1 /* ECOFF debugging support.
2 Copyright (C) 1993-2014 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
4 This file was put together by Ian Lance Taylor <ian@cygnus.com>. A
5 good deal of it comes directly from mips-tfile.c, by Michael
6 Meissner <meissner@osf.org>.
7
8 This file is part of GAS.
9
10 GAS is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3, or (at your option)
13 any later version.
14
15 GAS is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with GAS; see the file COPYING. If not, write to the Free
22 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23 02110-1301, USA. */
24
25 #include "as.h"
26
27 /* This file is compiled conditionally for those targets which use
28 ECOFF debugging information (e.g., MIPS ELF, Alpha ECOFF). */
29
30 #include "ecoff.h"
31
32 #ifdef ECOFF_DEBUGGING
33
34 #include "coff/internal.h"
35 #include "coff/symconst.h"
36 #include "aout/stab_gnu.h"
37 #include "filenames.h"
38 #include "safe-ctype.h"
39
40 /* Why isn't this in coff/sym.h? */
41 #define ST_RFDESCAPE 0xfff
42
43 /* This file constructs the information used by the ECOFF debugging
44 format. It just builds a large block of data.
45
46 We support both ECOFF style debugging and stabs debugging (the
47 stabs symbols are encapsulated in ECOFF symbols). This should let
48 us handle anything the compiler might throw at us. */
49
50 /* Here is a brief description of the MIPS ECOFF symbol table, by
51 Michael Meissner. The MIPS symbol table has the following pieces:
52
53 Symbolic Header
54 |
55 +-- Auxiliary Symbols
56 |
57 +-- Dense number table
58 |
59 +-- Optimizer Symbols
60 |
61 +-- External Strings
62 |
63 +-- External Symbols
64 |
65 +-- Relative file descriptors
66 |
67 +-- File table
68 |
69 +-- Procedure table
70 |
71 +-- Line number table
72 |
73 +-- Local Strings
74 |
75 +-- Local Symbols
76
77 The symbolic header points to each of the other tables, and also
78 contains the number of entries. It also contains a magic number
79 and MIPS compiler version number, such as 2.0.
80
81 The auxiliary table is a series of 32 bit integers, that are
82 referenced as needed from the local symbol table. Unlike standard
83 COFF, the aux. information does not follow the symbol that uses
84 it, but rather is a separate table. In theory, this would allow
85 the MIPS compilers to collapse duplicate aux. entries, but I've not
86 noticed this happening with the 1.31 compiler suite. The different
87 types of aux. entries are:
88
89 1) dnLow: Low bound on array dimension.
90
91 2) dnHigh: High bound on array dimension.
92
93 3) isym: Index to the local symbol which is the start of the
94 function for the end of function first aux. entry.
95
96 4) width: Width of structures and bitfields.
97
98 5) count: Count of ranges for variant part.
99
100 6) rndx: A relative index into the symbol table. The relative
101 index field has two parts: rfd which is a pointer into the
102 relative file index table or ST_RFDESCAPE which says the next
103 aux. entry is the file number, and index: which is the pointer
104 into the local symbol within a given file table. This is for
105 things like references to types defined in another file.
106
107 7) Type information: This is like the COFF type bits, except it
108 is 32 bits instead of 16; they still have room to add new
109 basic types; and they can handle more than 6 levels of array,
110 pointer, function, etc. Each type information field contains
111 the following structure members:
112
113 a) fBitfield: a bit that says this is a bitfield, and the
114 size in bits follows as the next aux. entry.
115
116 b) continued: a bit that says the next aux. entry is a
117 continuation of the current type information (in case
118 there are more than 6 levels of array/ptr/function).
119
120 c) bt: an integer containing the base type before adding
121 array, pointer, function, etc. qualifiers. The
122 current base types that I have documentation for are:
123
124 btNil -- undefined
125 btAdr -- address - integer same size as ptr
126 btChar -- character
127 btUChar -- unsigned character
128 btShort -- short
129 btUShort -- unsigned short
130 btInt -- int
131 btUInt -- unsigned int
132 btLong -- long
133 btULong -- unsigned long
134 btFloat -- float (real)
135 btDouble -- Double (real)
136 btStruct -- Structure (Record)
137 btUnion -- Union (variant)
138 btEnum -- Enumerated
139 btTypedef -- defined via a typedef isymRef
140 btRange -- subrange of int
141 btSet -- pascal sets
142 btComplex -- fortran complex
143 btDComplex -- fortran double complex
144 btIndirect -- forward or unnamed typedef
145 btFixedDec -- Fixed Decimal
146 btFloatDec -- Float Decimal
147 btString -- Varying Length Character String
148 btBit -- Aligned Bit String
149 btPicture -- Picture
150 btVoid -- Void (MIPS cc revision >= 2.00)
151
152 d) tq0 - tq5: type qualifier fields as needed. The
153 current type qualifier fields I have documentation for
154 are:
155
156 tqNil -- no more qualifiers
157 tqPtr -- pointer
158 tqProc -- procedure
159 tqArray -- array
160 tqFar -- 8086 far pointers
161 tqVol -- volatile
162
163 The dense number table is used in the front ends, and disappears by
164 the time the .o is created.
165
166 With the 1.31 compiler suite, the optimization symbols don't seem
167 to be used as far as I can tell.
168
169 The linker is the first entity that creates the relative file
170 descriptor table, and I believe it is used so that the individual
171 file table pointers don't have to be rewritten when the objects are
172 merged together into the program file.
173
174 Unlike COFF, the basic symbol & string tables are split into
175 external and local symbols/strings. The relocation information
176 only goes off of the external symbol table, and the debug
177 information only goes off of the internal symbol table. The
178 external symbols can have links to an appropriate file index and
179 symbol within the file to give it the appropriate type information.
180 Because of this, the external symbols are actually larger than the
181 internal symbols (to contain the link information), and contain the
182 local symbol structure as a member, though this member is not the
183 first member of the external symbol structure (!). I suspect this
184 split is to make strip easier to deal with.
185
186 Each file table has offsets for where the line numbers, local
187 strings, local symbols, and procedure table starts from within the
188 global tables, and the indexs are reset to 0 for each of those
189 tables for the file.
190
191 The procedure table contains the binary equivalents of the .ent
192 (start of the function address), .frame (what register is the
193 virtual frame pointer, constant offset from the register to obtain
194 the VFP, and what register holds the return address), .mask/.fmask
195 (bitmask of saved registers, and where the first register is stored
196 relative to the VFP) assembler directives. It also contains the
197 low and high bounds of the line numbers if debugging is turned on.
198
199 The line number table is a compressed form of the normal COFF line
200 table. Each line number entry is either 1 or 3 bytes long, and
201 contains a signed delta from the previous line, and an unsigned
202 count of the number of instructions this statement takes.
203
204 The local symbol table contains the following fields:
205
206 1) iss: index to the local string table giving the name of the
207 symbol.
208
209 2) value: value of the symbol (address, register number, etc.).
210
211 3) st: symbol type. The current symbol types are:
212
213 stNil -- Nuthin' special
214 stGlobal -- external symbol
215 stStatic -- static
216 stParam -- procedure argument
217 stLocal -- local variable
218 stLabel -- label
219 stProc -- External Procedure
220 stBlock -- beginning of block
221 stEnd -- end (of anything)
222 stMember -- member (of anything)
223 stTypedef -- type definition
224 stFile -- file name
225 stRegReloc -- register relocation
226 stForward -- forwarding address
227 stStaticProc -- Static procedure
228 stConstant -- const
229
230 4) sc: storage class. The current storage classes are:
231
232 scText -- text symbol
233 scData -- initialized data symbol
234 scBss -- un-initialized data symbol
235 scRegister -- value of symbol is register number
236 scAbs -- value of symbol is absolute
237 scUndefined -- who knows?
238 scCdbLocal -- variable's value is IN se->va.??
239 scBits -- this is a bit field
240 scCdbSystem -- value is IN debugger's address space
241 scRegImage -- register value saved on stack
242 scInfo -- symbol contains debugger information
243 scUserStruct -- addr in struct user for current process
244 scSData -- load time only small data
245 scSBss -- load time only small common
246 scRData -- load time only read only data
247 scVar -- Var parameter (fortranpascal)
248 scCommon -- common variable
249 scSCommon -- small common
250 scVarRegister -- Var parameter in a register
251 scVariant -- Variant record
252 scSUndefined -- small undefined(external) data
253 scInit -- .init section symbol
254
255 5) index: pointer to a local symbol or aux. entry.
256
257 For the following program:
258
259 #include <stdio.h>
260
261 main(){
262 printf("Hello World!\n");
263 return 0;
264 }
265
266 Mips-tdump produces the following information:
267
268 Global file header:
269 magic number 0x162
270 # sections 2
271 timestamp 645311799, Wed Jun 13 17:16:39 1990
272 symbolic header offset 284
273 symbolic header size 96
274 optional header 56
275 flags 0x0
276
277 Symbolic header, magic number = 0x7009, vstamp = 1.31:
278
279 Info Offset Number Bytes
280 ==== ====== ====== =====
281
282 Line numbers 380 4 4 [13]
283 Dense numbers 0 0 0
284 Procedures Tables 384 1 52
285 Local Symbols 436 16 192
286 Optimization Symbols 0 0 0
287 Auxiliary Symbols 628 39 156
288 Local Strings 784 80 80
289 External Strings 864 144 144
290 File Tables 1008 2 144
291 Relative Files 0 0 0
292 External Symbols 1152 20 320
293
294 File #0, "hello2.c"
295
296 Name index = 1 Readin = No
297 Merge = No Endian = LITTLE
298 Debug level = G2 Language = C
299 Adr = 0x00000000
300
301 Info Start Number Size Offset
302 ==== ===== ====== ==== ======
303 Local strings 0 15 15 784
304 Local symbols 0 6 72 436
305 Line numbers 0 13 13 380
306 Optimization symbols 0 0 0 0
307 Procedures 0 1 52 384
308 Auxiliary symbols 0 14 56 628
309 Relative Files 0 0 0 0
310
311 There are 6 local symbols, starting at 436
312
313 Symbol# 0: "hello2.c"
314 End+1 symbol = 6
315 String index = 1
316 Storage class = Text Index = 6
317 Symbol type = File Value = 0
318
319 Symbol# 1: "main"
320 End+1 symbol = 5
321 Type = int
322 String index = 10
323 Storage class = Text Index = 12
324 Symbol type = Proc Value = 0
325
326 Symbol# 2: ""
327 End+1 symbol = 4
328 String index = 0
329 Storage class = Text Index = 4
330 Symbol type = Block Value = 8
331
332 Symbol# 3: ""
333 First symbol = 2
334 String index = 0
335 Storage class = Text Index = 2
336 Symbol type = End Value = 28
337
338 Symbol# 4: "main"
339 First symbol = 1
340 String index = 10
341 Storage class = Text Index = 1
342 Symbol type = End Value = 52
343
344 Symbol# 5: "hello2.c"
345 First symbol = 0
346 String index = 1
347 Storage class = Text Index = 0
348 Symbol type = End Value = 0
349
350 There are 14 auxiliary table entries, starting at 628.
351
352 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
353 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
354 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0]
355 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0]
356 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
357 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0]
358 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0]
359 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0]
360 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0]
361 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0]
362 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0]
363 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0]
364 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0]
365 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
366
367 There are 1 procedure descriptor entries, starting at 0.
368
369 Procedure descriptor 0:
370 Name index = 10 Name = "main"
371 .mask 0x80000000,-4 .fmask 0x00000000,0
372 .frame $29,24,$31
373 Opt. start = -1 Symbols start = 1
374 First line # = 3 Last line # = 6
375 Line Offset = 0 Address = 0x00000000
376
377 There are 4 bytes holding line numbers, starting at 380.
378 Line 3, delta 0, count 2
379 Line 4, delta 1, count 3
380 Line 5, delta 1, count 2
381 Line 6, delta 1, count 6
382
383 File #1, "/usr/include/stdio.h"
384
385 Name index = 1 Readin = No
386 Merge = Yes Endian = LITTLE
387 Debug level = G2 Language = C
388 Adr = 0x00000000
389
390 Info Start Number Size Offset
391 ==== ===== ====== ==== ======
392 Local strings 15 65 65 799
393 Local symbols 6 10 120 508
394 Line numbers 0 0 0 380
395 Optimization symbols 0 0 0 0
396 Procedures 1 0 0 436
397 Auxiliary symbols 14 25 100 684
398 Relative Files 0 0 0 0
399
400 There are 10 local symbols, starting at 442
401
402 Symbol# 0: "/usr/include/stdio.h"
403 End+1 symbol = 10
404 String index = 1
405 Storage class = Text Index = 10
406 Symbol type = File Value = 0
407
408 Symbol# 1: "_iobuf"
409 End+1 symbol = 9
410 String index = 22
411 Storage class = Info Index = 9
412 Symbol type = Block Value = 20
413
414 Symbol# 2: "_cnt"
415 Type = int
416 String index = 29
417 Storage class = Info Index = 4
418 Symbol type = Member Value = 0
419
420 Symbol# 3: "_ptr"
421 Type = ptr to char
422 String index = 34
423 Storage class = Info Index = 15
424 Symbol type = Member Value = 32
425
426 Symbol# 4: "_base"
427 Type = ptr to char
428 String index = 39
429 Storage class = Info Index = 16
430 Symbol type = Member Value = 64
431
432 Symbol# 5: "_bufsiz"
433 Type = int
434 String index = 45
435 Storage class = Info Index = 4
436 Symbol type = Member Value = 96
437
438 Symbol# 6: "_flag"
439 Type = short
440 String index = 53
441 Storage class = Info Index = 3
442 Symbol type = Member Value = 128
443
444 Symbol# 7: "_file"
445 Type = char
446 String index = 59
447 Storage class = Info Index = 2
448 Symbol type = Member Value = 144
449
450 Symbol# 8: ""
451 First symbol = 1
452 String index = 0
453 Storage class = Info Index = 1
454 Symbol type = End Value = 0
455
456 Symbol# 9: "/usr/include/stdio.h"
457 First symbol = 0
458 String index = 1
459 Storage class = Text Index = 0
460 Symbol type = End Value = 0
461
462 There are 25 auxiliary table entries, starting at 642.
463
464 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f]
465 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
466 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
467 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0]
468 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1]
469 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
470 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4]
471 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
472 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
473 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0]
474 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0]
475 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
476 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
477 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
478 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
479 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
480 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
481 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
482 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
483 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
484 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
485 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
486 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
487 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
488 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
489
490 There are 0 procedure descriptor entries, starting at 1.
491
492 There are 20 external symbols, starting at 1152
493
494 Symbol# 0: "_iob"
495 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 }
496 String index = 0 Ifd = 1
497 Storage class = Nil Index = 17
498 Symbol type = Global Value = 60
499
500 Symbol# 1: "fopen"
501 String index = 5 Ifd = 1
502 Storage class = Nil Index = 1048575
503 Symbol type = Proc Value = 0
504
505 Symbol# 2: "fdopen"
506 String index = 11 Ifd = 1
507 Storage class = Nil Index = 1048575
508 Symbol type = Proc Value = 0
509
510 Symbol# 3: "freopen"
511 String index = 18 Ifd = 1
512 Storage class = Nil Index = 1048575
513 Symbol type = Proc Value = 0
514
515 Symbol# 4: "popen"
516 String index = 26 Ifd = 1
517 Storage class = Nil Index = 1048575
518 Symbol type = Proc Value = 0
519
520 Symbol# 5: "tmpfile"
521 String index = 32 Ifd = 1
522 Storage class = Nil Index = 1048575
523 Symbol type = Proc Value = 0
524
525 Symbol# 6: "ftell"
526 String index = 40 Ifd = 1
527 Storage class = Nil Index = 1048575
528 Symbol type = Proc Value = 0
529
530 Symbol# 7: "rewind"
531 String index = 46 Ifd = 1
532 Storage class = Nil Index = 1048575
533 Symbol type = Proc Value = 0
534
535 Symbol# 8: "setbuf"
536 String index = 53 Ifd = 1
537 Storage class = Nil Index = 1048575
538 Symbol type = Proc Value = 0
539
540 Symbol# 9: "setbuffer"
541 String index = 60 Ifd = 1
542 Storage class = Nil Index = 1048575
543 Symbol type = Proc Value = 0
544
545 Symbol# 10: "setlinebuf"
546 String index = 70 Ifd = 1
547 Storage class = Nil Index = 1048575
548 Symbol type = Proc Value = 0
549
550 Symbol# 11: "fgets"
551 String index = 81 Ifd = 1
552 Storage class = Nil Index = 1048575
553 Symbol type = Proc Value = 0
554
555 Symbol# 12: "gets"
556 String index = 87 Ifd = 1
557 Storage class = Nil Index = 1048575
558 Symbol type = Proc Value = 0
559
560 Symbol# 13: "ctermid"
561 String index = 92 Ifd = 1
562 Storage class = Nil Index = 1048575
563 Symbol type = Proc Value = 0
564
565 Symbol# 14: "cuserid"
566 String index = 100 Ifd = 1
567 Storage class = Nil Index = 1048575
568 Symbol type = Proc Value = 0
569
570 Symbol# 15: "tempnam"
571 String index = 108 Ifd = 1
572 Storage class = Nil Index = 1048575
573 Symbol type = Proc Value = 0
574
575 Symbol# 16: "tmpnam"
576 String index = 116 Ifd = 1
577 Storage class = Nil Index = 1048575
578 Symbol type = Proc Value = 0
579
580 Symbol# 17: "sprintf"
581 String index = 123 Ifd = 1
582 Storage class = Nil Index = 1048575
583 Symbol type = Proc Value = 0
584
585 Symbol# 18: "main"
586 Type = int
587 String index = 131 Ifd = 0
588 Storage class = Text Index = 1
589 Symbol type = Proc Value = 0
590
591 Symbol# 19: "printf"
592 String index = 136 Ifd = 0
593 Storage class = Undefined Index = 1048575
594 Symbol type = Proc Value = 0
595
596 The following auxiliary table entries were unused:
597
598 #0 0 0x00000000 void
599 #2 8 0x00000008 char
600 #3 16 0x00000010 short
601 #4 24 0x00000018 int
602 #5 32 0x00000020 long
603 #6 40 0x00000028 float
604 #7 44 0x0000002c double
605 #8 12 0x0000000c unsigned char
606 #9 20 0x00000014 unsigned short
607 #10 28 0x0000001c unsigned int
608 #11 36 0x00000024 unsigned long
609 #14 0 0x00000000 void
610 #15 24 0x00000018 int
611 #19 32 0x00000020 long
612 #20 40 0x00000028 float
613 #21 44 0x0000002c double
614 #22 12 0x0000000c unsigned char
615 #23 20 0x00000014 unsigned short
616 #24 28 0x0000001c unsigned int
617 #25 36 0x00000024 unsigned long
618 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 }
619 */
620
621 /* Redefinition of of storage classes as an enumeration for better
622 debugging. */
623
624 typedef enum sc {
625 sc_Nil = scNil, /* no storage class */
626 sc_Text = scText, /* text symbol */
627 sc_Data = scData, /* initialized data symbol */
628 sc_Bss = scBss, /* un-initialized data symbol */
629 sc_Register = scRegister, /* value of symbol is register number */
630 sc_Abs = scAbs, /* value of symbol is absolute */
631 sc_Undefined = scUndefined, /* who knows? */
632 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */
633 sc_Bits = scBits, /* this is a bit field */
634 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */
635 sc_RegImage = scRegImage, /* register value saved on stack */
636 sc_Info = scInfo, /* symbol contains debugger information */
637 sc_UserStruct = scUserStruct, /* addr in struct user for current process */
638 sc_SData = scSData, /* load time only small data */
639 sc_SBss = scSBss, /* load time only small common */
640 sc_RData = scRData, /* load time only read only data */
641 sc_Var = scVar, /* Var parameter (fortran,pascal) */
642 sc_Common = scCommon, /* common variable */
643 sc_SCommon = scSCommon, /* small common */
644 sc_VarRegister = scVarRegister, /* Var parameter in a register */
645 sc_Variant = scVariant, /* Variant record */
646 sc_SUndefined = scSUndefined, /* small undefined(external) data */
647 sc_Init = scInit, /* .init section symbol */
648 sc_Max = scMax /* Max storage class+1 */
649 } sc_t;
650
651 /* Redefinition of symbol type. */
652
653 typedef enum st {
654 st_Nil = stNil, /* Nuthin' special */
655 st_Global = stGlobal, /* external symbol */
656 st_Static = stStatic, /* static */
657 st_Param = stParam, /* procedure argument */
658 st_Local = stLocal, /* local variable */
659 st_Label = stLabel, /* label */
660 st_Proc = stProc, /* " " Procedure */
661 st_Block = stBlock, /* beginning of block */
662 st_End = stEnd, /* end (of anything) */
663 st_Member = stMember, /* member (of anything - struct/union/enum */
664 st_Typedef = stTypedef, /* type definition */
665 st_File = stFile, /* file name */
666 st_RegReloc = stRegReloc, /* register relocation */
667 st_Forward = stForward, /* forwarding address */
668 st_StaticProc = stStaticProc, /* load time only static procs */
669 st_Constant = stConstant, /* const */
670 st_Str = stStr, /* string */
671 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */
672 st_Expr = stExpr, /* 2+2 vs. 4 */
673 st_Type = stType, /* post-coercion SER */
674 st_Max = stMax /* max type+1 */
675 } st_t;
676
677 /* Redefinition of type qualifiers. */
678
679 typedef enum tq {
680 tq_Nil = tqNil, /* bt is what you see */
681 tq_Ptr = tqPtr, /* pointer */
682 tq_Proc = tqProc, /* procedure */
683 tq_Array = tqArray, /* duh */
684 tq_Far = tqFar, /* longer addressing - 8086/8 land */
685 tq_Vol = tqVol, /* volatile */
686 tq_Max = tqMax /* Max type qualifier+1 */
687 } tq_t;
688
689 /* Redefinition of basic types. */
690
691 typedef enum bt {
692 bt_Nil = btNil, /* undefined */
693 bt_Adr = btAdr, /* address - integer same size as pointer */
694 bt_Char = btChar, /* character */
695 bt_UChar = btUChar, /* unsigned character */
696 bt_Short = btShort, /* short */
697 bt_UShort = btUShort, /* unsigned short */
698 bt_Int = btInt, /* int */
699 bt_UInt = btUInt, /* unsigned int */
700 bt_Long = btLong, /* long */
701 bt_ULong = btULong, /* unsigned long */
702 bt_Float = btFloat, /* float (real) */
703 bt_Double = btDouble, /* Double (real) */
704 bt_Struct = btStruct, /* Structure (Record) */
705 bt_Union = btUnion, /* Union (variant) */
706 bt_Enum = btEnum, /* Enumerated */
707 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */
708 bt_Range = btRange, /* subrange of int */
709 bt_Set = btSet, /* pascal sets */
710 bt_Complex = btComplex, /* fortran complex */
711 bt_DComplex = btDComplex, /* fortran double complex */
712 bt_Indirect = btIndirect, /* forward or unnamed typedef */
713 bt_FixedDec = btFixedDec, /* Fixed Decimal */
714 bt_FloatDec = btFloatDec, /* Float Decimal */
715 bt_String = btString, /* Varying Length Character String */
716 bt_Bit = btBit, /* Aligned Bit String */
717 bt_Picture = btPicture, /* Picture */
718 bt_Void = btVoid, /* Void */
719 bt_Max = btMax /* Max basic type+1 */
720 } bt_t;
721
722 #define N_TQ itqMax
723
724 /* States for whether to hash type or not. */
725 typedef enum hash_state {
726 hash_no = 0, /* Don't hash type */
727 hash_yes = 1, /* OK to hash type, or use previous hash */
728 hash_record = 2 /* OK to record hash, but don't use prev. */
729 } hash_state_t;
730
731 /* Types of different sized allocation requests. */
732 enum alloc_type {
733 alloc_type_none, /* dummy value */
734 alloc_type_scope, /* nested scopes linked list */
735 alloc_type_vlinks, /* glue linking pages in varray */
736 alloc_type_shash, /* string hash element */
737 alloc_type_thash, /* type hash element */
738 alloc_type_tag, /* struct/union/tag element */
739 alloc_type_forward, /* element to hold unknown tag */
740 alloc_type_thead, /* head of type hash list */
741 alloc_type_varray, /* general varray allocation */
742 alloc_type_lineno, /* line number list */
743 alloc_type_last /* last+1 element for array bounds */
744 };
745
746 /* Types of auxiliary type information. */
747 enum aux_type {
748 aux_tir, /* TIR type information */
749 aux_rndx, /* relative index into symbol table */
750 aux_dnLow, /* low dimension */
751 aux_dnHigh, /* high dimension */
752 aux_isym, /* symbol table index (end of proc) */
753 aux_iss, /* index into string space (not used) */
754 aux_width, /* width for non-default sized struc fields */
755 aux_count /* count of ranges for variant arm */
756 };
757
758 /* Structures to provide n-number of virtual arrays, each of which can
759 grow linearly, and which are written in the object file as
760 sequential pages. On systems with a BSD malloc, the
761 MAX_CLUSTER_PAGES should be 1 less than a power of two, since
762 malloc adds it's overhead, and rounds up to the next power of 2.
763 Pages are linked together via a linked list.
764
765 If PAGE_SIZE is > 4096, the string length in the shash_t structure
766 can't be represented (assuming there are strings > 4096 bytes). */
767
768 /* FIXME: Yes, there can be such strings while emitting C++ class debug
769 info. Templates are the offender here, the test case in question
770 having a mangled class name of
771
772 t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\
773 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey
774
775 Repeat that a couple dozen times while listing the class members and
776 you've got strings over 4k. Hack around this for now by increasing
777 the page size. A proper solution would abandon this structure scheme
778 certainly for very large strings, and possibly entirely. */
779
780 #ifndef PAGE_SIZE
781 #define PAGE_SIZE (8*1024) /* size of varray pages */
782 #endif
783
784 #define PAGE_USIZE ((unsigned long) PAGE_SIZE)
785
786 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */
787 #define MAX_CLUSTER_PAGES 63
788 #endif
789
790 /* Linked list connecting separate page allocations. */
791 typedef struct vlinks {
792 struct vlinks *prev; /* previous set of pages */
793 struct vlinks *next; /* next set of pages */
794 union page *datum; /* start of page */
795 unsigned long start_index; /* starting index # of page */
796 } vlinks_t;
797
798 /* Virtual array header. */
799 typedef struct varray {
800 vlinks_t *first; /* first page link */
801 vlinks_t *last; /* last page link */
802 unsigned long num_allocated; /* # objects allocated */
803 unsigned short object_size; /* size in bytes of each object */
804 unsigned short objects_per_page; /* # objects that can fit on a page */
805 unsigned short objects_last_page; /* # objects allocated on last page */
806 } varray_t;
807
808 #ifndef MALLOC_CHECK
809 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type))
810 #else
811 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE)
812 #endif
813
814 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \
815 (vlinks_t *)0, /* first */ \
816 (vlinks_t *)0, /* last */ \
817 0, /* num_allocated */ \
818 sizeof (type), /* object_size */ \
819 OBJECTS_PER_PAGE (type), /* objects_per_page */ \
820 OBJECTS_PER_PAGE (type), /* objects_last_page */ \
821 }
822
823 /* Master type for indexes within the symbol table. */
824 typedef unsigned long symint_t;
825
826 /* Linked list support for nested scopes (file, block, structure, etc.). */
827 typedef struct scope {
828 struct scope *prev; /* previous scope level */
829 struct scope *free; /* free list pointer */
830 struct localsym *lsym; /* pointer to local symbol node */
831 st_t type; /* type of the node */
832 } scope_t;
833
834 /* For a local symbol we store a gas symbol as well as the debugging
835 information we generate. The gas symbol will be NULL if this is
836 only a debugging symbol. */
837 typedef struct localsym {
838 const char *name; /* symbol name */
839 symbolS *as_sym; /* symbol as seen by gas */
840 bfd_vma addend; /* addend to as_sym value */
841 struct efdr *file_ptr; /* file pointer */
842 struct ecoff_proc *proc_ptr; /* proc pointer */
843 struct localsym *begin_ptr; /* symbol at start of block */
844 struct ecoff_aux *index_ptr; /* index value to be filled in */
845 struct forward *forward_ref; /* forward references to this symbol */
846 long sym_index; /* final symbol index */
847 EXTR ecoff_sym; /* ECOFF debugging symbol */
848 } localsym_t;
849
850 /* For aux information we keep the type and the data. */
851 typedef struct ecoff_aux {
852 enum aux_type type; /* aux type */
853 AUXU data; /* aux data */
854 } aux_t;
855
856 /* For a procedure we store the gas symbol as well as the PDR
857 debugging information. */
858 typedef struct ecoff_proc {
859 localsym_t *sym; /* associated symbol */
860 PDR pdr; /* ECOFF debugging info */
861 } proc_t;
862
863 /* Number of proc_t structures allocated. */
864 static unsigned long proc_cnt;
865
866 /* Forward reference list for tags referenced, but not yet defined. */
867 typedef struct forward {
868 struct forward *next; /* next forward reference */
869 struct forward *free; /* free list pointer */
870 aux_t *ifd_ptr; /* pointer to store file index */
871 aux_t *index_ptr; /* pointer to store symbol index */
872 } forward_t;
873
874 /* Linked list support for tags. The first tag in the list is always
875 the current tag for that block. */
876 typedef struct tag {
877 struct tag *free; /* free list pointer */
878 struct shash *hash_ptr; /* pointer to the hash table head */
879 struct tag *same_name; /* tag with same name in outer scope */
880 struct tag *same_block; /* next tag defined in the same block. */
881 struct forward *forward_ref; /* list of forward references */
882 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
883 symint_t ifd; /* file # tag defined in */
884 localsym_t *sym; /* file's local symbols */
885 } tag_t;
886
887 /* Head of a block's linked list of tags. */
888 typedef struct thead {
889 struct thead *prev; /* previous block */
890 struct thead *free; /* free list pointer */
891 struct tag *first_tag; /* first tag in block defined */
892 } thead_t;
893
894 /* Union containing pointers to each the small structures which are freed up. */
895 typedef union small_free {
896 scope_t *f_scope; /* scope structure */
897 thead_t *f_thead; /* tag head structure */
898 tag_t *f_tag; /* tag element structure */
899 forward_t *f_forward; /* forward tag reference */
900 } small_free_t;
901
902 /* String hash table entry. */
903
904 typedef struct shash {
905 char *string; /* string we are hashing */
906 symint_t indx; /* index within string table */
907 EXTR *esym_ptr; /* global symbol pointer */
908 localsym_t *sym_ptr; /* local symbol pointer */
909 localsym_t *end_ptr; /* symbol pointer to end block */
910 tag_t *tag_ptr; /* tag pointer */
911 proc_t *proc_ptr; /* procedure descriptor pointer */
912 } shash_t;
913
914 /* Type hash table support. The size of the hash table must fit
915 within a page with the other extended file descriptor information.
916 Because unique types which are hashed are fewer in number than
917 strings, we use a smaller hash value. */
918
919 #define HASHBITS 30
920
921 #ifndef THASH_SIZE
922 #define THASH_SIZE 113
923 #endif
924
925 typedef struct thash {
926 struct thash *next; /* next hash value */
927 AUXU type; /* type we are hashing */
928 symint_t indx; /* index within string table */
929 } thash_t;
930
931 /* Extended file descriptor that contains all of the support necessary
932 to add things to each file separately. */
933 typedef struct efdr {
934 FDR fdr; /* File header to be written out */
935 FDR *orig_fdr; /* original file header */
936 char *name; /* filename */
937 int fake; /* whether this is faked .file */
938 symint_t void_type; /* aux. pointer to 'void' type */
939 symint_t int_type; /* aux. pointer to 'int' type */
940 scope_t *cur_scope; /* current nested scopes */
941 symint_t file_index; /* current file number */
942 int nested_scopes; /* # nested scopes */
943 varray_t strings; /* local strings */
944 varray_t symbols; /* local symbols */
945 varray_t procs; /* procedures */
946 varray_t aux_syms; /* auxiliary symbols */
947 struct efdr *next_file; /* next file descriptor */
948 /* string/type hash tables */
949 struct hash_control *str_hash; /* string hash table */
950 thash_t *thash_head[THASH_SIZE];
951 } efdr_t;
952
953 /* Pre-initialized extended file structure. */
954 static const efdr_t init_file = {
955 { /* FDR structure */
956 0, /* adr: memory address of beginning of file */
957 0, /* rss: file name (of source, if known) */
958 0, /* issBase: file's string space */
959 0, /* cbSs: number of bytes in the ss */
960 0, /* isymBase: beginning of symbols */
961 0, /* csym: count file's of symbols */
962 0, /* ilineBase: file's line symbols */
963 0, /* cline: count of file's line symbols */
964 0, /* ioptBase: file's optimization entries */
965 0, /* copt: count of file's optimization entries */
966 0, /* ipdFirst: start of procedures for this file */
967 0, /* cpd: count of procedures for this file */
968 0, /* iauxBase: file's auxiliary entries */
969 0, /* caux: count of file's auxiliary entries */
970 0, /* rfdBase: index into the file indirect table */
971 0, /* crfd: count file indirect entries */
972 langC, /* lang: language for this file */
973 1, /* fMerge: whether this file can be merged */
974 0, /* fReadin: true if read in (not just created) */
975 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */
976 GLEVEL_2, /* glevel: level this file was compiled with */
977 0, /* reserved: reserved for future use */
978 0, /* cbLineOffset: byte offset from header for this file ln's */
979 0, /* cbLine: size of lines for this file */
980 },
981
982 (FDR *)0, /* orig_fdr: original file header pointer */
983 (char *)0, /* name: pointer to filename */
984 0, /* fake: whether this is a faked .file */
985 0, /* void_type: ptr to aux node for void type */
986 0, /* int_type: ptr to aux node for int type */
987 (scope_t *)0, /* cur_scope: current scope being processed */
988 0, /* file_index: current file # */
989 0, /* nested_scopes: # nested scopes */
990 INIT_VARRAY (char), /* strings: local string varray */
991 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */
992 INIT_VARRAY (proc_t), /* procs: procedure varray */
993 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */
994
995 (struct efdr *)0, /* next_file: next file structure */
996
997 (struct hash_control *)0, /* str_hash: string hash table */
998 { 0 }, /* thash_head: type hash table */
999 };
1000
1001 static efdr_t *first_file; /* first file descriptor */
1002 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */
1003
1004 /* Line number information is kept in a list until the assembly is
1005 finished. */
1006 typedef struct lineno_list {
1007 struct lineno_list *next; /* next element in list */
1008 efdr_t *file; /* file this line is in */
1009 proc_t *proc; /* procedure this line is in */
1010 fragS *frag; /* fragment this line number is in */
1011 unsigned long paddr; /* offset within fragment */
1012 long lineno; /* actual line number */
1013 } lineno_list_t;
1014
1015 static lineno_list_t *first_lineno;
1016 static lineno_list_t *last_lineno;
1017 static lineno_list_t **last_lineno_ptr = &first_lineno;
1018
1019 /* Sometimes there will be some .loc statements before a .ent. We
1020 keep them in this list so that we can fill in the procedure pointer
1021 after we see the .ent. */
1022 static lineno_list_t *noproc_lineno;
1023
1024 /* Union of various things that are held in pages. */
1025 typedef union page {
1026 char byte [ PAGE_SIZE ];
1027 unsigned char ubyte [ PAGE_SIZE ];
1028 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ];
1029 FDR ofile [ PAGE_SIZE / sizeof (FDR) ];
1030 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ];
1031 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ];
1032 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ];
1033 DNR dense [ PAGE_SIZE / sizeof (DNR) ];
1034 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ];
1035 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ];
1036 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ];
1037 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ];
1038 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ];
1039 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ];
1040 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ];
1041 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ];
1042 } page_type;
1043
1044 /* Structure holding allocation information for small sized structures. */
1045 typedef struct alloc_info {
1046 char *alloc_name; /* name of this allocation type (must be first) */
1047 page_type *cur_page; /* current page being allocated from */
1048 small_free_t free_list; /* current free list if any */
1049 int unallocated; /* number of elements unallocated on page */
1050 int total_alloc; /* total number of allocations */
1051 int total_free; /* total number of frees */
1052 int total_pages; /* total number of pages allocated */
1053 } alloc_info_t;
1054
1055 /* Type information collected together. */
1056 typedef struct type_info {
1057 bt_t basic_type; /* basic type */
1058 int orig_type; /* original COFF-based type */
1059 int num_tq; /* # type qualifiers */
1060 int num_dims; /* # dimensions */
1061 int num_sizes; /* # sizes */
1062 int extra_sizes; /* # extra sizes not tied with dims */
1063 tag_t * tag_ptr; /* tag pointer */
1064 int bitfield; /* symbol is a bitfield */
1065 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/
1066 symint_t dimensions [N_TQ]; /* dimensions for each array */
1067 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of
1068 struct/union/enum + bitfield size */
1069 } type_info_t;
1070
1071 /* Pre-initialized type_info struct. */
1072 static const type_info_t type_info_init = {
1073 bt_Nil, /* basic type */
1074 T_NULL, /* original COFF-based type */
1075 0, /* # type qualifiers */
1076 0, /* # dimensions */
1077 0, /* # sizes */
1078 0, /* sizes not tied with dims */
1079 NULL, /* ptr to tag */
1080 0, /* bitfield */
1081 { /* type qualifiers */
1082 tq_Nil,
1083 tq_Nil,
1084 tq_Nil,
1085 tq_Nil,
1086 tq_Nil,
1087 tq_Nil,
1088 },
1089 { /* dimensions */
1090 0,
1091 0,
1092 0,
1093 0,
1094 0,
1095 0
1096 },
1097 { /* sizes */
1098 0,
1099 0,
1100 0,
1101 0,
1102 0,
1103 0,
1104 0,
1105 0,
1106 },
1107 };
1108
1109 /* Global hash table for the tags table and global table for file
1110 descriptors. */
1111
1112 static varray_t file_desc = INIT_VARRAY (efdr_t);
1113
1114 static struct hash_control *tag_hash;
1115
1116 /* Static types for int and void. Also, remember the last function's
1117 type (which is set up when we encounter the declaration for the
1118 function, and used when the end block for the function is emitted. */
1119
1120 static type_info_t int_type_info;
1121 static type_info_t void_type_info;
1122 static type_info_t last_func_type_info;
1123 static symbolS *last_func_sym_value;
1124
1125 /* Convert COFF basic type to ECOFF basic type. The T_NULL type
1126 really should use bt_Void, but this causes the current ecoff GDB to
1127 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS
1128 2.0) doesn't understand it, even though the compiler generates it.
1129 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler
1130 suite, but for now go with what works.
1131
1132 It would make sense for the .type and .scl directives to use the
1133 ECOFF numbers directly, rather than using the COFF numbers and
1134 mapping them. Unfortunately, this is historically what mips-tfile
1135 expects, and changing gcc now would be a considerable pain (the
1136 native compiler generates debugging information internally, rather
1137 than via the assembler, so it will never use .type or .scl). */
1138
1139 static const bt_t map_coff_types[] = {
1140 bt_Nil, /* T_NULL */
1141 bt_Nil, /* T_ARG */
1142 bt_Char, /* T_CHAR */
1143 bt_Short, /* T_SHORT */
1144 bt_Int, /* T_INT */
1145 bt_Long, /* T_LONG */
1146 bt_Float, /* T_FLOAT */
1147 bt_Double, /* T_DOUBLE */
1148 bt_Struct, /* T_STRUCT */
1149 bt_Union, /* T_UNION */
1150 bt_Enum, /* T_ENUM */
1151 bt_Enum, /* T_MOE */
1152 bt_UChar, /* T_UCHAR */
1153 bt_UShort, /* T_USHORT */
1154 bt_UInt, /* T_UINT */
1155 bt_ULong /* T_ULONG */
1156 };
1157
1158 /* Convert COFF storage class to ECOFF storage class. */
1159 static const sc_t map_coff_storage[] = {
1160 sc_Nil, /* 0: C_NULL */
1161 sc_Abs, /* 1: C_AUTO auto var */
1162 sc_Undefined, /* 2: C_EXT external */
1163 sc_Data, /* 3: C_STAT static */
1164 sc_Register, /* 4: C_REG register */
1165 sc_Undefined, /* 5: C_EXTDEF ??? */
1166 sc_Text, /* 6: C_LABEL label */
1167 sc_Text, /* 7: C_ULABEL user label */
1168 sc_Info, /* 8: C_MOS member of struct */
1169 sc_Abs, /* 9: C_ARG argument */
1170 sc_Info, /* 10: C_STRTAG struct tag */
1171 sc_Info, /* 11: C_MOU member of union */
1172 sc_Info, /* 12: C_UNTAG union tag */
1173 sc_Info, /* 13: C_TPDEF typedef */
1174 sc_Data, /* 14: C_USTATIC ??? */
1175 sc_Info, /* 15: C_ENTAG enum tag */
1176 sc_Info, /* 16: C_MOE member of enum */
1177 sc_Register, /* 17: C_REGPARM register parameter */
1178 sc_Bits, /* 18; C_FIELD bitfield */
1179 sc_Nil, /* 19 */
1180 sc_Nil, /* 20 */
1181 sc_Nil, /* 21 */
1182 sc_Nil, /* 22 */
1183 sc_Nil, /* 23 */
1184 sc_Nil, /* 24 */
1185 sc_Nil, /* 25 */
1186 sc_Nil, /* 26 */
1187 sc_Nil, /* 27 */
1188 sc_Nil, /* 28 */
1189 sc_Nil, /* 29 */
1190 sc_Nil, /* 30 */
1191 sc_Nil, /* 31 */
1192 sc_Nil, /* 32 */
1193 sc_Nil, /* 33 */
1194 sc_Nil, /* 34 */
1195 sc_Nil, /* 35 */
1196 sc_Nil, /* 36 */
1197 sc_Nil, /* 37 */
1198 sc_Nil, /* 38 */
1199 sc_Nil, /* 39 */
1200 sc_Nil, /* 40 */
1201 sc_Nil, /* 41 */
1202 sc_Nil, /* 42 */
1203 sc_Nil, /* 43 */
1204 sc_Nil, /* 44 */
1205 sc_Nil, /* 45 */
1206 sc_Nil, /* 46 */
1207 sc_Nil, /* 47 */
1208 sc_Nil, /* 48 */
1209 sc_Nil, /* 49 */
1210 sc_Nil, /* 50 */
1211 sc_Nil, /* 51 */
1212 sc_Nil, /* 52 */
1213 sc_Nil, /* 53 */
1214 sc_Nil, /* 54 */
1215 sc_Nil, /* 55 */
1216 sc_Nil, /* 56 */
1217 sc_Nil, /* 57 */
1218 sc_Nil, /* 58 */
1219 sc_Nil, /* 59 */
1220 sc_Nil, /* 60 */
1221 sc_Nil, /* 61 */
1222 sc_Nil, /* 62 */
1223 sc_Nil, /* 63 */
1224 sc_Nil, /* 64 */
1225 sc_Nil, /* 65 */
1226 sc_Nil, /* 66 */
1227 sc_Nil, /* 67 */
1228 sc_Nil, /* 68 */
1229 sc_Nil, /* 69 */
1230 sc_Nil, /* 70 */
1231 sc_Nil, /* 71 */
1232 sc_Nil, /* 72 */
1233 sc_Nil, /* 73 */
1234 sc_Nil, /* 74 */
1235 sc_Nil, /* 75 */
1236 sc_Nil, /* 76 */
1237 sc_Nil, /* 77 */
1238 sc_Nil, /* 78 */
1239 sc_Nil, /* 79 */
1240 sc_Nil, /* 80 */
1241 sc_Nil, /* 81 */
1242 sc_Nil, /* 82 */
1243 sc_Nil, /* 83 */
1244 sc_Nil, /* 84 */
1245 sc_Nil, /* 85 */
1246 sc_Nil, /* 86 */
1247 sc_Nil, /* 87 */
1248 sc_Nil, /* 88 */
1249 sc_Nil, /* 89 */
1250 sc_Nil, /* 90 */
1251 sc_Nil, /* 91 */
1252 sc_Nil, /* 92 */
1253 sc_Nil, /* 93 */
1254 sc_Nil, /* 94 */
1255 sc_Nil, /* 95 */
1256 sc_Nil, /* 96 */
1257 sc_Nil, /* 97 */
1258 sc_Nil, /* 98 */
1259 sc_Nil, /* 99 */
1260 sc_Text, /* 100: C_BLOCK block start/end */
1261 sc_Text, /* 101: C_FCN function start/end */
1262 sc_Info, /* 102: C_EOS end of struct/union/enum */
1263 sc_Nil, /* 103: C_FILE file start */
1264 sc_Nil, /* 104: C_LINE line number */
1265 sc_Nil, /* 105: C_ALIAS combined type info */
1266 sc_Nil, /* 106: C_HIDDEN ??? */
1267 };
1268
1269 /* Convert COFF storage class to ECOFF symbol type. */
1270 static const st_t map_coff_sym_type[] = {
1271 st_Nil, /* 0: C_NULL */
1272 st_Local, /* 1: C_AUTO auto var */
1273 st_Global, /* 2: C_EXT external */
1274 st_Static, /* 3: C_STAT static */
1275 st_Local, /* 4: C_REG register */
1276 st_Global, /* 5: C_EXTDEF ??? */
1277 st_Label, /* 6: C_LABEL label */
1278 st_Label, /* 7: C_ULABEL user label */
1279 st_Member, /* 8: C_MOS member of struct */
1280 st_Param, /* 9: C_ARG argument */
1281 st_Block, /* 10: C_STRTAG struct tag */
1282 st_Member, /* 11: C_MOU member of union */
1283 st_Block, /* 12: C_UNTAG union tag */
1284 st_Typedef, /* 13: C_TPDEF typedef */
1285 st_Static, /* 14: C_USTATIC ??? */
1286 st_Block, /* 15: C_ENTAG enum tag */
1287 st_Member, /* 16: C_MOE member of enum */
1288 st_Param, /* 17: C_REGPARM register parameter */
1289 st_Member, /* 18; C_FIELD bitfield */
1290 st_Nil, /* 19 */
1291 st_Nil, /* 20 */
1292 st_Nil, /* 21 */
1293 st_Nil, /* 22 */
1294 st_Nil, /* 23 */
1295 st_Nil, /* 24 */
1296 st_Nil, /* 25 */
1297 st_Nil, /* 26 */
1298 st_Nil, /* 27 */
1299 st_Nil, /* 28 */
1300 st_Nil, /* 29 */
1301 st_Nil, /* 30 */
1302 st_Nil, /* 31 */
1303 st_Nil, /* 32 */
1304 st_Nil, /* 33 */
1305 st_Nil, /* 34 */
1306 st_Nil, /* 35 */
1307 st_Nil, /* 36 */
1308 st_Nil, /* 37 */
1309 st_Nil, /* 38 */
1310 st_Nil, /* 39 */
1311 st_Nil, /* 40 */
1312 st_Nil, /* 41 */
1313 st_Nil, /* 42 */
1314 st_Nil, /* 43 */
1315 st_Nil, /* 44 */
1316 st_Nil, /* 45 */
1317 st_Nil, /* 46 */
1318 st_Nil, /* 47 */
1319 st_Nil, /* 48 */
1320 st_Nil, /* 49 */
1321 st_Nil, /* 50 */
1322 st_Nil, /* 51 */
1323 st_Nil, /* 52 */
1324 st_Nil, /* 53 */
1325 st_Nil, /* 54 */
1326 st_Nil, /* 55 */
1327 st_Nil, /* 56 */
1328 st_Nil, /* 57 */
1329 st_Nil, /* 58 */
1330 st_Nil, /* 59 */
1331 st_Nil, /* 60 */
1332 st_Nil, /* 61 */
1333 st_Nil, /* 62 */
1334 st_Nil, /* 63 */
1335 st_Nil, /* 64 */
1336 st_Nil, /* 65 */
1337 st_Nil, /* 66 */
1338 st_Nil, /* 67 */
1339 st_Nil, /* 68 */
1340 st_Nil, /* 69 */
1341 st_Nil, /* 70 */
1342 st_Nil, /* 71 */
1343 st_Nil, /* 72 */
1344 st_Nil, /* 73 */
1345 st_Nil, /* 74 */
1346 st_Nil, /* 75 */
1347 st_Nil, /* 76 */
1348 st_Nil, /* 77 */
1349 st_Nil, /* 78 */
1350 st_Nil, /* 79 */
1351 st_Nil, /* 80 */
1352 st_Nil, /* 81 */
1353 st_Nil, /* 82 */
1354 st_Nil, /* 83 */
1355 st_Nil, /* 84 */
1356 st_Nil, /* 85 */
1357 st_Nil, /* 86 */
1358 st_Nil, /* 87 */
1359 st_Nil, /* 88 */
1360 st_Nil, /* 89 */
1361 st_Nil, /* 90 */
1362 st_Nil, /* 91 */
1363 st_Nil, /* 92 */
1364 st_Nil, /* 93 */
1365 st_Nil, /* 94 */
1366 st_Nil, /* 95 */
1367 st_Nil, /* 96 */
1368 st_Nil, /* 97 */
1369 st_Nil, /* 98 */
1370 st_Nil, /* 99 */
1371 st_Block, /* 100: C_BLOCK block start/end */
1372 st_Proc, /* 101: C_FCN function start/end */
1373 st_End, /* 102: C_EOS end of struct/union/enum */
1374 st_File, /* 103: C_FILE file start */
1375 st_Nil, /* 104: C_LINE line number */
1376 st_Nil, /* 105: C_ALIAS combined type info */
1377 st_Nil, /* 106: C_HIDDEN ??? */
1378 };
1379
1380 /* Keep track of different sized allocation requests. */
1381 static alloc_info_t alloc_counts[(int) alloc_type_last];
1382
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 struct hash_control *hash_tbl,
1412 const char *str,
1413 shash_t **ret_hash);
1414 static localsym_t *add_ecoff_symbol (const char *str, st_t type,
1415 sc_t storage, symbolS *sym,
1416 bfd_vma addend, symint_t value,
1417 symint_t indx);
1418 static symint_t add_aux_sym_symint (symint_t aux_word);
1419 static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index);
1420 static symint_t add_aux_sym_tir (type_info_t *t,
1421 hash_state_t state,
1422 thash_t **hash_tbl);
1423 static tag_t *get_tag (const char *tag, localsym_t *sym, bt_t basic_type);
1424 static void add_unknown_tag (tag_t *ptag);
1425 static void add_procedure (char *func);
1426 static void add_file (const char *file_name, int indx, int fake);
1427 #ifdef ECOFF_DEBUG
1428 static char *sc_to_string (sc_t storage_class);
1429 static char *st_to_string (st_t symbol_type);
1430 #endif
1431 static void mark_stabs (int);
1432 static char *ecoff_add_bytes (char **buf, char **bufend,
1433 char *bufptr, unsigned long need);
1434 static unsigned long ecoff_padding_adjust
1435 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1436 unsigned long offset, char **bufptrptr);
1437 static unsigned long ecoff_build_lineno
1438 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1439 unsigned long offset, long *linecntptr);
1440 static unsigned long ecoff_build_symbols
1441 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1442 unsigned long offset);
1443 static unsigned long ecoff_build_procs
1444 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1445 unsigned long offset);
1446 static unsigned long ecoff_build_aux
1447 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1448 unsigned long offset);
1449 static unsigned long ecoff_build_strings (char **buf, char **bufend,
1450 unsigned long offset,
1451 varray_t *vp);
1452 static unsigned long ecoff_build_ss
1453 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1454 unsigned long offset);
1455 static unsigned long ecoff_build_fdr
1456 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1457 unsigned long offset);
1458 static void ecoff_setup_ext (void);
1459 static page_type *allocate_cluster (unsigned long npages);
1460 static page_type *allocate_page (void);
1461 static scope_t *allocate_scope (void);
1462 static void free_scope (scope_t *ptr);
1463 static vlinks_t *allocate_vlinks (void);
1464 static shash_t *allocate_shash (void);
1465 static thash_t *allocate_thash (void);
1466 static tag_t *allocate_tag (void);
1467 static void free_tag (tag_t *ptr);
1468 static forward_t *allocate_forward (void);
1469 static thead_t *allocate_thead (void);
1470 static void free_thead (thead_t *ptr);
1471 static lineno_list_t *allocate_lineno_list (void);
1472
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 = hash_new ();
1479 top_tag_head = allocate_thead ();
1480 top_tag_head->first_tag = (tag_t *) NULL;
1481 top_tag_head->free = (thead_t *) NULL;
1482 top_tag_head->prev = cur_tag_head;
1483 cur_tag_head = top_tag_head;
1484 }
1485
1486 /* This function should be called when a symbol is created. */
1487
1488 void
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,struct hash_control * hash_tbl,const char * str,shash_t ** ret_hash)1550 add_string (varray_t *vp, /* string obstack */
1551 struct hash_control *hash_tbl, /* ptr to hash table */
1552 const char *str, /* string */
1553 shash_t **ret_hash /* return hash pointer */)
1554 {
1555 unsigned long len = strlen (str);
1556 shash_t *hash_ptr;
1557
1558 if (len >= PAGE_USIZE)
1559 as_fatal (_("string too big (%lu bytes)"), len);
1560
1561 hash_ptr = (shash_t *) hash_find (hash_tbl, str);
1562 if (hash_ptr == (shash_t *) NULL)
1563 {
1564 const char *err;
1565
1566 if (vp->objects_last_page + len >= PAGE_USIZE)
1567 {
1568 vp->num_allocated =
1569 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE;
1570 add_varray_page (vp);
1571 }
1572
1573 hash_ptr = allocate_shash ();
1574 hash_ptr->indx = vp->num_allocated;
1575
1576 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page];
1577
1578 vp->objects_last_page += len + 1;
1579 vp->num_allocated += len + 1;
1580
1581 strcpy (hash_ptr->string, str);
1582
1583 err = hash_insert (hash_tbl, str, (char *) hash_ptr);
1584 if (err)
1585 as_fatal (_("inserting \"%s\" into string hash table: %s"),
1586 str, err);
1587 }
1588
1589 if (ret_hash != (shash_t **) NULL)
1590 *ret_hash = hash_ptr;
1591
1592 return hash_ptr->indx;
1593 }
1594
1595 /* Add debugging information for a symbol. */
1596
1597 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)1598 add_ecoff_symbol (const char *str, /* symbol name */
1599 st_t type, /* symbol type */
1600 sc_t storage, /* storage class */
1601 symbolS *sym_value, /* associated symbol. */
1602 bfd_vma addend, /* addend to sym_value. */
1603 symint_t value, /* value of symbol */
1604 symint_t indx /* index to local/aux. syms */)
1605 {
1606 localsym_t *psym;
1607 scope_t *pscope;
1608 thead_t *ptag_head;
1609 tag_t *ptag;
1610 tag_t *ptag_next;
1611 varray_t *vp;
1612 int scope_delta = 0;
1613 shash_t *hash_ptr = (shash_t *) NULL;
1614
1615 if (cur_file_ptr == (efdr_t *) NULL)
1616 as_fatal (_("no current file pointer"));
1617
1618 vp = &cur_file_ptr->symbols;
1619
1620 if (vp->objects_last_page == vp->objects_per_page)
1621 add_varray_page (vp);
1622
1623 psym = &vp->last->datum->sym[vp->objects_last_page++];
1624
1625 if (str == (const char *) NULL && sym_value != (symbolS *) NULL)
1626 psym->name = S_GET_NAME (sym_value);
1627 else
1628 psym->name = str;
1629 psym->as_sym = sym_value;
1630 if (sym_value != (symbolS *) NULL)
1631 symbol_get_obj (sym_value)->ecoff_symbol = psym;
1632 psym->addend = addend;
1633 psym->file_ptr = cur_file_ptr;
1634 psym->proc_ptr = cur_proc_ptr;
1635 psym->begin_ptr = (localsym_t *) NULL;
1636 psym->index_ptr = (aux_t *) NULL;
1637 psym->forward_ref = (forward_t *) NULL;
1638 psym->sym_index = -1;
1639 memset (&psym->ecoff_sym, 0, sizeof (EXTR));
1640 psym->ecoff_sym.asym.value = value;
1641 psym->ecoff_sym.asym.st = (unsigned) type;
1642 psym->ecoff_sym.asym.sc = (unsigned) storage;
1643 psym->ecoff_sym.asym.index = indx;
1644
1645 /* If there is an associated symbol, we wait until the end of the
1646 assembly before deciding where to put the name (it may be just an
1647 external symbol). Otherwise, this is just a debugging symbol and
1648 the name should go with the current file. */
1649 if (sym_value == (symbolS *) NULL)
1650 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL)
1651 ? 0
1652 : add_string (&cur_file_ptr->strings,
1653 cur_file_ptr->str_hash,
1654 str,
1655 &hash_ptr));
1656
1657 ++vp->num_allocated;
1658
1659 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym))
1660 return psym;
1661
1662 /* Save the symbol within the hash table if this is a static
1663 item, and it has a name. */
1664 if (hash_ptr != (shash_t *) NULL
1665 && (type == st_Global || type == st_Static || type == st_Label
1666 || type == st_Proc || type == st_StaticProc))
1667 hash_ptr->sym_ptr = psym;
1668
1669 /* push or pop a scope if appropriate. */
1670 switch (type)
1671 {
1672 default:
1673 break;
1674
1675 case st_File: /* beginning of file */
1676 case st_Proc: /* procedure */
1677 case st_StaticProc: /* static procedure */
1678 case st_Block: /* begin scope */
1679 pscope = allocate_scope ();
1680 pscope->prev = cur_file_ptr->cur_scope;
1681 pscope->lsym = psym;
1682 pscope->type = type;
1683 cur_file_ptr->cur_scope = pscope;
1684
1685 if (type != st_File)
1686 scope_delta = 1;
1687
1688 /* For every block type except file, struct, union, or
1689 enumeration blocks, push a level on the tag stack. We omit
1690 file types, so that tags can span file boundaries. */
1691 if (type != st_File && storage != sc_Info)
1692 {
1693 ptag_head = allocate_thead ();
1694 ptag_head->first_tag = 0;
1695 ptag_head->prev = cur_tag_head;
1696 cur_tag_head = ptag_head;
1697 }
1698 break;
1699
1700 case st_End:
1701 pscope = cur_file_ptr->cur_scope;
1702 if (pscope == (scope_t *) NULL)
1703 as_fatal (_("too many st_End's"));
1704 else
1705 {
1706 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st;
1707
1708 psym->begin_ptr = pscope->lsym;
1709
1710 if (begin_type != st_File)
1711 scope_delta = -1;
1712
1713 /* Except for file, structure, union, or enumeration end
1714 blocks remove all tags created within this scope. */
1715 if (begin_type != st_File && storage != sc_Info)
1716 {
1717 ptag_head = cur_tag_head;
1718 cur_tag_head = ptag_head->prev;
1719
1720 for (ptag = ptag_head->first_tag;
1721 ptag != (tag_t *) NULL;
1722 ptag = ptag_next)
1723 {
1724 if (ptag->forward_ref != (forward_t *) NULL)
1725 add_unknown_tag (ptag);
1726
1727 ptag_next = ptag->same_block;
1728 ptag->hash_ptr->tag_ptr = ptag->same_name;
1729 free_tag (ptag);
1730 }
1731
1732 free_thead (ptag_head);
1733 }
1734
1735 cur_file_ptr->cur_scope = pscope->prev;
1736
1737 /* block begin gets next sym #. This is set when we know
1738 the symbol index value. */
1739
1740 /* Functions push two or more aux words as follows:
1741 1st word: index+1 of the end symbol (filled in later).
1742 2nd word: type of the function (plus any aux words needed).
1743 Also, tie the external pointer back to the function begin symbol. */
1744 if (begin_type != st_File && begin_type != st_Block)
1745 {
1746 symint_t ty;
1747 varray_t *svp = &cur_file_ptr->aux_syms;
1748
1749 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0);
1750 pscope->lsym->index_ptr =
1751 &svp->last->datum->aux[svp->objects_last_page - 1];
1752 ty = add_aux_sym_tir (&last_func_type_info,
1753 hash_no,
1754 &cur_file_ptr->thash_head[0]);
1755 (void) ty;
1756 /* This seems to be unnecessary. I'm not even sure what it is
1757 * intended to do. It's from mips-tfile.
1758 * if (last_func_sym_value != (symbolS *) NULL)
1759 * {
1760 * last_func_sym_value->ifd = cur_file_ptr->file_index;
1761 * last_func_sym_value->index = ty;
1762 * }
1763 */
1764 }
1765
1766 free_scope (pscope);
1767 }
1768 }
1769
1770 cur_file_ptr->nested_scopes += scope_delta;
1771
1772 #ifdef ECOFF_DEBUG
1773 if (debug && type != st_File
1774 && (debug > 2 || type == st_Block || type == st_End
1775 || type == st_Proc || type == st_StaticProc))
1776 {
1777 char *sc_str = sc_to_string (storage);
1778 char *st_str = st_to_string (type);
1779 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0);
1780
1781 fprintf (stderr,
1782 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s",
1783 value, depth, sc_str);
1784
1785 if (str_start && str_end_p1 - str_start > 0)
1786 fprintf (stderr, " st= %-11s name= %.*s\n",
1787 st_str, str_end_p1 - str_start, str_start);
1788 else
1789 {
1790 unsigned long len = strlen (st_str);
1791 fprintf (stderr, " st= %.*s\n", len - 1, st_str);
1792 }
1793 }
1794 #endif
1795
1796 return psym;
1797 }
1798
1799 /* Add an auxiliary symbol (passing a symint). This is actually used
1800 for integral aux types, not just symints. */
1801
1802 static symint_t
add_aux_sym_symint(symint_t aux_word)1803 add_aux_sym_symint (symint_t aux_word /* auxiliary information word */)
1804 {
1805 varray_t *vp;
1806 aux_t *aux_ptr;
1807
1808 if (cur_file_ptr == (efdr_t *) NULL)
1809 as_fatal (_("no current file pointer"));
1810
1811 vp = &cur_file_ptr->aux_syms;
1812
1813 if (vp->objects_last_page == vp->objects_per_page)
1814 add_varray_page (vp);
1815
1816 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1817 aux_ptr->type = aux_isym;
1818 aux_ptr->data.isym = aux_word;
1819
1820 return vp->num_allocated++;
1821 }
1822
1823 /* Add an auxiliary symbol (passing a file/symbol index combo). */
1824
1825 static symint_t
add_aux_sym_rndx(int file_index,symint_t sym_index)1826 add_aux_sym_rndx (int file_index, symint_t sym_index)
1827 {
1828 varray_t *vp;
1829 aux_t *aux_ptr;
1830
1831 if (cur_file_ptr == (efdr_t *) NULL)
1832 as_fatal (_("no current file pointer"));
1833
1834 vp = &cur_file_ptr->aux_syms;
1835
1836 if (vp->objects_last_page == vp->objects_per_page)
1837 add_varray_page (vp);
1838
1839 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1840 aux_ptr->type = aux_rndx;
1841 aux_ptr->data.rndx.rfd = file_index;
1842 aux_ptr->data.rndx.index = sym_index;
1843
1844 return vp->num_allocated++;
1845 }
1846
1847 /* Add an auxiliary symbol (passing the basic type and possibly
1848 type qualifiers). */
1849
1850 static symint_t
add_aux_sym_tir(type_info_t * t,hash_state_t state,thash_t ** hash_tbl)1851 add_aux_sym_tir (type_info_t *t, /* current type information */
1852 hash_state_t state, /* whether to hash type or not */
1853 thash_t **hash_tbl /* pointer to hash table to use */)
1854 {
1855 varray_t *vp;
1856 aux_t *aux_ptr;
1857 static AUXU init_aux;
1858 symint_t ret;
1859 int i;
1860 AUXU aux;
1861
1862 if (cur_file_ptr == (efdr_t *) NULL)
1863 as_fatal (_("no current file pointer"));
1864
1865 vp = &cur_file_ptr->aux_syms;
1866
1867 aux = init_aux;
1868 aux.ti.bt = (int) t->basic_type;
1869 aux.ti.continued = 0;
1870 aux.ti.fBitfield = t->bitfield;
1871
1872 aux.ti.tq0 = (int) t->type_qualifiers[0];
1873 aux.ti.tq1 = (int) t->type_qualifiers[1];
1874 aux.ti.tq2 = (int) t->type_qualifiers[2];
1875 aux.ti.tq3 = (int) t->type_qualifiers[3];
1876 aux.ti.tq4 = (int) t->type_qualifiers[4];
1877 aux.ti.tq5 = (int) t->type_qualifiers[5];
1878
1879 /* For anything that adds additional information, we must not hash,
1880 so check here, and reset our state. */
1881
1882 if (state != hash_no
1883 && (t->type_qualifiers[0] == tq_Array
1884 || t->type_qualifiers[1] == tq_Array
1885 || t->type_qualifiers[2] == tq_Array
1886 || t->type_qualifiers[3] == tq_Array
1887 || t->type_qualifiers[4] == tq_Array
1888 || t->type_qualifiers[5] == tq_Array
1889 || t->basic_type == bt_Struct
1890 || t->basic_type == bt_Union
1891 || t->basic_type == bt_Enum
1892 || t->bitfield
1893 || t->num_dims > 0))
1894 state = hash_no;
1895
1896 /* See if we can hash this type, and save some space, but some types
1897 can't be hashed (because they contain arrays or continuations),
1898 and others can be put into the hash list, but cannot use existing
1899 types because other aux entries precede this one. */
1900
1901 if (state != hash_no)
1902 {
1903 thash_t *hash_ptr;
1904 symint_t hi;
1905
1906 hi = aux.isym & ((1 << HASHBITS) - 1);
1907 hi %= THASH_SIZE;
1908
1909 for (hash_ptr = hash_tbl[hi];
1910 hash_ptr != (thash_t *)0;
1911 hash_ptr = hash_ptr->next)
1912 {
1913 if (aux.isym == hash_ptr->type.isym)
1914 break;
1915 }
1916
1917 if (hash_ptr != (thash_t *) NULL && state == hash_yes)
1918 return hash_ptr->indx;
1919
1920 if (hash_ptr == (thash_t *) NULL)
1921 {
1922 hash_ptr = allocate_thash ();
1923 hash_ptr->next = hash_tbl[hi];
1924 hash_ptr->type = aux;
1925 hash_ptr->indx = vp->num_allocated;
1926 hash_tbl[hi] = hash_ptr;
1927 }
1928 }
1929
1930 /* Everything is set up, add the aux symbol. */
1931 if (vp->objects_last_page == vp->objects_per_page)
1932 add_varray_page (vp);
1933
1934 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1935 aux_ptr->type = aux_tir;
1936 aux_ptr->data = aux;
1937
1938 ret = vp->num_allocated++;
1939
1940 /* Add bitfield length if it exists.
1941
1942 NOTE: Mips documentation claims bitfield goes at the end of the
1943 AUX record, but the DECstation compiler emits it here.
1944 (This would only make a difference for enum bitfields.)
1945
1946 Also note: We use the last size given since gcc may emit 2
1947 for an enum bitfield. */
1948
1949 if (t->bitfield)
1950 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]);
1951
1952 /* Add tag information if needed. Structure, union, and enum
1953 references add 2 aux symbols: a [file index, symbol index]
1954 pointer to the structure type, and the current file index. */
1955
1956 if (t->basic_type == bt_Struct
1957 || t->basic_type == bt_Union
1958 || t->basic_type == bt_Enum)
1959 {
1960 symint_t file_index = t->tag_ptr->ifd;
1961 localsym_t *sym = t->tag_ptr->sym;
1962 forward_t *forward_ref = allocate_forward ();
1963
1964 if (sym != (localsym_t *) NULL)
1965 {
1966 forward_ref->next = sym->forward_ref;
1967 sym->forward_ref = forward_ref;
1968 }
1969 else
1970 {
1971 forward_ref->next = t->tag_ptr->forward_ref;
1972 t->tag_ptr->forward_ref = forward_ref;
1973 }
1974
1975 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil);
1976 forward_ref->index_ptr
1977 = &vp->last->datum->aux[vp->objects_last_page - 1];
1978
1979 (void) add_aux_sym_symint (file_index);
1980 forward_ref->ifd_ptr
1981 = &vp->last->datum->aux[vp->objects_last_page - 1];
1982 }
1983
1984 /* Add information about array bounds if they exist. */
1985 for (i = 0; i < t->num_dims; i++)
1986 {
1987 (void) add_aux_sym_rndx (ST_RFDESCAPE,
1988 cur_file_ptr->int_type);
1989
1990 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/
1991 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */
1992 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/
1993 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */
1994 ? 0
1995 : (t->sizes[i] * 8) / t->dimensions[i]);
1996 };
1997
1998 /* NOTE: Mips documentation claims that the bitfield width goes here.
1999 But it needs to be emitted earlier. */
2000
2001 return ret;
2002 }
2003
2004 /* Add a tag to the tag table (unless it already exists). */
2005
2006 static tag_t *
get_tag(const char * tag,localsym_t * sym,bt_t basic_type)2007 get_tag (const char *tag, /* tag name */
2008 localsym_t *sym, /* tag start block */
2009 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */)
2010 {
2011 shash_t *hash_ptr;
2012 const char *err;
2013 tag_t *tag_ptr;
2014
2015 if (cur_file_ptr == (efdr_t *) NULL)
2016 as_fatal (_("no current file pointer"));
2017
2018 hash_ptr = (shash_t *) hash_find (tag_hash, tag);
2019
2020 if (hash_ptr != (shash_t *) NULL
2021 && hash_ptr->tag_ptr != (tag_t *) NULL)
2022 {
2023 tag_ptr = hash_ptr->tag_ptr;
2024 if (sym != (localsym_t *) NULL)
2025 {
2026 tag_ptr->basic_type = basic_type;
2027 tag_ptr->ifd = cur_file_ptr->file_index;
2028 tag_ptr->sym = sym;
2029 }
2030 return tag_ptr;
2031 }
2032
2033 if (hash_ptr == (shash_t *) NULL)
2034 {
2035 char *perm;
2036
2037 perm = xstrdup (tag);
2038 hash_ptr = allocate_shash ();
2039 err = hash_insert (tag_hash, perm, (char *) hash_ptr);
2040 if (err)
2041 as_fatal (_("inserting \"%s\" into tag hash table: %s"),
2042 tag, err);
2043 hash_ptr->string = perm;
2044 }
2045
2046 tag_ptr = allocate_tag ();
2047 tag_ptr->forward_ref = (forward_t *) NULL;
2048 tag_ptr->hash_ptr = hash_ptr;
2049 tag_ptr->same_name = hash_ptr->tag_ptr;
2050 tag_ptr->basic_type = basic_type;
2051 tag_ptr->sym = sym;
2052 tag_ptr->ifd = ((sym == (localsym_t *) NULL)
2053 ? (symint_t) -1
2054 : cur_file_ptr->file_index);
2055 tag_ptr->same_block = cur_tag_head->first_tag;
2056
2057 cur_tag_head->first_tag = tag_ptr;
2058 hash_ptr->tag_ptr = tag_ptr;
2059
2060 return tag_ptr;
2061 }
2062
2063 /* Add an unknown {struct, union, enum} tag. */
2064
2065 static void
add_unknown_tag(tag_t * ptag)2066 add_unknown_tag (tag_t *ptag /* pointer to tag information */)
2067 {
2068 shash_t *hash_ptr = ptag->hash_ptr;
2069 char *name = hash_ptr->string;
2070 localsym_t *sym;
2071 forward_t **pf;
2072
2073 #ifdef ECOFF_DEBUG
2074 if (debug > 1)
2075 {
2076 char *agg_type = "{unknown aggregate type}";
2077 switch (ptag->basic_type)
2078 {
2079 case bt_Struct: agg_type = "struct"; break;
2080 case bt_Union: agg_type = "union"; break;
2081 case bt_Enum: agg_type = "enum"; break;
2082 default: break;
2083 }
2084
2085 fprintf (stderr, "unknown %s %.*s found\n", agg_type,
2086 hash_ptr->len, name_start);
2087 }
2088 #endif
2089
2090 sym = add_ecoff_symbol (name,
2091 st_Block,
2092 sc_Info,
2093 (symbolS *) NULL,
2094 (bfd_vma) 0,
2095 (symint_t) 0,
2096 (symint_t) 0);
2097
2098 (void) add_ecoff_symbol (name,
2099 st_End,
2100 sc_Info,
2101 (symbolS *) NULL,
2102 (bfd_vma) 0,
2103 (symint_t) 0,
2104 (symint_t) 0);
2105
2106 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next)
2107 ;
2108 *pf = ptag->forward_ref;
2109 }
2110
2111 /* Add a procedure to the current file's list of procedures, and record
2112 this is the current procedure. */
2113
2114 static void
add_procedure(char * func)2115 add_procedure (char *func /* func name */)
2116 {
2117 varray_t *vp;
2118 proc_t *new_proc_ptr;
2119 symbolS *sym;
2120
2121 #ifdef ECOFF_DEBUG
2122 if (debug)
2123 fputc ('\n', stderr);
2124 #endif
2125
2126 if (cur_file_ptr == (efdr_t *) NULL)
2127 as_fatal (_("no current file pointer"));
2128
2129 vp = &cur_file_ptr->procs;
2130
2131 if (vp->objects_last_page == vp->objects_per_page)
2132 add_varray_page (vp);
2133
2134 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++];
2135
2136 if (first_proc_ptr == (proc_t *) NULL)
2137 first_proc_ptr = new_proc_ptr;
2138
2139 vp->num_allocated++;
2140
2141 new_proc_ptr->pdr.isym = -1;
2142 new_proc_ptr->pdr.iline = -1;
2143 new_proc_ptr->pdr.lnLow = -1;
2144 new_proc_ptr->pdr.lnHigh = -1;
2145
2146 /* Set the BSF_FUNCTION flag for the symbol. */
2147 sym = symbol_find_or_make (func);
2148 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION;
2149
2150 /* Push the start of the function. */
2151 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text,
2152 sym, (bfd_vma) 0, (symint_t) 0,
2153 (symint_t) 0);
2154
2155 ++proc_cnt;
2156
2157 /* Fill in the linenos preceding the .ent, if any. */
2158 if (noproc_lineno != (lineno_list_t *) NULL)
2159 {
2160 lineno_list_t *l;
2161
2162 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next)
2163 l->proc = new_proc_ptr;
2164 *last_lineno_ptr = noproc_lineno;
2165 while (*last_lineno_ptr != NULL)
2166 {
2167 last_lineno = *last_lineno_ptr;
2168 last_lineno_ptr = &last_lineno->next;
2169 }
2170 noproc_lineno = (lineno_list_t *) NULL;
2171 }
2172 }
2173
2174 symbolS *
ecoff_get_cur_proc_sym(void)2175 ecoff_get_cur_proc_sym (void)
2176 {
2177 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL);
2178 }
2179
2180 /* Add a new filename, and set up all of the file relative
2181 virtual arrays (strings, symbols, aux syms, etc.). Record
2182 where the current file structure lives. */
2183
2184 static void
add_file(const char * file_name,int indx ATTRIBUTE_UNUSED,int fake)2185 add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake)
2186 {
2187 int first_ch;
2188 efdr_t *fil_ptr;
2189
2190 #ifdef ECOFF_DEBUG
2191 if (debug)
2192 fprintf (stderr, "\tfile\t%.*s\n", len, file_start);
2193 #endif
2194
2195 /* If the file name is NULL, then no .file symbol appeared, and we
2196 want to use the actual file name. */
2197 if (file_name == (const char *) NULL)
2198 {
2199 char *file;
2200
2201 if (first_file != (efdr_t *) NULL)
2202 as_fatal (_("fake .file after real one"));
2203 as_where (&file, (unsigned int *) NULL);
2204 file_name = (const char *) file;
2205
2206 /* Automatically generate ECOFF debugging information, since I
2207 think that's what other ECOFF assemblers do. We don't do
2208 this if we see a .file directive with a string, since that
2209 implies that some sort of debugging information is being
2210 provided. */
2211 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED)
2212 debug_type = DEBUG_ECOFF;
2213 }
2214 else if (debug_type == DEBUG_UNSPECIFIED)
2215 debug_type = DEBUG_NONE;
2216
2217 #ifndef NO_LISTING
2218 if (listing)
2219 listing_source_file (file_name);
2220 #endif
2221
2222 current_stabs_filename = file_name;
2223
2224 /* If we're creating stabs, then we don't actually make a new FDR.
2225 Instead, we just create a stabs symbol. */
2226 if (stabs_seen)
2227 {
2228 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2229 symbol_new ("L0\001", now_seg,
2230 (valueT) frag_now_fix (),
2231 frag_now),
2232 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL));
2233 return;
2234 }
2235
2236 first_ch = *file_name;
2237
2238 /* FIXME: We can't safely merge files which have line number
2239 information (fMerge will be zero in this case). Otherwise, we
2240 get incorrect line number debugging info. See for instance
2241 ecoff_build_lineno, which will end up setting all file->fdr.*
2242 fields multiple times, resulting in incorrect debug info. In
2243 order to make this work right, all line number and symbol info
2244 for the same source file has to be adjacent in the object file,
2245 so that a single file descriptor can be used to point to them.
2246 This would require maintaining file specific lists of line
2247 numbers and symbols for each file, so that they can be merged
2248 together (or output together) when two .file pseudo-ops are
2249 merged into one file descriptor. */
2250
2251 /* See if the file has already been created. */
2252 for (fil_ptr = first_file;
2253 fil_ptr != (efdr_t *) NULL;
2254 fil_ptr = fil_ptr->next_file)
2255 {
2256 if (first_ch == fil_ptr->name[0]
2257 && filename_cmp (file_name, fil_ptr->name) == 0
2258 && fil_ptr->fdr.fMerge)
2259 {
2260 cur_file_ptr = fil_ptr;
2261 if (! fake)
2262 cur_file_ptr->fake = 0;
2263 break;
2264 }
2265 }
2266
2267 /* If this is a new file, create it. */
2268 if (fil_ptr == (efdr_t *) NULL)
2269 {
2270 if (file_desc.objects_last_page == file_desc.objects_per_page)
2271 add_varray_page (&file_desc);
2272
2273 fil_ptr = cur_file_ptr =
2274 &file_desc.last->datum->file[file_desc.objects_last_page++];
2275 *fil_ptr = init_file;
2276
2277 fil_ptr->file_index = current_file_idx++;
2278 ++file_desc.num_allocated;
2279
2280 fil_ptr->fake = fake;
2281
2282 /* Allocate the string hash table. */
2283 fil_ptr->str_hash = hash_new ();
2284
2285 /* Make sure 0 byte in string table is null */
2286 add_string (&fil_ptr->strings,
2287 fil_ptr->str_hash,
2288 "",
2289 (shash_t **)0);
2290
2291 if (strlen (file_name) > PAGE_USIZE - 2)
2292 as_fatal (_("filename goes over one page boundary"));
2293
2294 /* Push the start of the filename. We assume that the filename
2295 will be stored at string offset 1. */
2296 (void) add_ecoff_symbol (file_name, st_File, sc_Text,
2297 (symbolS *) NULL, (bfd_vma) 0,
2298 (symint_t) 0, (symint_t) 0);
2299 fil_ptr->fdr.rss = 1;
2300 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1];
2301
2302 /* Update the linked list of file descriptors. */
2303 *last_file_ptr = fil_ptr;
2304 last_file_ptr = &fil_ptr->next_file;
2305
2306 /* Add void & int types to the file (void should be first to catch
2307 errant 0's within the index fields). */
2308 fil_ptr->void_type = add_aux_sym_tir (&void_type_info,
2309 hash_yes,
2310 &cur_file_ptr->thash_head[0]);
2311
2312 fil_ptr->int_type = add_aux_sym_tir (&int_type_info,
2313 hash_yes,
2314 &cur_file_ptr->thash_head[0]);
2315 }
2316 }
2317
2318 /* This function is called when the assembler notices a preprocessor
2319 directive switching to a new file. This will not happen in
2320 compiler output, only in hand coded assembler. */
2321
2322 void
ecoff_new_file(const char * name,int appfile ATTRIBUTE_UNUSED)2323 ecoff_new_file (const char *name, int appfile ATTRIBUTE_UNUSED)
2324 {
2325 if (cur_file_ptr != NULL && filename_cmp (cur_file_ptr->name, name) == 0)
2326 return;
2327 add_file (name, 0, 0);
2328
2329 /* This is a hand coded assembler file, so automatically turn on
2330 debugging information. */
2331 if (debug_type == DEBUG_UNSPECIFIED)
2332 debug_type = DEBUG_ECOFF;
2333 }
2334
2335 #ifdef ECOFF_DEBUG
2336
2337 /* Convert storage class to string. */
2338
2339 static char *
sc_to_string(storage_class)2340 sc_to_string (storage_class)
2341 sc_t storage_class;
2342 {
2343 switch (storage_class)
2344 {
2345 case sc_Nil: return "Nil,";
2346 case sc_Text: return "Text,";
2347 case sc_Data: return "Data,";
2348 case sc_Bss: return "Bss,";
2349 case sc_Register: return "Register,";
2350 case sc_Abs: return "Abs,";
2351 case sc_Undefined: return "Undefined,";
2352 case sc_CdbLocal: return "CdbLocal,";
2353 case sc_Bits: return "Bits,";
2354 case sc_CdbSystem: return "CdbSystem,";
2355 case sc_RegImage: return "RegImage,";
2356 case sc_Info: return "Info,";
2357 case sc_UserStruct: return "UserStruct,";
2358 case sc_SData: return "SData,";
2359 case sc_SBss: return "SBss,";
2360 case sc_RData: return "RData,";
2361 case sc_Var: return "Var,";
2362 case sc_Common: return "Common,";
2363 case sc_SCommon: return "SCommon,";
2364 case sc_VarRegister: return "VarRegister,";
2365 case sc_Variant: return "Variant,";
2366 case sc_SUndefined: return "SUndefined,";
2367 case sc_Init: return "Init,";
2368 case sc_Max: return "Max,";
2369 }
2370
2371 return "???,";
2372 }
2373
2374 #endif /* DEBUG */
2375
2376 #ifdef ECOFF_DEBUG
2377
2378 /* Convert symbol type to string. */
2379
2380 static char *
st_to_string(symbol_type)2381 st_to_string (symbol_type)
2382 st_t symbol_type;
2383 {
2384 switch (symbol_type)
2385 {
2386 case st_Nil: return "Nil,";
2387 case st_Global: return "Global,";
2388 case st_Static: return "Static,";
2389 case st_Param: return "Param,";
2390 case st_Local: return "Local,";
2391 case st_Label: return "Label,";
2392 case st_Proc: return "Proc,";
2393 case st_Block: return "Block,";
2394 case st_End: return "End,";
2395 case st_Member: return "Member,";
2396 case st_Typedef: return "Typedef,";
2397 case st_File: return "File,";
2398 case st_RegReloc: return "RegReloc,";
2399 case st_Forward: return "Forward,";
2400 case st_StaticProc: return "StaticProc,";
2401 case st_Constant: return "Constant,";
2402 case st_Str: return "String,";
2403 case st_Number: return "Number,";
2404 case st_Expr: return "Expr,";
2405 case st_Type: return "Type,";
2406 case st_Max: return "Max,";
2407 }
2408
2409 return "???,";
2410 }
2411
2412 #endif /* DEBUG */
2413
2414 /* Parse .begin directives which have a label as the first argument
2415 which gives the location of the start of the block. */
2416
2417 void
ecoff_directive_begin(int ignore ATTRIBUTE_UNUSED)2418 ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED)
2419 {
2420 char *name;
2421 char name_end;
2422
2423 if (cur_file_ptr == (efdr_t *) NULL)
2424 {
2425 as_warn (_(".begin directive without a preceding .file directive"));
2426 demand_empty_rest_of_line ();
2427 return;
2428 }
2429
2430 if (cur_proc_ptr == (proc_t *) NULL)
2431 {
2432 as_warn (_(".begin directive without a preceding .ent directive"));
2433 demand_empty_rest_of_line ();
2434 return;
2435 }
2436
2437 name = input_line_pointer;
2438 name_end = get_symbol_end ();
2439
2440 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text,
2441 symbol_find_or_make (name),
2442 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2443
2444 *input_line_pointer = name_end;
2445
2446 /* The line number follows, but we don't use it. */
2447 (void) get_absolute_expression ();
2448 demand_empty_rest_of_line ();
2449 }
2450
2451 /* Parse .bend directives which have a label as the first argument
2452 which gives the location of the end of the block. */
2453
2454 void
ecoff_directive_bend(int ignore ATTRIBUTE_UNUSED)2455 ecoff_directive_bend (int ignore ATTRIBUTE_UNUSED)
2456 {
2457 char *name;
2458 char name_end;
2459 symbolS *endsym;
2460
2461 if (cur_file_ptr == (efdr_t *) NULL)
2462 {
2463 as_warn (_(".bend directive without a preceding .file directive"));
2464 demand_empty_rest_of_line ();
2465 return;
2466 }
2467
2468 if (cur_proc_ptr == (proc_t *) NULL)
2469 {
2470 as_warn (_(".bend directive without a preceding .ent directive"));
2471 demand_empty_rest_of_line ();
2472 return;
2473 }
2474
2475 name = input_line_pointer;
2476 name_end = get_symbol_end ();
2477
2478 /* The value is the distance between the .bend directive and the
2479 corresponding symbol. We fill in the offset when we write out
2480 the symbol. */
2481 endsym = symbol_find (name);
2482 if (endsym == (symbolS *) NULL)
2483 as_warn (_(".bend directive names unknown symbol"));
2484 else
2485 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym,
2486 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2487
2488 *input_line_pointer = name_end;
2489
2490 /* The line number follows, but we don't use it. */
2491 (void) get_absolute_expression ();
2492 demand_empty_rest_of_line ();
2493 }
2494
2495 /* COFF debugging information is provided as a series of directives
2496 (.def, .scl, etc.). We build up information as we read the
2497 directives in the following static variables, and file it away when
2498 we reach the .endef directive. */
2499 static char *coff_sym_name;
2500 static type_info_t coff_type;
2501 static sc_t coff_storage_class;
2502 static st_t coff_symbol_typ;
2503 static int coff_is_function;
2504 static char *coff_tag;
2505 static valueT coff_value;
2506 static symbolS *coff_sym_value;
2507 static bfd_vma coff_sym_addend;
2508 static int coff_inside_enumeration;
2509
2510 /* Handle a .def directive: start defining a symbol. */
2511
2512 void
ecoff_directive_def(int ignore ATTRIBUTE_UNUSED)2513 ecoff_directive_def (int ignore ATTRIBUTE_UNUSED)
2514 {
2515 char *name;
2516 char name_end;
2517
2518 ecoff_debugging_seen = 1;
2519
2520 SKIP_WHITESPACE ();
2521
2522 name = input_line_pointer;
2523 name_end = get_symbol_end ();
2524
2525 if (coff_sym_name != (char *) NULL)
2526 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored"));
2527 else if (*name == '\0')
2528 as_warn (_("empty symbol name in .def; ignored"));
2529 else
2530 {
2531 if (coff_sym_name != (char *) NULL)
2532 free (coff_sym_name);
2533 if (coff_tag != (char *) NULL)
2534 free (coff_tag);
2535
2536 coff_sym_name = xstrdup (name);
2537 coff_type = type_info_init;
2538 coff_storage_class = sc_Nil;
2539 coff_symbol_typ = st_Nil;
2540 coff_is_function = 0;
2541 coff_tag = (char *) NULL;
2542 coff_value = 0;
2543 coff_sym_value = (symbolS *) NULL;
2544 coff_sym_addend = 0;
2545 }
2546
2547 *input_line_pointer = name_end;
2548
2549 demand_empty_rest_of_line ();
2550 }
2551
2552 /* Handle a .dim directive, used to give dimensions for an array. The
2553 arguments are comma separated numbers. mips-tfile assumes that
2554 there will not be more than 6 dimensions, and gdb won't read any
2555 more than that anyhow, so I will also make that assumption. */
2556
2557 void
ecoff_directive_dim(int ignore ATTRIBUTE_UNUSED)2558 ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED)
2559 {
2560 int dimens[N_TQ];
2561 int i;
2562
2563 if (coff_sym_name == (char *) NULL)
2564 {
2565 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored"));
2566 demand_empty_rest_of_line ();
2567 return;
2568 }
2569
2570 for (i = 0; i < N_TQ; i++)
2571 {
2572 SKIP_WHITESPACE ();
2573 dimens[i] = get_absolute_expression ();
2574 if (*input_line_pointer == ',')
2575 ++input_line_pointer;
2576 else
2577 {
2578 if (*input_line_pointer != '\n'
2579 && *input_line_pointer != ';')
2580 as_warn (_("badly formed .dim directive"));
2581 break;
2582 }
2583 }
2584
2585 if (i == N_TQ)
2586 --i;
2587
2588 /* The dimensions are stored away in reverse order. */
2589 for (; i >= 0; i--)
2590 {
2591 if (coff_type.num_dims >= N_TQ)
2592 {
2593 as_warn (_("too many .dim entries"));
2594 break;
2595 }
2596 coff_type.dimensions[coff_type.num_dims] = dimens[i];
2597 ++coff_type.num_dims;
2598 }
2599
2600 demand_empty_rest_of_line ();
2601 }
2602
2603 /* Handle a .scl directive, which sets the COFF storage class of the
2604 symbol. */
2605
2606 void
ecoff_directive_scl(int ignore ATTRIBUTE_UNUSED)2607 ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED)
2608 {
2609 long val;
2610
2611 if (coff_sym_name == (char *) NULL)
2612 {
2613 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored"));
2614 demand_empty_rest_of_line ();
2615 return;
2616 }
2617
2618 val = get_absolute_expression ();
2619
2620 coff_symbol_typ = map_coff_sym_type[val];
2621 coff_storage_class = map_coff_storage[val];
2622
2623 demand_empty_rest_of_line ();
2624 }
2625
2626 /* Handle a .size directive. For some reason mips-tfile.c thinks that
2627 .size can have multiple arguments. We humor it, although gcc will
2628 never generate more than one argument. */
2629
2630 void
ecoff_directive_size(int ignore ATTRIBUTE_UNUSED)2631 ecoff_directive_size (int ignore ATTRIBUTE_UNUSED)
2632 {
2633 int sizes[N_TQ];
2634 int i;
2635
2636 if (coff_sym_name == (char *) NULL)
2637 {
2638 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored"));
2639 demand_empty_rest_of_line ();
2640 return;
2641 }
2642
2643 for (i = 0; i < N_TQ; i++)
2644 {
2645 SKIP_WHITESPACE ();
2646 sizes[i] = get_absolute_expression ();
2647 if (*input_line_pointer == ',')
2648 ++input_line_pointer;
2649 else
2650 {
2651 if (*input_line_pointer != '\n'
2652 && *input_line_pointer != ';')
2653 as_warn (_("badly formed .size directive"));
2654 break;
2655 }
2656 }
2657
2658 if (i == N_TQ)
2659 --i;
2660
2661 /* The sizes are stored away in reverse order. */
2662 for (; i >= 0; i--)
2663 {
2664 if (coff_type.num_sizes >= N_TQ)
2665 {
2666 as_warn (_("too many .size entries"));
2667 break;
2668 }
2669 coff_type.sizes[coff_type.num_sizes] = sizes[i];
2670 ++coff_type.num_sizes;
2671 }
2672
2673 demand_empty_rest_of_line ();
2674 }
2675
2676 /* Handle the .type directive, which gives the COFF type of the
2677 symbol. */
2678
2679 void
ecoff_directive_type(int ignore ATTRIBUTE_UNUSED)2680 ecoff_directive_type (int ignore ATTRIBUTE_UNUSED)
2681 {
2682 long val;
2683 tq_t *tq_ptr;
2684 tq_t *tq_shft;
2685
2686 if (coff_sym_name == (char *) NULL)
2687 {
2688 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored"));
2689 demand_empty_rest_of_line ();
2690 return;
2691 }
2692
2693 val = get_absolute_expression ();
2694
2695 coff_type.orig_type = BTYPE (val);
2696 coff_type.basic_type = map_coff_types[coff_type.orig_type];
2697
2698 tq_ptr = &coff_type.type_qualifiers[N_TQ];
2699 while (val & ~N_BTMASK)
2700 {
2701 if (tq_ptr == &coff_type.type_qualifiers[0])
2702 {
2703 /* FIXME: We could handle this by setting the continued bit.
2704 There would still be a limit: the .type argument can not
2705 be infinite. */
2706 as_warn (_("the type of %s is too complex; it will be simplified"),
2707 coff_sym_name);
2708 break;
2709 }
2710 if (ISPTR (val))
2711 *--tq_ptr = tq_Ptr;
2712 else if (ISFCN (val))
2713 *--tq_ptr = tq_Proc;
2714 else if (ISARY (val))
2715 *--tq_ptr = tq_Array;
2716 else
2717 as_fatal (_("Unrecognized .type argument"));
2718
2719 val = DECREF (val);
2720 }
2721
2722 tq_shft = &coff_type.type_qualifiers[0];
2723 while (tq_ptr != &coff_type.type_qualifiers[N_TQ])
2724 *tq_shft++ = *tq_ptr++;
2725
2726 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc)
2727 {
2728 /* If this is a function, ignore it, so that we don't get two
2729 entries (one from the .ent, and one for the .def that
2730 precedes it). Save the type information so that the end
2731 block can properly add it after the begin block index. For
2732 MIPS knows what reason, we must strip off the function type
2733 at this point. */
2734 coff_is_function = 1;
2735 tq_shft[-1] = tq_Nil;
2736 }
2737
2738 while (tq_shft != &coff_type.type_qualifiers[N_TQ])
2739 *tq_shft++ = tq_Nil;
2740
2741 demand_empty_rest_of_line ();
2742 }
2743
2744 /* Handle the .tag directive, which gives the name of a structure,
2745 union or enum. */
2746
2747 void
ecoff_directive_tag(int ignore ATTRIBUTE_UNUSED)2748 ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED)
2749 {
2750 char *name;
2751 char name_end;
2752
2753 if (coff_sym_name == (char *) NULL)
2754 {
2755 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored"));
2756 demand_empty_rest_of_line ();
2757 return;
2758 }
2759
2760 name = input_line_pointer;
2761 name_end = get_symbol_end ();
2762
2763 coff_tag = xstrdup (name);
2764
2765 *input_line_pointer = name_end;
2766
2767 demand_empty_rest_of_line ();
2768 }
2769
2770 /* Handle the .val directive, which gives the value of the symbol. It
2771 may be the name of a static or global symbol. */
2772
2773 void
ecoff_directive_val(int ignore ATTRIBUTE_UNUSED)2774 ecoff_directive_val (int ignore ATTRIBUTE_UNUSED)
2775 {
2776 expressionS exp;
2777
2778 if (coff_sym_name == (char *) NULL)
2779 {
2780 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored"));
2781 demand_empty_rest_of_line ();
2782 return;
2783 }
2784
2785 expression (&exp);
2786 if (exp.X_op != O_constant && exp.X_op != O_symbol)
2787 {
2788 as_bad (_(".val expression is too complex"));
2789 demand_empty_rest_of_line ();
2790 return;
2791 }
2792
2793 if (exp.X_op == O_constant)
2794 coff_value = exp.X_add_number;
2795 else
2796 {
2797 coff_sym_value = exp.X_add_symbol;
2798 coff_sym_addend = exp.X_add_number;
2799 }
2800
2801 demand_empty_rest_of_line ();
2802 }
2803
2804 /* Handle the .endef directive, which terminates processing of COFF
2805 debugging information for a symbol. */
2806
2807 void
ecoff_directive_endef(int ignore ATTRIBUTE_UNUSED)2808 ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED)
2809 {
2810 char *name;
2811 symint_t indx;
2812 localsym_t *sym;
2813
2814 demand_empty_rest_of_line ();
2815
2816 if (coff_sym_name == (char *) NULL)
2817 {
2818 as_warn (_(".endef pseudo-op used before .def; ignored"));
2819 return;
2820 }
2821
2822 name = coff_sym_name;
2823 coff_sym_name = (char *) NULL;
2824
2825 /* If the symbol is a static or external, we have already gotten the
2826 appropriate type and class, so make sure we don't override those
2827 values. This is needed because there are some type and classes
2828 that are not in COFF, such as short data, etc. */
2829 if (coff_sym_value != (symbolS *) NULL)
2830 {
2831 coff_symbol_typ = st_Nil;
2832 coff_storage_class = sc_Nil;
2833 }
2834
2835 coff_type.extra_sizes = coff_tag != (char *) NULL;
2836 if (coff_type.num_dims > 0)
2837 {
2838 int diff = coff_type.num_dims - coff_type.num_sizes;
2839 int i = coff_type.num_dims - 1;
2840 int j;
2841
2842 if (coff_type.num_sizes != 1 || diff < 0)
2843 {
2844 as_warn (_("bad COFF debugging information"));
2845 return;
2846 }
2847
2848 /* If this is an array, make sure the same number of dimensions
2849 and sizes were passed, creating extra sizes for multiply
2850 dimensioned arrays if not passed. */
2851 coff_type.extra_sizes = 0;
2852 if (diff)
2853 {
2854 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1;
2855 while (j >= 0)
2856 {
2857 coff_type.sizes[j] = (((j - diff) >= 0)
2858 ? coff_type.sizes[j - diff]
2859 : 0);
2860 j--;
2861 }
2862
2863 coff_type.num_sizes = i + 1;
2864 for (i--; i >= 0; i--)
2865 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0
2866 ? 0
2867 : (coff_type.sizes[i + 1]
2868 / coff_type.dimensions[i + 1]));
2869 }
2870 }
2871 else if (coff_symbol_typ == st_Member
2872 && coff_type.num_sizes - coff_type.extra_sizes == 1)
2873 {
2874 /* Is this a bitfield? This is indicated by a structure member
2875 having a size field that isn't an array. */
2876 coff_type.bitfield = 1;
2877 }
2878
2879 /* Except for enumeration members & begin/ending of scopes, put the
2880 type word in the aux. symbol table. */
2881 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End)
2882 indx = 0;
2883 else if (coff_inside_enumeration)
2884 indx = cur_file_ptr->void_type;
2885 else
2886 {
2887 if (coff_type.basic_type == bt_Struct
2888 || coff_type.basic_type == bt_Union
2889 || coff_type.basic_type == bt_Enum)
2890 {
2891 if (coff_tag == (char *) NULL)
2892 {
2893 as_warn (_("no tag specified for %s"), name);
2894 return;
2895 }
2896
2897 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL,
2898 coff_type.basic_type);
2899 }
2900
2901 if (coff_is_function)
2902 {
2903 last_func_type_info = coff_type;
2904 last_func_sym_value = coff_sym_value;
2905 return;
2906 }
2907
2908 indx = add_aux_sym_tir (&coff_type,
2909 hash_yes,
2910 &cur_file_ptr->thash_head[0]);
2911 }
2912
2913 /* Do any last minute adjustments that are necessary. */
2914 switch (coff_symbol_typ)
2915 {
2916 default:
2917 break;
2918
2919 /* For the beginning of structs, unions, and enumerations, the
2920 size info needs to be passed in the value field. */
2921 case st_Block:
2922 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes
2923 != 1)
2924 {
2925 as_warn (_("bad COFF debugging information"));
2926 return;
2927 }
2928 else
2929 coff_value = coff_type.sizes[0];
2930
2931 coff_inside_enumeration = (coff_type.orig_type == T_ENUM);
2932 break;
2933
2934 /* For the end of structs, unions, and enumerations, omit the
2935 name which is always ".eos". This needs to be done last, so
2936 that any error reporting above gives the correct name. */
2937 case st_End:
2938 free (name);
2939 name = (char *) NULL;
2940 coff_value = 0;
2941 coff_inside_enumeration = 0;
2942 break;
2943
2944 /* Members of structures and unions that aren't bitfields, need
2945 to adjust the value from a byte offset to a bit offset.
2946 Members of enumerations do not have the value adjusted, and
2947 can be distinguished by indx == indexNil. For enumerations,
2948 update the maximum enumeration value. */
2949 case st_Member:
2950 if (! coff_type.bitfield && ! coff_inside_enumeration)
2951 coff_value *= 8;
2952
2953 break;
2954 }
2955
2956 /* Add the symbol. */
2957 sym = add_ecoff_symbol (name,
2958 coff_symbol_typ,
2959 coff_storage_class,
2960 coff_sym_value,
2961 coff_sym_addend,
2962 (symint_t) coff_value,
2963 indx);
2964
2965 /* deal with struct, union, and enum tags. */
2966 if (coff_symbol_typ == st_Block)
2967 {
2968 /* Create or update the tag information. */
2969 tag_t *tag_ptr = get_tag (name,
2970 sym,
2971 coff_type.basic_type);
2972 forward_t **pf;
2973
2974 /* Remember any forward references. */
2975 for (pf = &sym->forward_ref;
2976 *pf != (forward_t *) NULL;
2977 pf = &(*pf)->next)
2978 ;
2979 *pf = tag_ptr->forward_ref;
2980 tag_ptr->forward_ref = (forward_t *) NULL;
2981 }
2982 }
2983
2984 /* Parse .end directives. */
2985
2986 void
ecoff_directive_end(int ignore ATTRIBUTE_UNUSED)2987 ecoff_directive_end (int ignore ATTRIBUTE_UNUSED)
2988 {
2989 char *name;
2990 char name_end;
2991 symbolS *ent;
2992
2993 if (cur_file_ptr == (efdr_t *) NULL)
2994 {
2995 as_warn (_(".end directive without a preceding .file directive"));
2996 demand_empty_rest_of_line ();
2997 return;
2998 }
2999
3000 if (cur_proc_ptr == (proc_t *) NULL)
3001 {
3002 as_warn (_(".end directive without a preceding .ent directive"));
3003 demand_empty_rest_of_line ();
3004 return;
3005 }
3006
3007 name = input_line_pointer;
3008 name_end = get_symbol_end ();
3009
3010 if (name == input_line_pointer)
3011 {
3012 as_warn (_(".end directive has no name"));
3013 *input_line_pointer = name_end;
3014 demand_empty_rest_of_line ();
3015 return;
3016 }
3017
3018 /* The value is the distance between the .end directive and the
3019 corresponding symbol. We create a fake symbol to hold the
3020 current location, and put in the offset when we write out the
3021 symbol. */
3022 ent = symbol_find (name);
3023 if (ent == (symbolS *) NULL)
3024 as_warn (_(".end directive names unknown symbol"));
3025 else
3026 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text,
3027 symbol_new ("L0\001", now_seg,
3028 (valueT) frag_now_fix (),
3029 frag_now),
3030 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
3031
3032 cur_proc_ptr = (proc_t *) NULL;
3033
3034 *input_line_pointer = name_end;
3035 demand_empty_rest_of_line ();
3036 }
3037
3038 /* Parse .ent directives. */
3039
3040 void
ecoff_directive_ent(int ignore ATTRIBUTE_UNUSED)3041 ecoff_directive_ent (int ignore ATTRIBUTE_UNUSED)
3042 {
3043 char *name;
3044 char name_end;
3045
3046 if (cur_file_ptr == (efdr_t *) NULL)
3047 add_file ((const char *) NULL, 0, 1);
3048
3049 if (cur_proc_ptr != (proc_t *) NULL)
3050 {
3051 as_warn (_("second .ent directive found before .end directive"));
3052 demand_empty_rest_of_line ();
3053 return;
3054 }
3055
3056 name = input_line_pointer;
3057 name_end = get_symbol_end ();
3058
3059 if (name == input_line_pointer)
3060 {
3061 as_warn (_(".ent directive has no name"));
3062 *input_line_pointer = name_end;
3063 demand_empty_rest_of_line ();
3064 return;
3065 }
3066
3067 add_procedure (name);
3068
3069 *input_line_pointer = name_end;
3070
3071 /* The .ent directive is sometimes followed by a number. I'm not
3072 really sure what the number means. I don't see any way to store
3073 the information in the PDR. The Irix 4 assembler seems to ignore
3074 the information. */
3075 SKIP_WHITESPACE ();
3076 if (*input_line_pointer == ',')
3077 {
3078 ++input_line_pointer;
3079 SKIP_WHITESPACE ();
3080 }
3081 if (ISDIGIT (*input_line_pointer)
3082 || *input_line_pointer == '-')
3083 (void) get_absolute_expression ();
3084
3085 demand_empty_rest_of_line ();
3086 }
3087
3088 /* Parse .extern directives. */
3089
3090 void
ecoff_directive_extern(int ignore ATTRIBUTE_UNUSED)3091 ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED)
3092 {
3093 char *name;
3094 int c;
3095 symbolS *symbolp;
3096 valueT size;
3097
3098 name = input_line_pointer;
3099 c = get_symbol_end ();
3100 symbolp = symbol_find_or_make (name);
3101 *input_line_pointer = c;
3102
3103 S_SET_EXTERNAL (symbolp);
3104
3105 if (*input_line_pointer == ',')
3106 ++input_line_pointer;
3107 size = get_absolute_expression ();
3108
3109 symbol_get_obj (symbolp)->ecoff_extern_size = size;
3110 }
3111
3112 /* Parse .file directives. */
3113
3114 void
ecoff_directive_file(int ignore ATTRIBUTE_UNUSED)3115 ecoff_directive_file (int ignore ATTRIBUTE_UNUSED)
3116 {
3117 int indx;
3118 char *name;
3119 int len;
3120
3121 if (cur_proc_ptr != (proc_t *) NULL)
3122 {
3123 as_warn (_("no way to handle .file within .ent/.end section"));
3124 demand_empty_rest_of_line ();
3125 return;
3126 }
3127
3128 indx = (int) get_absolute_expression ();
3129
3130 /* FIXME: we don't have to save the name here. */
3131 name = demand_copy_C_string (&len);
3132
3133 add_file (name, indx - 1, 0);
3134
3135 demand_empty_rest_of_line ();
3136 }
3137
3138 /* Parse .fmask directives. */
3139
3140 void
ecoff_directive_fmask(int ignore ATTRIBUTE_UNUSED)3141 ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED)
3142 {
3143 long val;
3144
3145 if (cur_proc_ptr == (proc_t *) NULL)
3146 {
3147 as_warn (_(".fmask outside of .ent"));
3148 demand_empty_rest_of_line ();
3149 return;
3150 }
3151
3152 if (get_absolute_expression_and_terminator (&val) != ',')
3153 {
3154 as_warn (_("bad .fmask directive"));
3155 --input_line_pointer;
3156 demand_empty_rest_of_line ();
3157 return;
3158 }
3159
3160 cur_proc_ptr->pdr.fregmask = val;
3161 cur_proc_ptr->pdr.fregoffset = get_absolute_expression ();
3162
3163 demand_empty_rest_of_line ();
3164 }
3165
3166 /* Parse .frame directives. */
3167
3168 void
ecoff_directive_frame(int ignore ATTRIBUTE_UNUSED)3169 ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED)
3170 {
3171 long val;
3172
3173 if (cur_proc_ptr == (proc_t *) NULL)
3174 {
3175 as_warn (_(".frame outside of .ent"));
3176 demand_empty_rest_of_line ();
3177 return;
3178 }
3179
3180 cur_proc_ptr->pdr.framereg = tc_get_register (1);
3181
3182 SKIP_WHITESPACE ();
3183 if (*input_line_pointer++ != ','
3184 || get_absolute_expression_and_terminator (&val) != ',')
3185 {
3186 as_warn (_("bad .frame directive"));
3187 --input_line_pointer;
3188 demand_empty_rest_of_line ();
3189 return;
3190 }
3191
3192 cur_proc_ptr->pdr.frameoffset = val;
3193
3194 cur_proc_ptr->pdr.pcreg = tc_get_register (0);
3195
3196 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to
3197 Sandro. I don't yet know where this value should be stored, if
3198 anywhere. Don't call demand_empty_rest_of_line (). */
3199 s_ignore (42);
3200 }
3201
3202 /* Parse .mask directives. */
3203
3204 void
ecoff_directive_mask(int ignore ATTRIBUTE_UNUSED)3205 ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED)
3206 {
3207 long val;
3208
3209 if (cur_proc_ptr == (proc_t *) NULL)
3210 {
3211 as_warn (_(".mask outside of .ent"));
3212 demand_empty_rest_of_line ();
3213 return;
3214 }
3215
3216 if (get_absolute_expression_and_terminator (&val) != ',')
3217 {
3218 as_warn (_("bad .mask directive"));
3219 --input_line_pointer;
3220 demand_empty_rest_of_line ();
3221 return;
3222 }
3223
3224 cur_proc_ptr->pdr.regmask = val;
3225 cur_proc_ptr->pdr.regoffset = get_absolute_expression ();
3226
3227 demand_empty_rest_of_line ();
3228 }
3229
3230 /* Parse .loc directives. */
3231
3232 void
ecoff_directive_loc(int ignore ATTRIBUTE_UNUSED)3233 ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED)
3234 {
3235 lineno_list_t *list;
3236 symint_t lineno;
3237
3238 if (cur_file_ptr == (efdr_t *) NULL)
3239 {
3240 as_warn (_(".loc before .file"));
3241 demand_empty_rest_of_line ();
3242 return;
3243 }
3244
3245 if (now_seg != text_section)
3246 {
3247 as_warn (_(".loc outside of .text"));
3248 demand_empty_rest_of_line ();
3249 return;
3250 }
3251
3252 /* Skip the file number. */
3253 SKIP_WHITESPACE ();
3254 get_absolute_expression ();
3255 SKIP_WHITESPACE ();
3256
3257 lineno = get_absolute_expression ();
3258
3259 #ifndef NO_LISTING
3260 if (listing)
3261 listing_source_line (lineno);
3262 #endif
3263
3264 /* If we're building stabs, then output a special label rather than
3265 ECOFF line number info. */
3266 if (stabs_seen)
3267 {
3268 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text,
3269 symbol_new ("L0\001", now_seg,
3270 (valueT) frag_now_fix (),
3271 frag_now),
3272 (bfd_vma) 0, 0, lineno);
3273 return;
3274 }
3275
3276 list = allocate_lineno_list ();
3277
3278 list->next = (lineno_list_t *) NULL;
3279 list->file = cur_file_ptr;
3280 list->proc = cur_proc_ptr;
3281 list->frag = frag_now;
3282 list->paddr = frag_now_fix ();
3283 list->lineno = lineno;
3284
3285 /* We don't want to merge files which have line numbers. */
3286 cur_file_ptr->fdr.fMerge = 0;
3287
3288 /* A .loc directive will sometimes appear before a .ent directive,
3289 which means that cur_proc_ptr will be NULL here. Arrange to
3290 patch this up. */
3291 if (cur_proc_ptr == (proc_t *) NULL)
3292 {
3293 lineno_list_t **pl;
3294
3295 pl = &noproc_lineno;
3296 while (*pl != (lineno_list_t *) NULL)
3297 pl = &(*pl)->next;
3298 *pl = list;
3299 }
3300 else
3301 {
3302 last_lineno = list;
3303 *last_lineno_ptr = list;
3304 last_lineno_ptr = &list->next;
3305 }
3306 }
3307
3308 /* The MIPS assembler sometimes inserts nop instructions in the
3309 instruction stream. When this happens, we must patch up the .loc
3310 information so that it points to the instruction after the nop. */
3311
3312 void
ecoff_fix_loc(fragS * old_frag,unsigned long old_frag_offset)3313 ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset)
3314 {
3315 if (last_lineno != NULL
3316 && last_lineno->frag == old_frag
3317 && last_lineno->paddr == old_frag_offset)
3318 {
3319 last_lineno->frag = frag_now;
3320 last_lineno->paddr = frag_now_fix ();
3321 }
3322 }
3323
3324 /* Make sure the @stabs symbol is emitted. */
3325
3326 static void
mark_stabs(int ignore ATTRIBUTE_UNUSED)3327 mark_stabs (int ignore ATTRIBUTE_UNUSED)
3328 {
3329 if (! stabs_seen)
3330 {
3331 /* Add a dummy @stabs dymbol. */
3332 stabs_seen = 1;
3333 (void) add_ecoff_symbol (stabs_symbol, st_Nil, sc_Info,
3334 (symbolS *) NULL,
3335 (bfd_vma) 0, (symint_t) -1,
3336 ECOFF_MARK_STAB (0));
3337 }
3338 }
3339
3340 /* Parse .weakext directives. */
3341 #ifndef TC_MIPS
3342 /* For TC_MIPS use the version in tc-mips.c. */
3343 void
ecoff_directive_weakext(int ignore ATTRIBUTE_UNUSED)3344 ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED)
3345 {
3346 char *name;
3347 int c;
3348 symbolS *symbolP;
3349 expressionS exp;
3350
3351 name = input_line_pointer;
3352 c = get_symbol_end ();
3353 symbolP = symbol_find_or_make (name);
3354 *input_line_pointer = c;
3355
3356 SKIP_WHITESPACE ();
3357
3358 if (*input_line_pointer == ',')
3359 {
3360 if (S_IS_DEFINED (symbolP))
3361 {
3362 as_bad (_("symbol `%s' is already defined"),
3363 S_GET_NAME (symbolP));
3364 ignore_rest_of_line ();
3365 return;
3366 }
3367
3368 ++input_line_pointer;
3369 SKIP_WHITESPACE ();
3370 if (! is_end_of_line[(unsigned char) *input_line_pointer])
3371 {
3372 expression (&exp);
3373 if (exp.X_op != O_symbol)
3374 {
3375 as_bad (_("bad .weakext directive"));
3376 ignore_rest_of_line ();
3377 return;
3378 }
3379 symbol_set_value_expression (symbolP, &exp);
3380 }
3381 }
3382
3383 S_SET_WEAK (symbolP);
3384
3385 demand_empty_rest_of_line ();
3386 }
3387 #endif /* not TC_MIPS */
3388
3389 /* Handle .stabs directives. The actual parsing routine is done by a
3390 generic routine. This routine is called via OBJ_PROCESS_STAB.
3391 When this is called, input_line_pointer will be pointing at the
3392 value field of the stab.
3393
3394 .stabs directives have five fields:
3395 "string" a string, encoding the type information.
3396 code a numeric code, defined in <stab.h>
3397 0 a zero
3398 desc a zero or line number
3399 value a numeric value or an address.
3400
3401 If the value is relocatable, we transform this into:
3402 iss points as an index into string space
3403 value value from lookup of the name
3404 st st from lookup of the name
3405 sc sc from lookup of the name
3406 index code|CODE_MASK
3407
3408 If the value is not relocatable, we transform this into:
3409 iss points as an index into string space
3410 value value
3411 st st_Nil
3412 sc sc_Nil
3413 index code|CODE_MASK
3414
3415 .stabn directives have four fields (string is null):
3416 code a numeric code, defined in <stab.h>
3417 0 a zero
3418 desc a zero or a line number
3419 value a numeric value or an address. */
3420
3421 void
ecoff_stab(segT sec ATTRIBUTE_UNUSED,int what,const char * string,int type,int other,int desc)3422 ecoff_stab (segT sec ATTRIBUTE_UNUSED,
3423 int what,
3424 const char *string,
3425 int type,
3426 int other,
3427 int desc)
3428 {
3429 efdr_t *save_file_ptr = cur_file_ptr;
3430 symbolS *sym;
3431 symint_t value;
3432 bfd_vma addend;
3433 st_t st;
3434 sc_t sc;
3435 symint_t indx;
3436 localsym_t *hold = NULL;
3437
3438 ecoff_debugging_seen = 1;
3439
3440 /* We don't handle .stabd. */
3441 if (what != 's' && what != 'n')
3442 {
3443 as_bad (_(".stab%c is not supported"), what);
3444 return;
3445 }
3446
3447 /* A .stabn uses a null name, not an empty string. */
3448 if (what == 'n')
3449 string = NULL;
3450
3451 /* We ignore the other field. */
3452 if (other != 0)
3453 as_warn (_(".stab%c: ignoring non-zero other field"), what);
3454
3455 /* Make sure we have a current file. */
3456 if (cur_file_ptr == (efdr_t *) NULL)
3457 {
3458 add_file ((const char *) NULL, 0, 1);
3459 save_file_ptr = cur_file_ptr;
3460 }
3461
3462 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
3463 signal to gdb. */
3464 if (stabs_seen == 0)
3465 mark_stabs (0);
3466
3467 /* Line number stabs are handled differently, since they have two
3468 values, the line number and the address of the label. We use the
3469 index field (aka desc) to hold the line number, and the value
3470 field to hold the address. The symbol type is st_Label, which
3471 should be different from the other stabs, so that gdb can
3472 recognize it. */
3473 if (type == N_SLINE)
3474 {
3475 SYMR dummy_symr;
3476 char *name;
3477 char name_end;
3478
3479 #ifndef NO_LISTING
3480 if (listing)
3481 listing_source_line ((unsigned int) desc);
3482 #endif
3483
3484 dummy_symr.index = desc;
3485 if (dummy_symr.index != desc)
3486 {
3487 as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"),
3488 desc, what);
3489 return;
3490 }
3491
3492 name = input_line_pointer;
3493 name_end = get_symbol_end ();
3494
3495 sym = symbol_find_or_make (name);
3496 *input_line_pointer = name_end;
3497
3498 value = 0;
3499 addend = 0;
3500 st = st_Label;
3501 sc = sc_Text;
3502 indx = desc;
3503 }
3504 else
3505 {
3506 #ifndef NO_LISTING
3507 if (listing && (type == N_SO || type == N_SOL))
3508 listing_source_file (string);
3509 #endif
3510
3511 if (ISDIGIT (*input_line_pointer)
3512 || *input_line_pointer == '-'
3513 || *input_line_pointer == '+')
3514 {
3515 st = st_Nil;
3516 sc = sc_Nil;
3517 sym = (symbolS *) NULL;
3518 value = get_absolute_expression ();
3519 addend = 0;
3520 }
3521 else if (! is_name_beginner ((unsigned char) *input_line_pointer))
3522 {
3523 as_warn (_("illegal .stab%c directive, bad character"), what);
3524 return;
3525 }
3526 else
3527 {
3528 expressionS exp;
3529
3530 sc = sc_Nil;
3531 st = st_Nil;
3532
3533 expression (&exp);
3534 if (exp.X_op == O_constant)
3535 {
3536 sym = NULL;
3537 value = exp.X_add_number;
3538 addend = 0;
3539 }
3540 else if (exp.X_op == O_symbol)
3541 {
3542 sym = exp.X_add_symbol;
3543 value = 0;
3544 addend = exp.X_add_number;
3545 }
3546 else
3547 {
3548 sym = make_expr_symbol (&exp);
3549 value = 0;
3550 addend = 0;
3551 }
3552 }
3553
3554 indx = ECOFF_MARK_STAB (type);
3555 }
3556
3557 /* Don't store the stabs symbol we are creating as the type of the
3558 ECOFF symbol. We want to compute the type of the ECOFF symbol
3559 independently. */
3560 if (sym != (symbolS *) NULL)
3561 hold = symbol_get_obj (sym)->ecoff_symbol;
3562
3563 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx);
3564
3565 if (sym != (symbolS *) NULL)
3566 symbol_get_obj (sym)->ecoff_symbol = hold;
3567
3568 /* Restore normal file type. */
3569 cur_file_ptr = save_file_ptr;
3570 }
3571
3572 /* Frob an ECOFF symbol. Small common symbols go into a special
3573 .scommon section rather than bfd_com_section. */
3574
3575 void
ecoff_frob_symbol(symbolS * sym)3576 ecoff_frob_symbol (symbolS *sym)
3577 {
3578 if (S_IS_COMMON (sym)
3579 && S_GET_VALUE (sym) > 0
3580 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput))
3581 {
3582 static asection scom_section;
3583 static asymbol scom_symbol;
3584
3585 /* We must construct a fake section similar to bfd_com_section
3586 but with the name .scommon. */
3587 if (scom_section.name == NULL)
3588 {
3589 scom_section = *bfd_com_section_ptr;
3590 scom_section.name = ".scommon";
3591 scom_section.output_section = &scom_section;
3592 scom_section.symbol = &scom_symbol;
3593 scom_section.symbol_ptr_ptr = &scom_section.symbol;
3594 scom_symbol = *bfd_com_section_ptr->symbol;
3595 scom_symbol.name = ".scommon";
3596 scom_symbol.section = &scom_section;
3597 }
3598 S_SET_SEGMENT (sym, &scom_section);
3599 }
3600
3601 /* Double check weak symbols. */
3602 if (S_IS_WEAK (sym))
3603 {
3604 if (S_IS_COMMON (sym))
3605 as_bad (_("symbol `%s' can not be both weak and common"),
3606 S_GET_NAME (sym));
3607 }
3608 }
3609
3610 /* Add bytes to the symbolic information buffer. */
3611
3612 static char *
ecoff_add_bytes(char ** buf,char ** bufend,char * bufptr,unsigned long need)3613 ecoff_add_bytes (char **buf,
3614 char **bufend,
3615 char *bufptr,
3616 unsigned long need)
3617 {
3618 unsigned long at;
3619 unsigned long want;
3620
3621 at = bufptr - *buf;
3622 need -= *bufend - bufptr;
3623 if (need < PAGE_SIZE)
3624 need = PAGE_SIZE;
3625 want = (*bufend - *buf) + need;
3626 *buf = (char *) xrealloc (*buf, want);
3627 *bufend = *buf + want;
3628 return *buf + at;
3629 }
3630
3631 /* Adjust the symbolic information buffer to the alignment required
3632 for the ECOFF target debugging information. */
3633
3634 static unsigned long
ecoff_padding_adjust(const struct ecoff_debug_swap * backend,char ** buf,char ** bufend,unsigned long offset,char ** bufptrptr)3635 ecoff_padding_adjust (const struct ecoff_debug_swap *backend,
3636 char **buf,
3637 char **bufend,
3638 unsigned long offset,
3639 char **bufptrptr)
3640 {
3641 bfd_size_type align;
3642
3643 align = backend->debug_align;
3644 if ((offset & (align - 1)) != 0)
3645 {
3646 unsigned long add;
3647
3648 add = align - (offset & (align - 1));
3649 if ((unsigned long) (*bufend - (*buf + offset)) < add)
3650 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add);
3651 memset (*buf + offset, 0, add);
3652 offset += add;
3653 if (bufptrptr != (char **) NULL)
3654 *bufptrptr = *buf + offset;
3655 }
3656
3657 return offset;
3658 }
3659
3660 /* Build the line number information. */
3661
3662 static unsigned long
ecoff_build_lineno(const struct ecoff_debug_swap * backend,char ** buf,char ** bufend,unsigned long offset,long * linecntptr)3663 ecoff_build_lineno (const struct ecoff_debug_swap *backend,
3664 char **buf,
3665 char **bufend,
3666 unsigned long offset,
3667 long *linecntptr)
3668 {
3669 char *bufptr;
3670 lineno_list_t *l;
3671 lineno_list_t *last;
3672 efdr_t *file;
3673 proc_t *proc;
3674 unsigned long c;
3675 long iline;
3676 long totcount;
3677 lineno_list_t first;
3678 lineno_list_t *local_first_lineno = first_lineno;
3679
3680 if (linecntptr != (long *) NULL)
3681 *linecntptr = 0;
3682
3683 bufptr = *buf + offset;
3684
3685 file = (efdr_t *) NULL;
3686 proc = (proc_t *) NULL;
3687 last = (lineno_list_t *) NULL;
3688 c = offset;
3689 iline = 0;
3690 totcount = 0;
3691
3692 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to
3693 remove this code. */
3694 /* For some reason the address of the first procedure is ignored
3695 when reading line numbers. This doesn't matter if the address of
3696 the first procedure is 0, but when gcc is generating MIPS
3697 embedded PIC code, it will put strings in the .text section
3698 before the first procedure. We cope by inserting a dummy line if
3699 the address of the first procedure is not 0. Hopefully this
3700 won't screw things up too badly.
3701
3702 Don't do this for ECOFF assembly source line numbers. They work
3703 without this extra attention. */
3704 if (debug_type != DEBUG_ECOFF
3705 && first_proc_ptr != (proc_t *) NULL
3706 && local_first_lineno != (lineno_list_t *) NULL
3707 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym)
3708 + bfd_get_section_vma (stdoutput,
3709 S_GET_SEGMENT (first_proc_ptr->sym->as_sym)))
3710 != 0))
3711 {
3712 first.file = local_first_lineno->file;
3713 first.proc = local_first_lineno->proc;
3714 first.frag = &zero_address_frag;
3715 first.paddr = 0;
3716 first.lineno = 0;
3717
3718 first.next = local_first_lineno;
3719 local_first_lineno = &first;
3720 }
3721
3722 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next)
3723 {
3724 long count;
3725 long delta;
3726
3727 /* Get the offset to the memory address of the next line number
3728 (in words). Do this first, so that we can skip ahead to the
3729 next useful line number entry. */
3730 if (l->next == (lineno_list_t *) NULL)
3731 {
3732 /* We want a count of zero, but it will be decremented
3733 before it is used. */
3734 count = 1;
3735 }
3736 else if (l->next->frag->fr_address + l->next->paddr
3737 > l->frag->fr_address + l->paddr)
3738 {
3739 count = ((l->next->frag->fr_address + l->next->paddr
3740 - (l->frag->fr_address + l->paddr))
3741 >> 2);
3742 }
3743 else
3744 {
3745 /* Don't change last, so we still get the right delta. */
3746 continue;
3747 }
3748
3749 if (l->file != file || l->proc != proc)
3750 {
3751 if (l->proc != proc && proc != (proc_t *) NULL)
3752 proc->pdr.lnHigh = last->lineno;
3753 if (l->file != file && file != (efdr_t *) NULL)
3754 {
3755 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3756 file->fdr.cline = totcount + count;
3757 if (linecntptr != (long *) NULL)
3758 *linecntptr += totcount + count;
3759 totcount = 0;
3760 }
3761
3762 if (l->file != file)
3763 {
3764 efdr_t *last_file = file;
3765
3766 file = l->file;
3767 if (last_file != (efdr_t *) NULL)
3768 file->fdr.ilineBase
3769 = last_file->fdr.ilineBase + last_file->fdr.cline;
3770 else
3771 file->fdr.ilineBase = 0;
3772 file->fdr.cbLineOffset = c;
3773 }
3774 if (l->proc != proc)
3775 {
3776 proc = l->proc;
3777 if (proc != (proc_t *) NULL)
3778 {
3779 proc->pdr.lnLow = l->lineno;
3780 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset;
3781 proc->pdr.iline = totcount;
3782 }
3783 }
3784
3785 last = (lineno_list_t *) NULL;
3786 }
3787
3788 totcount += count;
3789
3790 /* Get the offset to this line number. */
3791 if (last == (lineno_list_t *) NULL)
3792 delta = 0;
3793 else
3794 delta = l->lineno - last->lineno;
3795
3796 /* Put in the offset to this line number. */
3797 while (delta != 0)
3798 {
3799 int setcount;
3800
3801 /* 1 is added to each count read. */
3802 --count;
3803 /* We can only adjust the word count by up to 15 words at a
3804 time. */
3805 if (count <= 0x0f)
3806 {
3807 setcount = count;
3808 count = 0;
3809 }
3810 else
3811 {
3812 setcount = 0x0f;
3813 count -= 0x0f;
3814 }
3815 if (delta >= -7 && delta <= 7)
3816 {
3817 if (bufptr >= *bufend)
3818 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3819 *bufptr++ = setcount + (delta << 4);
3820 delta = 0;
3821 ++c;
3822 }
3823 else
3824 {
3825 int set;
3826
3827 if (*bufend - bufptr < 3)
3828 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3);
3829 *bufptr++ = setcount + (8 << 4);
3830 if (delta < -0x8000)
3831 {
3832 set = -0x8000;
3833 delta += 0x8000;
3834 }
3835 else if (delta > 0x7fff)
3836 {
3837 set = 0x7fff;
3838 delta -= 0x7fff;
3839 }
3840 else
3841 {
3842 set = delta;
3843 delta = 0;
3844 }
3845 *bufptr++ = set >> 8;
3846 *bufptr++ = set & 0xffff;
3847 c += 3;
3848 }
3849 }
3850
3851 /* Finish adjusting the count. */
3852 while (count > 0)
3853 {
3854 if (bufptr >= *bufend)
3855 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3856 /* 1 is added to each count read. */
3857 --count;
3858 if (count > 0x0f)
3859 {
3860 *bufptr++ = 0x0f;
3861 count -= 0x0f;
3862 }
3863 else
3864 {
3865 *bufptr++ = count;
3866 count = 0;
3867 }
3868 ++c;
3869 }
3870
3871 ++iline;
3872 last = l;
3873 }
3874
3875 if (proc != (proc_t *) NULL)
3876 proc->pdr.lnHigh = last->lineno;
3877 if (file != (efdr_t *) NULL)
3878 {
3879 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3880 file->fdr.cline = totcount;
3881 }
3882
3883 if (linecntptr != (long *) NULL)
3884 *linecntptr += totcount;
3885
3886 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr);
3887
3888 return c;
3889 }
3890
3891 /* Build and swap out the symbols. */
3892
3893 static unsigned long
ecoff_build_symbols(const struct ecoff_debug_swap * backend,char ** buf,char ** bufend,unsigned long offset)3894 ecoff_build_symbols (const struct ecoff_debug_swap *backend,
3895 char **buf,
3896 char **bufend,
3897 unsigned long offset)
3898 {
3899 const bfd_size_type external_sym_size = backend->external_sym_size;
3900 void (* const swap_sym_out) (bfd *, const SYMR *, void *)
3901 = backend->swap_sym_out;
3902 char *sym_out;
3903 long isym;
3904 vlinks_t *file_link;
3905
3906 sym_out = *buf + offset;
3907
3908 isym = 0;
3909
3910 /* The symbols are stored by file. */
3911 for (file_link = file_desc.first;
3912 file_link != (vlinks_t *) NULL;
3913 file_link = file_link->next)
3914 {
3915 int ifilesym;
3916 int fil_cnt;
3917 efdr_t *fil_ptr;
3918 efdr_t *fil_end;
3919
3920 if (file_link->next == (vlinks_t *) NULL)
3921 fil_cnt = file_desc.objects_last_page;
3922 else
3923 fil_cnt = file_desc.objects_per_page;
3924 fil_ptr = file_link->datum->file;
3925 fil_end = fil_ptr + fil_cnt;
3926 for (; fil_ptr < fil_end; fil_ptr++)
3927 {
3928 vlinks_t *sym_link;
3929
3930 fil_ptr->fdr.isymBase = isym;
3931 ifilesym = isym;
3932 for (sym_link = fil_ptr->symbols.first;
3933 sym_link != (vlinks_t *) NULL;
3934 sym_link = sym_link->next)
3935 {
3936 int sym_cnt;
3937 localsym_t *sym_ptr;
3938 localsym_t *sym_end;
3939
3940 if (sym_link->next == (vlinks_t *) NULL)
3941 sym_cnt = fil_ptr->symbols.objects_last_page;
3942 else
3943 sym_cnt = fil_ptr->symbols.objects_per_page;
3944 sym_ptr = sym_link->datum->sym;
3945 sym_end = sym_ptr + sym_cnt;
3946 for (; sym_ptr < sym_end; sym_ptr++)
3947 {
3948 int local;
3949 symbolS *as_sym;
3950 forward_t *f;
3951
3952 know (sym_ptr->file_ptr == fil_ptr);
3953
3954 /* If there is no associated gas symbol, then this
3955 is a pure debugging symbol. We have already
3956 added the name (if any) to fil_ptr->strings.
3957 Otherwise we must decide whether this is an
3958 external or a local symbol (actually, it may be
3959 both if the local provides additional debugging
3960 information for the external). */
3961 local = 1;
3962 as_sym = sym_ptr->as_sym;
3963 if (as_sym != (symbolS *) NULL)
3964 {
3965 symint_t indx;
3966
3967 /* The value of a block start symbol is the
3968 offset from the start of the procedure. For
3969 other symbols we just use the gas value (but
3970 we must offset it by the vma of the section,
3971 just as BFD does, because BFD will not see
3972 this value). */
3973 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block
3974 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text)
3975 {
3976 symbolS *begin_sym;
3977
3978 know (sym_ptr->proc_ptr != (proc_t *) NULL);
3979 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
3980 if (S_GET_SEGMENT (as_sym)
3981 != S_GET_SEGMENT (begin_sym))
3982 as_warn (_(".begin/.bend in different segments"));
3983 sym_ptr->ecoff_sym.asym.value =
3984 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
3985 }
3986 else
3987 sym_ptr->ecoff_sym.asym.value =
3988 (S_GET_VALUE (as_sym)
3989 + bfd_get_section_vma (stdoutput,
3990 S_GET_SEGMENT (as_sym))
3991 + sym_ptr->addend);
3992
3993 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym);
3994
3995 /* Set st_Proc to st_StaticProc for local
3996 functions. */
3997 if (sym_ptr->ecoff_sym.asym.st == st_Proc
3998 && S_IS_DEFINED (as_sym)
3999 && ! S_IS_EXTERNAL (as_sym)
4000 && ! S_IS_WEAK (as_sym))
4001 sym_ptr->ecoff_sym.asym.st = st_StaticProc;
4002
4003 /* Get the type and storage class based on where
4004 the symbol actually wound up. Traditionally,
4005 N_LBRAC and N_RBRAC are *not* relocated. */
4006 indx = sym_ptr->ecoff_sym.asym.index;
4007 if (sym_ptr->ecoff_sym.asym.st == st_Nil
4008 && sym_ptr->ecoff_sym.asym.sc == sc_Nil
4009 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4010 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC)
4011 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC))))
4012 {
4013 segT seg;
4014 const char *segname;
4015 st_t st;
4016 sc_t sc;
4017
4018 seg = S_GET_SEGMENT (as_sym);
4019 segname = segment_name (seg);
4020
4021 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4022 && (S_IS_EXTERNAL (as_sym)
4023 || S_IS_WEAK (as_sym)
4024 || ! S_IS_DEFINED (as_sym)))
4025 {
4026 if ((symbol_get_bfdsym (as_sym)->flags
4027 & BSF_FUNCTION) != 0)
4028 st = st_Proc;
4029 else
4030 st = st_Global;
4031 }
4032 else if (seg == text_section)
4033 st = st_Label;
4034 else
4035 st = st_Static;
4036
4037 if (! S_IS_DEFINED (as_sym))
4038 {
4039 valueT s;
4040
4041 s = symbol_get_obj (as_sym)->ecoff_extern_size;
4042 if (s == 0
4043 || s > bfd_get_gp_size (stdoutput))
4044 sc = sc_Undefined;
4045 else
4046 {
4047 sc = sc_SUndefined;
4048 sym_ptr->ecoff_sym.asym.value = s;
4049 }
4050 #ifdef S_SET_SIZE
4051 S_SET_SIZE (as_sym, s);
4052 #endif
4053 }
4054 else if (S_IS_COMMON (as_sym))
4055 {
4056 if (S_GET_VALUE (as_sym) > 0
4057 && (S_GET_VALUE (as_sym)
4058 <= bfd_get_gp_size (stdoutput)))
4059 sc = sc_SCommon;
4060 else
4061 sc = sc_Common;
4062 }
4063 else if (seg == text_section)
4064 sc = sc_Text;
4065 else if (seg == data_section)
4066 sc = sc_Data;
4067 else if (strcmp (segname, ".rdata") == 0
4068 || strcmp (segname, ".rodata") == 0)
4069 sc = sc_RData;
4070 else if (strcmp (segname, ".sdata") == 0)
4071 sc = sc_SData;
4072 else if (seg == bss_section)
4073 sc = sc_Bss;
4074 else if (strcmp (segname, ".sbss") == 0)
4075 sc = sc_SBss;
4076 else if (seg == bfd_abs_section_ptr)
4077 sc = sc_Abs;
4078 else
4079 {
4080 /* This must be a user named section.
4081 This is not possible in ECOFF, but it
4082 is in ELF. */
4083 sc = sc_Data;
4084 }
4085
4086 sym_ptr->ecoff_sym.asym.st = (int) st;
4087 sym_ptr->ecoff_sym.asym.sc = (int) sc;
4088 }
4089
4090 /* This is just an external symbol if it is
4091 outside a procedure and it has a type.
4092 FIXME: g++ will generate symbols which have
4093 different names in the debugging information
4094 than the actual symbol. Should we handle
4095 them here? */
4096 if ((S_IS_EXTERNAL (as_sym)
4097 || S_IS_WEAK (as_sym)
4098 || ! S_IS_DEFINED (as_sym))
4099 && sym_ptr->proc_ptr == (proc_t *) NULL
4100 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil
4101 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym))
4102 local = 0;
4103
4104 /* This is just an external symbol if it is a
4105 common symbol. */
4106 if (S_IS_COMMON (as_sym))
4107 local = 0;
4108
4109 /* If an st_end symbol has an associated gas
4110 symbol, then it is a local label created for
4111 a .bend or .end directive. Stabs line
4112 numbers will have \001 in the names. */
4113 if (local
4114 && sym_ptr->ecoff_sym.asym.st != st_End
4115 && strchr (sym_ptr->name, '\001') == 0)
4116 sym_ptr->ecoff_sym.asym.iss =
4117 add_string (&fil_ptr->strings,
4118 fil_ptr->str_hash,
4119 sym_ptr->name,
4120 (shash_t **) NULL);
4121 }
4122
4123 /* We now know the index of this symbol; fill in
4124 locations that have been waiting for that
4125 information. */
4126 if (sym_ptr->begin_ptr != (localsym_t *) NULL)
4127 {
4128 localsym_t *begin_ptr;
4129 st_t begin_type;
4130
4131 know (local);
4132 begin_ptr = sym_ptr->begin_ptr;
4133 know (begin_ptr->sym_index != -1);
4134 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index;
4135 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4136 sym_ptr->ecoff_sym.asym.iss =
4137 begin_ptr->ecoff_sym.asym.iss;
4138
4139 begin_type = (st_t) begin_ptr->ecoff_sym.asym.st;
4140 if (begin_type == st_File
4141 || begin_type == st_Block)
4142 {
4143 begin_ptr->ecoff_sym.asym.index =
4144 isym - ifilesym + 1;
4145 (*swap_sym_out) (stdoutput,
4146 &begin_ptr->ecoff_sym.asym,
4147 (*buf
4148 + offset
4149 + (begin_ptr->sym_index
4150 * external_sym_size)));
4151 }
4152 else
4153 {
4154 know (begin_ptr->index_ptr != (aux_t *) NULL);
4155 begin_ptr->index_ptr->data.isym =
4156 isym - ifilesym + 1;
4157 }
4158
4159 /* The value of the symbol marking the end of a
4160 procedure is the size of the procedure. The
4161 value of the symbol marking the end of a
4162 block is the offset from the start of the
4163 procedure to the block. */
4164 if (begin_type == st_Proc
4165 || begin_type == st_StaticProc)
4166 {
4167 know (as_sym != (symbolS *) NULL);
4168 know (begin_ptr->as_sym != (symbolS *) NULL);
4169 if (S_GET_SEGMENT (as_sym)
4170 != S_GET_SEGMENT (begin_ptr->as_sym))
4171 as_warn (_(".begin/.bend in different segments"));
4172 sym_ptr->ecoff_sym.asym.value =
4173 (S_GET_VALUE (as_sym)
4174 - S_GET_VALUE (begin_ptr->as_sym));
4175
4176 /* If the size is odd, this is probably a
4177 mips16 function; force it to be even. */
4178 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0)
4179 ++sym_ptr->ecoff_sym.asym.value;
4180
4181 #ifdef S_SET_SIZE
4182 S_SET_SIZE (begin_ptr->as_sym,
4183 sym_ptr->ecoff_sym.asym.value);
4184 #endif
4185 }
4186 else if (begin_type == st_Block
4187 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4188 {
4189 symbolS *begin_sym;
4190
4191 know (as_sym != (symbolS *) NULL);
4192 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4193 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4194 if (S_GET_SEGMENT (as_sym)
4195 != S_GET_SEGMENT (begin_sym))
4196 as_warn (_(".begin/.bend in different segments"));
4197 sym_ptr->ecoff_sym.asym.value =
4198 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4199 }
4200 }
4201
4202 for (f = sym_ptr->forward_ref;
4203 f != (forward_t *) NULL;
4204 f = f->next)
4205 {
4206 know (local);
4207 f->ifd_ptr->data.isym = fil_ptr->file_index;
4208 f->index_ptr->data.rndx.index = isym - ifilesym;
4209 }
4210
4211 if (local)
4212 {
4213 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size)
4214 sym_out = ecoff_add_bytes (buf, bufend,
4215 sym_out,
4216 external_sym_size);
4217 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym,
4218 sym_out);
4219 sym_out += external_sym_size;
4220
4221 sym_ptr->sym_index = isym;
4222
4223 if (sym_ptr->proc_ptr != (proc_t *) NULL
4224 && sym_ptr->proc_ptr->sym == sym_ptr)
4225 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym;
4226
4227 ++isym;
4228 }
4229
4230 /* Record the local symbol index and file number in
4231 case this is an external symbol. Note that this
4232 destroys the asym.index field. */
4233 if (as_sym != (symbolS *) NULL
4234 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr)
4235 {
4236 if ((sym_ptr->ecoff_sym.asym.st == st_Proc
4237 || sym_ptr->ecoff_sym.asym.st == st_StaticProc)
4238 && local)
4239 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1;
4240 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index;
4241
4242 /* Don't try to merge an FDR which has an
4243 external symbol attached to it. */
4244 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym))
4245 fil_ptr->fdr.fMerge = 0;
4246 }
4247 }
4248 }
4249 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase;
4250 }
4251 }
4252
4253 return offset + isym * external_sym_size;
4254 }
4255
4256 /* Swap out the procedure information. */
4257
4258 static unsigned long
ecoff_build_procs(const struct ecoff_debug_swap * backend,char ** buf,char ** bufend,unsigned long offset)4259 ecoff_build_procs (const struct ecoff_debug_swap *backend,
4260 char **buf,
4261 char **bufend,
4262 unsigned long offset)
4263 {
4264 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4265 void (* const swap_pdr_out) (bfd *, const PDR *, void *)
4266 = backend->swap_pdr_out;
4267 char *pdr_out;
4268 long iproc;
4269 vlinks_t *file_link;
4270
4271 pdr_out = *buf + offset;
4272
4273 iproc = 0;
4274
4275 /* The procedures are stored by file. */
4276 for (file_link = file_desc.first;
4277 file_link != (vlinks_t *) NULL;
4278 file_link = file_link->next)
4279 {
4280 int fil_cnt;
4281 efdr_t *fil_ptr;
4282 efdr_t *fil_end;
4283
4284 if (file_link->next == (vlinks_t *) NULL)
4285 fil_cnt = file_desc.objects_last_page;
4286 else
4287 fil_cnt = file_desc.objects_per_page;
4288 fil_ptr = file_link->datum->file;
4289 fil_end = fil_ptr + fil_cnt;
4290 for (; fil_ptr < fil_end; fil_ptr++)
4291 {
4292 vlinks_t *proc_link;
4293 int first;
4294
4295 fil_ptr->fdr.ipdFirst = iproc;
4296 first = 1;
4297 for (proc_link = fil_ptr->procs.first;
4298 proc_link != (vlinks_t *) NULL;
4299 proc_link = proc_link->next)
4300 {
4301 int prc_cnt;
4302 proc_t *proc_ptr;
4303 proc_t *proc_end;
4304
4305 if (proc_link->next == (vlinks_t *) NULL)
4306 prc_cnt = fil_ptr->procs.objects_last_page;
4307 else
4308 prc_cnt = fil_ptr->procs.objects_per_page;
4309 proc_ptr = proc_link->datum->proc;
4310 proc_end = proc_ptr + prc_cnt;
4311 for (; proc_ptr < proc_end; proc_ptr++)
4312 {
4313 symbolS *adr_sym;
4314 unsigned long adr;
4315
4316 adr_sym = proc_ptr->sym->as_sym;
4317 adr = (S_GET_VALUE (adr_sym)
4318 + bfd_get_section_vma (stdoutput,
4319 S_GET_SEGMENT (adr_sym)));
4320 if (first)
4321 {
4322 /* This code used to force the adr of the very
4323 first fdr to be 0. However, the native tools
4324 don't do that, and I can't remember why it
4325 used to work that way, so I took it out. */
4326 fil_ptr->fdr.adr = adr;
4327 first = 0;
4328 }
4329 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr;
4330 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size)
4331 pdr_out = ecoff_add_bytes (buf, bufend,
4332 pdr_out,
4333 external_pdr_size);
4334 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out);
4335 pdr_out += external_pdr_size;
4336 ++iproc;
4337 }
4338 }
4339 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst;
4340 }
4341 }
4342
4343 return offset + iproc * external_pdr_size;
4344 }
4345
4346 /* Swap out the aux information. */
4347
4348 static unsigned long
ecoff_build_aux(const struct ecoff_debug_swap * backend,char ** buf,char ** bufend,unsigned long offset)4349 ecoff_build_aux (const struct ecoff_debug_swap *backend,
4350 char **buf,
4351 char **bufend,
4352 unsigned long offset)
4353 {
4354 int bigendian;
4355 union aux_ext *aux_out;
4356 long iaux;
4357 vlinks_t *file_link;
4358
4359 bigendian = bfd_big_endian (stdoutput);
4360
4361 aux_out = (union aux_ext *) (*buf + offset);
4362
4363 iaux = 0;
4364
4365 /* The aux entries are stored by file. */
4366 for (file_link = file_desc.first;
4367 file_link != (vlinks_t *) NULL;
4368 file_link = file_link->next)
4369 {
4370 int fil_cnt;
4371 efdr_t *fil_ptr;
4372 efdr_t *fil_end;
4373
4374 if (file_link->next == (vlinks_t *) NULL)
4375 fil_cnt = file_desc.objects_last_page;
4376 else
4377 fil_cnt = file_desc.objects_per_page;
4378 fil_ptr = file_link->datum->file;
4379 fil_end = fil_ptr + fil_cnt;
4380 for (; fil_ptr < fil_end; fil_ptr++)
4381 {
4382 vlinks_t *aux_link;
4383
4384 fil_ptr->fdr.fBigendian = bigendian;
4385 fil_ptr->fdr.iauxBase = iaux;
4386 for (aux_link = fil_ptr->aux_syms.first;
4387 aux_link != (vlinks_t *) NULL;
4388 aux_link = aux_link->next)
4389 {
4390 int aux_cnt;
4391 aux_t *aux_ptr;
4392 aux_t *aux_end;
4393
4394 if (aux_link->next == (vlinks_t *) NULL)
4395 aux_cnt = fil_ptr->aux_syms.objects_last_page;
4396 else
4397 aux_cnt = fil_ptr->aux_syms.objects_per_page;
4398 aux_ptr = aux_link->datum->aux;
4399 aux_end = aux_ptr + aux_cnt;
4400 for (; aux_ptr < aux_end; aux_ptr++)
4401 {
4402 if ((unsigned long) (*bufend - (char *) aux_out)
4403 < sizeof (union aux_ext))
4404 aux_out = ((union aux_ext *)
4405 ecoff_add_bytes (buf, bufend,
4406 (char *) aux_out,
4407 sizeof (union aux_ext)));
4408 switch (aux_ptr->type)
4409 {
4410 case aux_tir:
4411 (*backend->swap_tir_out) (bigendian,
4412 &aux_ptr->data.ti,
4413 &aux_out->a_ti);
4414 break;
4415 case aux_rndx:
4416 (*backend->swap_rndx_out) (bigendian,
4417 &aux_ptr->data.rndx,
4418 &aux_out->a_rndx);
4419 break;
4420 case aux_dnLow:
4421 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow,
4422 aux_out);
4423 break;
4424 case aux_dnHigh:
4425 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh,
4426 aux_out);
4427 break;
4428 case aux_isym:
4429 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym,
4430 aux_out);
4431 break;
4432 case aux_iss:
4433 AUX_PUT_ISS (bigendian, aux_ptr->data.iss,
4434 aux_out);
4435 break;
4436 case aux_width:
4437 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width,
4438 aux_out);
4439 break;
4440 case aux_count:
4441 AUX_PUT_COUNT (bigendian, aux_ptr->data.count,
4442 aux_out);
4443 break;
4444 }
4445
4446 ++aux_out;
4447 ++iaux;
4448 }
4449 }
4450 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase;
4451 }
4452 }
4453
4454 return ecoff_padding_adjust (backend, buf, bufend,
4455 offset + iaux * sizeof (union aux_ext),
4456 (char **) NULL);
4457 }
4458
4459 /* Copy out the strings from a varray_t. This returns the number of
4460 bytes copied, rather than the new offset. */
4461
4462 static unsigned long
ecoff_build_strings(char ** buf,char ** bufend,unsigned long offset,varray_t * vp)4463 ecoff_build_strings (char **buf,
4464 char **bufend,
4465 unsigned long offset,
4466 varray_t *vp)
4467 {
4468 unsigned long istr;
4469 char *str_out;
4470 vlinks_t *str_link;
4471
4472 str_out = *buf + offset;
4473
4474 istr = 0;
4475
4476 for (str_link = vp->first;
4477 str_link != (vlinks_t *) NULL;
4478 str_link = str_link->next)
4479 {
4480 unsigned long str_cnt;
4481
4482 if (str_link->next == (vlinks_t *) NULL)
4483 str_cnt = vp->objects_last_page;
4484 else
4485 str_cnt = vp->objects_per_page;
4486
4487 if ((unsigned long)(*bufend - str_out) < str_cnt)
4488 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt);
4489
4490 memcpy (str_out, str_link->datum->byte, str_cnt);
4491 str_out += str_cnt;
4492 istr += str_cnt;
4493 }
4494
4495 return istr;
4496 }
4497
4498 /* Dump out the local strings. */
4499
4500 static unsigned long
ecoff_build_ss(const struct ecoff_debug_swap * backend,char ** buf,char ** bufend,unsigned long offset)4501 ecoff_build_ss (const struct ecoff_debug_swap *backend,
4502 char **buf,
4503 char **bufend,
4504 unsigned long offset)
4505 {
4506 long iss;
4507 vlinks_t *file_link;
4508
4509 iss = 0;
4510
4511 for (file_link = file_desc.first;
4512 file_link != (vlinks_t *) NULL;
4513 file_link = file_link->next)
4514 {
4515 int fil_cnt;
4516 efdr_t *fil_ptr;
4517 efdr_t *fil_end;
4518
4519 if (file_link->next == (vlinks_t *) NULL)
4520 fil_cnt = file_desc.objects_last_page;
4521 else
4522 fil_cnt = file_desc.objects_per_page;
4523 fil_ptr = file_link->datum->file;
4524 fil_end = fil_ptr + fil_cnt;
4525 for (; fil_ptr < fil_end; fil_ptr++)
4526 {
4527 long ss_cnt;
4528
4529 fil_ptr->fdr.issBase = iss;
4530 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss,
4531 &fil_ptr->strings);
4532 fil_ptr->fdr.cbSs = ss_cnt;
4533 iss += ss_cnt;
4534 }
4535 }
4536
4537 return ecoff_padding_adjust (backend, buf, bufend, offset + iss,
4538 (char **) NULL);
4539 }
4540
4541 /* Swap out the file descriptors. */
4542
4543 static unsigned long
ecoff_build_fdr(const struct ecoff_debug_swap * backend,char ** buf,char ** bufend,unsigned long offset)4544 ecoff_build_fdr (const struct ecoff_debug_swap *backend,
4545 char **buf,
4546 char **bufend,
4547 unsigned long offset)
4548 {
4549 const bfd_size_type external_fdr_size = backend->external_fdr_size;
4550 void (* const swap_fdr_out) (bfd *, const FDR *, void *)
4551 = backend->swap_fdr_out;
4552 long ifile;
4553 char *fdr_out;
4554 vlinks_t *file_link;
4555
4556 ifile = 0;
4557
4558 fdr_out = *buf + offset;
4559
4560 for (file_link = file_desc.first;
4561 file_link != (vlinks_t *) NULL;
4562 file_link = file_link->next)
4563 {
4564 int fil_cnt;
4565 efdr_t *fil_ptr;
4566 efdr_t *fil_end;
4567
4568 if (file_link->next == (vlinks_t *) NULL)
4569 fil_cnt = file_desc.objects_last_page;
4570 else
4571 fil_cnt = file_desc.objects_per_page;
4572 fil_ptr = file_link->datum->file;
4573 fil_end = fil_ptr + fil_cnt;
4574 for (; fil_ptr < fil_end; fil_ptr++)
4575 {
4576 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size)
4577 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out,
4578 external_fdr_size);
4579 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out);
4580 fdr_out += external_fdr_size;
4581 ++ifile;
4582 }
4583 }
4584
4585 return offset + ifile * external_fdr_size;
4586 }
4587
4588 /* Set up the external symbols. These are supposed to be handled by
4589 the backend. This routine just gets the right information and
4590 calls a backend function to deal with it. */
4591
4592 static void
ecoff_setup_ext(void)4593 ecoff_setup_ext (void)
4594 {
4595 symbolS *sym;
4596
4597 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4598 {
4599 if (symbol_get_obj (sym)->ecoff_symbol == NULL)
4600 continue;
4601
4602 /* If this is a local symbol, then force the fields to zero. */
4603 if (! S_IS_EXTERNAL (sym)
4604 && ! S_IS_WEAK (sym)
4605 && S_IS_DEFINED (sym))
4606 {
4607 struct localsym *lsym;
4608
4609 lsym = symbol_get_obj (sym)->ecoff_symbol;
4610 lsym->ecoff_sym.asym.value = 0;
4611 lsym->ecoff_sym.asym.st = (int) st_Nil;
4612 lsym->ecoff_sym.asym.sc = (int) sc_Nil;
4613 lsym->ecoff_sym.asym.index = indexNil;
4614 }
4615
4616 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym);
4617 }
4618 }
4619
4620 /* Build the ECOFF debugging information. */
4621
4622 unsigned long
ecoff_build_debug(HDRR * hdr,char ** bufp,const struct ecoff_debug_swap * backend)4623 ecoff_build_debug (HDRR *hdr,
4624 char **bufp,
4625 const struct ecoff_debug_swap *backend)
4626 {
4627 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4628 tag_t *ptag;
4629 tag_t *ptag_next;
4630 efdr_t *fil_ptr;
4631 int end_warning;
4632 efdr_t *hold_file_ptr;
4633 proc_t *hold_proc_ptr;
4634 symbolS *sym;
4635 char *buf;
4636 char *bufend;
4637 unsigned long offset;
4638
4639 /* Make sure we have a file. */
4640 if (first_file == (efdr_t *) NULL)
4641 add_file ((const char *) NULL, 0, 1);
4642
4643 /* Handle any top level tags. */
4644 for (ptag = top_tag_head->first_tag;
4645 ptag != (tag_t *) NULL;
4646 ptag = ptag_next)
4647 {
4648 if (ptag->forward_ref != (forward_t *) NULL)
4649 add_unknown_tag (ptag);
4650
4651 ptag_next = ptag->same_block;
4652 ptag->hash_ptr->tag_ptr = ptag->same_name;
4653 free_tag (ptag);
4654 }
4655
4656 free_thead (top_tag_head);
4657
4658 /* Look through the symbols. Add debugging information for each
4659 symbol that has not already received it. */
4660 hold_file_ptr = cur_file_ptr;
4661 hold_proc_ptr = cur_proc_ptr;
4662 cur_proc_ptr = (proc_t *) NULL;
4663 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4664 {
4665 if (symbol_get_obj (sym)->ecoff_symbol != NULL
4666 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL
4667 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0)
4668 continue;
4669
4670 cur_file_ptr = symbol_get_obj (sym)->ecoff_file;
4671 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym,
4672 (bfd_vma) 0, S_GET_VALUE (sym), indexNil);
4673 }
4674 cur_proc_ptr = hold_proc_ptr;
4675 cur_file_ptr = hold_file_ptr;
4676
4677 /* Output an ending symbol for all the files. We have to do this
4678 here for the last file, so we may as well do it for all of the
4679 files. */
4680 end_warning = 0;
4681 for (fil_ptr = first_file;
4682 fil_ptr != (efdr_t *) NULL;
4683 fil_ptr = fil_ptr->next_file)
4684 {
4685 cur_file_ptr = fil_ptr;
4686 while (cur_file_ptr->cur_scope != (scope_t *) NULL
4687 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL)
4688 {
4689 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev;
4690 if (! end_warning && ! cur_file_ptr->fake)
4691 {
4692 as_warn (_("missing .end or .bend at end of file"));
4693 end_warning = 1;
4694 }
4695 }
4696 if (cur_file_ptr->cur_scope != (scope_t *) NULL)
4697 (void) add_ecoff_symbol ((const char *) NULL,
4698 st_End, sc_Text,
4699 (symbolS *) NULL,
4700 (bfd_vma) 0,
4701 (symint_t) 0,
4702 (symint_t) 0);
4703 }
4704
4705 /* Build the symbolic information. */
4706 offset = 0;
4707 buf = (char *) xmalloc (PAGE_SIZE);
4708 bufend = buf + PAGE_SIZE;
4709
4710 /* Build the line number information. */
4711 hdr->cbLineOffset = offset;
4712 offset = ecoff_build_lineno (backend, &buf, &bufend, offset,
4713 &hdr->ilineMax);
4714 hdr->cbLine = offset - hdr->cbLineOffset;
4715
4716 /* We don't use dense numbers at all. */
4717 hdr->idnMax = 0;
4718 hdr->cbDnOffset = 0;
4719
4720 /* We can't build the PDR table until we have built the symbols,
4721 because a PDR contains a symbol index. However, we set aside
4722 space at this point. */
4723 hdr->ipdMax = proc_cnt;
4724 hdr->cbPdOffset = offset;
4725 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size)
4726 (void) ecoff_add_bytes (&buf, &bufend, buf + offset,
4727 proc_cnt * external_pdr_size);
4728 offset += proc_cnt * external_pdr_size;
4729
4730 /* Build the local symbols. */
4731 hdr->cbSymOffset = offset;
4732 offset = ecoff_build_symbols (backend, &buf, &bufend, offset);
4733 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size;
4734
4735 /* Building the symbols initializes the symbol index in the PDR's.
4736 Now we can swap out the PDR's. */
4737 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset);
4738
4739 /* We don't use optimization symbols. */
4740 hdr->ioptMax = 0;
4741 hdr->cbOptOffset = 0;
4742
4743 /* Swap out the auxiliary type information. */
4744 hdr->cbAuxOffset = offset;
4745 offset = ecoff_build_aux (backend, &buf, &bufend, offset);
4746 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext);
4747
4748 /* Copy out the local strings. */
4749 hdr->cbSsOffset = offset;
4750 offset = ecoff_build_ss (backend, &buf, &bufend, offset);
4751 hdr->issMax = offset - hdr->cbSsOffset;
4752
4753 /* We don't use relative file descriptors. */
4754 hdr->crfd = 0;
4755 hdr->cbRfdOffset = 0;
4756
4757 /* Swap out the file descriptors. */
4758 hdr->cbFdOffset = offset;
4759 offset = ecoff_build_fdr (backend, &buf, &bufend, offset);
4760 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size;
4761
4762 /* Set up the external symbols, which are handled by the BFD back
4763 end. */
4764 hdr->issExtMax = 0;
4765 hdr->cbSsExtOffset = 0;
4766 hdr->iextMax = 0;
4767 hdr->cbExtOffset = 0;
4768 ecoff_setup_ext ();
4769
4770 know ((offset & (backend->debug_align - 1)) == 0);
4771
4772 /* FIXME: This value should be determined from the .verstamp directive,
4773 with reasonable defaults in config files. */
4774 #ifdef TC_ALPHA
4775 hdr->vstamp = 0x030b;
4776 #else
4777 hdr->vstamp = 0x020b;
4778 #endif
4779
4780 *bufp = buf;
4781 return offset;
4782 }
4783
4784 /* Allocate a cluster of pages. */
4785
4786 #ifndef MALLOC_CHECK
4787
4788 static page_type *
allocate_cluster(unsigned long npages)4789 allocate_cluster (unsigned long npages)
4790 {
4791 page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE);
4792
4793 #ifdef ECOFF_DEBUG
4794 if (debug > 3)
4795 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value);
4796 #endif
4797
4798 memset (value, 0, npages * PAGE_USIZE);
4799
4800 return value;
4801 }
4802
4803 static page_type *cluster_ptr = NULL;
4804 static unsigned long pages_left = 0;
4805
4806 #endif /* MALLOC_CHECK */
4807
4808 /* Allocate one page (which is initialized to 0). */
4809
4810 static page_type *
allocate_page(void)4811 allocate_page (void)
4812 {
4813 #ifndef MALLOC_CHECK
4814
4815 if (pages_left == 0)
4816 {
4817 pages_left = MAX_CLUSTER_PAGES;
4818 cluster_ptr = allocate_cluster (pages_left);
4819 }
4820
4821 pages_left--;
4822 return cluster_ptr++;
4823
4824 #else /* MALLOC_CHECK */
4825
4826 page_type *ptr;
4827
4828 ptr = xmalloc (PAGE_USIZE);
4829 memset (ptr, 0, PAGE_USIZE);
4830 return ptr;
4831
4832 #endif /* MALLOC_CHECK */
4833 }
4834
4835 /* Allocate scoping information. */
4836
4837 static scope_t *
allocate_scope(void)4838 allocate_scope (void)
4839 {
4840 scope_t *ptr;
4841 static scope_t initial_scope;
4842
4843 #ifndef MALLOC_CHECK
4844
4845 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4846 if (ptr != (scope_t *) NULL)
4847 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free;
4848 else
4849 {
4850 int unallocated = alloc_counts[(int) alloc_type_scope].unallocated;
4851 page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page;
4852
4853 if (unallocated == 0)
4854 {
4855 unallocated = PAGE_SIZE / sizeof (scope_t);
4856 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page ();
4857 alloc_counts[(int) alloc_type_scope].total_pages++;
4858 }
4859
4860 ptr = &cur_page->scope[--unallocated];
4861 alloc_counts[(int) alloc_type_scope].unallocated = unallocated;
4862 }
4863
4864 #else
4865
4866 ptr = (scope_t *) xmalloc (sizeof (scope_t));
4867
4868 #endif
4869
4870 alloc_counts[(int) alloc_type_scope].total_alloc++;
4871 *ptr = initial_scope;
4872 return ptr;
4873 }
4874
4875 /* Free scoping information. */
4876
4877 static void
free_scope(scope_t * ptr)4878 free_scope (scope_t *ptr)
4879 {
4880 alloc_counts[(int) alloc_type_scope].total_free++;
4881
4882 #ifndef MALLOC_CHECK
4883 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4884 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr;
4885 #else
4886 free ((void *) ptr);
4887 #endif
4888 }
4889
4890 /* Allocate links for pages in a virtual array. */
4891
4892 static vlinks_t *
allocate_vlinks(void)4893 allocate_vlinks (void)
4894 {
4895 vlinks_t *ptr;
4896 static vlinks_t initial_vlinks;
4897
4898 #ifndef MALLOC_CHECK
4899
4900 int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated;
4901 page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page;
4902
4903 if (unallocated == 0)
4904 {
4905 unallocated = PAGE_SIZE / sizeof (vlinks_t);
4906 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page ();
4907 alloc_counts[(int) alloc_type_vlinks].total_pages++;
4908 }
4909
4910 ptr = &cur_page->vlinks[--unallocated];
4911 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated;
4912
4913 #else
4914
4915 ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t));
4916
4917 #endif
4918
4919 alloc_counts[(int) alloc_type_vlinks].total_alloc++;
4920 *ptr = initial_vlinks;
4921 return ptr;
4922 }
4923
4924 /* Allocate string hash buckets. */
4925
4926 static shash_t *
allocate_shash(void)4927 allocate_shash (void)
4928 {
4929 shash_t *ptr;
4930 static shash_t initial_shash;
4931
4932 #ifndef MALLOC_CHECK
4933
4934 int unallocated = alloc_counts[(int) alloc_type_shash].unallocated;
4935 page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page;
4936
4937 if (unallocated == 0)
4938 {
4939 unallocated = PAGE_SIZE / sizeof (shash_t);
4940 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page ();
4941 alloc_counts[(int) alloc_type_shash].total_pages++;
4942 }
4943
4944 ptr = &cur_page->shash[--unallocated];
4945 alloc_counts[(int) alloc_type_shash].unallocated = unallocated;
4946
4947 #else
4948
4949 ptr = (shash_t *) xmalloc (sizeof (shash_t));
4950
4951 #endif
4952
4953 alloc_counts[(int) alloc_type_shash].total_alloc++;
4954 *ptr = initial_shash;
4955 return ptr;
4956 }
4957
4958 /* Allocate type hash buckets. */
4959
4960 static thash_t *
allocate_thash(void)4961 allocate_thash (void)
4962 {
4963 thash_t *ptr;
4964 static thash_t initial_thash;
4965
4966 #ifndef MALLOC_CHECK
4967
4968 int unallocated = alloc_counts[(int) alloc_type_thash].unallocated;
4969 page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page;
4970
4971 if (unallocated == 0)
4972 {
4973 unallocated = PAGE_SIZE / sizeof (thash_t);
4974 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page ();
4975 alloc_counts[(int) alloc_type_thash].total_pages++;
4976 }
4977
4978 ptr = &cur_page->thash[--unallocated];
4979 alloc_counts[(int) alloc_type_thash].unallocated = unallocated;
4980
4981 #else
4982
4983 ptr = (thash_t *) xmalloc (sizeof (thash_t));
4984
4985 #endif
4986
4987 alloc_counts[(int) alloc_type_thash].total_alloc++;
4988 *ptr = initial_thash;
4989 return ptr;
4990 }
4991
4992 /* Allocate structure, union, or enum tag information. */
4993
4994 static tag_t *
allocate_tag(void)4995 allocate_tag (void)
4996 {
4997 tag_t *ptr;
4998 static tag_t initial_tag;
4999
5000 #ifndef MALLOC_CHECK
5001
5002 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
5003 if (ptr != (tag_t *) NULL)
5004 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free;
5005 else
5006 {
5007 int unallocated = alloc_counts[(int) alloc_type_tag].unallocated;
5008 page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page;
5009
5010 if (unallocated == 0)
5011 {
5012 unallocated = PAGE_SIZE / sizeof (tag_t);
5013 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page ();
5014 alloc_counts[(int) alloc_type_tag].total_pages++;
5015 }
5016
5017 ptr = &cur_page->tag[--unallocated];
5018 alloc_counts[(int) alloc_type_tag].unallocated = unallocated;
5019 }
5020
5021 #else
5022
5023 ptr = (tag_t *) xmalloc (sizeof (tag_t));
5024
5025 #endif
5026
5027 alloc_counts[(int) alloc_type_tag].total_alloc++;
5028 *ptr = initial_tag;
5029 return ptr;
5030 }
5031
5032 /* Free scoping information. */
5033
5034 static void
free_tag(tag_t * ptr)5035 free_tag (tag_t *ptr)
5036 {
5037 alloc_counts[(int) alloc_type_tag].total_free++;
5038
5039 #ifndef MALLOC_CHECK
5040 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
5041 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr;
5042 #else
5043 free ((PTR_T) ptr);
5044 #endif
5045 }
5046
5047 /* Allocate forward reference to a yet unknown tag. */
5048
5049 static forward_t *
allocate_forward(void)5050 allocate_forward (void)
5051 {
5052 forward_t *ptr;
5053 static forward_t initial_forward;
5054
5055 #ifndef MALLOC_CHECK
5056
5057 int unallocated = alloc_counts[(int) alloc_type_forward].unallocated;
5058 page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page;
5059
5060 if (unallocated == 0)
5061 {
5062 unallocated = PAGE_SIZE / sizeof (forward_t);
5063 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page ();
5064 alloc_counts[(int) alloc_type_forward].total_pages++;
5065 }
5066
5067 ptr = &cur_page->forward[--unallocated];
5068 alloc_counts[(int) alloc_type_forward].unallocated = unallocated;
5069
5070 #else
5071
5072 ptr = (forward_t *) xmalloc (sizeof (forward_t));
5073
5074 #endif
5075
5076 alloc_counts[(int) alloc_type_forward].total_alloc++;
5077 *ptr = initial_forward;
5078 return ptr;
5079 }
5080
5081 /* Allocate head of type hash list. */
5082
5083 static thead_t *
allocate_thead(void)5084 allocate_thead (void)
5085 {
5086 thead_t *ptr;
5087 static thead_t initial_thead;
5088
5089 #ifndef MALLOC_CHECK
5090
5091 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5092 if (ptr != (thead_t *) NULL)
5093 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free;
5094 else
5095 {
5096 int unallocated = alloc_counts[(int) alloc_type_thead].unallocated;
5097 page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page;
5098
5099 if (unallocated == 0)
5100 {
5101 unallocated = PAGE_SIZE / sizeof (thead_t);
5102 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page ();
5103 alloc_counts[(int) alloc_type_thead].total_pages++;
5104 }
5105
5106 ptr = &cur_page->thead[--unallocated];
5107 alloc_counts[(int) alloc_type_thead].unallocated = unallocated;
5108 }
5109
5110 #else
5111
5112 ptr = (thead_t *) xmalloc (sizeof (thead_t));
5113
5114 #endif
5115
5116 alloc_counts[(int) alloc_type_thead].total_alloc++;
5117 *ptr = initial_thead;
5118 return ptr;
5119 }
5120
5121 /* Free scoping information. */
5122
5123 static void
free_thead(thead_t * ptr)5124 free_thead (thead_t *ptr)
5125 {
5126 alloc_counts[(int) alloc_type_thead].total_free++;
5127
5128 #ifndef MALLOC_CHECK
5129 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5130 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr;
5131 #else
5132 free ((PTR_T) ptr);
5133 #endif
5134 }
5135
5136 static lineno_list_t *
allocate_lineno_list(void)5137 allocate_lineno_list (void)
5138 {
5139 lineno_list_t *ptr;
5140 static lineno_list_t initial_lineno_list;
5141
5142 #ifndef MALLOC_CHECK
5143
5144 int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated;
5145 page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page;
5146
5147 if (unallocated == 0)
5148 {
5149 unallocated = PAGE_SIZE / sizeof (lineno_list_t);
5150 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page ();
5151 alloc_counts[(int) alloc_type_lineno].total_pages++;
5152 }
5153
5154 ptr = &cur_page->lineno[--unallocated];
5155 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated;
5156
5157 #else
5158
5159 ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t));
5160
5161 #endif
5162
5163 alloc_counts[(int) alloc_type_lineno].total_alloc++;
5164 *ptr = initial_lineno_list;
5165 return ptr;
5166 }
5167
5168 void
ecoff_set_gp_prolog_size(int sz)5169 ecoff_set_gp_prolog_size (int sz)
5170 {
5171 if (cur_proc_ptr == 0)
5172 return;
5173
5174 cur_proc_ptr->pdr.gp_prologue = sz;
5175 if (cur_proc_ptr->pdr.gp_prologue != sz)
5176 {
5177 as_warn (_("GP prologue size exceeds field size, using 0 instead"));
5178 cur_proc_ptr->pdr.gp_prologue = 0;
5179 }
5180
5181 cur_proc_ptr->pdr.gp_used = 1;
5182 }
5183
5184 int
ecoff_no_current_file(void)5185 ecoff_no_current_file (void)
5186 {
5187 return cur_file_ptr == (efdr_t *) NULL;
5188 }
5189
5190 void
ecoff_generate_asm_lineno(void)5191 ecoff_generate_asm_lineno (void)
5192 {
5193 unsigned int lineno;
5194 char *filename;
5195 lineno_list_t *list;
5196
5197 as_where (&filename, &lineno);
5198
5199 if (current_stabs_filename == (char *) NULL
5200 || filename_cmp (current_stabs_filename, filename))
5201 add_file (filename, 0, 1);
5202
5203 list = allocate_lineno_list ();
5204
5205 list->next = (lineno_list_t *) NULL;
5206 list->file = cur_file_ptr;
5207 list->proc = cur_proc_ptr;
5208 list->frag = frag_now;
5209 list->paddr = frag_now_fix ();
5210 list->lineno = lineno;
5211
5212 /* We don't want to merge files which have line numbers. */
5213 cur_file_ptr->fdr.fMerge = 0;
5214
5215 /* A .loc directive will sometimes appear before a .ent directive,
5216 which means that cur_proc_ptr will be NULL here. Arrange to
5217 patch this up. */
5218 if (cur_proc_ptr == (proc_t *) NULL)
5219 {
5220 lineno_list_t **pl;
5221
5222 pl = &noproc_lineno;
5223 while (*pl != (lineno_list_t *) NULL)
5224 pl = &(*pl)->next;
5225 *pl = list;
5226 }
5227 else
5228 {
5229 last_lineno = list;
5230 *last_lineno_ptr = list;
5231 last_lineno_ptr = &list->next;
5232 }
5233 }
5234
5235 #else
5236
5237 void
ecoff_generate_asm_lineno(void)5238 ecoff_generate_asm_lineno (void)
5239 {
5240 }
5241
5242 #endif /* ECOFF_DEBUGGING */
5243