1 /* ECOFF debugging support.
2 Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
5 good deal of it comes directly from mips-tfile.c, by Michael
8 This file is part of GAS.
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)
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.
20 You should have received a copy of the GNU General Public License
21 along with GAS; see the file COPYING. If not, write to the Free
22 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
27 /* This file is compiled conditionally for those targets which use
28 ECOFF debugging information (e.g., MIPS ECOFF, MIPS ELF, Alpha
31 #ifdef ECOFF_DEBUGGING
33 #include "coff/internal.h"
34 #include "coff/symconst.h"
36 #include "aout/stab_gnu.h"
40 /* Why isn't this in coff/sym.h? */
41 #define ST_RFDESCAPE 0xfff
43 /* This file constructs the information used by the ECOFF debugging
44 format. It just builds a large block of data.
46 We support both ECOFF style debugging and stabs debugging (the
47 stabs symbols are encapsulated in ECOFF symbols). This should let
48 us handle anything the compiler might throw at us. */
50 /* Here is a brief description of the MIPS ECOFF symbol table, by
51 Michael Meissner. The MIPS symbol table has the following pieces:
57 +-- Dense number table
65 +-- Relative file descriptors
77 The symbolic header points to each of the other tables, and also
78 contains the number of entries. It also contains a magic number
79 and MIPS compiler version number, such as 2.0.
81 The auxiliary table is a series of 32 bit integers, that are
82 referenced as needed from the local symbol table. Unlike standard
83 COFF, the aux. information does not follow the symbol that uses
84 it, but rather is a separate table. In theory, this would allow
85 the MIPS compilers to collapse duplicate aux. entries, but I've not
86 noticed this happening with the 1.31 compiler suite. The different
87 types of aux. entries are:
89 1) dnLow: Low bound on array dimension.
91 2) dnHigh: High bound on array dimension.
93 3) isym: Index to the local symbol which is the start of the
94 function for the end of function first aux. entry.
96 4) width: Width of structures and bitfields.
98 5) count: Count of ranges for variant part.
100 6) rndx: A relative index into the symbol table. The relative
101 index field has two parts: rfd which is a pointer into the
102 relative file index table or ST_RFDESCAPE which says the next
103 aux. entry is the file number, and index: which is the pointer
104 into the local symbol within a given file table. This is for
105 things like references to types defined in another file.
107 7) Type information: This is like the COFF type bits, except it
108 is 32 bits instead of 16; they still have room to add new
109 basic types; and they can handle more than 6 levels of array,
110 pointer, function, etc. Each type information field contains
111 the following structure members:
113 a) fBitfield: a bit that says this is a bitfield, and the
114 size in bits follows as the next aux. entry.
116 b) continued: a bit that says the next aux. entry is a
117 continuation of the current type information (in case
118 there are more than 6 levels of array/ptr/function).
120 c) bt: an integer containing the base type before adding
121 array, pointer, function, etc. qualifiers. The
122 current base types that I have documentation for are:
125 btAdr -- address - integer same size as ptr
127 btUChar -- unsigned character
129 btUShort -- unsigned short
131 btUInt -- unsigned int
133 btULong -- unsigned long
134 btFloat -- float (real)
135 btDouble -- Double (real)
136 btStruct -- Structure (Record)
137 btUnion -- Union (variant)
139 btTypedef -- defined via a typedef isymRef
140 btRange -- subrange of int
142 btComplex -- fortran complex
143 btDComplex -- fortran double complex
144 btIndirect -- forward or unnamed typedef
145 btFixedDec -- Fixed Decimal
146 btFloatDec -- Float Decimal
147 btString -- Varying Length Character String
148 btBit -- Aligned Bit String
150 btVoid -- Void (MIPS cc revision >= 2.00)
152 d) tq0 - tq5: type qualifier fields as needed. The
153 current type qualifier fields I have documentation for
156 tqNil -- no more qualifiers
160 tqFar -- 8086 far pointers
164 The dense number table is used in the front ends, and disappears by
165 the time the .o is created.
167 With the 1.31 compiler suite, the optimization symbols don't seem
168 to be used as far as I can tell.
170 The linker is the first entity that creates the relative file
171 descriptor table, and I believe it is used so that the individual
172 file table pointers don't have to be rewritten when the objects are
173 merged together into the program file.
175 Unlike COFF, the basic symbol & string tables are split into
176 external and local symbols/strings. The relocation information
177 only goes off of the external symbol table, and the debug
178 information only goes off of the internal symbol table. The
179 external symbols can have links to an appropriate file index and
180 symbol within the file to give it the appropriate type information.
181 Because of this, the external symbols are actually larger than the
182 internal symbols (to contain the link information), and contain the
183 local symbol structure as a member, though this member is not the
184 first member of the external symbol structure (!). I suspect this
185 split is to make strip easier to deal with.
187 Each file table has offsets for where the line numbers, local
188 strings, local symbols, and procedure table starts from within the
189 global tables, and the indexs are reset to 0 for each of those
192 The procedure table contains the binary equivalents of the .ent
193 (start of the function address), .frame (what register is the
194 virtual frame pointer, constant offset from the register to obtain
195 the VFP, and what register holds the return address), .mask/.fmask
196 (bitmask of saved registers, and where the first register is stored
197 relative to the VFP) assembler directives. It also contains the
198 low and high bounds of the line numbers if debugging is turned on.
200 The line number table is a compressed form of the normal COFF line
201 table. Each line number entry is either 1 or 3 bytes long, and
202 contains a signed delta from the previous line, and an unsigned
203 count of the number of instructions this statement takes.
205 The local symbol table contains the following fields:
207 1) iss: index to the local string table giving the name of the
210 2) value: value of the symbol (address, register number, etc.).
212 3) st: symbol type. The current symbol types are:
214 stNil -- Nuthin' special
215 stGlobal -- external symbol
217 stParam -- procedure argument
218 stLocal -- local variable
220 stProc -- External Procedure
221 stBlock -- beginning of block
222 stEnd -- end (of anything)
223 stMember -- member (of anything)
224 stTypedef -- type definition
226 stRegReloc -- register relocation
227 stForward -- forwarding address
228 stStaticProc -- Static procedure
231 4) sc: storage class. The current storage classes are:
233 scText -- text symbol
234 scData -- initialized data symbol
235 scBss -- un-initialized data symbol
236 scRegister -- value of symbol is register number
237 scAbs -- value of symbol is absolute
238 scUndefined -- who knows?
239 scCdbLocal -- variable's value is IN se->va.??
240 scBits -- this is a bit field
241 scCdbSystem -- value is IN debugger's address space
242 scRegImage -- register value saved on stack
243 scInfo -- symbol contains debugger information
244 scUserStruct -- addr in struct user for current process
245 scSData -- load time only small data
246 scSBss -- load time only small common
247 scRData -- load time only read only data
248 scVar -- Var parameter (fortranpascal)
249 scCommon -- common variable
250 scSCommon -- small common
251 scVarRegister -- Var parameter in a register
252 scVariant -- Variant record
253 scSUndefined -- small undefined(external) data
254 scInit -- .init section symbol
256 5) index: pointer to a local symbol or aux. entry.
260 For the following program:
265 printf("Hello World!\n");
269 Mips-tdump produces the following information:
274 timestamp 645311799, Wed Jun 13 17:16:39 1990
275 symbolic header offset 284
276 symbolic header size 96
280 Symbolic header, magic number = 0x7009, vstamp = 1.31:
282 Info Offset Number Bytes
283 ==== ====== ====== =====
285 Line numbers 380 4 4 [13]
287 Procedures Tables 384 1 52
288 Local Symbols 436 16 192
289 Optimization Symbols 0 0 0
290 Auxiliary Symbols 628 39 156
291 Local Strings 784 80 80
292 External Strings 864 144 144
293 File Tables 1008 2 144
295 External Symbols 1152 20 320
299 Name index = 1 Readin = No
300 Merge = No Endian = LITTLE
301 Debug level = G2 Language = C
304 Info Start Number Size Offset
305 ==== ===== ====== ==== ======
306 Local strings 0 15 15 784
307 Local symbols 0 6 72 436
308 Line numbers 0 13 13 380
309 Optimization symbols 0 0 0 0
310 Procedures 0 1 52 384
311 Auxiliary symbols 0 14 56 628
312 Relative Files 0 0 0 0
314 There are 6 local symbols, starting at 436
316 Symbol# 0: "hello2.c"
319 Storage class = Text Index = 6
320 Symbol type = File Value = 0
326 Storage class = Text Index = 12
327 Symbol type = Proc Value = 0
332 Storage class = Text Index = 4
333 Symbol type = Block Value = 8
338 Storage class = Text Index = 2
339 Symbol type = End Value = 28
344 Storage class = Text Index = 1
345 Symbol type = End Value = 52
347 Symbol# 5: "hello2.c"
350 Storage class = Text Index = 0
351 Symbol type = End Value = 0
353 There are 14 auxiliary table entries, starting at 628.
355 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
356 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
357 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0]
358 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0]
359 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
360 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0]
361 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0]
362 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0]
363 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0]
364 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0]
365 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0]
366 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0]
367 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0]
368 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
370 There are 1 procedure descriptor entries, starting at 0.
372 Procedure descriptor 0:
373 Name index = 10 Name = "main"
374 .mask 0x80000000,-4 .fmask 0x00000000,0
376 Opt. start = -1 Symbols start = 1
377 First line # = 3 Last line # = 6
378 Line Offset = 0 Address = 0x00000000
380 There are 4 bytes holding line numbers, starting at 380.
381 Line 3, delta 0, count 2
382 Line 4, delta 1, count 3
383 Line 5, delta 1, count 2
384 Line 6, delta 1, count 6
386 File #1, "/usr/include/stdio.h"
388 Name index = 1 Readin = No
389 Merge = Yes Endian = LITTLE
390 Debug level = G2 Language = C
393 Info Start Number Size Offset
394 ==== ===== ====== ==== ======
395 Local strings 15 65 65 799
396 Local symbols 6 10 120 508
397 Line numbers 0 0 0 380
398 Optimization symbols 0 0 0 0
400 Auxiliary symbols 14 25 100 684
401 Relative Files 0 0 0 0
403 There are 10 local symbols, starting at 442
405 Symbol# 0: "/usr/include/stdio.h"
408 Storage class = Text Index = 10
409 Symbol type = File Value = 0
414 Storage class = Info Index = 9
415 Symbol type = Block Value = 20
420 Storage class = Info Index = 4
421 Symbol type = Member Value = 0
426 Storage class = Info Index = 15
427 Symbol type = Member Value = 32
432 Storage class = Info Index = 16
433 Symbol type = Member Value = 64
438 Storage class = Info Index = 4
439 Symbol type = Member Value = 96
444 Storage class = Info Index = 3
445 Symbol type = Member Value = 128
450 Storage class = Info Index = 2
451 Symbol type = Member Value = 144
456 Storage class = Info Index = 1
457 Symbol type = End Value = 0
459 Symbol# 9: "/usr/include/stdio.h"
462 Storage class = Text Index = 0
463 Symbol type = End Value = 0
465 There are 25 auxiliary table entries, starting at 642.
467 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f]
468 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
469 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
470 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0]
471 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1]
472 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
473 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4]
474 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
475 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
476 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0]
477 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0]
478 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
479 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
480 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
481 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
482 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
483 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
484 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
485 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
486 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
487 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
488 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
489 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
490 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
491 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
493 There are 0 procedure descriptor entries, starting at 1.
495 There are 20 external symbols, starting at 1152
498 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 }
499 String index = 0 Ifd = 1
500 Storage class = Nil Index = 17
501 Symbol type = Global Value = 60
504 String index = 5 Ifd = 1
505 Storage class = Nil Index = 1048575
506 Symbol type = Proc Value = 0
509 String index = 11 Ifd = 1
510 Storage class = Nil Index = 1048575
511 Symbol type = Proc Value = 0
514 String index = 18 Ifd = 1
515 Storage class = Nil Index = 1048575
516 Symbol type = Proc Value = 0
519 String index = 26 Ifd = 1
520 Storage class = Nil Index = 1048575
521 Symbol type = Proc Value = 0
524 String index = 32 Ifd = 1
525 Storage class = Nil Index = 1048575
526 Symbol type = Proc Value = 0
529 String index = 40 Ifd = 1
530 Storage class = Nil Index = 1048575
531 Symbol type = Proc Value = 0
534 String index = 46 Ifd = 1
535 Storage class = Nil Index = 1048575
536 Symbol type = Proc Value = 0
539 String index = 53 Ifd = 1
540 Storage class = Nil Index = 1048575
541 Symbol type = Proc Value = 0
543 Symbol# 9: "setbuffer"
544 String index = 60 Ifd = 1
545 Storage class = Nil Index = 1048575
546 Symbol type = Proc Value = 0
548 Symbol# 10: "setlinebuf"
549 String index = 70 Ifd = 1
550 Storage class = Nil Index = 1048575
551 Symbol type = Proc Value = 0
554 String index = 81 Ifd = 1
555 Storage class = Nil Index = 1048575
556 Symbol type = Proc Value = 0
559 String index = 87 Ifd = 1
560 Storage class = Nil Index = 1048575
561 Symbol type = Proc Value = 0
563 Symbol# 13: "ctermid"
564 String index = 92 Ifd = 1
565 Storage class = Nil Index = 1048575
566 Symbol type = Proc Value = 0
568 Symbol# 14: "cuserid"
569 String index = 100 Ifd = 1
570 Storage class = Nil Index = 1048575
571 Symbol type = Proc Value = 0
573 Symbol# 15: "tempnam"
574 String index = 108 Ifd = 1
575 Storage class = Nil Index = 1048575
576 Symbol type = Proc Value = 0
579 String index = 116 Ifd = 1
580 Storage class = Nil Index = 1048575
581 Symbol type = Proc Value = 0
583 Symbol# 17: "sprintf"
584 String index = 123 Ifd = 1
585 Storage class = Nil Index = 1048575
586 Symbol type = Proc Value = 0
590 String index = 131 Ifd = 0
591 Storage class = Text Index = 1
592 Symbol type = Proc Value = 0
595 String index = 136 Ifd = 0
596 Storage class = Undefined Index = 1048575
597 Symbol type = Proc Value = 0
599 The following auxiliary table entries were unused:
603 #3 16 0x00000010 short
605 #5 32 0x00000020 long
606 #6 40 0x00000028 float
607 #7 44 0x0000002c double
608 #8 12 0x0000000c unsigned char
609 #9 20 0x00000014 unsigned short
610 #10 28 0x0000001c unsigned int
611 #11 36 0x00000024 unsigned long
612 #14 0 0x00000000 void
613 #15 24 0x00000018 int
614 #19 32 0x00000020 long
615 #20 40 0x00000028 float
616 #21 44 0x0000002c double
617 #22 12 0x0000000c unsigned char
618 #23 20 0x00000014 unsigned short
619 #24 28 0x0000001c unsigned int
620 #25 36 0x00000024 unsigned long
621 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 }
624 /* Redefinition of of storage classes as an enumeration for better
628 sc_Nil = scNil, /* no storage class */
629 sc_Text = scText, /* text symbol */
630 sc_Data = scData, /* initialized data symbol */
631 sc_Bss = scBss, /* un-initialized data symbol */
632 sc_Register = scRegister, /* value of symbol is register number */
633 sc_Abs = scAbs, /* value of symbol is absolute */
634 sc_Undefined = scUndefined, /* who knows? */
635 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */
636 sc_Bits = scBits, /* this is a bit field */
637 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */
638 sc_RegImage = scRegImage, /* register value saved on stack */
639 sc_Info = scInfo, /* symbol contains debugger information */
640 sc_UserStruct = scUserStruct, /* addr in struct user for current process */
641 sc_SData = scSData, /* load time only small data */
642 sc_SBss = scSBss, /* load time only small common */
643 sc_RData = scRData, /* load time only read only data */
644 sc_Var = scVar, /* Var parameter (fortran,pascal) */
645 sc_Common = scCommon, /* common variable */
646 sc_SCommon = scSCommon, /* small common */
647 sc_VarRegister = scVarRegister, /* Var parameter in a register */
648 sc_Variant = scVariant, /* Variant record */
649 sc_SUndefined = scSUndefined, /* small undefined(external) data */
650 sc_Init = scInit, /* .init section symbol */
651 sc_Max = scMax /* Max storage class+1 */
654 /* Redefinition of symbol type. */
657 st_Nil = stNil, /* Nuthin' special */
658 st_Global = stGlobal, /* external symbol */
659 st_Static = stStatic, /* static */
660 st_Param = stParam, /* procedure argument */
661 st_Local = stLocal, /* local variable */
662 st_Label = stLabel, /* label */
663 st_Proc = stProc, /* " " Procedure */
664 st_Block = stBlock, /* beginning of block */
665 st_End = stEnd, /* end (of anything) */
666 st_Member = stMember, /* member (of anything - struct/union/enum */
667 st_Typedef = stTypedef, /* type definition */
668 st_File = stFile, /* file name */
669 st_RegReloc = stRegReloc, /* register relocation */
670 st_Forward = stForward, /* forwarding address */
671 st_StaticProc = stStaticProc, /* load time only static procs */
672 st_Constant = stConstant, /* const */
673 st_Str = stStr, /* string */
674 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */
675 st_Expr = stExpr, /* 2+2 vs. 4 */
676 st_Type = stType, /* post-coercion SER */
677 st_Max = stMax /* max type+1 */
680 /* Redefinition of type qualifiers. */
683 tq_Nil = tqNil, /* bt is what you see */
684 tq_Ptr = tqPtr, /* pointer */
685 tq_Proc = tqProc, /* procedure */
686 tq_Array = tqArray, /* duh */
687 tq_Far = tqFar, /* longer addressing - 8086/8 land */
688 tq_Vol = tqVol, /* volatile */
689 tq_Max = tqMax /* Max type qualifier+1 */
692 /* Redefinition of basic types. */
695 bt_Nil = btNil, /* undefined */
696 bt_Adr = btAdr, /* address - integer same size as pointer */
697 bt_Char = btChar, /* character */
698 bt_UChar = btUChar, /* unsigned character */
699 bt_Short = btShort, /* short */
700 bt_UShort = btUShort, /* unsigned short */
701 bt_Int = btInt, /* int */
702 bt_UInt = btUInt, /* unsigned int */
703 bt_Long = btLong, /* long */
704 bt_ULong = btULong, /* unsigned long */
705 bt_Float = btFloat, /* float (real) */
706 bt_Double = btDouble, /* Double (real) */
707 bt_Struct = btStruct, /* Structure (Record) */
708 bt_Union = btUnion, /* Union (variant) */
709 bt_Enum = btEnum, /* Enumerated */
710 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */
711 bt_Range = btRange, /* subrange of int */
712 bt_Set = btSet, /* pascal sets */
713 bt_Complex = btComplex, /* fortran complex */
714 bt_DComplex = btDComplex, /* fortran double complex */
715 bt_Indirect = btIndirect, /* forward or unnamed typedef */
716 bt_FixedDec = btFixedDec, /* Fixed Decimal */
717 bt_FloatDec = btFloatDec, /* Float Decimal */
718 bt_String = btString, /* Varying Length Character String */
719 bt_Bit = btBit, /* Aligned Bit String */
720 bt_Picture = btPicture, /* Picture */
721 bt_Void = btVoid, /* Void */
722 bt_Max = btMax /* Max basic type+1 */
727 /* States for whether to hash type or not. */
728 typedef enum hash_state {
729 hash_no = 0, /* don't hash type */
730 hash_yes = 1, /* ok to hash type, or use previous hash */
731 hash_record = 2 /* ok to record hash, but don't use prev. */
734 /* Types of different sized allocation requests. */
736 alloc_type_none, /* dummy value */
737 alloc_type_scope, /* nested scopes linked list */
738 alloc_type_vlinks, /* glue linking pages in varray */
739 alloc_type_shash, /* string hash element */
740 alloc_type_thash, /* type hash element */
741 alloc_type_tag, /* struct/union/tag element */
742 alloc_type_forward, /* element to hold unknown tag */
743 alloc_type_thead, /* head of type hash list */
744 alloc_type_varray, /* general varray allocation */
745 alloc_type_lineno, /* line number list */
746 alloc_type_last /* last+1 element for array bounds */
749 /* Types of auxiliary type information. */
751 aux_tir, /* TIR type information */
752 aux_rndx, /* relative index into symbol table */
753 aux_dnLow, /* low dimension */
754 aux_dnHigh, /* high dimension */
755 aux_isym, /* symbol table index (end of proc) */
756 aux_iss, /* index into string space (not used) */
757 aux_width, /* width for non-default sized struc fields */
758 aux_count /* count of ranges for variant arm */
761 /* Structures to provide n-number of virtual arrays, each of which can
762 grow linearly, and which are written in the object file as
763 sequential pages. On systems with a BSD malloc, the
764 MAX_CLUSTER_PAGES should be 1 less than a power of two, since
765 malloc adds it's overhead, and rounds up to the next power of 2.
766 Pages are linked together via a linked list.
768 If PAGE_SIZE is > 4096, the string length in the shash_t structure
769 can't be represented (assuming there are strings > 4096 bytes). */
772 #define PAGE_SIZE 4096 /* size of varray pages */
775 #define PAGE_USIZE ((unsigned long) PAGE_SIZE)
778 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */
779 #define MAX_CLUSTER_PAGES 63
782 /* Linked list connecting separate page allocations. */
783 typedef struct vlinks {
784 struct vlinks *prev; /* previous set of pages */
785 struct vlinks *next; /* next set of pages */
786 union page *datum; /* start of page */
787 unsigned long start_index; /* starting index # of page */
791 /* Virtual array header. */
792 typedef struct varray {
793 vlinks_t *first; /* first page link */
794 vlinks_t *last; /* last page link */
795 unsigned long num_allocated; /* # objects allocated */
796 unsigned short object_size; /* size in bytes of each object */
797 unsigned short objects_per_page; /* # objects that can fit on a page */
798 unsigned short objects_last_page; /* # objects allocated on last page */
802 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type))
804 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE)
807 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \
808 (vlinks_t *)0, /* first */ \
809 (vlinks_t *)0, /* last */ \
810 0, /* num_allocated */ \
811 sizeof (type), /* object_size */ \
812 OBJECTS_PER_PAGE (type), /* objects_per_page */ \
813 OBJECTS_PER_PAGE (type), /* objects_last_page */ \
817 /* Master type for indexes within the symbol table. */
818 typedef unsigned long symint_t;
821 /* Linked list support for nested scopes (file, block, structure, etc.). */
822 typedef struct scope {
823 struct scope *prev; /* previous scope level */
824 struct scope *free; /* free list pointer */
825 struct localsym *lsym; /* pointer to local symbol node */
826 st_t type; /* type of the node */
830 /* For a local symbol we store a gas symbol as well as the debugging
831 information we generate. The gas symbol will be NULL if this is
832 only a debugging symbol. */
833 typedef struct localsym {
834 const char *name; /* symbol name */
835 symbolS *as_sym; /* symbol as seen by gas */
836 bfd_vma addend; /* addend to as_sym value */
837 struct efdr *file_ptr; /* file pointer */
838 struct ecoff_proc *proc_ptr; /* proc pointer */
839 struct localsym *begin_ptr; /* symbol at start of block */
840 struct ecoff_aux *index_ptr; /* index value to be filled in */
841 struct forward *forward_ref; /* forward references to this symbol */
842 long sym_index; /* final symbol index */
843 EXTR ecoff_sym; /* ECOFF debugging symbol */
847 /* For aux information we keep the type and the data. */
848 typedef struct ecoff_aux {
849 enum aux_type type; /* aux type */
850 AUXU data; /* aux data */
853 /* For a procedure we store the gas symbol as well as the PDR
854 debugging information. */
855 typedef struct ecoff_proc {
856 localsym_t *sym; /* associated symbol */
857 PDR pdr; /* ECOFF debugging info */
860 /* Number of proc_t structures allocated. */
861 static unsigned long proc_cnt;
864 /* Forward reference list for tags referenced, but not yet defined. */
865 typedef struct forward {
866 struct forward *next; /* next forward reference */
867 struct forward *free; /* free list pointer */
868 aux_t *ifd_ptr; /* pointer to store file index */
869 aux_t *index_ptr; /* pointer to store symbol index */
873 /* Linked list support for tags. The first tag in the list is always
874 the current tag for that block. */
876 struct tag *free; /* free list pointer */
877 struct shash *hash_ptr; /* pointer to the hash table head */
878 struct tag *same_name; /* tag with same name in outer scope */
879 struct tag *same_block; /* next tag defined in the same block. */
880 struct forward *forward_ref; /* list of forward references */
881 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
882 symint_t ifd; /* file # tag defined in */
883 localsym_t *sym; /* file's local symbols */
887 /* Head of a block's linked list of tags. */
888 typedef struct thead {
889 struct thead *prev; /* previous block */
890 struct thead *free; /* free list pointer */
891 struct tag *first_tag; /* first tag in block defined */
895 /* Union containing pointers to each the small structures which are freed up. */
896 typedef union small_free {
897 scope_t *f_scope; /* scope structure */
898 thead_t *f_thead; /* tag head structure */
899 tag_t *f_tag; /* tag element structure */
900 forward_t *f_forward; /* forward tag reference */
904 /* String hash table entry. */
906 typedef struct shash {
907 char *string; /* string we are hashing */
908 symint_t indx; /* index within string table */
909 EXTR *esym_ptr; /* global symbol pointer */
910 localsym_t *sym_ptr; /* local symbol pointer */
911 localsym_t *end_ptr; /* symbol pointer to end block */
912 tag_t *tag_ptr; /* tag pointer */
913 proc_t *proc_ptr; /* procedure descriptor pointer */
917 /* Type hash table support. The size of the hash table must fit
918 within a page with the other extended file descriptor information.
919 Because unique types which are hashed are fewer in number than
920 strings, we use a smaller hash value. */
925 #define THASH_SIZE 113
928 typedef struct thash {
929 struct thash *next; /* next hash value */
930 AUXU type; /* type we are hashing */
931 symint_t indx; /* index within string table */
935 /* Extended file descriptor that contains all of the support necessary
936 to add things to each file separately. */
937 typedef struct efdr {
938 FDR fdr; /* File header to be written out */
939 FDR *orig_fdr; /* original file header */
940 char *name; /* filename */
941 int fake; /* whether this is faked .file */
942 symint_t void_type; /* aux. pointer to 'void' type */
943 symint_t int_type; /* aux. pointer to 'int' type */
944 scope_t *cur_scope; /* current nested scopes */
945 symint_t file_index; /* current file number */
946 int nested_scopes; /* # nested scopes */
947 varray_t strings; /* local strings */
948 varray_t symbols; /* local symbols */
949 varray_t procs; /* procedures */
950 varray_t aux_syms; /* auxiliary symbols */
951 struct efdr *next_file; /* next file descriptor */
952 /* string/type hash tables */
953 struct hash_control *str_hash; /* string hash table */
954 thash_t *thash_head[THASH_SIZE];
957 /* Pre-initialized extended file structure. */
958 static const efdr_t init_file =
960 { /* FDR structure */
961 0, /* adr: memory address of beginning of file */
962 0, /* rss: file name (of source, if known) */
963 0, /* issBase: file's string space */
964 0, /* cbSs: number of bytes in the ss */
965 0, /* isymBase: beginning of symbols */
966 0, /* csym: count file's of symbols */
967 0, /* ilineBase: file's line symbols */
968 0, /* cline: count of file's line symbols */
969 0, /* ioptBase: file's optimization entries */
970 0, /* copt: count of file's optimization entries */
971 0, /* ipdFirst: start of procedures for this file */
972 0, /* cpd: count of procedures for this file */
973 0, /* iauxBase: file's auxiliary entries */
974 0, /* caux: count of file's auxiliary entries */
975 0, /* rfdBase: index into the file indirect table */
976 0, /* crfd: count file indirect entries */
977 langC, /* lang: language for this file */
978 0, /* fMerge: whether this file can be merged */
979 0, /* fReadin: true if read in (not just created) */
980 #ifdef TARGET_BYTES_BIG_ENDIAN
981 1, /* fBigendian: if 1, compiled on big endian machine */
983 0, /* fBigendian: if 1, compiled on big endian machine */
985 GLEVEL_2, /* glevel: level this file was compiled with */
986 0, /* reserved: reserved for future use */
987 0, /* cbLineOffset: byte offset from header for this file ln's */
988 0, /* cbLine: size of lines for this file */
991 (FDR *)0, /* orig_fdr: original file header pointer */
992 (char *)0, /* name: pointer to filename */
993 0, /* fake: whether this is a faked .file */
994 0, /* void_type: ptr to aux node for void type */
995 0, /* int_type: ptr to aux node for int type */
996 (scope_t *)0, /* cur_scope: current scope being processed */
997 0, /* file_index: current file # */
998 0, /* nested_scopes: # nested scopes */
999 INIT_VARRAY (char), /* strings: local string varray */
1000 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */
1001 INIT_VARRAY (proc_t), /* procs: procedure varray */
1002 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */
1004 (struct efdr *)0, /* next_file: next file structure */
1006 (struct hash_control *)0, /* str_hash: string hash table */
1007 { 0 }, /* thash_head: type hash table */
1011 static efdr_t *first_file; /* first file descriptor */
1012 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */
1015 /* Line number information is kept in a list until the assembly is
1017 typedef struct lineno_list {
1018 struct lineno_list *next; /* next element in list */
1019 efdr_t *file; /* file this line is in */
1020 proc_t *proc; /* procedure this line is in */
1021 fragS *frag; /* fragment this line number is in */
1022 unsigned long paddr; /* offset within fragment */
1023 long lineno; /* actual line number */
1026 static lineno_list_t *first_lineno;
1027 static lineno_list_t **last_lineno_ptr = &first_lineno;
1029 /* Sometimes there will be some .loc statements before a .ent. We
1030 keep them in this list so that we can fill in the procedure pointer
1031 after we see the .ent. */
1032 static lineno_list_t *noproc_lineno;
1034 /* Union of various things that are held in pages. */
1035 typedef union page {
1036 char byte [ PAGE_SIZE ];
1037 unsigned char ubyte [ PAGE_SIZE ];
1038 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ];
1039 FDR ofile [ PAGE_SIZE / sizeof (FDR) ];
1040 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ];
1041 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ];
1042 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ];
1043 DNR dense [ PAGE_SIZE / sizeof (DNR) ];
1044 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ];
1045 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ];
1046 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ];
1047 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ];
1048 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ];
1049 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ];
1050 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ];
1051 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ];
1055 /* Structure holding allocation information for small sized structures. */
1056 typedef struct alloc_info {
1057 char *alloc_name; /* name of this allocation type (must be first) */
1058 page_t *cur_page; /* current page being allocated from */
1059 small_free_t free_list; /* current free list if any */
1060 int unallocated; /* number of elements unallocated on page */
1061 int total_alloc; /* total number of allocations */
1062 int total_free; /* total number of frees */
1063 int total_pages; /* total number of pages allocated */
1067 /* Type information collected together. */
1068 typedef struct type_info {
1069 bt_t basic_type; /* basic type */
1070 int orig_type; /* original COFF-based type */
1071 int num_tq; /* # type qualifiers */
1072 int num_dims; /* # dimensions */
1073 int num_sizes; /* # sizes */
1074 int extra_sizes; /* # extra sizes not tied with dims */
1075 tag_t * tag_ptr; /* tag pointer */
1076 int bitfield; /* symbol is a bitfield */
1077 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/
1078 symint_t dimensions [N_TQ]; /* dimensions for each array */
1079 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of
1080 struct/union/enum + bitfield size */
1083 /* Pre-initialized type_info struct. */
1084 static const type_info_t type_info_init = {
1085 bt_Nil, /* basic type */
1086 T_NULL, /* original COFF-based type */
1087 0, /* # type qualifiers */
1088 0, /* # dimensions */
1090 0, /* sizes not tied with dims */
1091 NULL, /* ptr to tag */
1093 { /* type qualifiers */
1121 /* Global hash table for the tags table and global table for file
1124 static varray_t file_desc = INIT_VARRAY (efdr_t);
1126 static struct hash_control *tag_hash;
1128 /* Static types for int and void. Also, remember the last function's
1129 type (which is set up when we encounter the declaration for the
1130 function, and used when the end block for the function is emitted. */
1132 static type_info_t int_type_info;
1133 static type_info_t void_type_info;
1134 static type_info_t last_func_type_info;
1135 static symbolS *last_func_sym_value;
1138 /* Convert COFF basic type to ECOFF basic type. The T_NULL type
1139 really should use bt_Void, but this causes the current ecoff GDB to
1140 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS
1141 2.0) doesn't understand it, even though the compiler generates it.
1142 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler
1143 suite, but for now go with what works.
1145 It would make sense for the .type and .scl directives to use the
1146 ECOFF numbers directly, rather than using the COFF numbers and
1147 mapping them. Unfortunately, this is historically what mips-tfile
1148 expects, and changing gcc now would be a considerable pain (the
1149 native compiler generates debugging information internally, rather
1150 than via the assembler, so it will never use .type or .scl). */
1152 static const bt_t map_coff_types[] = {
1153 bt_Nil, /* T_NULL */
1155 bt_Char, /* T_CHAR */
1156 bt_Short, /* T_SHORT */
1158 bt_Long, /* T_LONG */
1159 bt_Float, /* T_FLOAT */
1160 bt_Double, /* T_DOUBLE */
1161 bt_Struct, /* T_STRUCT */
1162 bt_Union, /* T_UNION */
1163 bt_Enum, /* T_ENUM */
1164 bt_Enum, /* T_MOE */
1165 bt_UChar, /* T_UCHAR */
1166 bt_UShort, /* T_USHORT */
1167 bt_UInt, /* T_UINT */
1168 bt_ULong /* T_ULONG */
1171 /* Convert COFF storage class to ECOFF storage class. */
1172 static const sc_t map_coff_storage[] = {
1173 sc_Nil, /* 0: C_NULL */
1174 sc_Abs, /* 1: C_AUTO auto var */
1175 sc_Undefined, /* 2: C_EXT external */
1176 sc_Data, /* 3: C_STAT static */
1177 sc_Register, /* 4: C_REG register */
1178 sc_Undefined, /* 5: C_EXTDEF ??? */
1179 sc_Text, /* 6: C_LABEL label */
1180 sc_Text, /* 7: C_ULABEL user label */
1181 sc_Info, /* 8: C_MOS member of struct */
1182 sc_Abs, /* 9: C_ARG argument */
1183 sc_Info, /* 10: C_STRTAG struct tag */
1184 sc_Info, /* 11: C_MOU member of union */
1185 sc_Info, /* 12: C_UNTAG union tag */
1186 sc_Info, /* 13: C_TPDEF typedef */
1187 sc_Data, /* 14: C_USTATIC ??? */
1188 sc_Info, /* 15: C_ENTAG enum tag */
1189 sc_Info, /* 16: C_MOE member of enum */
1190 sc_Register, /* 17: C_REGPARM register parameter */
1191 sc_Bits, /* 18; C_FIELD bitfield */
1273 sc_Text, /* 100: C_BLOCK block start/end */
1274 sc_Text, /* 101: C_FCN function start/end */
1275 sc_Info, /* 102: C_EOS end of struct/union/enum */
1276 sc_Nil, /* 103: C_FILE file start */
1277 sc_Nil, /* 104: C_LINE line number */
1278 sc_Nil, /* 105: C_ALIAS combined type info */
1279 sc_Nil, /* 106: C_HIDDEN ??? */
1282 /* Convert COFF storage class to ECOFF symbol type. */
1283 static const st_t map_coff_sym_type[] = {
1284 st_Nil, /* 0: C_NULL */
1285 st_Local, /* 1: C_AUTO auto var */
1286 st_Global, /* 2: C_EXT external */
1287 st_Static, /* 3: C_STAT static */
1288 st_Local, /* 4: C_REG register */
1289 st_Global, /* 5: C_EXTDEF ??? */
1290 st_Label, /* 6: C_LABEL label */
1291 st_Label, /* 7: C_ULABEL user label */
1292 st_Member, /* 8: C_MOS member of struct */
1293 st_Param, /* 9: C_ARG argument */
1294 st_Block, /* 10: C_STRTAG struct tag */
1295 st_Member, /* 11: C_MOU member of union */
1296 st_Block, /* 12: C_UNTAG union tag */
1297 st_Typedef, /* 13: C_TPDEF typedef */
1298 st_Static, /* 14: C_USTATIC ??? */
1299 st_Block, /* 15: C_ENTAG enum tag */
1300 st_Member, /* 16: C_MOE member of enum */
1301 st_Param, /* 17: C_REGPARM register parameter */
1302 st_Member, /* 18; C_FIELD bitfield */
1384 st_Block, /* 100: C_BLOCK block start/end */
1385 st_Proc, /* 101: C_FCN function start/end */
1386 st_End, /* 102: C_EOS end of struct/union/enum */
1387 st_File, /* 103: C_FILE file start */
1388 st_Nil, /* 104: C_LINE line number */
1389 st_Nil, /* 105: C_ALIAS combined type info */
1390 st_Nil, /* 106: C_HIDDEN ??? */
1394 /* Keep track of different sized allocation requests. */
1395 static alloc_info_t alloc_counts[ (int)alloc_type_last ];
1397 /* Record whether we have seen any debugging information. */
1398 int ecoff_debugging_seen = 0;
1400 /* Various statics. */
1401 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */
1402 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */
1403 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */
1404 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */
1405 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */
1407 static int debug = 0; /* trace functions */
1409 static int stabs_seen = 0; /* != 0 if stabs have been seen */
1411 static int current_file_idx;
1412 static const char *current_stabs_filename;
1414 /* Pseudo symbol to use when putting stabs into the symbol table. */
1415 #ifndef STABS_SYMBOL
1416 #define STABS_SYMBOL "@stabs"
1419 static char stabs_symbol[] = STABS_SYMBOL;
1421 /* Prototypes for functions defined in this file. */
1423 static void add_varray_page PARAMS ((varray_t *vp));
1424 static symint_t add_string PARAMS ((varray_t *vp,
1425 struct hash_control *hash_tbl,
1427 shash_t **ret_hash));
1428 static localsym_t *add_ecoff_symbol PARAMS ((const char *str, st_t type,
1429 sc_t storage, symbolS *sym,
1430 bfd_vma addend, symint_t value,
1432 static symint_t add_aux_sym_symint PARAMS ((symint_t aux_word));
1433 static symint_t add_aux_sym_rndx PARAMS ((int file_index,
1434 symint_t sym_index));
1435 static symint_t add_aux_sym_tir PARAMS ((type_info_t *t,
1437 thash_t **hash_tbl));
1438 static tag_t *get_tag PARAMS ((const char *tag, localsym_t *sym,
1440 static void add_unknown_tag PARAMS ((tag_t *ptag));
1441 static void add_procedure PARAMS ((char *func));
1442 static void add_file PARAMS ((const char *file_name, int indx, int fake));
1444 static char *sc_to_string PARAMS ((sc_t storage_class));
1445 static char *st_to_string PARAMS ((st_t symbol_type));
1447 static void mark_stabs PARAMS ((int));
1448 static char *ecoff_add_bytes PARAMS ((char **buf, char **bufend,
1449 char *bufptr, unsigned long need));
1450 static unsigned long ecoff_padding_adjust
1451 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1452 unsigned long offset, char **bufptrptr));
1453 static unsigned long ecoff_build_lineno
1454 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1455 unsigned long offset, long *linecntptr));
1456 static unsigned long ecoff_build_symbols
1457 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1458 unsigned long offset));
1459 static unsigned long ecoff_build_procs
1460 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1461 unsigned long offset));
1462 static unsigned long ecoff_build_aux
1463 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1464 unsigned long offset));
1465 static unsigned long ecoff_build_strings PARAMS ((char **buf, char **bufend,
1466 unsigned long offset,
1468 static unsigned long ecoff_build_ss
1469 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1470 unsigned long offset));
1471 static unsigned long ecoff_build_fdr
1472 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1473 unsigned long offset));
1474 static void ecoff_setup_ext PARAMS ((void));
1475 static page_t *allocate_cluster PARAMS ((unsigned long npages));
1476 static page_t *allocate_page PARAMS ((void));
1477 static scope_t *allocate_scope PARAMS ((void));
1478 static void free_scope PARAMS ((scope_t *ptr));
1479 static vlinks_t *allocate_vlinks PARAMS ((void));
1480 static shash_t *allocate_shash PARAMS ((void));
1481 static thash_t *allocate_thash PARAMS ((void));
1482 static tag_t *allocate_tag PARAMS ((void));
1483 static void free_tag PARAMS ((tag_t *ptr));
1484 static forward_t *allocate_forward PARAMS ((void));
1485 static thead_t *allocate_thead PARAMS ((void));
1486 static void free_thead PARAMS ((thead_t *ptr));
1487 static lineno_list_t *allocate_lineno_list PARAMS ((void));
1488 static void generate_ecoff_stab PARAMS ((int, const char *, int, int, int));
1490 /* This function should be called when the assembler starts up. */
1493 ecoff_read_begin_hook ()
1495 tag_hash = hash_new ();
1496 top_tag_head = allocate_thead ();
1497 top_tag_head->first_tag = (tag_t *) NULL;
1498 top_tag_head->free = (thead_t *) NULL;
1499 top_tag_head->prev = cur_tag_head;
1500 cur_tag_head = top_tag_head;
1503 /* This function should be called when a symbol is created. */
1506 ecoff_symbol_new_hook (symbolP)
1509 /* Make sure that we have a file pointer, but only if we have seen a
1510 file. If we haven't seen a file, then this is a probably special
1511 symbol created by md_begin which may required special handling at
1512 some point. Creating a dummy file with a dummy name is certainly
1514 if (cur_file_ptr == (efdr_t *) NULL
1515 && seen_at_least_1_file ())
1516 add_file ((const char *) NULL, 0, 1);
1517 symbolP->ecoff_file = cur_file_ptr;
1518 symbolP->ecoff_symbol = NULL;
1519 symbolP->ecoff_extern_size = 0;
1522 /* Add a page to a varray object. */
1525 add_varray_page (vp)
1526 varray_t *vp; /* varray to add page to */
1528 vlinks_t *new_links = allocate_vlinks ();
1531 if (vp->object_size > 1)
1532 new_links->datum = (page_t *) xcalloc (1, vp->object_size);
1535 new_links->datum = allocate_page ();
1537 alloc_counts[(int)alloc_type_varray].total_alloc++;
1538 alloc_counts[(int)alloc_type_varray].total_pages++;
1540 new_links->start_index = vp->num_allocated;
1541 vp->objects_last_page = 0;
1543 if (vp->first == (vlinks_t *) NULL) /* first allocation? */
1544 vp->first = vp->last = new_links;
1546 { /* 2nd or greater allocation */
1547 new_links->prev = vp->last;
1548 vp->last->next = new_links;
1549 vp->last = new_links;
1553 /* Add a string (and null pad) to one of the string tables. */
1556 add_string (vp, hash_tbl, str, ret_hash)
1557 varray_t *vp; /* string obstack */
1558 struct hash_control *hash_tbl; /* ptr to hash table */
1559 const char *str; /* string */
1560 shash_t **ret_hash; /* return hash pointer */
1562 register unsigned long len = strlen (str);
1563 register shash_t *hash_ptr;
1565 if (len >= PAGE_USIZE)
1566 as_fatal ("String too big (%lu bytes)", len);
1568 hash_ptr = (shash_t *) hash_find (hash_tbl, str);
1569 if (hash_ptr == (shash_t *) NULL)
1571 register const char *err;
1573 if (vp->objects_last_page + len >= PAGE_USIZE)
1576 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE;
1577 add_varray_page (vp);
1580 hash_ptr = allocate_shash ();
1581 hash_ptr->indx = vp->num_allocated;
1583 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page];
1585 vp->objects_last_page += len + 1;
1586 vp->num_allocated += len + 1;
1588 strcpy (hash_ptr->string, str);
1590 err = hash_insert (hash_tbl, str, (char *) hash_ptr);
1592 as_fatal ("Inserting \"%s\" into string hash table: %s",
1596 if (ret_hash != (shash_t **) NULL)
1597 *ret_hash = hash_ptr;
1599 return hash_ptr->indx;
1602 /* Add debugging information for a symbol. */
1605 add_ecoff_symbol (str, type, storage, sym_value, addend, value, indx)
1606 const char *str; /* symbol name */
1607 st_t type; /* symbol type */
1608 sc_t storage; /* storage class */
1609 symbolS *sym_value; /* associated symbol. */
1610 bfd_vma addend; /* addend to sym_value. */
1611 symint_t value; /* value of symbol */
1612 symint_t indx; /* index to local/aux. syms */
1615 register scope_t *pscope;
1616 register thead_t *ptag_head;
1617 register tag_t *ptag;
1618 register tag_t *ptag_next;
1619 register varray_t *vp;
1620 register int scope_delta = 0;
1621 shash_t *hash_ptr = (shash_t *) NULL;
1623 if (cur_file_ptr == (efdr_t *) NULL)
1624 as_fatal ("no current file pointer");
1626 vp = &cur_file_ptr->symbols;
1628 if (vp->objects_last_page == vp->objects_per_page)
1629 add_varray_page (vp);
1631 psym = &vp->last->datum->sym[ vp->objects_last_page++ ];
1633 if (str == (const char *) NULL && sym_value != (symbolS *) NULL)
1634 psym->name = S_GET_NAME (sym_value);
1637 psym->as_sym = sym_value;
1638 if (sym_value != (symbolS *) NULL)
1639 sym_value->ecoff_symbol = psym;
1640 psym->addend = addend;
1641 psym->file_ptr = cur_file_ptr;
1642 psym->proc_ptr = cur_proc_ptr;
1643 psym->begin_ptr = (localsym_t *) NULL;
1644 psym->index_ptr = (aux_t *) NULL;
1645 psym->forward_ref = (forward_t *) NULL;
1646 psym->sym_index = -1;
1647 memset (&psym->ecoff_sym, 0, sizeof (EXTR));
1648 psym->ecoff_sym.asym.value = value;
1649 psym->ecoff_sym.asym.st = (unsigned) type;
1650 psym->ecoff_sym.asym.sc = (unsigned) storage;
1651 psym->ecoff_sym.asym.index = indx;
1653 /* If there is an associated symbol, we wait until the end of the
1654 assembly before deciding where to put the name (it may be just an
1655 external symbol). Otherwise, this is just a debugging symbol and
1656 the name should go with the current file. */
1657 if (sym_value == (symbolS *) NULL)
1658 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL)
1660 : add_string (&cur_file_ptr->strings,
1661 cur_file_ptr->str_hash,
1665 ++vp->num_allocated;
1667 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym))
1670 /* Save the symbol within the hash table if this is a static
1671 item, and it has a name. */
1672 if (hash_ptr != (shash_t *) NULL
1673 && (type == st_Global || type == st_Static || type == st_Label
1674 || type == st_Proc || type == st_StaticProc))
1675 hash_ptr->sym_ptr = psym;
1677 /* push or pop a scope if appropriate. */
1683 case st_File: /* beginning of file */
1684 case st_Proc: /* procedure */
1685 case st_StaticProc: /* static procedure */
1686 case st_Block: /* begin scope */
1687 pscope = allocate_scope ();
1688 pscope->prev = cur_file_ptr->cur_scope;
1689 pscope->lsym = psym;
1690 pscope->type = type;
1691 cur_file_ptr->cur_scope = pscope;
1693 if (type != st_File)
1696 /* For every block type except file, struct, union, or
1697 enumeration blocks, push a level on the tag stack. We omit
1698 file types, so that tags can span file boundaries. */
1699 if (type != st_File && storage != sc_Info)
1701 ptag_head = allocate_thead ();
1702 ptag_head->first_tag = 0;
1703 ptag_head->prev = cur_tag_head;
1704 cur_tag_head = ptag_head;
1709 pscope = cur_file_ptr->cur_scope;
1710 if (pscope == (scope_t *) NULL)
1711 as_fatal ("too many st_End's");
1714 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st;
1716 psym->begin_ptr = pscope->lsym;
1718 if (begin_type != st_File)
1721 /* Except for file, structure, union, or enumeration end
1722 blocks remove all tags created within this scope. */
1723 if (begin_type != st_File && storage != sc_Info)
1725 ptag_head = cur_tag_head;
1726 cur_tag_head = ptag_head->prev;
1728 for (ptag = ptag_head->first_tag;
1729 ptag != (tag_t *) NULL;
1732 if (ptag->forward_ref != (forward_t *) NULL)
1733 add_unknown_tag (ptag);
1735 ptag_next = ptag->same_block;
1736 ptag->hash_ptr->tag_ptr = ptag->same_name;
1740 free_thead (ptag_head);
1743 cur_file_ptr->cur_scope = pscope->prev;
1745 /* block begin gets next sym #. This is set when we know
1746 the symbol index value. */
1748 /* Functions push two or more aux words as follows:
1749 1st word: index+1 of the end symbol (filled in later).
1750 2nd word: type of the function (plus any aux words needed).
1751 Also, tie the external pointer back to the function begin symbol. */
1752 if (begin_type != st_File && begin_type != st_Block)
1755 varray_t *svp = &cur_file_ptr->aux_syms;
1757 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0);
1758 pscope->lsym->index_ptr =
1759 &svp->last->datum->aux[svp->objects_last_page - 1];
1760 ty = add_aux_sym_tir (&last_func_type_info,
1762 &cur_file_ptr->thash_head[0]);
1764 /* This seems to be unnecessary. I'm not even sure what it is
1765 * intended to do. It's from mips-tfile.
1766 * if (last_func_sym_value != (symbolS *) NULL)
1768 * last_func_sym_value->ifd = cur_file_ptr->file_index;
1769 * last_func_sym_value->index = ty;
1774 free_scope (pscope);
1778 cur_file_ptr->nested_scopes += scope_delta;
1781 if (debug && type != st_File
1782 && (debug > 2 || type == st_Block || type == st_End
1783 || type == st_Proc || type == st_StaticProc))
1785 char *sc_str = sc_to_string (storage);
1786 char *st_str = st_to_string (type);
1787 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0);
1790 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s",
1791 value, depth, sc_str);
1793 if (str_start && str_end_p1 - str_start > 0)
1794 fprintf (stderr, " st= %-11s name= %.*s\n", st_str, str_end_p1 - str_start, str_start);
1797 unsigned long len = strlen (st_str);
1798 fprintf (stderr, " st= %.*s\n", len-1, st_str);
1806 /* Add an auxiliary symbol (passing a symint). This is actually used
1807 for integral aux types, not just symints. */
1810 add_aux_sym_symint (aux_word)
1811 symint_t aux_word; /* auxiliary information word */
1813 register varray_t *vp;
1814 register aux_t *aux_ptr;
1816 if (cur_file_ptr == (efdr_t *) NULL)
1817 as_fatal ("no current file pointer");
1819 vp = &cur_file_ptr->aux_syms;
1821 if (vp->objects_last_page == vp->objects_per_page)
1822 add_varray_page (vp);
1824 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1825 aux_ptr->type = aux_isym;
1826 aux_ptr->data.isym = aux_word;
1828 return vp->num_allocated++;
1832 /* Add an auxiliary symbol (passing a file/symbol index combo). */
1835 add_aux_sym_rndx (file_index, sym_index)
1839 register varray_t *vp;
1840 register aux_t *aux_ptr;
1842 if (cur_file_ptr == (efdr_t *) NULL)
1843 as_fatal ("no current file pointer");
1845 vp = &cur_file_ptr->aux_syms;
1847 if (vp->objects_last_page == vp->objects_per_page)
1848 add_varray_page (vp);
1850 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1851 aux_ptr->type = aux_rndx;
1852 aux_ptr->data.rndx.rfd = file_index;
1853 aux_ptr->data.rndx.index = sym_index;
1855 return vp->num_allocated++;
1858 /* Add an auxiliary symbol (passing the basic type and possibly
1859 type qualifiers). */
1862 add_aux_sym_tir (t, state, hash_tbl)
1863 type_info_t *t; /* current type information */
1864 hash_state_t state; /* whether to hash type or not */
1865 thash_t **hash_tbl; /* pointer to hash table to use */
1867 register varray_t *vp;
1868 register aux_t *aux_ptr;
1869 static AUXU init_aux;
1874 if (cur_file_ptr == (efdr_t *) NULL)
1875 as_fatal ("no current file pointer");
1877 vp = &cur_file_ptr->aux_syms;
1880 aux.ti.bt = (int) t->basic_type;
1881 aux.ti.continued = 0;
1882 aux.ti.fBitfield = t->bitfield;
1884 aux.ti.tq0 = (int) t->type_qualifiers[0];
1885 aux.ti.tq1 = (int) t->type_qualifiers[1];
1886 aux.ti.tq2 = (int) t->type_qualifiers[2];
1887 aux.ti.tq3 = (int) t->type_qualifiers[3];
1888 aux.ti.tq4 = (int) t->type_qualifiers[4];
1889 aux.ti.tq5 = (int) t->type_qualifiers[5];
1892 /* For anything that adds additional information, we must not hash,
1893 so check here, and reset our state. */
1895 if (state != hash_no
1896 && (t->type_qualifiers[0] == tq_Array
1897 || t->type_qualifiers[1] == tq_Array
1898 || t->type_qualifiers[2] == tq_Array
1899 || t->type_qualifiers[3] == tq_Array
1900 || t->type_qualifiers[4] == tq_Array
1901 || t->type_qualifiers[5] == tq_Array
1902 || t->basic_type == bt_Struct
1903 || t->basic_type == bt_Union
1904 || t->basic_type == bt_Enum
1906 || t->num_dims > 0))
1909 /* See if we can hash this type, and save some space, but some types
1910 can't be hashed (because they contain arrays or continuations),
1911 and others can be put into the hash list, but cannot use existing
1912 types because other aux entries precede this one. */
1914 if (state != hash_no)
1916 register thash_t *hash_ptr;
1917 register symint_t hi;
1919 hi = aux.isym & ((1 << HASHBITS) - 1);
1922 for (hash_ptr = hash_tbl[hi];
1923 hash_ptr != (thash_t *)0;
1924 hash_ptr = hash_ptr->next)
1926 if (aux.isym == hash_ptr->type.isym)
1930 if (hash_ptr != (thash_t *) NULL && state == hash_yes)
1931 return hash_ptr->indx;
1933 if (hash_ptr == (thash_t *) NULL)
1935 hash_ptr = allocate_thash ();
1936 hash_ptr->next = hash_tbl[hi];
1937 hash_ptr->type = aux;
1938 hash_ptr->indx = vp->num_allocated;
1939 hash_tbl[hi] = hash_ptr;
1943 /* Everything is set up, add the aux symbol. */
1944 if (vp->objects_last_page == vp->objects_per_page)
1945 add_varray_page (vp);
1947 aux_ptr = &vp->last->datum->aux[ vp->objects_last_page++ ];
1948 aux_ptr->type = aux_tir;
1949 aux_ptr->data = aux;
1951 ret = vp->num_allocated++;
1953 /* Add bitfield length if it exists.
1955 NOTE: Mips documentation claims bitfield goes at the end of the
1956 AUX record, but the DECstation compiler emits it here.
1957 (This would only make a difference for enum bitfields.)
1959 Also note: We use the last size given since gcc may emit 2
1960 for an enum bitfield. */
1963 (void) add_aux_sym_symint ((symint_t)t->sizes[t->num_sizes-1]);
1966 /* Add tag information if needed. Structure, union, and enum
1967 references add 2 aux symbols: a [file index, symbol index]
1968 pointer to the structure type, and the current file index. */
1970 if (t->basic_type == bt_Struct
1971 || t->basic_type == bt_Union
1972 || t->basic_type == bt_Enum)
1974 register symint_t file_index = t->tag_ptr->ifd;
1975 register localsym_t *sym = t->tag_ptr->sym;
1976 register forward_t *forward_ref = allocate_forward ();
1978 if (sym != (localsym_t *) NULL)
1980 forward_ref->next = sym->forward_ref;
1981 sym->forward_ref = forward_ref;
1985 forward_ref->next = t->tag_ptr->forward_ref;
1986 t->tag_ptr->forward_ref = forward_ref;
1989 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil);
1990 forward_ref->index_ptr
1991 = &vp->last->datum->aux[ vp->objects_last_page - 1];
1993 (void) add_aux_sym_symint (file_index);
1994 forward_ref->ifd_ptr
1995 = &vp->last->datum->aux[ vp->objects_last_page - 1];
1998 /* Add information about array bounds if they exist. */
1999 for (i = 0; i < t->num_dims; i++)
2001 (void) add_aux_sym_rndx (ST_RFDESCAPE,
2002 cur_file_ptr->int_type);
2004 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/
2005 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */
2006 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/
2007 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */
2009 : (t->sizes[i] * 8) / t->dimensions[i]);
2012 /* NOTE: Mips documentation claims that the bitfield width goes here.
2013 But it needs to be emitted earlier. */
2018 /* Add a tag to the tag table (unless it already exists). */
2021 get_tag (tag, sym, basic_type)
2022 const char *tag; /* tag name */
2023 localsym_t *sym; /* tag start block */
2024 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
2030 if (cur_file_ptr == (efdr_t *) NULL)
2031 as_fatal ("no current file pointer");
2033 hash_ptr = (shash_t *) hash_find (tag_hash, tag);
2035 if (hash_ptr != (shash_t *) NULL
2036 && hash_ptr->tag_ptr != (tag_t *) NULL)
2038 tag_ptr = hash_ptr->tag_ptr;
2039 if (sym != (localsym_t *) NULL)
2041 tag_ptr->basic_type = basic_type;
2042 tag_ptr->ifd = cur_file_ptr->file_index;
2048 if (hash_ptr == (shash_t *) NULL)
2052 perm = xmalloc ((unsigned long) (strlen (tag) + 1));
2054 hash_ptr = allocate_shash ();
2055 err = hash_insert (tag_hash, perm, (char *) hash_ptr);
2057 as_fatal ("Inserting \"%s\" into tag hash table: %s",
2059 hash_ptr->string = perm;
2062 tag_ptr = allocate_tag ();
2063 tag_ptr->forward_ref = (forward_t *) NULL;
2064 tag_ptr->hash_ptr = hash_ptr;
2065 tag_ptr->same_name = hash_ptr->tag_ptr;
2066 tag_ptr->basic_type = basic_type;
2068 tag_ptr->ifd = ((sym == (localsym_t *) NULL)
2070 : cur_file_ptr->file_index);
2071 tag_ptr->same_block = cur_tag_head->first_tag;
2073 cur_tag_head->first_tag = tag_ptr;
2074 hash_ptr->tag_ptr = tag_ptr;
2079 /* Add an unknown {struct, union, enum} tag. */
2082 add_unknown_tag (ptag)
2083 tag_t *ptag; /* pointer to tag information */
2085 shash_t *hash_ptr = ptag->hash_ptr;
2086 char *name = hash_ptr->string;
2093 char *agg_type = "{unknown aggregate type}";
2094 switch (ptag->basic_type)
2096 case bt_Struct: agg_type = "struct"; break;
2097 case bt_Union: agg_type = "union"; break;
2098 case bt_Enum: agg_type = "enum"; break;
2102 fprintf (stderr, "unknown %s %.*s found\n", agg_type,
2103 hash_ptr->len, name_start);
2107 sym = add_ecoff_symbol (name,
2115 (void) add_ecoff_symbol (name,
2123 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next)
2125 *pf = ptag->forward_ref;
2128 /* Add a procedure to the current file's list of procedures, and record
2129 this is the current procedure. */
2132 add_procedure (func)
2133 char *func; /* func name */
2135 register varray_t *vp;
2136 register proc_t *new_proc_ptr;
2141 fputc ('\n', stderr);
2144 if (cur_file_ptr == (efdr_t *) NULL)
2145 as_fatal ("no current file pointer");
2147 vp = &cur_file_ptr->procs;
2149 if (vp->objects_last_page == vp->objects_per_page)
2150 add_varray_page (vp);
2152 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++];
2154 if (first_proc_ptr == (proc_t *) NULL)
2155 first_proc_ptr = new_proc_ptr;
2157 vp->num_allocated++;
2159 new_proc_ptr->pdr.isym = -1;
2160 new_proc_ptr->pdr.iline = -1;
2161 new_proc_ptr->pdr.lnLow = -1;
2162 new_proc_ptr->pdr.lnHigh = -1;
2164 /* Set the BSF_FUNCTION flag for the symbol. */
2165 sym = symbol_find_or_make (func);
2166 sym->bsym->flags |= BSF_FUNCTION;
2168 /* Push the start of the function. */
2169 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text,
2170 sym, (bfd_vma) 0, (symint_t) 0,
2175 /* Fill in the linenos preceding the .ent, if any. */
2176 if (noproc_lineno != (lineno_list_t *) NULL)
2180 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next)
2181 l->proc = new_proc_ptr;
2182 *last_lineno_ptr = noproc_lineno;
2183 while (*last_lineno_ptr != NULL)
2184 last_lineno_ptr = &(*last_lineno_ptr)->next;
2185 noproc_lineno = (lineno_list_t *) NULL;
2189 /* Add a new filename, and set up all of the file relative
2190 virtual arrays (strings, symbols, aux syms, etc.). Record
2191 where the current file structure lives. */
2194 add_file (file_name, indx, fake)
2195 const char *file_name; /* file name */
2199 register int first_ch;
2200 register efdr_t *fil_ptr;
2204 fprintf (stderr, "\tfile\t%.*s\n", len, file_start);
2207 /* If the file name is NULL, then no .file symbol appeared, and we
2208 want to use the actual file name. */
2209 if (file_name == (const char *) NULL)
2213 if (first_file != (efdr_t *) NULL)
2214 as_fatal ("fake .file after real one");
2215 as_where (&file, (unsigned int *) NULL);
2216 file_name = (const char *) file;
2218 if (! symbol_table_frozen)
2219 generate_asm_lineno = 1;
2222 generate_asm_lineno = 0;
2226 listing_source_file (file_name);
2229 current_stabs_filename = file_name;
2231 /* If we're creating stabs, then we don't actually make a new FDR.
2232 Instead, we just create a stabs symbol. */
2235 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2236 symbol_new ("L0\001", now_seg,
2237 (valueT) frag_now_fix (),
2239 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SOL));
2243 first_ch = *file_name;
2245 /* ??? This is ifdefed out, because it results in incorrect line number
2246 debugging info when multiple .file pseudo-ops are merged into one file
2247 descriptor. See for instance ecoff_build_lineno, which will
2248 end up setting all file->fdr.* fields multiple times, resulting in
2249 incorrect debug info. In order to make this work right, all line number
2250 and symbol info for the same source file has to be adjacent in the object
2251 file, so that a single file descriptor can be used to point to them.
2252 This would require maintaining file specific lists of line numbers and
2253 symbols for each file, so that they can be merged together (or output
2254 together) when two .file pseudo-ops are merged into one file
2258 /* See if the file has already been created. */
2259 for (fil_ptr = first_file;
2260 fil_ptr != (efdr_t *) NULL;
2261 fil_ptr = fil_ptr->next_file)
2263 if (first_ch == fil_ptr->name[0]
2264 && strcmp (file_name, fil_ptr->name) == 0)
2266 cur_file_ptr = fil_ptr;
2268 cur_file_ptr->fake = 0;
2273 fil_ptr = (efdr_t *) NULL;
2276 /* If this is a new file, create it. */
2277 if (fil_ptr == (efdr_t *) NULL)
2279 if (file_desc.objects_last_page == file_desc.objects_per_page)
2280 add_varray_page (&file_desc);
2282 fil_ptr = cur_file_ptr =
2283 &file_desc.last->datum->file[file_desc.objects_last_page++];
2284 *fil_ptr = init_file;
2286 fil_ptr->file_index = current_file_idx++;
2287 ++file_desc.num_allocated;
2289 fil_ptr->fake = fake;
2291 /* Allocate the string hash table. */
2292 fil_ptr->str_hash = hash_new ();
2294 /* Make sure 0 byte in string table is null */
2295 add_string (&fil_ptr->strings,
2300 if (strlen (file_name) > PAGE_USIZE - 2)
2301 as_fatal ("Filename goes over one page boundary.");
2303 /* Push the start of the filename. We assume that the filename
2304 will be stored at string offset 1. */
2305 (void) add_ecoff_symbol (file_name, st_File, sc_Text,
2306 (symbolS *) NULL, (bfd_vma) 0,
2307 (symint_t) 0, (symint_t) 0);
2308 fil_ptr->fdr.rss = 1;
2309 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1];
2311 /* Update the linked list of file descriptors. */
2312 *last_file_ptr = fil_ptr;
2313 last_file_ptr = &fil_ptr->next_file;
2315 /* Add void & int types to the file (void should be first to catch
2316 errant 0's within the index fields). */
2317 fil_ptr->void_type = add_aux_sym_tir (&void_type_info,
2319 &cur_file_ptr->thash_head[0]);
2321 fil_ptr->int_type = add_aux_sym_tir (&int_type_info,
2323 &cur_file_ptr->thash_head[0]);
2324 /* gas used to have a bug that if the file does not have any
2325 symbol, it either will abort or will not build the file,
2326 the following is to get around that problem. ---kung*/
2328 if (generate_asm_lineno)
2331 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2332 symbol_new ("L0\001", now_seg,
2333 (valueT) frag_now_fix (),
2335 (bfd_vma) 0, 0, ECOFF_MARK_STAB (N_SO));
2336 (void) add_ecoff_symbol ("void:t1=1", st_Nil, sc_Nil,
2337 (symbolS *) NULL, (bfd_vma) 0, 0,
2338 ECOFF_MARK_STAB (N_LSYM));
2346 /* Convert storage class to string. */
2349 sc_to_string(storage_class)
2352 switch(storage_class)
2354 case sc_Nil: return "Nil,";
2355 case sc_Text: return "Text,";
2356 case sc_Data: return "Data,";
2357 case sc_Bss: return "Bss,";
2358 case sc_Register: return "Register,";
2359 case sc_Abs: return "Abs,";
2360 case sc_Undefined: return "Undefined,";
2361 case sc_CdbLocal: return "CdbLocal,";
2362 case sc_Bits: return "Bits,";
2363 case sc_CdbSystem: return "CdbSystem,";
2364 case sc_RegImage: return "RegImage,";
2365 case sc_Info: return "Info,";
2366 case sc_UserStruct: return "UserStruct,";
2367 case sc_SData: return "SData,";
2368 case sc_SBss: return "SBss,";
2369 case sc_RData: return "RData,";
2370 case sc_Var: return "Var,";
2371 case sc_Common: return "Common,";
2372 case sc_SCommon: return "SCommon,";
2373 case sc_VarRegister: return "VarRegister,";
2374 case sc_Variant: return "Variant,";
2375 case sc_SUndefined: return "SUndefined,";
2376 case sc_Init: return "Init,";
2377 case sc_Max: return "Max,";
2387 /* Convert symbol type to string. */
2390 st_to_string(symbol_type)
2395 case st_Nil: return "Nil,";
2396 case st_Global: return "Global,";
2397 case st_Static: return "Static,";
2398 case st_Param: return "Param,";
2399 case st_Local: return "Local,";
2400 case st_Label: return "Label,";
2401 case st_Proc: return "Proc,";
2402 case st_Block: return "Block,";
2403 case st_End: return "End,";
2404 case st_Member: return "Member,";
2405 case st_Typedef: return "Typedef,";
2406 case st_File: return "File,";
2407 case st_RegReloc: return "RegReloc,";
2408 case st_Forward: return "Forward,";
2409 case st_StaticProc: return "StaticProc,";
2410 case st_Constant: return "Constant,";
2411 case st_Str: return "String,";
2412 case st_Number: return "Number,";
2413 case st_Expr: return "Expr,";
2414 case st_Type: return "Type,";
2415 case st_Max: return "Max,";
2423 /* Parse .begin directives which have a label as the first argument
2424 which gives the location of the start of the block. */
2427 ecoff_directive_begin (ignore)
2433 if (cur_file_ptr == (efdr_t *) NULL)
2435 as_warn (".begin directive without a preceding .file directive");
2436 demand_empty_rest_of_line ();
2440 if (cur_proc_ptr == (proc_t *) NULL)
2442 as_warn (".begin directive without a preceding .ent directive");
2443 demand_empty_rest_of_line ();
2447 name = input_line_pointer;
2448 name_end = get_symbol_end ();
2450 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text,
2451 symbol_find_or_make (name),
2452 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2454 *input_line_pointer = name_end;
2456 /* The line number follows, but we don't use it. */
2457 (void) get_absolute_expression ();
2458 demand_empty_rest_of_line ();
2461 /* Parse .bend directives which have a label as the first argument
2462 which gives the location of the end of the block. */
2465 ecoff_directive_bend (ignore)
2472 if (cur_file_ptr == (efdr_t *) NULL)
2474 as_warn (".bend directive without a preceding .file directive");
2475 demand_empty_rest_of_line ();
2479 if (cur_proc_ptr == (proc_t *) NULL)
2481 as_warn (".bend directive without a preceding .ent directive");
2482 demand_empty_rest_of_line ();
2486 name = input_line_pointer;
2487 name_end = get_symbol_end ();
2489 /* The value is the distance between the .bend directive and the
2490 corresponding symbol. We fill in the offset when we write out
2492 endsym = symbol_find (name);
2493 if (endsym == (symbolS *) NULL)
2494 as_warn (".bend directive names unknown symbol");
2496 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym,
2497 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
2499 *input_line_pointer = name_end;
2501 /* The line number follows, but we don't use it. */
2502 (void) get_absolute_expression ();
2503 demand_empty_rest_of_line ();
2506 /* COFF debugging information is provided as a series of directives
2507 (.def, .scl, etc.). We build up information as we read the
2508 directives in the following static variables, and file it away when
2509 we reach the .endef directive. */
2510 static char *coff_sym_name;
2511 static type_info_t coff_type;
2512 static sc_t coff_storage_class;
2513 static st_t coff_symbol_typ;
2514 static int coff_is_function;
2515 static char *coff_tag;
2516 static valueT coff_value;
2517 static symbolS *coff_sym_value;
2518 static bfd_vma coff_sym_addend;
2519 static int coff_inside_enumeration;
2521 /* Handle a .def directive: start defining a symbol. */
2524 ecoff_directive_def (ignore)
2530 ecoff_debugging_seen = 1;
2534 name = input_line_pointer;
2535 name_end = get_symbol_end ();
2537 if (coff_sym_name != (char *) NULL)
2538 as_warn (".def pseudo-op used inside of .def/.endef; ignored");
2539 else if (*name == '\0')
2540 as_warn ("Empty symbol name in .def; ignored");
2543 if (coff_sym_name != (char *) NULL)
2544 free (coff_sym_name);
2545 if (coff_tag != (char *) NULL)
2547 coff_sym_name = (char *) xmalloc ((unsigned long) (strlen (name) + 1));
2548 strcpy (coff_sym_name, name);
2549 coff_type = type_info_init;
2550 coff_storage_class = sc_Nil;
2551 coff_symbol_typ = st_Nil;
2552 coff_is_function = 0;
2553 coff_tag = (char *) NULL;
2555 coff_sym_value = (symbolS *) NULL;
2556 coff_sym_addend = 0;
2559 *input_line_pointer = name_end;
2561 demand_empty_rest_of_line ();
2564 /* Handle a .dim directive, used to give dimensions for an array. The
2565 arguments are comma separated numbers. mips-tfile assumes that
2566 there will not be more than 6 dimensions, and gdb won't read any
2567 more than that anyhow, so I will also make that assumption. */
2570 ecoff_directive_dim (ignore)
2576 if (coff_sym_name == (char *) NULL)
2578 as_warn (".dim pseudo-op used outside of .def/.endef; ignored");
2579 demand_empty_rest_of_line ();
2583 for (i = 0; i < N_TQ; i++)
2586 dimens[i] = get_absolute_expression ();
2587 if (*input_line_pointer == ',')
2588 ++input_line_pointer;
2591 if (*input_line_pointer != '\n'
2592 && *input_line_pointer != ';')
2593 as_warn ("Badly formed .dim directive");
2601 /* The dimensions are stored away in reverse order. */
2604 if (coff_type.num_dims >= N_TQ)
2606 as_warn ("Too many .dim entries");
2609 coff_type.dimensions[coff_type.num_dims] = dimens[i];
2610 ++coff_type.num_dims;
2613 demand_empty_rest_of_line ();
2616 /* Handle a .scl directive, which sets the COFF storage class of the
2620 ecoff_directive_scl (ignore)
2625 if (coff_sym_name == (char *) NULL)
2627 as_warn (".scl pseudo-op used outside of .def/.endef; ignored");
2628 demand_empty_rest_of_line ();
2632 val = get_absolute_expression ();
2634 coff_symbol_typ = map_coff_sym_type[val];
2635 coff_storage_class = map_coff_storage[val];
2637 demand_empty_rest_of_line ();
2640 /* Handle a .size directive. For some reason mips-tfile.c thinks that
2641 .size can have multiple arguments. We humor it, although gcc will
2642 never generate more than one argument. */
2645 ecoff_directive_size (ignore)
2651 if (coff_sym_name == (char *) NULL)
2653 as_warn (".size pseudo-op used outside of .def/.endef; ignored");
2654 demand_empty_rest_of_line ();
2658 for (i = 0; i < N_TQ; i++)
2661 sizes[i] = get_absolute_expression ();
2662 if (*input_line_pointer == ',')
2663 ++input_line_pointer;
2666 if (*input_line_pointer != '\n'
2667 && *input_line_pointer != ';')
2668 as_warn ("Badly formed .size directive");
2676 /* The sizes are stored away in reverse order. */
2679 if (coff_type.num_sizes >= N_TQ)
2681 as_warn ("Too many .size entries");
2684 coff_type.sizes[coff_type.num_sizes] = sizes[i];
2685 ++coff_type.num_sizes;
2688 demand_empty_rest_of_line ();
2691 /* Handle the .type directive, which gives the COFF type of the
2695 ecoff_directive_type (ignore)
2702 if (coff_sym_name == (char *) NULL)
2704 as_warn (".type pseudo-op used outside of .def/.endef; ignored");
2705 demand_empty_rest_of_line ();
2709 val = get_absolute_expression ();
2711 coff_type.orig_type = BTYPE (val);
2712 coff_type.basic_type = map_coff_types[coff_type.orig_type];
2714 tq_ptr = &coff_type.type_qualifiers[N_TQ];
2715 while (val &~ N_BTMASK)
2717 if (tq_ptr == &coff_type.type_qualifiers[0])
2719 /* FIXME: We could handle this by setting the continued bit.
2720 There would still be a limit: the .type argument can not
2722 as_warn ("The type of %s is too complex; it will be simplified",
2728 else if (ISFCN (val))
2729 *--tq_ptr = tq_Proc;
2730 else if (ISARY (val))
2731 *--tq_ptr = tq_Array;
2733 as_fatal ("Unrecognized .type argument");
2738 tq_shft = &coff_type.type_qualifiers[0];
2739 while (tq_ptr != &coff_type.type_qualifiers[N_TQ])
2740 *tq_shft++ = *tq_ptr++;
2742 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc)
2744 /* If this is a function, ignore it, so that we don't get two
2745 entries (one from the .ent, and one for the .def that
2746 precedes it). Save the type information so that the end
2747 block can properly add it after the begin block index. For
2748 MIPS knows what reason, we must strip off the function type
2750 coff_is_function = 1;
2751 tq_shft[-1] = tq_Nil;
2754 while (tq_shft != &coff_type.type_qualifiers[N_TQ])
2755 *tq_shft++ = tq_Nil;
2757 demand_empty_rest_of_line ();
2760 /* Handle the .tag directive, which gives the name of a structure,
2764 ecoff_directive_tag (ignore)
2770 if (coff_sym_name == (char *) NULL)
2772 as_warn (".tag pseudo-op used outside of .def/.endef; ignored");
2773 demand_empty_rest_of_line ();
2777 name = input_line_pointer;
2778 name_end = get_symbol_end ();
2780 coff_tag = (char *) xmalloc ((unsigned long) (strlen (name) + 1));
2781 strcpy (coff_tag, name);
2783 *input_line_pointer = name_end;
2785 demand_empty_rest_of_line ();
2788 /* Handle the .val directive, which gives the value of the symbol. It
2789 may be the name of a static or global symbol. */
2792 ecoff_directive_val (ignore)
2797 if (coff_sym_name == (char *) NULL)
2799 as_warn (".val pseudo-op used outside of .def/.endef; ignored");
2800 demand_empty_rest_of_line ();
2805 if (exp.X_op != O_constant && exp.X_op != O_symbol)
2807 as_bad (".val expression is too copmlex");
2808 demand_empty_rest_of_line ();
2812 if (exp.X_op == O_constant)
2813 coff_value = exp.X_add_number;
2816 coff_sym_value = exp.X_add_symbol;
2817 coff_sym_addend = exp.X_add_number;
2820 demand_empty_rest_of_line ();
2823 /* Handle the .endef directive, which terminates processing of COFF
2824 debugging information for a symbol. */
2827 ecoff_directive_endef (ignore)
2834 demand_empty_rest_of_line ();
2836 if (coff_sym_name == (char *) NULL)
2838 as_warn (".endef pseudo-op used before .def; ignored");
2842 name = coff_sym_name;
2843 coff_sym_name = (char *) NULL;
2845 /* If the symbol is a static or external, we have already gotten the
2846 appropriate type and class, so make sure we don't override those
2847 values. This is needed because there are some type and classes
2848 that are not in COFF, such as short data, etc. */
2849 if (coff_sym_value != (symbolS *) NULL)
2851 coff_symbol_typ = st_Nil;
2852 coff_storage_class = sc_Nil;
2855 coff_type.extra_sizes = coff_tag != (char *) NULL;
2856 if (coff_type.num_dims > 0)
2858 int diff = coff_type.num_dims - coff_type.num_sizes;
2859 int i = coff_type.num_dims - 1;
2862 if (coff_type.num_sizes != 1 || diff < 0)
2864 as_warn ("Bad COFF debugging info");
2868 /* If this is an array, make sure the same number of dimensions
2869 and sizes were passed, creating extra sizes for multiply
2870 dimensioned arrays if not passed. */
2871 coff_type.extra_sizes = 0;
2874 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1;
2877 coff_type.sizes[j] = (((j - diff) >= 0)
2878 ? coff_type.sizes[j - diff]
2883 coff_type.num_sizes = i + 1;
2884 for (i--; i >= 0; i--)
2885 coff_type.sizes[i] = (coff_type.sizes[i + 1]
2886 / coff_type.dimensions[i + 1]);
2889 else if (coff_symbol_typ == st_Member
2890 && coff_type.num_sizes - coff_type.extra_sizes == 1)
2892 /* Is this a bitfield? This is indicated by a structure memeber
2893 having a size field that isn't an array. */
2894 coff_type.bitfield = 1;
2897 /* Except for enumeration members & begin/ending of scopes, put the
2898 type word in the aux. symbol table. */
2899 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End)
2901 else if (coff_inside_enumeration)
2902 indx = cur_file_ptr->void_type;
2905 if (coff_type.basic_type == bt_Struct
2906 || coff_type.basic_type == bt_Union
2907 || coff_type.basic_type == bt_Enum)
2909 if (coff_tag == (char *) NULL)
2911 as_warn ("No tag specified for %s", name);
2915 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL,
2916 coff_type.basic_type);
2919 if (coff_is_function)
2921 last_func_type_info = coff_type;
2922 last_func_sym_value = coff_sym_value;
2926 indx = add_aux_sym_tir (&coff_type,
2928 &cur_file_ptr->thash_head[0]);
2931 /* Do any last minute adjustments that are necessary. */
2932 switch (coff_symbol_typ)
2937 /* For the beginning of structs, unions, and enumerations, the
2938 size info needs to be passed in the value field. */
2940 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes
2943 as_warn ("Bad COFF debugging information");
2947 coff_value = coff_type.sizes[0];
2949 coff_inside_enumeration = (coff_type.orig_type == T_ENUM);
2952 /* For the end of structs, unions, and enumerations, omit the
2953 name which is always ".eos". This needs to be done last, so
2954 that any error reporting above gives the correct name. */
2957 name = (char *) NULL;
2959 coff_inside_enumeration = 0;
2962 /* Members of structures and unions that aren't bitfields, need
2963 to adjust the value from a byte offset to a bit offset.
2964 Members of enumerations do not have the value adjusted, and
2965 can be distinguished by indx == indexNil. For enumerations,
2966 update the maximum enumeration value. */
2968 if (! coff_type.bitfield && ! coff_inside_enumeration)
2974 /* Add the symbol. */
2975 sym = add_ecoff_symbol (name,
2980 (symint_t) coff_value,
2983 /* deal with struct, union, and enum tags. */
2984 if (coff_symbol_typ == st_Block)
2986 /* Create or update the tag information. */
2987 tag_t *tag_ptr = get_tag (name,
2989 coff_type.basic_type);
2992 /* Remember any forward references. */
2993 for (pf = &sym->forward_ref;
2994 *pf != (forward_t *) NULL;
2997 *pf = tag_ptr->forward_ref;
2998 tag_ptr->forward_ref = (forward_t *) NULL;
3002 /* Parse .end directives. */
3005 ecoff_directive_end (ignore)
3013 if (cur_file_ptr == (efdr_t *) NULL)
3015 as_warn (".end directive without a preceding .file directive");
3016 demand_empty_rest_of_line ();
3020 if (cur_proc_ptr == (proc_t *) NULL)
3022 as_warn (".end directive without a preceding .ent directive");
3023 demand_empty_rest_of_line ();
3027 name = input_line_pointer;
3028 name_end = get_symbol_end ();
3031 if (! is_name_beginner (ch))
3033 as_warn (".end directive has no name");
3034 *input_line_pointer = name_end;
3035 demand_empty_rest_of_line ();
3039 /* The value is the distance between the .end directive and the
3040 corresponding symbol. We create a fake symbol to hold the
3041 current location, and put in the offset when we write out the
3043 ent = symbol_find (name);
3044 if (ent == (symbolS *) NULL)
3045 as_warn (".end directive names unknown symbol");
3048 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text,
3049 symbol_new ("L0\001", now_seg,
3050 (valueT) frag_now_fix (),
3052 (bfd_vma) 0, (symint_t) 0, (symint_t) 0);
3054 if (stabs_seen && generate_asm_lineno)
3058 n = xmalloc (strlen (name) + 4);
3061 (void) add_ecoff_symbol ((const char *) n, stGlobal, scText,
3062 ent, (bfd_vma) 0, 0,
3063 ECOFF_MARK_STAB (N_FUN));
3067 cur_proc_ptr = (proc_t *) NULL;
3069 *input_line_pointer = name_end;
3070 demand_empty_rest_of_line ();
3073 /* Parse .ent directives. */
3076 ecoff_directive_ent (ignore)
3083 if (cur_file_ptr == (efdr_t *) NULL)
3084 add_file ((const char *) NULL, 0, 1);
3086 if (cur_proc_ptr != (proc_t *) NULL)
3088 as_warn ("second .ent directive found before .end directive");
3089 demand_empty_rest_of_line ();
3093 name = input_line_pointer;
3094 name_end = get_symbol_end ();
3097 if (! is_name_beginner (ch))
3099 as_warn (".ent directive has no name");
3100 *input_line_pointer = name_end;
3101 demand_empty_rest_of_line ();
3105 add_procedure (name);
3107 *input_line_pointer = name_end;
3109 /* The .ent directive is sometimes followed by a number. I'm not
3110 really sure what the number means. I don't see any way to store
3111 the information in the PDR. The Irix 4 assembler seems to ignore
3114 if (*input_line_pointer == ',')
3116 ++input_line_pointer;
3119 if (isdigit (*input_line_pointer) || *input_line_pointer == '-')
3120 (void) get_absolute_expression ();
3122 demand_empty_rest_of_line ();
3125 /* Parse .extern directives. */
3128 ecoff_directive_extern (ignore)
3136 name = input_line_pointer;
3137 c = get_symbol_end ();
3138 symbolp = symbol_find_or_make (name);
3139 *input_line_pointer = c;
3141 S_SET_EXTERNAL (symbolp);
3143 if (*input_line_pointer == ',')
3144 ++input_line_pointer;
3145 size = get_absolute_expression ();
3147 symbolp->ecoff_extern_size = size;
3150 /* Parse .file directives. */
3153 ecoff_directive_file (ignore)
3160 if (cur_proc_ptr != (proc_t *) NULL)
3162 as_warn ("No way to handle .file within .ent/.end section");
3163 demand_empty_rest_of_line ();
3167 indx = (int) get_absolute_expression ();
3169 /* FIXME: we don't have to save the name here. */
3170 name = demand_copy_C_string (&len);
3172 add_file (name, indx - 1, 0);
3174 demand_empty_rest_of_line ();
3177 /* Parse .fmask directives. */
3180 ecoff_directive_fmask (ignore)
3185 if (cur_proc_ptr == (proc_t *) NULL)
3187 as_warn (".fmask outside of .ent");
3188 demand_empty_rest_of_line ();
3192 if (get_absolute_expression_and_terminator (&val) != ',')
3194 as_warn ("Bad .fmask directive");
3195 --input_line_pointer;
3196 demand_empty_rest_of_line ();
3200 cur_proc_ptr->pdr.fregmask = val;
3201 cur_proc_ptr->pdr.fregoffset = get_absolute_expression ();
3203 demand_empty_rest_of_line ();
3206 /* Parse .frame directives. */
3209 ecoff_directive_frame (ignore)
3214 if (cur_proc_ptr == (proc_t *) NULL)
3216 as_warn (".frame outside of .ent");
3217 demand_empty_rest_of_line ();
3221 cur_proc_ptr->pdr.framereg = tc_get_register (1);
3224 if (*input_line_pointer++ != ','
3225 || get_absolute_expression_and_terminator (&val) != ',')
3227 as_warn ("Bad .frame directive");
3228 --input_line_pointer;
3229 demand_empty_rest_of_line ();
3233 cur_proc_ptr->pdr.frameoffset = val;
3235 cur_proc_ptr->pdr.pcreg = tc_get_register (0);
3237 #if 0 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according
3238 to Sandro. I don't yet know where this value should be stored, if
3240 demand_empty_rest_of_line ();
3246 /* Parse .mask directives. */
3249 ecoff_directive_mask (ignore)
3254 if (cur_proc_ptr == (proc_t *) NULL)
3256 as_warn (".mask outside of .ent");
3257 demand_empty_rest_of_line ();
3261 if (get_absolute_expression_and_terminator (&val) != ',')
3263 as_warn ("Bad .mask directive");
3264 --input_line_pointer;
3265 demand_empty_rest_of_line ();
3269 cur_proc_ptr->pdr.regmask = val;
3270 cur_proc_ptr->pdr.regoffset = get_absolute_expression ();
3272 demand_empty_rest_of_line ();
3275 /* Parse .loc directives. */
3278 ecoff_directive_loc (ignore)
3281 lineno_list_t *list;
3284 if (cur_file_ptr == (efdr_t *) NULL)
3286 as_warn (".loc before .file");
3287 demand_empty_rest_of_line ();
3291 if (now_seg != text_section)
3293 as_warn (".loc outside of .text");
3294 demand_empty_rest_of_line ();
3298 /* Skip the file number. */
3300 get_absolute_expression ();
3303 lineno = get_absolute_expression ();
3307 listing_source_line (lineno);
3310 /* If we're building stabs, then output a special label rather than
3311 ECOFF line number info. */
3314 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text,
3315 symbol_new ("L0\001", now_seg,
3316 (valueT) frag_now_fix (),
3318 (bfd_vma) 0, 0, lineno);
3322 list = allocate_lineno_list ();
3324 list->next = (lineno_list_t *) NULL;
3325 list->file = cur_file_ptr;
3326 list->proc = cur_proc_ptr;
3327 list->frag = frag_now;
3328 list->paddr = frag_now_fix ();
3329 list->lineno = lineno;
3331 /* A .loc directive will sometimes appear before a .ent directive,
3332 which means that cur_proc_ptr will be NULL here. Arrange to
3334 if (cur_proc_ptr == (proc_t *) NULL)
3338 pl = &noproc_lineno;
3339 while (*pl != (lineno_list_t *) NULL)
3345 *last_lineno_ptr = list;
3346 last_lineno_ptr = &list->next;
3350 /* Make sure the @stabs symbol is emitted. */
3358 /* Add a dummy @stabs dymbol. */
3360 (void) add_ecoff_symbol (stabs_symbol, stNil, scInfo,
3362 (bfd_vma) 0, (symint_t) -1,
3363 ECOFF_MARK_STAB (0));
3367 /* Parse .weakext directives. */
3370 ecoff_directive_weakext (ignore)
3378 name = input_line_pointer;
3379 c = get_symbol_end ();
3380 symbolP = symbol_find_or_make (name);
3381 *input_line_pointer = c;
3387 if (S_IS_DEFINED (symbolP))
3389 as_bad ("Ignoring attempt to redefine symbol `%s'.",
3390 S_GET_NAME (symbolP));
3391 ignore_rest_of_line ();
3395 ++input_line_pointer;
3397 if (! is_end_of_line[(unsigned char) *input_line_pointer])
3400 if (exp.X_op != O_symbol)
3402 as_bad ("bad .weakext directive");
3403 ignore_rest_of_line();
3406 symbolP->sy_value = exp;
3410 S_SET_WEAK (symbolP);
3412 demand_empty_rest_of_line ();
3415 /* Handle .stabs directives. The actual parsing routine is done by a
3416 generic routine. This routine is called via OBJ_PROCESS_STAB.
3417 When this is called, input_line_pointer will be pointing at the
3418 value field of the stab.
3420 .stabs directives have five fields:
3421 "string" a string, encoding the type information.
3422 code a numeric code, defined in <stab.h>
3424 desc a zero or line number
3425 value a numeric value or an address.
3427 If the value is relocatable, we transform this into:
3428 iss points as an index into string space
3429 value value from lookup of the name
3430 st st from lookup of the name
3431 sc sc from lookup of the name
3432 index code|CODE_MASK
3434 If the value is not relocatable, we transform this into:
3435 iss points as an index into string space
3439 index code|CODE_MASK
3441 .stabn directives have four fields (string is null):
3442 code a numeric code, defined in <stab.h>
3444 desc a zero or a line number
3445 value a numeric value or an address. */
3448 ecoff_stab (sec, what, string, type, other, desc)
3456 efdr_t *save_file_ptr = cur_file_ptr;
3462 localsym_t *hold = NULL;
3464 ecoff_debugging_seen = 1;
3466 /* We don't handle .stabd. */
3467 if (what != 's' && what != 'n')
3469 as_bad (".stab%c is not supported", what);
3473 /* A .stabn uses a null name, not an empty string. */
3477 /* We ignore the other field. */
3479 as_warn (".stab%c: ignoring non-zero other field", what);
3481 /* Make sure we have a current file. */
3482 if (cur_file_ptr == (efdr_t *) NULL)
3484 add_file ((const char *) NULL, 0, 1);
3485 save_file_ptr = cur_file_ptr;
3488 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
3490 if (stabs_seen == 0)
3493 /* Line number stabs are handled differently, since they have two
3494 values, the line number and the address of the label. We use the
3495 index field (aka desc) to hold the line number, and the value
3496 field to hold the address. The symbol type is st_Label, which
3497 should be different from the other stabs, so that gdb can
3499 if (type == N_SLINE)
3507 listing_source_line ((unsigned int) desc);
3510 dummy_symr.index = desc;
3511 if (dummy_symr.index != desc)
3513 as_warn ("Line number (%d) for .stab%c directive cannot fit in index field (20 bits)",
3518 name = input_line_pointer;
3519 name_end = get_symbol_end ();
3521 sym = symbol_find_or_make (name);
3522 *input_line_pointer = name_end;
3532 if (listing && (type == N_SO || type == N_SOL))
3533 listing_source_file (string);
3536 if (isdigit (*input_line_pointer)
3537 || *input_line_pointer == '-'
3538 || *input_line_pointer == '+')
3542 sym = (symbolS *) NULL;
3543 value = get_absolute_expression ();
3545 else if (! is_name_beginner ((unsigned char) *input_line_pointer))
3547 as_warn ("Illegal .stab%c directive, bad character", what);
3562 name = input_line_pointer;
3563 name_end = get_symbol_end ();
3564 sym = symbol_find_or_make (name);
3565 *input_line_pointer = name_end;
3569 sym = symbol_find_or_make (string);
3570 expression (&sym->sy_value);
3574 indx = ECOFF_MARK_STAB (type);
3577 /* Don't store the stabs symbol we are creating as the type of the
3578 ECOFF symbol. We want to compute the type of the ECOFF symbol
3580 if (sym != (symbolS *) NULL)
3581 hold = sym->ecoff_symbol;
3583 (void) add_ecoff_symbol (string, st, sc, sym, (bfd_vma) 0, value, indx);
3585 if (sym != (symbolS *) NULL)
3586 sym->ecoff_symbol = hold;
3588 /* Restore normal file type. */
3589 cur_file_ptr = save_file_ptr;
3592 /* Frob an ECOFF symbol. Small common symbols go into a special
3593 .scommon section rather than bfd_com_section. */
3596 ecoff_frob_symbol (sym)
3599 if (S_IS_COMMON (sym)
3600 && S_GET_VALUE (sym) > 0
3601 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput))
3603 static asection scom_section;
3604 static asymbol scom_symbol;
3606 /* We must construct a fake section similar to bfd_com_section
3607 but with the name .scommon. */
3608 if (scom_section.name == NULL)
3610 scom_section = bfd_com_section;
3611 scom_section.name = ".scommon";
3612 scom_section.output_section = &scom_section;
3613 scom_section.symbol = &scom_symbol;
3614 scom_section.symbol_ptr_ptr = &scom_section.symbol;
3615 scom_symbol = *bfd_com_section.symbol;
3616 scom_symbol.name = ".scommon";
3617 scom_symbol.section = &scom_section;
3619 S_SET_SEGMENT (sym, &scom_section);
3622 /* Double check weak symbols. */
3623 if (sym->bsym->flags & BSF_WEAK)
3625 if (S_IS_COMMON (sym))
3626 as_bad ("Symbol `%s' can not be both weak and common",
3631 /* Add bytes to the symbolic information buffer. */
3634 ecoff_add_bytes (buf, bufend, bufptr, need)
3644 need -= *bufend - bufptr;
3645 if (need < PAGE_SIZE)
3647 want = (*bufend - *buf) + need;
3648 *buf = xrealloc (*buf, want);
3649 *bufend = *buf + want;
3653 /* Adjust the symbolic information buffer to the alignment required
3654 for the ECOFF target debugging information. */
3656 static unsigned long
3657 ecoff_padding_adjust (backend, buf, bufend, offset, bufptrptr)
3658 const struct ecoff_debug_swap *backend;
3661 unsigned long offset;
3664 bfd_size_type align;
3666 align = backend->debug_align;
3667 if ((offset & (align - 1)) != 0)
3671 add = align - (offset & (align - 1));
3672 if (*bufend - (*buf + offset) < add)
3673 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add);
3674 memset (*buf + offset, 0, add);
3676 if (bufptrptr != (char **) NULL)
3677 *bufptrptr = *buf + offset;
3683 /* Build the line number information. */
3685 static unsigned long
3686 ecoff_build_lineno (backend, buf, bufend, offset, linecntptr)
3687 const struct ecoff_debug_swap *backend;
3690 unsigned long offset;
3694 register lineno_list_t *l;
3695 lineno_list_t *last;
3701 lineno_list_t first;
3703 if (linecntptr != (long *) NULL)
3706 bufptr = *buf + offset;
3708 file = (efdr_t *) NULL;
3709 proc = (proc_t *) NULL;
3710 last = (lineno_list_t *) NULL;
3715 /* For some reason the address of the first procedure is ignored
3716 when reading line numbers. This doesn't matter if the address of
3717 the first procedure is 0, but when gcc is generating MIPS
3718 embedded PIC code, it will put strings in the .text section
3719 before the first procedure. We cope by inserting a dummy line if
3720 the address of the first procedure is not 0. Hopefully this
3721 won't screw things up too badly. */
3722 if (first_proc_ptr != (proc_t *) NULL
3723 && first_lineno != (lineno_list_t *) NULL
3724 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym)
3725 + bfd_get_section_vma (stdoutput,
3726 S_GET_SEGMENT (first_proc_ptr->sym->as_sym)))
3729 first.file = first_lineno->file;
3730 first.proc = first_lineno->proc;
3731 first.frag = &zero_address_frag;
3735 first.next = first_lineno;
3736 first_lineno = &first;
3739 for (l = first_lineno; l != (lineno_list_t *) NULL; l = l->next)
3744 /* Get the offset to the memory address of the next line number
3745 (in words). Do this first, so that we can skip ahead to the
3746 next useful line number entry. */
3747 if (l->next == (lineno_list_t *) NULL)
3749 /* We want a count of zero, but it will be decremented
3750 before it is used. */
3753 else if (l->next->frag->fr_address + l->next->paddr
3754 > l->frag->fr_address + l->paddr)
3756 count = ((l->next->frag->fr_address + l->next->paddr
3757 - (l->frag->fr_address + l->paddr))
3762 /* Don't change last, so we still get the right delta. */
3766 if (l->file != file || l->proc != proc)
3768 if (l->proc != proc && proc != (proc_t *) NULL)
3769 proc->pdr.lnHigh = last->lineno;
3770 if (l->file != file && file != (efdr_t *) NULL)
3772 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3773 file->fdr.cline = totcount + count;
3774 if (linecntptr != (long *) NULL)
3775 *linecntptr += totcount + count;
3779 if (l->file != file)
3781 efdr_t *last_file = file;
3784 if (last_file != (efdr_t *) NULL)
3786 = last_file->fdr.ilineBase + last_file->fdr.cline;
3788 file->fdr.ilineBase = 0;
3789 file->fdr.cbLineOffset = c;
3791 if (l->proc != proc)
3794 if (proc != (proc_t *) NULL)
3796 proc->pdr.lnLow = l->lineno;
3797 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset;
3798 proc->pdr.iline = totcount;
3802 last = (lineno_list_t *) NULL;
3807 /* Get the offset to this line number. */
3808 if (last == (lineno_list_t *) NULL)
3811 delta = l->lineno - last->lineno;
3813 /* Put in the offset to this line number. */
3818 /* 1 is added to each count read. */
3820 /* We can only adjust the word count by up to 15 words at a
3832 if (delta >= -7 && delta <= 7)
3834 if (bufptr >= *bufend)
3835 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3836 *bufptr++ = setcount + (delta << 4);
3844 if (*bufend - bufptr < 3)
3845 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3);
3846 *bufptr++ = setcount + (8 << 4);
3847 if (delta < -0x8000)
3852 else if (delta > 0x7fff)
3862 *bufptr++ = set >> 8;
3863 *bufptr++ = set & 0xffff;
3868 /* Finish adjusting the count. */
3871 if (bufptr >= *bufend)
3872 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3873 /* 1 is added to each count read. */
3892 if (proc != (proc_t *) NULL)
3893 proc->pdr.lnHigh = last->lineno;
3894 if (file != (efdr_t *) NULL)
3896 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3897 file->fdr.cline = totcount;
3900 if (linecntptr != (long *) NULL)
3901 *linecntptr += totcount;
3903 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr);
3908 /* Build and swap out the symbols. */
3910 static unsigned long
3911 ecoff_build_symbols (backend, buf, bufend, offset)
3912 const struct ecoff_debug_swap *backend;
3915 unsigned long offset;
3917 const bfd_size_type external_sym_size = backend->external_sym_size;
3918 void (* const swap_sym_out) PARAMS ((bfd *, const SYMR *, PTR))
3919 = backend->swap_sym_out;
3922 vlinks_t *file_link;
3924 sym_out = *buf + offset;
3928 /* The symbols are stored by file. */
3929 for (file_link = file_desc.first;
3930 file_link != (vlinks_t *) NULL;
3931 file_link = file_link->next)
3938 if (file_link->next == (vlinks_t *) NULL)
3939 fil_cnt = file_desc.objects_last_page;
3941 fil_cnt = file_desc.objects_per_page;
3942 fil_ptr = file_link->datum->file;
3943 fil_end = fil_ptr + fil_cnt;
3944 for (; fil_ptr < fil_end; fil_ptr++)
3948 fil_ptr->fdr.isymBase = isym;
3950 for (sym_link = fil_ptr->symbols.first;
3951 sym_link != (vlinks_t *) NULL;
3952 sym_link = sym_link->next)
3955 localsym_t *sym_ptr;
3956 localsym_t *sym_end;
3958 if (sym_link->next == (vlinks_t *) NULL)
3959 sym_cnt = fil_ptr->symbols.objects_last_page;
3961 sym_cnt = fil_ptr->symbols.objects_per_page;
3962 sym_ptr = sym_link->datum->sym;
3963 sym_end = sym_ptr + sym_cnt;
3964 for (; sym_ptr < sym_end; sym_ptr++)
3970 know (sym_ptr->file_ptr == fil_ptr);
3972 /* If there is no associated gas symbol, then this
3973 is a pure debugging symbol. We have already
3974 added the name (if any) to fil_ptr->strings.
3975 Otherwise we must decide whether this is an
3976 external or a local symbol (actually, it may be
3977 both if the local provides additional debugging
3978 information for the external). */
3980 as_sym = sym_ptr->as_sym;
3981 if (as_sym != (symbolS *) NULL)
3985 /* The value of a block start symbol is the
3986 offset from the start of the procedure. For
3987 other symbols we just use the gas value (but
3988 we must offset it by the vma of the section,
3989 just as BFD does, because BFD will not see
3991 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block
3992 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text)
3996 know (sym_ptr->proc_ptr != (proc_t *) NULL);
3997 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
3998 if (S_GET_SEGMENT (as_sym)
3999 != S_GET_SEGMENT (begin_sym))
4000 as_warn (".begin/.bend in different segments");
4001 sym_ptr->ecoff_sym.asym.value =
4002 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4005 sym_ptr->ecoff_sym.asym.value =
4006 (S_GET_VALUE (as_sym)
4007 + bfd_get_section_vma (stdoutput,
4008 S_GET_SEGMENT (as_sym))
4011 sym_ptr->ecoff_sym.weakext = S_IS_WEAK (as_sym);
4013 /* Set st_Proc to st_StaticProc for local
4015 if (sym_ptr->ecoff_sym.asym.st == st_Proc
4016 && S_IS_DEFINED (as_sym)
4017 && ! S_IS_EXTERNAL (as_sym)
4018 && ! S_IS_WEAK (as_sym))
4019 sym_ptr->ecoff_sym.asym.st = st_StaticProc;
4021 /* Get the type and storage class based on where
4022 the symbol actually wound up. Traditionally,
4023 N_LBRAC and N_RBRAC are *not* relocated. */
4024 indx = sym_ptr->ecoff_sym.asym.index;
4025 if (sym_ptr->ecoff_sym.asym.st == st_Nil
4026 && sym_ptr->ecoff_sym.asym.sc == sc_Nil
4027 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4028 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC)
4029 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC))))
4032 const char *segname;
4036 seg = S_GET_SEGMENT (as_sym);
4037 segname = segment_name (seg);
4039 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
4040 && (S_IS_EXTERNAL (as_sym)
4041 || S_IS_WEAK (as_sym)
4042 || ! S_IS_DEFINED (as_sym)))
4044 if ((as_sym->bsym->flags & BSF_FUNCTION) != 0)
4049 else if (seg == text_section)
4054 if (! S_IS_DEFINED (as_sym))
4056 if (as_sym->ecoff_extern_size == 0
4057 || (as_sym->ecoff_extern_size
4058 > bfd_get_gp_size (stdoutput)))
4063 sym_ptr->ecoff_sym.asym.value =
4064 as_sym->ecoff_extern_size;
4067 S_SET_SIZE (as_sym, as_sym->ecoff_extern_size);
4070 else if (S_IS_COMMON (as_sym))
4072 if (S_GET_VALUE (as_sym) > 0
4073 && (S_GET_VALUE (as_sym)
4074 <= bfd_get_gp_size (stdoutput)))
4079 else if (seg == text_section)
4081 else if (seg == data_section)
4083 else if (strcmp (segname, ".rdata") == 0
4084 || strcmp (segname, ".rodata") == 0)
4086 else if (strcmp (segname, ".sdata") == 0)
4088 else if (seg == bss_section)
4090 else if (strcmp (segname, ".sbss") == 0)
4092 else if (seg == &bfd_abs_section)
4096 /* This must be a user named section.
4097 This is not possible in ECOFF, but it
4102 sym_ptr->ecoff_sym.asym.st = (int) st;
4103 sym_ptr->ecoff_sym.asym.sc = (int) sc;
4106 /* This is just an external symbol if it is
4107 outside a procedure and it has a type.
4108 FIXME: g++ will generate symbols which have
4109 different names in the debugging information
4110 than the actual symbol. Should we handle
4112 if ((S_IS_EXTERNAL (as_sym)
4113 || S_IS_WEAK (as_sym)
4114 || ! S_IS_DEFINED (as_sym))
4115 && sym_ptr->proc_ptr == (proc_t *) NULL
4116 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil
4117 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym))
4120 /* If an st_end symbol has an associated gas
4121 symbol, then it is a local label created for
4122 a .bend or .end directive. Stabs line
4123 numbers will have \001 in the names. */
4125 && sym_ptr->ecoff_sym.asym.st != st_End
4126 && strchr (sym_ptr->name, '\001') == 0)
4127 sym_ptr->ecoff_sym.asym.iss =
4128 add_string (&fil_ptr->strings,
4134 /* We now know the index of this symbol; fill in
4135 locations that have been waiting for that
4137 if (sym_ptr->begin_ptr != (localsym_t *) NULL)
4139 localsym_t *begin_ptr;
4143 begin_ptr = sym_ptr->begin_ptr;
4144 know (begin_ptr->sym_index != -1);
4145 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index;
4146 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4147 sym_ptr->ecoff_sym.asym.iss =
4148 begin_ptr->ecoff_sym.asym.iss;
4150 begin_type = begin_ptr->ecoff_sym.asym.st;
4151 if (begin_type == st_File
4152 || begin_type == st_Block)
4154 begin_ptr->ecoff_sym.asym.index =
4155 isym - ifilesym + 1;
4156 (*swap_sym_out) (stdoutput,
4157 &begin_ptr->ecoff_sym.asym,
4160 + (begin_ptr->sym_index
4161 * external_sym_size)));
4165 know (begin_ptr->index_ptr != (aux_t *) NULL);
4166 begin_ptr->index_ptr->data.isym =
4167 isym - ifilesym + 1;
4170 /* The value of the symbol marking the end of a
4171 procedure is the size of the procedure. The
4172 value of the symbol marking the end of a
4173 block is the offset from the start of the
4174 procedure to the block. */
4175 if (begin_type == st_Proc
4176 || begin_type == st_StaticProc)
4178 know (as_sym != (symbolS *) NULL);
4179 know (begin_ptr->as_sym != (symbolS *) NULL);
4180 if (S_GET_SEGMENT (as_sym)
4181 != S_GET_SEGMENT (begin_ptr->as_sym))
4182 as_warn (".begin/.bend in different segments");
4183 sym_ptr->ecoff_sym.asym.value =
4184 (S_GET_VALUE (as_sym)
4185 - S_GET_VALUE (begin_ptr->as_sym));
4187 S_SET_SIZE (begin_ptr->as_sym,
4188 sym_ptr->ecoff_sym.asym.value);
4191 else if (begin_type == st_Block
4192 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4196 know (as_sym != (symbolS *) NULL);
4197 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4198 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4199 if (S_GET_SEGMENT (as_sym)
4200 != S_GET_SEGMENT (begin_sym))
4201 as_warn (".begin/.bend in different segments");
4202 sym_ptr->ecoff_sym.asym.value =
4203 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4207 for (f = sym_ptr->forward_ref;
4208 f != (forward_t *) NULL;
4212 f->ifd_ptr->data.isym = fil_ptr->file_index;
4213 f->index_ptr->data.rndx.index = isym - ifilesym;
4218 if (*bufend - sym_out < external_sym_size)
4219 sym_out = ecoff_add_bytes (buf, bufend,
4222 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym,
4224 sym_out += external_sym_size;
4226 sym_ptr->sym_index = isym;
4228 if (sym_ptr->proc_ptr != (proc_t *) NULL
4229 && sym_ptr->proc_ptr->sym == sym_ptr)
4230 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym;
4235 /* Record the local symbol index and file number in
4236 case this is an external symbol. Note that this
4237 destroys the asym.index field. */
4238 if (as_sym != (symbolS *) NULL
4239 && as_sym->ecoff_symbol == sym_ptr)
4241 if ((sym_ptr->ecoff_sym.asym.st == st_Proc
4242 || sym_ptr->ecoff_sym.asym.st == st_StaticProc)
4244 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1;
4245 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index;
4249 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase;
4253 return offset + isym * external_sym_size;
4256 /* Swap out the procedure information. */
4258 static unsigned long
4259 ecoff_build_procs (backend, buf, bufend, offset)
4260 const struct ecoff_debug_swap *backend;
4263 unsigned long offset;
4265 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4266 void (* const swap_pdr_out) PARAMS ((bfd *, const PDR *, PTR))
4267 = backend->swap_pdr_out;
4270 vlinks_t *file_link;
4272 pdr_out = *buf + offset;
4276 /* The procedures are stored by file. */
4277 for (file_link = file_desc.first;
4278 file_link != (vlinks_t *) NULL;
4279 file_link = file_link->next)
4285 if (file_link->next == (vlinks_t *) NULL)
4286 fil_cnt = file_desc.objects_last_page;
4288 fil_cnt = file_desc.objects_per_page;
4289 fil_ptr = file_link->datum->file;
4290 fil_end = fil_ptr + fil_cnt;
4291 for (; fil_ptr < fil_end; fil_ptr++)
4293 vlinks_t *proc_link;
4296 fil_ptr->fdr.ipdFirst = iproc;
4298 for (proc_link = fil_ptr->procs.first;
4299 proc_link != (vlinks_t *) NULL;
4300 proc_link = proc_link->next)
4306 if (proc_link->next == (vlinks_t *) NULL)
4307 prc_cnt = fil_ptr->procs.objects_last_page;
4309 prc_cnt = fil_ptr->procs.objects_per_page;
4310 proc_ptr = proc_link->datum->proc;
4311 proc_end = proc_ptr + prc_cnt;
4312 for (; proc_ptr < proc_end; proc_ptr++)
4317 adr_sym = proc_ptr->sym->as_sym;
4318 adr = (S_GET_VALUE (adr_sym)
4319 + bfd_get_section_vma (stdoutput,
4320 S_GET_SEGMENT (adr_sym)));
4323 /* This code used to force the adr of the very
4324 first fdr to be 0. However, the native tools
4325 don't do that, and I can't remember why it
4326 used to work that way, so I took it out. */
4327 fil_ptr->fdr.adr = adr;
4330 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr;
4331 if (*bufend - pdr_out < external_pdr_size)
4332 pdr_out = ecoff_add_bytes (buf, bufend,
4335 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out);
4336 pdr_out += external_pdr_size;
4340 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst;
4344 return offset + iproc * external_pdr_size;
4347 /* Swap out the aux information. */
4349 static unsigned long
4350 ecoff_build_aux (backend, buf, bufend, offset)
4351 const struct ecoff_debug_swap *backend;
4354 unsigned long offset;
4357 union aux_ext *aux_out;
4359 vlinks_t *file_link;
4361 bigendian = bfd_big_endian (stdoutput);
4363 aux_out = (union aux_ext *) (*buf + offset);
4367 /* The aux entries are stored by file. */
4368 for (file_link = file_desc.first;
4369 file_link != (vlinks_t *) NULL;
4370 file_link = file_link->next)
4376 if (file_link->next == (vlinks_t *) NULL)
4377 fil_cnt = file_desc.objects_last_page;
4379 fil_cnt = file_desc.objects_per_page;
4380 fil_ptr = file_link->datum->file;
4381 fil_end = fil_ptr + fil_cnt;
4382 for (; fil_ptr < fil_end; fil_ptr++)
4386 fil_ptr->fdr.fBigendian = bigendian;
4387 fil_ptr->fdr.iauxBase = iaux;
4388 for (aux_link = fil_ptr->aux_syms.first;
4389 aux_link != (vlinks_t *) NULL;
4390 aux_link = aux_link->next)
4396 if (aux_link->next == (vlinks_t *) NULL)
4397 aux_cnt = fil_ptr->aux_syms.objects_last_page;
4399 aux_cnt = fil_ptr->aux_syms.objects_per_page;
4400 aux_ptr = aux_link->datum->aux;
4401 aux_end = aux_ptr + aux_cnt;
4402 for (; aux_ptr < aux_end; aux_ptr++)
4404 if (*bufend - (char *) aux_out < sizeof (union aux_ext))
4405 aux_out = ((union aux_ext *)
4406 ecoff_add_bytes (buf, bufend,
4408 sizeof (union aux_ext)));
4409 switch (aux_ptr->type)
4412 (*backend->swap_tir_out) (bigendian,
4417 (*backend->swap_rndx_out) (bigendian,
4418 &aux_ptr->data.rndx,
4422 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow,
4426 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh,
4430 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym,
4434 AUX_PUT_ISS (bigendian, aux_ptr->data.iss,
4438 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width,
4442 AUX_PUT_COUNT (bigendian, aux_ptr->data.count,
4451 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase;
4455 return ecoff_padding_adjust (backend, buf, bufend,
4456 offset + iaux * sizeof (union aux_ext),
4460 /* Copy out the strings from a varray_t. This returns the number of
4461 bytes copied, rather than the new offset. */
4463 static unsigned long
4464 ecoff_build_strings (buf, bufend, offset, vp)
4467 unsigned long offset;
4474 str_out = *buf + offset;
4478 for (str_link = vp->first;
4479 str_link != (vlinks_t *) NULL;
4480 str_link = str_link->next)
4482 unsigned long str_cnt;
4484 if (str_link->next == (vlinks_t *) NULL)
4485 str_cnt = vp->objects_last_page;
4487 str_cnt = vp->objects_per_page;
4489 if (*bufend - str_out < str_cnt)
4490 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt);
4492 memcpy (str_out, str_link->datum->byte, str_cnt);
4500 /* Dump out the local strings. */
4502 static unsigned long
4503 ecoff_build_ss (backend, buf, bufend, offset)
4504 const struct ecoff_debug_swap *backend;
4507 unsigned long offset;
4510 vlinks_t *file_link;
4514 for (file_link = file_desc.first;
4515 file_link != (vlinks_t *) NULL;
4516 file_link = file_link->next)
4522 if (file_link->next == (vlinks_t *) NULL)
4523 fil_cnt = file_desc.objects_last_page;
4525 fil_cnt = file_desc.objects_per_page;
4526 fil_ptr = file_link->datum->file;
4527 fil_end = fil_ptr + fil_cnt;
4528 for (; fil_ptr < fil_end; fil_ptr++)
4532 fil_ptr->fdr.issBase = iss;
4533 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss,
4535 fil_ptr->fdr.cbSs = ss_cnt;
4540 return ecoff_padding_adjust (backend, buf, bufend, offset + iss,
4544 /* Swap out the file descriptors. */
4546 static unsigned long
4547 ecoff_build_fdr (backend, buf, bufend, offset)
4548 const struct ecoff_debug_swap *backend;
4551 unsigned long offset;
4553 const bfd_size_type external_fdr_size = backend->external_fdr_size;
4554 void (* const swap_fdr_out) PARAMS ((bfd *, const FDR *, PTR))
4555 = backend->swap_fdr_out;
4558 vlinks_t *file_link;
4562 fdr_out = *buf + offset;
4564 for (file_link = file_desc.first;
4565 file_link != (vlinks_t *) NULL;
4566 file_link = file_link->next)
4572 if (file_link->next == (vlinks_t *) NULL)
4573 fil_cnt = file_desc.objects_last_page;
4575 fil_cnt = file_desc.objects_per_page;
4576 fil_ptr = file_link->datum->file;
4577 fil_end = fil_ptr + fil_cnt;
4578 for (; fil_ptr < fil_end; fil_ptr++)
4580 if (*bufend - fdr_out < external_fdr_size)
4581 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out,
4583 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out);
4584 fdr_out += external_fdr_size;
4589 return offset + ifile * external_fdr_size;
4592 /* Set up the external symbols. These are supposed to be handled by
4593 the backend. This routine just gets the right information and
4594 calls a backend function to deal with it. */
4599 register symbolS *sym;
4601 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4603 if (sym->ecoff_symbol == NULL)
4606 /* If this is a local symbol, then force the fields to zero. */
4607 if (! S_IS_EXTERNAL (sym)
4608 && ! S_IS_WEAK (sym)
4609 && S_IS_DEFINED (sym))
4611 sym->ecoff_symbol->ecoff_sym.asym.value = 0;
4612 sym->ecoff_symbol->ecoff_sym.asym.st = (int) st_Nil;
4613 sym->ecoff_symbol->ecoff_sym.asym.sc = (int) sc_Nil;
4614 sym->ecoff_symbol->ecoff_sym.asym.index = indexNil;
4617 obj_ecoff_set_ext (sym, &sym->ecoff_symbol->ecoff_sym);
4621 /* Build the ECOFF debugging information. */
4624 ecoff_build_debug (hdr, bufp, backend)
4627 const struct ecoff_debug_swap *backend;
4629 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4634 efdr_t *hold_file_ptr;
4635 proc_t * hold_proc_ptr;
4639 unsigned long offset;
4641 /* Make sure we have a file. */
4642 if (first_file == (efdr_t *) NULL)
4643 add_file ((const char *) NULL, 0, 1);
4645 /* Handle any top level tags. */
4646 for (ptag = top_tag_head->first_tag;
4647 ptag != (tag_t *) NULL;
4650 if (ptag->forward_ref != (forward_t *) NULL)
4651 add_unknown_tag (ptag);
4653 ptag_next = ptag->same_block;
4654 ptag->hash_ptr->tag_ptr = ptag->same_name;
4658 free_thead (top_tag_head);
4660 /* Look through the symbols. Add debugging information for each
4661 symbol that has not already received it. */
4662 hold_file_ptr = cur_file_ptr;
4663 hold_proc_ptr = cur_proc_ptr;
4664 cur_proc_ptr = (proc_t *) NULL;
4665 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4667 if (sym->ecoff_symbol != NULL
4668 || sym->ecoff_file == (efdr_t *) NULL
4669 || (sym->bsym->flags & BSF_SECTION_SYM) != 0)
4672 cur_file_ptr = sym->ecoff_file;
4673 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym,
4674 (bfd_vma) 0, S_GET_VALUE (sym), indexNil);
4676 cur_proc_ptr = hold_proc_ptr;
4677 cur_file_ptr = hold_file_ptr;
4679 /* Output an ending symbol for all the files. We have to do this
4680 here for the last file, so we may as well do it for all of the
4683 for (fil_ptr = first_file;
4684 fil_ptr != (efdr_t *) NULL;
4685 fil_ptr = fil_ptr->next_file)
4687 cur_file_ptr = fil_ptr;
4688 while (cur_file_ptr->cur_scope != (scope_t *) NULL
4689 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL)
4691 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev;
4692 if (! end_warning && ! cur_file_ptr->fake)
4694 as_warn ("Missing .end or .bend at end of file");
4698 if (cur_file_ptr->cur_scope != (scope_t *) NULL)
4699 (void) add_ecoff_symbol ((const char *) NULL,
4707 /* Build the symbolic information. */
4709 buf = xmalloc (PAGE_SIZE);
4710 bufend = buf + PAGE_SIZE;
4712 /* Build the line number information. */
4713 hdr->cbLineOffset = offset;
4714 offset = ecoff_build_lineno (backend, &buf, &bufend, offset,
4716 hdr->cbLine = offset - hdr->cbLineOffset;
4718 /* We don't use dense numbers at all. */
4720 hdr->cbDnOffset = 0;
4722 /* We can't build the PDR table until we have built the symbols,
4723 because a PDR contains a symbol index. However, we set aside
4724 space at this point. */
4725 hdr->ipdMax = proc_cnt;
4726 hdr->cbPdOffset = offset;
4727 if (bufend - (buf + offset) < proc_cnt * external_pdr_size)
4728 (void) ecoff_add_bytes (&buf, &bufend, buf + offset,
4729 proc_cnt * external_pdr_size);
4730 offset += proc_cnt * external_pdr_size;
4732 /* Build the local symbols. */
4733 hdr->cbSymOffset = offset;
4734 offset = ecoff_build_symbols (backend, &buf, &bufend, offset);
4735 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size;
4737 /* Building the symbols initializes the symbol index in the PDR's.
4738 Now we can swap out the PDR's. */
4739 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset);
4741 /* We don't use optimization symbols. */
4743 hdr->cbOptOffset = 0;
4745 /* Swap out the auxiliary type information. */
4746 hdr->cbAuxOffset = offset;
4747 offset = ecoff_build_aux (backend, &buf, &bufend, offset);
4748 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext);
4750 /* Copy out the local strings. */
4751 hdr->cbSsOffset = offset;
4752 offset = ecoff_build_ss (backend, &buf, &bufend, offset);
4753 hdr->issMax = offset - hdr->cbSsOffset;
4755 /* We don't use relative file descriptors. */
4757 hdr->cbRfdOffset = 0;
4759 /* Swap out the file descriptors. */
4760 hdr->cbFdOffset = offset;
4761 offset = ecoff_build_fdr (backend, &buf, &bufend, offset);
4762 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size;
4764 /* Set up the external symbols, which are handled by the BFD back
4767 hdr->cbSsExtOffset = 0;
4769 hdr->cbExtOffset = 0;
4772 know ((offset & (backend->debug_align - 1)) == 0);
4774 /* FIXME: This value should be determined from the .verstamp directive,
4775 with reasonable defaults in config files. */
4777 hdr->vstamp = 0x030b;
4779 hdr->vstamp = 0x020b;
4786 /* Allocate a cluster of pages. */
4788 #ifndef MALLOC_CHECK
4791 allocate_cluster (npages)
4792 unsigned long npages;
4794 register page_t *value = (page_t *) xmalloc (npages * PAGE_USIZE);
4798 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value);
4801 memset (value, 0, npages * PAGE_USIZE);
4807 static page_t *cluster_ptr = NULL;
4808 static unsigned long pages_left = 0;
4810 #endif /* MALLOC_CHECK */
4812 /* Allocate one page (which is initialized to 0). */
4817 #ifndef MALLOC_CHECK
4819 if (pages_left == 0)
4821 pages_left = MAX_CLUSTER_PAGES;
4822 cluster_ptr = allocate_cluster (pages_left);
4826 return cluster_ptr++;
4828 #else /* MALLOC_CHECK */
4832 ptr = xmalloc (PAGE_USIZE);
4833 memset (ptr, 0, PAGE_USIZE);
4836 #endif /* MALLOC_CHECK */
4839 /* Allocate scoping information. */
4844 register scope_t *ptr;
4845 static scope_t initial_scope;
4847 #ifndef MALLOC_CHECK
4849 ptr = alloc_counts[(int)alloc_type_scope].free_list.f_scope;
4850 if (ptr != (scope_t *) NULL)
4851 alloc_counts[ (int)alloc_type_scope ].free_list.f_scope = ptr->free;
4854 register int unallocated = alloc_counts[(int)alloc_type_scope].unallocated;
4855 register page_t *cur_page = alloc_counts[(int)alloc_type_scope].cur_page;
4857 if (unallocated == 0)
4859 unallocated = PAGE_SIZE / sizeof (scope_t);
4860 alloc_counts[(int)alloc_type_scope].cur_page = cur_page = allocate_page ();
4861 alloc_counts[(int)alloc_type_scope].total_pages++;
4864 ptr = &cur_page->scope[--unallocated];
4865 alloc_counts[(int)alloc_type_scope].unallocated = unallocated;
4870 ptr = (scope_t *) xmalloc (sizeof (scope_t));
4874 alloc_counts[(int)alloc_type_scope].total_alloc++;
4875 *ptr = initial_scope;
4879 /* Free scoping information. */
4885 alloc_counts[(int)alloc_type_scope].total_free++;
4887 #ifndef MALLOC_CHECK
4888 ptr->free = alloc_counts[(int)alloc_type_scope].free_list.f_scope;
4889 alloc_counts[(int)alloc_type_scope].free_list.f_scope = ptr;
4895 /* Allocate links for pages in a virtual array. */
4900 register vlinks_t *ptr;
4901 static vlinks_t initial_vlinks;
4903 #ifndef MALLOC_CHECK
4905 register int unallocated = alloc_counts[(int)alloc_type_vlinks].unallocated;
4906 register page_t *cur_page = alloc_counts[(int)alloc_type_vlinks].cur_page;
4908 if (unallocated == 0)
4910 unallocated = PAGE_SIZE / sizeof (vlinks_t);
4911 alloc_counts[(int)alloc_type_vlinks].cur_page = cur_page = allocate_page ();
4912 alloc_counts[(int)alloc_type_vlinks].total_pages++;
4915 ptr = &cur_page->vlinks[--unallocated];
4916 alloc_counts[(int)alloc_type_vlinks].unallocated = unallocated;
4920 ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t));
4924 alloc_counts[(int)alloc_type_vlinks].total_alloc++;
4925 *ptr = initial_vlinks;
4929 /* Allocate string hash buckets. */
4934 register shash_t *ptr;
4935 static shash_t initial_shash;
4937 #ifndef MALLOC_CHECK
4939 register int unallocated = alloc_counts[(int)alloc_type_shash].unallocated;
4940 register page_t *cur_page = alloc_counts[(int)alloc_type_shash].cur_page;
4942 if (unallocated == 0)
4944 unallocated = PAGE_SIZE / sizeof (shash_t);
4945 alloc_counts[(int)alloc_type_shash].cur_page = cur_page = allocate_page ();
4946 alloc_counts[(int)alloc_type_shash].total_pages++;
4949 ptr = &cur_page->shash[--unallocated];
4950 alloc_counts[(int)alloc_type_shash].unallocated = unallocated;
4954 ptr = (shash_t *) xmalloc (sizeof (shash_t));
4958 alloc_counts[(int)alloc_type_shash].total_alloc++;
4959 *ptr = initial_shash;
4963 /* Allocate type hash buckets. */
4968 register thash_t *ptr;
4969 static thash_t initial_thash;
4971 #ifndef MALLOC_CHECK
4973 register int unallocated = alloc_counts[(int)alloc_type_thash].unallocated;
4974 register page_t *cur_page = alloc_counts[(int)alloc_type_thash].cur_page;
4976 if (unallocated == 0)
4978 unallocated = PAGE_SIZE / sizeof (thash_t);
4979 alloc_counts[(int)alloc_type_thash].cur_page = cur_page = allocate_page ();
4980 alloc_counts[(int)alloc_type_thash].total_pages++;
4983 ptr = &cur_page->thash[--unallocated];
4984 alloc_counts[(int)alloc_type_thash].unallocated = unallocated;
4988 ptr = (thash_t *) xmalloc (sizeof (thash_t));
4992 alloc_counts[(int)alloc_type_thash].total_alloc++;
4993 *ptr = initial_thash;
4997 /* Allocate structure, union, or enum tag information. */
5002 register tag_t *ptr;
5003 static tag_t initial_tag;
5005 #ifndef MALLOC_CHECK
5007 ptr = alloc_counts[(int)alloc_type_tag].free_list.f_tag;
5008 if (ptr != (tag_t *) NULL)
5009 alloc_counts[(int)alloc_type_tag].free_list.f_tag = ptr->free;
5012 register int unallocated = alloc_counts[(int)alloc_type_tag].unallocated;
5013 register page_t *cur_page = alloc_counts[(int)alloc_type_tag].cur_page;
5015 if (unallocated == 0)
5017 unallocated = PAGE_SIZE / sizeof (tag_t);
5018 alloc_counts[(int)alloc_type_tag].cur_page = cur_page = allocate_page ();
5019 alloc_counts[(int)alloc_type_tag].total_pages++;
5022 ptr = &cur_page->tag[--unallocated];
5023 alloc_counts[(int)alloc_type_tag].unallocated = unallocated;
5028 ptr = (tag_t *) xmalloc (sizeof (tag_t));
5032 alloc_counts[(int)alloc_type_tag].total_alloc++;
5037 /* Free scoping information. */
5043 alloc_counts[(int)alloc_type_tag].total_free++;
5045 #ifndef MALLOC_CHECK
5046 ptr->free = alloc_counts[(int)alloc_type_tag].free_list.f_tag;
5047 alloc_counts[(int)alloc_type_tag].free_list.f_tag = ptr;
5053 /* Allocate forward reference to a yet unknown tag. */
5058 register forward_t *ptr;
5059 static forward_t initial_forward;
5061 #ifndef MALLOC_CHECK
5063 register int unallocated = alloc_counts[(int)alloc_type_forward].unallocated;
5064 register page_t *cur_page = alloc_counts[(int)alloc_type_forward].cur_page;
5066 if (unallocated == 0)
5068 unallocated = PAGE_SIZE / sizeof (forward_t);
5069 alloc_counts[(int)alloc_type_forward].cur_page = cur_page = allocate_page ();
5070 alloc_counts[(int)alloc_type_forward].total_pages++;
5073 ptr = &cur_page->forward[--unallocated];
5074 alloc_counts[(int)alloc_type_forward].unallocated = unallocated;
5078 ptr = (forward_t *) xmalloc (sizeof (forward_t));
5082 alloc_counts[(int)alloc_type_forward].total_alloc++;
5083 *ptr = initial_forward;
5087 /* Allocate head of type hash list. */
5092 register thead_t *ptr;
5093 static thead_t initial_thead;
5095 #ifndef MALLOC_CHECK
5097 ptr = alloc_counts[(int)alloc_type_thead].free_list.f_thead;
5098 if (ptr != (thead_t *) NULL)
5099 alloc_counts[ (int)alloc_type_thead ].free_list.f_thead = ptr->free;
5102 register int unallocated = alloc_counts[(int)alloc_type_thead].unallocated;
5103 register page_t *cur_page = alloc_counts[(int)alloc_type_thead].cur_page;
5105 if (unallocated == 0)
5107 unallocated = PAGE_SIZE / sizeof (thead_t);
5108 alloc_counts[(int)alloc_type_thead].cur_page = cur_page = allocate_page ();
5109 alloc_counts[(int)alloc_type_thead].total_pages++;
5112 ptr = &cur_page->thead[--unallocated];
5113 alloc_counts[(int)alloc_type_thead].unallocated = unallocated;
5118 ptr = (thead_t *) xmalloc (sizeof (thead_t));
5122 alloc_counts[(int)alloc_type_thead].total_alloc++;
5123 *ptr = initial_thead;
5127 /* Free scoping information. */
5133 alloc_counts[(int)alloc_type_thead].total_free++;
5135 #ifndef MALLOC_CHECK
5136 ptr->free = (thead_t *) alloc_counts[(int)alloc_type_thead].free_list.f_thead;
5137 alloc_counts[(int)alloc_type_thead].free_list.f_thead = ptr;
5143 static lineno_list_t *
5144 allocate_lineno_list ()
5146 register lineno_list_t *ptr;
5147 static lineno_list_t initial_lineno_list;
5149 #ifndef MALLOC_CHECK
5151 register int unallocated = alloc_counts[(int)alloc_type_lineno].unallocated;
5152 register page_t *cur_page = alloc_counts[(int)alloc_type_lineno].cur_page;
5154 if (unallocated == 0)
5156 unallocated = PAGE_SIZE / sizeof (lineno_list_t);
5157 alloc_counts[(int)alloc_type_lineno].cur_page = cur_page = allocate_page ();
5158 alloc_counts[(int)alloc_type_lineno].total_pages++;
5161 ptr = &cur_page->lineno[--unallocated];
5162 alloc_counts[(int)alloc_type_lineno].unallocated = unallocated;
5166 ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t));
5170 alloc_counts[(int)alloc_type_lineno].total_alloc++;
5171 *ptr = initial_lineno_list;
5176 ecoff_set_gp_prolog_size (sz)
5179 if (cur_proc_ptr == 0)
5182 cur_proc_ptr->pdr.gp_prologue = sz;
5183 if (cur_proc_ptr->pdr.gp_prologue != sz)
5185 as_warn ("GP prologue size exceeds field size, using 0 instead");
5186 cur_proc_ptr->pdr.gp_prologue = 0;
5189 cur_proc_ptr->pdr.gp_used = 1;
5193 generate_ecoff_stab (what, string, type, other, desc)
5200 efdr_t *save_file_ptr = cur_file_ptr;
5206 localsym_t *hold = NULL;
5208 /* We don't handle .stabd. */
5209 if (what != 's' && what != 'n')
5211 as_bad (".stab%c is not supported", what);
5215 /* We ignore the other field. */
5217 as_warn (".stab%c: ignoring non-zero other field", what);
5219 /* Make sure we have a current file. */
5220 if (cur_file_ptr == (efdr_t *) NULL)
5222 add_file ((const char *) NULL, 0, 1);
5223 save_file_ptr = cur_file_ptr;
5226 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
5228 if (stabs_seen == 0)
5231 /* Line number stabs are handled differently, since they have two
5232 values, the line number and the address of the label. We use the
5233 index field (aka desc) to hold the line number, and the value
5234 field to hold the address. The symbol type is st_Label, which
5235 should be different from the other stabs, so that gdb can
5237 if (type == N_SLINE)
5243 listing_source_line ((unsigned int) desc);
5246 dummy_symr.index = desc;
5247 if (dummy_symr.index != desc)
5249 as_warn ("Line number (%d) for .stab%c directive cannot fit in index field (20 bits)",
5254 sym = symbol_find_or_make ((char *)string);
5263 if (listing && (type == N_SO || type == N_SOL))
5264 listing_source_file (string);
5267 sym = symbol_find_or_make ((char *)string);
5271 indx = ECOFF_MARK_STAB (type);
5274 /* Don't store the stabs symbol we are creating as the type of the
5275 ECOFF symbol. We want to compute the type of the ECOFF symbol
5277 if (sym != (symbolS *) NULL)
5278 hold = sym->ecoff_symbol;
5280 (void) add_ecoff_symbol (string, st, sc, sym, (bfd_vma) 0, value, indx);
5282 if (sym != (symbolS *) NULL)
5283 sym->ecoff_symbol = hold;
5285 /* Restore normal file type. */
5286 cur_file_ptr = save_file_ptr;
5290 ecoff_no_current_file ()
5292 return cur_file_ptr == (efdr_t *) NULL;
5296 ecoff_generate_asm_lineno (filename, lineno)
5297 const char *filename;
5300 lineno_list_t *list;
5302 /* this potential can cause problem, when we start to see stab half the
5303 way thru the file */
5306 ecoff_generate_asm_line_stab(filename, lineno);
5309 if (current_stabs_filename == (char *)NULL || strcmp (current_stabs_filename, filename))
5311 add_file (filename, 0, 1);
5312 generate_asm_lineno = 1;
5315 list = allocate_lineno_list ();
5317 list->next = (lineno_list_t *) NULL;
5318 list->file = cur_file_ptr;
5319 list->proc = cur_proc_ptr;
5320 list->frag = frag_now;
5321 list->paddr = frag_now_fix ();
5322 list->lineno = lineno;
5324 /* A .loc directive will sometimes appear before a .ent directive,
5325 which means that cur_proc_ptr will be NULL here. Arrange to
5327 if (cur_proc_ptr == (proc_t *) NULL)
5331 pl = &noproc_lineno;
5332 while (*pl != (lineno_list_t *) NULL)
5338 *last_lineno_ptr = list;
5339 last_lineno_ptr = &list->next;
5343 static int line_label_cnt = 0;
5345 ecoff_generate_asm_line_stab (filename, lineno)
5351 if (strcmp (current_stabs_filename, filename))
5353 add_file (filename, 0, 1);
5354 generate_asm_lineno = 1;
5358 /* generate local label $LMnn */
5360 sprintf(ll, "$LM%d", line_label_cnt);
5363 /* generate stab for the line */
5364 generate_ecoff_stab ('n', ll, N_SLINE, 0, lineno);
5368 #endif /* ECOFF_DEBUGGING */