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* ecoff.c (ecoff_build_lineno): Handle count correctly for last
[deliverable/binutils-gdb.git] / gas / ecoff.c
1 /* ECOFF debugging support.
2 Copyright (C) 1993 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 2, 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
22 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
23
24 #include "as.h"
25
26 /* This file is compiled conditionally for those targets which use
27 ECOFF debugging information (e.g., MIPS ECOFF, MIPS ELF, Alpha
28 ECOFF). */
29
30 #ifdef ECOFF_DEBUGGING
31
32 #include "coff/internal.h"
33 #include "coff/symconst.h"
34 #include "ecoff.h"
35 #include "aout/stab_gnu.h"
36
37 #include <ctype.h>
38
39 /* Why isn't this in coff/sym.h? */
40 #define ST_RFDESCAPE 0xfff
41
42 /* This file constructs the information used by the ECOFF debugging
43 format. It just builds a large block of data.
44
45 We support both ECOFF style debugging and stabs debugging (the
46 stabs symbols are encapsulated in ECOFF symbols). This should let
47 us handle anything the compiler might throw at us. */
48
49 /* Here is a brief description of the MIPS ECOFF symbol table, by
50 Michael Meissner. The MIPS symbol table has the following pieces:
51
52 Symbolic Header
53 |
54 +-- Auxiliary Symbols
55 |
56 +-- Dense number table
57 |
58 +-- Optimizer Symbols
59 |
60 +-- External Strings
61 |
62 +-- External Symbols
63 |
64 +-- Relative file descriptors
65 |
66 +-- File table
67 |
68 +-- Procedure table
69 |
70 +-- Line number table
71 |
72 +-- Local Strings
73 |
74 +-- Local Symbols
75
76 The symbolic header points to each of the other tables, and also
77 contains the number of entries. It also contains a magic number
78 and MIPS compiler version number, such as 2.0.
79
80 The auxiliary table is a series of 32 bit integers, that are
81 referenced as needed from the local symbol table. Unlike standard
82 COFF, the aux. information does not follow the symbol that uses
83 it, but rather is a separate table. In theory, this would allow
84 the MIPS compilers to collapse duplicate aux. entries, but I've not
85 noticed this happening with the 1.31 compiler suite. The different
86 types of aux. entries are:
87
88 1) dnLow: Low bound on array dimension.
89
90 2) dnHigh: High bound on array dimension.
91
92 3) isym: Index to the local symbol which is the start of the
93 function for the end of function first aux. entry.
94
95 4) width: Width of structures and bitfields.
96
97 5) count: Count of ranges for variant part.
98
99 6) rndx: A relative index into the symbol table. The relative
100 index field has two parts: rfd which is a pointer into the
101 relative file index table or ST_RFDESCAPE which says the next
102 aux. entry is the file number, and index: which is the pointer
103 into the local symbol within a given file table. This is for
104 things like references to types defined in another file.
105
106 7) Type information: This is like the COFF type bits, except it
107 is 32 bits instead of 16; they still have room to add new
108 basic types; and they can handle more than 6 levels of array,
109 pointer, function, etc. Each type information field contains
110 the following structure members:
111
112 a) fBitfield: a bit that says this is a bitfield, and the
113 size in bits follows as the next aux. entry.
114
115 b) continued: a bit that says the next aux. entry is a
116 continuation of the current type information (in case
117 there are more than 6 levels of array/ptr/function).
118
119 c) bt: an integer containing the base type before adding
120 array, pointer, function, etc. qualifiers. The
121 current base types that I have documentation for are:
122
123 btNil -- undefined
124 btAdr -- address - integer same size as ptr
125 btChar -- character
126 btUChar -- unsigned character
127 btShort -- short
128 btUShort -- unsigned short
129 btInt -- int
130 btUInt -- unsigned int
131 btLong -- long
132 btULong -- unsigned long
133 btFloat -- float (real)
134 btDouble -- Double (real)
135 btStruct -- Structure (Record)
136 btUnion -- Union (variant)
137 btEnum -- Enumerated
138 btTypedef -- defined via a typedef isymRef
139 btRange -- subrange of int
140 btSet -- pascal sets
141 btComplex -- fortran complex
142 btDComplex -- fortran double complex
143 btIndirect -- forward or unnamed typedef
144 btFixedDec -- Fixed Decimal
145 btFloatDec -- Float Decimal
146 btString -- Varying Length Character String
147 btBit -- Aligned Bit String
148 btPicture -- Picture
149 btVoid -- Void (MIPS cc revision >= 2.00)
150
151 d) tq0 - tq5: type qualifier fields as needed. The
152 current type qualifier fields I have documentation for
153 are:
154
155 tqNil -- no more qualifiers
156 tqPtr -- pointer
157 tqProc -- procedure
158 tqArray -- array
159 tqFar -- 8086 far pointers
160 tqVol -- volatile
161
162
163 The dense number table is used in the front ends, and disappears by
164 the time the .o is created.
165
166 With the 1.31 compiler suite, the optimization symbols don't seem
167 to be used as far as I can tell.
168
169 The linker is the first entity that creates the relative file
170 descriptor table, and I believe it is used so that the individual
171 file table pointers don't have to be rewritten when the objects are
172 merged together into the program file.
173
174 Unlike COFF, the basic symbol & string tables are split into
175 external and local symbols/strings. The relocation information
176 only goes off of the external symbol table, and the debug
177 information only goes off of the internal symbol table. The
178 external symbols can have links to an appropriate file index and
179 symbol within the file to give it the appropriate type information.
180 Because of this, the external symbols are actually larger than the
181 internal symbols (to contain the link information), and contain the
182 local symbol structure as a member, though this member is not the
183 first member of the external symbol structure (!). I suspect this
184 split is to make strip easier to deal with.
185
186 Each file table has offsets for where the line numbers, local
187 strings, local symbols, and procedure table starts from within the
188 global tables, and the indexs are reset to 0 for each of those
189 tables for the file.
190
191 The procedure table contains the binary equivalents of the .ent
192 (start of the function address), .frame (what register is the
193 virtual frame pointer, constant offset from the register to obtain
194 the VFP, and what register holds the return address), .mask/.fmask
195 (bitmask of saved registers, and where the first register is stored
196 relative to the VFP) assembler directives. It also contains the
197 low and high bounds of the line numbers if debugging is turned on.
198
199 The line number table is a compressed form of the normal COFF line
200 table. Each line number entry is either 1 or 3 bytes long, and
201 contains a signed delta from the previous line, and an unsigned
202 count of the number of instructions this statement takes.
203
204 The local symbol table contains the following fields:
205
206 1) iss: index to the local string table giving the name of the
207 symbol.
208
209 2) value: value of the symbol (address, register number, etc.).
210
211 3) st: symbol type. The current symbol types are:
212
213 stNil -- Nuthin' special
214 stGlobal -- external symbol
215 stStatic -- static
216 stParam -- procedure argument
217 stLocal -- local variable
218 stLabel -- label
219 stProc -- External Procedure
220 stBlock -- beginning of block
221 stEnd -- end (of anything)
222 stMember -- member (of anything)
223 stTypedef -- type definition
224 stFile -- file name
225 stRegReloc -- register relocation
226 stForward -- forwarding address
227 stStaticProc -- Static procedure
228 stConstant -- const
229
230 4) sc: storage class. The current storage classes are:
231
232 scText -- text symbol
233 scData -- initialized data symbol
234 scBss -- un-initialized data symbol
235 scRegister -- value of symbol is register number
236 scAbs -- value of symbol is absolute
237 scUndefined -- who knows?
238 scCdbLocal -- variable's value is IN se->va.??
239 scBits -- this is a bit field
240 scCdbSystem -- value is IN debugger's address space
241 scRegImage -- register value saved on stack
242 scInfo -- symbol contains debugger information
243 scUserStruct -- addr in struct user for current process
244 scSData -- load time only small data
245 scSBss -- load time only small common
246 scRData -- load time only read only data
247 scVar -- Var parameter (fortranpascal)
248 scCommon -- common variable
249 scSCommon -- small common
250 scVarRegister -- Var parameter in a register
251 scVariant -- Variant record
252 scSUndefined -- small undefined(external) data
253 scInit -- .init section symbol
254
255 5) index: pointer to a local symbol or aux. entry.
256
257
258
259 For the following program:
260
261 #include <stdio.h>
262
263 main(){
264 printf("Hello World!\n");
265 return 0;
266 }
267
268 Mips-tdump produces the following information:
269
270 Global file header:
271 magic number 0x162
272 # sections 2
273 timestamp 645311799, Wed Jun 13 17:16:39 1990
274 symbolic header offset 284
275 symbolic header size 96
276 optional header 56
277 flags 0x0
278
279 Symbolic header, magic number = 0x7009, vstamp = 1.31:
280
281 Info Offset Number Bytes
282 ==== ====== ====== =====
283
284 Line numbers 380 4 4 [13]
285 Dense numbers 0 0 0
286 Procedures Tables 384 1 52
287 Local Symbols 436 16 192
288 Optimization Symbols 0 0 0
289 Auxiliary Symbols 628 39 156
290 Local Strings 784 80 80
291 External Strings 864 144 144
292 File Tables 1008 2 144
293 Relative Files 0 0 0
294 External Symbols 1152 20 320
295
296 File #0, "hello2.c"
297
298 Name index = 1 Readin = No
299 Merge = No Endian = LITTLE
300 Debug level = G2 Language = C
301 Adr = 0x00000000
302
303 Info Start Number Size Offset
304 ==== ===== ====== ==== ======
305 Local strings 0 15 15 784
306 Local symbols 0 6 72 436
307 Line numbers 0 13 13 380
308 Optimization symbols 0 0 0 0
309 Procedures 0 1 52 384
310 Auxiliary symbols 0 14 56 628
311 Relative Files 0 0 0 0
312
313 There are 6 local symbols, starting at 436
314
315 Symbol# 0: "hello2.c"
316 End+1 symbol = 6
317 String index = 1
318 Storage class = Text Index = 6
319 Symbol type = File Value = 0
320
321 Symbol# 1: "main"
322 End+1 symbol = 5
323 Type = int
324 String index = 10
325 Storage class = Text Index = 12
326 Symbol type = Proc Value = 0
327
328 Symbol# 2: ""
329 End+1 symbol = 4
330 String index = 0
331 Storage class = Text Index = 4
332 Symbol type = Block Value = 8
333
334 Symbol# 3: ""
335 First symbol = 2
336 String index = 0
337 Storage class = Text Index = 2
338 Symbol type = End Value = 28
339
340 Symbol# 4: "main"
341 First symbol = 1
342 String index = 10
343 Storage class = Text Index = 1
344 Symbol type = End Value = 52
345
346 Symbol# 5: "hello2.c"
347 First symbol = 0
348 String index = 1
349 Storage class = Text Index = 0
350 Symbol type = End Value = 0
351
352 There are 14 auxiliary table entries, starting at 628.
353
354 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
355 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
356 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0]
357 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0]
358 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
359 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0]
360 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0]
361 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0]
362 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0]
363 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0]
364 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0]
365 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0]
366 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0]
367 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
368
369 There are 1 procedure descriptor entries, starting at 0.
370
371 Procedure descriptor 0:
372 Name index = 10 Name = "main"
373 .mask 0x80000000,-4 .fmask 0x00000000,0
374 .frame $29,24,$31
375 Opt. start = -1 Symbols start = 1
376 First line # = 3 Last line # = 6
377 Line Offset = 0 Address = 0x00000000
378
379 There are 4 bytes holding line numbers, starting at 380.
380 Line 3, delta 0, count 2
381 Line 4, delta 1, count 3
382 Line 5, delta 1, count 2
383 Line 6, delta 1, count 6
384
385 File #1, "/usr/include/stdio.h"
386
387 Name index = 1 Readin = No
388 Merge = Yes Endian = LITTLE
389 Debug level = G2 Language = C
390 Adr = 0x00000000
391
392 Info Start Number Size Offset
393 ==== ===== ====== ==== ======
394 Local strings 15 65 65 799
395 Local symbols 6 10 120 508
396 Line numbers 0 0 0 380
397 Optimization symbols 0 0 0 0
398 Procedures 1 0 0 436
399 Auxiliary symbols 14 25 100 684
400 Relative Files 0 0 0 0
401
402 There are 10 local symbols, starting at 442
403
404 Symbol# 0: "/usr/include/stdio.h"
405 End+1 symbol = 10
406 String index = 1
407 Storage class = Text Index = 10
408 Symbol type = File Value = 0
409
410 Symbol# 1: "_iobuf"
411 End+1 symbol = 9
412 String index = 22
413 Storage class = Info Index = 9
414 Symbol type = Block Value = 20
415
416 Symbol# 2: "_cnt"
417 Type = int
418 String index = 29
419 Storage class = Info Index = 4
420 Symbol type = Member Value = 0
421
422 Symbol# 3: "_ptr"
423 Type = ptr to char
424 String index = 34
425 Storage class = Info Index = 15
426 Symbol type = Member Value = 32
427
428 Symbol# 4: "_base"
429 Type = ptr to char
430 String index = 39
431 Storage class = Info Index = 16
432 Symbol type = Member Value = 64
433
434 Symbol# 5: "_bufsiz"
435 Type = int
436 String index = 45
437 Storage class = Info Index = 4
438 Symbol type = Member Value = 96
439
440 Symbol# 6: "_flag"
441 Type = short
442 String index = 53
443 Storage class = Info Index = 3
444 Symbol type = Member Value = 128
445
446 Symbol# 7: "_file"
447 Type = char
448 String index = 59
449 Storage class = Info Index = 2
450 Symbol type = Member Value = 144
451
452 Symbol# 8: ""
453 First symbol = 1
454 String index = 0
455 Storage class = Info Index = 1
456 Symbol type = End Value = 0
457
458 Symbol# 9: "/usr/include/stdio.h"
459 First symbol = 0
460 String index = 1
461 Storage class = Text Index = 0
462 Symbol type = End Value = 0
463
464 There are 25 auxiliary table entries, starting at 642.
465
466 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f]
467 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
468 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
469 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0]
470 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1]
471 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
472 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4]
473 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
474 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
475 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0]
476 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0]
477 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
478 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
479 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
480 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
481 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
482 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
483 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
484 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
485 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
486 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
487 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
488 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
489 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
490 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
491
492 There are 0 procedure descriptor entries, starting at 1.
493
494 There are 20 external symbols, starting at 1152
495
496 Symbol# 0: "_iob"
497 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 }
498 String index = 0 Ifd = 1
499 Storage class = Nil Index = 17
500 Symbol type = Global Value = 60
501
502 Symbol# 1: "fopen"
503 String index = 5 Ifd = 1
504 Storage class = Nil Index = 1048575
505 Symbol type = Proc Value = 0
506
507 Symbol# 2: "fdopen"
508 String index = 11 Ifd = 1
509 Storage class = Nil Index = 1048575
510 Symbol type = Proc Value = 0
511
512 Symbol# 3: "freopen"
513 String index = 18 Ifd = 1
514 Storage class = Nil Index = 1048575
515 Symbol type = Proc Value = 0
516
517 Symbol# 4: "popen"
518 String index = 26 Ifd = 1
519 Storage class = Nil Index = 1048575
520 Symbol type = Proc Value = 0
521
522 Symbol# 5: "tmpfile"
523 String index = 32 Ifd = 1
524 Storage class = Nil Index = 1048575
525 Symbol type = Proc Value = 0
526
527 Symbol# 6: "ftell"
528 String index = 40 Ifd = 1
529 Storage class = Nil Index = 1048575
530 Symbol type = Proc Value = 0
531
532 Symbol# 7: "rewind"
533 String index = 46 Ifd = 1
534 Storage class = Nil Index = 1048575
535 Symbol type = Proc Value = 0
536
537 Symbol# 8: "setbuf"
538 String index = 53 Ifd = 1
539 Storage class = Nil Index = 1048575
540 Symbol type = Proc Value = 0
541
542 Symbol# 9: "setbuffer"
543 String index = 60 Ifd = 1
544 Storage class = Nil Index = 1048575
545 Symbol type = Proc Value = 0
546
547 Symbol# 10: "setlinebuf"
548 String index = 70 Ifd = 1
549 Storage class = Nil Index = 1048575
550 Symbol type = Proc Value = 0
551
552 Symbol# 11: "fgets"
553 String index = 81 Ifd = 1
554 Storage class = Nil Index = 1048575
555 Symbol type = Proc Value = 0
556
557 Symbol# 12: "gets"
558 String index = 87 Ifd = 1
559 Storage class = Nil Index = 1048575
560 Symbol type = Proc Value = 0
561
562 Symbol# 13: "ctermid"
563 String index = 92 Ifd = 1
564 Storage class = Nil Index = 1048575
565 Symbol type = Proc Value = 0
566
567 Symbol# 14: "cuserid"
568 String index = 100 Ifd = 1
569 Storage class = Nil Index = 1048575
570 Symbol type = Proc Value = 0
571
572 Symbol# 15: "tempnam"
573 String index = 108 Ifd = 1
574 Storage class = Nil Index = 1048575
575 Symbol type = Proc Value = 0
576
577 Symbol# 16: "tmpnam"
578 String index = 116 Ifd = 1
579 Storage class = Nil Index = 1048575
580 Symbol type = Proc Value = 0
581
582 Symbol# 17: "sprintf"
583 String index = 123 Ifd = 1
584 Storage class = Nil Index = 1048575
585 Symbol type = Proc Value = 0
586
587 Symbol# 18: "main"
588 Type = int
589 String index = 131 Ifd = 0
590 Storage class = Text Index = 1
591 Symbol type = Proc Value = 0
592
593 Symbol# 19: "printf"
594 String index = 136 Ifd = 0
595 Storage class = Undefined Index = 1048575
596 Symbol type = Proc Value = 0
597
598 The following auxiliary table entries were unused:
599
600 #0 0 0x00000000 void
601 #2 8 0x00000008 char
602 #3 16 0x00000010 short
603 #4 24 0x00000018 int
604 #5 32 0x00000020 long
605 #6 40 0x00000028 float
606 #7 44 0x0000002c double
607 #8 12 0x0000000c unsigned char
608 #9 20 0x00000014 unsigned short
609 #10 28 0x0000001c unsigned int
610 #11 36 0x00000024 unsigned long
611 #14 0 0x00000000 void
612 #15 24 0x00000018 int
613 #19 32 0x00000020 long
614 #20 40 0x00000028 float
615 #21 44 0x0000002c double
616 #22 12 0x0000000c unsigned char
617 #23 20 0x00000014 unsigned short
618 #24 28 0x0000001c unsigned int
619 #25 36 0x00000024 unsigned long
620 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 }
621 */
622 \f
623 /* Redefinition of of storage classes as an enumeration for better
624 debugging. */
625
626 typedef enum sc {
627 sc_Nil = scNil, /* no storage class */
628 sc_Text = scText, /* text symbol */
629 sc_Data = scData, /* initialized data symbol */
630 sc_Bss = scBss, /* un-initialized data symbol */
631 sc_Register = scRegister, /* value of symbol is register number */
632 sc_Abs = scAbs, /* value of symbol is absolute */
633 sc_Undefined = scUndefined, /* who knows? */
634 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */
635 sc_Bits = scBits, /* this is a bit field */
636 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */
637 sc_RegImage = scRegImage, /* register value saved on stack */
638 sc_Info = scInfo, /* symbol contains debugger information */
639 sc_UserStruct = scUserStruct, /* addr in struct user for current process */
640 sc_SData = scSData, /* load time only small data */
641 sc_SBss = scSBss, /* load time only small common */
642 sc_RData = scRData, /* load time only read only data */
643 sc_Var = scVar, /* Var parameter (fortran,pascal) */
644 sc_Common = scCommon, /* common variable */
645 sc_SCommon = scSCommon, /* small common */
646 sc_VarRegister = scVarRegister, /* Var parameter in a register */
647 sc_Variant = scVariant, /* Variant record */
648 sc_SUndefined = scSUndefined, /* small undefined(external) data */
649 sc_Init = scInit, /* .init section symbol */
650 sc_Max = scMax /* Max storage class+1 */
651 } sc_t;
652
653 /* Redefinition of symbol type. */
654
655 typedef enum st {
656 st_Nil = stNil, /* Nuthin' special */
657 st_Global = stGlobal, /* external symbol */
658 st_Static = stStatic, /* static */
659 st_Param = stParam, /* procedure argument */
660 st_Local = stLocal, /* local variable */
661 st_Label = stLabel, /* label */
662 st_Proc = stProc, /* " " Procedure */
663 st_Block = stBlock, /* beginning of block */
664 st_End = stEnd, /* end (of anything) */
665 st_Member = stMember, /* member (of anything - struct/union/enum */
666 st_Typedef = stTypedef, /* type definition */
667 st_File = stFile, /* file name */
668 st_RegReloc = stRegReloc, /* register relocation */
669 st_Forward = stForward, /* forwarding address */
670 st_StaticProc = stStaticProc, /* load time only static procs */
671 st_Constant = stConstant, /* const */
672 st_Str = stStr, /* string */
673 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */
674 st_Expr = stExpr, /* 2+2 vs. 4 */
675 st_Type = stType, /* post-coercion SER */
676 st_Max = stMax /* max type+1 */
677 } st_t;
678
679 /* Redefinition of type qualifiers. */
680
681 typedef enum tq {
682 tq_Nil = tqNil, /* bt is what you see */
683 tq_Ptr = tqPtr, /* pointer */
684 tq_Proc = tqProc, /* procedure */
685 tq_Array = tqArray, /* duh */
686 tq_Far = tqFar, /* longer addressing - 8086/8 land */
687 tq_Vol = tqVol, /* volatile */
688 tq_Max = tqMax /* Max type qualifier+1 */
689 } tq_t;
690
691 /* Redefinition of basic types. */
692
693 typedef enum bt {
694 bt_Nil = btNil, /* undefined */
695 bt_Adr = btAdr, /* address - integer same size as pointer */
696 bt_Char = btChar, /* character */
697 bt_UChar = btUChar, /* unsigned character */
698 bt_Short = btShort, /* short */
699 bt_UShort = btUShort, /* unsigned short */
700 bt_Int = btInt, /* int */
701 bt_UInt = btUInt, /* unsigned int */
702 bt_Long = btLong, /* long */
703 bt_ULong = btULong, /* unsigned long */
704 bt_Float = btFloat, /* float (real) */
705 bt_Double = btDouble, /* Double (real) */
706 bt_Struct = btStruct, /* Structure (Record) */
707 bt_Union = btUnion, /* Union (variant) */
708 bt_Enum = btEnum, /* Enumerated */
709 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */
710 bt_Range = btRange, /* subrange of int */
711 bt_Set = btSet, /* pascal sets */
712 bt_Complex = btComplex, /* fortran complex */
713 bt_DComplex = btDComplex, /* fortran double complex */
714 bt_Indirect = btIndirect, /* forward or unnamed typedef */
715 bt_FixedDec = btFixedDec, /* Fixed Decimal */
716 bt_FloatDec = btFloatDec, /* Float Decimal */
717 bt_String = btString, /* Varying Length Character String */
718 bt_Bit = btBit, /* Aligned Bit String */
719 bt_Picture = btPicture, /* Picture */
720 bt_Void = btVoid, /* Void */
721 bt_Max = btMax /* Max basic type+1 */
722 } bt_t;
723
724 #define N_TQ itqMax
725
726 /* States for whether to hash type or not. */
727 typedef enum hash_state {
728 hash_no = 0, /* don't hash type */
729 hash_yes = 1, /* ok to hash type, or use previous hash */
730 hash_record = 2 /* ok to record hash, but don't use prev. */
731 } hash_state_t;
732
733 /* Types of different sized allocation requests. */
734 enum alloc_type {
735 alloc_type_none, /* dummy value */
736 alloc_type_scope, /* nested scopes linked list */
737 alloc_type_vlinks, /* glue linking pages in varray */
738 alloc_type_shash, /* string hash element */
739 alloc_type_thash, /* type hash element */
740 alloc_type_tag, /* struct/union/tag element */
741 alloc_type_forward, /* element to hold unknown tag */
742 alloc_type_thead, /* head of type hash list */
743 alloc_type_varray, /* general varray allocation */
744 alloc_type_lineno, /* line number list */
745 alloc_type_last /* last+1 element for array bounds */
746 };
747
748 /* Types of auxiliary type information. */
749 enum aux_type {
750 aux_tir, /* TIR type information */
751 aux_rndx, /* relative index into symbol table */
752 aux_dnLow, /* low dimension */
753 aux_dnHigh, /* high dimension */
754 aux_isym, /* symbol table index (end of proc) */
755 aux_iss, /* index into string space (not used) */
756 aux_width, /* width for non-default sized struc fields */
757 aux_count /* count of ranges for variant arm */
758 };
759 \f
760 /* Structures to provide n-number of virtual arrays, each of which can
761 grow linearly, and which are written in the object file as
762 sequential pages. On systems with a BSD malloc, the
763 MAX_CLUSTER_PAGES should be 1 less than a power of two, since
764 malloc adds it's overhead, and rounds up to the next power of 2.
765 Pages are linked together via a linked list.
766
767 If PAGE_SIZE is > 4096, the string length in the shash_t structure
768 can't be represented (assuming there are strings > 4096 bytes). */
769
770 #ifndef PAGE_SIZE
771 #define PAGE_SIZE 4096 /* size of varray pages */
772 #endif
773
774 #define PAGE_USIZE ((unsigned long) PAGE_SIZE)
775
776
777 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */
778 #define MAX_CLUSTER_PAGES 63
779 #endif
780
781 /* Linked list connecting separate page allocations. */
782 typedef struct vlinks {
783 struct vlinks *prev; /* previous set of pages */
784 struct vlinks *next; /* next set of pages */
785 union page *datum; /* start of page */
786 unsigned long start_index; /* starting index # of page */
787 } vlinks_t;
788
789
790 /* Virtual array header. */
791 typedef struct varray {
792 vlinks_t *first; /* first page link */
793 vlinks_t *last; /* last page link */
794 unsigned long num_allocated; /* # objects allocated */
795 unsigned short object_size; /* size in bytes of each object */
796 unsigned short objects_per_page; /* # objects that can fit on a page */
797 unsigned short objects_last_page; /* # objects allocated on last page */
798 } varray_t;
799
800 #ifndef MALLOC_CHECK
801 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type))
802 #else
803 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE)
804 #endif
805
806 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \
807 (vlinks_t *)0, /* first */ \
808 (vlinks_t *)0, /* last */ \
809 0, /* num_allocated */ \
810 sizeof (type), /* object_size */ \
811 OBJECTS_PER_PAGE (type), /* objects_per_page */ \
812 OBJECTS_PER_PAGE (type), /* objects_last_page */ \
813 }
814
815
816 /* Master type for indexes within the symbol table. */
817 typedef unsigned long symint_t;
818
819
820 /* Linked list support for nested scopes (file, block, structure, etc.). */
821 typedef struct scope {
822 struct scope *prev; /* previous scope level */
823 struct scope *free; /* free list pointer */
824 struct localsym *lsym; /* pointer to local symbol node */
825 st_t type; /* type of the node */
826 } scope_t;
827
828
829 /* For a local symbol we store a gas symbol as well as the debugging
830 information we generate. The gas symbol will be NULL if this is
831 only a debugging symbol. */
832 typedef struct localsym {
833 const char *name; /* symbol name */
834 symbolS *as_sym; /* symbol as seen by gas */
835 struct efdr *file_ptr; /* file pointer */
836 struct ecoff_proc *proc_ptr; /* proc pointer */
837 struct localsym *begin_ptr; /* symbol at start of block */
838 struct ecoff_aux *index_ptr; /* index value to be filled in */
839 struct forward *forward_ref; /* forward references to this symbol */
840 long sym_index; /* final symbol index */
841 EXTR ecoff_sym; /* ECOFF debugging symbol */
842 } localsym_t;
843
844
845 /* For aux information we keep the type and the data. */
846 typedef struct ecoff_aux {
847 enum aux_type type; /* aux type */
848 AUXU data; /* aux data */
849 } aux_t;
850
851 /* For a procedure we store the gas symbol as well as the PDR
852 debugging information. */
853 typedef struct ecoff_proc {
854 localsym_t *sym; /* associated symbol */
855 PDR pdr; /* ECOFF debugging info */
856 } proc_t;
857
858 /* Number of proc_t structures allocated. */
859 static unsigned long proc_cnt;
860
861
862 /* Forward reference list for tags referenced, but not yet defined. */
863 typedef struct forward {
864 struct forward *next; /* next forward reference */
865 struct forward *free; /* free list pointer */
866 aux_t *ifd_ptr; /* pointer to store file index */
867 aux_t *index_ptr; /* pointer to store symbol index */
868 } forward_t;
869
870
871 /* Linked list support for tags. The first tag in the list is always
872 the current tag for that block. */
873 typedef struct tag {
874 struct tag *free; /* free list pointer */
875 struct shash *hash_ptr; /* pointer to the hash table head */
876 struct tag *same_name; /* tag with same name in outer scope */
877 struct tag *same_block; /* next tag defined in the same block. */
878 struct forward *forward_ref; /* list of forward references */
879 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
880 symint_t ifd; /* file # tag defined in */
881 localsym_t *sym; /* file's local symbols */
882 } tag_t;
883
884
885 /* Head of a block's linked list of tags. */
886 typedef struct thead {
887 struct thead *prev; /* previous block */
888 struct thead *free; /* free list pointer */
889 struct tag *first_tag; /* first tag in block defined */
890 } thead_t;
891
892
893 /* Union containing pointers to each the small structures which are freed up. */
894 typedef union small_free {
895 scope_t *f_scope; /* scope structure */
896 thead_t *f_thead; /* tag head structure */
897 tag_t *f_tag; /* tag element structure */
898 forward_t *f_forward; /* forward tag reference */
899 } small_free_t;
900
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
915 /* Type hash table support. The size of the hash table must fit
916 within a page with the other extended file descriptor information.
917 Because unique types which are hashed are fewer in number than
918 strings, we use a smaller hash value. */
919
920 #define HASHBITS 30
921
922 #ifndef THASH_SIZE
923 #define THASH_SIZE 113
924 #endif
925
926 typedef struct thash {
927 struct thash *next; /* next hash value */
928 AUXU type; /* type we are hashing */
929 symint_t indx; /* index within string table */
930 } thash_t;
931
932
933 /* Extended file descriptor that contains all of the support necessary
934 to add things to each file separately. */
935 typedef struct efdr {
936 FDR fdr; /* File header to be written out */
937 FDR *orig_fdr; /* original file header */
938 char *name; /* filename */
939 symint_t void_type; /* aux. pointer to 'void' type */
940 symint_t int_type; /* aux. pointer to 'int' type */
941 scope_t *cur_scope; /* current nested scopes */
942 symint_t file_index; /* current file number */
943 int nested_scopes; /* # nested scopes */
944 varray_t strings; /* local strings */
945 varray_t symbols; /* local symbols */
946 varray_t procs; /* procedures */
947 varray_t aux_syms; /* auxiliary symbols */
948 struct efdr *next_file; /* next file descriptor */
949 /* string/type hash tables */
950 struct hash_control *str_hash; /* string hash table */
951 thash_t *thash_head[THASH_SIZE];
952 } efdr_t;
953
954 /* Pre-initialized extended file structure. */
955 static const efdr_t init_file =
956 {
957 { /* FDR structure */
958 0, /* adr: memory address of beginning of file */
959 0, /* rss: file name (of source, if known) */
960 0, /* issBase: file's string space */
961 0, /* cbSs: number of bytes in the ss */
962 0, /* isymBase: beginning of symbols */
963 0, /* csym: count file's of symbols */
964 0, /* ilineBase: file's line symbols */
965 0, /* cline: count of file's line symbols */
966 0, /* ioptBase: file's optimization entries */
967 0, /* copt: count of file's optimization entries */
968 0, /* ipdFirst: start of procedures for this file */
969 0, /* cpd: count of procedures for this file */
970 0, /* iauxBase: file's auxiliary entries */
971 0, /* caux: count of file's auxiliary entries */
972 0, /* rfdBase: index into the file indirect table */
973 0, /* crfd: count file indirect entries */
974 langC, /* lang: language for this file */
975 0, /* fMerge: whether this file can be merged */
976 0, /* fReadin: true if read in (not just created) */
977 #ifdef TARGET_BYTES_BIG_ENDIAN
978 1, /* fBigendian: if 1, compiled on big endian machine */
979 #else
980 0, /* fBigendian: if 1, compiled on big endian machine */
981 #endif
982 GLEVEL_2, /* glevel: level this file was compiled with */
983 0, /* reserved: reserved for future use */
984 0, /* cbLineOffset: byte offset from header for this file ln's */
985 0, /* cbLine: size of lines for this file */
986 },
987
988 (FDR *)0, /* orig_fdr: original file header pointer */
989 (char *)0, /* name: pointer to filename */
990 0, /* void_type: ptr to aux node for void type */
991 0, /* int_type: ptr to aux node for int type */
992 (scope_t *)0, /* cur_scope: current scope being processed */
993 0, /* file_index: current file # */
994 0, /* nested_scopes: # nested scopes */
995 INIT_VARRAY (char), /* strings: local string varray */
996 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */
997 INIT_VARRAY (proc_t), /* procs: procedure varray */
998 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */
999
1000 (struct efdr *)0, /* next_file: next file structure */
1001
1002 (struct hash_control *)0, /* str_hash: string hash table */
1003 { 0 }, /* thash_head: type hash table */
1004 };
1005
1006
1007 static efdr_t *first_file; /* first file descriptor */
1008 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */
1009
1010
1011 /* Line number information is kept in a list until the assembly is
1012 finished. */
1013 typedef struct lineno_list {
1014 struct lineno_list *next; /* next element in list */
1015 efdr_t *file; /* file this line is in */
1016 proc_t *proc; /* procedure this line is in */
1017 fragS *frag; /* fragment this line number is in */
1018 unsigned long paddr; /* offset within fragment */
1019 long lineno; /* actual line number */
1020 } lineno_list_t;
1021
1022 static lineno_list_t *first_lineno;
1023 static lineno_list_t **last_lineno_ptr = &first_lineno;
1024
1025 /* Sometimes there will be some .loc statements before a .ent. We
1026 keep them in this list so that we can fill in the procedure pointer
1027 after we see the .ent. */
1028 static lineno_list_t *noproc_lineno;
1029
1030 /* Union of various things that are held in pages. */
1031 typedef union page {
1032 char byte [ PAGE_SIZE ];
1033 unsigned char ubyte [ PAGE_SIZE ];
1034 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ];
1035 FDR ofile [ PAGE_SIZE / sizeof (FDR) ];
1036 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ];
1037 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ];
1038 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ];
1039 DNR dense [ PAGE_SIZE / sizeof (DNR) ];
1040 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ];
1041 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ];
1042 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ];
1043 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ];
1044 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ];
1045 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ];
1046 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ];
1047 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ];
1048 } page_t;
1049
1050
1051 /* Structure holding allocation information for small sized structures. */
1052 typedef struct alloc_info {
1053 char *alloc_name; /* name of this allocation type (must be first) */
1054 page_t *cur_page; /* current page being allocated from */
1055 small_free_t free_list; /* current free list if any */
1056 int unallocated; /* number of elements unallocated on page */
1057 int total_alloc; /* total number of allocations */
1058 int total_free; /* total number of frees */
1059 int total_pages; /* total number of pages allocated */
1060 } alloc_info_t;
1061
1062
1063 /* Type information collected together. */
1064 typedef struct type_info {
1065 bt_t basic_type; /* basic type */
1066 int orig_type; /* original COFF-based type */
1067 int num_tq; /* # type qualifiers */
1068 int num_dims; /* # dimensions */
1069 int num_sizes; /* # sizes */
1070 int extra_sizes; /* # extra sizes not tied with dims */
1071 tag_t * tag_ptr; /* tag pointer */
1072 int bitfield; /* symbol is a bitfield */
1073 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/
1074 symint_t dimensions [N_TQ]; /* dimensions for each array */
1075 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of
1076 struct/union/enum + bitfield size */
1077 } type_info_t;
1078
1079 /* Pre-initialized type_info struct. */
1080 static const type_info_t type_info_init = {
1081 bt_Nil, /* basic type */
1082 T_NULL, /* original COFF-based type */
1083 0, /* # type qualifiers */
1084 0, /* # dimensions */
1085 0, /* # sizes */
1086 0, /* sizes not tied with dims */
1087 NULL, /* ptr to tag */
1088 0, /* bitfield */
1089 { /* type qualifiers */
1090 tq_Nil,
1091 tq_Nil,
1092 tq_Nil,
1093 tq_Nil,
1094 tq_Nil,
1095 tq_Nil,
1096 },
1097 { /* dimensions */
1098 0,
1099 0,
1100 0,
1101 0,
1102 0,
1103 0
1104 },
1105 { /* sizes */
1106 0,
1107 0,
1108 0,
1109 0,
1110 0,
1111 0,
1112 0,
1113 0,
1114 },
1115 };
1116
1117 /* Global hash table for the tags table and global table for file
1118 descriptors. */
1119
1120 static varray_t file_desc = INIT_VARRAY (efdr_t);
1121
1122 static struct hash_control *tag_hash;
1123
1124 /* Static types for int and void. Also, remember the last function's
1125 type (which is set up when we encounter the declaration for the
1126 function, and used when the end block for the function is emitted. */
1127
1128 static type_info_t int_type_info;
1129 static type_info_t void_type_info;
1130 static type_info_t last_func_type_info;
1131 static symbolS *last_func_sym_value;
1132
1133
1134 /* Convert COFF basic type to ECOFF basic type. The T_NULL type
1135 really should use bt_Void, but this causes the current ecoff GDB to
1136 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS
1137 2.0) doesn't understand it, even though the compiler generates it.
1138 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler
1139 suite, but for now go with what works.
1140
1141 It would make sense for the .type and .scl directives to use the
1142 ECOFF numbers directly, rather than using the COFF numbers and
1143 mapping them. Unfortunately, this is historically what mips-tfile
1144 expects, and changing gcc now would be a considerable pain (the
1145 native compiler generates debugging information internally, rather
1146 than via the assembler, so it will never use .type or .scl). */
1147
1148 static const bt_t map_coff_types[] = {
1149 bt_Nil, /* T_NULL */
1150 bt_Nil, /* T_ARG */
1151 bt_Char, /* T_CHAR */
1152 bt_Short, /* T_SHORT */
1153 bt_Int, /* T_INT */
1154 bt_Long, /* T_LONG */
1155 bt_Float, /* T_FLOAT */
1156 bt_Double, /* T_DOUBLE */
1157 bt_Struct, /* T_STRUCT */
1158 bt_Union, /* T_UNION */
1159 bt_Enum, /* T_ENUM */
1160 bt_Enum, /* T_MOE */
1161 bt_UChar, /* T_UCHAR */
1162 bt_UShort, /* T_USHORT */
1163 bt_UInt, /* T_UINT */
1164 bt_ULong /* T_ULONG */
1165 };
1166
1167 /* Convert COFF storage class to ECOFF storage class. */
1168 static const sc_t map_coff_storage[] = {
1169 sc_Nil, /* 0: C_NULL */
1170 sc_Abs, /* 1: C_AUTO auto var */
1171 sc_Undefined, /* 2: C_EXT external */
1172 sc_Data, /* 3: C_STAT static */
1173 sc_Register, /* 4: C_REG register */
1174 sc_Undefined, /* 5: C_EXTDEF ??? */
1175 sc_Text, /* 6: C_LABEL label */
1176 sc_Text, /* 7: C_ULABEL user label */
1177 sc_Info, /* 8: C_MOS member of struct */
1178 sc_Abs, /* 9: C_ARG argument */
1179 sc_Info, /* 10: C_STRTAG struct tag */
1180 sc_Info, /* 11: C_MOU member of union */
1181 sc_Info, /* 12: C_UNTAG union tag */
1182 sc_Info, /* 13: C_TPDEF typedef */
1183 sc_Data, /* 14: C_USTATIC ??? */
1184 sc_Info, /* 15: C_ENTAG enum tag */
1185 sc_Info, /* 16: C_MOE member of enum */
1186 sc_Register, /* 17: C_REGPARM register parameter */
1187 sc_Bits, /* 18; C_FIELD bitfield */
1188 sc_Nil, /* 19 */
1189 sc_Nil, /* 20 */
1190 sc_Nil, /* 21 */
1191 sc_Nil, /* 22 */
1192 sc_Nil, /* 23 */
1193 sc_Nil, /* 24 */
1194 sc_Nil, /* 25 */
1195 sc_Nil, /* 26 */
1196 sc_Nil, /* 27 */
1197 sc_Nil, /* 28 */
1198 sc_Nil, /* 29 */
1199 sc_Nil, /* 30 */
1200 sc_Nil, /* 31 */
1201 sc_Nil, /* 32 */
1202 sc_Nil, /* 33 */
1203 sc_Nil, /* 34 */
1204 sc_Nil, /* 35 */
1205 sc_Nil, /* 36 */
1206 sc_Nil, /* 37 */
1207 sc_Nil, /* 38 */
1208 sc_Nil, /* 39 */
1209 sc_Nil, /* 40 */
1210 sc_Nil, /* 41 */
1211 sc_Nil, /* 42 */
1212 sc_Nil, /* 43 */
1213 sc_Nil, /* 44 */
1214 sc_Nil, /* 45 */
1215 sc_Nil, /* 46 */
1216 sc_Nil, /* 47 */
1217 sc_Nil, /* 48 */
1218 sc_Nil, /* 49 */
1219 sc_Nil, /* 50 */
1220 sc_Nil, /* 51 */
1221 sc_Nil, /* 52 */
1222 sc_Nil, /* 53 */
1223 sc_Nil, /* 54 */
1224 sc_Nil, /* 55 */
1225 sc_Nil, /* 56 */
1226 sc_Nil, /* 57 */
1227 sc_Nil, /* 58 */
1228 sc_Nil, /* 59 */
1229 sc_Nil, /* 60 */
1230 sc_Nil, /* 61 */
1231 sc_Nil, /* 62 */
1232 sc_Nil, /* 63 */
1233 sc_Nil, /* 64 */
1234 sc_Nil, /* 65 */
1235 sc_Nil, /* 66 */
1236 sc_Nil, /* 67 */
1237 sc_Nil, /* 68 */
1238 sc_Nil, /* 69 */
1239 sc_Nil, /* 70 */
1240 sc_Nil, /* 71 */
1241 sc_Nil, /* 72 */
1242 sc_Nil, /* 73 */
1243 sc_Nil, /* 74 */
1244 sc_Nil, /* 75 */
1245 sc_Nil, /* 76 */
1246 sc_Nil, /* 77 */
1247 sc_Nil, /* 78 */
1248 sc_Nil, /* 79 */
1249 sc_Nil, /* 80 */
1250 sc_Nil, /* 81 */
1251 sc_Nil, /* 82 */
1252 sc_Nil, /* 83 */
1253 sc_Nil, /* 84 */
1254 sc_Nil, /* 85 */
1255 sc_Nil, /* 86 */
1256 sc_Nil, /* 87 */
1257 sc_Nil, /* 88 */
1258 sc_Nil, /* 89 */
1259 sc_Nil, /* 90 */
1260 sc_Nil, /* 91 */
1261 sc_Nil, /* 92 */
1262 sc_Nil, /* 93 */
1263 sc_Nil, /* 94 */
1264 sc_Nil, /* 95 */
1265 sc_Nil, /* 96 */
1266 sc_Nil, /* 97 */
1267 sc_Nil, /* 98 */
1268 sc_Nil, /* 99 */
1269 sc_Text, /* 100: C_BLOCK block start/end */
1270 sc_Text, /* 101: C_FCN function start/end */
1271 sc_Info, /* 102: C_EOS end of struct/union/enum */
1272 sc_Nil, /* 103: C_FILE file start */
1273 sc_Nil, /* 104: C_LINE line number */
1274 sc_Nil, /* 105: C_ALIAS combined type info */
1275 sc_Nil, /* 106: C_HIDDEN ??? */
1276 };
1277
1278 /* Convert COFF storage class to ECOFF symbol type. */
1279 static const st_t map_coff_sym_type[] = {
1280 st_Nil, /* 0: C_NULL */
1281 st_Local, /* 1: C_AUTO auto var */
1282 st_Global, /* 2: C_EXT external */
1283 st_Static, /* 3: C_STAT static */
1284 st_Local, /* 4: C_REG register */
1285 st_Global, /* 5: C_EXTDEF ??? */
1286 st_Label, /* 6: C_LABEL label */
1287 st_Label, /* 7: C_ULABEL user label */
1288 st_Member, /* 8: C_MOS member of struct */
1289 st_Param, /* 9: C_ARG argument */
1290 st_Block, /* 10: C_STRTAG struct tag */
1291 st_Member, /* 11: C_MOU member of union */
1292 st_Block, /* 12: C_UNTAG union tag */
1293 st_Typedef, /* 13: C_TPDEF typedef */
1294 st_Static, /* 14: C_USTATIC ??? */
1295 st_Block, /* 15: C_ENTAG enum tag */
1296 st_Member, /* 16: C_MOE member of enum */
1297 st_Param, /* 17: C_REGPARM register parameter */
1298 st_Member, /* 18; C_FIELD bitfield */
1299 st_Nil, /* 19 */
1300 st_Nil, /* 20 */
1301 st_Nil, /* 21 */
1302 st_Nil, /* 22 */
1303 st_Nil, /* 23 */
1304 st_Nil, /* 24 */
1305 st_Nil, /* 25 */
1306 st_Nil, /* 26 */
1307 st_Nil, /* 27 */
1308 st_Nil, /* 28 */
1309 st_Nil, /* 29 */
1310 st_Nil, /* 30 */
1311 st_Nil, /* 31 */
1312 st_Nil, /* 32 */
1313 st_Nil, /* 33 */
1314 st_Nil, /* 34 */
1315 st_Nil, /* 35 */
1316 st_Nil, /* 36 */
1317 st_Nil, /* 37 */
1318 st_Nil, /* 38 */
1319 st_Nil, /* 39 */
1320 st_Nil, /* 40 */
1321 st_Nil, /* 41 */
1322 st_Nil, /* 42 */
1323 st_Nil, /* 43 */
1324 st_Nil, /* 44 */
1325 st_Nil, /* 45 */
1326 st_Nil, /* 46 */
1327 st_Nil, /* 47 */
1328 st_Nil, /* 48 */
1329 st_Nil, /* 49 */
1330 st_Nil, /* 50 */
1331 st_Nil, /* 51 */
1332 st_Nil, /* 52 */
1333 st_Nil, /* 53 */
1334 st_Nil, /* 54 */
1335 st_Nil, /* 55 */
1336 st_Nil, /* 56 */
1337 st_Nil, /* 57 */
1338 st_Nil, /* 58 */
1339 st_Nil, /* 59 */
1340 st_Nil, /* 60 */
1341 st_Nil, /* 61 */
1342 st_Nil, /* 62 */
1343 st_Nil, /* 63 */
1344 st_Nil, /* 64 */
1345 st_Nil, /* 65 */
1346 st_Nil, /* 66 */
1347 st_Nil, /* 67 */
1348 st_Nil, /* 68 */
1349 st_Nil, /* 69 */
1350 st_Nil, /* 70 */
1351 st_Nil, /* 71 */
1352 st_Nil, /* 72 */
1353 st_Nil, /* 73 */
1354 st_Nil, /* 74 */
1355 st_Nil, /* 75 */
1356 st_Nil, /* 76 */
1357 st_Nil, /* 77 */
1358 st_Nil, /* 78 */
1359 st_Nil, /* 79 */
1360 st_Nil, /* 80 */
1361 st_Nil, /* 81 */
1362 st_Nil, /* 82 */
1363 st_Nil, /* 83 */
1364 st_Nil, /* 84 */
1365 st_Nil, /* 85 */
1366 st_Nil, /* 86 */
1367 st_Nil, /* 87 */
1368 st_Nil, /* 88 */
1369 st_Nil, /* 89 */
1370 st_Nil, /* 90 */
1371 st_Nil, /* 91 */
1372 st_Nil, /* 92 */
1373 st_Nil, /* 93 */
1374 st_Nil, /* 94 */
1375 st_Nil, /* 95 */
1376 st_Nil, /* 96 */
1377 st_Nil, /* 97 */
1378 st_Nil, /* 98 */
1379 st_Nil, /* 99 */
1380 st_Block, /* 100: C_BLOCK block start/end */
1381 st_Proc, /* 101: C_FCN function start/end */
1382 st_End, /* 102: C_EOS end of struct/union/enum */
1383 st_File, /* 103: C_FILE file start */
1384 st_Nil, /* 104: C_LINE line number */
1385 st_Nil, /* 105: C_ALIAS combined type info */
1386 st_Nil, /* 106: C_HIDDEN ??? */
1387 };
1388
1389
1390 /* Keep track of different sized allocation requests. */
1391 static alloc_info_t alloc_counts[ (int)alloc_type_last ];
1392 \f
1393 /* Various statics. */
1394 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */
1395 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */
1396 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */
1397 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */
1398 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */
1399 #ifdef ECOFF_DEBUG
1400 static int debug = 0; /* trace functions */
1401 #endif
1402 static int stabs_seen = 0; /* != 0 if stabs have been seen */
1403
1404 static int current_file_idx;
1405
1406 /* Pseudo symbol to use when putting stabs into the symbol table. */
1407 #ifndef STABS_SYMBOL
1408 #define STABS_SYMBOL "@stabs"
1409 #endif
1410
1411 static char stabs_symbol[] = STABS_SYMBOL;
1412 \f
1413 /* Prototypes for functions defined in this file. */
1414
1415 static void add_varray_page PARAMS ((varray_t *vp));
1416 static symint_t add_string PARAMS ((varray_t *vp,
1417 struct hash_control *hash_tbl,
1418 const char *str,
1419 shash_t **ret_hash));
1420 static localsym_t *add_ecoff_symbol PARAMS ((const char *str, st_t type,
1421 sc_t storage, symbolS *sym,
1422 symint_t value,
1423 symint_t indx));
1424 static symint_t add_aux_sym_symint PARAMS ((symint_t aux_word));
1425 static symint_t add_aux_sym_rndx PARAMS ((int file_index,
1426 symint_t sym_index));
1427 static symint_t add_aux_sym_tir PARAMS ((type_info_t *t,
1428 hash_state_t state,
1429 thash_t **hash_tbl));
1430 static tag_t *get_tag PARAMS ((const char *tag, localsym_t *sym,
1431 bt_t basic_type));
1432 static void add_unknown_tag PARAMS ((tag_t *ptag));
1433 static void add_procedure PARAMS ((char *func));
1434 static void add_file PARAMS ((const char *file_name, int indx));
1435 #ifdef ECOFF_DEBUG
1436 static char *sc_to_string PARAMS ((sc_t storage_class));
1437 static char *st_to_string PARAMS ((st_t symbol_type));
1438 #endif
1439 static void mark_stabs PARAMS ((int));
1440 static char *ecoff_add_bytes PARAMS ((char **buf, char **bufend,
1441 char *bufptr, unsigned long need));
1442 static unsigned long ecoff_padding_adjust
1443 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1444 unsigned long offset, char **bufptrptr));
1445 static unsigned long ecoff_build_lineno
1446 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1447 unsigned long offset, long *linecntptr));
1448 static unsigned long ecoff_build_symbols
1449 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1450 unsigned long offset));
1451 static unsigned long ecoff_build_procs
1452 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1453 unsigned long offset));
1454 static unsigned long ecoff_build_aux
1455 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1456 unsigned long offset));
1457 static unsigned long ecoff_build_strings PARAMS ((char **buf, char **bufend,
1458 unsigned long offset,
1459 varray_t *vp));
1460 static unsigned long ecoff_build_ss
1461 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1462 unsigned long offset));
1463 static unsigned long ecoff_build_fdr
1464 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1465 unsigned long offset));
1466 static void ecoff_setup_ext PARAMS ((void));
1467 static page_t *allocate_cluster PARAMS ((unsigned long npages));
1468 static page_t *allocate_page PARAMS ((void));
1469 static scope_t *allocate_scope PARAMS ((void));
1470 static void free_scope PARAMS ((scope_t *ptr));
1471 static vlinks_t *allocate_vlinks PARAMS ((void));
1472 static shash_t *allocate_shash PARAMS ((void));
1473 static thash_t *allocate_thash PARAMS ((void));
1474 static tag_t *allocate_tag PARAMS ((void));
1475 static void free_tag PARAMS ((tag_t *ptr));
1476 static forward_t *allocate_forward PARAMS ((void));
1477 static thead_t *allocate_thead PARAMS ((void));
1478 static void free_thead PARAMS ((thead_t *ptr));
1479 static lineno_list_t *allocate_lineno_list PARAMS ((void));
1480 static void generate_ecoff_stab PARAMS ((int, const char *, int, int, int));
1481 \f
1482 /* This function should be called when the assembler starts up. */
1483
1484 void
1485 ecoff_read_begin_hook ()
1486 {
1487 tag_hash = hash_new ();
1488 top_tag_head = allocate_thead ();
1489 top_tag_head->first_tag = (tag_t *) NULL;
1490 top_tag_head->free = (thead_t *) NULL;
1491 top_tag_head->prev = cur_tag_head;
1492 cur_tag_head = top_tag_head;
1493 }
1494
1495 /* This function should be called when a symbol is created. */
1496
1497 void
1498 ecoff_symbol_new_hook (symbolP)
1499 symbolS *symbolP;
1500 {
1501 if (cur_file_ptr == (efdr_t *) NULL)
1502 add_file ((const char *) NULL, 0);
1503 symbolP->ecoff_file = cur_file_ptr;
1504 symbolP->ecoff_symbol = NULL;
1505 symbolP->ecoff_extern_size = 0;
1506 }
1507 \f
1508 /* Add a page to a varray object. */
1509
1510 static void
1511 add_varray_page (vp)
1512 varray_t *vp; /* varray to add page to */
1513 {
1514 vlinks_t *new_links = allocate_vlinks ();
1515
1516 #ifdef MALLOC_CHECK
1517 if (vp->object_size > 1)
1518 new_links->datum = (page_t *) xcalloc (1, vp->object_size);
1519 else
1520 #endif
1521 new_links->datum = allocate_page ();
1522
1523 alloc_counts[(int)alloc_type_varray].total_alloc++;
1524 alloc_counts[(int)alloc_type_varray].total_pages++;
1525
1526 new_links->start_index = vp->num_allocated;
1527 vp->objects_last_page = 0;
1528
1529 if (vp->first == (vlinks_t *) NULL) /* first allocation? */
1530 vp->first = vp->last = new_links;
1531 else
1532 { /* 2nd or greater allocation */
1533 new_links->prev = vp->last;
1534 vp->last->next = new_links;
1535 vp->last = new_links;
1536 }
1537 }
1538 \f
1539 /* Add a string (and null pad) to one of the string tables. */
1540
1541 static symint_t
1542 add_string (vp, hash_tbl, str, ret_hash)
1543 varray_t *vp; /* string obstack */
1544 struct hash_control *hash_tbl; /* ptr to hash table */
1545 const char *str; /* string */
1546 shash_t **ret_hash; /* return hash pointer */
1547 {
1548 register unsigned long len = strlen (str);
1549 register shash_t *hash_ptr;
1550
1551 if (len >= PAGE_USIZE)
1552 as_fatal ("String too big (%lu bytes)", len);
1553
1554 hash_ptr = (shash_t *) hash_find (hash_tbl, str);
1555 if (hash_ptr == (shash_t *) NULL)
1556 {
1557 register const char *err;
1558
1559 if (vp->objects_last_page + len >= PAGE_USIZE)
1560 {
1561 vp->num_allocated =
1562 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE;
1563 add_varray_page (vp);
1564 }
1565
1566 hash_ptr = allocate_shash ();
1567 hash_ptr->indx = vp->num_allocated;
1568
1569 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page];
1570
1571 vp->objects_last_page += len + 1;
1572 vp->num_allocated += len + 1;
1573
1574 strcpy (hash_ptr->string, str);
1575
1576 err = hash_insert (hash_tbl, str, (char *) hash_ptr);
1577 if (err)
1578 as_fatal ("Inserting \"%s\" into string hash table: %s",
1579 str, err);
1580 }
1581
1582 if (ret_hash != (shash_t **) NULL)
1583 *ret_hash = hash_ptr;
1584
1585 return hash_ptr->indx;
1586 }
1587 \f
1588 /* Add debugging information for a symbol. */
1589
1590 static localsym_t *
1591 add_ecoff_symbol (str, type, storage, sym_value, value, indx)
1592 const char *str; /* symbol name */
1593 st_t type; /* symbol type */
1594 sc_t storage; /* storage class */
1595 symbolS *sym_value; /* associated symbol. */
1596 symint_t value; /* value of symbol */
1597 symint_t indx; /* index to local/aux. syms */
1598 {
1599 localsym_t *psym;
1600 register scope_t *pscope;
1601 register thead_t *ptag_head;
1602 register tag_t *ptag;
1603 register tag_t *ptag_next;
1604 register varray_t *vp;
1605 register int scope_delta = 0;
1606 shash_t *hash_ptr = (shash_t *) NULL;
1607
1608 if (cur_file_ptr == (efdr_t *) NULL)
1609 as_fatal ("no current file pointer");
1610
1611 vp = &cur_file_ptr->symbols;
1612
1613 if (vp->objects_last_page == vp->objects_per_page)
1614 add_varray_page (vp);
1615
1616 psym = &vp->last->datum->sym[ vp->objects_last_page++ ];
1617
1618 if (str == (const char *) NULL && sym_value != (symbolS *) NULL)
1619 psym->name = S_GET_NAME (sym_value);
1620 else
1621 psym->name = str;
1622 psym->as_sym = sym_value;
1623 if (sym_value != (symbolS *) NULL)
1624 sym_value->ecoff_symbol = psym;
1625 psym->file_ptr = cur_file_ptr;
1626 psym->proc_ptr = cur_proc_ptr;
1627 psym->begin_ptr = (localsym_t *) NULL;
1628 psym->index_ptr = (aux_t *) NULL;
1629 psym->forward_ref = (forward_t *) NULL;
1630 psym->sym_index = -1;
1631 memset (&psym->ecoff_sym, 0, sizeof (EXTR));
1632 psym->ecoff_sym.asym.value = value;
1633 psym->ecoff_sym.asym.st = (unsigned) type;
1634 psym->ecoff_sym.asym.sc = (unsigned) storage;
1635 psym->ecoff_sym.asym.index = indx;
1636
1637 /* If there is an associated symbol, we wait until the end of the
1638 assembly before deciding where to put the name (it may be just an
1639 external symbol). Otherwise, this is just a debugging symbol and
1640 the name should go with the current file. */
1641 if (sym_value == (symbolS *) NULL)
1642 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL)
1643 ? 0
1644 : add_string (&cur_file_ptr->strings,
1645 cur_file_ptr->str_hash,
1646 str,
1647 &hash_ptr));
1648
1649 ++vp->num_allocated;
1650
1651 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym))
1652 return psym;
1653
1654 /* Save the symbol within the hash table if this is a static
1655 item, and it has a name. */
1656 if (hash_ptr != (shash_t *) NULL
1657 && (type == st_Global || type == st_Static || type == st_Label
1658 || type == st_Proc || type == st_StaticProc))
1659 hash_ptr->sym_ptr = psym;
1660
1661 /* push or pop a scope if appropriate. */
1662 switch (type)
1663 {
1664 default:
1665 break;
1666
1667 case st_File: /* beginning of file */
1668 case st_Proc: /* procedure */
1669 case st_StaticProc: /* static procedure */
1670 case st_Block: /* begin scope */
1671 pscope = allocate_scope ();
1672 pscope->prev = cur_file_ptr->cur_scope;
1673 pscope->lsym = psym;
1674 pscope->type = type;
1675 cur_file_ptr->cur_scope = pscope;
1676
1677 if (type != st_File)
1678 scope_delta = 1;
1679
1680 /* For every block type except file, struct, union, or
1681 enumeration blocks, push a level on the tag stack. We omit
1682 file types, so that tags can span file boundaries. */
1683 if (type != st_File && storage != sc_Info)
1684 {
1685 ptag_head = allocate_thead ();
1686 ptag_head->first_tag = 0;
1687 ptag_head->prev = cur_tag_head;
1688 cur_tag_head = ptag_head;
1689 }
1690 break;
1691
1692 case st_End:
1693 pscope = cur_file_ptr->cur_scope;
1694 if (pscope == (scope_t *) NULL)
1695 as_fatal ("too many st_End's");
1696 else
1697 {
1698 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st;
1699
1700 psym->begin_ptr = pscope->lsym;
1701
1702 if (begin_type != st_File)
1703 scope_delta = -1;
1704
1705 /* Except for file, structure, union, or enumeration end
1706 blocks remove all tags created within this scope. */
1707 if (begin_type != st_File && storage != sc_Info)
1708 {
1709 ptag_head = cur_tag_head;
1710 cur_tag_head = ptag_head->prev;
1711
1712 for (ptag = ptag_head->first_tag;
1713 ptag != (tag_t *) NULL;
1714 ptag = ptag_next)
1715 {
1716 if (ptag->forward_ref != (forward_t *) NULL)
1717 add_unknown_tag (ptag);
1718
1719 ptag_next = ptag->same_block;
1720 ptag->hash_ptr->tag_ptr = ptag->same_name;
1721 free_tag (ptag);
1722 }
1723
1724 free_thead (ptag_head);
1725 }
1726
1727 cur_file_ptr->cur_scope = pscope->prev;
1728
1729 /* block begin gets next sym #. This is set when we know
1730 the symbol index value. */
1731
1732 /* Functions push two or more aux words as follows:
1733 1st word: index+1 of the end symbol (filled in later).
1734 2nd word: type of the function (plus any aux words needed).
1735 Also, tie the external pointer back to the function begin symbol. */
1736 if (begin_type != st_File && begin_type != st_Block)
1737 {
1738 symint_t ty;
1739 varray_t *svp = &cur_file_ptr->aux_syms;
1740
1741 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0);
1742 pscope->lsym->index_ptr =
1743 &svp->last->datum->aux[svp->objects_last_page - 1];
1744 ty = add_aux_sym_tir (&last_func_type_info,
1745 hash_no,
1746 &cur_file_ptr->thash_head[0]);
1747
1748 /* This seems to be unnecessary. I'm not even sure what it is
1749 * intended to do. It's from mips-tfile.
1750 * if (last_func_sym_value != (symbolS *) NULL)
1751 * {
1752 * last_func_sym_value->ifd = cur_file_ptr->file_index;
1753 * last_func_sym_value->index = ty;
1754 * }
1755 */
1756 }
1757
1758 free_scope (pscope);
1759 }
1760 }
1761
1762 cur_file_ptr->nested_scopes += scope_delta;
1763
1764 #ifdef ECOFF_DEBUG
1765 if (debug && type != st_File
1766 && (debug > 2 || type == st_Block || type == st_End
1767 || type == st_Proc || type == st_StaticProc))
1768 {
1769 char *sc_str = sc_to_string (storage);
1770 char *st_str = st_to_string (type);
1771 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0);
1772
1773 fprintf (stderr,
1774 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s",
1775 value, depth, sc_str);
1776
1777 if (str_start && str_end_p1 - str_start > 0)
1778 fprintf (stderr, " st= %-11s name= %.*s\n", st_str, str_end_p1 - str_start, str_start);
1779 else
1780 {
1781 unsigned long len = strlen (st_str);
1782 fprintf (stderr, " st= %.*s\n", len-1, st_str);
1783 }
1784 }
1785 #endif
1786
1787 return psym;
1788 }
1789 \f
1790 /* Add an auxiliary symbol (passing a symint). This is actually used
1791 for integral aux types, not just symints. */
1792
1793 static symint_t
1794 add_aux_sym_symint (aux_word)
1795 symint_t aux_word; /* auxiliary information word */
1796 {
1797 register varray_t *vp;
1798 register aux_t *aux_ptr;
1799
1800 if (cur_file_ptr == (efdr_t *) NULL)
1801 as_fatal ("no current file pointer");
1802
1803 vp = &cur_file_ptr->aux_syms;
1804
1805 if (vp->objects_last_page == vp->objects_per_page)
1806 add_varray_page (vp);
1807
1808 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1809 aux_ptr->type = aux_isym;
1810 aux_ptr->data.isym = aux_word;
1811
1812 return vp->num_allocated++;
1813 }
1814
1815
1816 /* Add an auxiliary symbol (passing a file/symbol index combo). */
1817
1818 static symint_t
1819 add_aux_sym_rndx (file_index, sym_index)
1820 int file_index;
1821 symint_t sym_index;
1822 {
1823 register varray_t *vp;
1824 register aux_t *aux_ptr;
1825
1826 if (cur_file_ptr == (efdr_t *) NULL)
1827 as_fatal ("no current file pointer");
1828
1829 vp = &cur_file_ptr->aux_syms;
1830
1831 if (vp->objects_last_page == vp->objects_per_page)
1832 add_varray_page (vp);
1833
1834 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1835 aux_ptr->type = aux_rndx;
1836 aux_ptr->data.rndx.rfd = file_index;
1837 aux_ptr->data.rndx.index = sym_index;
1838
1839 return vp->num_allocated++;
1840 }
1841 \f
1842 /* Add an auxiliary symbol (passing the basic type and possibly
1843 type qualifiers). */
1844
1845 static symint_t
1846 add_aux_sym_tir (t, state, hash_tbl)
1847 type_info_t *t; /* current type information */
1848 hash_state_t state; /* whether to hash type or not */
1849 thash_t **hash_tbl; /* pointer to hash table to use */
1850 {
1851 register varray_t *vp;
1852 register aux_t *aux_ptr;
1853 static AUXU init_aux;
1854 symint_t ret;
1855 int i;
1856 AUXU aux;
1857
1858 if (cur_file_ptr == (efdr_t *) NULL)
1859 as_fatal ("no current file pointer");
1860
1861 vp = &cur_file_ptr->aux_syms;
1862
1863 aux = init_aux;
1864 aux.ti.bt = (int) t->basic_type;
1865 aux.ti.continued = 0;
1866 aux.ti.fBitfield = t->bitfield;
1867
1868 aux.ti.tq0 = (int) t->type_qualifiers[0];
1869 aux.ti.tq1 = (int) t->type_qualifiers[1];
1870 aux.ti.tq2 = (int) t->type_qualifiers[2];
1871 aux.ti.tq3 = (int) t->type_qualifiers[3];
1872 aux.ti.tq4 = (int) t->type_qualifiers[4];
1873 aux.ti.tq5 = (int) t->type_qualifiers[5];
1874
1875
1876 /* For anything that adds additional information, we must not hash,
1877 so check here, and reset our state. */
1878
1879 if (state != hash_no
1880 && (t->type_qualifiers[0] == tq_Array
1881 || t->type_qualifiers[1] == tq_Array
1882 || t->type_qualifiers[2] == tq_Array
1883 || t->type_qualifiers[3] == tq_Array
1884 || t->type_qualifiers[4] == tq_Array
1885 || t->type_qualifiers[5] == tq_Array
1886 || t->basic_type == bt_Struct
1887 || t->basic_type == bt_Union
1888 || t->basic_type == bt_Enum
1889 || t->bitfield
1890 || t->num_dims > 0))
1891 state = hash_no;
1892
1893 /* See if we can hash this type, and save some space, but some types
1894 can't be hashed (because they contain arrays or continuations),
1895 and others can be put into the hash list, but cannot use existing
1896 types because other aux entries precede this one. */
1897
1898 if (state != hash_no)
1899 {
1900 register thash_t *hash_ptr;
1901 register symint_t hi;
1902
1903 hi = aux.isym & ((1 << HASHBITS) - 1);
1904 hi %= THASH_SIZE;
1905
1906 for (hash_ptr = hash_tbl[hi];
1907 hash_ptr != (thash_t *)0;
1908 hash_ptr = hash_ptr->next)
1909 {
1910 if (aux.isym == hash_ptr->type.isym)
1911 break;
1912 }
1913
1914 if (hash_ptr != (thash_t *) NULL && state == hash_yes)
1915 return hash_ptr->indx;
1916
1917 if (hash_ptr == (thash_t *) NULL)
1918 {
1919 hash_ptr = allocate_thash ();
1920 hash_ptr->next = hash_tbl[hi];
1921 hash_ptr->type = aux;
1922 hash_ptr->indx = vp->num_allocated;
1923 hash_tbl[hi] = hash_ptr;
1924 }
1925 }
1926
1927 /* Everything is set up, add the aux symbol. */
1928 if (vp->objects_last_page == vp->objects_per_page)
1929 add_varray_page (vp);
1930
1931 aux_ptr = &vp->last->datum->aux[ vp->objects_last_page++ ];
1932 aux_ptr->type = aux_tir;
1933 aux_ptr->data = aux;
1934
1935 ret = vp->num_allocated++;
1936
1937 /* Add bitfield length if it exists.
1938
1939 NOTE: Mips documentation claims bitfield goes at the end of the
1940 AUX record, but the DECstation compiler emits it here.
1941 (This would only make a difference for enum bitfields.)
1942
1943 Also note: We use the last size given since gcc may emit 2
1944 for an enum bitfield. */
1945
1946 if (t->bitfield)
1947 (void) add_aux_sym_symint ((symint_t)t->sizes[t->num_sizes-1]);
1948
1949
1950 /* Add tag information if needed. Structure, union, and enum
1951 references add 2 aux symbols: a [file index, symbol index]
1952 pointer to the structure type, and the current file index. */
1953
1954 if (t->basic_type == bt_Struct
1955 || t->basic_type == bt_Union
1956 || t->basic_type == bt_Enum)
1957 {
1958 register symint_t file_index = t->tag_ptr->ifd;
1959 register localsym_t *sym = t->tag_ptr->sym;
1960 register forward_t *forward_ref = allocate_forward ();
1961
1962 if (sym != (localsym_t *) NULL)
1963 {
1964 forward_ref->next = sym->forward_ref;
1965 sym->forward_ref = forward_ref;
1966 }
1967 else
1968 {
1969 forward_ref->next = t->tag_ptr->forward_ref;
1970 t->tag_ptr->forward_ref = forward_ref;
1971 }
1972
1973 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil);
1974 forward_ref->index_ptr
1975 = &vp->last->datum->aux[ vp->objects_last_page - 1];
1976
1977 (void) add_aux_sym_symint (file_index);
1978 forward_ref->ifd_ptr
1979 = &vp->last->datum->aux[ vp->objects_last_page - 1];
1980 }
1981
1982 /* Add information about array bounds if they exist. */
1983 for (i = 0; i < t->num_dims; i++)
1984 {
1985 (void) add_aux_sym_rndx (ST_RFDESCAPE,
1986 cur_file_ptr->int_type);
1987
1988 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/
1989 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */
1990 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/
1991 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */
1992 ? 0
1993 : (t->sizes[i] * 8) / t->dimensions[i]);
1994 };
1995
1996 /* NOTE: Mips documentation claims that the bitfield width goes here.
1997 But it needs to be emitted earlier. */
1998
1999 return ret;
2000 }
2001 \f
2002 /* Add a tag to the tag table (unless it already exists). */
2003
2004 static tag_t *
2005 get_tag (tag, sym, basic_type)
2006 const char *tag; /* tag name */
2007 localsym_t *sym; /* tag start block */
2008 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
2009 {
2010 shash_t *hash_ptr;
2011 const char *err;
2012 tag_t *tag_ptr;
2013
2014 if (cur_file_ptr == (efdr_t *) NULL)
2015 as_fatal ("no current file pointer");
2016
2017 hash_ptr = (shash_t *) hash_find (tag_hash, tag);
2018
2019 if (hash_ptr != (shash_t *) NULL
2020 && hash_ptr->tag_ptr != (tag_t *) NULL)
2021 {
2022 tag_ptr = hash_ptr->tag_ptr;
2023 if (sym != (localsym_t *) NULL)
2024 {
2025 tag_ptr->basic_type = basic_type;
2026 tag_ptr->ifd = cur_file_ptr->file_index;
2027 tag_ptr->sym = sym;
2028 }
2029 return tag_ptr;
2030 }
2031
2032 if (hash_ptr == (shash_t *) NULL)
2033 {
2034 char *perm;
2035
2036 perm = xmalloc ((unsigned long) (strlen (tag) + 1));
2037 strcpy (perm, 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 (ptag)
2067 tag_t *ptag; /* pointer to tag information */
2068 {
2069 shash_t *hash_ptr = ptag->hash_ptr;
2070 char *name = hash_ptr->string;
2071 localsym_t *sym;
2072 forward_t **pf;
2073
2074 #ifdef ECOFF_DEBUG
2075 if (debug > 1)
2076 {
2077 char *agg_type = "{unknown aggregate type}";
2078 switch (ptag->basic_type)
2079 {
2080 case bt_Struct: agg_type = "struct"; break;
2081 case bt_Union: agg_type = "union"; break;
2082 case bt_Enum: agg_type = "enum"; break;
2083 default: break;
2084 }
2085
2086 fprintf (stderr, "unknown %s %.*s found\n", agg_type,
2087 hash_ptr->len, name_start);
2088 }
2089 #endif
2090
2091 sym = add_ecoff_symbol (name,
2092 st_Block,
2093 sc_Info,
2094 (symbolS *) NULL,
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 (symint_t) 0,
2103 (symint_t) 0);
2104
2105 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next)
2106 ;
2107 *pf = ptag->forward_ref;
2108 }
2109 \f
2110 /* Add a procedure to the current file's list of procedures, and record
2111 this is the current procedure. */
2112
2113 static void
2114 add_procedure (func)
2115 char *func; /* func name */
2116 {
2117 register varray_t *vp;
2118 register proc_t *new_proc_ptr;
2119
2120 #ifdef ECOFF_DEBUG
2121 if (debug)
2122 fputc ('\n', stderr);
2123 #endif
2124
2125 if (cur_file_ptr == (efdr_t *) NULL)
2126 as_fatal ("no current file pointer");
2127
2128 vp = &cur_file_ptr->procs;
2129
2130 if (vp->objects_last_page == vp->objects_per_page)
2131 add_varray_page (vp);
2132
2133 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++];
2134
2135 if (first_proc_ptr == (proc_t *) NULL)
2136 first_proc_ptr = new_proc_ptr;
2137
2138 vp->num_allocated++;
2139
2140 new_proc_ptr->pdr.isym = -1;
2141 new_proc_ptr->pdr.iline = -1;
2142 new_proc_ptr->pdr.lnLow = -1;
2143 new_proc_ptr->pdr.lnHigh = -1;
2144
2145 /* Push the start of the function. */
2146 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text,
2147 symbol_find_or_make (func),
2148 (symint_t) 0, (symint_t) 0);
2149
2150 ++proc_cnt;
2151
2152 /* Fill in the linenos preceding the .ent, if any. */
2153 if (noproc_lineno != (lineno_list_t *) NULL)
2154 {
2155 lineno_list_t *l;
2156
2157 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next)
2158 l->proc = new_proc_ptr;
2159 *last_lineno_ptr = noproc_lineno;
2160 while (*last_lineno_ptr != NULL)
2161 last_lineno_ptr = &(*last_lineno_ptr)->next;
2162 noproc_lineno = (lineno_list_t *) NULL;
2163 }
2164 }
2165 \f
2166 /* Add a new filename, and set up all of the file relative
2167 virtual arrays (strings, symbols, aux syms, etc.). Record
2168 where the current file structure lives. */
2169
2170 static void
2171 add_file (file_name, indx)
2172 const char *file_name; /* file name */
2173 int indx;
2174 {
2175 register int first_ch;
2176 register efdr_t *fil_ptr;
2177
2178 #ifdef ECOFF_DEBUG
2179 if (debug)
2180 fprintf (stderr, "\tfile\t%.*s\n", len, file_start);
2181 #endif
2182
2183 /* If the file name is NULL, then no .file symbol appeared, and we
2184 want to use the actual file name. */
2185 if (file_name == (const char *) NULL)
2186 {
2187 char *file;
2188
2189 if (first_file != (efdr_t *) NULL)
2190 as_fatal ("fake .file after real one");
2191 as_where (&file, (unsigned int *) NULL);
2192 file_name = (const char *) file;
2193 generate_asm_line_stab = 1;
2194 }
2195 else
2196 generate_asm_line_stab = 0;
2197
2198 #ifndef NO_LISTING
2199 if (listing)
2200 listing_source_file (file_name);
2201 #endif
2202
2203 /* If we're creating stabs, then we don't actually make a new FDR.
2204 Instead, we just create a stabs symbol. */
2205 if (stabs_seen)
2206 {
2207 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2208 symbol_new ("L0\001", now_seg,
2209 (valueT) frag_now_fix (),
2210 frag_now),
2211 0, ECOFF_MARK_STAB (N_SOL));
2212 return;
2213 }
2214
2215 first_ch = *file_name;
2216
2217 /* See if the file has already been created. */
2218 for (fil_ptr = first_file;
2219 fil_ptr != (efdr_t *) NULL;
2220 fil_ptr = fil_ptr->next_file)
2221 {
2222 if (first_ch == fil_ptr->name[0]
2223 && strcmp (file_name, fil_ptr->name) == 0)
2224 {
2225 cur_file_ptr = fil_ptr;
2226 break;
2227 }
2228 }
2229
2230 /* If this is a new file, create it. */
2231 if (fil_ptr == (efdr_t *) NULL)
2232 {
2233 if (file_desc.objects_last_page == file_desc.objects_per_page)
2234 add_varray_page (&file_desc);
2235
2236 fil_ptr = cur_file_ptr =
2237 &file_desc.last->datum->file[file_desc.objects_last_page++];
2238 *fil_ptr = init_file;
2239
2240 fil_ptr->file_index = current_file_idx++;
2241 ++file_desc.num_allocated;
2242
2243 /* Allocate the string hash table. */
2244 fil_ptr->str_hash = hash_new ();
2245
2246 /* Make sure 0 byte in string table is null */
2247 add_string (&fil_ptr->strings,
2248 fil_ptr->str_hash,
2249 "",
2250 (shash_t **)0);
2251
2252 if (strlen (file_name) > PAGE_USIZE - 2)
2253 as_fatal ("Filename goes over one page boundary.");
2254
2255 /* Push the start of the filename. We assume that the filename
2256 will be stored at string offset 1. */
2257 (void) add_ecoff_symbol (file_name, st_File, sc_Text,
2258 (symbolS *) NULL,
2259 (symint_t) 0, (symint_t) 0);
2260 fil_ptr->fdr.rss = 1;
2261 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1];
2262
2263 /* Update the linked list of file descriptors. */
2264 *last_file_ptr = fil_ptr;
2265 last_file_ptr = &fil_ptr->next_file;
2266
2267 /* Add void & int types to the file (void should be first to catch
2268 errant 0's within the index fields). */
2269 fil_ptr->void_type = add_aux_sym_tir (&void_type_info,
2270 hash_yes,
2271 &cur_file_ptr->thash_head[0]);
2272
2273 fil_ptr->int_type = add_aux_sym_tir (&int_type_info,
2274 hash_yes,
2275 &cur_file_ptr->thash_head[0]);
2276 if (generate_asm_line_stab)
2277 {
2278 static char itstr[] = "int:t1=r1;-2147483648;2147483647;";
2279 mark_stabs (0);
2280 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2281 symbol_new ("L0\001", now_seg,
2282 (valueT) frag_now_fix (),
2283 frag_now),
2284 0, ECOFF_MARK_STAB (N_SO));
2285 (void) add_ecoff_symbol (itstr, st_Nil, sc_Nil,
2286 (symbolS *)NULL, 0, ECOFF_MARK_STAB (N_LSYM));
2287 }
2288 }
2289 }
2290 \f
2291 #ifdef ECOFF_DEBUG
2292
2293 /* Convert storage class to string. */
2294
2295 static char *
2296 sc_to_string(storage_class)
2297 sc_t storage_class;
2298 {
2299 switch(storage_class)
2300 {
2301 case sc_Nil: return "Nil,";
2302 case sc_Text: return "Text,";
2303 case sc_Data: return "Data,";
2304 case sc_Bss: return "Bss,";
2305 case sc_Register: return "Register,";
2306 case sc_Abs: return "Abs,";
2307 case sc_Undefined: return "Undefined,";
2308 case sc_CdbLocal: return "CdbLocal,";
2309 case sc_Bits: return "Bits,";
2310 case sc_CdbSystem: return "CdbSystem,";
2311 case sc_RegImage: return "RegImage,";
2312 case sc_Info: return "Info,";
2313 case sc_UserStruct: return "UserStruct,";
2314 case sc_SData: return "SData,";
2315 case sc_SBss: return "SBss,";
2316 case sc_RData: return "RData,";
2317 case sc_Var: return "Var,";
2318 case sc_Common: return "Common,";
2319 case sc_SCommon: return "SCommon,";
2320 case sc_VarRegister: return "VarRegister,";
2321 case sc_Variant: return "Variant,";
2322 case sc_SUndefined: return "SUndefined,";
2323 case sc_Init: return "Init,";
2324 case sc_Max: return "Max,";
2325 }
2326
2327 return "???,";
2328 }
2329
2330 #endif /* DEBUG */
2331 \f
2332 #ifdef ECOFF_DEBUG
2333
2334 /* Convert symbol type to string. */
2335
2336 static char *
2337 st_to_string(symbol_type)
2338 st_t symbol_type;
2339 {
2340 switch(symbol_type)
2341 {
2342 case st_Nil: return "Nil,";
2343 case st_Global: return "Global,";
2344 case st_Static: return "Static,";
2345 case st_Param: return "Param,";
2346 case st_Local: return "Local,";
2347 case st_Label: return "Label,";
2348 case st_Proc: return "Proc,";
2349 case st_Block: return "Block,";
2350 case st_End: return "End,";
2351 case st_Member: return "Member,";
2352 case st_Typedef: return "Typedef,";
2353 case st_File: return "File,";
2354 case st_RegReloc: return "RegReloc,";
2355 case st_Forward: return "Forward,";
2356 case st_StaticProc: return "StaticProc,";
2357 case st_Constant: return "Constant,";
2358 case st_Str: return "String,";
2359 case st_Number: return "Number,";
2360 case st_Expr: return "Expr,";
2361 case st_Type: return "Type,";
2362 case st_Max: return "Max,";
2363 }
2364
2365 return "???,";
2366 }
2367
2368 #endif /* DEBUG */
2369 \f
2370 /* Parse .begin directives which have a label as the first argument
2371 which gives the location of the start of the block. */
2372
2373 void
2374 ecoff_directive_begin (ignore)
2375 int ignore;
2376 {
2377 char *name;
2378 char name_end;
2379
2380 if (cur_file_ptr == (efdr_t *) NULL)
2381 {
2382 as_warn (".begin directive without a preceding .file directive");
2383 demand_empty_rest_of_line ();
2384 return;
2385 }
2386
2387 if (cur_proc_ptr == (proc_t *) NULL)
2388 {
2389 as_warn (".begin directive without a preceding .ent directive");
2390 demand_empty_rest_of_line ();
2391 return;
2392 }
2393
2394 name = input_line_pointer;
2395 name_end = get_symbol_end ();
2396
2397 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text,
2398 symbol_find_or_make (name),
2399 (symint_t) 0, (symint_t) 0);
2400
2401 *input_line_pointer = name_end;
2402
2403 /* The line number follows, but we don't use it. */
2404 (void) get_absolute_expression ();
2405 demand_empty_rest_of_line ();
2406 }
2407 \f
2408 /* Parse .bend directives which have a label as the first argument
2409 which gives the location of the end of the block. */
2410
2411 void
2412 ecoff_directive_bend (ignore)
2413 int ignore;
2414 {
2415 char *name;
2416 char name_end;
2417 symbolS *endsym;
2418
2419 if (cur_file_ptr == (efdr_t *) NULL)
2420 {
2421 as_warn (".bend directive without a preceding .file directive");
2422 demand_empty_rest_of_line ();
2423 return;
2424 }
2425
2426 if (cur_proc_ptr == (proc_t *) NULL)
2427 {
2428 as_warn (".bend directive without a preceding .ent directive");
2429 demand_empty_rest_of_line ();
2430 return;
2431 }
2432
2433 name = input_line_pointer;
2434 name_end = get_symbol_end ();
2435
2436 /* The value is the distance between the .bend directive and the
2437 corresponding symbol. We fill in the offset when we write out
2438 the symbol. */
2439 endsym = symbol_find (name);
2440 if (endsym == (symbolS *) NULL)
2441 as_warn (".bend directive names unknown symbol");
2442 else
2443 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym,
2444 (symint_t) 0, (symint_t) 0);
2445
2446 *input_line_pointer = name_end;
2447
2448 /* The line number follows, but we don't use it. */
2449 (void) get_absolute_expression ();
2450 demand_empty_rest_of_line ();
2451 }
2452 \f
2453 /* COFF debugging information is provided as a series of directives
2454 (.def, .scl, etc.). We build up information as we read the
2455 directives in the following static variables, and file it away when
2456 we reach the .endef directive. */
2457 static char *coff_sym_name;
2458 static type_info_t coff_type;
2459 static sc_t coff_storage_class;
2460 static st_t coff_symbol_typ;
2461 static int coff_is_function;
2462 static char *coff_tag;
2463 static valueT coff_value;
2464 symbolS *coff_sym_value;
2465 static int coff_inside_enumeration;
2466
2467 /* Handle a .def directive: start defining a symbol. */
2468
2469 void
2470 ecoff_directive_def (ignore)
2471 int ignore;
2472 {
2473 char *name;
2474 char name_end;
2475
2476 SKIP_WHITESPACE ();
2477
2478 name = input_line_pointer;
2479 name_end = get_symbol_end ();
2480
2481 if (coff_sym_name != (char *) NULL)
2482 as_warn (".def pseudo-op used inside of .def/.endef; ignored");
2483 else if (*name == '\0')
2484 as_warn ("Empty symbol name in .def; ignored");
2485 else
2486 {
2487 if (coff_sym_name != (char *) NULL)
2488 free (coff_sym_name);
2489 if (coff_tag != (char *) NULL)
2490 free (coff_tag);
2491 coff_sym_name = (char *) xmalloc ((unsigned long) (strlen (name) + 1));
2492 strcpy (coff_sym_name, name);
2493 coff_type = type_info_init;
2494 coff_storage_class = sc_Nil;
2495 coff_symbol_typ = st_Nil;
2496 coff_is_function = 0;
2497 coff_tag = (char *) NULL;
2498 coff_value = 0;
2499 coff_sym_value = (symbolS *) NULL;
2500 }
2501
2502 *input_line_pointer = name_end;
2503
2504 demand_empty_rest_of_line ();
2505 }
2506
2507 /* Handle a .dim directive, used to give dimensions for an array. The
2508 arguments are comma separated numbers. mips-tfile assumes that
2509 there will not be more than 6 dimensions, and gdb won't read any
2510 more than that anyhow, so I will also make that assumption. */
2511
2512 void
2513 ecoff_directive_dim (ignore)
2514 int ignore;
2515 {
2516 int dimens[N_TQ];
2517 int i;
2518
2519 if (coff_sym_name == (char *) NULL)
2520 {
2521 as_warn (".dim pseudo-op used outside of .def/.endef; ignored");
2522 demand_empty_rest_of_line ();
2523 return;
2524 }
2525
2526 for (i = 0; i < N_TQ; i++)
2527 {
2528 SKIP_WHITESPACE ();
2529 dimens[i] = get_absolute_expression ();
2530 if (*input_line_pointer == ',')
2531 ++input_line_pointer;
2532 else
2533 {
2534 if (*input_line_pointer != '\n'
2535 && *input_line_pointer != ';')
2536 as_warn ("Badly formed .dim directive");
2537 break;
2538 }
2539 }
2540
2541 if (i == N_TQ)
2542 --i;
2543
2544 /* The dimensions are stored away in reverse order. */
2545 for (; i >= 0; i--)
2546 {
2547 if (coff_type.num_dims >= N_TQ)
2548 {
2549 as_warn ("Too many .dim entries");
2550 break;
2551 }
2552 coff_type.dimensions[coff_type.num_dims] = dimens[i];
2553 ++coff_type.num_dims;
2554 }
2555
2556 demand_empty_rest_of_line ();
2557 }
2558
2559 /* Handle a .scl directive, which sets the COFF storage class of the
2560 symbol. */
2561
2562 void
2563 ecoff_directive_scl (ignore)
2564 int ignore;
2565 {
2566 long val;
2567
2568 if (coff_sym_name == (char *) NULL)
2569 {
2570 as_warn (".scl pseudo-op used outside of .def/.endef; ignored");
2571 demand_empty_rest_of_line ();
2572 return;
2573 }
2574
2575 val = get_absolute_expression ();
2576
2577 coff_symbol_typ = map_coff_sym_type[val];
2578 coff_storage_class = map_coff_storage[val];
2579
2580 demand_empty_rest_of_line ();
2581 }
2582
2583 /* Handle a .size directive. For some reason mips-tfile.c thinks that
2584 .size can have multiple arguments. We humor it, although gcc will
2585 never generate more than one argument. */
2586
2587 void
2588 ecoff_directive_size (ignore)
2589 int ignore;
2590 {
2591 int sizes[N_TQ];
2592 int i;
2593
2594 if (coff_sym_name == (char *) NULL)
2595 {
2596 as_warn (".size pseudo-op used outside of .def/.endef; ignored");
2597 demand_empty_rest_of_line ();
2598 return;
2599 }
2600
2601 for (i = 0; i < N_TQ; i++)
2602 {
2603 SKIP_WHITESPACE ();
2604 sizes[i] = get_absolute_expression ();
2605 if (*input_line_pointer == ',')
2606 ++input_line_pointer;
2607 else
2608 {
2609 if (*input_line_pointer != '\n'
2610 && *input_line_pointer != ';')
2611 as_warn ("Badly formed .size directive");
2612 break;
2613 }
2614 }
2615
2616 if (i == N_TQ)
2617 --i;
2618
2619 /* The sizes are stored away in reverse order. */
2620 for (; i >= 0; i--)
2621 {
2622 if (coff_type.num_sizes >= N_TQ)
2623 {
2624 as_warn ("Too many .size entries");
2625 break;
2626 }
2627 coff_type.sizes[coff_type.num_sizes] = sizes[i];
2628 ++coff_type.num_sizes;
2629 }
2630
2631 demand_empty_rest_of_line ();
2632 }
2633
2634 /* Handle the .type directive, which gives the COFF type of the
2635 symbol. */
2636
2637 void
2638 ecoff_directive_type (ignore)
2639 int ignore;
2640 {
2641 long val;
2642 tq_t *tq_ptr;
2643 tq_t *tq_shft;
2644
2645 if (coff_sym_name == (char *) NULL)
2646 {
2647 as_warn (".type pseudo-op used outside of .def/.endef; ignored");
2648 demand_empty_rest_of_line ();
2649 return;
2650 }
2651
2652 val = get_absolute_expression ();
2653
2654 coff_type.orig_type = BTYPE (val);
2655 coff_type.basic_type = map_coff_types[coff_type.orig_type];
2656
2657 tq_ptr = &coff_type.type_qualifiers[N_TQ];
2658 while (val &~ N_BTMASK)
2659 {
2660 if (tq_ptr == &coff_type.type_qualifiers[0])
2661 {
2662 as_warn ("Too derived values in .type argument");
2663 break;
2664 }
2665 if (ISPTR (val))
2666 *--tq_ptr = tq_Ptr;
2667 else if (ISFCN (val))
2668 *--tq_ptr = tq_Proc;
2669 else if (ISARY (val))
2670 *--tq_ptr = tq_Array;
2671 else
2672 as_fatal ("Unrecognized .type argument");
2673
2674 val = DECREF (val);
2675 }
2676
2677 tq_shft = &coff_type.type_qualifiers[0];
2678 while (tq_ptr != &coff_type.type_qualifiers[N_TQ])
2679 *tq_shft++ = *tq_ptr++;
2680
2681 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc)
2682 {
2683 /* If this is a function, ignore it, so that we don't get two
2684 entries (one from the .ent, and one for the .def that
2685 precedes it). Save the type information so that the end
2686 block can properly add it after the begin block index. For
2687 MIPS knows what reason, we must strip off the function type
2688 at this point. */
2689 coff_is_function = 1;
2690 tq_shft[-1] = tq_Nil;
2691 }
2692
2693 while (tq_shft != &coff_type.type_qualifiers[N_TQ])
2694 *tq_shft++ = tq_Nil;
2695
2696 demand_empty_rest_of_line ();
2697 }
2698
2699 /* Handle the .tag directive, which gives the name of a structure,
2700 union or enum. */
2701
2702 void
2703 ecoff_directive_tag (ignore)
2704 int ignore;
2705 {
2706 char *name;
2707 char name_end;
2708
2709 if (coff_sym_name == (char *) NULL)
2710 {
2711 as_warn (".tag pseudo-op used outside of .def/.endef; ignored");
2712 demand_empty_rest_of_line ();
2713 return;
2714 }
2715
2716 name = input_line_pointer;
2717 name_end = get_symbol_end ();
2718
2719 coff_tag = (char *) xmalloc ((unsigned long) (strlen (name) + 1));
2720 strcpy (coff_tag, name);
2721
2722 *input_line_pointer = name_end;
2723
2724 demand_empty_rest_of_line ();
2725 }
2726
2727 /* Handle the .val directive, which gives the value of the symbol. It
2728 may be the name of a static or global symbol. */
2729
2730 void
2731 ecoff_directive_val (ignore)
2732 int ignore;
2733 {
2734 if (coff_sym_name == (char *) NULL)
2735 {
2736 as_warn (".val pseudo-op used outside of .def/.endef; ignored");
2737 demand_empty_rest_of_line ();
2738 return;
2739 }
2740
2741 if (! is_name_beginner ((unsigned char) *input_line_pointer))
2742 coff_value = get_absolute_expression ();
2743 else
2744 {
2745 char *name;
2746 char name_end;
2747
2748 name = input_line_pointer;
2749 name_end = get_symbol_end ();
2750
2751 if (strcmp (name, ".") == 0)
2752 as_warn ("`.val .' not supported");
2753 else
2754 coff_sym_value = symbol_find_or_make (name);
2755
2756 *input_line_pointer = name_end;
2757
2758 /* FIXME: gcc can generate address expressions here in unusual
2759 cases (search for "obscure" in sdbout.c), although this is
2760 very unlikely for a MIPS chip. */
2761 }
2762
2763 demand_empty_rest_of_line ();
2764 }
2765
2766 /* Handle the .endef directive, which terminates processing of COFF
2767 debugging information for a symbol. */
2768
2769 void
2770 ecoff_directive_endef (ignore)
2771 int ignore;
2772 {
2773 char *name;
2774 symint_t indx;
2775 localsym_t *sym;
2776
2777 demand_empty_rest_of_line ();
2778
2779 if (coff_sym_name == (char *) NULL)
2780 {
2781 as_warn (".endef pseudo-op used before .def; ignored");
2782 return;
2783 }
2784
2785 name = coff_sym_name;
2786 coff_sym_name = (char *) NULL;
2787
2788 /* If the symbol is a static or external, we have already gotten the
2789 appropriate type and class, so make sure we don't override those
2790 values. This is needed because there are some type and classes
2791 that are not in COFF, such as short data, etc. */
2792 if (coff_sym_value != (symbolS *) NULL)
2793 {
2794 coff_symbol_typ = st_Nil;
2795 coff_storage_class = sc_Nil;
2796 }
2797
2798 coff_type.extra_sizes = coff_tag != (char *) NULL;
2799 if (coff_type.num_dims > 0)
2800 {
2801 int diff = coff_type.num_dims - coff_type.num_sizes;
2802 int i = coff_type.num_dims - 1;
2803 int j;
2804
2805 if (coff_type.num_sizes != 1 || diff < 0)
2806 {
2807 as_warn ("Bad COFF debugging info");
2808 return;
2809 }
2810
2811 /* If this is an array, make sure the same number of dimensions
2812 and sizes were passed, creating extra sizes for multiply
2813 dimensioned arrays if not passed. */
2814 coff_type.extra_sizes = 0;
2815 if (diff)
2816 {
2817 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1;
2818 while (j >= 0)
2819 {
2820 coff_type.sizes[j] = (((j - diff) >= 0)
2821 ? coff_type.sizes[j - diff]
2822 : 0);
2823 j--;
2824 }
2825
2826 coff_type.num_sizes = i + 1;
2827 for (i--; i >= 0; i--)
2828 coff_type.sizes[i] = (coff_type.sizes[i + 1]
2829 / coff_type.dimensions[i + 1]);
2830 }
2831 }
2832 else if (coff_symbol_typ == st_Member
2833 && coff_type.num_sizes - coff_type.extra_sizes == 1)
2834 {
2835 /* Is this a bitfield? This is indicated by a structure memeber
2836 having a size field that isn't an array. */
2837 coff_type.bitfield = 1;
2838 }
2839
2840 /* Except for enumeration members & begin/ending of scopes, put the
2841 type word in the aux. symbol table. */
2842 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End)
2843 indx = 0;
2844 else if (coff_inside_enumeration)
2845 indx = cur_file_ptr->void_type;
2846 else
2847 {
2848 if (coff_type.basic_type == bt_Struct
2849 || coff_type.basic_type == bt_Union
2850 || coff_type.basic_type == bt_Enum)
2851 {
2852 if (coff_tag == (char *) NULL)
2853 {
2854 as_warn ("No tag specified for %s", name);
2855 return;
2856 }
2857
2858 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL,
2859 coff_type.basic_type);
2860 }
2861
2862 if (coff_is_function)
2863 {
2864 last_func_type_info = coff_type;
2865 last_func_sym_value = coff_sym_value;
2866 return;
2867 }
2868
2869 indx = add_aux_sym_tir (&coff_type,
2870 hash_yes,
2871 &cur_file_ptr->thash_head[0]);
2872 }
2873
2874 /* Do any last minute adjustments that are necessary. */
2875 switch (coff_symbol_typ)
2876 {
2877 default:
2878 break;
2879
2880 /* For the beginning of structs, unions, and enumerations, the
2881 size info needs to be passed in the value field. */
2882 case st_Block:
2883 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes
2884 != 1)
2885 {
2886 as_warn ("Bad COFF debugging information");
2887 return;
2888 }
2889 else
2890 coff_value = coff_type.sizes[0];
2891
2892 coff_inside_enumeration = (coff_type.orig_type == T_ENUM);
2893 break;
2894
2895 /* For the end of structs, unions, and enumerations, omit the
2896 name which is always ".eos". This needs to be done last, so
2897 that any error reporting above gives the correct name. */
2898 case st_End:
2899 free (name);
2900 name = (char *) NULL;
2901 coff_value = 0;
2902 coff_inside_enumeration = 0;
2903 break;
2904
2905 /* Members of structures and unions that aren't bitfields, need
2906 to adjust the value from a byte offset to a bit offset.
2907 Members of enumerations do not have the value adjusted, and
2908 can be distinguished by indx == indexNil. For enumerations,
2909 update the maximum enumeration value. */
2910 case st_Member:
2911 if (! coff_type.bitfield && ! coff_inside_enumeration)
2912 coff_value *= 8;
2913
2914 break;
2915 }
2916
2917 /* Add the symbol. */
2918 sym = add_ecoff_symbol (name,
2919 coff_symbol_typ,
2920 coff_storage_class,
2921 coff_sym_value,
2922 (symint_t) coff_value,
2923 indx);
2924
2925 /* deal with struct, union, and enum tags. */
2926 if (coff_symbol_typ == st_Block)
2927 {
2928 /* Create or update the tag information. */
2929 tag_t *tag_ptr = get_tag (name,
2930 sym,
2931 coff_type.basic_type);
2932 forward_t **pf;
2933
2934 /* Remember any forward references. */
2935 for (pf = &sym->forward_ref;
2936 *pf != (forward_t *) NULL;
2937 pf = &(*pf)->next)
2938 ;
2939 *pf = tag_ptr->forward_ref;
2940 tag_ptr->forward_ref = (forward_t *) NULL;
2941 }
2942 }
2943 \f
2944 /* Parse .end directives. */
2945
2946 void
2947 ecoff_directive_end (ignore)
2948 int ignore;
2949 {
2950 char *name;
2951 char name_end;
2952 register int ch;
2953 symbolS *ent;
2954
2955 if (cur_file_ptr == (efdr_t *) NULL)
2956 {
2957 as_warn (".end directive without a preceding .file directive");
2958 demand_empty_rest_of_line ();
2959 return;
2960 }
2961
2962 if (cur_proc_ptr == (proc_t *) NULL)
2963 {
2964 as_warn (".end directive without a preceding .ent directive");
2965 demand_empty_rest_of_line ();
2966 return;
2967 }
2968
2969 name = input_line_pointer;
2970 name_end = get_symbol_end ();
2971
2972 ch = *name;
2973 if (! is_name_beginner (ch))
2974 {
2975 as_warn (".end directive has no name");
2976 *input_line_pointer = name_end;
2977 demand_empty_rest_of_line ();
2978 return;
2979 }
2980
2981 /* The value is the distance between the .end directive and the
2982 corresponding symbol. We create a fake symbol to hold the
2983 current location, and put in the offset when we write out the
2984 symbol. */
2985 ent = symbol_find (name);
2986 if (ent == (symbolS *) NULL)
2987 as_warn (".end directive names unknown symbol");
2988 else
2989 {
2990 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text,
2991 symbol_new ("L0\001", now_seg,
2992 (valueT) frag_now_fix (),
2993 frag_now),
2994 (symint_t) 0, (symint_t) 0);
2995 if (generate_asm_line_stab)
2996 {
2997 char *n;
2998
2999 n = xmalloc (strlen (name) + 4);
3000 strcpy (n, name);
3001 strcat (n, ":F1");
3002 (void) add_ecoff_symbol ((const char *) n, stGlobal, scText,
3003 ent, 0, ECOFF_MARK_STAB (N_FUN));
3004 }
3005 }
3006
3007 cur_proc_ptr = (proc_t *) NULL;
3008
3009 *input_line_pointer = name_end;
3010 demand_empty_rest_of_line ();
3011 }
3012 \f
3013 /* Parse .ent directives. */
3014
3015 void
3016 ecoff_directive_ent (ignore)
3017 int ignore;
3018 {
3019 char *name;
3020 char name_end;
3021 register int ch;
3022
3023 if (cur_file_ptr == (efdr_t *) NULL)
3024 add_file ((const char *) NULL, 0);
3025
3026 if (cur_proc_ptr != (proc_t *) NULL)
3027 {
3028 as_warn ("second .ent directive found before .end directive");
3029 demand_empty_rest_of_line ();
3030 return;
3031 }
3032
3033 name = input_line_pointer;
3034 name_end = get_symbol_end ();
3035
3036 ch = *name;
3037 if (! is_name_beginner (ch))
3038 {
3039 as_warn (".ent directive has no name");
3040 *input_line_pointer = name_end;
3041 demand_empty_rest_of_line ();
3042 return;
3043 }
3044
3045 add_procedure (name);
3046
3047 *input_line_pointer = name_end;
3048
3049 /* The .ent directive is sometimes followed by a number. I'm not
3050 really sure what the number means. I don't see any way to store
3051 the information in the PDR. The Irix 4 assembler seems to ignore
3052 the information. */
3053 SKIP_WHITESPACE ();
3054 if (*input_line_pointer == ',')
3055 {
3056 ++input_line_pointer;
3057 SKIP_WHITESPACE ();
3058 }
3059 if (isdigit (*input_line_pointer) || *input_line_pointer == '-')
3060 (void) get_absolute_expression ();
3061
3062 demand_empty_rest_of_line ();
3063 }
3064 \f
3065 /* Parse .file directives. */
3066
3067 void
3068 ecoff_directive_file (ignore)
3069 int ignore;
3070 {
3071 int indx;
3072 char *name;
3073 int len;
3074
3075 if (cur_proc_ptr != (proc_t *) NULL)
3076 {
3077 as_warn ("No way to handle .file within .ent/.end section");
3078 demand_empty_rest_of_line ();
3079 return;
3080 }
3081
3082 indx = (int) get_absolute_expression ();
3083
3084 /* FIXME: we don't have to save the name here. */
3085 name = demand_copy_C_string (&len);
3086
3087 add_file (name, indx - 1);
3088
3089 demand_empty_rest_of_line ();
3090 }
3091 \f
3092 /* Parse .fmask directives. */
3093
3094 void
3095 ecoff_directive_fmask (ignore)
3096 int ignore;
3097 {
3098 long val;
3099
3100 if (cur_proc_ptr == (proc_t *) NULL)
3101 {
3102 as_warn (".fmask outside of .ent");
3103 demand_empty_rest_of_line ();
3104 return;
3105 }
3106
3107 if (get_absolute_expression_and_terminator (&val) != ',')
3108 {
3109 as_warn ("Bad .fmask directive");
3110 --input_line_pointer;
3111 demand_empty_rest_of_line ();
3112 return;
3113 }
3114
3115 cur_proc_ptr->pdr.fregmask = val;
3116 cur_proc_ptr->pdr.fregoffset = get_absolute_expression ();
3117
3118 demand_empty_rest_of_line ();
3119 }
3120 \f
3121 /* Parse .frame directives. */
3122
3123 void
3124 ecoff_directive_frame (ignore)
3125 int ignore;
3126 {
3127 long val;
3128
3129 if (cur_proc_ptr == (proc_t *) NULL)
3130 {
3131 as_warn (".frame outside of .ent");
3132 demand_empty_rest_of_line ();
3133 return;
3134 }
3135
3136 cur_proc_ptr->pdr.framereg = tc_get_register (1);
3137
3138 SKIP_WHITESPACE ();
3139 if (*input_line_pointer++ != ','
3140 || get_absolute_expression_and_terminator (&val) != ',')
3141 {
3142 as_warn ("Bad .frame directive");
3143 --input_line_pointer;
3144 demand_empty_rest_of_line ();
3145 return;
3146 }
3147
3148 cur_proc_ptr->pdr.frameoffset = val;
3149
3150 cur_proc_ptr->pdr.pcreg = tc_get_register (0);
3151
3152 #if 0 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according
3153 to Sandro. I don't yet know where this value should be stored, if
3154 anywhere. */
3155 demand_empty_rest_of_line ();
3156 #else
3157 s_ignore (42);
3158 #endif
3159 }
3160 \f
3161 /* Parse .mask directives. */
3162
3163 void
3164 ecoff_directive_mask (ignore)
3165 int ignore;
3166 {
3167 long val;
3168
3169 if (cur_proc_ptr == (proc_t *) NULL)
3170 {
3171 as_warn (".mask outside of .ent");
3172 demand_empty_rest_of_line ();
3173 return;
3174 }
3175
3176 if (get_absolute_expression_and_terminator (&val) != ',')
3177 {
3178 as_warn ("Bad .mask directive");
3179 --input_line_pointer;
3180 demand_empty_rest_of_line ();
3181 return;
3182 }
3183
3184 cur_proc_ptr->pdr.regmask = val;
3185 cur_proc_ptr->pdr.regoffset = get_absolute_expression ();
3186
3187 demand_empty_rest_of_line ();
3188 }
3189 \f
3190 /* Parse .loc directives. */
3191
3192 void
3193 ecoff_directive_loc (ignore)
3194 int ignore;
3195 {
3196 lineno_list_t *list;
3197 symint_t lineno;
3198
3199 if (cur_file_ptr == (efdr_t *) NULL)
3200 {
3201 as_warn (".loc before .file");
3202 demand_empty_rest_of_line ();
3203 return;
3204 }
3205
3206 if (now_seg != text_section)
3207 {
3208 as_warn (".loc outside of .text");
3209 demand_empty_rest_of_line ();
3210 return;
3211 }
3212
3213 /* Skip the file number. */
3214 SKIP_WHITESPACE ();
3215 get_absolute_expression ();
3216 SKIP_WHITESPACE ();
3217
3218 lineno = get_absolute_expression ();
3219
3220 #ifndef NO_LISTING
3221 if (listing)
3222 listing_source_line (lineno);
3223 #endif
3224
3225 /* If we're building stabs, then output a special label rather than
3226 ECOFF line number info. */
3227 if (stabs_seen)
3228 {
3229 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text,
3230 symbol_new ("L0\001", now_seg,
3231 (valueT) frag_now_fix (),
3232 frag_now),
3233 0, lineno);
3234 return;
3235 }
3236
3237 list = allocate_lineno_list ();
3238
3239 list->next = (lineno_list_t *) NULL;
3240 list->file = cur_file_ptr;
3241 list->proc = cur_proc_ptr;
3242 list->frag = frag_now;
3243 list->paddr = frag_now_fix ();
3244 list->lineno = lineno;
3245
3246 /* A .loc directive will sometimes appear before a .ent directive,
3247 which means that cur_proc_ptr will be NULL here. Arrange to
3248 patch this up. */
3249 if (cur_proc_ptr == (proc_t *) NULL)
3250 {
3251 lineno_list_t **pl;
3252
3253 pl = &noproc_lineno;
3254 while (*pl != (lineno_list_t *) NULL)
3255 pl = &(*pl)->next;
3256 *pl = list;
3257 }
3258 else
3259 {
3260 *last_lineno_ptr = list;
3261 last_lineno_ptr = &list->next;
3262 }
3263 }
3264 \f
3265 /* Make sure the @stabs symbol is emitted. */
3266
3267 static void
3268 mark_stabs (ignore)
3269 int ignore;
3270 {
3271 if (! stabs_seen)
3272 {
3273 /* Add a dummy @stabs dymbol. */
3274 stabs_seen = 1;
3275 (void) add_ecoff_symbol (stabs_symbol, stNil, scInfo,
3276 (symbolS *) NULL,
3277 (symint_t) -1, ECOFF_MARK_STAB (0));
3278 }
3279 }
3280 \f
3281 /* Handle .stabs directives. The actual parsing routine is done by a
3282 generic routine. This routine is called via OBJ_PROCESS_STAB.
3283 When this is called, input_line_pointer will be pointing at the
3284 value field of the stab.
3285
3286 .stabs directives have five fields:
3287 "string" a string, encoding the type information.
3288 code a numeric code, defined in <stab.h>
3289 0 a zero
3290 desc a zero or line number
3291 value a numeric value or an address.
3292
3293 If the value is relocatable, we transform this into:
3294 iss points as an index into string space
3295 value value from lookup of the name
3296 st st from lookup of the name
3297 sc sc from lookup of the name
3298 index code|CODE_MASK
3299
3300 If the value is not relocatable, we transform this into:
3301 iss points as an index into string space
3302 value value
3303 st st_Nil
3304 sc sc_Nil
3305 index code|CODE_MASK
3306
3307 .stabn directives have four fields (string is null):
3308 code a numeric code, defined in <stab.h>
3309 0 a zero
3310 desc a zero or a line number
3311 value a numeric value or an address. */
3312
3313 void
3314 ecoff_stab (what, string, type, other, desc)
3315 int what;
3316 const char *string;
3317 int type;
3318 int other;
3319 int desc;
3320 {
3321 efdr_t *save_file_ptr = cur_file_ptr;
3322 symbolS *sym;
3323 symint_t value;
3324 st_t st;
3325 sc_t sc;
3326 symint_t indx;
3327 localsym_t *hold = NULL;
3328
3329 /* We don't handle .stabd. */
3330 if (what != 's' && what != 'n')
3331 {
3332 as_bad (".stab%c is not supported", what);
3333 return;
3334 }
3335
3336 /* A .stabn uses a null name, not an empty string. */
3337 if (what == 'n')
3338 string = NULL;
3339
3340 /* We ignore the other field. */
3341 if (other != 0)
3342 as_warn (".stab%c: ignoring non-zero other field", what);
3343
3344 /* Make sure we have a current file. */
3345 if (cur_file_ptr == (efdr_t *) NULL)
3346 {
3347 add_file ((const char *) NULL, 0);
3348 save_file_ptr = cur_file_ptr;
3349 }
3350
3351 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
3352 signal to gdb. */
3353 if (stabs_seen == 0)
3354 mark_stabs (0);
3355
3356 /* Line number stabs are handled differently, since they have two
3357 values, the line number and the address of the label. We use the
3358 index field (aka desc) to hold the line number, and the value
3359 field to hold the address. The symbol type is st_Label, which
3360 should be different from the other stabs, so that gdb can
3361 recognize it. */
3362 if (type == N_SLINE)
3363 {
3364 SYMR dummy_symr;
3365 char *name;
3366 char name_end;
3367
3368 #ifndef NO_LISTING
3369 if (listing)
3370 listing_source_line ((unsigned int) desc);
3371 #endif
3372
3373 dummy_symr.index = desc;
3374 if (dummy_symr.index != desc)
3375 {
3376 as_warn ("Line number (%d) for .stab%c directive cannot fit in index field (20 bits)",
3377 desc, what);
3378 return;
3379 }
3380
3381 name = input_line_pointer;
3382 name_end = get_symbol_end ();
3383
3384 sym = symbol_find_or_make (name);
3385 *input_line_pointer = name_end;
3386
3387 value = 0;
3388 st = st_Label;
3389 sc = sc_Text;
3390 indx = desc;
3391 }
3392 else
3393 {
3394 #ifndef NO_LISTING
3395 if (listing && (type == N_SO || type == N_SOL))
3396 listing_source_file (string);
3397 #endif
3398
3399 if (isdigit (*input_line_pointer)
3400 || *input_line_pointer == '-'
3401 || *input_line_pointer == '+')
3402 {
3403 st = st_Nil;
3404 sc = sc_Nil;
3405 sym = (symbolS *) NULL;
3406 value = get_absolute_expression ();
3407 }
3408 else if (! is_name_beginner ((unsigned char) *input_line_pointer))
3409 {
3410 as_warn ("Illegal .stab%c directive, bad character", what);
3411 return;
3412 }
3413 else
3414 {
3415 char *name;
3416 char name_end;
3417
3418 name = input_line_pointer;
3419 name_end = get_symbol_end ();
3420
3421 sym = symbol_find_or_make (name);
3422
3423 sc = sc_Nil;
3424 st = st_Nil;
3425 value = 0;
3426
3427 *input_line_pointer = name_end;
3428 if (name_end == '+' || name_end == '-')
3429 {
3430 ++input_line_pointer;
3431 value = get_absolute_expression ();
3432 if (name_end == '-')
3433 value = - value;
3434 }
3435 }
3436
3437 indx = ECOFF_MARK_STAB (type);
3438 }
3439
3440 /* Don't store the stabs symbol we are creating as the type of the
3441 ECOFF symbol. We want to compute the type of the ECOFF symbol
3442 independently. */
3443 if (sym != (symbolS *) NULL)
3444 hold = sym->ecoff_symbol;
3445
3446 (void) add_ecoff_symbol (string, st, sc, sym, value, indx);
3447
3448 if (sym != (symbolS *) NULL)
3449 sym->ecoff_symbol = hold;
3450
3451 /* Restore normal file type. */
3452 cur_file_ptr = save_file_ptr;
3453 }
3454 \f
3455 /* Frob an ECOFF symbol. Small common symbols go into a special
3456 .scommon section rather than bfd_com_section. */
3457
3458 void
3459 ecoff_frob_symbol (sym)
3460 symbolS *sym;
3461 {
3462 if (S_IS_COMMON (sym)
3463 && S_GET_VALUE (sym) > 0
3464 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput))
3465 {
3466 static asection scom_section;
3467 static asymbol scom_symbol;
3468
3469 /* We must construct a fake section similar to bfd_com_section
3470 but with the name .scommon. */
3471 if (scom_section.name == NULL)
3472 {
3473 scom_section = bfd_com_section;
3474 scom_section.name = ".scommon";
3475 scom_section.output_section = &scom_section;
3476 scom_section.symbol = &scom_symbol;
3477 scom_section.symbol_ptr_ptr = &scom_section.symbol;
3478 scom_symbol = *bfd_com_section.symbol;
3479 scom_symbol.name = ".scommon";
3480 scom_symbol.section = &scom_section;
3481 }
3482 S_SET_SEGMENT (sym, &scom_section);
3483 }
3484 }
3485 \f
3486 /* Add bytes to the symbolic information buffer. */
3487
3488 static char *
3489 ecoff_add_bytes (buf, bufend, bufptr, need)
3490 char **buf;
3491 char **bufend;
3492 char *bufptr;
3493 unsigned long need;
3494 {
3495 unsigned long at;
3496 unsigned long want;
3497
3498 at = bufptr - *buf;
3499 need -= *bufend - bufptr;
3500 if (need < PAGE_SIZE)
3501 need = PAGE_SIZE;
3502 want = (*bufend - *buf) + need;
3503 *buf = xrealloc (*buf, want);
3504 *bufend = *buf + want;
3505 return *buf + at;
3506 }
3507
3508 /* Adjust the symbolic information buffer to the alignment required
3509 for the ECOFF target debugging information. */
3510
3511 static unsigned long
3512 ecoff_padding_adjust (backend, buf, bufend, offset, bufptrptr)
3513 const struct ecoff_debug_swap *backend;
3514 char **buf;
3515 char **bufend;
3516 unsigned long offset;
3517 char **bufptrptr;
3518 {
3519 bfd_size_type align;
3520
3521 align = backend->debug_align;
3522 if ((offset & (align - 1)) != 0)
3523 {
3524 unsigned long add;
3525
3526 add = align - (offset & (align - 1));
3527 if (*bufend - (*buf + offset) < add)
3528 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add);
3529 memset (*buf + offset, 0, add);
3530 offset += add;
3531 if (bufptrptr != (char **) NULL)
3532 *bufptrptr = *buf + offset;
3533 }
3534
3535 return offset;
3536 }
3537
3538 /* Build the line number information. */
3539
3540 static unsigned long
3541 ecoff_build_lineno (backend, buf, bufend, offset, linecntptr)
3542 const struct ecoff_debug_swap *backend;
3543 char **buf;
3544 char **bufend;
3545 unsigned long offset;
3546 long *linecntptr;
3547 {
3548 char *bufptr;
3549 register lineno_list_t *l;
3550 lineno_list_t *last;
3551 efdr_t *file;
3552 proc_t *proc;
3553 unsigned long c;
3554 long iline;
3555 long totcount;
3556 lineno_list_t first;
3557
3558 if (linecntptr != (long *) NULL)
3559 *linecntptr = 0;
3560
3561 bufptr = *buf + offset;
3562
3563 file = (efdr_t *) NULL;
3564 proc = (proc_t *) NULL;
3565 last = (lineno_list_t *) NULL;
3566 c = offset;
3567 iline = 0;
3568 totcount = 0;
3569
3570 /* For some reason the address of the first procedure is ignored
3571 when reading line numbers. This doesn't matter if the address of
3572 the first procedure is 0, but when gcc is generating MIPS
3573 embedded PIC code, it will put strings in the .text section
3574 before the first procedure. We cope by inserting a dummy line if
3575 the address of the first procedure is not 0. Hopefully this
3576 won't screw things up too badly. */
3577 if (first_proc_ptr != (proc_t *) NULL
3578 && first_lineno != (lineno_list_t *) NULL
3579 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym)
3580 + bfd_get_section_vma (stdoutput,
3581 S_GET_SEGMENT (first_proc_ptr->sym->as_sym)))
3582 != 0))
3583 {
3584 first.file = first_lineno->file;
3585 first.proc = first_lineno->proc;
3586 first.frag = &zero_address_frag;
3587 first.paddr = 0;
3588 first.lineno = 0;
3589
3590 first.next = first_lineno;
3591 first_lineno = &first;
3592 }
3593
3594 for (l = first_lineno; l != (lineno_list_t *) NULL; l = l->next)
3595 {
3596 long count;
3597 long delta;
3598
3599 /* Get the offset to the memory address of the next line number
3600 (in words). Do this first, so that we can skip ahead to the
3601 next useful line number entry. */
3602 if (l->next == (lineno_list_t *) NULL)
3603 {
3604 /* We want a count of zero, but it will be decremented
3605 before it is used. */
3606 count = 1;
3607 }
3608 else
3609 {
3610 count = ((l->next->frag->fr_address + l->next->paddr
3611 - (l->frag->fr_address + l->paddr))
3612 >> 2);
3613 if (count <= 0)
3614 {
3615 /* Don't change last, so we still get the right delta. */
3616 continue;
3617 }
3618 }
3619
3620 if (l->file != file || l->proc != proc)
3621 {
3622 if (l->proc != proc && proc != (proc_t *) NULL)
3623 proc->pdr.lnHigh = last->lineno;
3624 if (l->file != file && file != (efdr_t *) NULL)
3625 {
3626 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3627 /* The cline field is ill-documented. This is a guess
3628 at the right value. */
3629 file->fdr.cline = totcount + count;
3630 if (linecntptr != (long *) NULL)
3631 *linecntptr += totcount + count;
3632 totcount = 0;
3633 }
3634
3635 if (l->file != file)
3636 {
3637 file = l->file;
3638 file->fdr.ilineBase = iline;
3639 file->fdr.cbLineOffset = c;
3640 }
3641 if (l->proc != proc)
3642 {
3643 proc = l->proc;
3644 if (proc != (proc_t *) NULL)
3645 {
3646 proc->pdr.lnLow = l->lineno;
3647 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset;
3648 /* The iline field is ill-documented. This is a
3649 guess at the right value. */
3650 proc->pdr.iline = totcount;
3651 }
3652 }
3653
3654 last = (lineno_list_t *) NULL;
3655 }
3656
3657 totcount += count;
3658
3659 /* Get the offset to this line number. */
3660 if (last == (lineno_list_t *) NULL)
3661 delta = 0;
3662 else
3663 delta = l->lineno - last->lineno;
3664
3665 /* Put in the offset to this line number. */
3666 while (delta != 0)
3667 {
3668 int setcount;
3669
3670 /* 1 is added to each count read. */
3671 --count;
3672 /* We can only adjust the word count by up to 15 words at a
3673 time. */
3674 if (count <= 0x0f)
3675 {
3676 setcount = count;
3677 count = 0;
3678 }
3679 else
3680 {
3681 setcount = 0x0f;
3682 count -= 0x0f;
3683 }
3684 if (delta >= -7 && delta <= 7)
3685 {
3686 if (bufptr >= *bufend)
3687 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3688 *bufptr++ = setcount + (delta << 4);
3689 delta = 0;
3690 ++c;
3691 }
3692 else
3693 {
3694 int set;
3695
3696 if (*bufend - bufptr < 3)
3697 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3);
3698 *bufptr++ = setcount + (8 << 4);
3699 if (delta < -0x8000)
3700 {
3701 set = -0x8000;
3702 delta += 0x8000;
3703 }
3704 else if (delta > 0x7fff)
3705 {
3706 set = 0x7fff;
3707 delta -= 0x7fff;
3708 }
3709 else
3710 {
3711 set = delta;
3712 delta = 0;
3713 }
3714 *bufptr++ = set >> 8;
3715 *bufptr++ = set & 0xffff;
3716 c += 3;
3717 }
3718 }
3719
3720 /* Finish adjusting the count. */
3721 while (count > 0)
3722 {
3723 if (bufptr >= *bufend)
3724 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3725 /* 1 is added to each count read. */
3726 --count;
3727 if (count > 0x0f)
3728 {
3729 *bufptr++ = 0x0f;
3730 count -= 0x0f;
3731 }
3732 else
3733 {
3734 *bufptr++ = count;
3735 count = 0;
3736 }
3737 ++c;
3738 }
3739
3740 ++iline;
3741 last = l;
3742 }
3743
3744 if (proc != (proc_t *) NULL)
3745 proc->pdr.lnHigh = last->lineno;
3746 if (file != (efdr_t *) NULL)
3747 {
3748 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3749 file->fdr.cline = totcount;
3750 }
3751
3752 if (linecntptr != (long *) NULL)
3753 *linecntptr += totcount;
3754
3755 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr);
3756
3757 return c;
3758 }
3759
3760 /* Build and swap out the symbols. */
3761
3762 static unsigned long
3763 ecoff_build_symbols (backend, buf, bufend, offset)
3764 const struct ecoff_debug_swap *backend;
3765 char **buf;
3766 char **bufend;
3767 unsigned long offset;
3768 {
3769 const bfd_size_type external_sym_size = backend->external_sym_size;
3770 void (* const swap_sym_out) PARAMS ((bfd *, const SYMR *, PTR))
3771 = backend->swap_sym_out;
3772 char *sym_out;
3773 long isym;
3774 vlinks_t *file_link;
3775
3776 sym_out = *buf + offset;
3777
3778 isym = 0;
3779
3780 /* The symbols are stored by file. */
3781 for (file_link = file_desc.first;
3782 file_link != (vlinks_t *) NULL;
3783 file_link = file_link->next)
3784 {
3785 int ifilesym;
3786 int fil_cnt;
3787 efdr_t *fil_ptr;
3788 efdr_t *fil_end;
3789
3790 if (file_link->next == (vlinks_t *) NULL)
3791 fil_cnt = file_desc.objects_last_page;
3792 else
3793 fil_cnt = file_desc.objects_per_page;
3794 fil_ptr = file_link->datum->file;
3795 fil_end = fil_ptr + fil_cnt;
3796 for (; fil_ptr < fil_end; fil_ptr++)
3797 {
3798 vlinks_t *sym_link;
3799
3800 fil_ptr->fdr.isymBase = isym;
3801 ifilesym = isym;
3802 for (sym_link = fil_ptr->symbols.first;
3803 sym_link != (vlinks_t *) NULL;
3804 sym_link = sym_link->next)
3805 {
3806 int sym_cnt;
3807 localsym_t *sym_ptr;
3808 localsym_t *sym_end;
3809
3810 if (sym_link->next == (vlinks_t *) NULL)
3811 sym_cnt = fil_ptr->symbols.objects_last_page;
3812 else
3813 sym_cnt = fil_ptr->symbols.objects_per_page;
3814 sym_ptr = sym_link->datum->sym;
3815 sym_end = sym_ptr + sym_cnt;
3816 for (; sym_ptr < sym_end; sym_ptr++)
3817 {
3818 int local;
3819 symbolS *as_sym;
3820 forward_t *f;
3821
3822 know (sym_ptr->file_ptr == fil_ptr);
3823
3824 /* If there is no associated gas symbol, then this
3825 is a pure debugging symbol. We have already
3826 added the name (if any) to fil_ptr->strings.
3827 Otherwise we must decide whether this is an
3828 external or a local symbol (actually, it may be
3829 both if the local provides additional debugging
3830 information for the external). */
3831 local = 1;
3832 as_sym = sym_ptr->as_sym;
3833 if (as_sym != (symbolS *) NULL)
3834 {
3835 symint_t indx;
3836
3837 /* The value of a block start symbol is the
3838 offset from the start of the procedure. For
3839 other symbols we just use the gas value (but
3840 we must offset it by the vma of the section,
3841 just as BFD does, because BFD will not see
3842 this value). */
3843 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block
3844 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text)
3845 {
3846 symbolS *begin_sym;
3847
3848 know (sym_ptr->proc_ptr != (proc_t *) NULL);
3849 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
3850 if (S_GET_SEGMENT (as_sym)
3851 != S_GET_SEGMENT (begin_sym))
3852 as_warn (".begin/.bend in different segments");
3853 sym_ptr->ecoff_sym.asym.value =
3854 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
3855 }
3856 else
3857 sym_ptr->ecoff_sym.asym.value =
3858 (S_GET_VALUE (as_sym)
3859 + bfd_get_section_vma (stdoutput,
3860 S_GET_SEGMENT (as_sym)));
3861
3862 /* Set st_Proc to st_StaticProc for local
3863 functions. */
3864 if (sym_ptr->ecoff_sym.asym.st == st_Proc
3865 && S_IS_DEFINED (as_sym)
3866 && ! S_IS_EXTERNAL (as_sym))
3867 sym_ptr->ecoff_sym.asym.st = st_StaticProc;
3868
3869 /* Get the type and storage class based on where
3870 the symbol actually wound up. Traditionally,
3871 N_LBRAC and N_RBRAC are *not* relocated. */
3872 indx = sym_ptr->ecoff_sym.asym.index;
3873 if (sym_ptr->ecoff_sym.asym.st == st_Nil
3874 && sym_ptr->ecoff_sym.asym.sc == sc_Nil
3875 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
3876 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC)
3877 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC))))
3878 {
3879 segT seg;
3880 const char *segname;
3881 st_t st;
3882 sc_t sc;
3883
3884 seg = S_GET_SEGMENT (as_sym);
3885 segname = segment_name (seg);
3886
3887 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
3888 && (S_IS_EXTERNAL (as_sym)
3889 || ! S_IS_DEFINED (as_sym)))
3890 st = st_Global;
3891 else if (seg == text_section)
3892 st = st_Label;
3893 else
3894 st = st_Static;
3895
3896 if (! S_IS_DEFINED (as_sym))
3897 {
3898 if (as_sym->ecoff_extern_size == 0
3899 || (as_sym->ecoff_extern_size
3900 > bfd_get_gp_size (stdoutput)))
3901 sc = sc_Undefined;
3902 else
3903 {
3904 sc = sc_SUndefined;
3905 sym_ptr->ecoff_sym.asym.value =
3906 as_sym->ecoff_extern_size;
3907 }
3908 }
3909 else if (S_IS_COMMON (as_sym))
3910 {
3911 if (S_GET_VALUE (as_sym) > 0
3912 && (S_GET_VALUE (as_sym)
3913 <= bfd_get_gp_size (stdoutput)))
3914 sc = sc_SCommon;
3915 else
3916 sc = sc_Common;
3917 }
3918 else if (seg == text_section)
3919 sc = sc_Text;
3920 else if (seg == data_section)
3921 sc = sc_Data;
3922 else if (strcmp (segname, ".rdata") == 0
3923 || strcmp (segname, ".rodata") == 0)
3924 sc = sc_RData;
3925 else if (strcmp (segname, ".sdata") == 0)
3926 sc = sc_SData;
3927 else if (seg == bss_section)
3928 sc = sc_Bss;
3929 else if (strcmp (segname, ".sbss") == 0)
3930 sc = sc_SBss;
3931 else if (seg == &bfd_abs_section)
3932 sc = sc_Abs;
3933 else
3934 abort ();
3935
3936 sym_ptr->ecoff_sym.asym.st = (int) st;
3937 sym_ptr->ecoff_sym.asym.sc = (int) sc;
3938 }
3939
3940 /* This is just an external symbol if it is
3941 outside a procedure and it has a type.
3942 FIXME: g++ will generate symbols which have
3943 different names in the debugging information
3944 than the actual symbol. Should we handle
3945 them here? */
3946 if ((S_IS_EXTERNAL (as_sym)
3947 || ! S_IS_DEFINED (as_sym))
3948 && sym_ptr->proc_ptr == (proc_t *) NULL
3949 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil
3950 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym))
3951 local = 0;
3952
3953 /* If an st_end symbol has an associated gas
3954 symbol, then it is a local label created for
3955 a .bend or .end directive. Stabs line
3956 numbers will have \001 in the names. */
3957 if (local
3958 && sym_ptr->ecoff_sym.asym.st != st_End
3959 && strchr (sym_ptr->name, '\001') == 0)
3960 sym_ptr->ecoff_sym.asym.iss =
3961 add_string (&fil_ptr->strings,
3962 fil_ptr->str_hash,
3963 sym_ptr->name,
3964 (shash_t **) NULL);
3965 }
3966
3967 /* We now know the index of this symbol; fill in
3968 locations that have been waiting for that
3969 information. */
3970 if (sym_ptr->begin_ptr != (localsym_t *) NULL)
3971 {
3972 localsym_t *begin_ptr;
3973 st_t begin_type;
3974
3975 know (local);
3976 begin_ptr = sym_ptr->begin_ptr;
3977 know (begin_ptr->sym_index != -1);
3978 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index;
3979 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
3980 sym_ptr->ecoff_sym.asym.iss =
3981 begin_ptr->ecoff_sym.asym.iss;
3982
3983 begin_type = begin_ptr->ecoff_sym.asym.st;
3984 if (begin_type == st_File
3985 || begin_type == st_Block)
3986 {
3987 begin_ptr->ecoff_sym.asym.index =
3988 isym - ifilesym + 1;
3989 (*swap_sym_out) (stdoutput,
3990 &begin_ptr->ecoff_sym.asym,
3991 (*buf
3992 + offset
3993 + (begin_ptr->sym_index
3994 * external_sym_size)));
3995 }
3996 else
3997 {
3998 know (begin_ptr->index_ptr != (aux_t *) NULL);
3999 begin_ptr->index_ptr->data.isym =
4000 isym - ifilesym + 1;
4001 }
4002
4003 /* The value of the symbol marking the end of a
4004 procedure is the size of the procedure. The
4005 value of the symbol marking the end of a
4006 block is the offset from the start of the
4007 procedure to the block. */
4008 if (begin_type == st_Proc
4009 || begin_type == st_StaticProc)
4010 {
4011 know (as_sym != (symbolS *) NULL);
4012 know (begin_ptr->as_sym != (symbolS *) NULL);
4013 if (S_GET_SEGMENT (as_sym)
4014 != S_GET_SEGMENT (begin_ptr->as_sym))
4015 as_warn (".begin/.bend in different segments");
4016 sym_ptr->ecoff_sym.asym.value =
4017 (S_GET_VALUE (as_sym)
4018 - S_GET_VALUE (begin_ptr->as_sym));
4019 }
4020 else if (begin_type == st_Block
4021 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4022 {
4023 symbolS *begin_sym;
4024
4025 know (as_sym != (symbolS *) NULL);
4026 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4027 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4028 if (S_GET_SEGMENT (as_sym)
4029 != S_GET_SEGMENT (begin_sym))
4030 as_warn (".begin/.bend in different segments");
4031 sym_ptr->ecoff_sym.asym.value =
4032 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4033 }
4034 }
4035
4036 for (f = sym_ptr->forward_ref;
4037 f != (forward_t *) NULL;
4038 f = f->next)
4039 {
4040 know (local);
4041 f->ifd_ptr->data.isym = fil_ptr->file_index;
4042 f->index_ptr->data.rndx.index = isym - ifilesym;
4043 }
4044
4045 if (local)
4046 {
4047 if (*bufend - sym_out < external_sym_size)
4048 sym_out = ecoff_add_bytes (buf, bufend,
4049 sym_out,
4050 external_sym_size);
4051 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym,
4052 sym_out);
4053 sym_out += external_sym_size;
4054
4055 sym_ptr->sym_index = isym;
4056
4057 if (sym_ptr->proc_ptr != (proc_t *) NULL
4058 && sym_ptr->proc_ptr->sym == sym_ptr)
4059 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym;
4060
4061 ++isym;
4062 }
4063
4064 /* Record the local symbol index and file number in
4065 case this is an external symbol. Note that this
4066 destroys the asym.index field. */
4067 if (as_sym != (symbolS *) NULL
4068 && as_sym->ecoff_symbol == sym_ptr)
4069 {
4070 if (sym_ptr->ecoff_sym.asym.st == st_Proc
4071 || sym_ptr->ecoff_sym.asym.st == st_StaticProc)
4072 {
4073 know (local);
4074 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1;
4075 }
4076 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index;
4077 }
4078 }
4079 }
4080 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase;
4081 }
4082 }
4083
4084 return offset + isym * external_sym_size;
4085 }
4086
4087 /* Swap out the procedure information. */
4088
4089 static unsigned long
4090 ecoff_build_procs (backend, buf, bufend, offset)
4091 const struct ecoff_debug_swap *backend;
4092 char **buf;
4093 char **bufend;
4094 unsigned long offset;
4095 {
4096 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4097 void (* const swap_pdr_out) PARAMS ((bfd *, const PDR *, PTR))
4098 = backend->swap_pdr_out;
4099 char *pdr_out;
4100 int first_fil;
4101 long iproc;
4102 vlinks_t *file_link;
4103
4104 pdr_out = *buf + offset;
4105
4106 first_fil = 1;
4107 iproc = 0;
4108
4109 /* The procedures are stored by file. */
4110 for (file_link = file_desc.first;
4111 file_link != (vlinks_t *) NULL;
4112 file_link = file_link->next)
4113 {
4114 int fil_cnt;
4115 efdr_t *fil_ptr;
4116 efdr_t *fil_end;
4117
4118 if (file_link->next == (vlinks_t *) NULL)
4119 fil_cnt = file_desc.objects_last_page;
4120 else
4121 fil_cnt = file_desc.objects_per_page;
4122 fil_ptr = file_link->datum->file;
4123 fil_end = fil_ptr + fil_cnt;
4124 for (; fil_ptr < fil_end; fil_ptr++)
4125 {
4126 vlinks_t *proc_link;
4127 int first;
4128
4129 fil_ptr->fdr.ipdFirst = iproc;
4130 first = 1;
4131 for (proc_link = fil_ptr->procs.first;
4132 proc_link != (vlinks_t *) NULL;
4133 proc_link = proc_link->next)
4134 {
4135 int prc_cnt;
4136 proc_t *proc_ptr;
4137 proc_t *proc_end;
4138
4139 if (proc_link->next == (vlinks_t *) NULL)
4140 prc_cnt = fil_ptr->procs.objects_last_page;
4141 else
4142 prc_cnt = fil_ptr->procs.objects_per_page;
4143 proc_ptr = proc_link->datum->proc;
4144 proc_end = proc_ptr + prc_cnt;
4145 for (; proc_ptr < proc_end; proc_ptr++)
4146 {
4147 symbolS *adr_sym;
4148 unsigned long adr;
4149
4150 adr_sym = proc_ptr->sym->as_sym;
4151 adr = (S_GET_VALUE (adr_sym)
4152 + bfd_get_section_vma (stdoutput,
4153 S_GET_SEGMENT (adr_sym)));
4154 if (first)
4155 {
4156 if (first_fil)
4157 first_fil = 0;
4158 else
4159 fil_ptr->fdr.adr = adr;
4160 first = 0;
4161 }
4162 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr;
4163 if (*bufend - pdr_out < external_pdr_size)
4164 pdr_out = ecoff_add_bytes (buf, bufend,
4165 pdr_out,
4166 external_pdr_size);
4167 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out);
4168 pdr_out += external_pdr_size;
4169 ++iproc;
4170 }
4171 }
4172 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst;
4173 }
4174 }
4175
4176 return offset + iproc * external_pdr_size;
4177 }
4178
4179 /* Swap out the aux information. */
4180
4181 static unsigned long
4182 ecoff_build_aux (backend, buf, bufend, offset)
4183 const struct ecoff_debug_swap *backend;
4184 char **buf;
4185 char **bufend;
4186 unsigned long offset;
4187 {
4188 int bigendian;
4189 union aux_ext *aux_out;
4190 long iaux;
4191 vlinks_t *file_link;
4192
4193 bigendian = stdoutput->xvec->header_byteorder_big_p;
4194
4195 aux_out = (union aux_ext *) (*buf + offset);
4196
4197 iaux = 0;
4198
4199 /* The aux entries are stored by file. */
4200 for (file_link = file_desc.first;
4201 file_link != (vlinks_t *) NULL;
4202 file_link = file_link->next)
4203 {
4204 int fil_cnt;
4205 efdr_t *fil_ptr;
4206 efdr_t *fil_end;
4207
4208 if (file_link->next == (vlinks_t *) NULL)
4209 fil_cnt = file_desc.objects_last_page;
4210 else
4211 fil_cnt = file_desc.objects_per_page;
4212 fil_ptr = file_link->datum->file;
4213 fil_end = fil_ptr + fil_cnt;
4214 for (; fil_ptr < fil_end; fil_ptr++)
4215 {
4216 vlinks_t *aux_link;
4217
4218 fil_ptr->fdr.fBigendian = bigendian;
4219 fil_ptr->fdr.iauxBase = iaux;
4220 for (aux_link = fil_ptr->aux_syms.first;
4221 aux_link != (vlinks_t *) NULL;
4222 aux_link = aux_link->next)
4223 {
4224 int aux_cnt;
4225 aux_t *aux_ptr;
4226 aux_t *aux_end;
4227
4228 if (aux_link->next == (vlinks_t *) NULL)
4229 aux_cnt = fil_ptr->aux_syms.objects_last_page;
4230 else
4231 aux_cnt = fil_ptr->aux_syms.objects_per_page;
4232 aux_ptr = aux_link->datum->aux;
4233 aux_end = aux_ptr + aux_cnt;
4234 for (; aux_ptr < aux_end; aux_ptr++)
4235 {
4236 if (*bufend - (char *) aux_out < sizeof (union aux_ext))
4237 aux_out = ((union aux_ext *)
4238 ecoff_add_bytes (buf, bufend,
4239 (char *) aux_out,
4240 sizeof (union aux_ext)));
4241 switch (aux_ptr->type)
4242 {
4243 case aux_tir:
4244 (*backend->swap_tir_out) (bigendian,
4245 &aux_ptr->data.ti,
4246 &aux_out->a_ti);
4247 break;
4248 case aux_rndx:
4249 (*backend->swap_rndx_out) (bigendian,
4250 &aux_ptr->data.rndx,
4251 &aux_out->a_rndx);
4252 break;
4253 case aux_dnLow:
4254 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow,
4255 aux_out);
4256 break;
4257 case aux_dnHigh:
4258 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh,
4259 aux_out);
4260 break;
4261 case aux_isym:
4262 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym,
4263 aux_out);
4264 break;
4265 case aux_iss:
4266 AUX_PUT_ISS (bigendian, aux_ptr->data.iss,
4267 aux_out);
4268 break;
4269 case aux_width:
4270 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width,
4271 aux_out);
4272 break;
4273 case aux_count:
4274 AUX_PUT_COUNT (bigendian, aux_ptr->data.count,
4275 aux_out);
4276 break;
4277 }
4278
4279 ++aux_out;
4280 ++iaux;
4281 }
4282 }
4283 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase;
4284 }
4285 }
4286
4287 return ecoff_padding_adjust (backend, buf, bufend,
4288 offset + iaux * sizeof (union aux_ext),
4289 (char **) NULL);
4290 }
4291
4292 /* Copy out the strings from a varray_t. This returns the number of
4293 bytes copied, rather than the new offset. */
4294
4295 static unsigned long
4296 ecoff_build_strings (buf, bufend, offset, vp)
4297 char **buf;
4298 char **bufend;
4299 unsigned long offset;
4300 varray_t *vp;
4301 {
4302 unsigned long istr;
4303 char *str_out;
4304 vlinks_t *str_link;
4305
4306 str_out = *buf + offset;
4307
4308 istr = 0;
4309
4310 for (str_link = vp->first;
4311 str_link != (vlinks_t *) NULL;
4312 str_link = str_link->next)
4313 {
4314 unsigned long str_cnt;
4315
4316 if (str_link->next == (vlinks_t *) NULL)
4317 str_cnt = vp->objects_last_page;
4318 else
4319 str_cnt = vp->objects_per_page;
4320
4321 if (*bufend - str_out < str_cnt)
4322 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt);
4323
4324 memcpy (str_out, str_link->datum->byte, str_cnt);
4325 str_out += str_cnt;
4326 istr += str_cnt;
4327 }
4328
4329 return istr;
4330 }
4331
4332 /* Dump out the local strings. */
4333
4334 static unsigned long
4335 ecoff_build_ss (backend, buf, bufend, offset)
4336 const struct ecoff_debug_swap *backend;
4337 char **buf;
4338 char **bufend;
4339 unsigned long offset;
4340 {
4341 long iss;
4342 vlinks_t *file_link;
4343
4344 iss = 0;
4345
4346 for (file_link = file_desc.first;
4347 file_link != (vlinks_t *) NULL;
4348 file_link = file_link->next)
4349 {
4350 int fil_cnt;
4351 efdr_t *fil_ptr;
4352 efdr_t *fil_end;
4353
4354 if (file_link->next == (vlinks_t *) NULL)
4355 fil_cnt = file_desc.objects_last_page;
4356 else
4357 fil_cnt = file_desc.objects_per_page;
4358 fil_ptr = file_link->datum->file;
4359 fil_end = fil_ptr + fil_cnt;
4360 for (; fil_ptr < fil_end; fil_ptr++)
4361 {
4362 long ss_cnt;
4363
4364 fil_ptr->fdr.issBase = iss;
4365 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss,
4366 &fil_ptr->strings);
4367 fil_ptr->fdr.cbSs = ss_cnt;
4368 iss += ss_cnt;
4369 }
4370 }
4371
4372 return ecoff_padding_adjust (backend, buf, bufend, offset + iss,
4373 (char **) NULL);
4374 }
4375
4376 /* Swap out the file descriptors. */
4377
4378 static unsigned long
4379 ecoff_build_fdr (backend, buf, bufend, offset)
4380 const struct ecoff_debug_swap *backend;
4381 char **buf;
4382 char **bufend;
4383 unsigned long offset;
4384 {
4385 const bfd_size_type external_fdr_size = backend->external_fdr_size;
4386 void (* const swap_fdr_out) PARAMS ((bfd *, const FDR *, PTR))
4387 = backend->swap_fdr_out;
4388 long ifile;
4389 char *fdr_out;
4390 vlinks_t *file_link;
4391
4392 ifile = 0;
4393
4394 fdr_out = *buf + offset;
4395
4396 for (file_link = file_desc.first;
4397 file_link != (vlinks_t *) NULL;
4398 file_link = file_link->next)
4399 {
4400 int fil_cnt;
4401 efdr_t *fil_ptr;
4402 efdr_t *fil_end;
4403
4404 if (file_link->next == (vlinks_t *) NULL)
4405 fil_cnt = file_desc.objects_last_page;
4406 else
4407 fil_cnt = file_desc.objects_per_page;
4408 fil_ptr = file_link->datum->file;
4409 fil_end = fil_ptr + fil_cnt;
4410 for (; fil_ptr < fil_end; fil_ptr++)
4411 {
4412 if (*bufend - fdr_out < external_fdr_size)
4413 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out,
4414 external_fdr_size);
4415 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out);
4416 fdr_out += external_fdr_size;
4417 ++ifile;
4418 }
4419 }
4420
4421 return offset + ifile * external_fdr_size;
4422 }
4423
4424 /* Set up the external symbols. These are supposed to be handled by
4425 the backend. This routine just gets the right information and
4426 calls a backend function to deal with it. */
4427
4428 static void
4429 ecoff_setup_ext ()
4430 {
4431 register symbolS *sym;
4432
4433 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4434 {
4435 if (sym->ecoff_symbol == NULL)
4436 continue;
4437
4438 /* If this is a local symbol, then force the fields to zero. */
4439 if (! S_IS_EXTERNAL (sym)
4440 && S_IS_DEFINED (sym))
4441 {
4442 sym->ecoff_symbol->ecoff_sym.asym.value = 0;
4443 sym->ecoff_symbol->ecoff_sym.asym.st = (int) st_Nil;
4444 sym->ecoff_symbol->ecoff_sym.asym.sc = (int) sc_Nil;
4445 sym->ecoff_symbol->ecoff_sym.asym.index = indexNil;
4446 }
4447
4448 obj_ecoff_set_ext (sym, &sym->ecoff_symbol->ecoff_sym);
4449 }
4450 }
4451
4452 /* Build the ECOFF dbeugging information. */
4453
4454 unsigned long
4455 ecoff_build_debug (hdr, bufp, backend)
4456 HDRR *hdr;
4457 char **bufp;
4458 const struct ecoff_debug_swap *backend;
4459 {
4460 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4461 tag_t *ptag;
4462 tag_t *ptag_next;
4463 efdr_t *fil_ptr;
4464 int end_warning;
4465 efdr_t *hold_file_ptr;
4466 proc_t * hold_proc_ptr;
4467 symbolS *sym;
4468 char *buf;
4469 char *bufend;
4470 unsigned long offset;
4471
4472 /* Make sure we have a file. */
4473 if (first_file == (efdr_t *) NULL)
4474 add_file ((const char *) NULL, 0);
4475
4476 /* Handle any top level tags. */
4477 for (ptag = top_tag_head->first_tag;
4478 ptag != (tag_t *) NULL;
4479 ptag = ptag_next)
4480 {
4481 if (ptag->forward_ref != (forward_t *) NULL)
4482 add_unknown_tag (ptag);
4483
4484 ptag_next = ptag->same_block;
4485 ptag->hash_ptr->tag_ptr = ptag->same_name;
4486 free_tag (ptag);
4487 }
4488
4489 free_thead (top_tag_head);
4490
4491 /* Look through the symbols. Add debugging information for each
4492 symbol that has not already received it. */
4493 hold_file_ptr = cur_file_ptr;
4494 hold_proc_ptr = cur_proc_ptr;
4495 cur_proc_ptr = (proc_t *) NULL;
4496 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4497 {
4498 if (sym->ecoff_symbol != NULL
4499 || sym->ecoff_file == (efdr_t *) NULL
4500 || (sym->bsym->flags & BSF_SECTION_SYM) != 0)
4501 continue;
4502
4503 cur_file_ptr = sym->ecoff_file;
4504 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym,
4505 S_GET_VALUE (sym), indexNil);
4506 }
4507 cur_proc_ptr = hold_proc_ptr;
4508 cur_file_ptr = hold_file_ptr;
4509
4510 /* Output an ending symbol for all the files. We have to do this
4511 here for the last file, so we may as well do it for all of the
4512 files. */
4513 end_warning = 0;
4514 for (fil_ptr = first_file;
4515 fil_ptr != (efdr_t *) NULL;
4516 fil_ptr = fil_ptr->next_file)
4517 {
4518 cur_file_ptr = fil_ptr;
4519 while (cur_file_ptr->cur_scope->prev != (scope_t *) NULL)
4520 {
4521 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev;
4522 if (! end_warning)
4523 {
4524 as_warn ("Missing .end or .bend at end of file");
4525 end_warning = 1;
4526 }
4527 }
4528 (void) add_ecoff_symbol ((const char *) NULL,
4529 st_End, sc_Text,
4530 (symbolS *) NULL,
4531 (symint_t) 0,
4532 (symint_t) 0);
4533 }
4534
4535 /* Build the symbolic information. */
4536 offset = 0;
4537 buf = xmalloc (PAGE_SIZE);
4538 bufend = buf + PAGE_SIZE;
4539
4540 /* Build the line number information. */
4541 hdr->cbLineOffset = offset;
4542 offset = ecoff_build_lineno (backend, &buf, &bufend, offset,
4543 &hdr->ilineMax);
4544 hdr->cbLine = offset - hdr->cbLineOffset;
4545
4546 /* We don't use dense numbers at all. */
4547 hdr->idnMax = 0;
4548 hdr->cbDnOffset = 0;
4549
4550 /* We can't build the PDR table until we have built the symbols,
4551 because a PDR contains a symbol index. However, we set aside
4552 space at this point. */
4553 hdr->ipdMax = proc_cnt;
4554 hdr->cbPdOffset = offset;
4555 if (bufend - (buf + offset) < proc_cnt * external_pdr_size)
4556 (void) ecoff_add_bytes (&buf, &bufend, buf + offset,
4557 proc_cnt * external_pdr_size);
4558 offset += proc_cnt * external_pdr_size;
4559
4560 /* Build the local symbols. */
4561 hdr->cbSymOffset = offset;
4562 offset = ecoff_build_symbols (backend, &buf, &bufend, offset);
4563 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size;
4564
4565 /* Building the symbols initializes the symbol index in the PDR's.
4566 Now we can swap out the PDR's. */
4567 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset);
4568
4569 /* We don't use optimization symbols. */
4570 hdr->ioptMax = 0;
4571 hdr->cbOptOffset = 0;
4572
4573 /* Swap out the auxiliary type information. */
4574 hdr->cbAuxOffset = offset;
4575 offset = ecoff_build_aux (backend, &buf, &bufend, offset);
4576 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext);
4577
4578 /* Copy out the local strings. */
4579 hdr->cbSsOffset = offset;
4580 offset = ecoff_build_ss (backend, &buf, &bufend, offset);
4581 hdr->issMax = offset - hdr->cbSsOffset;
4582
4583 /* We don't use relative file descriptors. */
4584 hdr->crfd = 0;
4585 hdr->cbRfdOffset = 0;
4586
4587 /* Swap out the file descriptors. */
4588 hdr->cbFdOffset = offset;
4589 offset = ecoff_build_fdr (backend, &buf, &bufend, offset);
4590 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size;
4591
4592 /* Set up the external symbols, which are handled by the BFD back
4593 end. */
4594 hdr->issExtMax = 0;
4595 hdr->cbSsExtOffset = 0;
4596 hdr->iextMax = 0;
4597 hdr->cbExtOffset = 0;
4598 ecoff_setup_ext ();
4599
4600 know ((offset & (backend->debug_align - 1)) == 0);
4601
4602 /* FIXME: This value should be determined from the .verstamp directive,
4603 with reasonable defaults in config files. */
4604 #ifdef TC_ALPHA
4605 hdr->vstamp = 0x030b;
4606 #else
4607 hdr->vstamp = 0x020b;
4608 #endif
4609
4610 *bufp = buf;
4611 return offset;
4612 }
4613 \f
4614 /* Allocate a cluster of pages. */
4615
4616 #ifndef MALLOC_CHECK
4617
4618 static page_t *
4619 allocate_cluster (npages)
4620 unsigned long npages;
4621 {
4622 register page_t *value = (page_t *) xmalloc (npages * PAGE_USIZE);
4623
4624 #ifdef ECOFF_DEBUG
4625 if (debug > 3)
4626 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value);
4627 #endif
4628
4629 memset (value, 0, npages * PAGE_USIZE);
4630
4631 return value;
4632 }
4633
4634
4635 static page_t *cluster_ptr = NULL;
4636 static unsigned long pages_left = 0;
4637
4638 #endif /* MALLOC_CHECK */
4639
4640 /* Allocate one page (which is initialized to 0). */
4641
4642 static page_t *
4643 allocate_page ()
4644 {
4645 #ifndef MALLOC_CHECK
4646
4647 if (pages_left == 0)
4648 {
4649 pages_left = MAX_CLUSTER_PAGES;
4650 cluster_ptr = allocate_cluster (pages_left);
4651 }
4652
4653 pages_left--;
4654 return cluster_ptr++;
4655
4656 #else /* MALLOC_CHECK */
4657
4658 page_t *ptr;
4659
4660 ptr = xmalloc (PAGE_USIZE);
4661 memset (ptr, 0, PAGE_USIZE);
4662 return ptr;
4663
4664 #endif /* MALLOC_CHECK */
4665 }
4666 \f
4667 /* Allocate scoping information. */
4668
4669 static scope_t *
4670 allocate_scope ()
4671 {
4672 register scope_t *ptr;
4673 static scope_t initial_scope;
4674
4675 #ifndef MALLOC_CHECK
4676
4677 ptr = alloc_counts[(int)alloc_type_scope].free_list.f_scope;
4678 if (ptr != (scope_t *) NULL)
4679 alloc_counts[ (int)alloc_type_scope ].free_list.f_scope = ptr->free;
4680 else
4681 {
4682 register int unallocated = alloc_counts[(int)alloc_type_scope].unallocated;
4683 register page_t *cur_page = alloc_counts[(int)alloc_type_scope].cur_page;
4684
4685 if (unallocated == 0)
4686 {
4687 unallocated = PAGE_SIZE / sizeof (scope_t);
4688 alloc_counts[(int)alloc_type_scope].cur_page = cur_page = allocate_page ();
4689 alloc_counts[(int)alloc_type_scope].total_pages++;
4690 }
4691
4692 ptr = &cur_page->scope[--unallocated];
4693 alloc_counts[(int)alloc_type_scope].unallocated = unallocated;
4694 }
4695
4696 #else
4697
4698 ptr = (scope_t *) xmalloc (sizeof (scope_t));
4699
4700 #endif
4701
4702 alloc_counts[(int)alloc_type_scope].total_alloc++;
4703 *ptr = initial_scope;
4704 return ptr;
4705 }
4706
4707 /* Free scoping information. */
4708
4709 static void
4710 free_scope (ptr)
4711 scope_t *ptr;
4712 {
4713 alloc_counts[(int)alloc_type_scope].total_free++;
4714
4715 #ifndef MALLOC_CHECK
4716 ptr->free = alloc_counts[(int)alloc_type_scope].free_list.f_scope;
4717 alloc_counts[(int)alloc_type_scope].free_list.f_scope = ptr;
4718 #else
4719 free ((PTR) ptr);
4720 #endif
4721 }
4722 \f
4723 /* Allocate links for pages in a virtual array. */
4724
4725 static vlinks_t *
4726 allocate_vlinks ()
4727 {
4728 register vlinks_t *ptr;
4729 static vlinks_t initial_vlinks;
4730
4731 #ifndef MALLOC_CHECK
4732
4733 register int unallocated = alloc_counts[(int)alloc_type_vlinks].unallocated;
4734 register page_t *cur_page = alloc_counts[(int)alloc_type_vlinks].cur_page;
4735
4736 if (unallocated == 0)
4737 {
4738 unallocated = PAGE_SIZE / sizeof (vlinks_t);
4739 alloc_counts[(int)alloc_type_vlinks].cur_page = cur_page = allocate_page ();
4740 alloc_counts[(int)alloc_type_vlinks].total_pages++;
4741 }
4742
4743 ptr = &cur_page->vlinks[--unallocated];
4744 alloc_counts[(int)alloc_type_vlinks].unallocated = unallocated;
4745
4746 #else
4747
4748 ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t));
4749
4750 #endif
4751
4752 alloc_counts[(int)alloc_type_vlinks].total_alloc++;
4753 *ptr = initial_vlinks;
4754 return ptr;
4755 }
4756 \f
4757 /* Allocate string hash buckets. */
4758
4759 static shash_t *
4760 allocate_shash ()
4761 {
4762 register shash_t *ptr;
4763 static shash_t initial_shash;
4764
4765 #ifndef MALLOC_CHECK
4766
4767 register int unallocated = alloc_counts[(int)alloc_type_shash].unallocated;
4768 register page_t *cur_page = alloc_counts[(int)alloc_type_shash].cur_page;
4769
4770 if (unallocated == 0)
4771 {
4772 unallocated = PAGE_SIZE / sizeof (shash_t);
4773 alloc_counts[(int)alloc_type_shash].cur_page = cur_page = allocate_page ();
4774 alloc_counts[(int)alloc_type_shash].total_pages++;
4775 }
4776
4777 ptr = &cur_page->shash[--unallocated];
4778 alloc_counts[(int)alloc_type_shash].unallocated = unallocated;
4779
4780 #else
4781
4782 ptr = (shash_t *) xmalloc (sizeof (shash_t));
4783
4784 #endif
4785
4786 alloc_counts[(int)alloc_type_shash].total_alloc++;
4787 *ptr = initial_shash;
4788 return ptr;
4789 }
4790 \f
4791 /* Allocate type hash buckets. */
4792
4793 static thash_t *
4794 allocate_thash ()
4795 {
4796 register thash_t *ptr;
4797 static thash_t initial_thash;
4798
4799 #ifndef MALLOC_CHECK
4800
4801 register int unallocated = alloc_counts[(int)alloc_type_thash].unallocated;
4802 register page_t *cur_page = alloc_counts[(int)alloc_type_thash].cur_page;
4803
4804 if (unallocated == 0)
4805 {
4806 unallocated = PAGE_SIZE / sizeof (thash_t);
4807 alloc_counts[(int)alloc_type_thash].cur_page = cur_page = allocate_page ();
4808 alloc_counts[(int)alloc_type_thash].total_pages++;
4809 }
4810
4811 ptr = &cur_page->thash[--unallocated];
4812 alloc_counts[(int)alloc_type_thash].unallocated = unallocated;
4813
4814 #else
4815
4816 ptr = (thash_t *) xmalloc (sizeof (thash_t));
4817
4818 #endif
4819
4820 alloc_counts[(int)alloc_type_thash].total_alloc++;
4821 *ptr = initial_thash;
4822 return ptr;
4823 }
4824 \f
4825 /* Allocate structure, union, or enum tag information. */
4826
4827 static tag_t *
4828 allocate_tag ()
4829 {
4830 register tag_t *ptr;
4831 static tag_t initial_tag;
4832
4833 #ifndef MALLOC_CHECK
4834
4835 ptr = alloc_counts[(int)alloc_type_tag].free_list.f_tag;
4836 if (ptr != (tag_t *) NULL)
4837 alloc_counts[(int)alloc_type_tag].free_list.f_tag = ptr->free;
4838 else
4839 {
4840 register int unallocated = alloc_counts[(int)alloc_type_tag].unallocated;
4841 register page_t *cur_page = alloc_counts[(int)alloc_type_tag].cur_page;
4842
4843 if (unallocated == 0)
4844 {
4845 unallocated = PAGE_SIZE / sizeof (tag_t);
4846 alloc_counts[(int)alloc_type_tag].cur_page = cur_page = allocate_page ();
4847 alloc_counts[(int)alloc_type_tag].total_pages++;
4848 }
4849
4850 ptr = &cur_page->tag[--unallocated];
4851 alloc_counts[(int)alloc_type_tag].unallocated = unallocated;
4852 }
4853
4854 #else
4855
4856 ptr = (tag_t *) xmalloc (sizeof (tag_t));
4857
4858 #endif
4859
4860 alloc_counts[(int)alloc_type_tag].total_alloc++;
4861 *ptr = initial_tag;
4862 return ptr;
4863 }
4864
4865 /* Free scoping information. */
4866
4867 static void
4868 free_tag (ptr)
4869 tag_t *ptr;
4870 {
4871 alloc_counts[(int)alloc_type_tag].total_free++;
4872
4873 #ifndef MALLOC_CHECK
4874 ptr->free = alloc_counts[(int)alloc_type_tag].free_list.f_tag;
4875 alloc_counts[(int)alloc_type_tag].free_list.f_tag = ptr;
4876 #else
4877 free ((PTR_T) ptr);
4878 #endif
4879 }
4880 \f
4881 /* Allocate forward reference to a yet unknown tag. */
4882
4883 static forward_t *
4884 allocate_forward ()
4885 {
4886 register forward_t *ptr;
4887 static forward_t initial_forward;
4888
4889 #ifndef MALLOC_CHECK
4890
4891 register int unallocated = alloc_counts[(int)alloc_type_forward].unallocated;
4892 register page_t *cur_page = alloc_counts[(int)alloc_type_forward].cur_page;
4893
4894 if (unallocated == 0)
4895 {
4896 unallocated = PAGE_SIZE / sizeof (forward_t);
4897 alloc_counts[(int)alloc_type_forward].cur_page = cur_page = allocate_page ();
4898 alloc_counts[(int)alloc_type_forward].total_pages++;
4899 }
4900
4901 ptr = &cur_page->forward[--unallocated];
4902 alloc_counts[(int)alloc_type_forward].unallocated = unallocated;
4903
4904 #else
4905
4906 ptr = (forward_t *) xmalloc (sizeof (forward_t));
4907
4908 #endif
4909
4910 alloc_counts[(int)alloc_type_forward].total_alloc++;
4911 *ptr = initial_forward;
4912 return ptr;
4913 }
4914 \f
4915 /* Allocate head of type hash list. */
4916
4917 static thead_t *
4918 allocate_thead ()
4919 {
4920 register thead_t *ptr;
4921 static thead_t initial_thead;
4922
4923 #ifndef MALLOC_CHECK
4924
4925 ptr = alloc_counts[(int)alloc_type_thead].free_list.f_thead;
4926 if (ptr != (thead_t *) NULL)
4927 alloc_counts[ (int)alloc_type_thead ].free_list.f_thead = ptr->free;
4928 else
4929 {
4930 register int unallocated = alloc_counts[(int)alloc_type_thead].unallocated;
4931 register page_t *cur_page = alloc_counts[(int)alloc_type_thead].cur_page;
4932
4933 if (unallocated == 0)
4934 {
4935 unallocated = PAGE_SIZE / sizeof (thead_t);
4936 alloc_counts[(int)alloc_type_thead].cur_page = cur_page = allocate_page ();
4937 alloc_counts[(int)alloc_type_thead].total_pages++;
4938 }
4939
4940 ptr = &cur_page->thead[--unallocated];
4941 alloc_counts[(int)alloc_type_thead].unallocated = unallocated;
4942 }
4943
4944 #else
4945
4946 ptr = (thead_t *) xmalloc (sizeof (thead_t));
4947
4948 #endif
4949
4950 alloc_counts[(int)alloc_type_thead].total_alloc++;
4951 *ptr = initial_thead;
4952 return ptr;
4953 }
4954
4955 /* Free scoping information. */
4956
4957 static void
4958 free_thead (ptr)
4959 thead_t *ptr;
4960 {
4961 alloc_counts[(int)alloc_type_thead].total_free++;
4962
4963 #ifndef MALLOC_CHECK
4964 ptr->free = (thead_t *) alloc_counts[(int)alloc_type_thead].free_list.f_thead;
4965 alloc_counts[(int)alloc_type_thead].free_list.f_thead = ptr;
4966 #else
4967 free ((PTR_T) ptr);
4968 #endif
4969 }
4970 \f
4971 static lineno_list_t *
4972 allocate_lineno_list ()
4973 {
4974 register lineno_list_t *ptr;
4975 static lineno_list_t initial_lineno_list;
4976
4977 #ifndef MALLOC_CHECK
4978
4979 register int unallocated = alloc_counts[(int)alloc_type_lineno].unallocated;
4980 register page_t *cur_page = alloc_counts[(int)alloc_type_lineno].cur_page;
4981
4982 if (unallocated == 0)
4983 {
4984 unallocated = PAGE_SIZE / sizeof (lineno_list_t);
4985 alloc_counts[(int)alloc_type_lineno].cur_page = cur_page = allocate_page ();
4986 alloc_counts[(int)alloc_type_lineno].total_pages++;
4987 }
4988
4989 ptr = &cur_page->lineno[--unallocated];
4990 alloc_counts[(int)alloc_type_lineno].unallocated = unallocated;
4991
4992 #else
4993
4994 ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t));
4995
4996 #endif
4997
4998 alloc_counts[(int)alloc_type_lineno].total_alloc++;
4999 *ptr = initial_lineno_list;
5000 return ptr;
5001 }
5002
5003 void
5004 ecoff_set_gp_prolog_size (sz)
5005 int sz;
5006 {
5007 if (cur_proc_ptr == 0)
5008 abort ();
5009
5010 cur_proc_ptr->pdr.gp_prologue = sz;
5011 if (cur_proc_ptr->pdr.gp_prologue != sz)
5012 {
5013 as_warn ("GP prologue size exceeds field size, using 0 instead");
5014 cur_proc_ptr->pdr.gp_prologue = 0;
5015 }
5016
5017 cur_proc_ptr->pdr.gp_used = 1;
5018 }
5019
5020 static void
5021 generate_ecoff_stab (what, string, type, other, desc)
5022 int what;
5023 const char *string;
5024 int type;
5025 int other;
5026 int desc;
5027 {
5028 efdr_t *save_file_ptr = cur_file_ptr;
5029 symbolS *sym;
5030 symint_t value;
5031 st_t st;
5032 sc_t sc;
5033 symint_t indx;
5034 localsym_t *hold = NULL;
5035
5036 /* We don't handle .stabd. */
5037 if (what != 's' && what != 'n')
5038 {
5039 as_bad (".stab%c is not supported", what);
5040 return;
5041 }
5042
5043 /* We ignore the other field. */
5044 if (other != 0)
5045 as_warn (".stab%c: ignoring non-zero other field", what);
5046
5047 /* Make sure we have a current file. */
5048 if (cur_file_ptr == (efdr_t *) NULL)
5049 {
5050 add_file ((const char *) NULL, 0);
5051 save_file_ptr = cur_file_ptr;
5052 }
5053
5054 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
5055 signal to gdb. */
5056 if (stabs_seen == 0)
5057 mark_stabs (0);
5058
5059 /* Line number stabs are handled differently, since they have two
5060 values, the line number and the address of the label. We use the
5061 index field (aka desc) to hold the line number, and the value
5062 field to hold the address. The symbol type is st_Label, which
5063 should be different from the other stabs, so that gdb can
5064 recognize it. */
5065 if (type == N_SLINE)
5066 {
5067 SYMR dummy_symr;
5068
5069 #ifndef NO_LISTING
5070 if (listing)
5071 listing_source_line ((unsigned int) desc);
5072 #endif
5073
5074 dummy_symr.index = desc;
5075 if (dummy_symr.index != desc)
5076 {
5077 as_warn ("Line number (%d) for .stab%c directive cannot fit in index field (20 bits)",
5078 desc, what);
5079 return;
5080 }
5081
5082 sym = symbol_find_or_make ((char *)string);
5083 value = 0;
5084 st = st_Label;
5085 sc = sc_Text;
5086 indx = desc;
5087 }
5088 else
5089 {
5090 #ifndef NO_LISTING
5091 if (listing && (type == N_SO || type == N_SOL))
5092 listing_source_file (string);
5093 #endif
5094
5095 sym = symbol_find_or_make ((char *)string);
5096 sc = sc_Nil;
5097 st = st_Nil;
5098 value = 0;
5099 indx = ECOFF_MARK_STAB (type);
5100 }
5101
5102 /* Don't store the stabs symbol we are creating as the type of the
5103 ECOFF symbol. We want to compute the type of the ECOFF symbol
5104 independently. */
5105 if (sym != (symbolS *) NULL)
5106 hold = sym->ecoff_symbol;
5107
5108 (void) add_ecoff_symbol (string, st, sc, sym, value, indx);
5109
5110 if (sym != (symbolS *) NULL)
5111 sym->ecoff_symbol = hold;
5112
5113 /* Restore normal file type. */
5114 cur_file_ptr = save_file_ptr;
5115 }
5116
5117 static int line_label_cnt = 0;
5118 void
5119 ecoff_generate_asm_line_stab (lineno)
5120 int lineno;
5121 {
5122 char *ll;
5123
5124 line_label_cnt++;
5125 /* generate local label $LMnn */
5126 ll = xmalloc(10);
5127 sprintf(ll, "$LM%d", line_label_cnt);
5128 colon (ll);
5129
5130 /* generate stab for the line */
5131 generate_ecoff_stab ('n', ll, N_SLINE, 0, lineno);
5132
5133 }
5134
5135 #endif /* ECOFF_DEBUGGING */
GDB Binutils - Deliverables
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