols 0 6 72 436
307 Line numbers 0 13 13 380
308 Optimization symbols 0 0 0 0
309 Procedures 0 1 52 384
310 Auxiliary symbols 0 14 56 628
311 Relative Files 0 0 0 0
312
313 There are 6 local symbols, starting at 436
314
315 Symbol# 0: "hello2.c"
316 End+1 symbol = 6
317 String index = 1
318 Storage class = Text Index = 6
319 Symbol type = File Value = 0
320
321 Symbol# 1: "main"
322 End+1 symbol = 5
323 Type = int
324 String index = 10
325 Storage class = Text Index = 12
326 Symbol type = Proc Value = 0
327
328 Symbol# 2: ""
329 End+1 symbol = 4
330 String index = 0
331 Storage class = Text Index = 4
332 Symbol type = Block Value = 8
333
334 Symbol# 3: ""
335 First symbol = 2
336 String index = 0
337 Storage class = Text Index = 2
338 Symbol type = End Value = 28
339
340 Symbol# 4: "main"
341 First symbol = 1
342 String index = 10
343 Storage class = Text Index = 1
344 Symbol type = End Value = 52
345
346 Symbol# 5: "hello2.c"
347 First symbol = 0
348 String index = 1
349 Storage class = Text Index = 0
350 Symbol type = End Value = 0
351
352 There are 14 auxiliary table entries, starting at 628.
353
354 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
355 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
356 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0]
357 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0]
358 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
359 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0]
360 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0]
361 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0]
362 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0]
363 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0]
364 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0]
365 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0]
366 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0]
367 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
368
369 There are 1 procedure descriptor entries, starting at 0.
370
371 Procedure descriptor 0:
372 Name index = 10 Name = "main"
373 .mask 0x80000000,-4 .fmask 0x00000000,0
374 .frame $29,24,$31
375 Opt. start = -1 Symbols start = 1
376 First line # = 3 Last line # = 6
377 Line Offset = 0 Address = 0x00000000
378
379 There are 4 bytes holding line numbers, starting at 380.
380 Line 3, delta 0, count 2
381 Line 4, delta 1, count 3
382 Line 5, delta 1, count 2
383 Line 6, delta 1, count 6
384
385 File #1, "/usr/include/stdio.h"
386
387 Name index = 1 Readin = No
388 Merge = Yes Endian = LITTLE
389 Debug level = G2 Language = C
390 Adr = 0x00000000
391
392 Info Start Number Size Offset
393 ==== ===== ====== ==== ======
394 Local strings 15 65 65 799
395 Local symbols 6 10 120 508
396 Line numbers 0 0 0 380
397 Optimization symbols 0 0 0 0
398 Procedures 1 0 0 436
399 Auxiliary symbols 14 25 100 684
400 Relative Files 0 0 0 0
401
402 There are 10 local symbols, starting at 442
403
404 Symbol# 0: "/usr/include/stdio.h"
405 End+1 symbol = 10
406 String index = 1
407 Storage class = Text Index = 10
408 Symbol type = File Value = 0
409
410 Symbol# 1: "_iobuf"
411 End+1 symbol = 9
412 String index = 22
413 Storage class = Info Index = 9
414 Symbol type = Block Value = 20
415
416 Symbol# 2: "_cnt"
417 Type = int
418 String index = 29
419 Storage class = Info Index = 4
420 Symbol type = Member Value = 0
421
422 Symbol# 3: "_ptr"
423 Type = ptr to char
424 String index = 34
425 Storage class = Info Index = 15
426 Symbol type = Member Value = 32
427
428 Symbol# 4: "_base"
429 Type = ptr to char
430 String index = 39
431 Storage class = Info Index = 16
432 Symbol type = Member Value = 64
433
434 Symbol# 5: "_bufsiz"
435 Type = int
436 String index = 45
437 Storage class = Info Index = 4
438 Symbol type = Member Value = 96
439
440 Symbol# 6: "_flag"
441 Type = short
442 String index = 53
443 Storage class = Info Index = 3
444 Symbol type = Member Value = 128
445
446 Symbol# 7: "_file"
447 Type = char
448 String index = 59
449 Storage class = Info Index = 2
450 Symbol type = Member Value = 144
451
452 Symbol# 8: ""
453 First symbol = 1
454 String index = 0
455 Storage class = Info Index = 1
456 Symbol type = End Value = 0
457
458 Symbol# 9: "/usr/include/stdio.h"
459 First symbol = 0
460 String index = 1
461 Storage class = Text Index = 0
462 Symbol type = End Value = 0
463
464 There are 25 auxiliary table entries, starting at 642.
465
466 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f]
467 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
468 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
469 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0]
470 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1]
471 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
472 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4]
473 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
474 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
475 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0]
476 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0]
477 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
478 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
479 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
480 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
481 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
482 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
483 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
484 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
485 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
486 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
487 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
488 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
489 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
490 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
491
492 There are 0 procedure descriptor entries, starting at 1.
493
494 There are 20 external symbols, starting at 1152
495
496 Symbol# 0: "_iob"
497 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 }
498 String index = 0 Ifd = 1
499 Storage class = Nil Index = 17
500 Symbol type = Global Value = 60
501
502 Symbol# 1: "fopen"
503 String index = 5 Ifd = 1
504 Storage class = Nil Index = 1048575
505 Symbol type = Proc Value = 0
506
507 Symbol# 2: "fdopen"
508 String index = 11 Ifd = 1
509 Storage class = Nil Index = 1048575
510 Symbol type = Proc Value = 0
511
512 Symbol# 3: "freopen"
513 String index = 18 Ifd = 1
514 Storage class = Nil Index = 1048575
515 Symbol type = Proc Value = 0
516
517 Symbol# 4: "popen"
518 String index = 26 Ifd = 1
519 Storage class = Nil Index = 1048575
520 Symbol type = Proc Value = 0
521
522 Symbol# 5: "tmpfile"
523 String index = 32 Ifd = 1
524 Storage class = Nil Index = 1048575
525 Symbol type = Proc Value = 0
526
527 Symbol# 6: "ftell"
528 String index = 40 Ifd = 1
529 Storage class = Nil Index = 1048575
530 Symbol type = Proc Value = 0
531
532 Symbol# 7: "rewind"
533 String index = 46 Ifd = 1
534 Storage class = Nil Index = 1048575
535 Symbol type = Proc Value = 0
536
537 Symbol# 8: "setbuf"
538 String index = 53 Ifd = 1
539 Storage class = Nil Index = 1048575
540 Symbol type = Proc Value = 0
541
542 Symbol# 9: "setbuffer"
543 String index = 60 Ifd = 1
544 Storage class = Nil Index = 1048575
545 Symbol type = Proc Value = 0
546
547 Symbol# 10: "setlinebuf"
548 String index = 70 Ifd = 1
549 Storage class = Nil Index = 1048575
550 Symbol type = Proc Value = 0
551
552 Symbol# 11: "fgets"
553 String index = 81 Ifd = 1
554 Storage class = Nil Index = 1048575
555 Symbol type = Proc Value = 0
556
557 Symbol# 12: "gets"
558 String index = 87 Ifd = 1
559 Storage class = Nil Index = 1048575
560 Symbol type = Proc Value = 0
561
562 Symbol# 13: "ctermid"
563 String index = 92 Ifd = 1
564 Storage class = Nil Index = 1048575
565 Symbol type = Proc Value = 0
566
567 Symbol# 14: "cuserid"
568 String index = 100 Ifd = 1
569 Storage class = Nil Index = 1048575
570 Symbol type = Proc Value = 0
571
572 Symbol# 15: "tempnam"
573 String index = 108 Ifd = 1
574 Storage class = Nil Index = 1048575
575 Symbol type = Proc Value = 0
576
577 Symbol# 16: "tmpnam"
578 String index = 116 Ifd = 1
579 Storage class = Nil Index = 1048575
580 Symbol type = Proc Value = 0
581
582 Symbol# 17: "sprintf"
583 String index = 123 Ifd = 1
584 Storage class = Nil Index = 1048575
585 Symbol type = Proc Value = 0
586
587 Symbol# 18: "main"
588 Type = int
589 String index = 131 Ifd = 0
590 Storage class = Text Index = 1
591 Symbol type = Proc Value = 0
592
593 Symbol# 19: "printf"
594 String index = 136 Ifd = 0
595 Storage class = Undefined Index = 1048575
596 Symbol type = Proc Value = 0
597
598 The following auxiliary table entries were unused:
599
600 #0 0 0x00000000 void
601 #2 8 0x00000008 char
602 #3 16 0x00000010 short
603 #4 24 0x00000018 int
604 #5 32 0x00000020 long
605 #6 40 0x00000028 float
606 #7 44 0x0000002c double
607 #8 12 0x0000000c unsigned char
608 #9 20 0x00000014 unsigned short
609 #10 28 0x0000001c unsigned int
610 #11 36 0x00000024 unsigned long
611 #14 0 0x00000000 void
612 #15 24 0x00000018 int
613 #19 32 0x00000020 long
614 #20 40 0x00000028 float
615 #21 44 0x0000002c double
616 #22 12 0x0000000c unsigned char
617 #23 20 0x00000014 unsigned short
618 #24 28 0x0000001c unsigned int
619 #25 36 0x00000024 unsigned long
620 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 }
621 */
622 \f
623 /* Redefinition of of storage classes as an enumeration for better
624 debugging. */
625
626 typedef enum sc {
627 sc_Nil = scNil, /* no storage class */
628 sc_Text = scText, /* text symbol */
629 sc_Data = scData, /* initialized data symbol */
630 sc_Bss = scBss, /* un-initialized data symbol */
631 sc_Register = scRegister, /* value of symbol is register number */
632 sc_Abs = scAbs, /* value of symbol is absolute */
633 sc_Undefined = scUndefined, /* who knows? */
634 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */
635 sc_Bits = scBits, /* this is a bit field */
636 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */
637 sc_RegImage = scRegImage, /* register value saved on stack */
638 sc_Info = scInfo, /* symbol contains debugger information */
639 sc_UserStruct = scUserStruct, /* addr in struct user for current process */
640 sc_SData = scSData, /* load time only small data */
641 sc_SBss = scSBss, /* load time only small common */
642 sc_RData = scRData, /* load time only read only data */
643 sc_Var = scVar, /* Var parameter (fortran,pascal) */
644 sc_Common = scCommon, /* common variable */
645 sc_SCommon = scSCommon, /* small common */
646 sc_VarRegister = scVarRegister, /* Var parameter in a register */
647 sc_Variant = scVariant, /* Variant record */
648 sc_SUndefined = scSUndefined, /* small undefined(external) data */
649 sc_Init = scInit, /* .init section symbol */
650 sc_Max = scMax /* Max storage class+1 */
651 } sc_t;
652
653 /* Redefinition of symbol type. */
654
655 typedef enum st {
656 st_Nil = stNil, /* Nuthin' special */
657 st_Global = stGlobal, /* external symbol */
658 st_Static = stStatic, /* static */
659 st_Param = stParam, /* procedure argument */
660 st_Local = stLocal, /* local variable */
661 st_Label = stLabel, /* label */
662 st_Proc = stProc, /* " " Procedure */
663 st_Block = stBlock, /* beginning of block */
664 st_End = stEnd, /* end (of anything) */
665 st_Member = stMember, /* member (of anything - struct/union/enum */
666 st_Typedef = stTypedef, /* type definition */
667 st_File = stFile, /* file name */
668 st_RegReloc = stRegReloc, /* register relocation */
669 st_Forward = stForward, /* forwarding address */
670 st_StaticProc = stStaticProc, /* load time only static procs */
671 st_Constant = stConstant, /* const */
672 st_Str = stStr, /* string */
673 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */
674 st_Expr = stExpr, /* 2+2 vs. 4 */
675 st_Type = stType, /* post-coercion SER */
676 st_Max = stMax /* max type+1 */
677 } st_t;
678
679 /* Redefinition of type qualifiers. */
680
681 typedef enum tq {
682 tq_Nil = tqNil, /* bt is what you see */
683 tq_Ptr = tqPtr, /* pointer */
684 tq_Proc = tqProc, /* procedure */
685 tq_Array = tqArray, /* duh */
686 tq_Far = tqFar, /* longer addressing - 8086/8 land */
687 tq_Vol = tqVol, /* volatile */
688 tq_Max = tqMax /* Max type qualifier+1 */
689 } tq_t;
690
691 /* Redefinition of basic types. */
692
693 typedef enum bt {
694 bt_Nil = btNil, /* undefined */
695 bt_Adr = btAdr, /* address - integer same size as pointer */
696 bt_Char = btChar, /* character */
697 bt_UChar = btUChar, /* unsigned character */
698 bt_Short = btShort, /* short */
699 bt_UShort = btUShort, /* unsigned short */
700 bt_Int = btInt, /* int */
701 bt_UInt = btUInt, /* unsigned int */
702 bt_Long = btLong, /* long */
703 bt_ULong = btULong, /* unsigned long */
704 bt_Float = btFloat, /* float (real) */
705 bt_Double = btDouble, /* Double (real) */
706 bt_Struct = btStruct, /* Structure (Record) */
707 bt_Union = btUnion, /* Union (variant) */
708 bt_Enum = btEnum, /* Enumerated */
709 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */
710 bt_Range = btRange, /* subrange of int */
711 bt_Set = btSet, /* pascal sets */
712 bt_Complex = btComplex, /* fortran complex */
713 bt_DComplex = btDComplex, /* fortran double complex */
714 bt_Indirect = btIndirect, /* forward or unnamed typedef */
715 bt_FixedDec = btFixedDec, /* Fixed Decimal */
716 bt_FloatDec = btFloatDec, /* Float Decimal */
717 bt_String = btString, /* Varying Length Character String */
718 bt_Bit = btBit, /* Aligned Bit String */
719 bt_Picture = btPicture, /* Picture */
720 bt_Void = btVoid, /* Void */
721 bt_Max = btMax /* Max basic type+1 */
722 } bt_t;
723
724 #define N_TQ itqMax
725
726 /* States for whether to hash type or not. */
727 typedef enum hash_state {
728 hash_no = 0, /* Don't hash type */
729 hash_yes = 1, /* OK to hash type, or use previous hash */
730 hash_record = 2 /* OK to record hash, but don't use prev. */
731 } hash_state_t;
732
733 /* Types of different sized allocation requests. */
734 enum alloc_type {
735 alloc_type_none, /* dummy value */
736 alloc_type_scope, /* nested scopes linked list */
737 alloc_type_vlinks, /* glue linking pages in varray */
738 alloc_type_shash, /* string hash element */
739 alloc_type_thash, /* type hash element */
740 alloc_type_tag, /* struct/union/tag element */
741 alloc_type_forward, /* element to hold unknown tag */
742 alloc_type_thead, /* head of type hash list */
743 alloc_type_varray, /* general varray allocation */
744 alloc_type_lineno, /* line number list */
745 alloc_type_last /* last+1 element for array bounds */
746 };
747
748 /* Types of auxiliary type information. */
749 enum aux_type {
750 aux_tir, /* TIR type information */
751 aux_rndx, /* relative index into symbol table */
752 aux_dnLow, /* low dimension */
753 aux_dnHigh, /* high dimension */
754 aux_isym, /* symbol table index (end of proc) */
755 aux_iss, /* index into string space (not used) */
756 aux_width, /* width for non-default sized struc fields */
757 aux_count /* count of ranges for variant arm */
758 };
759 \f
760 /* Structures to provide n-number of virtual arrays, each of which can
761 grow linearly, and which are written in the object file as
762 sequential pages. On systems with a BSD malloc, the
763 MAX_CLUSTER_PAGES should be 1 less than a power of two, since
764 malloc adds it's overhead, and rounds up to the next power of 2.
765 Pages are linked together via a linked list.
766
767 If PAGE_SIZE is > 4096, the string length in the shash_t structure
768 can't be represented (assuming there are strings > 4096 bytes). */
769
770 /* FIXME: Yes, there can be such strings while emitting C++ class debug
771 info. Templates are the offender here, the test case in question
772 having a mangled class name of
773
774 t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\
775 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey
776
777 Repeat that a couple dozen times while listing the class members and
778 you've got strings over 4k. Hack around this for now by increasing
779 the page size. A proper solution would abandon this structure scheme
780 certainly for very large strings, and possibly entirely. */
781
782 #ifndef PAGE_SIZE
783 #define PAGE_SIZE (8*1024) /* size of varray pages */
784 #endif
785
786 #define PAGE_USIZE ((unsigned long) PAGE_SIZE)
787
788 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */
789 #define MAX_CLUSTER_PAGES 63
790 #endif
791
792 /* Linked list connecting separate page allocations. */
793 typedef struct vlinks {
794 struct vlinks *prev; /* previous set of pages */
795 struct vlinks *next; /* next set of pages */
796 union page *datum; /* start of page */
797 unsigned long start_index; /* starting index # of page */
798 } vlinks_t;
799
800 /* Virtual array header. */
801 typedef struct varray {
802 vlinks_t *first; /* first page link */
803 vlinks_t *last; /* last page link */
804 unsigned long num_allocated; /* # objects allocated */
805 unsigned short object_size; /* size in bytes of each object */
806 unsigned short objects_per_page; /* # objects that can fit on a page */
807 unsigned short objects_last_page; /* # objects allocated on last page */
808 } varray_t;
809
810 #ifndef MALLOC_CHECK
811 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type))
812 #else
813 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE)
814 #endif
815
816 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \
817 (vlinks_t *)0, /* first */ \
818 (vlinks_t *)0, /* last */ \
819 0, /* num_allocated */ \
820 sizeof (type), /* object_size */ \
821 OBJECTS_PER_PAGE (type), /* objects_per_page */ \
822 OBJECTS_PER_PAGE (type), /* objects_last_page */ \
823 }
824
825 /* Master type for indexes within the symbol table. */
826 typedef unsigned long symint_t;
827
828 /* Linked list support for nested scopes (file, block, structure, etc.). */
829 typedef struct scope {
830 struct scope *prev; /* previous scope level */
831 struct scope *free; /* free list pointer */
832 struct localsym *lsym; /* pointer to local symbol node */
833 st_t type; /* type of the node */
834 } scope_t;
835
836 /* For a local symbol we store a gas symbol as well as the debugging
837 information we generate. The gas symbol will be NULL if this is
838 only a debugging symbol. */
839 typedef struct localsym {
840 const char *name; /* symbol name */
841 symbolS *as_sym; /* symbol as seen by gas */
842 bfd_vma addend; /* addend to as_sym value */
843 struct efdr *file_ptr; /* file pointer */
844 struct ecoff_proc *proc_ptr; /* proc pointer */
845 struct localsym *begin_ptr; /* symbol at start of block */
846 struct ecoff_aux *index_ptr; /* index value to be filled in */
847 struct forward *forward_ref; /* forward references to this symbol */
848 long sym_index; /* final symbol index */
849 EXTR ecoff_sym; /* ECOFF debugging symbol */
850 } localsym_t;
851
852 /* For aux information we keep the type and the data. */
853 typedef struct ecoff_aux {
854 enum aux_type type; /* aux type */
855 AUXU data; /* aux data */
856 } aux_t;
857
858 /* For a procedure we store the gas symbol as well as the PDR
859 debugging information. */
860 typedef struct ecoff_proc {
861 localsym_t *sym; /* associated symbol */
862 PDR pdr; /* ECOFF debugging info */
863 } proc_t;
864
865 /* Number of proc_t structures allocated. */
866 static unsigned long proc_cnt;
867
868 /* Forward reference list for tags referenced, but not yet defined. */
869 typedef struct forward {
870 struct forward *next; /* next forward reference */
871 struct forward *free; /* free list pointer */
872 aux_t *ifd_ptr; /* pointer to store file index */
873 aux_t *index_ptr; /* pointer to store symbol index */
874 } forward_t;
875
876 /* Linked list support for tags. The first tag in the list is always
877 the current tag for that block. */
878 typedef struct tag {
879 struct tag *free; /* free list pointer */
880 struct shash *hash_ptr; /* pointer to the hash table head */
881 struct tag *same_name; /* tag with same name in outer scope */
882 struct tag *same_block; /* next tag defined in the same block. */
883 struct forward *forward_ref; /* list of forward references */
884 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
885 symint_t ifd; /* file # tag defined in */
886 localsym_t *sym; /* file's local symbols */
887 } tag_t;
888
889 /* Head of a block's linked list of tags. */
890 typedef struct thead {
891 struct thead *prev; /* previous block */
892 struct thead *free; /* free list pointer */
893 struct tag *first_tag; /* first tag in block defined */
894 } thead_t;
895
896 /* Union containing pointers to each the small structures which are freed up. */
897 typedef union small_free {
898 scope_t *f_scope; /* scope structure */
899 thead_t *f_thead; /* tag head structure */
900 tag_t *f_tag; /* tag element structure */
901 forward_t *f_forward; /* forward tag reference */
902 } small_free_t;
903
904 /* String hash table entry. */
905
906 typedef struct shash {
907 char *string; /* string we are hashing */
908 symint_t indx; /* index within string table */
909 EXTR *esym_ptr; /* global symbol pointer */
910 localsym_t *sym_ptr; /* local symbol pointer */
911 localsym_t *end_ptr; /* symbol pointer to end block */
912 tag_t *tag_ptr; /* tag pointer */
913 proc_t *proc_ptr; /* procedure descriptor pointer */
914 } shash_t;
915
916 /* Type hash table support. The size of the hash table must fit
917 within a page with the other extended file descriptor information.
918 Because unique types which are hashed are fewer in number than
919 strings, we use a smaller hash value. */
920
921 #define HASHBITS 30
922
923 #ifndef THASH_SIZE
924 #define THASH_SIZE 113
925 #endif
926
927 typedef struct thash {
928 struct thash *next; /* next hash value */
929 AUXU type; /* type we are hashing */
930 symint_t indx; /* index within string table */
931 } thash_t;
932
933 /* Extended file descriptor that contains all of the support necessary
934 to add things to each file separately. */
935 typedef struct efdr {
936 FDR fdr; /* File header to be written out */
937 FDR *orig_fdr; /* original file header */
938 char *name; /* filename */
939 int fake; /* whether this is faked .file */
940 symint_t void_type; /* aux. pointer to 'void' type */
941 symint_t int_type; /* aux. pointer to 'int' type */
942 scope_t *cur_scope; /* current nested scopes */
943 symint_t file_index; /* current file number */
944 int nested_scopes; /* # nested scopes */
945 varray_t strings; /* local strings */
946 varray_t symbols; /* local symbols */
947 varray_t procs; /* procedures */
948 varray_t aux_syms; /* auxiliary symbols */
949 struct efdr *next_file; /* next file descriptor */
950 /* string/type hash tables */
951 struct hash_control *str_hash; /* string hash table */
952 thash_t *thash_head[THASH_SIZE];
953 } efdr_t;
954
955 /* Pre-initialized extended file structure. */
956 static const efdr_t init_file = {
957 { /* FDR structure */
958 0, /* adr: memory address of beginning of file */
959 0, /* rss: file name (of source, if known) */
960 0, /* issBase: file's string space */
961 0, /* cbSs: number of bytes in the ss */
962 0, /* isymBase: beginning of symbols */
963 0, /* csym: count file's of symbols */
964 0, /* ilineBase: file's line symbols */
965 0, /* cline: count of file's line symbols */
966 0, /* ioptBase: file's optimization entries */
967 0, /* copt: count of file's optimization entries */
968 0, /* ipdFirst: start of procedures for this file */
969 0, /* cpd: count of procedures for this file */
970 0, /* iauxBase: file's auxiliary entries */
971 0, /* caux: count of file's auxiliary entries */
972 0, /* rfdBase: index into the file indirect table */
973 0, /* crfd: count file indirect entries */
974 langC, /* lang: language for this file */
975 1, /* fMerge: whether this file can be merged */
976 0, /* fReadin: true if read in (not just created) */
977 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */
978 GLEVEL_2, /* glevel: level this file was compiled with */
979 0, /* reserved: reserved for future use */
980 0, /* cbLineOffset: byte offset from header for this file ln's */
981 0, /* cbLine: size of lines for this file */
982 },
983
984 (FDR *)0, /* orig_fdr: original file header pointer */
985 (char *)0, /* name: pointer to filename */
986 0, /* fake: whether this is a faked .file */
987 0, /* void_type: ptr to aux node for void type */
988 0, /* int_type: ptr to aux node for int type */
989 (scope_t *)0, /* cur_scope: current scope being processed */
990 0, /* file_index: current file # */
991 0, /* nested_scopes: # nested scopes */
992 INIT_VARRAY (char), /* strings: local string varray */
993 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */
994 INIT_VARRAY (proc_t), /* procs: procedure varray */
995 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */
996
997 (struct efdr *)0, /* next_file: next file structure */
998
999 (struct hash_control *)0, /* str_hash: string hash table */
1000 { 0 }, /* thash_head: type hash table */
1001 };
1002
1003 static efdr_t *first_file; /* first file descriptor */
1004 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */
1005
1006 /* Line number information is kept in a list until the assembly is
1007 finished. */
1008 typedef struct lineno_list {
1009 struct lineno_list *next; /* next element in list */
1010 efdr_t *file; /* file this line is in */
1011 proc_t *proc; /* procedure this line is in */
1012 fragS *frag; /* fragment this line number is in */
1013 unsigned long paddr; /* offset within fragment */
1014 long lineno; /* actual line number */
1015 } lineno_list_t;
1016
1017 static lineno_list_t *first_lineno;
1018 static lineno_list_t *last_lineno;
1019 static lineno_list_t **last_lineno_ptr = &first_lineno;
1020
1021 /* Sometimes there will be some .loc statements before a .ent. We
1022 keep them in this list so that we can fill in the procedure pointer
1023 after we see the .ent. */
1024 static lineno_list_t *noproc_lineno;
1025
1026 /* Union of various things that are held in pages. */
1027 typedef union page {
1028 char byte [ PAGE_SIZE ];
1029 unsigned char ubyte [ PAGE_SIZE ];
1030 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ];
1031 FDR ofile [ PAGE_SIZE / sizeof (FDR) ];
1032 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ];
1033 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ];
1034 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ];
1035 DNR dense [ PAGE_SIZE / sizeof (DNR) ];
1036 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ];
1037 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ];
1038 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ];
1039 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ];
1040 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ];
1041 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ];
1042 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ];
1043 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ];
1044 } page_type;
1045
1046 /* Structure holding allocation information for small sized structures. */
1047 typedef struct alloc_info {
1048 char *alloc_name; /* name of this allocation type (must be first) */
1049 page_type *cur_page; /* current page being allocated from */
1050 small_free_t free_list; /* current free list if any */
1051 int unallocated; /* number of elements unallocated on page */
1052 int total_alloc; /* total number of allocations */
1053 int total_free; /* total number of frees */
1054 int total_pages; /* total number of pages allocated */
1055 } alloc_info_t;
1056
1057 /* Type information collected together. */
1058 typedef struct type_info {
1059 bt_t basic_type; /* basic type */
1060 int orig_type; /* original COFF-based type */
1061 int num_tq; /* # type qualifiers */
1062 int num_dims; /* # dimensions */
1063 int num_sizes; /* # sizes */
1064 int extra_sizes; /* # extra sizes not tied with dims */
1065 tag_t * tag_ptr; /* tag pointer */
1066 int bitfield; /* symbol is a bitfield */
1067 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/
1068 symint_t dimensions [N_TQ]; /* dimensions for each array */
1069 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of
1070 struct/union/enum + bitfield size */
1071 } type_info_t;
1072
1073 /* Pre-initialized type_info struct. */
1074 static const type_info_t type_info_init = {
1075 bt_Nil, /* basic type */
1076 T_NULL, /* original COFF-based type */
1077 0, /* # type qualifiers */
1078 0, /* # dimensions */
1079 0, /* # sizes */
1080 0, /* sizes not tied with dims */
1081 NULL, /* ptr to tag */
1082 0, /* bitfield */
1083 { /* type qualifiers */
1084 tq_Nil,
1085 tq_Nil,
1086 tq_Nil,
1087 tq_Nil,
1088 tq_Nil,
1089 tq_Nil,
1090 },
1091 { /* dimensions */
1092 0,
1093 0,
1094 0,
1095 0,
1096 0,
1097 0
1098 },
1099 { /* sizes */
1100 0,
1101 0,
1102 0,
1103 0,
1104 0,
1105 0,
1106 0,
1107 0,
1108 },
1109 };
1110
1111 /* Global hash table for the tags table and global table for file
1112 descriptors. */
1113
1114 static varray_t file_desc = INIT_VARRAY (efdr_t);
1115
1116 static struct hash_control *tag_hash;
1117
1118 /* Static types for int and void. Also, remember the last function's
1119 type (which is set up when we encounter the declaration for the
1120 function, and used when the end block for the function is emitted. */
1121
1122 static type_info_t int_type_info;
1123 static type_info_t void_type_info;
1124 static type_info_t last_func_type_info;
1125 static symbolS *last_func_sym_value;
1126
1127 /* Convert COFF basic type to ECOFF basic type. The T_NULL type
1128 really should use bt_Void, but this causes the current ecoff GDB to
1129 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS
1130 2.0) doesn't understand it, even though the compiler generates it.
1131 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler
1132 suite, but for now go with what works.
1133
1134 It would make sense for the .type and .scl directives to use the
1135 ECOFF numbers directly, rather than using the COFF numbers and
1136 mapping them. Unfortunately, this is historically what mips-tfile
1137 expects, and changing gcc now would be a considerable pain (the
1138 native compiler generates debugging information internally, rather
1139 than via the assembler, so it will never use .type or .scl). */
1140
1141 static const bt_t map_coff_types[] = {
1142 bt_Nil, /* T_NULL */
1143 bt_Nil, /* T_ARG */
1144 bt_Char, /* T_CHAR */
1145 bt_Short, /* T_SHORT */
1146 bt_Int, /* T_INT */
1147 bt_Long, /* T_LONG */
1148 bt_Float, /* T_FLOAT */
1149 bt_Double, /* T_DOUBLE */
1150 bt_Struct, /* T_STRUCT */
1151 bt_Union, /* T_UNION */
1152 bt_Enum, /* T_ENUM */
1153 bt_Enum, /* T_MOE */
1154 bt_UChar, /* T_UCHAR */
1155 bt_UShort, /* T_USHORT */
1156 bt_UInt, /* T_UINT */
1157 bt_ULong /* T_ULONG */
1158 };
1159
1160 /* Convert COFF storage class to ECOFF storage class. */
1161 static const sc_t map_coff_storage[] = {
1162 sc_Nil, /* 0: C_NULL */
1163 sc_Abs, /* 1: C_AUTO auto var */
1164 sc_Undefined, /* 2: C_EXT external */
1165 sc_Data, /* 3: C_STAT static */
1166 sc_Register, /* 4: C_REG register */
1167 sc_Undefined, /* 5: C_EXTDEF ??? */
1168 sc_Text, /* 6: C_LABEL label */
1169 sc_Text, /* 7: C_ULABEL user label */
1170 sc_Info, /* 8: C_MOS member of struct */
1171 sc_Abs, /* 9: C_ARG argument */
1172 sc_Info, /* 10: C_STRTAG struct tag */
1173 sc_Info, /* 11: C_MOU member of union */
1174 sc_Info, /* 12: C_UNTAG union tag */
1175 sc_Info, /* 13: C_TPDEF typedef */
1176 sc_Data, /* 14: C_USTATIC ??? */
1177 sc_Info, /* 15: C_ENTAG enum tag */
1178 sc_Info, /* 16: C_MOE member of enum */
1179 sc_Register, /* 17: C_REGPARM register parameter */
1180 sc_Bits, /* 18; C_FIELD bitfield */
1181 sc_Nil, /* 19 */
1182 sc_Nil, /* 20 */
1183 sc_Nil, /* 21 */
1184 sc_Nil, /* 22 */
1185 sc_Nil, /* 23 */
1186 sc_Nil, /* 24 */
1187 sc_Nil, /* 25 */
1188 sc_Nil, /* 26 */
1189 sc_Nil, /* 27 */
1190 sc_Nil, /* 28 */
1191 sc_Nil, /* 29 */
1192 sc_Nil, /* 30 */
1193 sc_Nil, /* 31 */
1194 sc_Nil, /* 32 */
1195 sc_Nil, /* 33 */
1196 sc_Nil, /* 34 */
1197 sc_Nil, /* 35 */
1198 sc_Nil, /* 36 */
1199 sc_Nil, /* 37 */
1200 sc_Nil, /* 38 */
1201 sc_Nil, /* 39 */
1202 sc_Nil, /* 40 */
1203 sc_Nil, /* 41 */
1204 sc_Nil, /* 42 */
1205 sc_Nil, /* 43 */
1206 sc_Nil, /* 44 */
1207 sc_Nil, /* 45 */
1208 sc_Nil, /* 46 */
1209 sc_Nil, /* 47 */
1210 sc_Nil, /* 48 */
1211 sc_Nil, /* 49 */
1212 sc_Nil, /* 50 */
1213 sc_Nil, /* 51 */
1214 sc_Nil, /* 52 */
1215 sc_Nil, /* 53 */
1216 sc_Nil, /* 54 */
1217 sc_Nil, /* 55 */
1218 sc_Nil, /* 56 */
1219 sc_Nil, /* 57 */
1220 sc_Nil, /* 58 */
1221 sc_Nil, /* 59 */
1222 sc_Nil, /* 60 */
1223 sc_Nil, /* 61 */
1224 sc_Nil, /* 62 */
1225 sc_Nil, /* 63 */
1226 sc_Nil, /* 64 */
1227 sc_Nil, /* 65 */
1228 sc_Nil, /* 66 */
1229 sc_Nil, /* 67 */
1230 sc_Nil, /* 68 */
1231 sc_Nil, /* 69 */
1232 sc_Nil, /* 70 */
1233 sc_Nil, /* 71 */
1234 sc_Nil, /* 72 */
1235 sc_Nil, /* 73 */
1236 sc_Nil, /* 74 */
1237 sc_Nil, /* 75 */
1238 sc_Nil, /* 76 */
1239 sc_Nil, /* 77 */
1240 sc_Nil, /* 78 */
1241 sc_Nil, /* 79 */
1242 sc_Nil, /* 80 */
1243 sc_Nil, /* 81 */
1244 sc_Nil, /* 82 */
1245 sc_Nil, /* 83 */
1246 sc_Nil, /* 84 */
1247 sc_Nil, /* 85 */
1248 sc_Nil, /* 86 */
1249 sc_Nil, /* 87 */
1250 sc_Nil, /* 88 */
1251 sc_Nil, /* 89 */
1252 sc_Nil, /* 90 */
1253 sc_Nil, /* 91 */
1254 sc_Nil, /* 92 */
1255 sc_Nil, /* 93 */
1256 sc_Nil, /* 94 */
1257 sc_Nil, /* 95 */
1258 sc_Nil, /* 96 */
1259 sc_Nil, /* 97 */
1260 sc_Nil, /* 98 */
1261 sc_Nil, /* 99 */
1262 sc_Text, /* 100: C_BLOCK block start/end */
1263 sc_Text, /* 101: C_FCN function start/end */
1264 sc_Info, /* 102: C_EOS end of struct/union/enum */
1265 sc_Nil, /* 103: C_FILE file start */
1266 sc_Nil, /* 104: C_LINE line number */
1267 sc_Nil, /* 105: C_ALIAS combined type info */
1268 sc_Nil, /* 106: C_HIDDEN ??? */
1269 };
1270
1271 /* Convert COFF storage class to ECOFF symbol type. */
1272 static const st_t map_coff_sym_type[] = {
1273 st_Nil, /* 0: C_NULL */
1274 st_Local, /* 1: C_AUTO auto var */
1275 st_Global, /* 2: C_EXT external */
1276 st_Static, /* 3: C_STAT static */
1277 st_Local, /* 4: C_REG register */
1278 st_Global, /* 5: C_EXTDEF ??? */
1279 st_Label, /* 6: C_LABEL label */
1280 st_Label, /* 7: C_ULABEL user label */
1281 st_Member, /* 8: C_MOS member of struct */
1282 st_Param, /* 9: C_ARG argument */
1283 st_Block, /* 10: C_STRTAG struct tag */
1284 st_Member, /* 11: C_MOU member of union */
1285 st_Block, /* 12: C_UNTAG union tag */
1286 st_Typedef, /* 13: C_TPDEF typedef */
1287 st_Static, /* 14: C_USTATIC ??? */
1288 st_Block, /* 15: C_ENTAG enum tag */
1289 st_Member, /* 16: C_MOE member of enum */
1290 st_Param, /* 17: C_REGPARM register parameter */
1291 st_Member, /* 18; C_FIELD bitfield */
1292 st_Nil, /* 19 */
1293 st_Nil, /* 20 */
1294 st_Nil, /* 21 */
1295 st_Nil, /* 22 */
1296 st_Nil, /* 23 */
1297 st_Nil, /* 24 */
1298 st_Nil, /* 25 */
1299 st_Nil, /* 26 */
1300 st_Nil, /* 27 */
1301 st_Nil, /* 28 */
1302 st_Nil, /* 29 */
1303 st_Nil, /* 30 */
1304 st_Nil, /* 31 */
1305 st_Nil, /* 32 */
1306 st_Nil, /* 33 */
1307 st_Nil, /* 34 */
1308 st_Nil, /* 35 */
1309 st_Nil, /* 36 */
1310 st_Nil, /* 37 */
1311 st_Nil, /* 38 */
1312 st_Nil, /* 39 */
1313 st_Nil, /* 40 */
1314 st_Nil, /* 41 */
1315 st_Nil, /* 42 */
1316 st_Nil, /* 43 */
1317 st_Nil, /* 44 */
1318 st_Nil, /* 45 */
1319 st_Nil, /* 46 */
1320 st_Nil, /* 47 */
1321 st_Nil, /* 48 */
1322 st_Nil, /* 49 */
1323 st_Nil, /* 50 */
1324 st_Nil, /* 51 */
1325 st_Nil, /* 52 */
1326 st_Nil, /* 53 */
1327 st_Nil, /* 54 */
1328 st_Nil, /* 55 */
1329 st_Nil, /* 56 */
1330 st_Nil, /* 57 */
1331 st_Nil, /* 58 */
1332 st_Nil, /* 59 */
1333 st_Nil, /* 60 */
1334 st_Nil, /* 61 */
1335 st_Nil, /* 62 */
1336 st_Nil, /* 63 */
1337 st_Nil, /* 64 */
1338 st_Nil, /* 65 */
1339 st_Nil, /* 66 */
1340 st_Nil, /* 67 */
1341 st_Nil, /* 68 */
1342 st_Nil, /* 69 */
1343 st_Nil, /* 70 */
1344 st_Nil, /* 71 */
1345 st_Nil, /* 72 */
1346 st_Nil, /* 73 */
1347 st_Nil, /* 74 */
1348 st_Nil, /* 75 */
1349 st_Nil, /* 76 */
1350 st_Nil, /* 77 */
1351 st_Nil, /* 78 */
1352 st_Nil, /* 79 */
1353 st_Nil, /* 80 */
1354 st_Nil, /* 81 */
1355 st_Nil, /* 82 */
1356 st_Nil, /* 83 */
1357 st_Nil, /* 84 */
1358 st_Nil, /* 85 */
1359 st_Nil, /* 86 */
1360 st_Nil, /* 87 */
1361 st_Nil, /* 88 */
1362 st_Nil, /* 89 */
1363 st_Nil, /* 90 */
1364 st_Nil, /* 91 */
1365 st_Nil, /* 92 */
1366 st_Nil, /* 93 */
1367 st_Nil, /* 94 */
1368 st_Nil, /* 95 */
1369 st_Nil, /* 96 */
1370 st_Nil, /* 97 */
1371 st_Nil, /* 98 */
1372 st_Nil, /* 99 */
1373 st_Block, /* 100: C_BLOCK block start/end */
1374 st_Proc, /* 101: C_FCN function start/end */
1375 st_End, /* 102: C_EOS end of struct/union/enum */
1376 st_File, /* 103: C_FILE file start */
1377 st_Nil, /* 104: C_LINE line number */
1378 st_Nil, /* 105: C_ALIAS combined type info */
1379 st_Nil, /* 106: C_HIDDEN ??? */
1380 };
1381
1382 /* Keep track of different sized allocation requests. */
1383 static alloc_info_t alloc_counts[(int) alloc_type_last];
1384 \f
1385 /* Record whether we have seen any debugging information. */
1386 int ecoff_debugging_seen = 0;
1387
1388 /* Various statics. */
1389 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */
1390 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */
1391 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */
1392 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */
1393 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */
1394 #ifdef ECOFF_DEBUG
1395 static int debug = 0; /* trace functions */
1396 #endif
1397 static int stabs_seen = 0; /* != 0 if stabs have been seen */
1398
1399 static int current_file_idx;
1400 static const char *current_stabs_filename;
1401
1402 /* Pseudo symbol to use when putting stabs into the symbol table. */
1403 #ifndef STABS_SYMBOL
1404 #define STABS_SYMBOL "@stabs"
1405 #endif
1406
1407 static char stabs_symbol[] = STABS_SYMBOL;
1408 \f
1409 /* Prototypes for functions defined in this file. */
1410
1411 static void add_varray_page (varray_t *vp);
1412 static symint_t add_string (varray_t *vp,
1413 struct hash_control *hash_tbl,
1414 const char *str,
1415 shash_t **ret_hash);
1416 static localsym_t *add_ecoff_symbol (const char *str, st_t type,
1417 sc_t storage, symbolS *sym,
1418 bfd_vma addend, symint_t value,
1419 symint_t indx);
1420 static symint_t add_aux_sym_symint (symint_t aux_word);
1421 static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index);
1422 static symint_t add_aux_sym_tir (type_info_t *t,
1423 hash_state_t state,
1424 thash_t **hash_tbl);
1425 static tag_t *get_tag (const char *tag, localsym_t *sym, bt_t basic_type);
1426 static void add_unknown_tag (tag_t *ptag);
1427 static void add_procedure (char *func);
1428 static void add_file (const char *file_name, int indx, int fake);
1429 #ifdef ECOFF_DEBUG
1430 static char *sc_to_string (sc_t storage_class);
1431 static char *st_to_string (st_t symbol_type);
1432 #endif
1433 static void mark_stabs (int);
1434 static char *ecoff_add_bytes (char **buf, char **bufend,
1435 char *bufptr, unsigned long need);
1436 static unsigned long ecoff_padding_adjust
1437 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1438 unsigned long offset, char **bufptrptr);
1439 static unsigned long ecoff_build_lineno
1440 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1441 unsigned long offset, long *linecntptr);
1442 static unsigned long ecoff_build_symbols
1443 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1444 unsigned long offset);
1445 static unsigned long ecoff_build_procs
1446 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1447 unsigned long offset);
1448 static unsigned long ecoff_build_aux
1449 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1450 unsigned long offset);
1451 static unsigned long ecoff_build_strings (char **buf, char **bufend,
1452 unsigned long offset,
1453 varray_t *vp);
1454 static unsigned long ecoff_build_ss
1455 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1456 unsigned long offset);
1457 static unsigned long ecoff_build_fdr
1458 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1459 unsigned long offset);
1460 static void ecoff_setup_ext (void);
1461 static page_type *allocate_cluster (unsigned long npages);
1462 static page_type *allocate_page (void);
1463 static scope_t *allocate_scope (void);
1464 static void free_scope (scope_t *ptr);
1465 static vlinks_t *allocate_vlinks (void);
1466 static shash_t *allocate_shash (void);
1467 static thash_t *allocate_thash (void);
1468 static tag_t *allocate_tag (void);
1469 static void free_tag (tag_t *ptr);
1470 static forward_t *allocate_forward (void);
1471 static thead_t *allocate_thead (void);
1472 static void free_thead (thead_t *ptr);
1473 static lineno_list_t *allocate_lineno_list (void);
1474 \f
1475 /* This function should be called when the assembler starts up. */
1476
1477 void
1478 ecoff_read_begin_hook (void)
1479 {
1480 tag_hash = hash_new ();
1481 top_tag_head = allocate_thead ();
1482 top_tag_head->first_tag = (tag_t *) NULL;
1483 top_tag_head->free = (thead_t *) NULL;
1484 top_tag_head->prev = cur_tag_head;
1485 cur_tag_head = top_tag_head;
1486 }
1487
1488 /* This function should be called when a symbol is created. */
1489
1490 void
1491 ecoff_symbol_new_hook (symbolS *symbolP)
1492 {
1493 OBJ_SYMFIELD_TYPE *obj;
1494
1495 /* Make sure that we have a file pointer, but only if we have seen a
1496 file. If we haven't seen a file, then this is a probably special
1497 symbol created by md_begin which may required special handling at
1498 some point. Creating a dummy file with a dummy name is certainly
1499 wrong. */
1500 if (cur_file_ptr == (efdr_t *) NULL
1501 && seen_at_least_1_file ())
1502 add_file ((const char *) NULL, 0, 1);
1503 obj = symbol_get_obj (symbolP);
1504 obj->ecoff_file = cur_file_ptr;
1505 obj->ecoff_symbol = NULL;
1506 obj->ecoff_extern_size = 0;
1507 }
1508 \f
1509 /* Add a page to a varray object. */
1510
1511 static void
1512 add_varray_page (varray_t *vp /* varray to add page to */)
1513 {
1514 vlinks_t *new_links = allocate_vlinks ();
1515
1516 #ifdef MALLOC_CHECK
1517 if (vp->object_size > 1)
1518 new_links->datum = (page_type *) xcalloc (1, vp->object_size);
1519 else
1520 #endif
1521 new_links->datum = allocate_page ();
1522
1523 alloc_counts[(int) alloc_type_varray].total_alloc++;
1524 alloc_counts[(int) alloc_type_varray].total_pages++;
1525
1526 new_links->start_index = vp->num_allocated;
1527 vp->objects_last_page = 0;
1528
1529 if (vp->first == (vlinks_t *) NULL) /* first allocation? */
1530 vp->first = vp->last = new_links;
1531 else
1532 { /* 2nd or greater allocation */
1533 new_links->prev = vp->last;
1534 vp->last->next = new_links;
1535 vp->last = new_links;
1536 }
1537 }
1538 \f
1539 /* Add a string (and null pad) to one of the string tables. */
1540
1541 static symint_t
1542 add_string (varray_t *vp, /* string obstack */
1543 struct hash_control *hash_tbl, /* ptr to hash table */
1544 const char *str, /* string */
1545 shash_t **ret_hash /* return hash pointer */)
1546 {
1547 register unsigned long len = strlen (str);
1548 register shash_t *hash_ptr;
1549
1550 if (len >= PAGE_USIZE)
1551 as_fatal (_("string too big (%lu bytes)"), len);
1552
1553 hash_ptr = (shash_t *) hash_find (hash_tbl, str);
1554 if (hash_ptr == (shash_t *) NULL)
1555 {
1556 register const char *err;
1557
1558 if (vp->objects_last_page + len >= PAGE_USIZE)
1559 {
1560 vp->num_allocated =
1561 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE;
1562 add_varray_page (vp);
1563 }
1564
1565 hash_ptr = allocate_shash ();
1566 hash_ptr->indx = vp->num_allocated;
1567
1568 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page];
1569
1570 vp->objects_last_page += len + 1;
1571 vp->num_allocated += len + 1;
1572
1573 strcpy (hash_ptr->string, str);
1574
1575 err = hash_insert (hash_tbl, str, (char *) hash_ptr);
1576 if (err)
1577 as_fatal (_("inserting \"%s\" into string hash table: %s"),
1578 str, err);
1579 }
1580
1581 if (ret_hash != (shash_t **) NULL)
1582 *ret_hash = hash_ptr;
1583
1584 return hash_ptr->indx;
1585 }
1586 \f
1587 /* Add debugging information for a symbol. */
1588
1589 static localsym_t *
1590 add_ecoff_symbol (const char *str, /* symbol name */
1591 st_t type, /* symbol type */
1592 sc_t storage, /* storage class */
1593 symbolS *sym_value, /* associated symbol. */
1594 bfd_vma addend, /* addend to sym_value. */
1595 symint_t value, /* value of symbol */
1596 symint_t indx /* index to local/aux. syms */)
1597 {
1598 localsym_t *psym;
1599 register scope_t *pscope;
1600 register thead_t *ptag_head;
1601 register tag_t *ptag;
1602 register tag_t *ptag_next;
1603 register varray_t *vp;
1604 register int scope_delta = 0;
1605 shash_t *hash_ptr = (shash_t *) NULL;
1606
1607 if (cur_file_ptr == (efdr_t *) NULL)
1608 as_fatal (_("no current file pointer"));
1609
1610 vp = &cur_file_ptr->symbols;
1611
1612 if (vp->objects_last_page == vp->objects_per_page)
1613 add_varray_page (vp);
1614
1615 psym = &vp->last->datum->sym[vp->objects_last_page++];
1616
1617 if (str == (const char *) NULL && sym_value != (symbolS *) NULL)
1618 psym->name = S_GET_NAME (sym_value);
1619 else
1620 psym->name = str;
1621 psym->as_sym = sym_value;
1622 if (sym_value != (symbolS *) NULL)
1623 symbol_get_obj (sym_value)->ecoff_symbol = psym;
1624 psym->addend = addend;
1625 psym->file_ptr = cur_file_ptr;
1626 psym->proc_ptr = cur_proc_ptr;
1627 psym->begin_ptr = (localsym_t *) NULL;
1628 psym->index_ptr = (aux_t *) NULL;
1629 psym->forward_ref = (forward_t *) NULL;
1630 psym->sym_index = -1;
1631 memset (&psym->ecoff_sym, 0, sizeof (EXTR));
1632 psym->ecoff_sym.asym.value = value;
1633 psym->ecoff_sym.asym.st = (unsigned) type;
1634 psym->ecoff_sym.asym.sc = (unsigned) storage;
1635 psym->ecoff_sym.asym.index = indx;
1636
1637 /* If there is an associated symbol, we wait until the end of the
1638 assembly before deciding where to put the name (it may be just an
1639 external symbol). Otherwise, this is just a debugging symbol and
1640 the name should go with the current file. */
1641 if (sym_value == (symbolS *) NULL)
1642 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL)
1643 ? 0
1644 : add_string (&cur_file_ptr->strings,
1645 cur_file_ptr->str_hash,
1646 str,
1647 &hash_ptr));
1648
1649 ++vp->num_allocated;
1650
1651 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym))
1652 return psym;
1653
1654 /* Save the symbol within the hash table if this is a static
1655 item, and it has a name. */
1656 if (hash_ptr != (shash_t *) NULL
1657 && (type == st_Global || type == st_Static || type == st_Label
1658 || type == st_Proc || type == st_StaticProc))
1659 hash_ptr->sym_ptr = psym;
1660
1661 /* push or pop a scope if appropriate. */
1662 switch (type)
1663 {
1664 default:
1665 break;
1666
1667 case st_File: /* beginning of file */
1668 case st_Proc: /* procedure */
1669 case st_StaticProc: /* static procedure */
1670 case st_Block: /* begin scope */
1671 pscope = allocate_scope ();
1672 pscope->prev = cur_file_ptr->cur_scope;
1673 pscope->lsym = psym;
1674 pscope->type = type;
1675 cur_file_ptr->cur_scope = pscope;
1676
1677 if (type != st_File)
1678 scope_delta = 1;
1679
1680 /* For every block type except file, struct, union, or
1681 enumeration blocks, push a level on the tag stack. We omit
1682 file types, so that tags can span file boundaries. */
1683 if (type != st_File && storage != sc_Info)
1684 {
1685 ptag_head = allocate_thead ();
1686 ptag_head->first_tag = 0;
1687 ptag_head->prev = cur_tag_head;
1688 cur_tag_head = ptag_head;
1689 }
1690 break;
1691
1692 case st_End:
1693 pscope = cur_file_ptr->cur_scope;
1694 if (pscope == (scope_t *) NULL)
1695 as_fatal (_("too many st_End's"));
1696 else
1697 {
1698 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st;
1699
1700 psym->begin_ptr = pscope->lsym;
1701
1702 if (begin_type != st_File)
1703 scope_delta = -1;
1704
1705 /* Except for file, structure, union, or enumeration end
1706 blocks remove all tags created within this scope. */
1707 if (begin_type != st_File && storage != sc_Info)
1708 {
1709 ptag_head = cur_tag_head;
1710 cur_tag_head = ptag_head->prev;
1711
1712 for (ptag = ptag_head->first_tag;
1713 ptag != (tag_t *) NULL;
1714 ptag = ptag_next)
1715 {
1716 if (ptag->forward_ref != (forward_t *) NULL)
1717 add_unknown_tag (ptag);
1718
1719 ptag_next = ptag->same_block;
1720 ptag->hash_ptr->tag_ptr = ptag->same_name;
1721 free_tag (ptag);
1722 }
1723
1724 free_thead (ptag_head);
1725 }
1726
1727 cur_file_ptr->cur_scope = pscope->prev;
1728
1729 /* block begin gets next sym #. This is set when we know
1730 the symbol index value. */
1731
1732 /* Functions push two or more aux words as follows:
1733 1st word: index+1 of the end symbol (filled in later).
1734 2nd word: type of the function (plus any aux words needed).
1735 Also, tie the external pointer back to the function begin symbol. */
1736 if (begin_type != st_File && begin_type != st_Block)
1737 {
1738 symint_t ty;
1739 varray_t *svp = &cur_file_ptr->aux_syms;
1740
1741 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0);
1742 pscope->lsym->index_ptr =
1743 &svp->last->datum->aux[svp->objects_last_page - 1];
1744 ty = add_aux_sym_tir (&last_func_type_info,
1745 hash_no,
1746 &cur_file_ptr->thash_head[0]);
1747
1748 /* This seems to be unnecessary. I'm not even sure what it is
1749 * intended to do. It's from mips-tfile.
1750 * if (last_func_sym_value != (symbolS *) NULL)
1751 * {
1752 * last_func_sym_value->ifd = cur_file_ptr->file_index;
1753 * last_func_sym_value->index = ty;
1754 * }
1755 */
1756 }
1757
1758 free_scope (pscope);
1759 }
1760 }
1761
1762 cur_file_ptr->nested_scopes += scope_delta;
1763
1764 #ifdef ECOFF_DEBUG
1765 if (debug && type != st_File
1766 && (debug > 2 || type == st_Block || type == st_End
1767 || type == st_Proc || type == st_StaticProc))
1768 {
1769 char *sc_str = sc_to_string (storage);
1770 char *st_str = st_to_string (type);
1771 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0);
1772
1773 fprintf (stderr,
1774 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s",
1775 value, depth, sc_str);
1776
1777 if (str_start && str_end_p1 - str_start > 0)
1778 fprintf (stderr, " st= %-11s name= %.*s\n",
1779 st_str, str_end_p1 - str_start, str_start);
1780 else
1781 {
1782 unsigned long len = strlen (st_str);
1783 fprintf (stderr, " st= %.*s\n", len - 1, st_str);
1784 }
1785 }
1786 #endif
1787
1788 return psym;
1789 }
1790 \f
1791 /* Add an auxiliary symbol (passing a symint). This is actually used
1792 for integral aux types, not just symints. */
1793
1794 static symint_t
1795 add_aux_sym_symint (symint_t aux_word /* auxiliary information word */)
1796 {
1797 register varray_t *vp;
1798 register aux_t *aux_ptr;
1799
1800 if (cur_file_ptr == (efdr_t *) NULL)
1801 as_fatal (_("no current file pointer"));
1802
1803 vp = &cur_file_ptr->aux_syms;
1804
1805 if (vp->objects_last_page == vp->objects_per_page)
1806 add_varray_page (vp);
1807
1808 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1809 aux_ptr->type = aux_isym;
1810 aux_ptr->data.isym = aux_word;
1811
1812 return vp->num_allocated++;
1813 }
1814
1815 /* Add an auxiliary symbol (passing a file/symbol index combo). */
1816
1817 static symint_t
1818 add_aux_sym_rndx (int file_index, symint_t sym_index)
1819 {
1820 register varray_t *vp;
1821 register aux_t *aux_ptr;
1822
1823 if (cur_file_ptr == (efdr_t *) NULL)
1824 as_fatal (_("no current file pointer"));
1825
1826 vp = &cur_file_ptr->aux_syms;
1827
1828 if (vp->objects_last_page == vp->objects_per_page)
1829 add_varray_page (vp);
1830
1831 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1832 aux_ptr->type = aux_rndx;
1833 aux_ptr->data.rndx.rfd = file_index;
1834 aux_ptr->data.rndx.index = sym_index;
1835
1836 return vp->num_allocated++;
1837 }
1838 \f
1839 /* Add an auxiliary symbol (passing the basic type and possibly
1840 type qualifiers). */
1841
1842 static symint_t
1843 add_aux_sym_tir (type_info_t *t, /* current type information */
1844 hash_state_t state, /* whether to hash type or not */
1845 thash_t **hash_tbl /* pointer to hash table to use */)
1846 {
1847 register varray_t *vp;
1848 register aux_t *aux_ptr;
1849 static AUXU init_aux;
1850 symint_t ret;
1851 int i;
1852 AUXU aux;
1853
1854 if (cur_file_ptr == (efdr_t *) NULL)
1855 as_fatal (_("no current file pointer"));
1856
1857 vp = &cur_file_ptr->aux_syms;
1858
1859 aux = init_aux;
1860 aux.ti.bt = (int) t->basic_type;
1861 aux.ti.continued = 0;
1862 aux.ti.fBitfield = t->bitfield;
1863
1864 aux.ti.tq0 = (int) t->type_qualifiers[0];
1865 aux.ti.tq1 = (int) t->type_qualifiers[1];
1866 aux.ti.tq2 = (int) t->type_qualifiers[2];
1867 aux.ti.tq3 = (int) t->type_qualifiers[3];
1868 aux.ti.tq4 = (int) t->type_qualifiers[4];
1869 aux.ti.tq5 = (int) t->type_qualifiers[5];
1870
1871 /* For anything that adds additional information, we must not hash,
1872 so check here, and reset our state. */
1873
1874 if (state != hash_no
1875 && (t->type_qualifiers[0] == tq_Array
1876 || t->type_qualifiers[1] == tq_Array
1877 || t->type_qualifiers[2] == tq_Array
1878 || t->type_qualifiers[3] == tq_Array
1879 || t->type_qualifiers[4] == tq_Array
1880 || t->type_qualifiers[5] == tq_Array
1881 || t->basic_type == bt_Struct
1882 || t->basic_type == bt_Union
1883 || t->basic_type == bt_Enum
1884 || t->bitfield
1885 || t->num_dims > 0))
1886 state = hash_no;
1887
1888 /* See if we can hash this type, and save some space, but some types
1889 can't be hashed (because they contain arrays or continuations),
1890 and others can be put into the hash list, but cannot use existing
1891 types because other aux entries precede this one. */
1892
1893 if (state != hash_no)
1894 {
1895 register thash_t *hash_ptr;
1896 register symint_t hi;
1897
1898 hi = aux.isym & ((1 << HASHBITS) - 1);
1899 hi %= THASH_SIZE;
1900
1901 for (hash_ptr = hash_tbl[hi];
1902 hash_ptr != (thash_t *)0;
1903 hash_ptr = hash_ptr->next)
1904 {
1905 if (aux.isym == hash_ptr->type.isym)
1906 break;
1907 }
1908
1909 if (hash_ptr != (thash_t *) NULL && state == hash_yes)
1910 return hash_ptr->indx;
1911
1912 if (hash_ptr == (thash_t *) NULL)
1913 {
1914 hash_ptr = allocate_thash ();
1915 hash_ptr->next = hash_tbl[hi];
1916 hash_ptr->type = aux;
1917 hash_ptr->indx = vp->num_allocated;
1918 hash_tbl[hi] = hash_ptr;
1919 }
1920 }
1921
1922 /* Everything is set up, add the aux symbol. */
1923 if (vp->objects_last_page == vp->objects_per_page)
1924 add_varray_page (vp);
1925
1926 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1927 aux_ptr->type = aux_tir;
1928 aux_ptr->data = aux;
1929
1930 ret = vp->num_allocated++;
1931
1932 /* Add bitfield length if it exists.
1933
1934 NOTE: Mips documentation claims bitfield goes at the end of the
1935 AUX record, but the DECstation compiler emits it here.
1936 (This would only make a difference for enum bitfields.)
1937
1938 Also note: We use the last size given since gcc may emit 2
1939 for an enum bitfield. */
1940
1941 if (t->bitfield)
1942 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]);
1943
1944 /* Add tag information if needed. Structure, union, and enum
1945 references add 2 aux symbols: a [file index, symbol index]
1946 pointer to the structure type, and the current file index. */
1947
1948 if (t->basic_type == bt_Struct
1949 || t->basic_type == bt_Union
1950 || t->basic_type == bt_Enum)
1951 {
1952 register symint_t file_index = t->tag_ptr->ifd;
1953 register localsym_t *sym = t->tag_ptr->sym;
1954 register forward_t *forward_ref = allocate_forward ();
1955
1956 if (sym != (localsym_t *) NULL)
1957 {
1958 forward_ref->next = sym->forward_ref;
1959 sym->forward_ref = forward_ref;
1960 }
1961 else
1962 {
1963 forward_ref->next = t->tag_ptr->forward_ref;
1964 t->tag_ptr->forward_ref = forward_ref;
1965 }
1966
1967 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil);
1968 forward_ref->index_ptr
1969 = &vp->last->datum->aux[vp->objects_last_page - 1];
1970
1971 (void) add_aux_sym_symint (file_index);
1972 forward_ref->ifd_ptr
1973 = &vp->last->datum->aux[vp->objects_last_page - 1];
1974 }
1975
1976 /* Add information about array bounds if they exist. */
1977 for (i = 0; i < t->num_dims; i++)
1978 {
1979 (void) add_aux_sym_rndx (ST_RFDESCAPE,
1980 cur_file_ptr->int_type);
1981
1982 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/
1983 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */
1984 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/
1985 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */
1986 ? 0
1987 : (t->sizes[i] * 8) / t->dimensions[i]);
1988 };
1989
1990 /* NOTE: Mips documentation claims that the bitfield width goes here.
1991 But it needs to be emitted earlier. */
1992
1993 return ret;
1994 }
1995 \f
1996 /* Add a tag to the tag table (unless it already exists). */
1997
1998 static tag_t *
1999 get_tag (const char *tag, /* tag name */
2000 localsym_t *sym, /* tag start block */
2001 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */)
2002 {
2003 shash_t *hash_ptr;
2004 const char *err;
2005 tag_t *tag_ptr;
2006
2007 if (cur_file_ptr == (efdr_t *) NULL)
2008 as_fatal (_("no current file pointer"));
2009
2010 hash_ptr = (shash_t *) hash_find (tag_hash, tag);
2011
2012 if (hash_ptr != (shash_t *) NULL
2013 && hash_ptr->tag_ptr != (tag_t *) NULL)
2014 {
2015 tag_ptr = hash_ptr->tag_ptr;
2016 if (sym != (localsym_t *) NULL)
2017 {
2018 tag_ptr->basic_type = basic_type;
2019 tag_ptr->ifd = cur_file_ptr->file_index;
2020 tag_ptr->sym = sym;
2021 }
2022 return tag_ptr;
2023 }
2024
2025 if (hash_ptr == (shash_t *) NULL)
2026 {
2027 char *perm;
2028
2029 perm = xstrdup (tag);
2030 hash_ptr = allocate_shash ();
2031 err = hash_insert (tag_hash, perm, (char *) hash_ptr);
2032 if (err)
2033 as_fatal (_("inserting \"%s\" into tag hash table: %s"),
2034 tag, err);
2035 hash_ptr->string = perm;
2036 }
2037
2038 tag_ptr = allocate_tag ();
2039 tag_ptr->forward_ref = (forward_t *) NULL;
2040 tag_ptr->hash_ptr = hash_ptr;
2041 tag_ptr->same_name = hash_ptr->tag_ptr;
2042 tag_ptr->basic_type = basic_type;
2043 tag_ptr->sym = sym;
2044 tag_ptr->ifd = ((sym == (localsym_t *) NULL)
2045 ? (symint_t) -1
2046 : cur_file_ptr->file_index);
2047 tag_ptr->same_block = cur_tag_head->first_tag;
2048
2049 cur_tag_head->first_tag = tag_ptr;
2050 hash_ptr->tag_ptr = tag_ptr;
2051
2052 return tag_ptr;
2053 }
2054 \f
2055 /* Add an unknown {struct, union, enum} tag. */
2056
2057 static void
2058 add_unknown_tag (tag_t *ptag /* pointer to tag information */)
2059 {
2060 shash_t *hash_ptr = ptag->hash_ptr;
2061 char *name = hash_ptr->string;
2062 localsym_t *sym;
2063 forward_t **pf;
2064
2065 #ifdef ECOFF_DEBUG
2066 if (debug > 1)
2067 {
2068 char *agg_type = "{unknown aggregate type}";
2069 switch (ptag->basic_type)
2070 {
2071 case bt_Struct: agg_type = "struct"; break;
2072 case bt_Union: agg_type = "union"; break;
2073 case bt_Enum: agg_type = "enum"; break;
2074 default: break;
2075 }
2076
2077 fprintf (stderr, "unknown %s %.*s found\n", agg_type,
2078 hash_ptr->len, name_start);
2079 }
2080 #endif
2081
2082 sym = add_ecoff_symbol (name,
2083 st_Block,
2084 sc_Info,
2085 (symbolS *) NULL,
2086 (bfd_vma) 0,
2087 (symint_t) 0,
2088 (symint_t) 0);
2089
2090 (void) add_ecoff_symbol (name,
2091 st_End,
2092 sc_Info,
2093 (symbolS *) NULL,
2094 (bfd_vma) 0,
2095 (symint_t) 0,
2096 (symint_t) 0);
2097
2098 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next)
2099 ;
2100 *pf = ptag->forward_ref;
2101 }
2102 \f
2103 /* Add a procedure to the current file's list of procedures, and record
2104 this is the current procedure. */
2105
2106 static void
2107 add_procedure (char *func /* func name */)
2108 {
2109 register varray_t *vp;
2110 register proc_t *new_proc_ptr;
2111 symbolS *sym;
2112
2113 #ifdef ECOFF_DEBUG
2114 if (debug)
2115 fputc ('\n', stderr);
2116 #endif
2117
2118 if (cur_file_ptr == (efdr_t *) NULL)
2119 as_fatal (_("no current file pointer"));
2120
2121 vp = &cur_file_ptr->procs;
2122
2123 if (vp->objects_last_page == vp->objects_per_page)
2124 add_varray_page (vp);
2125
2126 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++];
2127
2128 if (first_proc_ptr == (proc_t *) NULL)
2129 first_proc_ptr = new_proc_ptr;
2130
2131 vp->num_allocated++;
2132
2133 new_proc_ptr->pdr.isym = -1;
2134 new_proc_ptr->pdr.iline = -1;
2135 new_proc_ptr->pdr.lnLow = -1;
2136 new_proc_ptr->pdr.lnHigh = -1;
2137
2138 /* Set the BSF_FUNCTION flag for the symbol. */
2139 sym = symbol_find_or_make (func);
2140 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION;
2141
2142 /* Push the start of the function. */
2143 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text,
2144 sym, (bfd_vma) 0, (symint_t) 0,
2145 (symint_t) 0);
2146
2147 ++proc_cnt;
2148
2149 /* Fill in the linenos preceding the .ent, if any. */
2150 if (noproc_lineno != (lineno_list_t *) NULL)
2151 {
2152 lineno_list_t *l;
2153
2154 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next)
2155 l->proc = new_proc_ptr;
2156 *last_lineno_ptr = noproc_lineno;
2157 while (*last_lineno_ptr != NULL)
2158 {
2159 last_lineno = *last_lineno_ptr;
2160 last_lineno_ptr = &last_lineno->next;
2161 }
2162 noproc_lineno = (lineno_list_t *) NULL;
2163 }
2164 }
2165
2166 symbolS *
2167 ecoff_get_cur_proc_sym (void)
2168 {
2169 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL);
2170 }
2171 \f
2172 /* Add a new filename, and set up all of the file relative
2173 virtual arrays (strings, symbols, aux syms, etc.). Record
2174 where the current file structure lives. */
2175
2176 static void
2177 add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake)
2178 {
2179 register int first_ch;
2180 register efdr_t *fil_ptr;
2181
2182 #ifdef ECOFF_DEBUG
2183 if (debug)
2184 fprintf (stderr, "\tfile\t%.*s\n", len, file_start);
2185 #endif
2186
2187 /* If the file name is NULL, then no .file symbol appeared, and we
2188 want to use the actual file name. */
2189 if (file_name == (const char *) NULL)
2190 {
2191 char *file;
2192
2193 if (first_file != (efdr_t *) NULL)
2194 as_fatal (_("fake .file after real one"));
2195 as_where (&file, (unsigned int *) NULL);
2196 file_name = (const char *) file;
2197
2198 /* Automatically generate ECOFF debugging information, since I
2199 think that's what other ECOFF assemblers do. We don't do
2200 this if we see a .file directive with a string, since that
2201 implies that some sort of debugging information is being
2202 provided. */
2203 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED)
2204 debug_type = DEBUG_ECOFF;
2205 }
2206 else if (debug_type == DEBUG_UNSPECIFIED)
2207 debug_type = DEBUG_NONE;
2208
2209 #ifndef NO_LISTING
2210 if (listing)
2211 listing_source_file (file_name);
2212 #endif
2213
2214 current_stabs_filename = file_name;
2215
2216 /* If we're creating stabs, then we don't actually make a new FDR.
2217 Instead, we just create a stabs symbol. */
2218 if (stabs_seen)
2219 {
2220 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2221 symbol_new ("L0\001", now_seg,
2222 (valueT) frag_now_fix (),
2223 frag_now),
2224 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL));
2225 return;
2226 }
2227
2228 first_ch = *file_name;
2229
2230 /* FIXME: We can't safely merge files which have line number
2231 information (fMerge will be zero in this case). Otherwise, we
2232 get incorrect line number debugging info. See for instance
2233 ecoff_build_lineno, which will end up setting all file->fdr.*
2234 fields multiple times, resulting in incorrect debug info. In
2235 order to make this work right, all line number and symbol info
2236 for the same source file has to be adjacent in the object file,
2237 so that a single file descriptor can be used to point to them.
2238 This would require maintaining file specific lists of line
2239 numbers and symbols for each file, so that they can be merged
2240 together (or output together) when two .file pseudo-ops are
2241 merged into one file descriptor. */
2242
2243 /* See if the file has already been created. */
2244 for (fil_ptr = first_file;
2245 fil_ptr != (efdr_t *) NULL;
2246 fil_ptr = fil_ptr->next_file)
2247 {
2248 if (first_ch == fil_ptr->name[0]
2249 && strcmp (file_name, fil_ptr->name) == 0
2250 && fil_ptr->fdr.fMerge)
2251 {
2252 cur_file_ptr = fil_ptr;
2253 if (! fake)
2254 cur_file_ptr->fake = 0;
2255 break;
2256 }
2257 }
2258
2259 /* If this is a new file, create it. */
2260 if (fil_ptr == (efdr_t *) NULL)
2261 {
2262 if (file_desc.objects_last_page == file_desc.objects_per_page)
2263 add_varray_page (&file_desc);
2264
2265 fil_ptr = cur_file_ptr =
2266 &file_desc.last->datum->file[file_desc.objects_last_page++];
2267 *fil_ptr = init_file;
2268
2269 fil_ptr->file_index = current_file_idx++;
2270 ++file_desc.num_allocated;
2271
2272 fil_ptr->fake = fake;
2273
2274 /* Allocate the string hash table. */
2275 fil_ptr->str_hash = hash_new ();
2276
2277 /* Make sure 0 byte in string table is null */
2278 add_string (&fil_ptr->strings,
2279 fil_ptr->str_hash,
2280 "",
2281 (shash_t **)0);
2282
2283 if (strlen (file_name) > PAGE_USIZE - 2)
2284 as_fatal (_("filename goes over one page boundary"));
2285
2286 /* Push the start of the filename. We assume that the filename
2287 will be stored at string offset 1. */
2288 (void) add_ecoff_symbol (file_name, st_File, sc_Text,
2289 (symbolS *) NULL, (bfd_vma) 0,
2290 (symint_t) 0, (symint_t) 0);
2291 fil_ptr->fdr.rss = 1;
2292 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1];
2293
2294 /* Update the linked list of file descriptors. */
2295 *last_file_ptr = fil_ptr;
2296 last_file_ptr = &fil_ptr->next_file;
2297
2298 /* Add void & int types to the file (void should be first to catch
2299 errant 0's within the index fields). */
2300 fil_ptr->void_type = add_aux_sym_tir (&void_type_info,
2301 hash_yes,
2302 &cur_file_ptr->thash_head[0]);
2303
2304 fil_ptr->int_type = add_aux_sym_tir (&int_type_info,
2305 hash_yes,
2306 &cur_file_ptr->thash_head[0]);
2307 }
2308 }
2309
2310 /* This function is called when the assembler notices a preprocessor
2311 directive switching to a new file. This will not happen in
2312 compiler output, only in hand coded assembler. */
2313
2314 void
2315 ecoff_new_file (const char *name)
2316 {
2317 if (cur_file_ptr != NULL && strcmp (cur_file_ptr->name, name) == 0)
2318 return;
2319 add_file (name, 0, 0);
2320
2321 /* This is a hand coded assembler file, so automatically turn on
2322 debugging information. */
2323 if (debug_type == DEBUG_UNSPECIFIED)
2324 debug_type = DEBUG_ECOFF;
2325 }
2326 \f
2327 #ifdef ECOFF_DEBUG
2328
2329 /* Convert storage class to string. */
2330
2331 static char *
2332 sc_to_string (storage_class)
2333 sc_t storage_class;
2334 {
2335 switch (storage_class)
2336 {
2337 case sc_Nil: return "Nil,";
2338 case sc_Text: return "Text,";
2339 case sc_Data: return "Data,";
2340 case sc_Bss: return "Bss,";
2341 case sc_Register: return "Register,";
2342 case sc_Abs: return "Abs,";
2343 case sc_Undefined: return "Undefined,";
2344 case sc_CdbLocal: return "CdbLocal,";
2345 case sc_Bits: return "Bits,";
2346 case sc_CdbSystem: return "CdbSystem,";
2347 case sc_RegImage: return "RegImage,";
2348 case sc_Info: return "Info,";
2349 case sc_UserStruct: return "UserStruct,";
2350 case sc_SData: return "SData,";
2351 case sc_SBss: return "SBss,";
2352 case sc_RData: return "RData,";
2353 case sc_Var: return "Var,";
2354 case sc_Common: return "Common,";
2355 case sc_SCommon: return "SCommon,";
2356 case sc_VarRegister: return "VarRegister,";
2357 case sc_Variant: return "Variant,";
2358 case sc_SUndefined: return "SUndefined,";
2359 case sc_Init: return "Init,";
2360 case sc_Max: return "Max,";
2361 }
2362
2363 return "???,";
2364 }
2365
2366 #endif /* DEBUG */
2367 \f
2368 #ifdef ECOFF_DEBUG
2369
2370 /* Convert symbol type to string. */
2371
2372 static char *
2373 st_to_string (symbol_type)
2374 st_t symbol_type;
2375 {
2376 switch (symbol_type)
2377 {
2378 case st_Nil: return "Nil,";
2379 case st_Global: return "Global,";
2380 case st_Static: return "Static,";
2381 case st_Param: return "Param,";
2382 case st_Local: return "Local,";
2383 case st_Label: return "Label,";
2384 case st_Proc: return "Proc,";
2385 case st_Block: return "Block,";
2386 case st_End: return "End,";
2387 case st_Member: return "Member,";
2388 case st_Typedef: return "Typedef,";
2389 case st_File: return "File,";
2390 case st_RegReloc: return "RegReloc,";
2391 case st_Forward: return "Forward,";
2392 case st_StaticProc: return "StaticProc,";
2393 case st_Constant: return "Constant,";
2394 case st_Str: return "String,";
2395 case st_Number: return "Number,";
2396 case st_Expr: return "Expr,";
2397 case st_Type: return "Type,";
2398 case st_Max: return "Max,";
2399 }
2400
2401 return "???,";
2402 }
2403
2404 #endif /* DEBUG */
2405 \f
2406 /* Parse .begin directives which have a label as the first argument
2407 which gives the location of the start of the block. */
2408
2409 void
2410 ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED)
2411 {
2412 char *name;
2413 char name_end;
2414
2415 if (cur_file_ptr == (efdr_t *) NULL)
2416 {
2417 as_warn (_(".begin directive without a preceding .file directive"));
2418 demand_empty_rest_of_line ();
2419 return;
2420 }
2421
2422 if (cur_proc_ptr == (proc_t *) NULL)
2423 {
2424 as_warn (_(".begin directive without a preceding .ent directive"));
2425 demand_empty_rest_of_line ();
2426 return;
2427 }
2428
2429 name = input_line_pointer;
2430 name_end = get_symbol_end ();
2431
2432 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text,
2433 symbol_find_or_make (name),
2434 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2435
2436 *input_line_pointer = name_end;
2437
2438 /* The line number follows, but we don't use it. */
2439 (void) get_absolute_expression ();
2440 demand_empty_rest_of_line ();
2441 }
2442 \f
2443 /* Parse .bend directives which have a label as the first argument
2444 which gives the location of the end of the block. */
2445
2446 void
2447 ecoff_directive_bend (int ignore ATTRIBUTE_UNUSED)
2448 {
2449 char *name;
2450 char name_end;
2451 symbolS *endsym;
2452
2453 if (cur_file_ptr == (efdr_t *) NULL)
2454 {
2455 as_warn (_(".bend directive without a preceding .file directive"));
2456 demand_empty_rest_of_line ();
2457 return;
2458 }
2459
2460 if (cur_proc_ptr == (proc_t *) NULL)
2461 {
2462 as_warn (_(".bend directive without a preceding .ent directive"));
2463 demand_empty_rest_of_line ();
2464 return;
2465 }
2466
2467 name = input_line_pointer;
2468 name_end = get_symbol_end ();
2469
2470 /* The value is the distance between the .bend directive and the
2471 corresponding symbol. We fill in the offset when we write out
2472 the symbol. */
2473 endsym = symbol_find (name);
2474 if (endsym == (symbolS *) NULL)
2475 as_warn (_(".bend directive names unknown symbol"));
2476 else
2477 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym,
2478 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2479
2480 *input_line_pointer = name_end;
2481
2482 /* The line number follows, but we don't use it. */
2483 (void) get_absolute_expression ();
2484 demand_empty_rest_of_line ();
2485 }
2486 \f
2487 /* COFF debugging information is provided as a series of directives
2488 (.def, .scl, etc.). We build up information as we read the
2489 directives in the following static variables, and file it away when
2490 we reach the .endef directive. */
2491 static char *coff_sym_name;
2492 static type_info_t coff_type;
2493 static sc_t coff_storage_class;
2494 static st_t coff_symbol_typ;
2495 static int coff_is_function;
2496 static char *coff_tag;
2497 static valueT coff_value;
2498 static symbolS *coff_sym_value;
2499 static bfd_vma coff_sym_addend;
2500 static int coff_inside_enumeration;
2501
2502 /* Handle a .def directive: start defining a symbol. */
2503
2504 void
2505 ecoff_directive_def (int ignore ATTRIBUTE_UNUSED)
2506 {
2507 char *name;
2508 char name_end;
2509
2510 ecoff_debugging_seen = 1;
2511
2512 SKIP_WHITESPACE ();
2513
2514 name = input_line_pointer;
2515 name_end = get_symbol_end ();
2516
2517 if (coff_sym_name != (char *) NULL)
2518 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored"));
2519 else if (*name == '\0')
2520 as_warn (_("empty symbol name in .def; ignored"));
2521 else
2522 {
2523 if (coff_sym_name != (char *) NULL)
2524 free (coff_sym_name);
2525 if (coff_tag != (char *) NULL)
2526 free (coff_tag);
2527
2528 coff_sym_name = xstrdup (name);
2529 coff_type = type_info_init;
2530 coff_storage_class = sc_Nil;
2531 coff_symbol_typ = st_Nil;
2532 coff_is_function = 0;
2533 coff_tag = (char *) NULL;
2534 coff_value = 0;
2535 coff_sym_value = (symbolS *) NULL;
2536 coff_sym_addend = 0;
2537 }
2538
2539 *input_line_pointer = name_end;
2540
2541 demand_empty_rest_of_line ();
2542 }
2543
2544 /* Handle a .dim directive, used to give dimensions for an array. The
2545 arguments are comma separated numbers. mips-tfile assumes that
2546 there will not be more than 6 dimensions, and gdb won't read any
2547 more than that anyhow, so I will also make that assumption. */
2548
2549 void
2550 ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED)
2551 {
2552 int dimens[N_TQ];
2553 int i;
2554
2555 if (coff_sym_name == (char *) NULL)
2556 {
2557 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored"));
2558 demand_empty_rest_of_line ();
2559 return;
2560 }
2561
2562 for (i = 0; i < N_TQ; i++)
2563 {
2564 SKIP_WHITESPACE ();
2565 dimens[i] = get_absolute_expression ();
2566 if (*input_line_pointer == ',')
2567 ++input_line_pointer;
2568 else
2569 {
2570 if (*input_line_pointer != '\n'
2571 && *input_line_pointer != ';')
2572 as_warn (_("badly formed .dim directive"));
2573 break;
2574 }
2575 }
2576
2577 if (i == N_TQ)
2578 --i;
2579
2580 /* The dimensions are stored away in reverse order. */
2581 for (; i >= 0; i--)
2582 {
2583 if (coff_type.num_dims >= N_TQ)
2584 {
2585 as_warn (_("too many .dim entries"));
2586 break;
2587 }
2588 coff_type.dimensions[coff_type.num_dims] = dimens[i];
2589 ++coff_type.num_dims;
2590 }
2591
2592 demand_empty_rest_of_line ();
2593 }
2594
2595 /* Handle a .scl directive, which sets the COFF storage class of the
2596 symbol. */
2597
2598 void
2599 ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED)
2600 {
2601 long val;
2602
2603 if (coff_sym_name == (char *) NULL)
2604 {
2605 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored"));
2606 demand_empty_rest_of_line ();
2607 return;
2608 }
2609
2610 val = get_absolute_expression ();
2611
2612 coff_symbol_typ = map_coff_sym_type[val];
2613 coff_storage_class = map_coff_storage[val];
2614
2615 demand_empty_rest_of_line ();
2616 }
2617
2618 /* Handle a .size directive. For some reason mips-tfile.c thinks that
2619 .size can have multiple arguments. We humor it, although gcc will
2620 never generate more than one argument. */
2621
2622 void
2623 ecoff_directive_size (int ignore ATTRIBUTE_UNUSED)
2624 {
2625 int sizes[N_TQ];
2626 int i;
2627
2628 if (coff_sym_name == (char *) NULL)
2629 {
2630 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored"));
2631 demand_empty_rest_of_line ();
2632 return;
2633 }
2634
2635 for (i = 0; i < N_TQ; i++)
2636 {
2637 SKIP_WHITESPACE ();
2638 sizes[i] = get_absolute_expression ();
2639 if (*input_line_pointer == ',')
2640 ++input_line_pointer;
2641 else
2642 {
2643 if (*input_line_pointer != '\n'
2644 && *input_line_pointer != ';')
2645 as_warn (_("badly formed .size directive"));
2646 break;
2647 }
2648 }
2649
2650 if (i == N_TQ)
2651 --i;
2652
2653 /* The sizes are stored away in reverse order. */
2654 for (; i >= 0; i--)
2655 {
2656 if (coff_type.num_sizes >= N_TQ)
2657 {
2658 as_warn (_("too many .size entries"));
2659 break;
2660 }
2661 coff_type.sizes[coff_type.num_sizes] = sizes[i];
2662 ++coff_type.num_sizes;
2663 }
2664
2665 demand_empty_rest_of_line ();
2666 }
2667
2668 /* Handle the .type directive, which gives the COFF type of the
2669 symbol. */
2670
2671 void
2672 ecoff_directive_type (int ignore ATTRIBUTE_UNUSED)
2673 {
2674 long val;
2675 tq_t *tq_ptr;
2676 tq_t *tq_shft;
2677
2678 if (coff_sym_name == (char *) NULL)
2679 {
2680 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored"));
2681 demand_empty_rest_of_line ();
2682 return;
2683 }
2684
2685 val = get_absolute_expression ();
2686
2687 coff_type.orig_type = BTYPE (val);
2688 coff_type.basic_type = map_coff_types[coff_type.orig_type];
2689
2690 tq_ptr = &coff_type.type_qualifiers[N_TQ];
2691 while (val & ~N_BTMASK)
2692 {
2693 if (tq_ptr == &coff_type.type_qualifiers[0])
2694 {
2695 /* FIXME: We could handle this by setting the continued bit.
2696 There would still be a limit: the .type argument can not
2697 be infinite. */
2698 as_warn (_("the type of %s is too complex; it will be simplified"),
2699 coff_sym_name);
2700 break;
2701 }
2702 if (ISPTR (val))
2703 *--tq_ptr = tq_Ptr;
2704 else if (ISFCN (val))
2705 *--tq_ptr = tq_Proc;
2706 else if (ISARY (val))
2707 *--tq_ptr = tq_Array;
2708 else
2709 as_fatal (_("Unrecognized .type argument"));
2710
2711 val = DECREF (val);
2712 }
2713
2714 tq_shft = &coff_type.type_qualifiers[0];
2715 while (tq_ptr != &coff_type.type_qualifiers[N_TQ])
2716 *tq_shft++ = *tq_ptr++;
2717
2718 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc)
2719 {
2720 /* If this is a function, ignore it, so that we don't get two
2721 entries (one from the .ent, and one for the .def that
2722 precedes it). Save the type information so that the end
2723 block can properly add it after the begin block index. For
2724 MIPS knows what reason, we must strip off the function type
2725 at this point. */
2726 coff_is_function = 1;
2727 tq_shft[-1] = tq_Nil;
2728 }
2729
2730 while (tq_shft != &coff_type.type_qualifiers[N_TQ])
2731 *tq_shft++ = tq_Nil;
2732
2733 demand_empty_rest_of_line ();
2734 }
2735
2736 /* Handle the .tag directive, which gives the name of a structure,
2737 union or enum. */
2738
2739 void
2740 ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED)
2741 {
2742 char *name;
2743 char name_end;
2744
2745 if (coff_sym_name == (char *) NULL)
2746 {
2747 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored"));
2748 demand_empty_rest_of_line ();
2749 return;
2750 }
2751
2752 name = input_line_pointer;
2753 name_end = get_symbol_end ();
2754
2755 coff_tag = xstrdup (name);
2756
2757 *input_line_pointer = name_end;
2758
2759 demand_empty_rest_of_line ();
2760 }
2761
2762 /* Handle the .val directive, which gives the value of the symbol. It
2763 may be the name of a static or global symbol. */
2764
2765 void
2766 ecoff_directive_val (int ignore ATTRIBUTE_UNUSED)
2767 {
2768 expressionS exp;
2769
2770 if (coff_sym_name == (char *) NULL)
2771 {
2772 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored"));
2773 demand_empty_rest_of_line ();
2774 return;
2775 }
2776
2777 expression (&exp);
2778 if (exp.X_op != O_constant && exp.X_op != O_symbol)
2779 {
2780 as_bad (_(".val expression is too copmlex"));
2781 demand_empty_rest_of_line ();
2782 return;
2783 }
2784
2785 if (exp.X_op == O_constant)
2786 coff_value = exp.X_add_number;
2787 else
2788 {
2789 coff_sym_value = exp.X_add_symbol;
2790 coff_sym_addend = exp.X_add_number;
2791 }
2792
2793 demand_empty_rest_of_line ();
2794 }
2795
2796 /* Handle the .endef directive, which terminates processing of COFF
2797 debugging information for a symbol. */
2798
2799 void
2800 ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED)
2801 {
2802 char *name;
2803 symint_t indx;
2804 localsym_t *sym;
2805
2806 demand_empty_rest_of_line ();
2807
2808 if (coff_sym_name == (char *) NULL)
2809 {
2810 as_warn (_(".endef pseudo-op used before .def; ignored"));
2811 return;
2812 }
2813
2814 name = coff_sym_name;
2815 coff_sym_name = (char *) NULL;
2816
2817 /* If the symbol is a static or external, we have already gotten the
2818 appropriate type and class, so make sure we don't override those
2819 values. This is needed because there are some type and classes
2820 that are not in COFF, such as short data, etc. */
2821 if (coff_sym_value != (symbolS *) NULL)
2822 {
2823 coff_symbol_typ = st_Nil;
2824 coff_storage_class = sc_Nil;
2825 }
2826
2827 coff_type.extra_sizes = coff_tag != (char *) NULL;
2828 if (coff_type.num_dims > 0)
2829 {
2830 int diff = coff_type.num_dims - coff_type.num_sizes;
2831 int i = coff_type.num_dims - 1;
2832 int j;
2833
2834 if (coff_type.num_sizes != 1 || diff < 0)
2835 {
2836 as_warn (_("bad COFF debugging information"));
2837 return;
2838 }
2839
2840 /* If this is an array, make sure the same number of dimensions
2841 and sizes were passed, creating extra sizes for multiply
2842 dimensioned arrays if not passed. */
2843 coff_type.extra_sizes = 0;
2844 if (diff)
2845 {
2846 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1;
2847 while (j >= 0)
2848 {
2849 coff_type.sizes[j] = (((j - diff) >= 0)
2850 ? coff_type.sizes[j - diff]
2851 : 0);
2852 j--;
2853 }
2854
2855 coff_type.num_sizes = i + 1;
2856 for (i--; i >= 0; i--)
2857 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0
2858 ? 0
2859 : (coff_type.sizes[i + 1]
2860 / coff_type.dimensions[i + 1]));
2861 }
2862 }
2863 else if (coff_symbol_typ == st_Member
2864 && coff_type.num_sizes - coff_type.extra_sizes == 1)
2865 {
2866 /* Is this a bitfield? This is indicated by a structure member
2867 having a size field that isn't an array. */
2868 coff_type.bitfield = 1;
2869 }
2870
2871 /* Except for enumeration members & begin/ending of scopes, put the
2872 type word in the aux. symbol table. */
2873 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End)
2874 indx = 0;
2875 else if (coff_inside_enumeration)
2876 indx = cur_file_ptr->void_type;
2877 else
2878 {
2879 if (coff_type.basic_type == bt_Struct
2880 || coff_type.basic_type == bt_Union
2881 || coff_type.basic_type == bt_Enum)
2882 {
2883 if (coff_tag == (char *) NULL)
2884 {
2885 as_warn (_("no tag specified for %s"), name);
2886 return;
2887 }
2888
2889 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL,
2890 coff_type.basic_type);
2891 }
2892
2893 if (coff_is_function)
2894 {
2895 last_func_type_info = coff_type;
2896 last_func_sym_value = coff_sym_value;
2897 return;
2898 }
2899
2900 indx = add_aux_sym_tir (&coff_type,
2901 hash_yes,
2902 &cur_file_ptr->thash_head[0]);
2903 }
2904
2905 /* Do any last minute adjustments that are necessary. */
2906 switch (coff_symbol_typ)
2907 {
2908 default:
2909 break;
2910
2911 /* For the beginning of structs, unions, and enumerations, the
2912 size info needs to be passed in the value field. */
2913 case st_Block:
2914 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes
2915 != 1)
2916 {
2917 as_warn (_("bad COFF debugging information"));
2918 return;
2919 }
2920 else
2921 coff_value = coff_type.sizes[0];
2922
2923 coff_inside_enumeration = (coff_type.orig_type == T_ENUM);
2924 break;
2925
2926 /* For the end of structs, unions, and enumerations, omit the
2927 name which is always ".eos". This needs to be done last, so
2928 that any error reporting above gives the correct name. */
2929 case st_End:
2930 free (name);
2931 name = (char *) NULL;
2932 coff_value = 0;
2933 coff_inside_enumeration = 0;
2934 break;
2935
2936 /* Members of structures and unions that aren't bitfields, need
2937 to adjust the value from a byte offset to a bit offset.
2938 Members of enumerations do not have the value adjusted, and
2939 can be distinguished by indx == indexNil. For enumerations,
2940 update the maximum enumeration value. */
2941 case st_Member:
2942 if (! coff_type.bitfield && ! coff_inside_enumeration)
2943 coff_value *= 8;
2944
2945 break;
2946 }
2947
2948 /* Add the symbol. */
2949 sym = add_ecoff_symbol (name,
2950 coff_symbol_typ,
2951 coff_storage_class,
2952 coff_sym_value,
2953 coff_sym_addend,
2954 (symint_t) coff_value,
2955 indx);
2956
2957 /* deal with struct, union, and enum tags. */
2958 if (coff_symbol_typ == st_Block)
2959 {
2960 /* Create or update the tag information. */
2961 tag_t *tag_ptr = get_tag (name,
2962 sym,
2963 coff_type.basic_type);
2964 forward_t **pf;
2965
2966 /* Remember any forward references. */
2967 for (pf = &sym->forward_ref;
2968 *pf != (forward_t *) NULL;
2969 pf = &(*pf)->next)
2970 ;
2971 *pf = tag_ptr->forward_ref;
2972 tag_ptr->forward_ref = (forward_t *) NULL;
2973 }
2974 }
2975 \f
2976 /* Parse .end directives. */
2977
2978 void
2979 ecoff_directive_end (int ignore ATTRIBUTE_UNUSED)
2980 {
2981 char *name;
2982 char name_end;
2983 symbolS *ent;
2984
2985 if (cur_file_ptr == (efdr_t *) NULL)
2986 {
2987 as_warn (_(".end directive without a preceding .file directive"));
2988 demand_empty_rest_of_line ();
2989 return;
2990 }
2991
2992 if (cur_proc_ptr == (proc_t *) NULL)
2993 {
2994 as_warn (_(".end directive without a preceding .ent directive"));
2995 demand_empty_rest_of_line ();
2996 return;
2997 }
2998
2999 name = input_line_pointer;
3000 name_end = get_symbol_end ();
3001
3002 if (name == input_line_pointer)
3003 {
3004 as_warn (_(".end directive has no name"));
3005 *input_line_pointer = name_end;
3006 demand_empty_rest_of_line ();
3007 return;
3008 }
3009
3010 /* The value is the distance between the .end directive and the
3011 corresponding symbol. We create a fake symbol to hold the
3012 current location, and put in the offset when we write out the
3013 symbol. */
3014 ent = symbol_find (name);
3015 if (ent == (symbolS *) NULL)
3016 as_warn (_(".end directive names unknown symbol"));
3017 else
3018 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text,
3019 symbol_new ("L0\001", now_seg,
3020 (valueT) frag_now_fix (),
3021 frag_now),
3022 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
3023
3024 cur_proc_ptr = (proc_t *) NULL;
3025
3026 *input_line_pointer = name_end;
3027 demand_empty_rest_of_line ();
3028 }
3029 \f
3030 /* Parse .ent directives. */
3031
3032 void
3033 ecoff_directive_ent (int ignore ATTRIBUTE_UNUSED)
3034 {
3035 char *name;
3036 char name_end;
3037
3038 if (cur_file_ptr == (efdr_t *) NULL)
3039 add_file ((const char *) NULL, 0, 1);
3040
3041 if (cur_proc_ptr != (proc_t *) NULL)
3042 {
3043 as_warn (_("second .ent directive found before .end directive"));
3044 demand_empty_rest_of_line ();
3045 return;
3046 }
3047
3048 name = input_line_pointer;
3049 name_end = get_symbol_end ();
3050
3051 if (name == input_line_pointer)
3052 {
3053 as_warn (_(".ent directive has no name"));
3054 *input_line_pointer = name_end;
3055 demand_empty_rest_of_line ();
3056 return;
3057 }
3058
3059 add_procedure (name);
3060
3061 *input_line_pointer = name_end;
3062
3063 /* The .ent directive is sometimes followed by a number. I'm not
3064 really sure what the number means. I don't see any way to store
3065 the information in the PDR. The Irix 4 assembler seems to ignore
3066 the information. */
3067 SKIP_WHITESPACE ();
3068 if (*input_line_pointer == ',')
3069 {
3070 ++input_line_pointer;
3071 SKIP_WHITESPACE ();
3072 }
3073 if (ISDIGIT (*input_line_pointer)
3074 || *input_line_pointer == '-')
3075 (void) get_absolute_expression ();
3076
3077 demand_empty_rest_of_line ();
3078 }
3079 \f
3080 /* Parse .extern directives. */
3081
3082 void
3083 ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED)
3084 {
3085 char *name;
3086 int c;
3087 symbolS *symbolp;
3088 valueT size;
3089
3090 name = input_line_pointer;
3091 c = get_symbol_end ();
3092 symbolp = symbol_find_or_make (name);
3093 *input_line_pointer = c;
3094
3095 S_SET_EXTERNAL (symbolp);
3096
3097 if (*input_line_pointer == ',')
3098 ++input_line_pointer;
3099 size = get_absolute_expression ();
3100
3101 symbol_get_obj (symbolp)->ecoff_extern_size = size;
3102 }
3103 \f
3104 /* Parse .file directives. */
3105
3106 void
3107 ecoff_directive_file (int ignore ATTRIBUTE_UNUSED)
3108 {
3109 int indx;
3110 char *name;
3111 int len;
3112
3113 if (cur_proc_ptr != (proc_t *) NULL)
3114 {
3115 as_warn (_("no way to handle .file within .ent/.end section"));
3116 demand_empty_rest_of_line ();
3117 return;
3118 }
3119
3120 indx = (int) get_absolute_expression ();
3121
3122 /* FIXME: we don't have to save the name here. */
3123 name = demand_copy_C_string (&len);
3124
3125 add_file (name, indx - 1, 0);
3126
3127 demand_empty_rest_of_line ();
3128 }
3129 \f
3130 /* Parse .fmask directives. */
3131
3132 void
3133 ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED)
3134 {
3135 long val;
3136
3137 if (cur_proc_ptr == (proc_t *) NULL)
3138 {
3139 as_warn (_(".fmask outside of .ent"));
3140 demand_empty_rest_of_line ();
3141 return;
3142 }
3143
3144 if (get_absolute_expression_and_terminator (&val) != ',')
3145 {
3146 as_warn (_("bad .fmask directive"));
3147 --input_line_pointer;
3148 demand_empty_rest_of_line ();
3149 return;
3150 }
3151
3152 cur_proc_ptr->pdr.fregmask = val;
3153 cur_proc_ptr->pdr.fregoffset = get_absolute_expression ();
3154
3155 demand_empty_rest_of_line ();
3156 }
3157 \f
3158 /* Parse .frame directives. */
3159
3160 void
3161 ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED)
3162 {
3163 long val;
3164
3165 if (cur_proc_ptr == (proc_t *) NULL)
3166 {
3167 as_warn (_(".frame outside of .ent"));
3168 demand_empty_rest_of_line ();
3169 return;
3170 }
3171
3172 cur_proc_ptr->pdr.framereg = tc_get_register (1);
3173
3174 SKIP_WHITESPACE ();
3175 if (*input_line_pointer++ != ','
3176 || get_absolute_expression_and_terminator (&val) != ',')
3177 {
3178 as_warn (_("bad .frame directive"));
3179 --input_line_pointer;
3180 demand_empty_rest_of_line ();
3181 return;
3182 }
3183
3184 cur_proc_ptr->pdr.frameoffset = val;
3185
3186 cur_proc_ptr->pdr.pcreg = tc_get_register (0);
3187
3188 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to
3189 Sandro. I don't yet know where this value should be stored, if
3190 anywhere. Don't call demand_empty_rest_of_line (). */
3191 s_ignore (42);
3192 }
3193 \f
3194 /* Parse .mask directives. */
3195
3196 void
3197 ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED)
3198 {
3199 long val;
3200
3201 if (cur_proc_ptr == (proc_t *) NULL)
3202 {
3203 as_warn (_(".mask outside of .ent"));
3204 demand_empty_rest_of_line ();
3205 return;
3206 }
3207
3208 if (get_absolute_expression_and_terminator (&val) != ',')
3209 {
3210 as_warn (_("bad .mask directive"));
3211 --input_line_pointer;
3212 demand_empty_rest_of_line ();
3213 return;
3214 }
3215
3216 cur_proc_ptr->pdr.regmask = val;
3217 cur_proc_ptr->pdr.regoffset = get_absolute_expression ();
3218
3219 demand_empty_rest_of_line ();
3220 }
3221 \f
3222 /* Parse .loc directives. */
3223
3224 void
3225 ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED)
3226 {
3227 lineno_list_t *list;
3228 symint_t lineno;
3229
3230 if (cur_file_ptr == (efdr_t *) NULL)
3231 {
3232 as_warn (_(".loc before .file"));
3233 demand_empty_rest_of_line ();
3234 return;
3235 }
3236
3237 if (now_seg != text_section)
3238 {
3239 as_warn (_(".loc outside of .text"));
3240 demand_empty_rest_of_line ();
3241 return;
3242 }
3243
3244 /* Skip the file number. */
3245 SKIP_WHITESPACE ();
3246 get_absolute_expression ();
3247 SKIP_WHITESPACE ();
3248
3249 lineno = get_absolute_expression ();
3250
3251 #ifndef NO_LISTING
3252 if (listing)
3253 listing_source_line (lineno);
3254 #endif
3255
3256 /* If we're building stabs, then output a special label rather than
3257 ECOFF line number info. */
3258 if (stabs_seen)
3259 {
3260 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text,
3261 symbol_new ("L0\001", now_seg,
3262 (valueT) frag_now_fix (),
3263 frag_now),
3264 (bfd_vma) 0, 0, lineno);
3265 return;
3266 }
3267
3268 list = allocate_lineno_list ();
3269
3270 list->next = (lineno_list_t *) NULL;
3271 list->file = cur_file_ptr;
3272 list->proc = cur_proc_ptr;
3273 list->frag = frag_now;
3274 list->paddr = frag_now_fix ();
3275 list->lineno = lineno;
3276
3277 /* We don't want to merge files which have line numbers. */
3278 cur_file_ptr->fdr.fMerge = 0;
3279
3280 /* A .loc directive will sometimes appear before a .ent directive,
3281 which means that cur_proc_ptr will be NULL here. Arrange to
3282 patch this up. */
3283 if (cur_proc_ptr == (proc_t *) NULL)
3284 {
3285 lineno_list_t **pl;
3286
3287 pl = &noproc_lineno;
3288 while (*pl != (lineno_list_t *) NULL)
3289 pl = &(*pl)->next;
3290 *pl = list;
3291 }
3292 else
3293 {
3294 last_lineno = list;
3295 *last_lineno_ptr = list;
3296 last_lineno_ptr = &list->next;
3297 }
3298 }
3299
3300 /* The MIPS assembler sometimes inserts nop instructions in the
3301 instruction stream. When this happens, we must patch up the .loc
3302 information so that it points to the instruction after the nop. */
3303
3304 void
3305 ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset)
3306 {
3307 if (last_lineno != NULL
3308 && last_lineno->frag == old_frag
3309 && last_lineno->paddr == old_frag_offset)
3310 {
3311 last_lineno->frag = frag_now;
3312 last_lineno->paddr = frag_now_fix ();
3313 }
3314 }
3315 \f
3316 /* Make sure the @stabs symbol is emitted. */
3317
3318 static void
3319 mark_stabs (int ignore ATTRIBUTE_UNUSED)
3320 {
3321 if (! stabs_seen)
3322 {
3323 /* Add a dummy @stabs dymbol. */
3324 stabs_seen = 1;
3325 (void) add_ecoff_symbol (stabs_symbol, stNil, scInfo,
3326 (symbolS *) NULL,
3327 (bfd_vma) 0, (symint_t) -1,
3328 ECOFF_MARK_STAB (0));
3329 }
3330 }
3331 \f
3332 /* Parse .weakext directives. */
3333 #ifndef TC_MIPS
3334 /* For TC_MIPS use the version in tc-mips.c. */
3335 void
3336 ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED)
3337 {
3338 char *name;
3339 int c;
3340 symbolS *symbolP;
3341 expressionS exp;
3342
3343 name = input_line_pointer;
3344 c = get_symbol_end ();
3345 symbolP = symbol_find_or_make (name);
3346 *input_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 = input_line_pointer;
3485 name_end = get_symbol_end ();
3486
3487 sym = symbol_find_or_make (name);
3488 *input_line_pointer = name_end;
3489
3490 value = 0;
3491 addend = 0;
3492 st = st_Label;
3493 sc = sc_Text;
3494 indx = desc;
3495 }
3496 else
3497 {
3498 #ifndef NO_LISTING
3499 if (listing && (type == N_SO || type == N_SOL))
3500 listing_source_file (string);
3501 #endif
3502
3503 if (ISDIGIT (*input_line_pointer)
3504 || *input_line_pointer == '-'
3505 || *input_line_pointer == '+')
3506 {
3507 st = st_Nil;
3508 sc = sc_Nil;
3509 sym = (symbolS *) NULL;
3510 value = get_absolute_expression ();
3511 addend = 0;
3512 }
3513 else if (! is_name_beginner ((unsigned char) *input_line_pointer))
3514 {
3515 as_warn (_("illegal .stab%c directive, bad character"), what);
3516 return;
3517 }
3518 else
3519 {
3520 expressionS exp;
3521
3522 sc = sc_Nil;
3523 st = st_Nil;
3524
3525 expression (&exp);
3526 if (exp.X_op == O_constant)
3527 {
3528 sym = NULL;
3529 value = exp.X_add_number;
3530 addend = 0;
3531 }
3532 else if (exp.X_op == O_symbol)
3533 {
3534 sym = exp.X_add_symbol;
3535 value = 0;
3536 addend = exp.X_add_number;
3537 }
3538 else
3539 {
3540 sym = make_expr_symbol (&exp);
3541 value = 0;
3542 addend = 0;
3543 }
3544 }
3545
3546 indx = ECOFF_MARK_STAB (type);
3547 }
3548
3549 /* Don't store the stabs symbol we are creating as the type of the
3550 ECOFF symbol. We want to compute the type of the ECOFF symbol
3551 independently. */
3552 if (sym != (symbolS *) NULL)
3553 hold = symbol_get_obj (sym)->ecoff_symbol;
3554
3555 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx);
3556
3557 if (sym != (symbolS *) NULL)
3558 symbol_get_obj (sym)->ecoff_symbol = hold;
3559
3560 /* Restore normal file type. */
3561 cur_file_ptr = save_file_ptr;
3562 }
3563 \f
3564 /* Frob an ECOFF symbol. Small common symbols go into a special
3565 .scommon section rather than bfd_com_section. */
3566
3567 void
3568 ecoff_frob_symbol (symbolS *sym)
3569 {
3570 if (S_IS_COMMON (sym)
3571 && S_GET_VALUE (sym) > 0
3572 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput))
3573 {
3574 static asection scom_section;
3575 static asymbol scom_symbol;
3576
3577 /* We must construct a fake section similar to bfd_com_section
3578 but with the name .scommon. */
3579 if (scom_section.name == NULL)
3580 {
3581 scom_section = bfd_com_section;
3582 scom_section.name = ".scommon";
3583 scom_section.output_section = &scom_section;
3584 scom_section.symbol = &scom_symbol;
3585 scom_section.symbol_ptr_ptr = &scom_section.symbol;
3586 scom_symbol = *bfd_com_section.symbol;
3587 scom_symbol.name = ".scommon";
3588 scom_symbol.section = &scom_section;
3589 }
3590 S_SET_SEGMENT (sym, &scom_section);
3591 }
3592
3593 /* Double check weak symbols. */
3594 if (S_IS_WEAK (sym))
3595 {
3596 if (S_IS_COMMON (sym))
3597 as_bad (_("symbol `%s' can not be both weak and common"),
3598 S_GET_NAME (sym));
3599 }
3600 }
3601 \f
3602 /* Add bytes to the symbolic information buffer. */
3603
3604 static char *
3605 ecoff_add_bytes (char **buf,
3606 char **bufend,
3607 char *bufptr,
3608 unsigned long need)
3609 {
3610 unsigned long at;
3611 unsigned long want;
3612
3613 at = bufptr - *buf;
3614 need -= *bufend - bufptr;
3615 if (need < PAGE_SIZE)
3616 need = PAGE_SIZE;
3617 want = (*bufend - *buf) + need;
3618 *buf = xrealloc (*buf, want);
3619 *bufend = *buf + want;
3620 return *buf + at;
3621 }
3622
3623 /* Adjust the symbolic information buffer to the alignment required
3624 for the ECOFF target debugging information. */
3625
3626 static unsigned long
3627 ecoff_padding_adjust (const struct ecoff_debug_swap *backend,
3628 char **buf,
3629 char **bufend,
3630 unsigned long offset,
3631 char **bufptrptr)
3632 {
3633 bfd_size_type align;
3634
3635 align = backend->debug_align;
3636 if ((offset & (align - 1)) != 0)
3637 {
3638 unsigned long add;
3639
3640 add = align - (offset & (align - 1));
3641 if ((unsigned long) (*bufend - (*buf + offset)) < add)
3642 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add);
3643 memset (*buf + offset, 0, add);
3644 offset += add;
3645 if (bufptrptr != (char **) NULL)
3646 *bufptrptr = *buf + offset;
3647 }
3648
3649 return offset;
3650 }
3651
3652 /* Build the line number information. */
3653
3654 static unsigned long
3655 ecoff_build_lineno (const struct ecoff_debug_swap *backend,
3656 char **buf,
3657 char **bufend,
3658 unsigned long offset,
3659 long *linecntptr)
3660 {
3661 char *bufptr;
3662 register lineno_list_t *l;
3663 lineno_list_t *last;
3664 efdr_t *file;
3665 proc_t *proc;
3666 unsigned long c;
3667 long iline;
3668 long totcount;
3669 lineno_list_t first;
3670 lineno_list_t *local_first_lineno = first_lineno;
3671
3672 if (linecntptr != (long *) NULL)
3673 *linecntptr = 0;
3674
3675 bufptr = *buf + offset;
3676
3677 file = (efdr_t *) NULL;
3678 proc = (proc_t *) NULL;
3679 last = (lineno_list_t *) NULL;
3680 c = offset;
3681 iline = 0;
3682 totcount = 0;
3683
3684 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to
3685 remove this code. */
3686 /* For some reason the address of the first procedure is ignored
3687 when reading line numbers. This doesn't matter if the address of
3688 the first procedure is 0, but when gcc is generating MIPS
3689 embedded PIC code, it will put strings in the .text section
3690 before the first procedure. We cope by inserting a dummy line if
3691 the address of the first procedure is not 0. Hopefully this
3692 won't screw things up too badly.
3693
3694 Don't do this for ECOFF assembly source line numbers. They work
3695 without this extra attention. */
3696 if (debug_type != DEBUG_ECOFF
3697 && first_proc_ptr != (proc_t *) NULL
3698 && local_first_lineno != (lineno_list_t *) NULL
3699 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym)
3700 + bfd_get_section_vma (stdoutput,
3701 S_GET_SEGMENT (first_proc_ptr->sym->as_sym)))
3702 != 0))
3703 {
3704 first.file = local_first_lineno->file;
3705 first.proc = local_first_lineno->proc;
3706 first.frag = &zero_address_frag;
3707 first.paddr = 0;
3708 first.lineno = 0;
3709
3710 first.next = local_first_lineno;
3711 local_first_lineno = &first;
3712 }
3713
3714 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next)
3715 {
3716 long count;
3717 long delta;
3718
3719 /* Get the offset to the memory address of the next line number
3720 (in words). Do this first, so that we can skip ahead to the
3721 next useful line number entry. */
3722 if (l->next == (lineno_list_t *) NULL)
3723 {
3724 /* We want a count of zero, but it will be decremented
3725 before it is used. */
3726 count = 1;
3727 }
3728 else if (l->next->frag->fr_address + l->next->paddr
3729 > l->frag->fr_address + l->paddr)
3730 {
3731 count = ((l->next->frag->fr_address + l->next->paddr
3732 - (l->frag->fr_address + l->paddr))
3733 >> 2);
3734 }
3735 else
3736 {
3737 /* Don't change last, so we still get the right delta. */
3738 continue;
3739 }
3740
3741 if (l->file != file || l->proc != proc)
3742 {
3743 if (l->proc != proc && proc != (proc_t *) NULL)
3744 proc->pdr.lnHigh = last->lineno;
3745 if (l->file != file && file != (efdr_t *) NULL)
3746 {
3747 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3748 file->fdr.cline = totcount + count;
3749 if (linecntptr != (long *) NULL)
3750 *linecntptr += totcount + count;
3751 totcount = 0;
3752 }
3753
3754 if (l->file != file)
3755 {
3756 efdr_t *last_file = file;
3757
3758 file = l->file;
3759 if (last_file != (efdr_t *) NULL)
3760 file->fdr.ilineBase
3761 = last_file->fdr.ilineBase + last_file->fdr.cline;
3762 else
3763 file->fdr.ilineBase = 0;
3764 file->fdr.cbLineOffset = c;
3765 }
3766 if (l->proc != proc)
3767 {
3768 proc = l->proc;
3769 if (proc != (proc_t *) NULL)
3770 {
3771 proc->pdr.lnLow = l->lineno;
3772 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset;
3773 proc->pdr.iline = totcount;
3774 }
3775 }
3776
3777 last = (lineno_list_t *) NULL;
3778 }
3779
3780 totcount += count;
3781
3782 /* Get the offset to this line number. */
3783 if (last == (lineno_list_t *) NULL)
3784 delta = 0;
3785 else
3786 delta = l->lineno - last->lineno;
3787
3788 /* Put in the offset to this line number. */
3789 while (delta != 0)
3790 {
3791 int setcount;
3792
3793 /* 1 is added to each count read. */
3794 --count;
3795 /* We can only adjust the word count by up to 15 words at a
3796 time. */
3797 if (count <= 0x0f)
3798 {
3799 setcount = count;
3800 count = 0;
3801 }
3802 else
3803 {
3804 setcount = 0x0f;
3805 count -= 0x0f;
3806 }
3807 if (delta >= -7 && delta <= 7)
3808 {
3809 if (bufptr >= *bufend)
3810 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3811 *bufptr++ = setcount + (delta << 4);
3812 delta = 0;
3813 ++c;
3814 }
3815 else
3816 {
3817 int set;
3818
3819 if (*bufend - bufptr < 3)
3820 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3);
3821 *bufptr++ = setcount + (8 << 4);
3822 if (delta < -0x8000)
3823 {
3824 set = -0x8000;
3825 delta += 0x8000;
3826 }
3827 else if (delta > 0x7fff)
3828 {
3829 set = 0x7fff;
3830 delta -= 0x7fff;
3831 }
3832 else
3833 {
3834 set = delta;
3835 delta = 0;
3836 }
3837 *bufptr++ = set >> 8;
3838 *bufptr++ = set & 0xffff;
3839 c += 3;
3840 }
3841 }
3842
3843 /* Finish adjusting the count. */
3844 while (count > 0)
3845 {
3846 if (bufptr >= *bufend)
3847 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3848 /* 1 is added to each count read. */
3849 --count;
3850 if (count > 0x0f)
3851 {
3852 *bufptr++ = 0x0f;
3853 count -= 0x0f;
3854 }
3855 else
3856 {
3857 *bufptr++ = count;
3858 count = 0;
3859 }
3860 ++c;
3861 }
3862
3863 ++iline;
3864 last = l;
3865 }
3866
3867 if (proc != (proc_t *) NULL)
3868 proc->pdr.lnHigh = last->lineno;
3869 if (file != (efdr_t *) NULL)
3870 {
3871 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3872 file->fdr.cline = totcount;
3873 }
3874
3875 if (linecntptr != (long *) NULL)
3876 *linecntptr += totcount;
3877
3878 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr);
3879
3880 return c;
3881 }
3882
3883 /* Build and swap out the symbols. */
3884
3885 static unsigned long
3886 ecoff_build_symbols (const struct ecoff_debug_swap *backend,
3887 char **buf,
3888 char **bufend,
3889 unsigned long offset)
3890 {
3891 const bfd_size_type external_sym_size = backend->external_sym_size;
3892 void (* const swap_sym_out) (bfd *, const SYMR *, PTR)
3893 = backend->swap_sym_out;
3894 char *sym_out;
3895 long isym;
3896 vlinks_t *file_link;
3897
3898 sym_out = *buf + offset;
3899
3900 isym = 0;
3901
3902 /* The symbols are stored by file. */
3903 for (file_link = file_desc.first;
3904 file_link != (vlinks_t *) NULL;
3905 file_link = file_link->next)
3906 {
3907 int ifilesym;
3908 int fil_cnt;
3909 efdr_t *fil_ptr;
3910 efdr_t *fil_end;
3911
3912 if (file_link->next == (vlinks_t *) NULL)
3913 fil_cnt = file_desc.objects_last_page;
3914 else
3915 fil_cnt = file_desc.objects_per_page;
3916 fil_ptr = file_link->datum->file;
3917 fil_end = fil_ptr + fil_cnt;
3918 for (; fil_ptr < fil_end; fil_ptr++)
3919 {
3920 vlinks_t *sym_link;
3921
3922 fil_ptr->fdr.isymBase = isym;
3923 ifilesym = isym;
3924 for (sym_link = fil_ptr->symbols.first;
3925 sym_link != (vlinks_t *) NULL;
3926 sym_link = sym_link->next)
3927 {
3928 int sym_cnt;
3929 localsym_t *sym_ptr;
3930 localsym_t *sym_end;
3931
3932 if (sym_link->next == (vlinks_t *) NULL)
3933 sym_cnt = fil_ptr->symbols.objects_last_page;
3934 else
3935 sym_cnt = fil_ptr->symbols.objects_per_page;
3936 sym_ptr = sym_link->datum->sym;
3937 sym_end = sym_ptr + sym_cnt;
3938 for (; sym_ptr < sym_end; sym_ptr++)
3939 {
3940 int local;
3941 symbolS *as_sym;
3942 forward_t *f;
3943
3944 know (sym_ptr->file_ptr == fil_ptr);
3945
3946 /* If there is no associated gas symbol, then this
3947 is a pure debugging symbol. We have already
3948 added the name (if any) to fil_ptr->strings.
3949 Otherwise we must decide whether this is an
3950 external or a local symbol (actually, it may be
3951 both if the local provides additional debugging
3952 information for the external). */
3953 local = 1;
3954 as_sym = sym_ptr->as_sym;
3955 if (as_sym != (symbolS *) NULL)
3956 {
3957 symint_t indx;
3958
3959 /* The value of a block start symbol is the
3960 offset from the start of the procedure. For
3961 other symbols we just use the gas value (but
3962 we must offset it by the vma of the section,
3963 just as BFD does, because BFD will not see
3964 this value). */
3965 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block
3966 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text)
3967 {
3968 symbolS *begin_sym;
3969
3970 know (sym_ptr->proc_ptr != (proc_t *) NULL);
3971 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
3972 if (S_GET_SEGMENT (as_sym)
3973 != S_GET_SEGMENT (begin_sym))
3974 as_warn (_(".begin/.bend in different segments"));
3975 sym_ptr->ecoff_sym.asym.value =
3976 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
3977 }
3978 else
3979 sym_ptr->ecoff_sym.asym.value =
3980 (S_GET_VALUE (as_sym)
3981 + bfd_get_section_vma (stdoutput,
3982 S_GET_SEGMENT (as_sym))
3983 + sym_ptr->addend);
3984
3985 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym);
3986
3987 /* Set st_Proc to st_StaticProc for local
3988 functions. */
3989 if (sym_ptr->ecoff_sym.asym.st == st_Proc
3990 && S_IS_DEFINED (as_sym)
3991 && ! S_IS_EXTERNAL (as_sym)
3992 && ! S_IS_WEAK (as_sym))
3993 sym_ptr->ecoff_sym.asym.st = st_StaticProc;
3994
3995 /* Get the type and storage class based on where
3996 the symbol actually wound up. Traditionally,
3997 N_LBRAC and N_RBRAC are *not* relocated. */
3998 indx = sym_ptr->ecoff_sym.asym.index;
3999 if (sym_ptr->ecoff_sym.asym.st == st_Nil
4000 && sym_ptr->ecoff_sym.asym.sc == sc_Nil
4001 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4002 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC)
4003 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC))))
4004 {
4005 segT seg;
4006 const char *segname;
4007 st_t st;
4008 sc_t sc;
4009
4010 seg = S_GET_SEGMENT (as_sym);
4011 segname = segment_name (seg);
4012
4013 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4014 && (S_IS_EXTERNAL (as_sym)
4015 || S_IS_WEAK (as_sym)
4016 || ! S_IS_DEFINED (as_sym)))
4017 {
4018 if ((symbol_get_bfdsym (as_sym)->flags
4019 & BSF_FUNCTION) != 0)
4020 st = st_Proc;
4021 else
4022 st = st_Global;
4023 }
4024 else if (seg == text_section)
4025 st = st_Label;
4026 else
4027 st = st_Static;
4028
4029 if (! S_IS_DEFINED (as_sym))
4030 {
4031 valueT s;
4032
4033 s = symbol_get_obj (as_sym)->ecoff_extern_size;
4034 if (s == 0
4035 || s > bfd_get_gp_size (stdoutput))
4036 sc = sc_Undefined;
4037 else
4038 {
4039 sc = sc_SUndefined;
4040 sym_ptr->ecoff_sym.asym.value = s;
4041 }
4042 #ifdef S_SET_SIZE
4043 S_SET_SIZE (as_sym, s);
4044 #endif
4045 }
4046 else if (S_IS_COMMON (as_sym))
4047 {
4048 if (S_GET_VALUE (as_sym) > 0
4049 && (S_GET_VALUE (as_sym)
4050 <= bfd_get_gp_size (stdoutput)))
4051 sc = sc_SCommon;
4052 else
4053 sc = sc_Common;
4054 }
4055 else if (seg == text_section)
4056 sc = sc_Text;
4057 else if (seg == data_section)
4058 sc = sc_Data;
4059 else if (strcmp (segname, ".rdata") == 0
4060 || strcmp (segname, ".rodata") == 0)
4061 sc = sc_RData;
4062 else if (strcmp (segname, ".sdata") == 0)
4063 sc = sc_SData;
4064 else if (seg == bss_section)
4065 sc = sc_Bss;
4066 else if (strcmp (segname, ".sbss") == 0)
4067 sc = sc_SBss;
4068 else if (seg == &bfd_abs_section)
4069 sc = sc_Abs;
4070 else
4071 {
4072 /* This must be a user named section.
4073 This is not possible in ECOFF, but it
4074 is in ELF. */
4075 sc = sc_Data;
4076 }
4077
4078 sym_ptr->ecoff_sym.asym.st = (int) st;
4079 sym_ptr->ecoff_sym.asym.sc = (int) sc;
4080 }
4081
4082 /* This is just an external symbol if it is
4083 outside a procedure and it has a type.
4084 FIXME: g++ will generate symbols which have
4085 different names in the debugging information
4086 than the actual symbol. Should we handle
4087 them here? */
4088 if ((S_IS_EXTERNAL (as_sym)
4089 || S_IS_WEAK (as_sym)
4090 || ! S_IS_DEFINED (as_sym))
4091 && sym_ptr->proc_ptr == (proc_t *) NULL
4092 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil
4093 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym))
4094 local = 0;
4095
4096 /* This is just an external symbol if it is a
4097 common symbol. */
4098 if (S_IS_COMMON (as_sym))
4099 local = 0;
4100
4101 /* If an st_end symbol has an associated gas
4102 symbol, then it is a local label created for
4103 a .bend or .end directive. Stabs line
4104 numbers will have \001 in the names. */
4105 if (local
4106 && sym_ptr->ecoff_sym.asym.st != st_End
4107 && strchr (sym_ptr->name, '\001') == 0)
4108 sym_ptr->ecoff_sym.asym.iss =
4109 add_string (&fil_ptr->strings,
4110 fil_ptr->str_hash,
4111 sym_ptr->name,
4112 (shash_t **) NULL);
4113 }
4114
4115 /* We now know the index of this symbol; fill in
4116 locations that have been waiting for that
4117 information. */
4118 if (sym_ptr->begin_ptr != (localsym_t *) NULL)
4119 {
4120 localsym_t *begin_ptr;
4121 st_t begin_type;
4122
4123 know (local);
4124 begin_ptr = sym_ptr->begin_ptr;
4125 know (begin_ptr->sym_index != -1);
4126 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index;
4127 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4128 sym_ptr->ecoff_sym.asym.iss =
4129 begin_ptr->ecoff_sym.asym.iss;
4130
4131 begin_type = begin_ptr->ecoff_sym.asym.st;
4132 if (begin_type == st_File
4133 || begin_type == st_Block)
4134 {
4135 begin_ptr->ecoff_sym.asym.index =
4136 isym - ifilesym + 1;
4137 (*swap_sym_out) (stdoutput,
4138 &begin_ptr->ecoff_sym.asym,
4139 (*buf
4140 + offset
4141 + (begin_ptr->sym_index
4142 * external_sym_size)));
4143 }
4144 else
4145 {
4146 know (begin_ptr->index_ptr != (aux_t *) NULL);
4147 begin_ptr->index_ptr->data.isym =
4148 isym - ifilesym + 1;
4149 }
4150
4151 /* The value of the symbol marking the end of a
4152 procedure is the size of the procedure. The
4153 value of the symbol marking the end of a
4154 block is the offset from the start of the
4155 procedure to the block. */
4156 if (begin_type == st_Proc
4157 || begin_type == st_StaticProc)
4158 {
4159 know (as_sym != (symbolS *) NULL);
4160 know (begin_ptr->as_sym != (symbolS *) NULL);
4161 if (S_GET_SEGMENT (as_sym)
4162 != S_GET_SEGMENT (begin_ptr->as_sym))
4163 as_warn (_(".begin/.bend in different segments"));
4164 sym_ptr->ecoff_sym.asym.value =
4165 (S_GET_VALUE (as_sym)
4166 - S_GET_VALUE (begin_ptr->as_sym));
4167
4168 /* If the size is odd, this is probably a
4169 mips16 function; force it to be even. */
4170 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0)
4171 ++sym_ptr->ecoff_sym.asym.value;
4172
4173 #ifdef S_SET_SIZE
4174 S_SET_SIZE (begin_ptr->as_sym,
4175 sym_ptr->ecoff_sym.asym.value);
4176 #endif
4177 }
4178 else if (begin_type == st_Block
4179 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4180 {
4181 symbolS *begin_sym;
4182
4183 know (as_sym != (symbolS *) NULL);
4184 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4185 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4186 if (S_GET_SEGMENT (as_sym)
4187 != S_GET_SEGMENT (begin_sym))
4188 as_warn (_(".begin/.bend in different segments"));
4189 sym_ptr->ecoff_sym.asym.value =
4190 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4191 }
4192 }
4193
4194 for (f = sym_ptr->forward_ref;
4195 f != (forward_t *) NULL;
4196 f = f->next)
4197 {
4198 know (local);
4199 f->ifd_ptr->data.isym = fil_ptr->file_index;
4200 f->index_ptr->data.rndx.index = isym - ifilesym;
4201 }
4202
4203 if (local)
4204 {
4205 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size)
4206 sym_out = ecoff_add_bytes (buf, bufend,
4207 sym_out,
4208 external_sym_size);
4209 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym,
4210 sym_out);
4211 sym_out += external_sym_size;
4212
4213 sym_ptr->sym_index = isym;
4214
4215 if (sym_ptr->proc_ptr != (proc_t *) NULL
4216 && sym_ptr->proc_ptr->sym == sym_ptr)
4217 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym;
4218
4219 ++isym;
4220 }
4221
4222 /* Record the local symbol index and file number in
4223 case this is an external symbol. Note that this
4224 destroys the asym.index field. */
4225 if (as_sym != (symbolS *) NULL
4226 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr)
4227 {
4228 if ((sym_ptr->ecoff_sym.asym.st == st_Proc
4229 || sym_ptr->ecoff_sym.asym.st == st_StaticProc)
4230 && local)
4231 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1;
4232 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index;
4233
4234 /* Don't try to merge an FDR which has an
4235 external symbol attached to it. */
4236 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym))
4237 fil_ptr->fdr.fMerge = 0;
4238 }
4239 }
4240 }
4241 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase;
4242 }
4243 }
4244
4245 return offset + isym * external_sym_size;
4246 }
4247
4248 /* Swap out the procedure information. */
4249
4250 static unsigned long
4251 ecoff_build_procs (const struct ecoff_debug_swap *backend,
4252 char **buf,
4253 char **bufend,
4254 unsigned long offset)
4255 {
4256 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4257 void (* const swap_pdr_out) (bfd *, const PDR *, PTR)
4258 = backend->swap_pdr_out;
4259 char *pdr_out;
4260 long iproc;
4261 vlinks_t *file_link;
4262
4263 pdr_out = *buf + offset;
4264
4265 iproc = 0;
4266
4267 /* The procedures are stored by file. */
4268 for (file_link = file_desc.first;
4269 file_link != (vlinks_t *) NULL;
4270 file_link = file_link->next)
4271 {
4272 int fil_cnt;
4273 efdr_t *fil_ptr;
4274 efdr_t *fil_end;
4275
4276 if (file_link->next == (vlinks_t *) NULL)
4277 fil_cnt = file_desc.objects_last_page;
4278 else
4279 fil_cnt = file_desc.objects_per_page;
4280 fil_ptr = file_link->datum->file;
4281 fil_end = fil_ptr + fil_cnt;
4282 for (; fil_ptr < fil_end; fil_ptr++)
4283 {
4284 vlinks_t *proc_link;
4285 int first;
4286
4287 fil_ptr->fdr.ipdFirst = iproc;
4288 first = 1;
4289 for (proc_link = fil_ptr->procs.first;
4290 proc_link != (vlinks_t *) NULL;
4291 proc_link = proc_link->next)
4292 {
4293 int prc_cnt;
4294 proc_t *proc_ptr;
4295 proc_t *proc_end;
4296
4297 if (proc_link->next == (vlinks_t *) NULL)
4298 prc_cnt = fil_ptr->procs.objects_last_page;
4299 else
4300 prc_cnt = fil_ptr->procs.objects_per_page;
4301 proc_ptr = proc_link->datum->proc;
4302 proc_end = proc_ptr + prc_cnt;
4303 for (; proc_ptr < proc_end; proc_ptr++)
4304 {
4305 symbolS *adr_sym;
4306 unsigned long adr;
4307
4308 adr_sym = proc_ptr->sym->as_sym;
4309 adr = (S_GET_VALUE (adr_sym)
4310 + bfd_get_section_vma (stdoutput,
4311 S_GET_SEGMENT (adr_sym)));
4312 if (first)
4313 {
4314 /* This code used to force the adr of the very
4315 first fdr to be 0. However, the native tools
4316 don't do that, and I can't remember why it
4317 used to work that way, so I took it out. */
4318 fil_ptr->fdr.adr = adr;
4319 first = 0;
4320 }
4321 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr;
4322 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size)
4323 pdr_out = ecoff_add_bytes (buf, bufend,
4324 pdr_out,
4325 external_pdr_size);
4326 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out);
4327 pdr_out += external_pdr_size;
4328 ++iproc;
4329 }
4330 }
4331 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst;
4332 }
4333 }
4334
4335 return offset + iproc * external_pdr_size;
4336 }
4337
4338 /* Swap out the aux information. */
4339
4340 static unsigned long
4341 ecoff_build_aux (const struct ecoff_debug_swap *backend,
4342 char **buf,
4343 char **bufend,
4344 unsigned long offset)
4345 {
4346 int bigendian;
4347 union aux_ext *aux_out;
4348 long iaux;
4349 vlinks_t *file_link;
4350
4351 bigendian = bfd_big_endian (stdoutput);
4352
4353 aux_out = (union aux_ext *) (*buf + offset);
4354
4355 iaux = 0;
4356
4357 /* The aux entries are stored by file. */
4358 for (file_link = file_desc.first;
4359 file_link != (vlinks_t *) NULL;
4360 file_link = file_link->next)
4361 {
4362 int fil_cnt;
4363 efdr_t *fil_ptr;
4364 efdr_t *fil_end;
4365
4366 if (file_link->next == (vlinks_t *) NULL)
4367 fil_cnt = file_desc.objects_last_page;
4368 else
4369 fil_cnt = file_desc.objects_per_page;
4370 fil_ptr = file_link->datum->file;
4371 fil_end = fil_ptr + fil_cnt;
4372 for (; fil_ptr < fil_end; fil_ptr++)
4373 {
4374 vlinks_t *aux_link;
4375
4376 fil_ptr->fdr.fBigendian = bigendian;
4377 fil_ptr->fdr.iauxBase = iaux;
4378 for (aux_link = fil_ptr->aux_syms.first;
4379 aux_link != (vlinks_t *) NULL;
4380 aux_link = aux_link->next)
4381 {
4382 int aux_cnt;
4383 aux_t *aux_ptr;
4384 aux_t *aux_end;
4385
4386 if (aux_link->next == (vlinks_t *) NULL)
4387 aux_cnt = fil_ptr->aux_syms.objects_last_page;
4388 else
4389 aux_cnt = fil_ptr->aux_syms.objects_per_page;
4390 aux_ptr = aux_link->datum->aux;
4391 aux_end = aux_ptr + aux_cnt;
4392 for (; aux_ptr < aux_end; aux_ptr++)
4393 {
4394 if ((unsigned long) (*bufend - (char *) aux_out)
4395 < sizeof (union aux_ext))
4396 aux_out = ((union aux_ext *)
4397 ecoff_add_bytes (buf, bufend,
4398 (char *) aux_out,
4399 sizeof (union aux_ext)));
4400 switch (aux_ptr->type)
4401 {
4402 case aux_tir:
4403 (*backend->swap_tir_out) (bigendian,
4404 &aux_ptr->data.ti,
4405 &aux_out->a_ti);
4406 break;
4407 case aux_rndx:
4408 (*backend->swap_rndx_out) (bigendian,
4409 &aux_ptr->data.rndx,
4410 &aux_out->a_rndx);
4411 break;
4412 case aux_dnLow:
4413 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow,
4414 aux_out);
4415 break;
4416 case aux_dnHigh:
4417 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh,
4418 aux_out);
4419 break;
4420 case aux_isym:
4421 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym,
4422 aux_out);
4423 break;
4424 case aux_iss:
4425 AUX_PUT_ISS (bigendian, aux_ptr->data.iss,
4426 aux_out);
4427 break;
4428 case aux_width:
4429 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width,
4430 aux_out);
4431 break;
4432 case aux_count:
4433 AUX_PUT_COUNT (bigendian, aux_ptr->data.count,
4434 aux_out);
4435 break;
4436 }
4437
4438 ++aux_out;
4439 ++iaux;
4440 }
4441 }
4442 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase;
4443 }
4444 }
4445
4446 return ecoff_padding_adjust (backend, buf, bufend,
4447 offset + iaux * sizeof (union aux_ext),
4448 (char **) NULL);
4449 }
4450
4451 /* Copy out the strings from a varray_t. This returns the number of
4452 bytes copied, rather than the new offset. */
4453
4454 static unsigned long
4455 ecoff_build_strings (char **buf,
4456 char **bufend,
4457 unsigned long offset,
4458 varray_t *vp)
4459 {
4460 unsigned long istr;
4461 char *str_out;
4462 vlinks_t *str_link;
4463
4464 str_out = *buf + offset;
4465
4466 istr = 0;
4467
4468 for (str_link = vp->first;
4469 str_link != (vlinks_t *) NULL;
4470 str_link = str_link->next)
4471 {
4472 unsigned long str_cnt;
4473
4474 if (str_link->next == (vlinks_t *) NULL)
4475 str_cnt = vp->objects_last_page;
4476 else
4477 str_cnt = vp->objects_per_page;
4478
4479 if ((unsigned long)(*bufend - str_out) < str_cnt)
4480 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt);
4481
4482 memcpy (str_out, str_link->datum->byte, str_cnt);
4483 str_out += str_cnt;
4484 istr += str_cnt;
4485 }
4486
4487 return istr;
4488 }
4489
4490 /* Dump out the local strings. */
4491
4492 static unsigned long
4493 ecoff_build_ss (const struct ecoff_debug_swap *backend,
4494 char **buf,
4495 char **bufend,
4496 unsigned long offset)
4497 {
4498 long iss;
4499 vlinks_t *file_link;
4500
4501 iss = 0;
4502
4503 for (file_link = file_desc.first;
4504 file_link != (vlinks_t *) NULL;
4505 file_link = file_link->next)
4506 {
4507 int fil_cnt;
4508 efdr_t *fil_ptr;
4509 efdr_t *fil_end;
4510
4511 if (file_link->next == (vlinks_t *) NULL)
4512 fil_cnt = file_desc.objects_last_page;
4513 else
4514 fil_cnt = file_desc.objects_per_page;
4515 fil_ptr = file_link->datum->file;
4516 fil_end = fil_ptr + fil_cnt;
4517 for (; fil_ptr < fil_end; fil_ptr++)
4518 {
4519 long ss_cnt;
4520
4521 fil_ptr->fdr.issBase = iss;
4522 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss,
4523 &fil_ptr->strings);
4524 fil_ptr->fdr.cbSs = ss_cnt;
4525 iss += ss_cnt;
4526 }
4527 }
4528
4529 return ecoff_padding_adjust (backend, buf, bufend, offset + iss,
4530 (char **) NULL);
4531 }
4532
4533 /* Swap out the file descriptors. */
4534
4535 static unsigned long
4536 ecoff_build_fdr (const struct ecoff_debug_swap *backend,
4537 char **buf,
4538 char **bufend,
4539 unsigned long offset)
4540 {
4541 const bfd_size_type external_fdr_size = backend->external_fdr_size;
4542 void (* const swap_fdr_out) (bfd *, const FDR *, PTR)
4543 = backend->swap_fdr_out;
4544 long ifile;
4545 char *fdr_out;
4546 vlinks_t *file_link;
4547
4548 ifile = 0;
4549
4550 fdr_out = *buf + offset;
4551
4552 for (file_link = file_desc.first;
4553 file_link != (vlinks_t *) NULL;
4554 file_link = file_link->next)
4555 {
4556 int fil_cnt;
4557 efdr_t *fil_ptr;
4558 efdr_t *fil_end;
4559
4560 if (file_link->next == (vlinks_t *) NULL)
4561 fil_cnt = file_desc.objects_last_page;
4562 else
4563 fil_cnt = file_desc.objects_per_page;
4564 fil_ptr = file_link->datum->file;
4565 fil_end = fil_ptr + fil_cnt;
4566 for (; fil_ptr < fil_end; fil_ptr++)
4567 {
4568 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size)
4569 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out,
4570 external_fdr_size);
4571 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out);
4572 fdr_out += external_fdr_size;
4573 ++ifile;
4574 }
4575 }
4576
4577 return offset + ifile * external_fdr_size;
4578 }
4579
4580 /* Set up the external symbols. These are supposed to be handled by
4581 the backend. This routine just gets the right information and
4582 calls a backend function to deal with it. */
4583
4584 static void
4585 ecoff_setup_ext (void)
4586 {
4587 register symbolS *sym;
4588
4589 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4590 {
4591 if (symbol_get_obj (sym)->ecoff_symbol == NULL)
4592 continue;
4593
4594 /* If this is a local symbol, then force the fields to zero. */
4595 if (! S_IS_EXTERNAL (sym)
4596 && ! S_IS_WEAK (sym)
4597 && S_IS_DEFINED (sym))
4598 {
4599 struct localsym *lsym;
4600
4601 lsym = symbol_get_obj (sym)->ecoff_symbol;
4602 lsym->ecoff_sym.asym.value = 0;
4603 lsym->ecoff_sym.asym.st = (int) st_Nil;
4604 lsym->ecoff_sym.asym.sc = (int) sc_Nil;
4605 lsym->ecoff_sym.asym.index = indexNil;
4606 }
4607
4608 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym);
4609 }
4610 }
4611
4612 /* Build the ECOFF debugging information. */
4613
4614 unsigned long
4615 ecoff_build_debug (HDRR *hdr,
4616 char **bufp,
4617 const struct ecoff_debug_swap *backend)
4618 {
4619 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4620 tag_t *ptag;
4621 tag_t *ptag_next;
4622 efdr_t *fil_ptr;
4623 int end_warning;
4624 efdr_t *hold_file_ptr;
4625 proc_t *hold_proc_ptr;
4626 symbolS *sym;
4627 char *buf;
4628 char *bufend;
4629 unsigned long offset;
4630
4631 /* Make sure we have a file. */
4632 if (first_file == (efdr_t *) NULL)
4633 add_file ((const char *) NULL, 0, 1);
4634
4635 /* Handle any top level tags. */
4636 for (ptag = top_tag_head->first_tag;
4637 ptag != (tag_t *) NULL;
4638 ptag = ptag_next)
4639 {
4640 if (ptag->forward_ref != (forward_t *) NULL)
4641 add_unknown_tag (ptag);
4642
4643 ptag_next = ptag->same_block;
4644 ptag->hash_ptr->tag_ptr = ptag->same_name;
4645 free_tag (ptag);
4646 }
4647
4648 free_thead (top_tag_head);
4649
4650 /* Look through the symbols. Add debugging information for each
4651 symbol that has not already received it. */
4652 hold_file_ptr = cur_file_ptr;
4653 hold_proc_ptr = cur_proc_ptr;
4654 cur_proc_ptr = (proc_t *) NULL;
4655 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4656 {
4657 if (symbol_get_obj (sym)->ecoff_symbol != NULL
4658 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL
4659 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0)
4660 continue;
4661
4662 cur_file_ptr = symbol_get_obj (sym)->ecoff_file;
4663 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym,
4664 (bfd_vma) 0, S_GET_VALUE (sym), indexNil);
4665 }
4666 cur_proc_ptr = hold_proc_ptr;
4667 cur_file_ptr = hold_file_ptr;
4668
4669 /* Output an ending symbol for all the files. We have to do this
4670 here for the last file, so we may as well do it for all of the
4671 files. */
4672 end_warning = 0;
4673 for (fil_ptr = first_file;
4674 fil_ptr != (efdr_t *) NULL;
4675 fil_ptr = fil_ptr->next_file)
4676 {
4677 cur_file_ptr = fil_ptr;
4678 while (cur_file_ptr->cur_scope != (scope_t *) NULL
4679 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL)
4680 {
4681 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev;
4682 if (! end_warning && ! cur_file_ptr->fake)
4683 {
4684 as_warn (_("missing .end or .bend at end of file"));
4685 end_warning = 1;
4686 }
4687 }
4688 if (cur_file_ptr->cur_scope != (scope_t *) NULL)
4689 (void) add_ecoff_symbol ((const char *) NULL,
4690 st_End, sc_Text,
4691 (symbolS *) NULL,
4692 (bfd_vma) 0,
4693 (symint_t) 0,
4694 (symint_t) 0);
4695 }
4696
4697 /* Build the symbolic information. */
4698 offset = 0;
4699 buf = xmalloc (PAGE_SIZE);
4700 bufend = buf + PAGE_SIZE;
4701
4702 /* Build the line number information. */
4703 hdr->cbLineOffset = offset;
4704 offset = ecoff_build_lineno (backend, &buf, &bufend, offset,
4705 &hdr->ilineMax);
4706 hdr->cbLine = offset - hdr->cbLineOffset;
4707
4708 /* We don't use dense numbers at all. */
4709 hdr->idnMax = 0;
4710 hdr->cbDnOffset = 0;
4711
4712 /* We can't build the PDR table until we have built the symbols,
4713 because a PDR contains a symbol index. However, we set aside
4714 space at this point. */
4715 hdr->ipdMax = proc_cnt;
4716 hdr->cbPdOffset = offset;
4717 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size)
4718 (void) ecoff_add_bytes (&buf, &bufend, buf + offset,
4719 proc_cnt * external_pdr_size);
4720 offset += proc_cnt * external_pdr_size;
4721
4722 /* Build the local symbols. */
4723 hdr->cbSymOffset = offset;
4724 offset = ecoff_build_symbols (backend, &buf, &bufend, offset);
4725 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size;
4726
4727 /* Building the symbols initializes the symbol index in the PDR's.
4728 Now we can swap out the PDR's. */
4729 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset);
4730
4731 /* We don't use optimization symbols. */
4732 hdr->ioptMax = 0;
4733 hdr->cbOptOffset = 0;
4734
4735 /* Swap out the auxiliary type information. */
4736 hdr->cbAuxOffset = offset;
4737 offset = ecoff_build_aux (backend, &buf, &bufend, offset);
4738 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext);
4739
4740 /* Copy out the local strings. */
4741 hdr->cbSsOffset = offset;
4742 offset = ecoff_build_ss (backend, &buf, &bufend, offset);
4743 hdr->issMax = offset - hdr->cbSsOffset;
4744
4745 /* We don't use relative file descriptors. */
4746 hdr->crfd = 0;
4747 hdr->cbRfdOffset = 0;
4748
4749 /* Swap out the file descriptors. */
4750 hdr->cbFdOffset = offset;
4751 offset = ecoff_build_fdr (backend, &buf, &bufend, offset);
4752 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size;
4753
4754 /* Set up the external symbols, which are handled by the BFD back
4755 end. */
4756 hdr->issExtMax = 0;
4757 hdr->cbSsExtOffset = 0;
4758 hdr->iextMax = 0;
4759 hdr->cbExtOffset = 0;
4760 ecoff_setup_ext ();
4761
4762 know ((offset & (backend->debug_align - 1)) == 0);
4763
4764 /* FIXME: This value should be determined from the .verstamp directive,
4765 with reasonable defaults in config files. */
4766 #ifdef TC_ALPHA
4767 hdr->vstamp = 0x030b;
4768 #else
4769 hdr->vstamp = 0x020b;
4770 #endif
4771
4772 *bufp = buf;
4773 return offset;
4774 }
4775 \f
4776 /* Allocate a cluster of pages. */
4777
4778 #ifndef MALLOC_CHECK
4779
4780 static page_type *
4781 allocate_cluster (unsigned long npages)
4782 {
4783 register page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE);
4784
4785 #ifdef ECOFF_DEBUG
4786 if (debug > 3)
4787 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value);
4788 #endif
4789
4790 memset (value, 0, npages * PAGE_USIZE);
4791
4792 return value;
4793 }
4794
4795 static page_type *cluster_ptr = NULL;
4796 static unsigned long pages_left = 0;
4797
4798 #endif /* MALLOC_CHECK */
4799
4800 /* Allocate one page (which is initialized to 0). */
4801
4802 static page_type *
4803 allocate_page (void)
4804 {
4805 #ifndef MALLOC_CHECK
4806
4807 if (pages_left == 0)
4808 {
4809 pages_left = MAX_CLUSTER_PAGES;
4810 cluster_ptr = allocate_cluster (pages_left);
4811 }
4812
4813 pages_left--;
4814 return cluster_ptr++;
4815
4816 #else /* MALLOC_CHECK */
4817
4818 page_type *ptr;
4819
4820 ptr = xmalloc (PAGE_USIZE);
4821 memset (ptr, 0, PAGE_USIZE);
4822 return ptr;
4823
4824 #endif /* MALLOC_CHECK */
4825 }
4826 \f
4827 /* Allocate scoping information. */
4828
4829 static scope_t *
4830 allocate_scope (void)
4831 {
4832 register scope_t *ptr;
4833 static scope_t initial_scope;
4834
4835 #ifndef MALLOC_CHECK
4836
4837 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4838 if (ptr != (scope_t *) NULL)
4839 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free;
4840 else
4841 {
4842 register int unallocated = alloc_counts[(int) alloc_type_scope].unallocated;
4843 register page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page;
4844
4845 if (unallocated == 0)
4846 {
4847 unallocated = PAGE_SIZE / sizeof (scope_t);
4848 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page ();
4849 alloc_counts[(int) alloc_type_scope].total_pages++;
4850 }
4851
4852 ptr = &cur_page->scope[--unallocated];
4853 alloc_counts[(int) alloc_type_scope].unallocated = unallocated;
4854 }
4855
4856 #else
4857
4858 ptr = (scope_t *) xmalloc (sizeof (scope_t));
4859
4860 #endif
4861
4862 alloc_counts[(int) alloc_type_scope].total_alloc++;
4863 *ptr = initial_scope;
4864 return ptr;
4865 }
4866
4867 /* Free scoping information. */
4868
4869 static void
4870 free_scope (scope_t *ptr)
4871 {
4872 alloc_counts[(int) alloc_type_scope].total_free++;
4873
4874 #ifndef MALLOC_CHECK
4875 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4876 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr;
4877 #else
4878 free ((PTR) ptr);
4879 #endif
4880 }
4881 \f
4882 /* Allocate links for pages in a virtual array. */
4883
4884 static vlinks_t *
4885 allocate_vlinks (void)
4886 {
4887 register vlinks_t *ptr;
4888 static vlinks_t initial_vlinks;
4889
4890 #ifndef MALLOC_CHECK
4891
4892 register int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated;
4893 register page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page;
4894
4895 if (unallocated == 0)
4896 {
4897 unallocated = PAGE_SIZE / sizeof (vlinks_t);
4898 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page ();
4899 alloc_counts[(int) alloc_type_vlinks].total_pages++;
4900 }
4901
4902 ptr = &cur_page->vlinks[--unallocated];
4903 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated;
4904
4905 #else
4906
4907 ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t));
4908
4909 #endif
4910
4911 alloc_counts[(int) alloc_type_vlinks].total_alloc++;
4912 *ptr = initial_vlinks;
4913 return ptr;
4914 }
4915 \f
4916 /* Allocate string hash buckets. */
4917
4918 static shash_t *
4919 allocate_shash (void)
4920 {
4921 register shash_t *ptr;
4922 static shash_t initial_shash;
4923
4924 #ifndef MALLOC_CHECK
4925
4926 register int unallocated = alloc_counts[(int) alloc_type_shash].unallocated;
4927 register page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page;
4928
4929 if (unallocated == 0)
4930 {
4931 unallocated = PAGE_SIZE / sizeof (shash_t);
4932 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page ();
4933 alloc_counts[(int) alloc_type_shash].total_pages++;
4934 }
4935
4936 ptr = &cur_page->shash[--unallocated];
4937 alloc_counts[(int) alloc_type_shash].unallocated = unallocated;
4938
4939 #else
4940
4941 ptr = (shash_t *) xmalloc (sizeof (shash_t));
4942
4943 #endif
4944
4945 alloc_counts[(int) alloc_type_shash].total_alloc++;
4946 *ptr = initial_shash;
4947 return ptr;
4948 }
4949 \f
4950 /* Allocate type hash buckets. */
4951
4952 static thash_t *
4953 allocate_thash (void)
4954 {
4955 register thash_t *ptr;
4956 static thash_t initial_thash;
4957
4958 #ifndef MALLOC_CHECK
4959
4960 register int unallocated = alloc_counts[(int) alloc_type_thash].unallocated;
4961 register page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page;
4962
4963 if (unallocated == 0)
4964 {
4965 unallocated = PAGE_SIZE / sizeof (thash_t);
4966 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page ();
4967 alloc_counts[(int) alloc_type_thash].total_pages++;
4968 }
4969
4970 ptr = &cur_page->thash[--unallocated];
4971 alloc_counts[(int) alloc_type_thash].unallocated = unallocated;
4972
4973 #else
4974
4975 ptr = (thash_t *) xmalloc (sizeof (thash_t));
4976
4977 #endif
4978
4979 alloc_counts[(int) alloc_type_thash].total_alloc++;
4980 *ptr = initial_thash;
4981 return ptr;
4982 }
4983 \f
4984 /* Allocate structure, union, or enum tag information. */
4985
4986 static tag_t *
4987 allocate_tag (void)
4988 {
4989 register tag_t *ptr;
4990 static tag_t initial_tag;
4991
4992 #ifndef MALLOC_CHECK
4993
4994 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
4995 if (ptr != (tag_t *) NULL)
4996 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free;
4997 else
4998 {
4999 register int unallocated = alloc_counts[(int) alloc_type_tag].unallocated;
5000 register page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page;
5001
5002 if (unallocated == 0)
5003 {
5004 unallocated = PAGE_SIZE / sizeof (tag_t);
5005 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page ();
5006 alloc_counts[(int) alloc_type_tag].total_pages++;
5007 }
5008
5009 ptr = &cur_page->tag[--unallocated];
5010 alloc_counts[(int) alloc_type_tag].unallocated = unallocated;
5011 }
5012
5013 #else
5014
5015 ptr = (tag_t *) xmalloc (sizeof (tag_t));
5016
5017 #endif
5018
5019 alloc_counts[(int) alloc_type_tag].total_alloc++;
5020 *ptr = initial_tag;
5021 return ptr;
5022 }
5023
5024 /* Free scoping information. */
5025
5026 static void
5027 free_tag (tag_t *ptr)
5028 {
5029 alloc_counts[(int) alloc_type_tag].total_free++;
5030
5031 #ifndef MALLOC_CHECK
5032 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
5033 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr;
5034 #else
5035 free ((PTR_T) ptr);
5036 #endif
5037 }
5038 \f
5039 /* Allocate forward reference to a yet unknown tag. */
5040
5041 static forward_t *
5042 allocate_forward (void)
5043 {
5044 register forward_t *ptr;
5045 static forward_t initial_forward;
5046
5047 #ifndef MALLOC_CHECK
5048
5049 register int unallocated = alloc_counts[(int) alloc_type_forward].unallocated;
5050 register page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page;
5051
5052 if (unallocated == 0)
5053 {
5054 unallocated = PAGE_SIZE / sizeof (forward_t);
5055 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page ();
5056 alloc_counts[(int) alloc_type_forward].total_pages++;
5057 }
5058
5059 ptr = &cur_page->forward[--unallocated];
5060 alloc_counts[(int) alloc_type_forward].unallocated = unallocated;
5061
5062 #else
5063
5064 ptr = (forward_t *) xmalloc (sizeof (forward_t));
5065
5066 #endif
5067
5068 alloc_counts[(int) alloc_type_forward].total_alloc++;
5069 *ptr = initial_forward;
5070 return ptr;
5071 }
5072 \f
5073 /* Allocate head of type hash list. */
5074
5075 static thead_t *
5076 allocate_thead (void)
5077 {
5078 register thead_t *ptr;
5079 static thead_t initial_thead;
5080
5081 #ifndef MALLOC_CHECK
5082
5083 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5084 if (ptr != (thead_t *) NULL)
5085 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free;
5086 else
5087 {
5088 register int unallocated = alloc_counts[(int) alloc_type_thead].unallocated;
5089 register page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page;
5090
5091 if (unallocated == 0)
5092 {
5093 unallocated = PAGE_SIZE / sizeof (thead_t);
5094 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page ();
5095 alloc_counts[(int) alloc_type_thead].total_pages++;
5096 }
5097
5098 ptr = &cur_page->thead[--unallocated];
5099 alloc_counts[(int) alloc_type_thead].unallocated = unallocated;
5100 }
5101
5102 #else
5103
5104 ptr = (thead_t *) xmalloc (sizeof (thead_t));
5105
5106 #endif
5107
5108 alloc_counts[(int) alloc_type_thead].total_alloc++;
5109 *ptr = initial_thead;
5110 return ptr;
5111 }
5112
5113 /* Free scoping information. */
5114
5115 static void
5116 free_thead (thead_t *ptr)
5117 {
5118 alloc_counts[(int) alloc_type_thead].total_free++;
5119
5120 #ifndef MALLOC_CHECK
5121 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5122 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr;
5123 #else
5124 free ((PTR_T) ptr);
5125 #endif
5126 }
5127 \f
5128 static lineno_list_t *
5129 allocate_lineno_list (void)
5130 {
5131 register lineno_list_t *ptr;
5132 static lineno_list_t initial_lineno_list;
5133
5134 #ifndef MALLOC_CHECK
5135
5136 register int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated;
5137 register page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page;
5138
5139 if (unallocated == 0)
5140 {
5141 unallocated = PAGE_SIZE / sizeof (lineno_list_t);
5142 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page ();
5143 alloc_counts[(int) alloc_type_lineno].total_pages++;
5144 }
5145
5146 ptr = &cur_page->lineno[--unallocated];
5147 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated;
5148
5149 #else
5150
5151 ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t));
5152
5153 #endif
5154
5155 alloc_counts[(int) alloc_type_lineno].total_alloc++;
5156 *ptr = initial_lineno_list;
5157 return ptr;
5158 }
5159
5160 void
5161 ecoff_set_gp_prolog_size (int sz)
5162 {
5163 if (cur_proc_ptr == 0)
5164 return;
5165
5166 cur_proc_ptr->pdr.gp_prologue = sz;
5167 if (cur_proc_ptr->pdr.gp_prologue != sz)
5168 {
5169 as_warn (_("GP prologue size exceeds field size, using 0 instead"));
5170 cur_proc_ptr->pdr.gp_prologue = 0;
5171 }
5172
5173 cur_proc_ptr->pdr.gp_used = 1;
5174 }
5175
5176 int
5177 ecoff_no_current_file (void)
5178 {
5179 return cur_file_ptr == (efdr_t *) NULL;
5180 }
5181
5182 void
5183 ecoff_generate_asm_lineno (void)
5184 {
5185 unsigned int lineno;
5186 char *filename;
5187 lineno_list_t *list;
5188
5189 as_where (&filename, &lineno);
5190
5191 if (current_stabs_filename == (char *) NULL
5192 || strcmp (current_stabs_filename, filename))
5193 add_file (filename, 0, 1);
5194
5195 list = allocate_lineno_list ();
5196
5197 list->next = (lineno_list_t *) NULL;
5198 list->file = cur_file_ptr;
5199 list->proc = cur_proc_ptr;
5200 list->frag = frag_now;
5201 list->paddr = frag_now_fix ();
5202 list->lineno = lineno;
5203
5204 /* We don't want to merge files which have line numbers. */
5205 cur_file_ptr->fdr.fMerge = 0;
5206
5207 /* A .loc directive will sometimes appear before a .ent directive,
5208 which means that cur_proc_ptr will be NULL here. Arrange to
5209 patch this up. */
5210 if (cur_proc_ptr == (proc_t *) NULL)
5211 {
5212 lineno_list_t **pl;
5213
5214 pl = &noproc_lineno;
5215 while (*pl != (lineno_list_t *) NULL)
5216 pl = &(*pl)->next;
5217 *pl = list;
5218 }
5219 else
5220 {
5221 last_lineno = list;
5222 *last_lineno_ptr = list;
5223 last_lineno_ptr = &list->next;
5224 }
5225 }
5226
5227 #else
5228
5229 void
5230 ecoff_generate_asm_lineno (void)
5231 {
5232 }
5233
5234 #endif /* ECOFF_DEBUGGING */
GDB Binutils - Deliverables
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