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gdb: add target_ops::supports_displaced_step
[deliverable/binutils-gdb.git] / gas / ecoff.c
1 /* ECOFF debugging support.
2 Copyright (C) 1993-2020 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
4 This file was put together by Ian Lance Taylor <ian@cygnus.com>. A
5 good deal of it comes directly from mips-tfile.c, by Michael
6 Meissner <meissner@osf.org>.
7
8 This file is part of GAS.
9
10 GAS is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3, or (at your option)
13 any later version.
14
15 GAS is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with GAS; see the file COPYING. If not, write to the Free
22 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23 02110-1301, USA. */
24
25 #include "as.h"
26
27 /* This file is compiled conditionally for those targets which use
28 ECOFF debugging information (e.g., MIPS ELF, Alpha ECOFF). */
29
30 #include "ecoff.h"
31
32 #ifdef ECOFF_DEBUGGING
33
34 #include "coff/internal.h"
35 #include "coff/symconst.h"
36 #include "aout/stab_gnu.h"
37 #include "filenames.h"
38 #include "safe-ctype.h"
39
40 /* Why isn't this in coff/sym.h? */
41 #define ST_RFDESCAPE 0xfff
42
43 /* This file constructs the information used by the ECOFF debugging
44 format. It just builds a large block of data.
45
46 We support both ECOFF style debugging and stabs debugging (the
47 stabs symbols are encapsulated in ECOFF symbols). This should let
48 us handle anything the compiler might throw at us. */
49
50 /* Here is a brief description of the MIPS ECOFF symbol table, by
51 Michael Meissner. The MIPS symbol table has the following pieces:
52
53 Symbolic Header
54 |
55 +-- Auxiliary Symbols
56 |
57 +-- Dense number table
58 |
59 +-- Optimizer Symbols
60 |
61 +-- External Strings
62 |
63 +-- External Symbols
64 |
65 +-- Relative file descriptors
66 |
67 +-- File table
68 |
69 +-- Procedure table
70 |
71 +-- Line number table
72 |
73 +-- Local Strings
74 |
75 +-- Local Symbols
76
77 The symbolic header points to each of the other tables, and also
78 contains the number of entries. It also contains a magic number
79 and MIPS compiler version number, such as 2.0.
80
81 The auxiliary table is a series of 32 bit integers, that are
82 referenced as needed from the local symbol table. Unlike standard
83 COFF, the aux. information does not follow the symbol that uses
84 it, but rather is a separate table. In theory, this would allow
85 the MIPS compilers to collapse duplicate aux. entries, but I've not
86 noticed this happening with the 1.31 compiler suite. The different
87 types of aux. entries are:
88
89 1) dnLow: Low bound on array dimension.
90
91 2) dnHigh: High bound on array dimension.
92
93 3) isym: Index to the local symbol which is the start of the
94 function for the end of function first aux. entry.
95
96 4) width: Width of structures and bitfields.
97
98 5) count: Count of ranges for variant part.
99
100 6) rndx: A relative index into the symbol table. The relative
101 index field has two parts: rfd which is a pointer into the
102 relative file index table or ST_RFDESCAPE which says the next
103 aux. entry is the file number, and index: which is the pointer
104 into the local symbol within a given file table. This is for
105 things like references to types defined in another file.
106
107 7) Type information: This is like the COFF type bits, except it
108 is 32 bits instead of 16; they still have room to add new
109 basic types; and they can handle more than 6 levels of array,
110 pointer, function, etc. Each type information field contains
111 the following structure members:
112
113 a) fBitfield: a bit that says this is a bitfield, and the
114 size in bits follows as the next aux. entry.
115
116 b) continued: a bit that says the next aux. entry is a
117 continuation of the current type information (in case
118 there are more than 6 levels of array/ptr/function).
119
120 c) bt: an integer containing the base type before adding
121 array, pointer, function, etc. qualifiers. The
122 current base types that I have documentation for are:
123
124 btNil -- undefined
125 btAdr -- address - integer same size as ptr
126 btChar -- character
127 btUChar -- unsigned character
128 btShort -- short
129 btUShort -- unsigned short
130 btInt -- int
131 btUInt -- unsigned int
132 btLong -- long
133 btULong -- unsigned long
134 btFloat -- float (real)
135 btDouble -- Double (real)
136 btStruct -- Structure (Record)
137 btUnion -- Union (variant)
138 btEnum -- Enumerated
139 btTypedef -- defined via a typedef isymRef
140 btRange -- subrange of int
141 btSet -- pascal sets
142 btComplex -- fortran complex
143 btDComplex -- fortran double complex
144 btIndirect -- forward or unnamed typedef
145 btFixedDec -- Fixed Decimal
146 btFloatDec -- Float Decimal
147 btString -- Varying Length Character String
148 btBit -- Aligned Bit String
149 btPicture -- Picture
150 btVoid -- Void (MIPS cc revision >= 2.00)
151
152 d) tq0 - tq5: type qualifier fields as needed. The
153 current type qualifier fields I have documentation for
154 are:
155
156 tqNil -- no more qualifiers
157 tqPtr -- pointer
158 tqProc -- procedure
159 tqArray -- array
160 tqFar -- 8086 far pointers
161 tqVol -- volatile
162
163 The dense number table is used in the front ends, and disappears by
164 the time the .o is created.
165
166 With the 1.31 compiler suite, the optimization symbols don't seem
167 to be used as far as I can tell.
168
169 The linker is the first entity that creates the relative file
170 descriptor table, and I believe it is used so that the individual
171 file table pointers don't have to be rewritten when the objects are
172 merged together into the program file.
173
174 Unlike COFF, the basic symbol & string tables are split into
175 external and local symbols/strings. The relocation information
176 only goes off of the external symbol table, and the debug
177 information only goes off of the internal symbol table. The
178 external symbols can have links to an appropriate file index and
179 symbol within the file to give it the appropriate type information.
180 Because of this, the external symbols are actually larger than the
181 internal symbols (to contain the link information), and contain the
182 local symbol structure as a member, though this member is not the
183 first member of the external symbol structure (!). I suspect this
184 split is to make strip easier to deal with.
185
186 Each file table has offsets for where the line numbers, local
187 strings, local symbols, and procedure table starts from within the
188 global tables, and the indices are reset to 0 for each of those
189 tables for the file.
190
191 The procedure table contains the binary equivalents of the .ent
192 (start of the function address), .frame (what register is the
193 virtual frame pointer, constant offset from the register to obtain
194 the VFP, and what register holds the return address), .mask/.fmask
195 (bitmask of saved registers, and where the first register is stored
196 relative to the VFP) assembler directives. It also contains the
197 low and high bounds of the line numbers if debugging is turned on.
198
199 The line number table is a compressed form of the normal COFF line
200 table. Each line number entry is either 1 or 3 bytes long, and
201 contains a signed delta from the previous line, and an unsigned
202 count of the number of instructions this statement takes.
203
204 The local symbol table contains the following fields:
205
206 1) iss: index to the local string table giving the name of the
207 symbol.
208
209 2) value: value of the symbol (address, register number, etc.).
210
211 3) st: symbol type. The current symbol types are:
212
213 stNil -- Nuthin' special
214 stGlobal -- external symbol
215 stStatic -- static
216 stParam -- procedure argument
217 stLocal -- local variable
218 stLabel -- label
219 stProc -- External Procedure
220 stBlock -- beginning of block
221 stEnd -- end (of anything)
222 stMember -- member (of anything)
223 stTypedef -- type definition
224 stFile -- file name
225 stRegReloc -- register relocation
226 stForward -- forwarding address
227 stStaticProc -- Static procedure
228 stConstant -- const
229
230 4) sc: storage class. The current storage classes are:
231
232 scText -- text symbol
233 scData -- initialized data symbol
234 scBss -- un-initialized data symbol
235 scRegister -- value of symbol is register number
236 scAbs -- value of symbol is absolute
237 scUndefined -- who knows?
238 scCdbLocal -- variable's value is IN se->va.??
239 scBits -- this is a bit field
240 scCdbSystem -- value is IN debugger's address space
241 scRegImage -- register value saved on stack
242 scInfo -- symbol contains debugger information
243 scUserStruct -- addr in struct user for current process
244 scSData -- load time only small data
245 scSBss -- load time only small common
246 scRData -- load time only read only data
247 scVar -- Var parameter (fortranpascal)
248 scCommon -- common variable
249 scSCommon -- small common
250 scVarRegister -- Var parameter in a register
251 scVariant -- Variant record
252 scSUndefined -- small undefined(external) data
253 scInit -- .init section symbol
254
255 5) index: pointer to a local symbol or aux. entry.
256
257 For the following program:
258
259 #include <stdio.h>
260
261 main(){
262 printf("Hello World!\n");
263 return 0;
264 }
265
266 Mips-tdump produces the following information:
267
268 Global file header:
269 magic number 0x162
270 # sections 2
271 timestamp 645311799, Wed Jun 13 17:16:39 1990
272 symbolic header offset 284
273 symbolic header size 96
274 optional header 56
275 flags 0x0
276
277 Symbolic header, magic number = 0x7009, vstamp = 1.31:
278
279 Info Offset Number Bytes
280 ==== ====== ====== =====
281
282 Line numbers 380 4 4 [13]
283 Dense numbers 0 0 0
284 Procedures Tables 384 1 52
285 Local Symbols 436 16 192
286 Optimization Symbols 0 0 0
287 Auxiliary Symbols 628 39 156
288 Local Strings 784 80 80
289 External Strings 864 144 144
290 File Tables 1008 2 144
291 Relative Files 0 0 0
292 External Symbols 1152 20 320
293
294 File #0, "hello2.c"
295
296 Name index = 1 Readin = No
297 Merge = No Endian = LITTLE
298 Debug level = G2 Language = C
299 Adr = 0x00000000
300
301 Info Start Number Size Offset
302 ==== ===== ====== ==== ======
303 Local strings 0 15 15 784
304 Local symbols 0 6 72 436
305 Line numbers 0 13 13 380
306 Optimization symbols 0 0 0 0
307 Procedures 0 1 52 384
308 Auxiliary symbols 0 14 56 628
309 Relative Files 0 0 0 0
310
311 There are 6 local symbols, starting at 436
312
313 Symbol# 0: "hello2.c"
314 End+1 symbol = 6
315 String index = 1
316 Storage class = Text Index = 6
317 Symbol type = File Value = 0
318
319 Symbol# 1: "main"
320 End+1 symbol = 5
321 Type = int
322 String index = 10
323 Storage class = Text Index = 12
324 Symbol type = Proc Value = 0
325
326 Symbol# 2: ""
327 End+1 symbol = 4
328 String index = 0
329 Storage class = Text Index = 4
330 Symbol type = Block Value = 8
331
332 Symbol# 3: ""
333 First symbol = 2
334 String index = 0
335 Storage class = Text Index = 2
336 Symbol type = End Value = 28
337
338 Symbol# 4: "main"
339 First symbol = 1
340 String index = 10
341 Storage class = Text Index = 1
342 Symbol type = End Value = 52
343
344 Symbol# 5: "hello2.c"
345 First symbol = 0
346 String index = 1
347 Storage class = Text Index = 0
348 Symbol type = End Value = 0
349
350 There are 14 auxiliary table entries, starting at 628.
351
352 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
353 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
354 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0]
355 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0]
356 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
357 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0]
358 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0]
359 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0]
360 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0]
361 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0]
362 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0]
363 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0]
364 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0]
365 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
366
367 There are 1 procedure descriptor entries, starting at 0.
368
369 Procedure descriptor 0:
370 Name index = 10 Name = "main"
371 .mask 0x80000000,-4 .fmask 0x00000000,0
372 .frame $29,24,$31
373 Opt. start = -1 Symbols start = 1
374 First line # = 3 Last line # = 6
375 Line Offset = 0 Address = 0x00000000
376
377 There are 4 bytes holding line numbers, starting at 380.
378 Line 3, delta 0, count 2
379 Line 4, delta 1, count 3
380 Line 5, delta 1, count 2
381 Line 6, delta 1, count 6
382
383 File #1, "/usr/include/stdio.h"
384
385 Name index = 1 Readin = No
386 Merge = Yes Endian = LITTLE
387 Debug level = G2 Language = C
388 Adr = 0x00000000
389
390 Info Start Number Size Offset
391 ==== ===== ====== ==== ======
392 Local strings 15 65 65 799
393 Local symbols 6 10 120 508
394 Line numbers 0 0 0 380
395 Optimization symbols 0 0 0 0
396 Procedures 1 0 0 436
397 Auxiliary symbols 14 25 100 684
398 Relative Files 0 0 0 0
399
400 There are 10 local symbols, starting at 442
401
402 Symbol# 0: "/usr/include/stdio.h"
403 End+1 symbol = 10
404 String index = 1
405 Storage class = Text Index = 10
406 Symbol type = File Value = 0
407
408 Symbol# 1: "_iobuf"
409 End+1 symbol = 9
410 String index = 22
411 Storage class = Info Index = 9
412 Symbol type = Block Value = 20
413
414 Symbol# 2: "_cnt"
415 Type = int
416 String index = 29
417 Storage class = Info Index = 4
418 Symbol type = Member Value = 0
419
420 Symbol# 3: "_ptr"
421 Type = ptr to char
422 String index = 34
423 Storage class = Info Index = 15
424 Symbol type = Member Value = 32
425
426 Symbol# 4: "_base"
427 Type = ptr to char
428 String index = 39
429 Storage class = Info Index = 16
430 Symbol type = Member Value = 64
431
432 Symbol# 5: "_bufsiz"
433 Type = int
434 String index = 45
435 Storage class = Info Index = 4
436 Symbol type = Member Value = 96
437
438 Symbol# 6: "_flag"
439 Type = short
440 String index = 53
441 Storage class = Info Index = 3
442 Symbol type = Member Value = 128
443
444 Symbol# 7: "_file"
445 Type = char
446 String index = 59
447 Storage class = Info Index = 2
448 Symbol type = Member Value = 144
449
450 Symbol# 8: ""
451 First symbol = 1
452 String index = 0
453 Storage class = Info Index = 1
454 Symbol type = End Value = 0
455
456 Symbol# 9: "/usr/include/stdio.h"
457 First symbol = 0
458 String index = 1
459 Storage class = Text Index = 0
460 Symbol type = End Value = 0
461
462 There are 25 auxiliary table entries, starting at 642.
463
464 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f]
465 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
466 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
467 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0]
468 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1]
469 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
470 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4]
471 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
472 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
473 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0]
474 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0]
475 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
476 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
477 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
478 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
479 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
480 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
481 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
482 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
483 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
484 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
485 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
486 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
487 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
488 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
489
490 There are 0 procedure descriptor entries, starting at 1.
491
492 There are 20 external symbols, starting at 1152
493
494 Symbol# 0: "_iob"
495 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 }
496 String index = 0 Ifd = 1
497 Storage class = Nil Index = 17
498 Symbol type = Global Value = 60
499
500 Symbol# 1: "fopen"
501 String index = 5 Ifd = 1
502 Storage class = Nil Index = 1048575
503 Symbol type = Proc Value = 0
504
505 Symbol# 2: "fdopen"
506 String index = 11 Ifd = 1
507 Storage class = Nil Index = 1048575
508 Symbol type = Proc Value = 0
509
510 Symbol# 3: "freopen"
511 String index = 18 Ifd = 1
512 Storage class = Nil Index = 1048575
513 Symbol type = Proc Value = 0
514
515 Symbol# 4: "popen"
516 String index = 26 Ifd = 1
517 Storage class = Nil Index = 1048575
518 Symbol type = Proc Value = 0
519
520 Symbol# 5: "tmpfile"
521 String index = 32 Ifd = 1
522 Storage class = Nil Index = 1048575
523 Symbol type = Proc Value = 0
524
525 Symbol# 6: "ftell"
526 String index = 40 Ifd = 1
527 Storage class = Nil Index = 1048575
528 Symbol type = Proc Value = 0
529
530 Symbol# 7: "rewind"
531 String index = 46 Ifd = 1
532 Storage class = Nil Index = 1048575
533 Symbol type = Proc Value = 0
534
535 Symbol# 8: "setbuf"
536 String index = 53 Ifd = 1
537 Storage class = Nil Index = 1048575
538 Symbol type = Proc Value = 0
539
540 Symbol# 9: "setbuffer"
541 String index = 60 Ifd = 1
542 Storage class = Nil Index = 1048575
543 Symbol type = Proc Value = 0
544
545 Symbol# 10: "setlinebuf"
546 String index = 70 Ifd = 1
547 Storage class = Nil Index = 1048575
548 Symbol type = Proc Value = 0
549
550 Symbol# 11: "fgets"
551 String index = 81 Ifd = 1
552 Storage class = Nil Index = 1048575
553 Symbol type = Proc Value = 0
554
555 Symbol# 12: "gets"
556 String index = 87 Ifd = 1
557 Storage class = Nil Index = 1048575
558 Symbol type = Proc Value = 0
559
560 Symbol# 13: "ctermid"
561 String index = 92 Ifd = 1
562 Storage class = Nil Index = 1048575
563 Symbol type = Proc Value = 0
564
565 Symbol# 14: "cuserid"
566 String index = 100 Ifd = 1
567 Storage class = Nil Index = 1048575
568 Symbol type = Proc Value = 0
569
570 Symbol# 15: "tempnam"
571 String index = 108 Ifd = 1
572 Storage class = Nil Index = 1048575
573 Symbol type = Proc Value = 0
574
575 Symbol# 16: "tmpnam"
576 String index = 116 Ifd = 1
577 Storage class = Nil Index = 1048575
578 Symbol type = Proc Value = 0
579
580 Symbol# 17: "sprintf"
581 String index = 123 Ifd = 1
582 Storage class = Nil Index = 1048575
583 Symbol type = Proc Value = 0
584
585 Symbol# 18: "main"
586 Type = int
587 String index = 131 Ifd = 0
588 Storage class = Text Index = 1
589 Symbol type = Proc Value = 0
590
591 Symbol# 19: "printf"
592 String index = 136 Ifd = 0
593 Storage class = Undefined Index = 1048575
594 Symbol type = Proc Value = 0
595
596 The following auxiliary table entries were unused:
597
598 #0 0 0x00000000 void
599 #2 8 0x00000008 char
600 #3 16 0x00000010 short
601 #4 24 0x00000018 int
602 #5 32 0x00000020 long
603 #6 40 0x00000028 float
604 #7 44 0x0000002c double
605 #8 12 0x0000000c unsigned char
606 #9 20 0x00000014 unsigned short
607 #10 28 0x0000001c unsigned int
608 #11 36 0x00000024 unsigned long
609 #14 0 0x00000000 void
610 #15 24 0x00000018 int
611 #19 32 0x00000020 long
612 #20 40 0x00000028 float
613 #21 44 0x0000002c double
614 #22 12 0x0000000c unsigned char
615 #23 20 0x00000014 unsigned short
616 #24 28 0x0000001c unsigned int
617 #25 36 0x00000024 unsigned long
618 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 }
619 */
620 \f
621 /* Redefinition of storage classes as an enumeration for better
622 debugging. */
623
624 typedef enum sc {
625 sc_Nil = scNil, /* no storage class */
626 sc_Text = scText, /* text symbol */
627 sc_Data = scData, /* initialized data symbol */
628 sc_Bss = scBss, /* un-initialized data symbol */
629 sc_Register = scRegister, /* value of symbol is register number */
630 sc_Abs = scAbs, /* value of symbol is absolute */
631 sc_Undefined = scUndefined, /* who knows? */
632 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */
633 sc_Bits = scBits, /* this is a bit field */
634 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */
635 sc_RegImage = scRegImage, /* register value saved on stack */
636 sc_Info = scInfo, /* symbol contains debugger information */
637 sc_UserStruct = scUserStruct, /* addr in struct user for current process */
638 sc_SData = scSData, /* load time only small data */
639 sc_SBss = scSBss, /* load time only small common */
640 sc_RData = scRData, /* load time only read only data */
641 sc_Var = scVar, /* Var parameter (fortran,pascal) */
642 sc_Common = scCommon, /* common variable */
643 sc_SCommon = scSCommon, /* small common */
644 sc_VarRegister = scVarRegister, /* Var parameter in a register */
645 sc_Variant = scVariant, /* Variant record */
646 sc_SUndefined = scSUndefined, /* small undefined(external) data */
647 sc_Init = scInit, /* .init section symbol */
648 sc_Max = scMax /* Max storage class+1 */
649 } sc_t;
650
651 /* Redefinition of symbol type. */
652
653 typedef enum st {
654 st_Nil = stNil, /* Nuthin' special */
655 st_Global = stGlobal, /* external symbol */
656 st_Static = stStatic, /* static */
657 st_Param = stParam, /* procedure argument */
658 st_Local = stLocal, /* local variable */
659 st_Label = stLabel, /* label */
660 st_Proc = stProc, /* " " Procedure */
661 st_Block = stBlock, /* beginning of block */
662 st_End = stEnd, /* end (of anything) */
663 st_Member = stMember, /* member (of anything - struct/union/enum */
664 st_Typedef = stTypedef, /* type definition */
665 st_File = stFile, /* file name */
666 st_RegReloc = stRegReloc, /* register relocation */
667 st_Forward = stForward, /* forwarding address */
668 st_StaticProc = stStaticProc, /* load time only static procs */
669 st_Constant = stConstant, /* const */
670 st_Str = stStr, /* string */
671 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */
672 st_Expr = stExpr, /* 2+2 vs. 4 */
673 st_Type = stType, /* post-coercion SER */
674 st_Max = stMax /* max type+1 */
675 } st_t;
676
677 /* Redefinition of type qualifiers. */
678
679 typedef enum tq {
680 tq_Nil = tqNil, /* bt is what you see */
681 tq_Ptr = tqPtr, /* pointer */
682 tq_Proc = tqProc, /* procedure */
683 tq_Array = tqArray, /* duh */
684 tq_Far = tqFar, /* longer addressing - 8086/8 land */
685 tq_Vol = tqVol, /* volatile */
686 tq_Max = tqMax /* Max type qualifier+1 */
687 } tq_t;
688
689 /* Redefinition of basic types. */
690
691 typedef enum bt {
692 bt_Nil = btNil, /* undefined */
693 bt_Adr = btAdr, /* address - integer same size as pointer */
694 bt_Char = btChar, /* character */
695 bt_UChar = btUChar, /* unsigned character */
696 bt_Short = btShort, /* short */
697 bt_UShort = btUShort, /* unsigned short */
698 bt_Int = btInt, /* int */
699 bt_UInt = btUInt, /* unsigned int */
700 bt_Long = btLong, /* long */
701 bt_ULong = btULong, /* unsigned long */
702 bt_Float = btFloat, /* float (real) */
703 bt_Double = btDouble, /* Double (real) */
704 bt_Struct = btStruct, /* Structure (Record) */
705 bt_Union = btUnion, /* Union (variant) */
706 bt_Enum = btEnum, /* Enumerated */
707 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */
708 bt_Range = btRange, /* subrange of int */
709 bt_Set = btSet, /* pascal sets */
710 bt_Complex = btComplex, /* fortran complex */
711 bt_DComplex = btDComplex, /* fortran double complex */
712 bt_Indirect = btIndirect, /* forward or unnamed typedef */
713 bt_FixedDec = btFixedDec, /* Fixed Decimal */
714 bt_FloatDec = btFloatDec, /* Float Decimal */
715 bt_String = btString, /* Varying Length Character String */
716 bt_Bit = btBit, /* Aligned Bit String */
717 bt_Picture = btPicture, /* Picture */
718 bt_Void = btVoid, /* Void */
719 bt_Max = btMax /* Max basic type+1 */
720 } bt_t;
721
722 #define N_TQ itqMax
723
724 /* States for whether to hash type or not. */
725 typedef enum hash_state {
726 hash_no = 0, /* Don't hash type */
727 hash_yes = 1, /* OK to hash type, or use previous hash */
728 hash_record = 2 /* OK to record hash, but don't use prev. */
729 } hash_state_t;
730
731 /* Types of different sized allocation requests. */
732 enum alloc_type {
733 alloc_type_none, /* dummy value */
734 alloc_type_scope, /* nested scopes linked list */
735 alloc_type_vlinks, /* glue linking pages in varray */
736 alloc_type_shash, /* string hash element */
737 alloc_type_thash, /* type hash element */
738 alloc_type_tag, /* struct/union/tag element */
739 alloc_type_forward, /* element to hold unknown tag */
740 alloc_type_thead, /* head of type hash list */
741 alloc_type_varray, /* general varray allocation */
742 alloc_type_lineno, /* line number list */
743 alloc_type_last /* last+1 element for array bounds */
744 };
745
746 /* Types of auxiliary type information. */
747 enum aux_type {
748 aux_tir, /* TIR type information */
749 aux_rndx, /* relative index into symbol table */
750 aux_dnLow, /* low dimension */
751 aux_dnHigh, /* high dimension */
752 aux_isym, /* symbol table index (end of proc) */
753 aux_iss, /* index into string space (not used) */
754 aux_width, /* width for non-default sized struc fields */
755 aux_count /* count of ranges for variant arm */
756 };
757 \f
758 /* Structures to provide n-number of virtual arrays, each of which can
759 grow linearly, and which are written in the object file as
760 sequential pages. On systems with a BSD malloc, the
761 MAX_CLUSTER_PAGES should be 1 less than a power of two, since
762 malloc adds it's overhead, and rounds up to the next power of 2.
763 Pages are linked together via a linked list.
764
765 If PAGE_SIZE is > 4096, the string length in the shash_t structure
766 can't be represented (assuming there are strings > 4096 bytes). */
767
768 /* FIXME: Yes, there can be such strings while emitting C++ class debug
769 info. Templates are the offender here, the test case in question
770 having a mangled class name of
771
772 t7rb_tree4Z4xkeyZt4pair2ZC4xkeyZt7xsocket1Z4UserZt9select1st2Zt4pair\
773 2ZC4xkeyZt7xsocket1Z4UserZ4xkeyZt4less1Z4xkey
774
775 Repeat that a couple dozen times while listing the class members and
776 you've got strings over 4k. Hack around this for now by increasing
777 the page size. A proper solution would abandon this structure scheme
778 certainly for very large strings, and possibly entirely. */
779
780 #ifndef PAGE_SIZE
781 #define PAGE_SIZE (8*1024) /* size of varray pages */
782 #endif
783
784 #define PAGE_USIZE ((unsigned long) PAGE_SIZE)
785
786 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */
787 #define MAX_CLUSTER_PAGES 63
788 #endif
789
790 /* Linked list connecting separate page allocations. */
791 typedef struct vlinks {
792 struct vlinks *prev; /* previous set of pages */
793 struct vlinks *next; /* next set of pages */
794 union page *datum; /* start of page */
795 unsigned long start_index; /* starting index # of page */
796 } vlinks_t;
797
798 /* Virtual array header. */
799 typedef struct varray {
800 vlinks_t *first; /* first page link */
801 vlinks_t *last; /* last page link */
802 unsigned long num_allocated; /* # objects allocated */
803 unsigned short object_size; /* size in bytes of each object */
804 unsigned short objects_per_page; /* # objects that can fit on a page */
805 unsigned short objects_last_page; /* # objects allocated on last page */
806 } varray_t;
807
808 #ifndef MALLOC_CHECK
809 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type))
810 #else
811 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE)
812 #endif
813
814 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \
815 (vlinks_t *)0, /* first */ \
816 (vlinks_t *)0, /* last */ \
817 0, /* num_allocated */ \
818 sizeof (type), /* object_size */ \
819 OBJECTS_PER_PAGE (type), /* objects_per_page */ \
820 OBJECTS_PER_PAGE (type), /* objects_last_page */ \
821 }
822
823 /* Master type for indexes within the symbol table. */
824 typedef unsigned long symint_t;
825
826 /* Linked list support for nested scopes (file, block, structure, etc.). */
827 typedef struct scope {
828 struct scope *prev; /* previous scope level */
829 struct scope *free; /* free list pointer */
830 struct localsym *lsym; /* pointer to local symbol node */
831 st_t type; /* type of the node */
832 } scope_t;
833
834 /* For a local symbol we store a gas symbol as well as the debugging
835 information we generate. The gas symbol will be NULL if this is
836 only a debugging symbol. */
837 typedef struct localsym {
838 const char *name; /* symbol name */
839 symbolS *as_sym; /* symbol as seen by gas */
840 bfd_vma addend; /* addend to as_sym value */
841 struct efdr *file_ptr; /* file pointer */
842 struct ecoff_proc *proc_ptr; /* proc pointer */
843 struct localsym *begin_ptr; /* symbol at start of block */
844 struct ecoff_aux *index_ptr; /* index value to be filled in */
845 struct forward *forward_ref; /* forward references to this symbol */
846 long sym_index; /* final symbol index */
847 EXTR ecoff_sym; /* ECOFF debugging symbol */
848 } localsym_t;
849
850 /* For aux information we keep the type and the data. */
851 typedef struct ecoff_aux {
852 enum aux_type type; /* aux type */
853 AUXU data; /* aux data */
854 } aux_t;
855
856 /* For a procedure we store the gas symbol as well as the PDR
857 debugging information. */
858 typedef struct ecoff_proc {
859 localsym_t *sym; /* associated symbol */
860 PDR pdr; /* ECOFF debugging info */
861 } proc_t;
862
863 /* Number of proc_t structures allocated. */
864 static unsigned long proc_cnt;
865
866 /* Forward reference list for tags referenced, but not yet defined. */
867 typedef struct forward {
868 struct forward *next; /* next forward reference */
869 struct forward *free; /* free list pointer */
870 aux_t *ifd_ptr; /* pointer to store file index */
871 aux_t *index_ptr; /* pointer to store symbol index */
872 } forward_t;
873
874 /* Linked list support for tags. The first tag in the list is always
875 the current tag for that block. */
876 typedef struct tag {
877 struct tag *free; /* free list pointer */
878 struct shash *hash_ptr; /* pointer to the hash table head */
879 struct tag *same_name; /* tag with same name in outer scope */
880 struct tag *same_block; /* next tag defined in the same block. */
881 struct forward *forward_ref; /* list of forward references */
882 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
883 symint_t ifd; /* file # tag defined in */
884 localsym_t *sym; /* file's local symbols */
885 } tag_t;
886
887 /* Head of a block's linked list of tags. */
888 typedef struct thead {
889 struct thead *prev; /* previous block */
890 struct thead *free; /* free list pointer */
891 struct tag *first_tag; /* first tag in block defined */
892 } thead_t;
893
894 /* Union containing pointers to each the small structures which are freed up. */
895 typedef union small_free {
896 scope_t *f_scope; /* scope structure */
897 thead_t *f_thead; /* tag head structure */
898 tag_t *f_tag; /* tag element structure */
899 forward_t *f_forward; /* forward tag reference */
900 } small_free_t;
901
902 /* String hash table entry. */
903
904 typedef struct shash {
905 char *string; /* string we are hashing */
906 symint_t indx; /* index within string table */
907 EXTR *esym_ptr; /* global symbol pointer */
908 localsym_t *sym_ptr; /* local symbol pointer */
909 localsym_t *end_ptr; /* symbol pointer to end block */
910 tag_t *tag_ptr; /* tag pointer */
911 proc_t *proc_ptr; /* procedure descriptor pointer */
912 } shash_t;
913
914 /* Type hash table support. The size of the hash table must fit
915 within a page with the other extended file descriptor information.
916 Because unique types which are hashed are fewer in number than
917 strings, we use a smaller hash value. */
918
919 #define HASHBITS 30
920
921 #ifndef THASH_SIZE
922 #define THASH_SIZE 113
923 #endif
924
925 typedef struct thash {
926 struct thash *next; /* next hash value */
927 AUXU type; /* type we are hashing */
928 symint_t indx; /* index within string table */
929 } thash_t;
930
931 /* Extended file descriptor that contains all of the support necessary
932 to add things to each file separately. */
933 typedef struct efdr {
934 FDR fdr; /* File header to be written out */
935 FDR *orig_fdr; /* original file header */
936 char *name; /* filename */
937 int fake; /* whether this is faked .file */
938 symint_t void_type; /* aux. pointer to 'void' type */
939 symint_t int_type; /* aux. pointer to 'int' type */
940 scope_t *cur_scope; /* current nested scopes */
941 symint_t file_index; /* current file number */
942 int nested_scopes; /* # nested scopes */
943 varray_t strings; /* local strings */
944 varray_t symbols; /* local symbols */
945 varray_t procs; /* procedures */
946 varray_t aux_syms; /* auxiliary symbols */
947 struct efdr *next_file; /* next file descriptor */
948 /* string/type hash tables */
949 struct hash_control *str_hash; /* string hash table */
950 thash_t *thash_head[THASH_SIZE];
951 } efdr_t;
952
953 /* Pre-initialized extended file structure. */
954 static const efdr_t init_file = {
955 { /* FDR structure */
956 0, /* adr: memory address of beginning of file */
957 0, /* rss: file name (of source, if known) */
958 0, /* issBase: file's string space */
959 0, /* cbSs: number of bytes in the ss */
960 0, /* isymBase: beginning of symbols */
961 0, /* csym: count file's of symbols */
962 0, /* ilineBase: file's line symbols */
963 0, /* cline: count of file's line symbols */
964 0, /* ioptBase: file's optimization entries */
965 0, /* copt: count of file's optimization entries */
966 0, /* ipdFirst: start of procedures for this file */
967 0, /* cpd: count of procedures for this file */
968 0, /* iauxBase: file's auxiliary entries */
969 0, /* caux: count of file's auxiliary entries */
970 0, /* rfdBase: index into the file indirect table */
971 0, /* crfd: count file indirect entries */
972 langC, /* lang: language for this file */
973 1, /* fMerge: whether this file can be merged */
974 0, /* fReadin: true if read in (not just created) */
975 TARGET_BYTES_BIG_ENDIAN, /* fBigendian: if 1, compiled on big endian machine */
976 GLEVEL_2, /* glevel: level this file was compiled with */
977 0, /* reserved: reserved for future use */
978 0, /* cbLineOffset: byte offset from header for this file ln's */
979 0, /* cbLine: size of lines for this file */
980 },
981
982 (FDR *)0, /* orig_fdr: original file header pointer */
983 (char *)0, /* name: pointer to filename */
984 0, /* fake: whether this is a faked .file */
985 0, /* void_type: ptr to aux node for void type */
986 0, /* int_type: ptr to aux node for int type */
987 (scope_t *)0, /* cur_scope: current scope being processed */
988 0, /* file_index: current file # */
989 0, /* nested_scopes: # nested scopes */
990 INIT_VARRAY (char), /* strings: local string varray */
991 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */
992 INIT_VARRAY (proc_t), /* procs: procedure varray */
993 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */
994
995 (struct efdr *)0, /* next_file: next file structure */
996
997 (struct hash_control *)0, /* str_hash: string hash table */
998 { 0 }, /* thash_head: type hash table */
999 };
1000
1001 static efdr_t *first_file; /* first file descriptor */
1002 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */
1003
1004 /* Line number information is kept in a list until the assembly is
1005 finished. */
1006 typedef struct lineno_list {
1007 struct lineno_list *next; /* next element in list */
1008 efdr_t *file; /* file this line is in */
1009 proc_t *proc; /* procedure this line is in */
1010 fragS *frag; /* fragment this line number is in */
1011 unsigned long paddr; /* offset within fragment */
1012 long lineno; /* actual line number */
1013 } lineno_list_t;
1014
1015 static lineno_list_t *first_lineno;
1016 static lineno_list_t *last_lineno;
1017 static lineno_list_t **last_lineno_ptr = &first_lineno;
1018
1019 /* Sometimes there will be some .loc statements before a .ent. We
1020 keep them in this list so that we can fill in the procedure pointer
1021 after we see the .ent. */
1022 static lineno_list_t *noproc_lineno;
1023
1024 /* Union of various things that are held in pages. */
1025 typedef union page {
1026 char byte [ PAGE_SIZE ];
1027 unsigned char ubyte [ PAGE_SIZE ];
1028 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ];
1029 FDR ofile [ PAGE_SIZE / sizeof (FDR) ];
1030 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ];
1031 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ];
1032 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ];
1033 DNR dense [ PAGE_SIZE / sizeof (DNR) ];
1034 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ];
1035 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ];
1036 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ];
1037 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ];
1038 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ];
1039 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ];
1040 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ];
1041 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ];
1042 } page_type;
1043
1044 /* Structure holding allocation information for small sized structures. */
1045 typedef struct alloc_info {
1046 char *alloc_name; /* name of this allocation type (must be first) */
1047 page_type *cur_page; /* current page being allocated from */
1048 small_free_t free_list; /* current free list if any */
1049 int unallocated; /* number of elements unallocated on page */
1050 int total_alloc; /* total number of allocations */
1051 int total_free; /* total number of frees */
1052 int total_pages; /* total number of pages allocated */
1053 } alloc_info_t;
1054
1055 /* Type information collected together. */
1056 typedef struct type_info {
1057 bt_t basic_type; /* basic type */
1058 int orig_type; /* original COFF-based type */
1059 int num_tq; /* # type qualifiers */
1060 int num_dims; /* # dimensions */
1061 int num_sizes; /* # sizes */
1062 int extra_sizes; /* # extra sizes not tied with dims */
1063 tag_t * tag_ptr; /* tag pointer */
1064 int bitfield; /* symbol is a bitfield */
1065 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/
1066 symint_t dimensions [N_TQ]; /* dimensions for each array */
1067 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of
1068 struct/union/enum + bitfield size */
1069 } type_info_t;
1070
1071 /* Pre-initialized type_info struct. */
1072 static const type_info_t type_info_init = {
1073 bt_Nil, /* basic type */
1074 T_NULL, /* original COFF-based type */
1075 0, /* # type qualifiers */
1076 0, /* # dimensions */
1077 0, /* # sizes */
1078 0, /* sizes not tied with dims */
1079 NULL, /* ptr to tag */
1080 0, /* bitfield */
1081 { /* type qualifiers */
1082 tq_Nil,
1083 tq_Nil,
1084 tq_Nil,
1085 tq_Nil,
1086 tq_Nil,
1087 tq_Nil,
1088 },
1089 { /* dimensions */
1090 0,
1091 0,
1092 0,
1093 0,
1094 0,
1095 0
1096 },
1097 { /* sizes */
1098 0,
1099 0,
1100 0,
1101 0,
1102 0,
1103 0,
1104 0,
1105 0,
1106 },
1107 };
1108
1109 /* Global hash table for the tags table and global table for file
1110 descriptors. */
1111
1112 static varray_t file_desc = INIT_VARRAY (efdr_t);
1113
1114 static struct hash_control *tag_hash;
1115
1116 /* Static types for int and void. Also, remember the last function's
1117 type (which is set up when we encounter the declaration for the
1118 function, and used when the end block for the function is emitted. */
1119
1120 static type_info_t int_type_info;
1121 static type_info_t void_type_info;
1122 static type_info_t last_func_type_info;
1123 static symbolS *last_func_sym_value;
1124
1125 /* Convert COFF basic type to ECOFF basic type. The T_NULL type
1126 really should use bt_Void, but this causes the current ecoff GDB to
1127 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS
1128 2.0) doesn't understand it, even though the compiler generates it.
1129 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler
1130 suite, but for now go with what works.
1131
1132 It would make sense for the .type and .scl directives to use the
1133 ECOFF numbers directly, rather than using the COFF numbers and
1134 mapping them. Unfortunately, this is historically what mips-tfile
1135 expects, and changing gcc now would be a considerable pain (the
1136 native compiler generates debugging information internally, rather
1137 than via the assembler, so it will never use .type or .scl). */
1138
1139 static const bt_t map_coff_types[] = {
1140 bt_Nil, /* T_NULL */
1141 bt_Nil, /* T_ARG */
1142 bt_Char, /* T_CHAR */
1143 bt_Short, /* T_SHORT */
1144 bt_Int, /* T_INT */
1145 bt_Long, /* T_LONG */
1146 bt_Float, /* T_FLOAT */
1147 bt_Double, /* T_DOUBLE */
1148 bt_Struct, /* T_STRUCT */
1149 bt_Union, /* T_UNION */
1150 bt_Enum, /* T_ENUM */
1151 bt_Enum, /* T_MOE */
1152 bt_UChar, /* T_UCHAR */
1153 bt_UShort, /* T_USHORT */
1154 bt_UInt, /* T_UINT */
1155 bt_ULong /* T_ULONG */
1156 };
1157
1158 /* Convert COFF storage class to ECOFF storage class. */
1159 static const sc_t map_coff_storage[] = {
1160 sc_Nil, /* 0: C_NULL */
1161 sc_Abs, /* 1: C_AUTO auto var */
1162 sc_Undefined, /* 2: C_EXT external */
1163 sc_Data, /* 3: C_STAT static */
1164 sc_Register, /* 4: C_REG register */
1165 sc_Undefined, /* 5: C_EXTDEF ??? */
1166 sc_Text, /* 6: C_LABEL label */
1167 sc_Text, /* 7: C_ULABEL user label */
1168 sc_Info, /* 8: C_MOS member of struct */
1169 sc_Abs, /* 9: C_ARG argument */
1170 sc_Info, /* 10: C_STRTAG struct tag */
1171 sc_Info, /* 11: C_MOU member of union */
1172 sc_Info, /* 12: C_UNTAG union tag */
1173 sc_Info, /* 13: C_TPDEF typedef */
1174 sc_Data, /* 14: C_USTATIC ??? */
1175 sc_Info, /* 15: C_ENTAG enum tag */
1176 sc_Info, /* 16: C_MOE member of enum */
1177 sc_Register, /* 17: C_REGPARM register parameter */
1178 sc_Bits, /* 18; C_FIELD bitfield */
1179 sc_Nil, /* 19 */
1180 sc_Nil, /* 20 */
1181 sc_Nil, /* 21 */
1182 sc_Nil, /* 22 */
1183 sc_Nil, /* 23 */
1184 sc_Nil, /* 24 */
1185 sc_Nil, /* 25 */
1186 sc_Nil, /* 26 */
1187 sc_Nil, /* 27 */
1188 sc_Nil, /* 28 */
1189 sc_Nil, /* 29 */
1190 sc_Nil, /* 30 */
1191 sc_Nil, /* 31 */
1192 sc_Nil, /* 32 */
1193 sc_Nil, /* 33 */
1194 sc_Nil, /* 34 */
1195 sc_Nil, /* 35 */
1196 sc_Nil, /* 36 */
1197 sc_Nil, /* 37 */
1198 sc_Nil, /* 38 */
1199 sc_Nil, /* 39 */
1200 sc_Nil, /* 40 */
1201 sc_Nil, /* 41 */
1202 sc_Nil, /* 42 */
1203 sc_Nil, /* 43 */
1204 sc_Nil, /* 44 */
1205 sc_Nil, /* 45 */
1206 sc_Nil, /* 46 */
1207 sc_Nil, /* 47 */
1208 sc_Nil, /* 48 */
1209 sc_Nil, /* 49 */
1210 sc_Nil, /* 50 */
1211 sc_Nil, /* 51 */
1212 sc_Nil, /* 52 */
1213 sc_Nil, /* 53 */
1214 sc_Nil, /* 54 */
1215 sc_Nil, /* 55 */
1216 sc_Nil, /* 56 */
1217 sc_Nil, /* 57 */
1218 sc_Nil, /* 58 */
1219 sc_Nil, /* 59 */
1220 sc_Nil, /* 60 */
1221 sc_Nil, /* 61 */
1222 sc_Nil, /* 62 */
1223 sc_Nil, /* 63 */
1224 sc_Nil, /* 64 */
1225 sc_Nil, /* 65 */
1226 sc_Nil, /* 66 */
1227 sc_Nil, /* 67 */
1228 sc_Nil, /* 68 */
1229 sc_Nil, /* 69 */
1230 sc_Nil, /* 70 */
1231 sc_Nil, /* 71 */
1232 sc_Nil, /* 72 */
1233 sc_Nil, /* 73 */
1234 sc_Nil, /* 74 */
1235 sc_Nil, /* 75 */
1236 sc_Nil, /* 76 */
1237 sc_Nil, /* 77 */
1238 sc_Nil, /* 78 */
1239 sc_Nil, /* 79 */
1240 sc_Nil, /* 80 */
1241 sc_Nil, /* 81 */
1242 sc_Nil, /* 82 */
1243 sc_Nil, /* 83 */
1244 sc_Nil, /* 84 */
1245 sc_Nil, /* 85 */
1246 sc_Nil, /* 86 */
1247 sc_Nil, /* 87 */
1248 sc_Nil, /* 88 */
1249 sc_Nil, /* 89 */
1250 sc_Nil, /* 90 */
1251 sc_Nil, /* 91 */
1252 sc_Nil, /* 92 */
1253 sc_Nil, /* 93 */
1254 sc_Nil, /* 94 */
1255 sc_Nil, /* 95 */
1256 sc_Nil, /* 96 */
1257 sc_Nil, /* 97 */
1258 sc_Nil, /* 98 */
1259 sc_Nil, /* 99 */
1260 sc_Text, /* 100: C_BLOCK block start/end */
1261 sc_Text, /* 101: C_FCN function start/end */
1262 sc_Info, /* 102: C_EOS end of struct/union/enum */
1263 sc_Nil, /* 103: C_FILE file start */
1264 sc_Nil, /* 104: C_LINE line number */
1265 sc_Nil, /* 105: C_ALIAS combined type info */
1266 sc_Nil, /* 106: C_HIDDEN ??? */
1267 };
1268
1269 /* Convert COFF storage class to ECOFF symbol type. */
1270 static const st_t map_coff_sym_type[] = {
1271 st_Nil, /* 0: C_NULL */
1272 st_Local, /* 1: C_AUTO auto var */
1273 st_Global, /* 2: C_EXT external */
1274 st_Static, /* 3: C_STAT static */
1275 st_Local, /* 4: C_REG register */
1276 st_Global, /* 5: C_EXTDEF ??? */
1277 st_Label, /* 6: C_LABEL label */
1278 st_Label, /* 7: C_ULABEL user label */
1279 st_Member, /* 8: C_MOS member of struct */
1280 st_Param, /* 9: C_ARG argument */
1281 st_Block, /* 10: C_STRTAG struct tag */
1282 st_Member, /* 11: C_MOU member of union */
1283 st_Block, /* 12: C_UNTAG union tag */
1284 st_Typedef, /* 13: C_TPDEF typedef */
1285 st_Static, /* 14: C_USTATIC ??? */
1286 st_Block, /* 15: C_ENTAG enum tag */
1287 st_Member, /* 16: C_MOE member of enum */
1288 st_Param, /* 17: C_REGPARM register parameter */
1289 st_Member, /* 18; C_FIELD bitfield */
1290 st_Nil, /* 19 */
1291 st_Nil, /* 20 */
1292 st_Nil, /* 21 */
1293 st_Nil, /* 22 */
1294 st_Nil, /* 23 */
1295 st_Nil, /* 24 */
1296 st_Nil, /* 25 */
1297 st_Nil, /* 26 */
1298 st_Nil, /* 27 */
1299 st_Nil, /* 28 */
1300 st_Nil, /* 29 */
1301 st_Nil, /* 30 */
1302 st_Nil, /* 31 */
1303 st_Nil, /* 32 */
1304 st_Nil, /* 33 */
1305 st_Nil, /* 34 */
1306 st_Nil, /* 35 */
1307 st_Nil, /* 36 */
1308 st_Nil, /* 37 */
1309 st_Nil, /* 38 */
1310 st_Nil, /* 39 */
1311 st_Nil, /* 40 */
1312 st_Nil, /* 41 */
1313 st_Nil, /* 42 */
1314 st_Nil, /* 43 */
1315 st_Nil, /* 44 */
1316 st_Nil, /* 45 */
1317 st_Nil, /* 46 */
1318 st_Nil, /* 47 */
1319 st_Nil, /* 48 */
1320 st_Nil, /* 49 */
1321 st_Nil, /* 50 */
1322 st_Nil, /* 51 */
1323 st_Nil, /* 52 */
1324 st_Nil, /* 53 */
1325 st_Nil, /* 54 */
1326 st_Nil, /* 55 */
1327 st_Nil, /* 56 */
1328 st_Nil, /* 57 */
1329 st_Nil, /* 58 */
1330 st_Nil, /* 59 */
1331 st_Nil, /* 60 */
1332 st_Nil, /* 61 */
1333 st_Nil, /* 62 */
1334 st_Nil, /* 63 */
1335 st_Nil, /* 64 */
1336 st_Nil, /* 65 */
1337 st_Nil, /* 66 */
1338 st_Nil, /* 67 */
1339 st_Nil, /* 68 */
1340 st_Nil, /* 69 */
1341 st_Nil, /* 70 */
1342 st_Nil, /* 71 */
1343 st_Nil, /* 72 */
1344 st_Nil, /* 73 */
1345 st_Nil, /* 74 */
1346 st_Nil, /* 75 */
1347 st_Nil, /* 76 */
1348 st_Nil, /* 77 */
1349 st_Nil, /* 78 */
1350 st_Nil, /* 79 */
1351 st_Nil, /* 80 */
1352 st_Nil, /* 81 */
1353 st_Nil, /* 82 */
1354 st_Nil, /* 83 */
1355 st_Nil, /* 84 */
1356 st_Nil, /* 85 */
1357 st_Nil, /* 86 */
1358 st_Nil, /* 87 */
1359 st_Nil, /* 88 */
1360 st_Nil, /* 89 */
1361 st_Nil, /* 90 */
1362 st_Nil, /* 91 */
1363 st_Nil, /* 92 */
1364 st_Nil, /* 93 */
1365 st_Nil, /* 94 */
1366 st_Nil, /* 95 */
1367 st_Nil, /* 96 */
1368 st_Nil, /* 97 */
1369 st_Nil, /* 98 */
1370 st_Nil, /* 99 */
1371 st_Block, /* 100: C_BLOCK block start/end */
1372 st_Proc, /* 101: C_FCN function start/end */
1373 st_End, /* 102: C_EOS end of struct/union/enum */
1374 st_File, /* 103: C_FILE file start */
1375 st_Nil, /* 104: C_LINE line number */
1376 st_Nil, /* 105: C_ALIAS combined type info */
1377 st_Nil, /* 106: C_HIDDEN ??? */
1378 };
1379
1380 /* Keep track of different sized allocation requests. */
1381 static alloc_info_t alloc_counts[(int) alloc_type_last];
1382 \f
1383 /* Record whether we have seen any debugging information. */
1384 int ecoff_debugging_seen = 0;
1385
1386 /* Various statics. */
1387 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */
1388 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */
1389 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */
1390 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */
1391 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */
1392 #ifdef ECOFF_DEBUG
1393 static int debug = 0; /* trace functions */
1394 #endif
1395 static int stabs_seen = 0; /* != 0 if stabs have been seen */
1396
1397 static int current_file_idx;
1398 static const char *current_stabs_filename;
1399
1400 /* Pseudo symbol to use when putting stabs into the symbol table. */
1401 #ifndef STABS_SYMBOL
1402 #define STABS_SYMBOL "@stabs"
1403 #endif
1404
1405 static char stabs_symbol[] = STABS_SYMBOL;
1406 \f
1407 /* Prototypes for functions defined in this file. */
1408
1409 static void add_varray_page (varray_t *vp);
1410 static symint_t add_string (varray_t *vp,
1411 struct hash_control *hash_tbl,
1412 const char *str,
1413 shash_t **ret_hash);
1414 static localsym_t *add_ecoff_symbol (const char *str, st_t type,
1415 sc_t storage, symbolS *sym,
1416 bfd_vma addend, symint_t value,
1417 symint_t indx);
1418 static symint_t add_aux_sym_symint (symint_t aux_word);
1419 static symint_t add_aux_sym_rndx (int file_index, symint_t sym_index);
1420 static symint_t add_aux_sym_tir (type_info_t *t,
1421 hash_state_t state,
1422 thash_t **hash_tbl);
1423 static tag_t *get_tag (const char *tag, localsym_t *sym, bt_t basic_type);
1424 static void add_unknown_tag (tag_t *ptag);
1425 static void add_procedure (char *func, int aent);
1426 static void add_file (const char *file_name, int indx, int fake);
1427 #ifdef ECOFF_DEBUG
1428 static char *sc_to_string (sc_t storage_class);
1429 static char *st_to_string (st_t symbol_type);
1430 #endif
1431 static void mark_stabs (int);
1432 static char *ecoff_add_bytes (char **buf, char **bufend,
1433 char *bufptr, unsigned long need);
1434 static unsigned long ecoff_padding_adjust
1435 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1436 unsigned long offset, char **bufptrptr);
1437 static unsigned long ecoff_build_lineno
1438 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1439 unsigned long offset, long *linecntptr);
1440 static unsigned long ecoff_build_symbols
1441 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1442 unsigned long offset);
1443 static unsigned long ecoff_build_procs
1444 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1445 unsigned long offset);
1446 static unsigned long ecoff_build_aux
1447 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1448 unsigned long offset);
1449 static unsigned long ecoff_build_strings (char **buf, char **bufend,
1450 unsigned long offset,
1451 varray_t *vp);
1452 static unsigned long ecoff_build_ss
1453 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1454 unsigned long offset);
1455 static unsigned long ecoff_build_fdr
1456 (const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1457 unsigned long offset);
1458 static void ecoff_setup_ext (void);
1459 static page_type *allocate_cluster (unsigned long npages);
1460 static page_type *allocate_page (void);
1461 static scope_t *allocate_scope (void);
1462 static void free_scope (scope_t *ptr);
1463 static vlinks_t *allocate_vlinks (void);
1464 static shash_t *allocate_shash (void);
1465 static thash_t *allocate_thash (void);
1466 static tag_t *allocate_tag (void);
1467 static void free_tag (tag_t *ptr);
1468 static forward_t *allocate_forward (void);
1469 static thead_t *allocate_thead (void);
1470 static void free_thead (thead_t *ptr);
1471 static lineno_list_t *allocate_lineno_list (void);
1472 \f
1473 /* This function should be called when the assembler starts up. */
1474
1475 void
1476 ecoff_read_begin_hook (void)
1477 {
1478 tag_hash = hash_new ();
1479 top_tag_head = allocate_thead ();
1480 top_tag_head->first_tag = (tag_t *) NULL;
1481 top_tag_head->free = (thead_t *) NULL;
1482 top_tag_head->prev = cur_tag_head;
1483 cur_tag_head = top_tag_head;
1484 }
1485
1486 /* This function should be called when a symbol is created. */
1487
1488 void
1489 ecoff_symbol_new_hook (symbolS *symbolP)
1490 {
1491 OBJ_SYMFIELD_TYPE *obj;
1492
1493 /* Make sure that we have a file pointer, but only if we have seen a
1494 file. If we haven't seen a file, then this is a probably special
1495 symbol created by md_begin which may required special handling at
1496 some point. Creating a dummy file with a dummy name is certainly
1497 wrong. */
1498 if (cur_file_ptr == (efdr_t *) NULL
1499 && seen_at_least_1_file ())
1500 add_file ((const char *) NULL, 0, 1);
1501 obj = symbol_get_obj (symbolP);
1502 obj->ecoff_file = cur_file_ptr;
1503 obj->ecoff_symbol = NULL;
1504 obj->ecoff_extern_size = 0;
1505 }
1506
1507 void
1508 ecoff_symbol_clone_hook (symbolS *newsymP, symbolS *orgsymP)
1509 {
1510 OBJ_SYMFIELD_TYPE *n, *o;
1511
1512 n = symbol_get_obj (newsymP);
1513 o = symbol_get_obj (orgsymP);
1514 memcpy (n, o, sizeof *n);
1515 }
1516 \f
1517 /* Add a page to a varray object. */
1518
1519 static void
1520 add_varray_page (varray_t *vp /* varray to add page to */)
1521 {
1522 vlinks_t *new_links = allocate_vlinks ();
1523
1524 #ifdef MALLOC_CHECK
1525 if (vp->object_size > 1)
1526 new_links->datum = (page_type *) xcalloc (1, vp->object_size);
1527 else
1528 #endif
1529 new_links->datum = allocate_page ();
1530
1531 alloc_counts[(int) alloc_type_varray].total_alloc++;
1532 alloc_counts[(int) alloc_type_varray].total_pages++;
1533
1534 new_links->start_index = vp->num_allocated;
1535 vp->objects_last_page = 0;
1536
1537 if (vp->first == (vlinks_t *) NULL) /* first allocation? */
1538 vp->first = vp->last = new_links;
1539 else
1540 { /* 2nd or greater allocation */
1541 new_links->prev = vp->last;
1542 vp->last->next = new_links;
1543 vp->last = new_links;
1544 }
1545 }
1546 \f
1547 /* Add a string (and null pad) to one of the string tables. */
1548
1549 static symint_t
1550 add_string (varray_t *vp, /* string obstack */
1551 struct hash_control *hash_tbl, /* ptr to hash table */
1552 const char *str, /* string */
1553 shash_t **ret_hash /* return hash pointer */)
1554 {
1555 unsigned long len = strlen (str);
1556 shash_t *hash_ptr;
1557
1558 if (len >= PAGE_USIZE)
1559 as_fatal (_("string too big (%lu bytes)"), len);
1560
1561 hash_ptr = (shash_t *) hash_find (hash_tbl, str);
1562 if (hash_ptr == (shash_t *) NULL)
1563 {
1564 const char *err;
1565
1566 if (vp->objects_last_page + len >= PAGE_USIZE)
1567 {
1568 vp->num_allocated =
1569 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE;
1570 add_varray_page (vp);
1571 }
1572
1573 hash_ptr = allocate_shash ();
1574 hash_ptr->indx = vp->num_allocated;
1575
1576 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page];
1577
1578 vp->objects_last_page += len + 1;
1579 vp->num_allocated += len + 1;
1580
1581 strcpy (hash_ptr->string, str);
1582
1583 err = hash_insert (hash_tbl, str, (char *) hash_ptr);
1584 if (err)
1585 as_fatal (_("inserting \"%s\" into string hash table: %s"),
1586 str, err);
1587 }
1588
1589 if (ret_hash != (shash_t **) NULL)
1590 *ret_hash = hash_ptr;
1591
1592 return hash_ptr->indx;
1593 }
1594 \f
1595 /* Add debugging information for a symbol. */
1596
1597 static localsym_t *
1598 add_ecoff_symbol (const char *str, /* symbol name */
1599 st_t type, /* symbol type */
1600 sc_t storage, /* storage class */
1601 symbolS *sym_value, /* associated symbol. */
1602 bfd_vma addend, /* addend to sym_value. */
1603 symint_t value, /* value of symbol */
1604 symint_t indx /* index to local/aux. syms */)
1605 {
1606 localsym_t *psym;
1607 scope_t *pscope;
1608 thead_t *ptag_head;
1609 tag_t *ptag;
1610 tag_t *ptag_next;
1611 varray_t *vp;
1612 int scope_delta = 0;
1613 shash_t *hash_ptr = (shash_t *) NULL;
1614
1615 if (cur_file_ptr == (efdr_t *) NULL)
1616 as_fatal (_("no current file pointer"));
1617
1618 vp = &cur_file_ptr->symbols;
1619
1620 if (vp->objects_last_page == vp->objects_per_page)
1621 add_varray_page (vp);
1622
1623 psym = &vp->last->datum->sym[vp->objects_last_page++];
1624
1625 if (str == (const char *) NULL && sym_value != (symbolS *) NULL)
1626 psym->name = S_GET_NAME (sym_value);
1627 else
1628 psym->name = str;
1629 psym->as_sym = sym_value;
1630 if (sym_value != (symbolS *) NULL)
1631 symbol_get_obj (sym_value)->ecoff_symbol = psym;
1632 psym->addend = addend;
1633 psym->file_ptr = cur_file_ptr;
1634 psym->proc_ptr = cur_proc_ptr;
1635 psym->begin_ptr = (localsym_t *) NULL;
1636 psym->index_ptr = (aux_t *) NULL;
1637 psym->forward_ref = (forward_t *) NULL;
1638 psym->sym_index = -1;
1639 memset (&psym->ecoff_sym, 0, sizeof (EXTR));
1640 psym->ecoff_sym.asym.value = value;
1641 psym->ecoff_sym.asym.st = (unsigned) type;
1642 psym->ecoff_sym.asym.sc = (unsigned) storage;
1643 psym->ecoff_sym.asym.index = indx;
1644
1645 /* If there is an associated symbol, we wait until the end of the
1646 assembly before deciding where to put the name (it may be just an
1647 external symbol). Otherwise, this is just a debugging symbol and
1648 the name should go with the current file. */
1649 if (sym_value == (symbolS *) NULL)
1650 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL)
1651 ? 0
1652 : add_string (&cur_file_ptr->strings,
1653 cur_file_ptr->str_hash,
1654 str,
1655 &hash_ptr));
1656
1657 ++vp->num_allocated;
1658
1659 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym))
1660 return psym;
1661
1662 /* Save the symbol within the hash table if this is a static
1663 item, and it has a name. */
1664 if (hash_ptr != (shash_t *) NULL
1665 && (type == st_Global || type == st_Static || type == st_Label
1666 || type == st_Proc || type == st_StaticProc))
1667 hash_ptr->sym_ptr = psym;
1668
1669 /* push or pop a scope if appropriate. */
1670 switch (type)
1671 {
1672 default:
1673 break;
1674
1675 case st_File: /* beginning of file */
1676 case st_Proc: /* procedure */
1677 case st_StaticProc: /* static procedure */
1678 case st_Block: /* begin scope */
1679 pscope = allocate_scope ();
1680 pscope->prev = cur_file_ptr->cur_scope;
1681 pscope->lsym = psym;
1682 pscope->type = type;
1683 cur_file_ptr->cur_scope = pscope;
1684
1685 if (type != st_File)
1686 scope_delta = 1;
1687
1688 /* For every block type except file, struct, union, or
1689 enumeration blocks, push a level on the tag stack. We omit
1690 file types, so that tags can span file boundaries. */
1691 if (type != st_File && storage != sc_Info)
1692 {
1693 ptag_head = allocate_thead ();
1694 ptag_head->first_tag = 0;
1695 ptag_head->prev = cur_tag_head;
1696 cur_tag_head = ptag_head;
1697 }
1698 break;
1699
1700 case st_End:
1701 pscope = cur_file_ptr->cur_scope;
1702 if (pscope == (scope_t *) NULL)
1703 as_fatal (_("too many st_End's"));
1704 else
1705 {
1706 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st;
1707
1708 psym->begin_ptr = pscope->lsym;
1709
1710 if (begin_type != st_File)
1711 scope_delta = -1;
1712
1713 /* Except for file, structure, union, or enumeration end
1714 blocks remove all tags created within this scope. */
1715 if (begin_type != st_File && storage != sc_Info)
1716 {
1717 ptag_head = cur_tag_head;
1718 cur_tag_head = ptag_head->prev;
1719
1720 for (ptag = ptag_head->first_tag;
1721 ptag != (tag_t *) NULL;
1722 ptag = ptag_next)
1723 {
1724 if (ptag->forward_ref != (forward_t *) NULL)
1725 add_unknown_tag (ptag);
1726
1727 ptag_next = ptag->same_block;
1728 ptag->hash_ptr->tag_ptr = ptag->same_name;
1729 free_tag (ptag);
1730 }
1731
1732 free_thead (ptag_head);
1733 }
1734
1735 cur_file_ptr->cur_scope = pscope->prev;
1736
1737 /* block begin gets next sym #. This is set when we know
1738 the symbol index value. */
1739
1740 /* Functions push two or more aux words as follows:
1741 1st word: index+1 of the end symbol (filled in later).
1742 2nd word: type of the function (plus any aux words needed).
1743 Also, tie the external pointer back to the function begin symbol. */
1744 if (begin_type != st_File && begin_type != st_Block)
1745 {
1746 symint_t ty;
1747 varray_t *svp = &cur_file_ptr->aux_syms;
1748
1749 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0);
1750 pscope->lsym->index_ptr =
1751 &svp->last->datum->aux[svp->objects_last_page - 1];
1752 ty = add_aux_sym_tir (&last_func_type_info,
1753 hash_no,
1754 &cur_file_ptr->thash_head[0]);
1755 (void) ty;
1756 /* This seems to be unnecessary. I'm not even sure what it is
1757 * intended to do. It's from mips-tfile.
1758 * if (last_func_sym_value != (symbolS *) NULL)
1759 * {
1760 * last_func_sym_value->ifd = cur_file_ptr->file_index;
1761 * last_func_sym_value->index = ty;
1762 * }
1763 */
1764 }
1765
1766 free_scope (pscope);
1767 }
1768 }
1769
1770 cur_file_ptr->nested_scopes += scope_delta;
1771
1772 #ifdef ECOFF_DEBUG
1773 if (debug && type != st_File
1774 && (debug > 2 || type == st_Block || type == st_End
1775 || type == st_Proc || type == st_StaticProc))
1776 {
1777 char *sc_str = sc_to_string (storage);
1778 char *st_str = st_to_string (type);
1779 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0);
1780
1781 fprintf (stderr,
1782 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s",
1783 value, depth, sc_str);
1784
1785 if (str_start && str_end_p1 - str_start > 0)
1786 fprintf (stderr, " st= %-11s name= %.*s\n",
1787 st_str, str_end_p1 - str_start, str_start);
1788 else
1789 {
1790 unsigned long len = strlen (st_str);
1791 fprintf (stderr, " st= %.*s\n", len - 1, st_str);
1792 }
1793 }
1794 #endif
1795
1796 return psym;
1797 }
1798 \f
1799 /* Add an auxiliary symbol (passing a symint). This is actually used
1800 for integral aux types, not just symints. */
1801
1802 static symint_t
1803 add_aux_sym_symint (symint_t aux_word /* auxiliary information word */)
1804 {
1805 varray_t *vp;
1806 aux_t *aux_ptr;
1807
1808 if (cur_file_ptr == (efdr_t *) NULL)
1809 as_fatal (_("no current file pointer"));
1810
1811 vp = &cur_file_ptr->aux_syms;
1812
1813 if (vp->objects_last_page == vp->objects_per_page)
1814 add_varray_page (vp);
1815
1816 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1817 aux_ptr->type = aux_isym;
1818 aux_ptr->data.isym = aux_word;
1819
1820 return vp->num_allocated++;
1821 }
1822
1823 /* Add an auxiliary symbol (passing a file/symbol index combo). */
1824
1825 static symint_t
1826 add_aux_sym_rndx (int file_index, symint_t sym_index)
1827 {
1828 varray_t *vp;
1829 aux_t *aux_ptr;
1830
1831 if (cur_file_ptr == (efdr_t *) NULL)
1832 as_fatal (_("no current file pointer"));
1833
1834 vp = &cur_file_ptr->aux_syms;
1835
1836 if (vp->objects_last_page == vp->objects_per_page)
1837 add_varray_page (vp);
1838
1839 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1840 aux_ptr->type = aux_rndx;
1841 aux_ptr->data.rndx.rfd = file_index;
1842 aux_ptr->data.rndx.index = sym_index;
1843
1844 return vp->num_allocated++;
1845 }
1846 \f
1847 /* Add an auxiliary symbol (passing the basic type and possibly
1848 type qualifiers). */
1849
1850 static symint_t
1851 add_aux_sym_tir (type_info_t *t, /* current type information */
1852 hash_state_t state, /* whether to hash type or not */
1853 thash_t **hash_tbl /* pointer to hash table to use */)
1854 {
1855 varray_t *vp;
1856 aux_t *aux_ptr;
1857 static AUXU init_aux;
1858 symint_t ret;
1859 int i;
1860 AUXU aux;
1861
1862 if (cur_file_ptr == (efdr_t *) NULL)
1863 as_fatal (_("no current file pointer"));
1864
1865 vp = &cur_file_ptr->aux_syms;
1866
1867 aux = init_aux;
1868 aux.ti.bt = (int) t->basic_type;
1869 aux.ti.continued = 0;
1870 aux.ti.fBitfield = t->bitfield;
1871
1872 aux.ti.tq0 = (int) t->type_qualifiers[0];
1873 aux.ti.tq1 = (int) t->type_qualifiers[1];
1874 aux.ti.tq2 = (int) t->type_qualifiers[2];
1875 aux.ti.tq3 = (int) t->type_qualifiers[3];
1876 aux.ti.tq4 = (int) t->type_qualifiers[4];
1877 aux.ti.tq5 = (int) t->type_qualifiers[5];
1878
1879 /* For anything that adds additional information, we must not hash,
1880 so check here, and reset our state. */
1881
1882 if (state != hash_no
1883 && (t->type_qualifiers[0] == tq_Array
1884 || t->type_qualifiers[1] == tq_Array
1885 || t->type_qualifiers[2] == tq_Array
1886 || t->type_qualifiers[3] == tq_Array
1887 || t->type_qualifiers[4] == tq_Array
1888 || t->type_qualifiers[5] == tq_Array
1889 || t->basic_type == bt_Struct
1890 || t->basic_type == bt_Union
1891 || t->basic_type == bt_Enum
1892 || t->bitfield
1893 || t->num_dims > 0))
1894 state = hash_no;
1895
1896 /* See if we can hash this type, and save some space, but some types
1897 can't be hashed (because they contain arrays or continuations),
1898 and others can be put into the hash list, but cannot use existing
1899 types because other aux entries precede this one. */
1900
1901 if (state != hash_no)
1902 {
1903 thash_t *hash_ptr;
1904 symint_t hi;
1905
1906 hi = aux.isym & ((1 << HASHBITS) - 1);
1907 hi %= THASH_SIZE;
1908
1909 for (hash_ptr = hash_tbl[hi];
1910 hash_ptr != (thash_t *)0;
1911 hash_ptr = hash_ptr->next)
1912 {
1913 if (aux.isym == hash_ptr->type.isym)
1914 break;
1915 }
1916
1917 if (hash_ptr != (thash_t *) NULL && state == hash_yes)
1918 return hash_ptr->indx;
1919
1920 if (hash_ptr == (thash_t *) NULL)
1921 {
1922 hash_ptr = allocate_thash ();
1923 hash_ptr->next = hash_tbl[hi];
1924 hash_ptr->type = aux;
1925 hash_ptr->indx = vp->num_allocated;
1926 hash_tbl[hi] = hash_ptr;
1927 }
1928 }
1929
1930 /* Everything is set up, add the aux symbol. */
1931 if (vp->objects_last_page == vp->objects_per_page)
1932 add_varray_page (vp);
1933
1934 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1935 aux_ptr->type = aux_tir;
1936 aux_ptr->data = aux;
1937
1938 ret = vp->num_allocated++;
1939
1940 /* Add bitfield length if it exists.
1941
1942 NOTE: Mips documentation claims bitfield goes at the end of the
1943 AUX record, but the DECstation compiler emits it here.
1944 (This would only make a difference for enum bitfields.)
1945
1946 Also note: We use the last size given since gcc may emit 2
1947 for an enum bitfield. */
1948
1949 if (t->bitfield)
1950 (void) add_aux_sym_symint ((symint_t) t->sizes[t->num_sizes - 1]);
1951
1952 /* Add tag information if needed. Structure, union, and enum
1953 references add 2 aux symbols: a [file index, symbol index]
1954 pointer to the structure type, and the current file index. */
1955
1956 if (t->basic_type == bt_Struct
1957 || t->basic_type == bt_Union
1958 || t->basic_type == bt_Enum)
1959 {
1960 symint_t file_index = t->tag_ptr->ifd;
1961 localsym_t *sym = t->tag_ptr->sym;
1962 forward_t *forward_ref = allocate_forward ();
1963
1964 if (sym != (localsym_t *) NULL)
1965 {
1966 forward_ref->next = sym->forward_ref;
1967 sym->forward_ref = forward_ref;
1968 }
1969 else
1970 {
1971 forward_ref->next = t->tag_ptr->forward_ref;
1972 t->tag_ptr->forward_ref = forward_ref;
1973 }
1974
1975 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil);
1976 forward_ref->index_ptr
1977 = &vp->last->datum->aux[vp->objects_last_page - 1];
1978
1979 (void) add_aux_sym_symint (file_index);
1980 forward_ref->ifd_ptr
1981 = &vp->last->datum->aux[vp->objects_last_page - 1];
1982 }
1983
1984 /* Add information about array bounds if they exist. */
1985 for (i = 0; i < t->num_dims; i++)
1986 {
1987 (void) add_aux_sym_rndx (ST_RFDESCAPE,
1988 cur_file_ptr->int_type);
1989
1990 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/
1991 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */
1992 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/
1993 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */
1994 ? 0
1995 : (t->sizes[i] * 8) / t->dimensions[i]);
1996 };
1997
1998 /* NOTE: Mips documentation claims that the bitfield width goes here.
1999 But it needs to be emitted earlier. */
2000
2001 return ret;
2002 }
2003 \f
2004 /* Add a tag to the tag table (unless it already exists). */
2005
2006 static tag_t *
2007 get_tag (const char *tag, /* tag name */
2008 localsym_t *sym, /* tag start block */
2009 bt_t basic_type /* bt_Struct, bt_Union, or bt_Enum */)
2010 {
2011 shash_t *hash_ptr;
2012 const char *err;
2013 tag_t *tag_ptr;
2014
2015 if (cur_file_ptr == (efdr_t *) NULL)
2016 as_fatal (_("no current file pointer"));
2017
2018 hash_ptr = (shash_t *) hash_find (tag_hash, tag);
2019
2020 if (hash_ptr != (shash_t *) NULL
2021 && hash_ptr->tag_ptr != (tag_t *) NULL)
2022 {
2023 tag_ptr = hash_ptr->tag_ptr;
2024 if (sym != (localsym_t *) NULL)
2025 {
2026 tag_ptr->basic_type = basic_type;
2027 tag_ptr->ifd = cur_file_ptr->file_index;
2028 tag_ptr->sym = sym;
2029 }
2030 return tag_ptr;
2031 }
2032
2033 if (hash_ptr == (shash_t *) NULL)
2034 {
2035 char *perm;
2036
2037 perm = xstrdup (tag);
2038 hash_ptr = allocate_shash ();
2039 err = hash_insert (tag_hash, perm, (char *) hash_ptr);
2040 if (err)
2041 as_fatal (_("inserting \"%s\" into tag hash table: %s"),
2042 tag, err);
2043 hash_ptr->string = perm;
2044 }
2045
2046 tag_ptr = allocate_tag ();
2047 tag_ptr->forward_ref = (forward_t *) NULL;
2048 tag_ptr->hash_ptr = hash_ptr;
2049 tag_ptr->same_name = hash_ptr->tag_ptr;
2050 tag_ptr->basic_type = basic_type;
2051 tag_ptr->sym = sym;
2052 tag_ptr->ifd = ((sym == (localsym_t *) NULL)
2053 ? (symint_t) -1
2054 : cur_file_ptr->file_index);
2055 tag_ptr->same_block = cur_tag_head->first_tag;
2056
2057 cur_tag_head->first_tag = tag_ptr;
2058 hash_ptr->tag_ptr = tag_ptr;
2059
2060 return tag_ptr;
2061 }
2062 \f
2063 /* Add an unknown {struct, union, enum} tag. */
2064
2065 static void
2066 add_unknown_tag (tag_t *ptag /* pointer to tag information */)
2067 {
2068 shash_t *hash_ptr = ptag->hash_ptr;
2069 char *name = hash_ptr->string;
2070 localsym_t *sym;
2071 forward_t **pf;
2072
2073 #ifdef ECOFF_DEBUG
2074 if (debug > 1)
2075 {
2076 char *agg_type = "{unknown aggregate type}";
2077 switch (ptag->basic_type)
2078 {
2079 case bt_Struct: agg_type = "struct"; break;
2080 case bt_Union: agg_type = "union"; break;
2081 case bt_Enum: agg_type = "enum"; break;
2082 default: break;
2083 }
2084
2085 fprintf (stderr, "unknown %s %.*s found\n", agg_type,
2086 hash_ptr->len, name_start);
2087 }
2088 #endif
2089
2090 sym = add_ecoff_symbol (name,
2091 st_Block,
2092 sc_Info,
2093 (symbolS *) NULL,
2094 (bfd_vma) 0,
2095 (symint_t) 0,
2096 (symint_t) 0);
2097
2098 (void) add_ecoff_symbol (name,
2099 st_End,
2100 sc_Info,
2101 (symbolS *) NULL,
2102 (bfd_vma) 0,
2103 (symint_t) 0,
2104 (symint_t) 0);
2105
2106 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next)
2107 ;
2108 *pf = ptag->forward_ref;
2109 }
2110 \f
2111 /* Add a procedure to the current file's list of procedures, and record
2112 this is the current procedure. If AENT, then only set the requested
2113 symbol's function type. */
2114
2115 static void
2116 add_procedure (char *func /* func name */, int aent)
2117 {
2118 varray_t *vp;
2119 proc_t *new_proc_ptr;
2120 symbolS *sym;
2121
2122 #ifdef ECOFF_DEBUG
2123 if (debug)
2124 fputc ('\n', stderr);
2125 #endif
2126
2127 /* Set the BSF_FUNCTION flag for the symbol. */
2128 sym = symbol_find_or_make (func);
2129 symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION;
2130
2131 if (aent)
2132 return;
2133
2134 if (cur_file_ptr == (efdr_t *) NULL)
2135 as_fatal (_("no current file pointer"));
2136
2137 vp = &cur_file_ptr->procs;
2138
2139 if (vp->objects_last_page == vp->objects_per_page)
2140 add_varray_page (vp);
2141
2142 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++];
2143
2144 if (first_proc_ptr == (proc_t *) NULL)
2145 first_proc_ptr = new_proc_ptr;
2146
2147 vp->num_allocated++;
2148
2149 new_proc_ptr->pdr.isym = -1;
2150 new_proc_ptr->pdr.iline = -1;
2151 new_proc_ptr->pdr.lnLow = -1;
2152 new_proc_ptr->pdr.lnHigh = -1;
2153
2154 /* Push the start of the function. */
2155 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text,
2156 sym, (bfd_vma) 0, (symint_t) 0,
2157 (symint_t) 0);
2158
2159 ++proc_cnt;
2160
2161 /* Fill in the linenos preceding the .ent, if any. */
2162 if (noproc_lineno != (lineno_list_t *) NULL)
2163 {
2164 lineno_list_t *l;
2165
2166 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next)
2167 l->proc = new_proc_ptr;
2168 *last_lineno_ptr = noproc_lineno;
2169 while (*last_lineno_ptr != NULL)
2170 {
2171 last_lineno = *last_lineno_ptr;
2172 last_lineno_ptr = &last_lineno->next;
2173 }
2174 noproc_lineno = (lineno_list_t *) NULL;
2175 }
2176 }
2177
2178 symbolS *
2179 ecoff_get_cur_proc_sym (void)
2180 {
2181 return (cur_proc_ptr ? cur_proc_ptr->sym->as_sym : NULL);
2182 }
2183 \f
2184 /* Add a new filename, and set up all of the file relative
2185 virtual arrays (strings, symbols, aux syms, etc.). Record
2186 where the current file structure lives. */
2187
2188 static void
2189 add_file (const char *file_name, int indx ATTRIBUTE_UNUSED, int fake)
2190 {
2191 int first_ch;
2192 efdr_t *fil_ptr;
2193
2194 #ifdef ECOFF_DEBUG
2195 if (debug)
2196 fprintf (stderr, "\tfile\t%.*s\n", len, file_start);
2197 #endif
2198
2199 /* If the file name is NULL, then no .file symbol appeared, and we
2200 want to use the actual file name. */
2201 if (file_name == (const char *) NULL)
2202 {
2203 if (first_file != (efdr_t *) NULL)
2204 as_fatal (_("fake .file after real one"));
2205 file_name = as_where ((unsigned int *) NULL);
2206
2207 /* Automatically generate ECOFF debugging information, since I
2208 think that's what other ECOFF assemblers do. We don't do
2209 this if we see a .file directive with a string, since that
2210 implies that some sort of debugging information is being
2211 provided. */
2212 if (! symbol_table_frozen && debug_type == DEBUG_UNSPECIFIED)
2213 debug_type = DEBUG_ECOFF;
2214 }
2215 else if (debug_type == DEBUG_UNSPECIFIED)
2216 debug_type = DEBUG_NONE;
2217
2218 #ifndef NO_LISTING
2219 if (listing)
2220 listing_source_file (file_name);
2221 #endif
2222
2223 current_stabs_filename = file_name;
2224
2225 /* If we're creating stabs, then we don't actually make a new FDR.
2226 Instead, we just create a stabs symbol. */
2227 if (stabs_seen)
2228 {
2229 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2230 symbol_new (FAKE_LABEL_NAME, now_seg,
2231 (valueT) frag_now_fix (),
2232 frag_now),
2233 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL));
2234 return;
2235 }
2236
2237 first_ch = *file_name;
2238
2239 /* FIXME: We can't safely merge files which have line number
2240 information (fMerge will be zero in this case). Otherwise, we
2241 get incorrect line number debugging info. See for instance
2242 ecoff_build_lineno, which will end up setting all file->fdr.*
2243 fields multiple times, resulting in incorrect debug info. In
2244 order to make this work right, all line number and symbol info
2245 for the same source file has to be adjacent in the object file,
2246 so that a single file descriptor can be used to point to them.
2247 This would require maintaining file specific lists of line
2248 numbers and symbols for each file, so that they can be merged
2249 together (or output together) when two .file pseudo-ops are
2250 merged into one file descriptor. */
2251
2252 /* See if the file has already been created. */
2253 for (fil_ptr = first_file;
2254 fil_ptr != (efdr_t *) NULL;
2255 fil_ptr = fil_ptr->next_file)
2256 {
2257 if (first_ch == fil_ptr->name[0]
2258 && filename_cmp (file_name, fil_ptr->name) == 0
2259 && fil_ptr->fdr.fMerge)
2260 {
2261 cur_file_ptr = fil_ptr;
2262 if (! fake)
2263 cur_file_ptr->fake = 0;
2264 break;
2265 }
2266 }
2267
2268 /* If this is a new file, create it. */
2269 if (fil_ptr == (efdr_t *) NULL)
2270 {
2271 if (file_desc.objects_last_page == file_desc.objects_per_page)
2272 add_varray_page (&file_desc);
2273
2274 fil_ptr = cur_file_ptr =
2275 &file_desc.last->datum->file[file_desc.objects_last_page++];
2276 *fil_ptr = init_file;
2277
2278 fil_ptr->file_index = current_file_idx++;
2279 ++file_desc.num_allocated;
2280
2281 fil_ptr->fake = fake;
2282
2283 /* Allocate the string hash table. */
2284 fil_ptr->str_hash = hash_new ();
2285
2286 /* Make sure 0 byte in string table is null */
2287 add_string (&fil_ptr->strings,
2288 fil_ptr->str_hash,
2289 "",
2290 (shash_t **)0);
2291
2292 if (strlen (file_name) > PAGE_USIZE - 2)
2293 as_fatal (_("filename goes over one page boundary"));
2294
2295 /* Push the start of the filename. We assume that the filename
2296 will be stored at string offset 1. */
2297 (void) add_ecoff_symbol (file_name, st_File, sc_Text,
2298 (symbolS *) NULL, (bfd_vma) 0,
2299 (symint_t) 0, (symint_t) 0);
2300 fil_ptr->fdr.rss = 1;
2301 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1];
2302
2303 /* Update the linked list of file descriptors. */
2304 *last_file_ptr = fil_ptr;
2305 last_file_ptr = &fil_ptr->next_file;
2306
2307 /* Add void & int types to the file (void should be first to catch
2308 errant 0's within the index fields). */
2309 fil_ptr->void_type = add_aux_sym_tir (&void_type_info,
2310 hash_yes,
2311 &cur_file_ptr->thash_head[0]);
2312
2313 fil_ptr->int_type = add_aux_sym_tir (&int_type_info,
2314 hash_yes,
2315 &cur_file_ptr->thash_head[0]);
2316 }
2317 }
2318
2319 /* This function is called when the assembler notices a preprocessor
2320 directive switching to a new file. This will not happen in
2321 compiler output, only in hand coded assembler. */
2322
2323 void
2324 ecoff_new_file (const char *name, int appfile ATTRIBUTE_UNUSED)
2325 {
2326 if (cur_file_ptr != NULL && filename_cmp (cur_file_ptr->name, name) == 0)
2327 return;
2328 add_file (name, 0, 0);
2329
2330 /* This is a hand coded assembler file, so automatically turn on
2331 debugging information. */
2332 if (debug_type == DEBUG_UNSPECIFIED)
2333 debug_type = DEBUG_ECOFF;
2334 }
2335 \f
2336 #ifdef ECOFF_DEBUG
2337
2338 /* Convert storage class to string. */
2339
2340 static char *
2341 sc_to_string (storage_class)
2342 sc_t storage_class;
2343 {
2344 switch (storage_class)
2345 {
2346 case sc_Nil: return "Nil,";
2347 case sc_Text: return "Text,";
2348 case sc_Data: return "Data,";
2349 case sc_Bss: return "Bss,";
2350 case sc_Register: return "Register,";
2351 case sc_Abs: return "Abs,";
2352 case sc_Undefined: return "Undefined,";
2353 case sc_CdbLocal: return "CdbLocal,";
2354 case sc_Bits: return "Bits,";
2355 case sc_CdbSystem: return "CdbSystem,";
2356 case sc_RegImage: return "RegImage,";
2357 case sc_Info: return "Info,";
2358 case sc_UserStruct: return "UserStruct,";
2359 case sc_SData: return "SData,";
2360 case sc_SBss: return "SBss,";
2361 case sc_RData: return "RData,";
2362 case sc_Var: return "Var,";
2363 case sc_Common: return "Common,";
2364 case sc_SCommon: return "SCommon,";
2365 case sc_VarRegister: return "VarRegister,";
2366 case sc_Variant: return "Variant,";
2367 case sc_SUndefined: return "SUndefined,";
2368 case sc_Init: return "Init,";
2369 case sc_Max: return "Max,";
2370 }
2371
2372 return "???,";
2373 }
2374
2375 #endif /* DEBUG */
2376 \f
2377 #ifdef ECOFF_DEBUG
2378
2379 /* Convert symbol type to string. */
2380
2381 static char *
2382 st_to_string (symbol_type)
2383 st_t symbol_type;
2384 {
2385 switch (symbol_type)
2386 {
2387 case st_Nil: return "Nil,";
2388 case st_Global: return "Global,";
2389 case st_Static: return "Static,";
2390 case st_Param: return "Param,";
2391 case st_Local: return "Local,";
2392 case st_Label: return "Label,";
2393 case st_Proc: return "Proc,";
2394 case st_Block: return "Block,";
2395 case st_End: return "End,";
2396 case st_Member: return "Member,";
2397 case st_Typedef: return "Typedef,";
2398 case st_File: return "File,";
2399 case st_RegReloc: return "RegReloc,";
2400 case st_Forward: return "Forward,";
2401 case st_StaticProc: return "StaticProc,";
2402 case st_Constant: return "Constant,";
2403 case st_Str: return "String,";
2404 case st_Number: return "Number,";
2405 case st_Expr: return "Expr,";
2406 case st_Type: return "Type,";
2407 case st_Max: return "Max,";
2408 }
2409
2410 return "???,";
2411 }
2412
2413 #endif /* DEBUG */
2414 \f
2415 /* Parse .begin directives which have a label as the first argument
2416 which gives the location of the start of the block. */
2417
2418 void
2419 ecoff_directive_begin (int ignore ATTRIBUTE_UNUSED)
2420 {
2421 char *name;
2422 char name_end;
2423
2424 if (cur_file_ptr == (efdr_t *) NULL)
2425 {
2426 as_warn (_(".begin directive without a preceding .file directive"));
2427 demand_empty_rest_of_line ();
2428 return;
2429 }
2430
2431 if (cur_proc_ptr == (proc_t *) NULL)
2432 {
2433 as_warn (_(".begin directive without a preceding .ent directive"));
2434 demand_empty_rest_of_line ();
2435 return;
2436 }
2437
2438 name_end = get_symbol_name (&name);
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 (void) restore_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 \f
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
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_end = get_symbol_name (&name);
2476
2477 /* The value is the distance between the .bend directive and the
2478 corresponding symbol. We fill in the offset when we write out
2479 the symbol. */
2480 endsym = symbol_find (name);
2481 if (endsym == (symbolS *) NULL)
2482 as_warn (_(".bend directive names unknown symbol"));
2483 else
2484 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym,
2485 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2486
2487 restore_line_pointer (name_end);
2488
2489 /* The line number follows, but we don't use it. */
2490 (void) get_absolute_expression ();
2491 demand_empty_rest_of_line ();
2492 }
2493 \f
2494 /* COFF debugging information is provided as a series of directives
2495 (.def, .scl, etc.). We build up information as we read the
2496 directives in the following static variables, and file it away when
2497 we reach the .endef directive. */
2498 static char *coff_sym_name;
2499 static type_info_t coff_type;
2500 static sc_t coff_storage_class;
2501 static st_t coff_symbol_typ;
2502 static int coff_is_function;
2503 static char *coff_tag;
2504 static valueT coff_value;
2505 static symbolS *coff_sym_value;
2506 static bfd_vma coff_sym_addend;
2507 static int coff_inside_enumeration;
2508
2509 /* Handle a .def directive: start defining a symbol. */
2510
2511 void
2512 ecoff_directive_def (int ignore ATTRIBUTE_UNUSED)
2513 {
2514 char *name;
2515 char name_end;
2516
2517 ecoff_debugging_seen = 1;
2518
2519 SKIP_WHITESPACE ();
2520
2521 name_end = get_symbol_name (&name);
2522
2523 if (coff_sym_name != (char *) NULL)
2524 as_warn (_(".def pseudo-op used inside of .def/.endef; ignored"));
2525 else if (*name == '\0')
2526 as_warn (_("empty symbol name in .def; ignored"));
2527 else
2528 {
2529 free (coff_sym_name);
2530 free (coff_tag);
2531
2532 coff_sym_name = xstrdup (name);
2533 coff_type = type_info_init;
2534 coff_storage_class = sc_Nil;
2535 coff_symbol_typ = st_Nil;
2536 coff_is_function = 0;
2537 coff_tag = (char *) NULL;
2538 coff_value = 0;
2539 coff_sym_value = (symbolS *) NULL;
2540 coff_sym_addend = 0;
2541 }
2542
2543 restore_line_pointer (name_end);
2544
2545 demand_empty_rest_of_line ();
2546 }
2547
2548 /* Handle a .dim directive, used to give dimensions for an array. The
2549 arguments are comma separated numbers. mips-tfile assumes that
2550 there will not be more than 6 dimensions, and gdb won't read any
2551 more than that anyhow, so I will also make that assumption. */
2552
2553 void
2554 ecoff_directive_dim (int ignore ATTRIBUTE_UNUSED)
2555 {
2556 int dimens[N_TQ];
2557 int i;
2558
2559 if (coff_sym_name == (char *) NULL)
2560 {
2561 as_warn (_(".dim pseudo-op used outside of .def/.endef; ignored"));
2562 demand_empty_rest_of_line ();
2563 return;
2564 }
2565
2566 for (i = 0; i < N_TQ; i++)
2567 {
2568 SKIP_WHITESPACE ();
2569 dimens[i] = get_absolute_expression ();
2570 if (*input_line_pointer == ',')
2571 ++input_line_pointer;
2572 else
2573 {
2574 if (*input_line_pointer != '\n'
2575 && *input_line_pointer != ';')
2576 as_warn (_("badly formed .dim directive"));
2577 break;
2578 }
2579 }
2580
2581 if (i == N_TQ)
2582 --i;
2583
2584 /* The dimensions are stored away in reverse order. */
2585 for (; i >= 0; i--)
2586 {
2587 if (coff_type.num_dims >= N_TQ)
2588 {
2589 as_warn (_("too many .dim entries"));
2590 break;
2591 }
2592 coff_type.dimensions[coff_type.num_dims] = dimens[i];
2593 ++coff_type.num_dims;
2594 }
2595
2596 demand_empty_rest_of_line ();
2597 }
2598
2599 /* Handle a .scl directive, which sets the COFF storage class of the
2600 symbol. */
2601
2602 void
2603 ecoff_directive_scl (int ignore ATTRIBUTE_UNUSED)
2604 {
2605 long val;
2606
2607 if (coff_sym_name == (char *) NULL)
2608 {
2609 as_warn (_(".scl pseudo-op used outside of .def/.endef; ignored"));
2610 demand_empty_rest_of_line ();
2611 return;
2612 }
2613
2614 val = get_absolute_expression ();
2615
2616 coff_symbol_typ = map_coff_sym_type[val];
2617 coff_storage_class = map_coff_storage[val];
2618
2619 demand_empty_rest_of_line ();
2620 }
2621
2622 /* Handle a .size directive. For some reason mips-tfile.c thinks that
2623 .size can have multiple arguments. We humor it, although gcc will
2624 never generate more than one argument. */
2625
2626 void
2627 ecoff_directive_size (int ignore ATTRIBUTE_UNUSED)
2628 {
2629 int sizes[N_TQ];
2630 int i;
2631
2632 if (coff_sym_name == (char *) NULL)
2633 {
2634 as_warn (_(".size pseudo-op used outside of .def/.endef; ignored"));
2635 demand_empty_rest_of_line ();
2636 return;
2637 }
2638
2639 for (i = 0; i < N_TQ; i++)
2640 {
2641 SKIP_WHITESPACE ();
2642 sizes[i] = get_absolute_expression ();
2643 if (*input_line_pointer == ',')
2644 ++input_line_pointer;
2645 else
2646 {
2647 if (*input_line_pointer != '\n'
2648 && *input_line_pointer != ';')
2649 as_warn (_("badly formed .size directive"));
2650 break;
2651 }
2652 }
2653
2654 if (i == N_TQ)
2655 --i;
2656
2657 /* The sizes are stored away in reverse order. */
2658 for (; i >= 0; i--)
2659 {
2660 if (coff_type.num_sizes >= N_TQ)
2661 {
2662 as_warn (_("too many .size entries"));
2663 break;
2664 }
2665 coff_type.sizes[coff_type.num_sizes] = sizes[i];
2666 ++coff_type.num_sizes;
2667 }
2668
2669 demand_empty_rest_of_line ();
2670 }
2671
2672 /* Handle the .type directive, which gives the COFF type of the
2673 symbol. */
2674
2675 void
2676 ecoff_directive_type (int ignore ATTRIBUTE_UNUSED)
2677 {
2678 long val;
2679 tq_t *tq_ptr;
2680 tq_t *tq_shft;
2681
2682 if (coff_sym_name == (char *) NULL)
2683 {
2684 as_warn (_(".type pseudo-op used outside of .def/.endef; ignored"));
2685 demand_empty_rest_of_line ();
2686 return;
2687 }
2688
2689 val = get_absolute_expression ();
2690
2691 coff_type.orig_type = BTYPE (val);
2692 coff_type.basic_type = map_coff_types[coff_type.orig_type];
2693
2694 tq_ptr = &coff_type.type_qualifiers[N_TQ];
2695 while (val & ~N_BTMASK)
2696 {
2697 if (tq_ptr == &coff_type.type_qualifiers[0])
2698 {
2699 /* FIXME: We could handle this by setting the continued bit.
2700 There would still be a limit: the .type argument can not
2701 be infinite. */
2702 as_warn (_("the type of %s is too complex; it will be simplified"),
2703 coff_sym_name);
2704 break;
2705 }
2706 if (ISPTR (val))
2707 *--tq_ptr = tq_Ptr;
2708 else if (ISFCN (val))
2709 *--tq_ptr = tq_Proc;
2710 else if (ISARY (val))
2711 *--tq_ptr = tq_Array;
2712 else
2713 as_fatal (_("Unrecognized .type argument"));
2714
2715 val = DECREF (val);
2716 }
2717
2718 tq_shft = &coff_type.type_qualifiers[0];
2719 while (tq_ptr != &coff_type.type_qualifiers[N_TQ])
2720 *tq_shft++ = *tq_ptr++;
2721
2722 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc)
2723 {
2724 /* If this is a function, ignore it, so that we don't get two
2725 entries (one from the .ent, and one for the .def that
2726 precedes it). Save the type information so that the end
2727 block can properly add it after the begin block index. For
2728 MIPS knows what reason, we must strip off the function type
2729 at this point. */
2730 coff_is_function = 1;
2731 tq_shft[-1] = tq_Nil;
2732 }
2733
2734 while (tq_shft != &coff_type.type_qualifiers[N_TQ])
2735 *tq_shft++ = tq_Nil;
2736
2737 demand_empty_rest_of_line ();
2738 }
2739
2740 /* Handle the .tag directive, which gives the name of a structure,
2741 union or enum. */
2742
2743 void
2744 ecoff_directive_tag (int ignore ATTRIBUTE_UNUSED)
2745 {
2746 char *name;
2747 char name_end;
2748
2749 if (coff_sym_name == (char *) NULL)
2750 {
2751 as_warn (_(".tag pseudo-op used outside of .def/.endef; ignored"));
2752 demand_empty_rest_of_line ();
2753 return;
2754 }
2755
2756 name_end = get_symbol_name (&name);
2757
2758 coff_tag = xstrdup (name);
2759
2760 (void) restore_line_pointer (name_end);
2761
2762 demand_empty_rest_of_line ();
2763 }
2764
2765 /* Handle the .val directive, which gives the value of the symbol. It
2766 may be the name of a static or global symbol. */
2767
2768 void
2769 ecoff_directive_val (int ignore ATTRIBUTE_UNUSED)
2770 {
2771 expressionS exp;
2772
2773 if (coff_sym_name == (char *) NULL)
2774 {
2775 as_warn (_(".val pseudo-op used outside of .def/.endef; ignored"));
2776 demand_empty_rest_of_line ();
2777 return;
2778 }
2779
2780 expression (&exp);
2781 if (exp.X_op != O_constant && exp.X_op != O_symbol)
2782 {
2783 as_bad (_(".val expression is too complex"));
2784 demand_empty_rest_of_line ();
2785 return;
2786 }
2787
2788 if (exp.X_op == O_constant)
2789 coff_value = exp.X_add_number;
2790 else
2791 {
2792 coff_sym_value = exp.X_add_symbol;
2793 coff_sym_addend = exp.X_add_number;
2794 }
2795
2796 demand_empty_rest_of_line ();
2797 }
2798
2799 /* Handle the .endef directive, which terminates processing of COFF
2800 debugging information for a symbol. */
2801
2802 void
2803 ecoff_directive_endef (int ignore ATTRIBUTE_UNUSED)
2804 {
2805 char *name;
2806 symint_t indx;
2807 localsym_t *sym;
2808
2809 demand_empty_rest_of_line ();
2810
2811 if (coff_sym_name == (char *) NULL)
2812 {
2813 as_warn (_(".endef pseudo-op used before .def; ignored"));
2814 return;
2815 }
2816
2817 name = coff_sym_name;
2818 coff_sym_name = (char *) NULL;
2819
2820 /* If the symbol is a static or external, we have already gotten the
2821 appropriate type and class, so make sure we don't override those
2822 values. This is needed because there are some type and classes
2823 that are not in COFF, such as short data, etc. */
2824 if (coff_sym_value != (symbolS *) NULL)
2825 {
2826 coff_symbol_typ = st_Nil;
2827 coff_storage_class = sc_Nil;
2828 }
2829
2830 coff_type.extra_sizes = coff_tag != (char *) NULL;
2831 if (coff_type.num_dims > 0)
2832 {
2833 int diff = coff_type.num_dims - coff_type.num_sizes;
2834 int i = coff_type.num_dims - 1;
2835 int j;
2836
2837 if (coff_type.num_sizes != 1 || diff < 0)
2838 {
2839 as_warn (_("bad COFF debugging information"));
2840 return;
2841 }
2842
2843 /* If this is an array, make sure the same number of dimensions
2844 and sizes were passed, creating extra sizes for multiply
2845 dimensioned arrays if not passed. */
2846 coff_type.extra_sizes = 0;
2847 if (diff)
2848 {
2849 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1;
2850 while (j >= 0)
2851 {
2852 coff_type.sizes[j] = (((j - diff) >= 0)
2853 ? coff_type.sizes[j - diff]
2854 : 0);
2855 j--;
2856 }
2857
2858 coff_type.num_sizes = i + 1;
2859 for (i--; i >= 0; i--)
2860 coff_type.sizes[i] = (coff_type.dimensions[i + 1] == 0
2861 ? 0
2862 : (coff_type.sizes[i + 1]
2863 / coff_type.dimensions[i + 1]));
2864 }
2865 }
2866 else if (coff_symbol_typ == st_Member
2867 && coff_type.num_sizes - coff_type.extra_sizes == 1)
2868 {
2869 /* Is this a bitfield? This is indicated by a structure member
2870 having a size field that isn't an array. */
2871 coff_type.bitfield = 1;
2872 }
2873
2874 /* Except for enumeration members & begin/ending of scopes, put the
2875 type word in the aux. symbol table. */
2876 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End)
2877 indx = 0;
2878 else if (coff_inside_enumeration)
2879 indx = cur_file_ptr->void_type;
2880 else
2881 {
2882 if (coff_type.basic_type == bt_Struct
2883 || coff_type.basic_type == bt_Union
2884 || coff_type.basic_type == bt_Enum)
2885 {
2886 if (coff_tag == (char *) NULL)
2887 {
2888 as_warn (_("no tag specified for %s"), name);
2889 return;
2890 }
2891
2892 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL,
2893 coff_type.basic_type);
2894 }
2895
2896 if (coff_is_function)
2897 {
2898 last_func_type_info = coff_type;
2899 last_func_sym_value = coff_sym_value;
2900 return;
2901 }
2902
2903 indx = add_aux_sym_tir (&coff_type,
2904 hash_yes,
2905 &cur_file_ptr->thash_head[0]);
2906 }
2907
2908 /* Do any last minute adjustments that are necessary. */
2909 switch (coff_symbol_typ)
2910 {
2911 default:
2912 break;
2913
2914 /* For the beginning of structs, unions, and enumerations, the
2915 size info needs to be passed in the value field. */
2916 case st_Block:
2917 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes
2918 != 1)
2919 {
2920 as_warn (_("bad COFF debugging information"));
2921 return;
2922 }
2923 else
2924 coff_value = coff_type.sizes[0];
2925
2926 coff_inside_enumeration = (coff_type.orig_type == T_ENUM);
2927 break;
2928
2929 /* For the end of structs, unions, and enumerations, omit the
2930 name which is always ".eos". This needs to be done last, so
2931 that any error reporting above gives the correct name. */
2932 case st_End:
2933 free (name);
2934 name = (char *) NULL;
2935 coff_value = 0;
2936 coff_inside_enumeration = 0;
2937 break;
2938
2939 /* Members of structures and unions that aren't bitfields, need
2940 to adjust the value from a byte offset to a bit offset.
2941 Members of enumerations do not have the value adjusted, and
2942 can be distinguished by indx == indexNil. For enumerations,
2943 update the maximum enumeration value. */
2944 case st_Member:
2945 if (! coff_type.bitfield && ! coff_inside_enumeration)
2946 coff_value *= 8;
2947
2948 break;
2949 }
2950
2951 /* Add the symbol. */
2952 sym = add_ecoff_symbol (name,
2953 coff_symbol_typ,
2954 coff_storage_class,
2955 coff_sym_value,
2956 coff_sym_addend,
2957 (symint_t) coff_value,
2958 indx);
2959
2960 /* deal with struct, union, and enum tags. */
2961 if (coff_symbol_typ == st_Block)
2962 {
2963 /* Create or update the tag information. */
2964 tag_t *tag_ptr = get_tag (name,
2965 sym,
2966 coff_type.basic_type);
2967 forward_t **pf;
2968
2969 /* Remember any forward references. */
2970 for (pf = &sym->forward_ref;
2971 *pf != (forward_t *) NULL;
2972 pf = &(*pf)->next)
2973 ;
2974 *pf = tag_ptr->forward_ref;
2975 tag_ptr->forward_ref = (forward_t *) NULL;
2976 }
2977 }
2978 \f
2979 /* Parse .end directives. */
2980
2981 void
2982 ecoff_directive_end (int ignore ATTRIBUTE_UNUSED)
2983 {
2984 char *name;
2985 char name_end;
2986 symbolS *ent;
2987
2988 if (cur_file_ptr == (efdr_t *) NULL)
2989 {
2990 as_warn (_(".end directive without a preceding .file directive"));
2991 demand_empty_rest_of_line ();
2992 return;
2993 }
2994
2995 if (cur_proc_ptr == (proc_t *) NULL)
2996 {
2997 as_warn (_(".end directive without a preceding .ent directive"));
2998 demand_empty_rest_of_line ();
2999 return;
3000 }
3001
3002 name_end = get_symbol_name (&name);
3003
3004 if (name == input_line_pointer)
3005 {
3006 as_warn (_(".end directive has no name"));
3007 (void) restore_line_pointer (name_end);
3008 demand_empty_rest_of_line ();
3009 return;
3010 }
3011
3012 /* The value is the distance between the .end directive and the
3013 corresponding symbol. We create a fake symbol to hold the
3014 current location, and put in the offset when we write out the
3015 symbol. */
3016 ent = symbol_find (name);
3017 if (ent == (symbolS *) NULL)
3018 as_warn (_(".end directive names unknown symbol"));
3019 else
3020 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text,
3021 symbol_new (FAKE_LABEL_NAME, now_seg,
3022 (valueT) frag_now_fix (),
3023 frag_now),
3024 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
3025
3026 #ifdef md_flush_pending_output
3027 md_flush_pending_output ();
3028 #endif
3029
3030 cur_proc_ptr = (proc_t *) NULL;
3031
3032 (void) restore_line_pointer (name_end);
3033 demand_empty_rest_of_line ();
3034 }
3035 \f
3036 /* Parse .ent directives. */
3037
3038 void
3039 ecoff_directive_ent (int aent)
3040 {
3041 char *name;
3042 char name_end;
3043
3044 if (cur_file_ptr == (efdr_t *) NULL)
3045 add_file ((const char *) NULL, 0, 1);
3046
3047 if (!aent && cur_proc_ptr != (proc_t *) NULL)
3048 {
3049 as_warn (_("second .ent directive found before .end directive"));
3050 demand_empty_rest_of_line ();
3051 return;
3052 }
3053
3054 name_end = get_symbol_name (&name);
3055
3056 if (name == input_line_pointer)
3057 {
3058 as_warn (_("%s directive has no name"), aent ? ".aent" : ".ent");
3059 (void) restore_line_pointer (name_end);
3060 demand_empty_rest_of_line ();
3061 return;
3062 }
3063
3064 add_procedure (name, aent);
3065
3066 (void) restore_line_pointer (name_end);
3067
3068 /* The .ent directive is sometimes followed by a number. I'm not
3069 really sure what the number means. I don't see any way to store
3070 the information in the PDR. The Irix 4 assembler seems to ignore
3071 the information. */
3072 SKIP_WHITESPACE ();
3073 if (*input_line_pointer == ',')
3074 {
3075 ++input_line_pointer;
3076 SKIP_WHITESPACE ();
3077 }
3078 if (ISDIGIT (*input_line_pointer)
3079 || *input_line_pointer == '-')
3080 (void) get_absolute_expression ();
3081
3082 demand_empty_rest_of_line ();
3083 }
3084 \f
3085 /* Parse .extern directives. */
3086
3087 void
3088 ecoff_directive_extern (int ignore ATTRIBUTE_UNUSED)
3089 {
3090 char *name;
3091 int c;
3092 symbolS *symbolp;
3093 valueT size;
3094
3095 c = get_symbol_name (&name);
3096 symbolp = symbol_find_or_make (name);
3097 (void) restore_line_pointer (c);
3098
3099 S_SET_EXTERNAL (symbolp);
3100
3101 if (*input_line_pointer == ',')
3102 ++input_line_pointer;
3103 size = get_absolute_expression ();
3104
3105 symbol_get_obj (symbolp)->ecoff_extern_size = size;
3106 }
3107 \f
3108 /* Parse .file directives. */
3109
3110 void
3111 ecoff_directive_file (int ignore ATTRIBUTE_UNUSED)
3112 {
3113 int indx;
3114 char *name;
3115 int len;
3116
3117 if (cur_proc_ptr != (proc_t *) NULL)
3118 {
3119 as_warn (_("no way to handle .file within .ent/.end section"));
3120 demand_empty_rest_of_line ();
3121 return;
3122 }
3123
3124 indx = (int) get_absolute_expression ();
3125
3126 /* FIXME: we don't have to save the name here. */
3127 name = demand_copy_C_string (&len);
3128
3129 add_file (name, indx - 1, 0);
3130
3131 demand_empty_rest_of_line ();
3132 }
3133 \f
3134 /* Parse .fmask directives. */
3135
3136 void
3137 ecoff_directive_fmask (int ignore ATTRIBUTE_UNUSED)
3138 {
3139 long val;
3140
3141 if (cur_proc_ptr == (proc_t *) NULL)
3142 {
3143 as_warn (_(".fmask outside of .ent"));
3144 demand_empty_rest_of_line ();
3145 return;
3146 }
3147
3148 if (get_absolute_expression_and_terminator (&val) != ',')
3149 {
3150 as_warn (_("bad .fmask directive"));
3151 --input_line_pointer;
3152 demand_empty_rest_of_line ();
3153 return;
3154 }
3155
3156 cur_proc_ptr->pdr.fregmask = val;
3157 cur_proc_ptr->pdr.fregoffset = get_absolute_expression ();
3158
3159 demand_empty_rest_of_line ();
3160 }
3161 \f
3162 /* Parse .frame directives. */
3163
3164 void
3165 ecoff_directive_frame (int ignore ATTRIBUTE_UNUSED)
3166 {
3167 long val;
3168
3169 if (cur_proc_ptr == (proc_t *) NULL)
3170 {
3171 as_warn (_(".frame outside of .ent"));
3172 demand_empty_rest_of_line ();
3173 return;
3174 }
3175
3176 cur_proc_ptr->pdr.framereg = tc_get_register (1);
3177
3178 SKIP_WHITESPACE ();
3179 if (*input_line_pointer++ != ','
3180 || get_absolute_expression_and_terminator (&val) != ',')
3181 {
3182 as_warn (_("bad .frame directive"));
3183 --input_line_pointer;
3184 demand_empty_rest_of_line ();
3185 return;
3186 }
3187
3188 cur_proc_ptr->pdr.frameoffset = val;
3189
3190 cur_proc_ptr->pdr.pcreg = tc_get_register (0);
3191
3192 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according to
3193 Sandro. I don't yet know where this value should be stored, if
3194 anywhere. Don't call demand_empty_rest_of_line (). */
3195 s_ignore (42);
3196 }
3197 \f
3198 /* Parse .mask directives. */
3199
3200 void
3201 ecoff_directive_mask (int ignore ATTRIBUTE_UNUSED)
3202 {
3203 long val;
3204
3205 if (cur_proc_ptr == (proc_t *) NULL)
3206 {
3207 as_warn (_(".mask outside of .ent"));
3208 demand_empty_rest_of_line ();
3209 return;
3210 }
3211
3212 if (get_absolute_expression_and_terminator (&val) != ',')
3213 {
3214 as_warn (_("bad .mask directive"));
3215 --input_line_pointer;
3216 demand_empty_rest_of_line ();
3217 return;
3218 }
3219
3220 cur_proc_ptr->pdr.regmask = val;
3221 cur_proc_ptr->pdr.regoffset = get_absolute_expression ();
3222
3223 demand_empty_rest_of_line ();
3224 }
3225 \f
3226 /* Parse .loc directives. */
3227
3228 void
3229 ecoff_directive_loc (int ignore ATTRIBUTE_UNUSED)
3230 {
3231 lineno_list_t *list;
3232 symint_t lineno;
3233
3234 if (cur_file_ptr == (efdr_t *) NULL)
3235 {
3236 as_warn (_(".loc before .file"));
3237 demand_empty_rest_of_line ();
3238 return;
3239 }
3240
3241 if (now_seg != text_section)
3242 {
3243 as_warn (_(".loc outside of .text"));
3244 demand_empty_rest_of_line ();
3245 return;
3246 }
3247
3248 /* Skip the file number. */
3249 SKIP_WHITESPACE ();
3250 get_absolute_expression ();
3251 SKIP_WHITESPACE ();
3252
3253 lineno = get_absolute_expression ();
3254
3255 #ifndef NO_LISTING
3256 if (listing)
3257 listing_source_line (lineno);
3258 #endif
3259
3260 /* If we're building stabs, then output a special label rather than
3261 ECOFF line number info. */
3262 if (stabs_seen)
3263 {
3264 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text,
3265 symbol_new (FAKE_LABEL_NAME, now_seg,
3266 (valueT) frag_now_fix (),
3267 frag_now),
3268 (bfd_vma) 0, 0, lineno);
3269 return;
3270 }
3271
3272 list = allocate_lineno_list ();
3273
3274 list->next = (lineno_list_t *) NULL;
3275 list->file = cur_file_ptr;
3276 list->proc = cur_proc_ptr;
3277 list->frag = frag_now;
3278 list->paddr = frag_now_fix ();
3279 list->lineno = lineno;
3280
3281 /* We don't want to merge files which have line numbers. */
3282 cur_file_ptr->fdr.fMerge = 0;
3283
3284 /* A .loc directive will sometimes appear before a .ent directive,
3285 which means that cur_proc_ptr will be NULL here. Arrange to
3286 patch this up. */
3287 if (cur_proc_ptr == (proc_t *) NULL)
3288 {
3289 lineno_list_t **pl;
3290
3291 pl = &noproc_lineno;
3292 while (*pl != (lineno_list_t *) NULL)
3293 pl = &(*pl)->next;
3294 *pl = list;
3295 }
3296 else
3297 {
3298 last_lineno = list;
3299 *last_lineno_ptr = list;
3300 last_lineno_ptr = &list->next;
3301 }
3302 }
3303
3304 /* The MIPS assembler sometimes inserts nop instructions in the
3305 instruction stream. When this happens, we must patch up the .loc
3306 information so that it points to the instruction after the nop. */
3307
3308 void
3309 ecoff_fix_loc (fragS *old_frag, unsigned long old_frag_offset)
3310 {
3311 if (last_lineno != NULL
3312 && last_lineno->frag == old_frag
3313 && last_lineno->paddr == old_frag_offset)
3314 {
3315 last_lineno->frag = frag_now;
3316 last_lineno->paddr = frag_now_fix ();
3317 }
3318 }
3319 \f
3320 /* Make sure the @stabs symbol is emitted. */
3321
3322 static void
3323 mark_stabs (int ignore ATTRIBUTE_UNUSED)
3324 {
3325 if (! stabs_seen)
3326 {
3327 /* Add a dummy @stabs symbol. */
3328 stabs_seen = 1;
3329 (void) add_ecoff_symbol (stabs_symbol, st_Nil, sc_Info,
3330 (symbolS *) NULL,
3331 (bfd_vma) 0, (symint_t) -1,
3332 ECOFF_MARK_STAB (0));
3333 }
3334 }
3335 \f
3336 /* Parse .weakext directives. */
3337 #ifndef TC_MIPS
3338 /* For TC_MIPS use the version in tc-mips.c. */
3339 void
3340 ecoff_directive_weakext (int ignore ATTRIBUTE_UNUSED)
3341 {
3342 char *name;
3343 int c;
3344 symbolS *symbolP;
3345 expressionS exp;
3346
3347 c = get_symbol_name (&name);
3348 symbolP = symbol_find_or_make (name);
3349 (void) restore_line_pointer (c);
3350
3351 SKIP_WHITESPACE ();
3352
3353 if (*input_line_pointer == ',')
3354 {
3355 if (S_IS_DEFINED (symbolP))
3356 {
3357 as_bad (_("symbol `%s' is already defined"),
3358 S_GET_NAME (symbolP));
3359 ignore_rest_of_line ();
3360 return;
3361 }
3362
3363 ++input_line_pointer;
3364 SKIP_WHITESPACE ();
3365 if (! is_end_of_line[(unsigned char) *input_line_pointer])
3366 {
3367 expression (&exp);
3368 if (exp.X_op != O_symbol)
3369 {
3370 as_bad (_("bad .weakext directive"));
3371 ignore_rest_of_line ();
3372 return;
3373 }
3374 symbol_set_value_expression (symbolP, &exp);
3375 }
3376 }
3377
3378 S_SET_WEAK (symbolP);
3379
3380 demand_empty_rest_of_line ();
3381 }
3382 #endif /* not TC_MIPS */
3383 \f
3384 /* Handle .stabs directives. The actual parsing routine is done by a
3385 generic routine. This routine is called via OBJ_PROCESS_STAB.
3386 When this is called, input_line_pointer will be pointing at the
3387 value field of the stab.
3388
3389 .stabs directives have five fields:
3390 "string" a string, encoding the type information.
3391 code a numeric code, defined in <stab.h>
3392 0 a zero
3393 desc a zero or line number
3394 value a numeric value or an address.
3395
3396 If the value is relocatable, we transform this into:
3397 iss points as an index into string space
3398 value value from lookup of the name
3399 st st from lookup of the name
3400 sc sc from lookup of the name
3401 index code|CODE_MASK
3402
3403 If the value is not relocatable, we transform this into:
3404 iss points as an index into string space
3405 value value
3406 st st_Nil
3407 sc sc_Nil
3408 index code|CODE_MASK
3409
3410 .stabn directives have four fields (string is null):
3411 code a numeric code, defined in <stab.h>
3412 0 a zero
3413 desc a zero or a line number
3414 value a numeric value or an address. */
3415
3416 void
3417 ecoff_stab (segT sec ATTRIBUTE_UNUSED,
3418 int what,
3419 const char *string,
3420 int type,
3421 int other,
3422 int desc)
3423 {
3424 efdr_t *save_file_ptr = cur_file_ptr;
3425 symbolS *sym;
3426 symint_t value;
3427 bfd_vma addend;
3428 st_t st;
3429 sc_t sc;
3430 symint_t indx;
3431 localsym_t *hold = NULL;
3432
3433 ecoff_debugging_seen = 1;
3434
3435 /* We don't handle .stabd. */
3436 if (what != 's' && what != 'n')
3437 {
3438 as_bad (_(".stab%c is not supported"), what);
3439 return;
3440 }
3441
3442 /* A .stabn uses a null name, not an empty string. */
3443 if (what == 'n')
3444 string = NULL;
3445
3446 /* We ignore the other field. */
3447 if (other != 0)
3448 as_warn (_(".stab%c: ignoring non-zero other field"), what);
3449
3450 /* Make sure we have a current file. */
3451 if (cur_file_ptr == (efdr_t *) NULL)
3452 {
3453 add_file ((const char *) NULL, 0, 1);
3454 save_file_ptr = cur_file_ptr;
3455 }
3456
3457 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
3458 signal to gdb. */
3459 if (stabs_seen == 0)
3460 mark_stabs (0);
3461
3462 /* Line number stabs are handled differently, since they have two
3463 values, the line number and the address of the label. We use the
3464 index field (aka desc) to hold the line number, and the value
3465 field to hold the address. The symbol type is st_Label, which
3466 should be different from the other stabs, so that gdb can
3467 recognize it. */
3468 if (type == N_SLINE)
3469 {
3470 SYMR dummy_symr;
3471 char *name;
3472 char name_end;
3473
3474 #ifndef NO_LISTING
3475 if (listing)
3476 listing_source_line ((unsigned int) desc);
3477 #endif
3478
3479 dummy_symr.index = desc;
3480 if (dummy_symr.index != desc)
3481 {
3482 as_warn (_("line number (%d) for .stab%c directive cannot fit in index field (20 bits)"),
3483 desc, what);
3484 return;
3485 }
3486
3487 name_end = get_symbol_name (&name);
3488 sym = symbol_find_or_make (name);
3489 (void) restore_line_pointer (name_end);
3490
3491 value = 0;
3492 addend = 0;
3493 st = st_Label;
3494 sc = sc_Text;
3495 indx = desc;
3496 }
3497 else
3498 {
3499 #ifndef NO_LISTING
3500 if (listing && (type == N_SO || type == N_SOL))
3501 listing_source_file (string);
3502 #endif
3503
3504 if (ISDIGIT (*input_line_pointer)
3505 || *input_line_pointer == '-'
3506 || *input_line_pointer == '+')
3507 {
3508 st = st_Nil;
3509 sc = sc_Nil;
3510 sym = (symbolS *) NULL;
3511 value = get_absolute_expression ();
3512 addend = 0;
3513 }
3514 else if (! is_name_beginner ((unsigned char) *input_line_pointer))
3515 {
3516 as_warn (_("illegal .stab%c directive, bad character"), what);
3517 return;
3518 }
3519 else
3520 {
3521 expressionS exp;
3522
3523 sc = sc_Nil;
3524 st = st_Nil;
3525
3526 expression (&exp);
3527 if (exp.X_op == O_constant)
3528 {
3529 sym = NULL;
3530 value = exp.X_add_number;
3531 addend = 0;
3532 }
3533 else if (exp.X_op == O_symbol)
3534 {
3535 sym = exp.X_add_symbol;
3536 value = 0;
3537 addend = exp.X_add_number;
3538 }
3539 else
3540 {
3541 sym = make_expr_symbol (&exp);
3542 value = 0;
3543 addend = 0;
3544 }
3545 }
3546
3547 indx = ECOFF_MARK_STAB (type);
3548 }
3549
3550 /* Don't store the stabs symbol we are creating as the type of the
3551 ECOFF symbol. We want to compute the type of the ECOFF symbol
3552 independently. */
3553 if (sym != (symbolS *) NULL)
3554 hold = symbol_get_obj (sym)->ecoff_symbol;
3555
3556 (void) add_ecoff_symbol (string, st, sc, sym, addend, value, indx);
3557
3558 if (sym != (symbolS *) NULL)
3559 symbol_get_obj (sym)->ecoff_symbol = hold;
3560
3561 /* Restore normal file type. */
3562 cur_file_ptr = save_file_ptr;
3563 }
3564 \f
3565 /* Frob an ECOFF symbol. Small common symbols go into a special
3566 .scommon section rather than bfd_com_section. */
3567
3568 void
3569 ecoff_frob_symbol (symbolS *sym)
3570 {
3571 if (S_IS_COMMON (sym)
3572 && S_GET_VALUE (sym) > 0
3573 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput))
3574 {
3575 static asection scom_section;
3576 static asymbol scom_symbol;
3577
3578 /* We must construct a fake section similar to bfd_com_section
3579 but with the name .scommon. */
3580 if (scom_section.name == NULL)
3581 {
3582 scom_section = *bfd_com_section_ptr;
3583 scom_section.name = ".scommon";
3584 scom_section.output_section = &scom_section;
3585 scom_section.symbol = &scom_symbol;
3586 scom_section.symbol_ptr_ptr = &scom_section.symbol;
3587 scom_symbol = *bfd_com_section_ptr->symbol;
3588 scom_symbol.name = ".scommon";
3589 scom_symbol.section = &scom_section;
3590 }
3591 S_SET_SEGMENT (sym, &scom_section);
3592 }
3593
3594 /* Double check weak symbols. */
3595 if (S_IS_WEAK (sym))
3596 {
3597 if (S_IS_COMMON (sym))
3598 as_bad (_("symbol `%s' can not be both weak and common"),
3599 S_GET_NAME (sym));
3600 }
3601 }
3602 \f
3603 /* Add bytes to the symbolic information buffer. */
3604
3605 static char *
3606 ecoff_add_bytes (char **buf,
3607 char **bufend,
3608 char *bufptr,
3609 unsigned long need)
3610 {
3611 unsigned long at;
3612 unsigned long want;
3613
3614 at = bufptr - *buf;
3615 need -= *bufend - bufptr;
3616 if (need < PAGE_SIZE)
3617 need = PAGE_SIZE;
3618 want = (*bufend - *buf) + need;
3619 *buf = XRESIZEVEC (char, *buf, want);
3620 *bufend = *buf + want;
3621 return *buf + at;
3622 }
3623
3624 /* Adjust the symbolic information buffer to the alignment required
3625 for the ECOFF target debugging information. */
3626
3627 static unsigned long
3628 ecoff_padding_adjust (const struct ecoff_debug_swap *backend,
3629 char **buf,
3630 char **bufend,
3631 unsigned long offset,
3632 char **bufptrptr)
3633 {
3634 bfd_size_type align;
3635
3636 align = backend->debug_align;
3637 if ((offset & (align - 1)) != 0)
3638 {
3639 unsigned long add;
3640
3641 add = align - (offset & (align - 1));
3642 if ((unsigned long) (*bufend - (*buf + offset)) < add)
3643 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add);
3644 memset (*buf + offset, 0, add);
3645 offset += add;
3646 if (bufptrptr != (char **) NULL)
3647 *bufptrptr = *buf + offset;
3648 }
3649
3650 return offset;
3651 }
3652
3653 /* Build the line number information. */
3654
3655 static unsigned long
3656 ecoff_build_lineno (const struct ecoff_debug_swap *backend,
3657 char **buf,
3658 char **bufend,
3659 unsigned long offset,
3660 long *linecntptr)
3661 {
3662 char *bufptr;
3663 lineno_list_t *l;
3664 lineno_list_t *last;
3665 efdr_t *file;
3666 proc_t *proc;
3667 unsigned long c;
3668 long iline;
3669 long totcount;
3670 lineno_list_t first;
3671 lineno_list_t *local_first_lineno = first_lineno;
3672
3673 if (linecntptr != (long *) NULL)
3674 *linecntptr = 0;
3675
3676 bufptr = *buf + offset;
3677
3678 file = (efdr_t *) NULL;
3679 proc = (proc_t *) NULL;
3680 last = (lineno_list_t *) NULL;
3681 c = offset;
3682 iline = 0;
3683 totcount = 0;
3684
3685 /* FIXME? Now that MIPS embedded-PIC is gone, it may be safe to
3686 remove this code. */
3687 /* For some reason the address of the first procedure is ignored
3688 when reading line numbers. This doesn't matter if the address of
3689 the first procedure is 0, but when gcc is generating MIPS
3690 embedded PIC code, it will put strings in the .text section
3691 before the first procedure. We cope by inserting a dummy line if
3692 the address of the first procedure is not 0. Hopefully this
3693 won't screw things up too badly.
3694
3695 Don't do this for ECOFF assembly source line numbers. They work
3696 without this extra attention. */
3697 if (debug_type != DEBUG_ECOFF
3698 && first_proc_ptr != (proc_t *) NULL
3699 && local_first_lineno != (lineno_list_t *) NULL
3700 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym)
3701 + bfd_section_vma (S_GET_SEGMENT (first_proc_ptr->sym->as_sym)))
3702 != 0))
3703 {
3704 first.file = local_first_lineno->file;
3705 first.proc = local_first_lineno->proc;
3706 first.frag = &zero_address_frag;
3707 first.paddr = 0;
3708 first.lineno = 0;
3709
3710 first.next = local_first_lineno;
3711 local_first_lineno = &first;
3712 }
3713
3714 for (l = local_first_lineno; l != (lineno_list_t *) NULL; l = l->next)
3715 {
3716 long count;
3717 long delta;
3718
3719 /* Get the offset to the memory address of the next line number
3720 (in words). Do this first, so that we can skip ahead to the
3721 next useful line number entry. */
3722 if (l->next == (lineno_list_t *) NULL)
3723 {
3724 /* We want a count of zero, but it will be decremented
3725 before it is used. */
3726 count = 1;
3727 }
3728 else if (l->next->frag->fr_address + l->next->paddr
3729 > l->frag->fr_address + l->paddr)
3730 {
3731 count = ((l->next->frag->fr_address + l->next->paddr
3732 - (l->frag->fr_address + l->paddr))
3733 >> 2);
3734 }
3735 else
3736 {
3737 /* Don't change last, so we still get the right delta. */
3738 continue;
3739 }
3740
3741 if (l->file != file || l->proc != proc)
3742 {
3743 if (l->proc != proc && proc != (proc_t *) NULL)
3744 proc->pdr.lnHigh = last->lineno;
3745 if (l->file != file && file != (efdr_t *) NULL)
3746 {
3747 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3748 file->fdr.cline = totcount + count;
3749 if (linecntptr != (long *) NULL)
3750 *linecntptr += totcount + count;
3751 totcount = 0;
3752 }
3753
3754 if (l->file != file)
3755 {
3756 efdr_t *last_file = file;
3757
3758 file = l->file;
3759 if (last_file != (efdr_t *) NULL)
3760 file->fdr.ilineBase
3761 = last_file->fdr.ilineBase + last_file->fdr.cline;
3762 else
3763 file->fdr.ilineBase = 0;
3764 file->fdr.cbLineOffset = c;
3765 }
3766 if (l->proc != proc)
3767 {
3768 proc = l->proc;
3769 if (proc != (proc_t *) NULL)
3770 {
3771 proc->pdr.lnLow = l->lineno;
3772 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset;
3773 proc->pdr.iline = totcount;
3774 }
3775 }
3776
3777 last = (lineno_list_t *) NULL;
3778 }
3779
3780 totcount += count;
3781
3782 /* Get the offset to this line number. */
3783 if (last == (lineno_list_t *) NULL)
3784 delta = 0;
3785 else
3786 delta = l->lineno - last->lineno;
3787
3788 /* Put in the offset to this line number. */
3789 while (delta != 0)
3790 {
3791 int setcount;
3792
3793 /* 1 is added to each count read. */
3794 --count;
3795 /* We can only adjust the word count by up to 15 words at a
3796 time. */
3797 if (count <= 0x0f)
3798 {
3799 setcount = count;
3800 count = 0;
3801 }
3802 else
3803 {
3804 setcount = 0x0f;
3805 count -= 0x0f;
3806 }
3807 if (delta >= -7 && delta <= 7)
3808 {
3809 if (bufptr >= *bufend)
3810 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3811 *bufptr++ = setcount + (delta << 4);
3812 delta = 0;
3813 ++c;
3814 }
3815 else
3816 {
3817 int set;
3818
3819 if (*bufend - bufptr < 3)
3820 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3);
3821 *bufptr++ = setcount + (8 << 4);
3822 if (delta < -0x8000)
3823 {
3824 set = -0x8000;
3825 delta += 0x8000;
3826 }
3827 else if (delta > 0x7fff)
3828 {
3829 set = 0x7fff;
3830 delta -= 0x7fff;
3831 }
3832 else
3833 {
3834 set = delta;
3835 delta = 0;
3836 }
3837 *bufptr++ = set >> 8;
3838 *bufptr++ = set & 0xffff;
3839 c += 3;
3840 }
3841 }
3842
3843 /* Finish adjusting the count. */
3844 while (count > 0)
3845 {
3846 if (bufptr >= *bufend)
3847 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3848 /* 1 is added to each count read. */
3849 --count;
3850 if (count > 0x0f)
3851 {
3852 *bufptr++ = 0x0f;
3853 count -= 0x0f;
3854 }
3855 else
3856 {
3857 *bufptr++ = count;
3858 count = 0;
3859 }
3860 ++c;
3861 }
3862
3863 ++iline;
3864 last = l;
3865 }
3866
3867 if (proc != (proc_t *) NULL)
3868 proc->pdr.lnHigh = last->lineno;
3869 if (file != (efdr_t *) NULL)
3870 {
3871 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3872 file->fdr.cline = totcount;
3873 }
3874
3875 if (linecntptr != (long *) NULL)
3876 *linecntptr += totcount;
3877
3878 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr);
3879
3880 return c;
3881 }
3882
3883 /* Build and swap out the symbols. */
3884
3885 static unsigned long
3886 ecoff_build_symbols (const struct ecoff_debug_swap *backend,
3887 char **buf,
3888 char **bufend,
3889 unsigned long offset)
3890 {
3891 const bfd_size_type external_sym_size = backend->external_sym_size;
3892 void (* const swap_sym_out) (bfd *, const SYMR *, void *)
3893 = backend->swap_sym_out;
3894 char *sym_out;
3895 long isym;
3896 vlinks_t *file_link;
3897
3898 sym_out = *buf + offset;
3899
3900 isym = 0;
3901
3902 /* The symbols are stored by file. */
3903 for (file_link = file_desc.first;
3904 file_link != (vlinks_t *) NULL;
3905 file_link = file_link->next)
3906 {
3907 int ifilesym;
3908 int fil_cnt;
3909 efdr_t *fil_ptr;
3910 efdr_t *fil_end;
3911
3912 if (file_link->next == (vlinks_t *) NULL)
3913 fil_cnt = file_desc.objects_last_page;
3914 else
3915 fil_cnt = file_desc.objects_per_page;
3916 fil_ptr = file_link->datum->file;
3917 fil_end = fil_ptr + fil_cnt;
3918 for (; fil_ptr < fil_end; fil_ptr++)
3919 {
3920 vlinks_t *sym_link;
3921
3922 fil_ptr->fdr.isymBase = isym;
3923 ifilesym = isym;
3924 for (sym_link = fil_ptr->symbols.first;
3925 sym_link != (vlinks_t *) NULL;
3926 sym_link = sym_link->next)
3927 {
3928 int sym_cnt;
3929 localsym_t *sym_ptr;
3930 localsym_t *sym_end;
3931
3932 if (sym_link->next == (vlinks_t *) NULL)
3933 sym_cnt = fil_ptr->symbols.objects_last_page;
3934 else
3935 sym_cnt = fil_ptr->symbols.objects_per_page;
3936 sym_ptr = sym_link->datum->sym;
3937 sym_end = sym_ptr + sym_cnt;
3938 for (; sym_ptr < sym_end; sym_ptr++)
3939 {
3940 int local;
3941 symbolS *as_sym;
3942 forward_t *f;
3943
3944 know (sym_ptr->file_ptr == fil_ptr);
3945
3946 /* If there is no associated gas symbol, then this
3947 is a pure debugging symbol. We have already
3948 added the name (if any) to fil_ptr->strings.
3949 Otherwise we must decide whether this is an
3950 external or a local symbol (actually, it may be
3951 both if the local provides additional debugging
3952 information for the external). */
3953 local = 1;
3954 as_sym = sym_ptr->as_sym;
3955 if (as_sym != (symbolS *) NULL)
3956 {
3957 symint_t indx;
3958
3959 /* The value of a block start symbol is the
3960 offset from the start of the procedure. For
3961 other symbols we just use the gas value (but
3962 we must offset it by the vma of the section,
3963 just as BFD does, because BFD will not see
3964 this value). */
3965 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block
3966 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text)
3967 {
3968 symbolS *begin_sym;
3969
3970 know (sym_ptr->proc_ptr != (proc_t *) NULL);
3971 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
3972 if (S_GET_SEGMENT (as_sym)
3973 != S_GET_SEGMENT (begin_sym))
3974 as_warn (_(".begin/.bend in different segments"));
3975 sym_ptr->ecoff_sym.asym.value =
3976 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
3977 }
3978 else
3979 sym_ptr->ecoff_sym.asym.value =
3980 (S_GET_VALUE (as_sym)
3981 + bfd_section_vma (S_GET_SEGMENT (as_sym))
3982 + sym_ptr->addend);
3983
3984 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym);
3985
3986 /* Set st_Proc to st_StaticProc for local
3987 functions. */
3988 if (sym_ptr->ecoff_sym.asym.st == st_Proc
3989 && S_IS_DEFINED (as_sym)
3990 && ! S_IS_EXTERNAL (as_sym)
3991 && ! S_IS_WEAK (as_sym))
3992 sym_ptr->ecoff_sym.asym.st = st_StaticProc;
3993
3994 /* Get the type and storage class based on where
3995 the symbol actually wound up. Traditionally,
3996 N_LBRAC and N_RBRAC are *not* relocated. */
3997 indx = sym_ptr->ecoff_sym.asym.index;
3998 if (sym_ptr->ecoff_sym.asym.st == st_Nil
3999 && sym_ptr->ecoff_sym.asym.sc == sc_Nil
4000 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4001 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC)
4002 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC))))
4003 {
4004 segT seg;
4005 const char *segname;
4006 st_t st;
4007 sc_t sc;
4008
4009 seg = S_GET_SEGMENT (as_sym);
4010 segname = segment_name (seg);
4011
4012 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4013 && (S_IS_EXTERNAL (as_sym)
4014 || S_IS_WEAK (as_sym)
4015 || ! S_IS_DEFINED (as_sym)))
4016 {
4017 if ((symbol_get_bfdsym (as_sym)->flags
4018 & BSF_FUNCTION) != 0)
4019 st = st_Proc;
4020 else
4021 st = st_Global;
4022 }
4023 else if (seg == text_section)
4024 st = st_Label;
4025 else
4026 st = st_Static;
4027
4028 if (! S_IS_DEFINED (as_sym))
4029 {
4030 valueT s;
4031
4032 s = symbol_get_obj (as_sym)->ecoff_extern_size;
4033 if (s == 0
4034 || s > bfd_get_gp_size (stdoutput))
4035 sc = sc_Undefined;
4036 else
4037 {
4038 sc = sc_SUndefined;
4039 sym_ptr->ecoff_sym.asym.value = s;
4040 }
4041 #ifdef S_SET_SIZE
4042 S_SET_SIZE (as_sym, s);
4043 #endif
4044 }
4045 else if (S_IS_COMMON (as_sym))
4046 {
4047 if (S_GET_VALUE (as_sym) > 0
4048 && (S_GET_VALUE (as_sym)
4049 <= bfd_get_gp_size (stdoutput)))
4050 sc = sc_SCommon;
4051 else
4052 sc = sc_Common;
4053 }
4054 else if (seg == text_section)
4055 sc = sc_Text;
4056 else if (seg == data_section)
4057 sc = sc_Data;
4058 else if (strcmp (segname, ".rdata") == 0
4059 || strcmp (segname, ".rodata") == 0)
4060 sc = sc_RData;
4061 else if (strcmp (segname, ".sdata") == 0)
4062 sc = sc_SData;
4063 else if (seg == bss_section)
4064 sc = sc_Bss;
4065 else if (strcmp (segname, ".sbss") == 0)
4066 sc = sc_SBss;
4067 else if (seg == bfd_abs_section_ptr)
4068 sc = sc_Abs;
4069 else
4070 {
4071 /* This must be a user named section.
4072 This is not possible in ECOFF, but it
4073 is in ELF. */
4074 sc = sc_Data;
4075 }
4076
4077 sym_ptr->ecoff_sym.asym.st = (int) st;
4078 sym_ptr->ecoff_sym.asym.sc = (int) sc;
4079 }
4080
4081 /* This is just an external symbol if it is
4082 outside a procedure and it has a type.
4083 FIXME: g++ will generate symbols which have
4084 different names in the debugging information
4085 than the actual symbol. Should we handle
4086 them here? */
4087 if ((S_IS_EXTERNAL (as_sym)
4088 || S_IS_WEAK (as_sym)
4089 || ! S_IS_DEFINED (as_sym))
4090 && sym_ptr->proc_ptr == (proc_t *) NULL
4091 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil
4092 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym))
4093 local = 0;
4094
4095 /* This is just an external symbol if it is a
4096 common symbol. */
4097 if (S_IS_COMMON (as_sym))
4098 local = 0;
4099
4100 /* If an st_end symbol has an associated gas
4101 symbol, then it is a local label created for
4102 a .bend or .end directive. Stabs line
4103 numbers will have FAKE_LABEL_CHAR in the names. */
4104 if (local
4105 && sym_ptr->ecoff_sym.asym.st != st_End
4106 && strchr (sym_ptr->name, FAKE_LABEL_CHAR) == 0)
4107 sym_ptr->ecoff_sym.asym.iss =
4108 add_string (&fil_ptr->strings,
4109 fil_ptr->str_hash,
4110 sym_ptr->name,
4111 (shash_t **) NULL);
4112 }
4113
4114 /* We now know the index of this symbol; fill in
4115 locations that have been waiting for that
4116 information. */
4117 if (sym_ptr->begin_ptr != (localsym_t *) NULL)
4118 {
4119 localsym_t *begin_ptr;
4120 st_t begin_type;
4121
4122 know (local);
4123 begin_ptr = sym_ptr->begin_ptr;
4124 know (begin_ptr->sym_index != -1);
4125 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index;
4126 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4127 sym_ptr->ecoff_sym.asym.iss =
4128 begin_ptr->ecoff_sym.asym.iss;
4129
4130 begin_type = (st_t) begin_ptr->ecoff_sym.asym.st;
4131 if (begin_type == st_File
4132 || begin_type == st_Block)
4133 {
4134 begin_ptr->ecoff_sym.asym.index =
4135 isym - ifilesym + 1;
4136 (*swap_sym_out) (stdoutput,
4137 &begin_ptr->ecoff_sym.asym,
4138 (*buf
4139 + offset
4140 + (begin_ptr->sym_index
4141 * external_sym_size)));
4142 }
4143 else
4144 {
4145 know (begin_ptr->index_ptr != (aux_t *) NULL);
4146 begin_ptr->index_ptr->data.isym =
4147 isym - ifilesym + 1;
4148 }
4149
4150 /* The value of the symbol marking the end of a
4151 procedure is the size of the procedure. The
4152 value of the symbol marking the end of a
4153 block is the offset from the start of the
4154 procedure to the block. */
4155 if (begin_type == st_Proc
4156 || begin_type == st_StaticProc)
4157 {
4158 know (as_sym != (symbolS *) NULL);
4159 know (begin_ptr->as_sym != (symbolS *) NULL);
4160 if (S_GET_SEGMENT (as_sym)
4161 != S_GET_SEGMENT (begin_ptr->as_sym))
4162 as_warn (_(".begin/.bend in different segments"));
4163 sym_ptr->ecoff_sym.asym.value =
4164 (S_GET_VALUE (as_sym)
4165 - S_GET_VALUE (begin_ptr->as_sym));
4166
4167 /* If the size is odd, this is probably a
4168 mips16 function; force it to be even. */
4169 if ((sym_ptr->ecoff_sym.asym.value & 1) != 0)
4170 ++sym_ptr->ecoff_sym.asym.value;
4171
4172 #ifdef S_SET_SIZE
4173 S_SET_SIZE (begin_ptr->as_sym,
4174 sym_ptr->ecoff_sym.asym.value);
4175 #endif
4176 }
4177 else if (begin_type == st_Block
4178 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4179 {
4180 symbolS *begin_sym;
4181
4182 know (as_sym != (symbolS *) NULL);
4183 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4184 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4185 if (S_GET_SEGMENT (as_sym)
4186 != S_GET_SEGMENT (begin_sym))
4187 as_warn (_(".begin/.bend in different segments"));
4188 sym_ptr->ecoff_sym.asym.value =
4189 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4190 }
4191 }
4192
4193 for (f = sym_ptr->forward_ref;
4194 f != (forward_t *) NULL;
4195 f = f->next)
4196 {
4197 know (local);
4198 f->ifd_ptr->data.isym = fil_ptr->file_index;
4199 f->index_ptr->data.rndx.index = isym - ifilesym;
4200 }
4201
4202 if (local)
4203 {
4204 if ((bfd_size_type)(*bufend - sym_out) < external_sym_size)
4205 sym_out = ecoff_add_bytes (buf, bufend,
4206 sym_out,
4207 external_sym_size);
4208 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym,
4209 sym_out);
4210 sym_out += external_sym_size;
4211
4212 sym_ptr->sym_index = isym;
4213
4214 if (sym_ptr->proc_ptr != (proc_t *) NULL
4215 && sym_ptr->proc_ptr->sym == sym_ptr)
4216 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym;
4217
4218 ++isym;
4219 }
4220
4221 /* Record the local symbol index and file number in
4222 case this is an external symbol. Note that this
4223 destroys the asym.index field. */
4224 if (as_sym != (symbolS *) NULL
4225 && symbol_get_obj (as_sym)->ecoff_symbol == sym_ptr)
4226 {
4227 if ((sym_ptr->ecoff_sym.asym.st == st_Proc
4228 || sym_ptr->ecoff_sym.asym.st == st_StaticProc)
4229 && local)
4230 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1;
4231 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index;
4232
4233 /* Don't try to merge an FDR which has an
4234 external symbol attached to it. */
4235 if (S_IS_EXTERNAL (as_sym) || S_IS_WEAK (as_sym))
4236 fil_ptr->fdr.fMerge = 0;
4237 }
4238 }
4239 }
4240 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase;
4241 }
4242 }
4243
4244 return offset + isym * external_sym_size;
4245 }
4246
4247 /* Swap out the procedure information. */
4248
4249 static unsigned long
4250 ecoff_build_procs (const struct ecoff_debug_swap *backend,
4251 char **buf,
4252 char **bufend,
4253 unsigned long offset)
4254 {
4255 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4256 void (* const swap_pdr_out) (bfd *, const PDR *, void *)
4257 = backend->swap_pdr_out;
4258 char *pdr_out;
4259 long iproc;
4260 vlinks_t *file_link;
4261
4262 pdr_out = *buf + offset;
4263
4264 iproc = 0;
4265
4266 /* The procedures are stored by file. */
4267 for (file_link = file_desc.first;
4268 file_link != (vlinks_t *) NULL;
4269 file_link = file_link->next)
4270 {
4271 int fil_cnt;
4272 efdr_t *fil_ptr;
4273 efdr_t *fil_end;
4274
4275 if (file_link->next == (vlinks_t *) NULL)
4276 fil_cnt = file_desc.objects_last_page;
4277 else
4278 fil_cnt = file_desc.objects_per_page;
4279 fil_ptr = file_link->datum->file;
4280 fil_end = fil_ptr + fil_cnt;
4281 for (; fil_ptr < fil_end; fil_ptr++)
4282 {
4283 vlinks_t *proc_link;
4284 int first;
4285
4286 fil_ptr->fdr.ipdFirst = iproc;
4287 first = 1;
4288 for (proc_link = fil_ptr->procs.first;
4289 proc_link != (vlinks_t *) NULL;
4290 proc_link = proc_link->next)
4291 {
4292 int prc_cnt;
4293 proc_t *proc_ptr;
4294 proc_t *proc_end;
4295
4296 if (proc_link->next == (vlinks_t *) NULL)
4297 prc_cnt = fil_ptr->procs.objects_last_page;
4298 else
4299 prc_cnt = fil_ptr->procs.objects_per_page;
4300 proc_ptr = proc_link->datum->proc;
4301 proc_end = proc_ptr + prc_cnt;
4302 for (; proc_ptr < proc_end; proc_ptr++)
4303 {
4304 symbolS *adr_sym;
4305 unsigned long adr;
4306
4307 adr_sym = proc_ptr->sym->as_sym;
4308 adr = (S_GET_VALUE (adr_sym)
4309 + bfd_section_vma (S_GET_SEGMENT (adr_sym)));
4310 if (first)
4311 {
4312 /* This code used to force the adr of the very
4313 first fdr to be 0. However, the native tools
4314 don't do that, and I can't remember why it
4315 used to work that way, so I took it out. */
4316 fil_ptr->fdr.adr = adr;
4317 first = 0;
4318 }
4319 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr;
4320 if ((bfd_size_type)(*bufend - pdr_out) < external_pdr_size)
4321 pdr_out = ecoff_add_bytes (buf, bufend,
4322 pdr_out,
4323 external_pdr_size);
4324 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out);
4325 pdr_out += external_pdr_size;
4326 ++iproc;
4327 }
4328 }
4329 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst;
4330 }
4331 }
4332
4333 return offset + iproc * external_pdr_size;
4334 }
4335
4336 /* Swap out the aux information. */
4337
4338 static unsigned long
4339 ecoff_build_aux (const struct ecoff_debug_swap *backend,
4340 char **buf,
4341 char **bufend,
4342 unsigned long offset)
4343 {
4344 int bigendian;
4345 union aux_ext *aux_out;
4346 long iaux;
4347 vlinks_t *file_link;
4348
4349 bigendian = bfd_big_endian (stdoutput);
4350
4351 aux_out = (union aux_ext *) (*buf + offset);
4352
4353 iaux = 0;
4354
4355 /* The aux entries are stored by file. */
4356 for (file_link = file_desc.first;
4357 file_link != (vlinks_t *) NULL;
4358 file_link = file_link->next)
4359 {
4360 int fil_cnt;
4361 efdr_t *fil_ptr;
4362 efdr_t *fil_end;
4363
4364 if (file_link->next == (vlinks_t *) NULL)
4365 fil_cnt = file_desc.objects_last_page;
4366 else
4367 fil_cnt = file_desc.objects_per_page;
4368 fil_ptr = file_link->datum->file;
4369 fil_end = fil_ptr + fil_cnt;
4370 for (; fil_ptr < fil_end; fil_ptr++)
4371 {
4372 vlinks_t *aux_link;
4373
4374 fil_ptr->fdr.fBigendian = bigendian;
4375 fil_ptr->fdr.iauxBase = iaux;
4376 for (aux_link = fil_ptr->aux_syms.first;
4377 aux_link != (vlinks_t *) NULL;
4378 aux_link = aux_link->next)
4379 {
4380 int aux_cnt;
4381 aux_t *aux_ptr;
4382 aux_t *aux_end;
4383
4384 if (aux_link->next == (vlinks_t *) NULL)
4385 aux_cnt = fil_ptr->aux_syms.objects_last_page;
4386 else
4387 aux_cnt = fil_ptr->aux_syms.objects_per_page;
4388 aux_ptr = aux_link->datum->aux;
4389 aux_end = aux_ptr + aux_cnt;
4390 for (; aux_ptr < aux_end; aux_ptr++)
4391 {
4392 if ((unsigned long) (*bufend - (char *) aux_out)
4393 < sizeof (union aux_ext))
4394 aux_out = ((union aux_ext *)
4395 ecoff_add_bytes (buf, bufend,
4396 (char *) aux_out,
4397 sizeof (union aux_ext)));
4398 switch (aux_ptr->type)
4399 {
4400 case aux_tir:
4401 (*backend->swap_tir_out) (bigendian,
4402 &aux_ptr->data.ti,
4403 &aux_out->a_ti);
4404 break;
4405 case aux_rndx:
4406 (*backend->swap_rndx_out) (bigendian,
4407 &aux_ptr->data.rndx,
4408 &aux_out->a_rndx);
4409 break;
4410 case aux_dnLow:
4411 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow,
4412 aux_out);
4413 break;
4414 case aux_dnHigh:
4415 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh,
4416 aux_out);
4417 break;
4418 case aux_isym:
4419 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym,
4420 aux_out);
4421 break;
4422 case aux_iss:
4423 AUX_PUT_ISS (bigendian, aux_ptr->data.iss,
4424 aux_out);
4425 break;
4426 case aux_width:
4427 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width,
4428 aux_out);
4429 break;
4430 case aux_count:
4431 AUX_PUT_COUNT (bigendian, aux_ptr->data.count,
4432 aux_out);
4433 break;
4434 }
4435
4436 ++aux_out;
4437 ++iaux;
4438 }
4439 }
4440 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase;
4441 }
4442 }
4443
4444 return ecoff_padding_adjust (backend, buf, bufend,
4445 offset + iaux * sizeof (union aux_ext),
4446 (char **) NULL);
4447 }
4448
4449 /* Copy out the strings from a varray_t. This returns the number of
4450 bytes copied, rather than the new offset. */
4451
4452 static unsigned long
4453 ecoff_build_strings (char **buf,
4454 char **bufend,
4455 unsigned long offset,
4456 varray_t *vp)
4457 {
4458 unsigned long istr;
4459 char *str_out;
4460 vlinks_t *str_link;
4461
4462 str_out = *buf + offset;
4463
4464 istr = 0;
4465
4466 for (str_link = vp->first;
4467 str_link != (vlinks_t *) NULL;
4468 str_link = str_link->next)
4469 {
4470 unsigned long str_cnt;
4471
4472 if (str_link->next == (vlinks_t *) NULL)
4473 str_cnt = vp->objects_last_page;
4474 else
4475 str_cnt = vp->objects_per_page;
4476
4477 if ((unsigned long)(*bufend - str_out) < str_cnt)
4478 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt);
4479
4480 memcpy (str_out, str_link->datum->byte, str_cnt);
4481 str_out += str_cnt;
4482 istr += str_cnt;
4483 }
4484
4485 return istr;
4486 }
4487
4488 /* Dump out the local strings. */
4489
4490 static unsigned long
4491 ecoff_build_ss (const struct ecoff_debug_swap *backend,
4492 char **buf,
4493 char **bufend,
4494 unsigned long offset)
4495 {
4496 long iss;
4497 vlinks_t *file_link;
4498
4499 iss = 0;
4500
4501 for (file_link = file_desc.first;
4502 file_link != (vlinks_t *) NULL;
4503 file_link = file_link->next)
4504 {
4505 int fil_cnt;
4506 efdr_t *fil_ptr;
4507 efdr_t *fil_end;
4508
4509 if (file_link->next == (vlinks_t *) NULL)
4510 fil_cnt = file_desc.objects_last_page;
4511 else
4512 fil_cnt = file_desc.objects_per_page;
4513 fil_ptr = file_link->datum->file;
4514 fil_end = fil_ptr + fil_cnt;
4515 for (; fil_ptr < fil_end; fil_ptr++)
4516 {
4517 long ss_cnt;
4518
4519 fil_ptr->fdr.issBase = iss;
4520 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss,
4521 &fil_ptr->strings);
4522 fil_ptr->fdr.cbSs = ss_cnt;
4523 iss += ss_cnt;
4524 }
4525 }
4526
4527 return ecoff_padding_adjust (backend, buf, bufend, offset + iss,
4528 (char **) NULL);
4529 }
4530
4531 /* Swap out the file descriptors. */
4532
4533 static unsigned long
4534 ecoff_build_fdr (const struct ecoff_debug_swap *backend,
4535 char **buf,
4536 char **bufend,
4537 unsigned long offset)
4538 {
4539 const bfd_size_type external_fdr_size = backend->external_fdr_size;
4540 void (* const swap_fdr_out) (bfd *, const FDR *, void *)
4541 = backend->swap_fdr_out;
4542 long ifile;
4543 char *fdr_out;
4544 vlinks_t *file_link;
4545
4546 ifile = 0;
4547
4548 fdr_out = *buf + offset;
4549
4550 for (file_link = file_desc.first;
4551 file_link != (vlinks_t *) NULL;
4552 file_link = file_link->next)
4553 {
4554 int fil_cnt;
4555 efdr_t *fil_ptr;
4556 efdr_t *fil_end;
4557
4558 if (file_link->next == (vlinks_t *) NULL)
4559 fil_cnt = file_desc.objects_last_page;
4560 else
4561 fil_cnt = file_desc.objects_per_page;
4562 fil_ptr = file_link->datum->file;
4563 fil_end = fil_ptr + fil_cnt;
4564 for (; fil_ptr < fil_end; fil_ptr++)
4565 {
4566 if ((bfd_size_type)(*bufend - fdr_out) < external_fdr_size)
4567 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out,
4568 external_fdr_size);
4569 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out);
4570 fdr_out += external_fdr_size;
4571 ++ifile;
4572 }
4573 }
4574
4575 return offset + ifile * external_fdr_size;
4576 }
4577
4578 /* Set up the external symbols. These are supposed to be handled by
4579 the backend. This routine just gets the right information and
4580 calls a backend function to deal with it. */
4581
4582 static void
4583 ecoff_setup_ext (void)
4584 {
4585 symbolS *sym;
4586
4587 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4588 {
4589 if (symbol_get_obj (sym)->ecoff_symbol == NULL)
4590 continue;
4591
4592 /* If this is a local symbol, then force the fields to zero. */
4593 if (! S_IS_EXTERNAL (sym)
4594 && ! S_IS_WEAK (sym)
4595 && S_IS_DEFINED (sym))
4596 {
4597 struct localsym *lsym;
4598
4599 lsym = symbol_get_obj (sym)->ecoff_symbol;
4600 lsym->ecoff_sym.asym.value = 0;
4601 lsym->ecoff_sym.asym.st = (int) st_Nil;
4602 lsym->ecoff_sym.asym.sc = (int) sc_Nil;
4603 lsym->ecoff_sym.asym.index = indexNil;
4604 }
4605
4606 obj_ecoff_set_ext (sym, &symbol_get_obj (sym)->ecoff_symbol->ecoff_sym);
4607 }
4608 }
4609
4610 /* Build the ECOFF debugging information. */
4611
4612 unsigned long
4613 ecoff_build_debug (HDRR *hdr,
4614 char **bufp,
4615 const struct ecoff_debug_swap *backend)
4616 {
4617 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4618 tag_t *ptag;
4619 tag_t *ptag_next;
4620 efdr_t *fil_ptr;
4621 int end_warning;
4622 efdr_t *hold_file_ptr;
4623 proc_t *hold_proc_ptr;
4624 symbolS *sym;
4625 char *buf;
4626 char *bufend;
4627 unsigned long offset;
4628
4629 /* Make sure we have a file. */
4630 if (first_file == (efdr_t *) NULL)
4631 add_file ((const char *) NULL, 0, 1);
4632
4633 /* Handle any top level tags. */
4634 for (ptag = top_tag_head->first_tag;
4635 ptag != (tag_t *) NULL;
4636 ptag = ptag_next)
4637 {
4638 if (ptag->forward_ref != (forward_t *) NULL)
4639 add_unknown_tag (ptag);
4640
4641 ptag_next = ptag->same_block;
4642 ptag->hash_ptr->tag_ptr = ptag->same_name;
4643 free_tag (ptag);
4644 }
4645
4646 free_thead (top_tag_head);
4647
4648 /* Look through the symbols. Add debugging information for each
4649 symbol that has not already received it. */
4650 hold_file_ptr = cur_file_ptr;
4651 hold_proc_ptr = cur_proc_ptr;
4652 cur_proc_ptr = (proc_t *) NULL;
4653 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4654 {
4655 if (symbol_get_obj (sym)->ecoff_symbol != NULL
4656 || symbol_get_obj (sym)->ecoff_file == (efdr_t *) NULL
4657 || (symbol_get_bfdsym (sym)->flags & BSF_SECTION_SYM) != 0)
4658 continue;
4659
4660 cur_file_ptr = symbol_get_obj (sym)->ecoff_file;
4661 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym,
4662 (bfd_vma) 0, S_GET_VALUE (sym), indexNil);
4663 }
4664 cur_proc_ptr = hold_proc_ptr;
4665 cur_file_ptr = hold_file_ptr;
4666
4667 /* Output an ending symbol for all the files. We have to do this
4668 here for the last file, so we may as well do it for all of the
4669 files. */
4670 end_warning = 0;
4671 for (fil_ptr = first_file;
4672 fil_ptr != (efdr_t *) NULL;
4673 fil_ptr = fil_ptr->next_file)
4674 {
4675 cur_file_ptr = fil_ptr;
4676 while (cur_file_ptr->cur_scope != (scope_t *) NULL
4677 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL)
4678 {
4679 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev;
4680 if (! end_warning && ! cur_file_ptr->fake)
4681 {
4682 as_warn (_("missing .end or .bend at end of file"));
4683 end_warning = 1;
4684 }
4685 }
4686 if (cur_file_ptr->cur_scope != (scope_t *) NULL)
4687 (void) add_ecoff_symbol ((const char *) NULL,
4688 st_End, sc_Text,
4689 (symbolS *) NULL,
4690 (bfd_vma) 0,
4691 (symint_t) 0,
4692 (symint_t) 0);
4693 }
4694
4695 /* Build the symbolic information. */
4696 offset = 0;
4697 buf = XNEWVEC (char, PAGE_SIZE);
4698 bufend = buf + PAGE_SIZE;
4699
4700 /* Build the line number information. */
4701 hdr->cbLineOffset = offset;
4702 offset = ecoff_build_lineno (backend, &buf, &bufend, offset,
4703 &hdr->ilineMax);
4704 hdr->cbLine = offset - hdr->cbLineOffset;
4705
4706 /* We don't use dense numbers at all. */
4707 hdr->idnMax = 0;
4708 hdr->cbDnOffset = 0;
4709
4710 /* We can't build the PDR table until we have built the symbols,
4711 because a PDR contains a symbol index. However, we set aside
4712 space at this point. */
4713 hdr->ipdMax = proc_cnt;
4714 hdr->cbPdOffset = offset;
4715 if ((bfd_size_type)(bufend - (buf + offset)) < proc_cnt * external_pdr_size)
4716 (void) ecoff_add_bytes (&buf, &bufend, buf + offset,
4717 proc_cnt * external_pdr_size);
4718 offset += proc_cnt * external_pdr_size;
4719
4720 /* Build the local symbols. */
4721 hdr->cbSymOffset = offset;
4722 offset = ecoff_build_symbols (backend, &buf, &bufend, offset);
4723 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size;
4724
4725 /* Building the symbols initializes the symbol index in the PDR's.
4726 Now we can swap out the PDR's. */
4727 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset);
4728
4729 /* We don't use optimization symbols. */
4730 hdr->ioptMax = 0;
4731 hdr->cbOptOffset = 0;
4732
4733 /* Swap out the auxiliary type information. */
4734 hdr->cbAuxOffset = offset;
4735 offset = ecoff_build_aux (backend, &buf, &bufend, offset);
4736 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext);
4737
4738 /* Copy out the local strings. */
4739 hdr->cbSsOffset = offset;
4740 offset = ecoff_build_ss (backend, &buf, &bufend, offset);
4741 hdr->issMax = offset - hdr->cbSsOffset;
4742
4743 /* We don't use relative file descriptors. */
4744 hdr->crfd = 0;
4745 hdr->cbRfdOffset = 0;
4746
4747 /* Swap out the file descriptors. */
4748 hdr->cbFdOffset = offset;
4749 offset = ecoff_build_fdr (backend, &buf, &bufend, offset);
4750 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size;
4751
4752 /* Set up the external symbols, which are handled by the BFD back
4753 end. */
4754 hdr->issExtMax = 0;
4755 hdr->cbSsExtOffset = 0;
4756 hdr->iextMax = 0;
4757 hdr->cbExtOffset = 0;
4758 ecoff_setup_ext ();
4759
4760 know ((offset & (backend->debug_align - 1)) == 0);
4761
4762 /* FIXME: This value should be determined from the .verstamp directive,
4763 with reasonable defaults in config files. */
4764 #ifdef TC_ALPHA
4765 hdr->vstamp = 0x030b;
4766 #else
4767 hdr->vstamp = 0x020b;
4768 #endif
4769
4770 *bufp = buf;
4771 return offset;
4772 }
4773 \f
4774 /* Allocate a cluster of pages. */
4775
4776 #ifndef MALLOC_CHECK
4777
4778 static page_type *
4779 allocate_cluster (unsigned long npages)
4780 {
4781 page_type *value = (page_type *) xmalloc (npages * PAGE_USIZE);
4782
4783 #ifdef ECOFF_DEBUG
4784 if (debug > 3)
4785 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value);
4786 #endif
4787
4788 memset (value, 0, npages * PAGE_USIZE);
4789
4790 return value;
4791 }
4792
4793 static page_type *cluster_ptr = NULL;
4794 static unsigned long pages_left = 0;
4795
4796 #endif /* MALLOC_CHECK */
4797
4798 /* Allocate one page (which is initialized to 0). */
4799
4800 static page_type *
4801 allocate_page (void)
4802 {
4803 #ifndef MALLOC_CHECK
4804
4805 if (pages_left == 0)
4806 {
4807 pages_left = MAX_CLUSTER_PAGES;
4808 cluster_ptr = allocate_cluster (pages_left);
4809 }
4810
4811 pages_left--;
4812 return cluster_ptr++;
4813
4814 #else /* MALLOC_CHECK */
4815
4816 page_type *ptr;
4817
4818 ptr = xmalloc (PAGE_USIZE);
4819 memset (ptr, 0, PAGE_USIZE);
4820 return ptr;
4821
4822 #endif /* MALLOC_CHECK */
4823 }
4824 \f
4825 /* Allocate scoping information. */
4826
4827 static scope_t *
4828 allocate_scope (void)
4829 {
4830 scope_t *ptr;
4831 static scope_t initial_scope;
4832
4833 #ifndef MALLOC_CHECK
4834
4835 ptr = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4836 if (ptr != (scope_t *) NULL)
4837 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr->free;
4838 else
4839 {
4840 int unallocated = alloc_counts[(int) alloc_type_scope].unallocated;
4841 page_type *cur_page = alloc_counts[(int) alloc_type_scope].cur_page;
4842
4843 if (unallocated == 0)
4844 {
4845 unallocated = PAGE_SIZE / sizeof (scope_t);
4846 alloc_counts[(int) alloc_type_scope].cur_page = cur_page = allocate_page ();
4847 alloc_counts[(int) alloc_type_scope].total_pages++;
4848 }
4849
4850 ptr = &cur_page->scope[--unallocated];
4851 alloc_counts[(int) alloc_type_scope].unallocated = unallocated;
4852 }
4853
4854 #else
4855
4856 ptr = XNEW (scope_t);
4857
4858 #endif
4859
4860 alloc_counts[(int) alloc_type_scope].total_alloc++;
4861 *ptr = initial_scope;
4862 return ptr;
4863 }
4864
4865 /* Free scoping information. */
4866
4867 static void
4868 free_scope (scope_t *ptr)
4869 {
4870 alloc_counts[(int) alloc_type_scope].total_free++;
4871
4872 #ifndef MALLOC_CHECK
4873 ptr->free = alloc_counts[(int) alloc_type_scope].free_list.f_scope;
4874 alloc_counts[(int) alloc_type_scope].free_list.f_scope = ptr;
4875 #else
4876 free ((void *) ptr);
4877 #endif
4878 }
4879 \f
4880 /* Allocate links for pages in a virtual array. */
4881
4882 static vlinks_t *
4883 allocate_vlinks (void)
4884 {
4885 vlinks_t *ptr;
4886 static vlinks_t initial_vlinks;
4887
4888 #ifndef MALLOC_CHECK
4889
4890 int unallocated = alloc_counts[(int) alloc_type_vlinks].unallocated;
4891 page_type *cur_page = alloc_counts[(int) alloc_type_vlinks].cur_page;
4892
4893 if (unallocated == 0)
4894 {
4895 unallocated = PAGE_SIZE / sizeof (vlinks_t);
4896 alloc_counts[(int) alloc_type_vlinks].cur_page = cur_page = allocate_page ();
4897 alloc_counts[(int) alloc_type_vlinks].total_pages++;
4898 }
4899
4900 ptr = &cur_page->vlinks[--unallocated];
4901 alloc_counts[(int) alloc_type_vlinks].unallocated = unallocated;
4902
4903 #else
4904
4905 ptr = XNEW (vlinks_t);
4906
4907 #endif
4908
4909 alloc_counts[(int) alloc_type_vlinks].total_alloc++;
4910 *ptr = initial_vlinks;
4911 return ptr;
4912 }
4913 \f
4914 /* Allocate string hash buckets. */
4915
4916 static shash_t *
4917 allocate_shash (void)
4918 {
4919 shash_t *ptr;
4920 static shash_t initial_shash;
4921
4922 #ifndef MALLOC_CHECK
4923
4924 int unallocated = alloc_counts[(int) alloc_type_shash].unallocated;
4925 page_type *cur_page = alloc_counts[(int) alloc_type_shash].cur_page;
4926
4927 if (unallocated == 0)
4928 {
4929 unallocated = PAGE_SIZE / sizeof (shash_t);
4930 alloc_counts[(int) alloc_type_shash].cur_page = cur_page = allocate_page ();
4931 alloc_counts[(int) alloc_type_shash].total_pages++;
4932 }
4933
4934 ptr = &cur_page->shash[--unallocated];
4935 alloc_counts[(int) alloc_type_shash].unallocated = unallocated;
4936
4937 #else
4938
4939 ptr = XNEW (shash_t);
4940
4941 #endif
4942
4943 alloc_counts[(int) alloc_type_shash].total_alloc++;
4944 *ptr = initial_shash;
4945 return ptr;
4946 }
4947 \f
4948 /* Allocate type hash buckets. */
4949
4950 static thash_t *
4951 allocate_thash (void)
4952 {
4953 thash_t *ptr;
4954 static thash_t initial_thash;
4955
4956 #ifndef MALLOC_CHECK
4957
4958 int unallocated = alloc_counts[(int) alloc_type_thash].unallocated;
4959 page_type *cur_page = alloc_counts[(int) alloc_type_thash].cur_page;
4960
4961 if (unallocated == 0)
4962 {
4963 unallocated = PAGE_SIZE / sizeof (thash_t);
4964 alloc_counts[(int) alloc_type_thash].cur_page = cur_page = allocate_page ();
4965 alloc_counts[(int) alloc_type_thash].total_pages++;
4966 }
4967
4968 ptr = &cur_page->thash[--unallocated];
4969 alloc_counts[(int) alloc_type_thash].unallocated = unallocated;
4970
4971 #else
4972
4973 ptr = XNEW (thash_t);
4974
4975 #endif
4976
4977 alloc_counts[(int) alloc_type_thash].total_alloc++;
4978 *ptr = initial_thash;
4979 return ptr;
4980 }
4981 \f
4982 /* Allocate structure, union, or enum tag information. */
4983
4984 static tag_t *
4985 allocate_tag (void)
4986 {
4987 tag_t *ptr;
4988 static tag_t initial_tag;
4989
4990 #ifndef MALLOC_CHECK
4991
4992 ptr = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
4993 if (ptr != (tag_t *) NULL)
4994 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr->free;
4995 else
4996 {
4997 int unallocated = alloc_counts[(int) alloc_type_tag].unallocated;
4998 page_type *cur_page = alloc_counts[(int) alloc_type_tag].cur_page;
4999
5000 if (unallocated == 0)
5001 {
5002 unallocated = PAGE_SIZE / sizeof (tag_t);
5003 alloc_counts[(int) alloc_type_tag].cur_page = cur_page = allocate_page ();
5004 alloc_counts[(int) alloc_type_tag].total_pages++;
5005 }
5006
5007 ptr = &cur_page->tag[--unallocated];
5008 alloc_counts[(int) alloc_type_tag].unallocated = unallocated;
5009 }
5010
5011 #else
5012
5013 ptr = XNEW (tag_t);
5014
5015 #endif
5016
5017 alloc_counts[(int) alloc_type_tag].total_alloc++;
5018 *ptr = initial_tag;
5019 return ptr;
5020 }
5021
5022 /* Free scoping information. */
5023
5024 static void
5025 free_tag (tag_t *ptr)
5026 {
5027 alloc_counts[(int) alloc_type_tag].total_free++;
5028
5029 #ifndef MALLOC_CHECK
5030 ptr->free = alloc_counts[(int) alloc_type_tag].free_list.f_tag;
5031 alloc_counts[(int) alloc_type_tag].free_list.f_tag = ptr;
5032 #else
5033 free ((PTR_T) ptr);
5034 #endif
5035 }
5036 \f
5037 /* Allocate forward reference to a yet unknown tag. */
5038
5039 static forward_t *
5040 allocate_forward (void)
5041 {
5042 forward_t *ptr;
5043 static forward_t initial_forward;
5044
5045 #ifndef MALLOC_CHECK
5046
5047 int unallocated = alloc_counts[(int) alloc_type_forward].unallocated;
5048 page_type *cur_page = alloc_counts[(int) alloc_type_forward].cur_page;
5049
5050 if (unallocated == 0)
5051 {
5052 unallocated = PAGE_SIZE / sizeof (forward_t);
5053 alloc_counts[(int) alloc_type_forward].cur_page = cur_page = allocate_page ();
5054 alloc_counts[(int) alloc_type_forward].total_pages++;
5055 }
5056
5057 ptr = &cur_page->forward[--unallocated];
5058 alloc_counts[(int) alloc_type_forward].unallocated = unallocated;
5059
5060 #else
5061
5062 ptr = XNEW (forward_t);
5063
5064 #endif
5065
5066 alloc_counts[(int) alloc_type_forward].total_alloc++;
5067 *ptr = initial_forward;
5068 return ptr;
5069 }
5070 \f
5071 /* Allocate head of type hash list. */
5072
5073 static thead_t *
5074 allocate_thead (void)
5075 {
5076 thead_t *ptr;
5077 static thead_t initial_thead;
5078
5079 #ifndef MALLOC_CHECK
5080
5081 ptr = alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5082 if (ptr != (thead_t *) NULL)
5083 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr->free;
5084 else
5085 {
5086 int unallocated = alloc_counts[(int) alloc_type_thead].unallocated;
5087 page_type *cur_page = alloc_counts[(int) alloc_type_thead].cur_page;
5088
5089 if (unallocated == 0)
5090 {
5091 unallocated = PAGE_SIZE / sizeof (thead_t);
5092 alloc_counts[(int) alloc_type_thead].cur_page = cur_page = allocate_page ();
5093 alloc_counts[(int) alloc_type_thead].total_pages++;
5094 }
5095
5096 ptr = &cur_page->thead[--unallocated];
5097 alloc_counts[(int) alloc_type_thead].unallocated = unallocated;
5098 }
5099
5100 #else
5101
5102 ptr = XNEW (thead_t);
5103
5104 #endif
5105
5106 alloc_counts[(int) alloc_type_thead].total_alloc++;
5107 *ptr = initial_thead;
5108 return ptr;
5109 }
5110
5111 /* Free scoping information. */
5112
5113 static void
5114 free_thead (thead_t *ptr)
5115 {
5116 alloc_counts[(int) alloc_type_thead].total_free++;
5117
5118 #ifndef MALLOC_CHECK
5119 ptr->free = (thead_t *) alloc_counts[(int) alloc_type_thead].free_list.f_thead;
5120 alloc_counts[(int) alloc_type_thead].free_list.f_thead = ptr;
5121 #else
5122 free ((PTR_T) ptr);
5123 #endif
5124 }
5125 \f
5126 static lineno_list_t *
5127 allocate_lineno_list (void)
5128 {
5129 lineno_list_t *ptr;
5130 static lineno_list_t initial_lineno_list;
5131
5132 #ifndef MALLOC_CHECK
5133
5134 int unallocated = alloc_counts[(int) alloc_type_lineno].unallocated;
5135 page_type *cur_page = alloc_counts[(int) alloc_type_lineno].cur_page;
5136
5137 if (unallocated == 0)
5138 {
5139 unallocated = PAGE_SIZE / sizeof (lineno_list_t);
5140 alloc_counts[(int) alloc_type_lineno].cur_page = cur_page = allocate_page ();
5141 alloc_counts[(int) alloc_type_lineno].total_pages++;
5142 }
5143
5144 ptr = &cur_page->lineno[--unallocated];
5145 alloc_counts[(int) alloc_type_lineno].unallocated = unallocated;
5146
5147 #else
5148
5149 ptr = XNEW (lineno_list_t);
5150
5151 #endif
5152
5153 alloc_counts[(int) alloc_type_lineno].total_alloc++;
5154 *ptr = initial_lineno_list;
5155 return ptr;
5156 }
5157
5158 void
5159 ecoff_set_gp_prolog_size (int sz)
5160 {
5161 if (cur_proc_ptr == 0)
5162 return;
5163
5164 cur_proc_ptr->pdr.gp_prologue = sz;
5165 if (cur_proc_ptr->pdr.gp_prologue != sz)
5166 {
5167 as_warn (_("GP prologue size exceeds field size, using 0 instead"));
5168 cur_proc_ptr->pdr.gp_prologue = 0;
5169 }
5170
5171 cur_proc_ptr->pdr.gp_used = 1;
5172 }
5173
5174 int
5175 ecoff_no_current_file (void)
5176 {
5177 return cur_file_ptr == (efdr_t *) NULL;
5178 }
5179
5180 void
5181 ecoff_generate_asm_lineno (void)
5182 {
5183 unsigned int lineno;
5184 const char *filename;
5185 lineno_list_t *list;
5186
5187 filename = as_where (&lineno);
5188
5189 if (current_stabs_filename == (char *) NULL
5190 || filename_cmp (current_stabs_filename, filename))
5191 add_file (filename, 0, 1);
5192
5193 list = allocate_lineno_list ();
5194
5195 list->next = (lineno_list_t *) NULL;
5196 list->file = cur_file_ptr;
5197 list->proc = cur_proc_ptr;
5198 list->frag = frag_now;
5199 list->paddr = frag_now_fix ();
5200 list->lineno = lineno;
5201
5202 /* We don't want to merge files which have line numbers. */
5203 cur_file_ptr->fdr.fMerge = 0;
5204
5205 /* A .loc directive will sometimes appear before a .ent directive,
5206 which means that cur_proc_ptr will be NULL here. Arrange to
5207 patch this up. */
5208 if (cur_proc_ptr == (proc_t *) NULL)
5209 {
5210 lineno_list_t **pl;
5211
5212 pl = &noproc_lineno;
5213 while (*pl != (lineno_list_t *) NULL)
5214 pl = &(*pl)->next;
5215 *pl = list;
5216 }
5217 else
5218 {
5219 last_lineno = list;
5220 *last_lineno_ptr = list;
5221 last_lineno_ptr = &list->next;
5222 }
5223 }
5224
5225 #else
5226
5227 void
5228 ecoff_generate_asm_lineno (void)
5229 {
5230 }
5231
5232 #endif /* ECOFF_DEBUGGING */
GDB Binutils - Deliverables
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