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