1 /* ECOFF debugging support.
2 Copyright (C) 1993 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
22 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
26 /* This file is compiled conditionally for those targets which use
27 ECOFF debugging information (e.g., MIPS ECOFF, MIPS ELF, Alpha
30 #ifdef ECOFF_DEBUGGING
32 #include "coff/internal.h"
33 #include "coff/symconst.h"
35 #include "aout/stab_gnu.h"
39 /* Why isn't this in coff/sym.h? */
40 #define ST_RFDESCAPE 0xfff
42 /* This file constructs the information used by the ECOFF debugging
43 format. It just builds a large block of data.
45 We support both ECOFF style debugging and stabs debugging (the
46 stabs symbols are encapsulated in ECOFF symbols). This should let
47 us handle anything the compiler might throw at us. */
49 /* Here is a brief description of the MIPS ECOFF symbol table, by
50 Michael Meissner. The MIPS symbol table has the following pieces:
56 +-- Dense number table
64 +-- Relative file descriptors
76 The symbolic header points to each of the other tables, and also
77 contains the number of entries. It also contains a magic number
78 and MIPS compiler version number, such as 2.0.
80 The auxiliary table is a series of 32 bit integers, that are
81 referenced as needed from the local symbol table. Unlike standard
82 COFF, the aux. information does not follow the symbol that uses
83 it, but rather is a separate table. In theory, this would allow
84 the MIPS compilers to collapse duplicate aux. entries, but I've not
85 noticed this happening with the 1.31 compiler suite. The different
86 types of aux. entries are:
88 1) dnLow: Low bound on array dimension.
90 2) dnHigh: High bound on array dimension.
92 3) isym: Index to the local symbol which is the start of the
93 function for the end of function first aux. entry.
95 4) width: Width of structures and bitfields.
97 5) count: Count of ranges for variant part.
99 6) rndx: A relative index into the symbol table. The relative
100 index field has two parts: rfd which is a pointer into the
101 relative file index table or ST_RFDESCAPE which says the next
102 aux. entry is the file number, and index: which is the pointer
103 into the local symbol within a given file table. This is for
104 things like references to types defined in another file.
106 7) Type information: This is like the COFF type bits, except it
107 is 32 bits instead of 16; they still have room to add new
108 basic types; and they can handle more than 6 levels of array,
109 pointer, function, etc. Each type information field contains
110 the following structure members:
112 a) fBitfield: a bit that says this is a bitfield, and the
113 size in bits follows as the next aux. entry.
115 b) continued: a bit that says the next aux. entry is a
116 continuation of the current type information (in case
117 there are more than 6 levels of array/ptr/function).
119 c) bt: an integer containing the base type before adding
120 array, pointer, function, etc. qualifiers. The
121 current base types that I have documentation for are:
124 btAdr -- address - integer same size as ptr
126 btUChar -- unsigned character
128 btUShort -- unsigned short
130 btUInt -- unsigned int
132 btULong -- unsigned long
133 btFloat -- float (real)
134 btDouble -- Double (real)
135 btStruct -- Structure (Record)
136 btUnion -- Union (variant)
138 btTypedef -- defined via a typedef isymRef
139 btRange -- subrange of int
141 btComplex -- fortran complex
142 btDComplex -- fortran double complex
143 btIndirect -- forward or unnamed typedef
144 btFixedDec -- Fixed Decimal
145 btFloatDec -- Float Decimal
146 btString -- Varying Length Character String
147 btBit -- Aligned Bit String
149 btVoid -- Void (MIPS cc revision >= 2.00)
151 d) tq0 - tq5: type qualifier fields as needed. The
152 current type qualifier fields I have documentation for
155 tqNil -- no more qualifiers
159 tqFar -- 8086 far pointers
163 The dense number table is used in the front ends, and disappears by
164 the time the .o is created.
166 With the 1.31 compiler suite, the optimization symbols don't seem
167 to be used as far as I can tell.
169 The linker is the first entity that creates the relative file
170 descriptor table, and I believe it is used so that the individual
171 file table pointers don't have to be rewritten when the objects are
172 merged together into the program file.
174 Unlike COFF, the basic symbol & string tables are split into
175 external and local symbols/strings. The relocation information
176 only goes off of the external symbol table, and the debug
177 information only goes off of the internal symbol table. The
178 external symbols can have links to an appropriate file index and
179 symbol within the file to give it the appropriate type information.
180 Because of this, the external symbols are actually larger than the
181 internal symbols (to contain the link information), and contain the
182 local symbol structure as a member, though this member is not the
183 first member of the external symbol structure (!). I suspect this
184 split is to make strip easier to deal with.
186 Each file table has offsets for where the line numbers, local
187 strings, local symbols, and procedure table starts from within the
188 global tables, and the indexs are reset to 0 for each of those
191 The procedure table contains the binary equivalents of the .ent
192 (start of the function address), .frame (what register is the
193 virtual frame pointer, constant offset from the register to obtain
194 the VFP, and what register holds the return address), .mask/.fmask
195 (bitmask of saved registers, and where the first register is stored
196 relative to the VFP) assembler directives. It also contains the
197 low and high bounds of the line numbers if debugging is turned on.
199 The line number table is a compressed form of the normal COFF line
200 table. Each line number entry is either 1 or 3 bytes long, and
201 contains a signed delta from the previous line, and an unsigned
202 count of the number of instructions this statement takes.
204 The local symbol table contains the following fields:
206 1) iss: index to the local string table giving the name of the
209 2) value: value of the symbol (address, register number, etc.).
211 3) st: symbol type. The current symbol types are:
213 stNil -- Nuthin' special
214 stGlobal -- external symbol
216 stParam -- procedure argument
217 stLocal -- local variable
219 stProc -- External Procedure
220 stBlock -- beginning of block
221 stEnd -- end (of anything)
222 stMember -- member (of anything)
223 stTypedef -- type definition
225 stRegReloc -- register relocation
226 stForward -- forwarding address
227 stStaticProc -- Static procedure
230 4) sc: storage class. The current storage classes are:
232 scText -- text symbol
233 scData -- initialized data symbol
234 scBss -- un-initialized data symbol
235 scRegister -- value of symbol is register number
236 scAbs -- value of symbol is absolute
237 scUndefined -- who knows?
238 scCdbLocal -- variable's value is IN se->va.??
239 scBits -- this is a bit field
240 scCdbSystem -- value is IN debugger's address space
241 scRegImage -- register value saved on stack
242 scInfo -- symbol contains debugger information
243 scUserStruct -- addr in struct user for current process
244 scSData -- load time only small data
245 scSBss -- load time only small common
246 scRData -- load time only read only data
247 scVar -- Var parameter (fortranpascal)
248 scCommon -- common variable
249 scSCommon -- small common
250 scVarRegister -- Var parameter in a register
251 scVariant -- Variant record
252 scSUndefined -- small undefined(external) data
253 scInit -- .init section symbol
255 5) index: pointer to a local symbol or aux. entry.
259 For the following program:
264 printf("Hello World!\n");
268 Mips-tdump produces the following information:
273 timestamp 645311799, Wed Jun 13 17:16:39 1990
274 symbolic header offset 284
275 symbolic header size 96
279 Symbolic header, magic number = 0x7009, vstamp = 1.31:
281 Info Offset Number Bytes
282 ==== ====== ====== =====
284 Line numbers 380 4 4 [13]
286 Procedures Tables 384 1 52
287 Local Symbols 436 16 192
288 Optimization Symbols 0 0 0
289 Auxiliary Symbols 628 39 156
290 Local Strings 784 80 80
291 External Strings 864 144 144
292 File Tables 1008 2 144
294 External Symbols 1152 20 320
298 Name index = 1 Readin = No
299 Merge = No Endian = LITTLE
300 Debug level = G2 Language = C
303 Info Start Number Size Offset
304 ==== ===== ====== ==== ======
305 Local strings 0 15 15 784
306 Local symbols 0 6 72 436
307 Line numbers 0 13 13 380
308 Optimization symbols 0 0 0 0
309 Procedures 0 1 52 384
310 Auxiliary symbols 0 14 56 628
311 Relative Files 0 0 0 0
313 There are 6 local symbols, starting at 436
315 Symbol# 0: "hello2.c"
318 Storage class = Text Index = 6
319 Symbol type = File Value = 0
325 Storage class = Text Index = 12
326 Symbol type = Proc Value = 0
331 Storage class = Text Index = 4
332 Symbol type = Block Value = 8
337 Storage class = Text Index = 2
338 Symbol type = End Value = 28
343 Storage class = Text Index = 1
344 Symbol type = End Value = 52
346 Symbol# 5: "hello2.c"
349 Storage class = Text Index = 0
350 Symbol type = End Value = 0
352 There are 14 auxiliary table entries, starting at 628.
354 * #0 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
355 * #1 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
356 * #2 8, [ 8/ 0], [ 2 0:0 0:0:0:0:0:0]
357 * #3 16, [ 16/ 0], [ 4 0:0 0:0:0:0:0:0]
358 * #4 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
359 * #5 32, [ 32/ 0], [ 8 0:0 0:0:0:0:0:0]
360 * #6 40, [ 40/ 0], [10 0:0 0:0:0:0:0:0]
361 * #7 44, [ 44/ 0], [11 0:0 0:0:0:0:0:0]
362 * #8 12, [ 12/ 0], [ 3 0:0 0:0:0:0:0:0]
363 * #9 20, [ 20/ 0], [ 5 0:0 0:0:0:0:0:0]
364 * #10 28, [ 28/ 0], [ 7 0:0 0:0:0:0:0:0]
365 * #11 36, [ 36/ 0], [ 9 0:0 0:0:0:0:0:0]
366 #12 5, [ 5/ 0], [ 1 1:0 0:0:0:0:0:0]
367 #13 24, [ 24/ 0], [ 6 0:0 0:0:0:0:0:0]
369 There are 1 procedure descriptor entries, starting at 0.
371 Procedure descriptor 0:
372 Name index = 10 Name = "main"
373 .mask 0x80000000,-4 .fmask 0x00000000,0
375 Opt. start = -1 Symbols start = 1
376 First line # = 3 Last line # = 6
377 Line Offset = 0 Address = 0x00000000
379 There are 4 bytes holding line numbers, starting at 380.
380 Line 3, delta 0, count 2
381 Line 4, delta 1, count 3
382 Line 5, delta 1, count 2
383 Line 6, delta 1, count 6
385 File #1, "/usr/include/stdio.h"
387 Name index = 1 Readin = No
388 Merge = Yes Endian = LITTLE
389 Debug level = G2 Language = C
392 Info Start Number Size Offset
393 ==== ===== ====== ==== ======
394 Local strings 15 65 65 799
395 Local symbols 6 10 120 508
396 Line numbers 0 0 0 380
397 Optimization symbols 0 0 0 0
399 Auxiliary symbols 14 25 100 684
400 Relative Files 0 0 0 0
402 There are 10 local symbols, starting at 442
404 Symbol# 0: "/usr/include/stdio.h"
407 Storage class = Text Index = 10
408 Symbol type = File Value = 0
413 Storage class = Info Index = 9
414 Symbol type = Block Value = 20
419 Storage class = Info Index = 4
420 Symbol type = Member Value = 0
425 Storage class = Info Index = 15
426 Symbol type = Member Value = 32
431 Storage class = Info Index = 16
432 Symbol type = Member Value = 64
437 Storage class = Info Index = 4
438 Symbol type = Member Value = 96
443 Storage class = Info Index = 3
444 Symbol type = Member Value = 128
449 Storage class = Info Index = 2
450 Symbol type = Member Value = 144
455 Storage class = Info Index = 1
456 Symbol type = End Value = 0
458 Symbol# 9: "/usr/include/stdio.h"
461 Storage class = Text Index = 0
462 Symbol type = End Value = 0
464 There are 25 auxiliary table entries, starting at 642.
466 * #14 -1, [4095/1048575], [63 1:1 f:f:f:f:f:f]
467 #15 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
468 #16 65544, [ 8/ 16], [ 2 0:0 1:0:0:0:0:0]
469 * #17 196656, [ 48/ 48], [12 0:0 3:0:0:0:0:0]
470 * #18 8191, [4095/ 1], [63 1:1 0:0:0:0:f:1]
471 * #19 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
472 * #20 20479, [4095/ 4], [63 1:1 0:0:0:0:f:4]
473 * #21 1, [ 1/ 0], [ 0 1:0 0:0:0:0:0:0]
474 * #22 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
475 * #23 2, [ 2/ 0], [ 0 0:1 0:0:0:0:0:0]
476 * #24 160, [ 160/ 0], [40 0:0 0:0:0:0:0:0]
477 * #25 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
478 * #26 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
479 * #27 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
480 * #28 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
481 * #29 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
482 * #30 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
483 * #31 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
484 * #32 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
485 * #33 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
486 * #34 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
487 * #35 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
488 * #36 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
489 * #37 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
490 * #38 0, [ 0/ 0], [ 0 0:0 0:0:0:0:0:0]
492 There are 0 procedure descriptor entries, starting at 1.
494 There are 20 external symbols, starting at 1152
497 Type = array [3 {160}] of struct _iobuf { ifd = 1, index = 1 }
498 String index = 0 Ifd = 1
499 Storage class = Nil Index = 17
500 Symbol type = Global Value = 60
503 String index = 5 Ifd = 1
504 Storage class = Nil Index = 1048575
505 Symbol type = Proc Value = 0
508 String index = 11 Ifd = 1
509 Storage class = Nil Index = 1048575
510 Symbol type = Proc Value = 0
513 String index = 18 Ifd = 1
514 Storage class = Nil Index = 1048575
515 Symbol type = Proc Value = 0
518 String index = 26 Ifd = 1
519 Storage class = Nil Index = 1048575
520 Symbol type = Proc Value = 0
523 String index = 32 Ifd = 1
524 Storage class = Nil Index = 1048575
525 Symbol type = Proc Value = 0
528 String index = 40 Ifd = 1
529 Storage class = Nil Index = 1048575
530 Symbol type = Proc Value = 0
533 String index = 46 Ifd = 1
534 Storage class = Nil Index = 1048575
535 Symbol type = Proc Value = 0
538 String index = 53 Ifd = 1
539 Storage class = Nil Index = 1048575
540 Symbol type = Proc Value = 0
542 Symbol# 9: "setbuffer"
543 String index = 60 Ifd = 1
544 Storage class = Nil Index = 1048575
545 Symbol type = Proc Value = 0
547 Symbol# 10: "setlinebuf"
548 String index = 70 Ifd = 1
549 Storage class = Nil Index = 1048575
550 Symbol type = Proc Value = 0
553 String index = 81 Ifd = 1
554 Storage class = Nil Index = 1048575
555 Symbol type = Proc Value = 0
558 String index = 87 Ifd = 1
559 Storage class = Nil Index = 1048575
560 Symbol type = Proc Value = 0
562 Symbol# 13: "ctermid"
563 String index = 92 Ifd = 1
564 Storage class = Nil Index = 1048575
565 Symbol type = Proc Value = 0
567 Symbol# 14: "cuserid"
568 String index = 100 Ifd = 1
569 Storage class = Nil Index = 1048575
570 Symbol type = Proc Value = 0
572 Symbol# 15: "tempnam"
573 String index = 108 Ifd = 1
574 Storage class = Nil Index = 1048575
575 Symbol type = Proc Value = 0
578 String index = 116 Ifd = 1
579 Storage class = Nil Index = 1048575
580 Symbol type = Proc Value = 0
582 Symbol# 17: "sprintf"
583 String index = 123 Ifd = 1
584 Storage class = Nil Index = 1048575
585 Symbol type = Proc Value = 0
589 String index = 131 Ifd = 0
590 Storage class = Text Index = 1
591 Symbol type = Proc Value = 0
594 String index = 136 Ifd = 0
595 Storage class = Undefined Index = 1048575
596 Symbol type = Proc Value = 0
598 The following auxiliary table entries were unused:
602 #3 16 0x00000010 short
604 #5 32 0x00000020 long
605 #6 40 0x00000028 float
606 #7 44 0x0000002c double
607 #8 12 0x0000000c unsigned char
608 #9 20 0x00000014 unsigned short
609 #10 28 0x0000001c unsigned int
610 #11 36 0x00000024 unsigned long
611 #14 0 0x00000000 void
612 #15 24 0x00000018 int
613 #19 32 0x00000020 long
614 #20 40 0x00000028 float
615 #21 44 0x0000002c double
616 #22 12 0x0000000c unsigned char
617 #23 20 0x00000014 unsigned short
618 #24 28 0x0000001c unsigned int
619 #25 36 0x00000024 unsigned long
620 #26 48 0x00000030 struct no name { ifd = -1, index = 1048575 }
623 /* Redefinition of of storage classes as an enumeration for better
627 sc_Nil = scNil, /* no storage class */
628 sc_Text = scText, /* text symbol */
629 sc_Data = scData, /* initialized data symbol */
630 sc_Bss = scBss, /* un-initialized data symbol */
631 sc_Register = scRegister, /* value of symbol is register number */
632 sc_Abs = scAbs, /* value of symbol is absolute */
633 sc_Undefined = scUndefined, /* who knows? */
634 sc_CdbLocal = scCdbLocal, /* variable's value is IN se->va.?? */
635 sc_Bits = scBits, /* this is a bit field */
636 sc_CdbSystem = scCdbSystem, /* value is IN CDB's address space */
637 sc_RegImage = scRegImage, /* register value saved on stack */
638 sc_Info = scInfo, /* symbol contains debugger information */
639 sc_UserStruct = scUserStruct, /* addr in struct user for current process */
640 sc_SData = scSData, /* load time only small data */
641 sc_SBss = scSBss, /* load time only small common */
642 sc_RData = scRData, /* load time only read only data */
643 sc_Var = scVar, /* Var parameter (fortran,pascal) */
644 sc_Common = scCommon, /* common variable */
645 sc_SCommon = scSCommon, /* small common */
646 sc_VarRegister = scVarRegister, /* Var parameter in a register */
647 sc_Variant = scVariant, /* Variant record */
648 sc_SUndefined = scSUndefined, /* small undefined(external) data */
649 sc_Init = scInit, /* .init section symbol */
650 sc_Max = scMax /* Max storage class+1 */
653 /* Redefinition of symbol type. */
656 st_Nil = stNil, /* Nuthin' special */
657 st_Global = stGlobal, /* external symbol */
658 st_Static = stStatic, /* static */
659 st_Param = stParam, /* procedure argument */
660 st_Local = stLocal, /* local variable */
661 st_Label = stLabel, /* label */
662 st_Proc = stProc, /* " " Procedure */
663 st_Block = stBlock, /* beginning of block */
664 st_End = stEnd, /* end (of anything) */
665 st_Member = stMember, /* member (of anything - struct/union/enum */
666 st_Typedef = stTypedef, /* type definition */
667 st_File = stFile, /* file name */
668 st_RegReloc = stRegReloc, /* register relocation */
669 st_Forward = stForward, /* forwarding address */
670 st_StaticProc = stStaticProc, /* load time only static procs */
671 st_Constant = stConstant, /* const */
672 st_Str = stStr, /* string */
673 st_Number = stNumber, /* pure number (ie. 4 NOR 2+2) */
674 st_Expr = stExpr, /* 2+2 vs. 4 */
675 st_Type = stType, /* post-coercion SER */
676 st_Max = stMax /* max type+1 */
679 /* Redefinition of type qualifiers. */
682 tq_Nil = tqNil, /* bt is what you see */
683 tq_Ptr = tqPtr, /* pointer */
684 tq_Proc = tqProc, /* procedure */
685 tq_Array = tqArray, /* duh */
686 tq_Far = tqFar, /* longer addressing - 8086/8 land */
687 tq_Vol = tqVol, /* volatile */
688 tq_Max = tqMax /* Max type qualifier+1 */
691 /* Redefinition of basic types. */
694 bt_Nil = btNil, /* undefined */
695 bt_Adr = btAdr, /* address - integer same size as pointer */
696 bt_Char = btChar, /* character */
697 bt_UChar = btUChar, /* unsigned character */
698 bt_Short = btShort, /* short */
699 bt_UShort = btUShort, /* unsigned short */
700 bt_Int = btInt, /* int */
701 bt_UInt = btUInt, /* unsigned int */
702 bt_Long = btLong, /* long */
703 bt_ULong = btULong, /* unsigned long */
704 bt_Float = btFloat, /* float (real) */
705 bt_Double = btDouble, /* Double (real) */
706 bt_Struct = btStruct, /* Structure (Record) */
707 bt_Union = btUnion, /* Union (variant) */
708 bt_Enum = btEnum, /* Enumerated */
709 bt_Typedef = btTypedef, /* defined via a typedef, isymRef points */
710 bt_Range = btRange, /* subrange of int */
711 bt_Set = btSet, /* pascal sets */
712 bt_Complex = btComplex, /* fortran complex */
713 bt_DComplex = btDComplex, /* fortran double complex */
714 bt_Indirect = btIndirect, /* forward or unnamed typedef */
715 bt_FixedDec = btFixedDec, /* Fixed Decimal */
716 bt_FloatDec = btFloatDec, /* Float Decimal */
717 bt_String = btString, /* Varying Length Character String */
718 bt_Bit = btBit, /* Aligned Bit String */
719 bt_Picture = btPicture, /* Picture */
720 bt_Void = btVoid, /* Void */
721 bt_Max = btMax /* Max basic type+1 */
726 /* States for whether to hash type or not. */
727 typedef enum hash_state {
728 hash_no = 0, /* don't hash type */
729 hash_yes = 1, /* ok to hash type, or use previous hash */
730 hash_record = 2 /* ok to record hash, but don't use prev. */
733 /* Types of different sized allocation requests. */
735 alloc_type_none, /* dummy value */
736 alloc_type_scope, /* nested scopes linked list */
737 alloc_type_vlinks, /* glue linking pages in varray */
738 alloc_type_shash, /* string hash element */
739 alloc_type_thash, /* type hash element */
740 alloc_type_tag, /* struct/union/tag element */
741 alloc_type_forward, /* element to hold unknown tag */
742 alloc_type_thead, /* head of type hash list */
743 alloc_type_varray, /* general varray allocation */
744 alloc_type_lineno, /* line number list */
745 alloc_type_last /* last+1 element for array bounds */
748 /* Types of auxiliary type information. */
750 aux_tir, /* TIR type information */
751 aux_rndx, /* relative index into symbol table */
752 aux_dnLow, /* low dimension */
753 aux_dnHigh, /* high dimension */
754 aux_isym, /* symbol table index (end of proc) */
755 aux_iss, /* index into string space (not used) */
756 aux_width, /* width for non-default sized struc fields */
757 aux_count /* count of ranges for variant arm */
760 /* Structures to provide n-number of virtual arrays, each of which can
761 grow linearly, and which are written in the object file as
762 sequential pages. On systems with a BSD malloc, the
763 MAX_CLUSTER_PAGES should be 1 less than a power of two, since
764 malloc adds it's overhead, and rounds up to the next power of 2.
765 Pages are linked together via a linked list.
767 If PAGE_SIZE is > 4096, the string length in the shash_t structure
768 can't be represented (assuming there are strings > 4096 bytes). */
771 #define PAGE_SIZE 4096 /* size of varray pages */
774 #define PAGE_USIZE ((unsigned long) PAGE_SIZE)
777 #ifndef MAX_CLUSTER_PAGES /* # pages to get from system */
778 #define MAX_CLUSTER_PAGES 63
781 /* Linked list connecting separate page allocations. */
782 typedef struct vlinks {
783 struct vlinks *prev; /* previous set of pages */
784 struct vlinks *next; /* next set of pages */
785 union page *datum; /* start of page */
786 unsigned long start_index; /* starting index # of page */
790 /* Virtual array header. */
791 typedef struct varray {
792 vlinks_t *first; /* first page link */
793 vlinks_t *last; /* last page link */
794 unsigned long num_allocated; /* # objects allocated */
795 unsigned short object_size; /* size in bytes of each object */
796 unsigned short objects_per_page; /* # objects that can fit on a page */
797 unsigned short objects_last_page; /* # objects allocated on last page */
801 #define OBJECTS_PER_PAGE(type) (PAGE_SIZE / sizeof (type))
803 #define OBJECTS_PER_PAGE(type) ((sizeof (type) > 1) ? 1 : PAGE_SIZE)
806 #define INIT_VARRAY(type) { /* macro to initialize a varray */ \
807 (vlinks_t *)0, /* first */ \
808 (vlinks_t *)0, /* last */ \
809 0, /* num_allocated */ \
810 sizeof (type), /* object_size */ \
811 OBJECTS_PER_PAGE (type), /* objects_per_page */ \
812 OBJECTS_PER_PAGE (type), /* objects_last_page */ \
816 /* Master type for indexes within the symbol table. */
817 typedef unsigned long symint_t;
820 /* Linked list support for nested scopes (file, block, structure, etc.). */
821 typedef struct scope {
822 struct scope *prev; /* previous scope level */
823 struct scope *free; /* free list pointer */
824 struct localsym *lsym; /* pointer to local symbol node */
825 st_t type; /* type of the node */
829 /* For a local symbol we store a gas symbol as well as the debugging
830 information we generate. The gas symbol will be NULL if this is
831 only a debugging symbol. */
832 typedef struct localsym {
833 const char *name; /* symbol name */
834 symbolS *as_sym; /* symbol as seen by gas */
835 struct efdr *file_ptr; /* file pointer */
836 struct ecoff_proc *proc_ptr; /* proc pointer */
837 struct localsym *begin_ptr; /* symbol at start of block */
838 struct ecoff_aux *index_ptr; /* index value to be filled in */
839 struct forward *forward_ref; /* forward references to this symbol */
840 long sym_index; /* final symbol index */
841 EXTR ecoff_sym; /* ECOFF debugging symbol */
845 /* For aux information we keep the type and the data. */
846 typedef struct ecoff_aux {
847 enum aux_type type; /* aux type */
848 AUXU data; /* aux data */
851 /* For a procedure we store the gas symbol as well as the PDR
852 debugging information. */
853 typedef struct ecoff_proc {
854 localsym_t *sym; /* associated symbol */
855 PDR pdr; /* ECOFF debugging info */
858 /* Number of proc_t structures allocated. */
859 static unsigned long proc_cnt;
862 /* Forward reference list for tags referenced, but not yet defined. */
863 typedef struct forward {
864 struct forward *next; /* next forward reference */
865 struct forward *free; /* free list pointer */
866 aux_t *ifd_ptr; /* pointer to store file index */
867 aux_t *index_ptr; /* pointer to store symbol index */
871 /* Linked list support for tags. The first tag in the list is always
872 the current tag for that block. */
874 struct tag *free; /* free list pointer */
875 struct shash *hash_ptr; /* pointer to the hash table head */
876 struct tag *same_name; /* tag with same name in outer scope */
877 struct tag *same_block; /* next tag defined in the same block. */
878 struct forward *forward_ref; /* list of forward references */
879 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
880 symint_t ifd; /* file # tag defined in */
881 localsym_t *sym; /* file's local symbols */
885 /* Head of a block's linked list of tags. */
886 typedef struct thead {
887 struct thead *prev; /* previous block */
888 struct thead *free; /* free list pointer */
889 struct tag *first_tag; /* first tag in block defined */
893 /* Union containing pointers to each the small structures which are freed up. */
894 typedef union small_free {
895 scope_t *f_scope; /* scope structure */
896 thead_t *f_thead; /* tag head structure */
897 tag_t *f_tag; /* tag element structure */
898 forward_t *f_forward; /* forward tag reference */
902 /* String hash table entry. */
904 typedef struct shash {
905 char *string; /* string we are hashing */
906 symint_t indx; /* index within string table */
907 EXTR *esym_ptr; /* global symbol pointer */
908 localsym_t *sym_ptr; /* local symbol pointer */
909 localsym_t *end_ptr; /* symbol pointer to end block */
910 tag_t *tag_ptr; /* tag pointer */
911 proc_t *proc_ptr; /* procedure descriptor pointer */
915 /* Type hash table support. The size of the hash table must fit
916 within a page with the other extended file descriptor information.
917 Because unique types which are hashed are fewer in number than
918 strings, we use a smaller hash value. */
923 #define THASH_SIZE 113
926 typedef struct thash {
927 struct thash *next; /* next hash value */
928 AUXU type; /* type we are hashing */
929 symint_t indx; /* index within string table */
933 /* Extended file descriptor that contains all of the support necessary
934 to add things to each file separately. */
935 typedef struct efdr {
936 FDR fdr; /* File header to be written out */
937 FDR *orig_fdr; /* original file header */
938 char *name; /* filename */
939 symint_t void_type; /* aux. pointer to 'void' type */
940 symint_t int_type; /* aux. pointer to 'int' type */
941 scope_t *cur_scope; /* current nested scopes */
942 symint_t file_index; /* current file number */
943 int nested_scopes; /* # nested scopes */
944 varray_t strings; /* local strings */
945 varray_t symbols; /* local symbols */
946 varray_t procs; /* procedures */
947 varray_t aux_syms; /* auxiliary symbols */
948 struct efdr *next_file; /* next file descriptor */
949 /* string/type hash tables */
950 struct hash_control *str_hash; /* string hash table */
951 thash_t *thash_head[THASH_SIZE];
954 /* Pre-initialized extended file structure. */
955 static const efdr_t init_file =
957 { /* FDR structure */
958 0, /* adr: memory address of beginning of file */
959 0, /* rss: file name (of source, if known) */
960 0, /* issBase: file's string space */
961 0, /* cbSs: number of bytes in the ss */
962 0, /* isymBase: beginning of symbols */
963 0, /* csym: count file's of symbols */
964 0, /* ilineBase: file's line symbols */
965 0, /* cline: count of file's line symbols */
966 0, /* ioptBase: file's optimization entries */
967 0, /* copt: count of file's optimization entries */
968 0, /* ipdFirst: start of procedures for this file */
969 0, /* cpd: count of procedures for this file */
970 0, /* iauxBase: file's auxiliary entries */
971 0, /* caux: count of file's auxiliary entries */
972 0, /* rfdBase: index into the file indirect table */
973 0, /* crfd: count file indirect entries */
974 langC, /* lang: language for this file */
975 0, /* fMerge: whether this file can be merged */
976 0, /* fReadin: true if read in (not just created) */
977 #ifdef TARGET_BYTES_BIG_ENDIAN
978 1, /* fBigendian: if 1, compiled on big endian machine */
980 0, /* fBigendian: if 1, compiled on big endian machine */
982 GLEVEL_2, /* glevel: level this file was compiled with */
983 0, /* reserved: reserved for future use */
984 0, /* cbLineOffset: byte offset from header for this file ln's */
985 0, /* cbLine: size of lines for this file */
988 (FDR *)0, /* orig_fdr: original file header pointer */
989 (char *)0, /* name: pointer to filename */
990 0, /* void_type: ptr to aux node for void type */
991 0, /* int_type: ptr to aux node for int type */
992 (scope_t *)0, /* cur_scope: current scope being processed */
993 0, /* file_index: current file # */
994 0, /* nested_scopes: # nested scopes */
995 INIT_VARRAY (char), /* strings: local string varray */
996 INIT_VARRAY (localsym_t), /* symbols: local symbols varray */
997 INIT_VARRAY (proc_t), /* procs: procedure varray */
998 INIT_VARRAY (aux_t), /* aux_syms: auxiliary symbols varray */
1000 (struct efdr *)0, /* next_file: next file structure */
1002 (struct hash_control *)0, /* str_hash: string hash table */
1003 { 0 }, /* thash_head: type hash table */
1007 static efdr_t *first_file; /* first file descriptor */
1008 static efdr_t **last_file_ptr = &first_file; /* file descriptor tail */
1011 /* Line number information is kept in a list until the assembly is
1013 typedef struct lineno_list {
1014 struct lineno_list *next; /* next element in list */
1015 efdr_t *file; /* file this line is in */
1016 proc_t *proc; /* procedure this line is in */
1017 fragS *frag; /* fragment this line number is in */
1018 unsigned long paddr; /* offset within fragment */
1019 long lineno; /* actual line number */
1022 static lineno_list_t *first_lineno;
1023 static lineno_list_t **last_lineno_ptr = &first_lineno;
1025 /* Sometimes there will be some .loc statements before a .ent. We
1026 keep them in this list so that we can fill in the procedure pointer
1027 after we see the .ent. */
1028 static lineno_list_t *noproc_lineno;
1030 /* Union of various things that are held in pages. */
1031 typedef union page {
1032 char byte [ PAGE_SIZE ];
1033 unsigned char ubyte [ PAGE_SIZE ];
1034 efdr_t file [ PAGE_SIZE / sizeof (efdr_t) ];
1035 FDR ofile [ PAGE_SIZE / sizeof (FDR) ];
1036 proc_t proc [ PAGE_SIZE / sizeof (proc_t) ];
1037 localsym_t sym [ PAGE_SIZE / sizeof (localsym_t) ];
1038 aux_t aux [ PAGE_SIZE / sizeof (aux_t) ];
1039 DNR dense [ PAGE_SIZE / sizeof (DNR) ];
1040 scope_t scope [ PAGE_SIZE / sizeof (scope_t) ];
1041 vlinks_t vlinks [ PAGE_SIZE / sizeof (vlinks_t) ];
1042 shash_t shash [ PAGE_SIZE / sizeof (shash_t) ];
1043 thash_t thash [ PAGE_SIZE / sizeof (thash_t) ];
1044 tag_t tag [ PAGE_SIZE / sizeof (tag_t) ];
1045 forward_t forward [ PAGE_SIZE / sizeof (forward_t) ];
1046 thead_t thead [ PAGE_SIZE / sizeof (thead_t) ];
1047 lineno_list_t lineno [ PAGE_SIZE / sizeof (lineno_list_t) ];
1051 /* Structure holding allocation information for small sized structures. */
1052 typedef struct alloc_info {
1053 char *alloc_name; /* name of this allocation type (must be first) */
1054 page_t *cur_page; /* current page being allocated from */
1055 small_free_t free_list; /* current free list if any */
1056 int unallocated; /* number of elements unallocated on page */
1057 int total_alloc; /* total number of allocations */
1058 int total_free; /* total number of frees */
1059 int total_pages; /* total number of pages allocated */
1063 /* Type information collected together. */
1064 typedef struct type_info {
1065 bt_t basic_type; /* basic type */
1066 int orig_type; /* original COFF-based type */
1067 int num_tq; /* # type qualifiers */
1068 int num_dims; /* # dimensions */
1069 int num_sizes; /* # sizes */
1070 int extra_sizes; /* # extra sizes not tied with dims */
1071 tag_t * tag_ptr; /* tag pointer */
1072 int bitfield; /* symbol is a bitfield */
1073 tq_t type_qualifiers[N_TQ]; /* type qualifiers (ptr, func, array)*/
1074 symint_t dimensions [N_TQ]; /* dimensions for each array */
1075 symint_t sizes [N_TQ+2]; /* sizes of each array slice + size of
1076 struct/union/enum + bitfield size */
1079 /* Pre-initialized type_info struct. */
1080 static const type_info_t type_info_init = {
1081 bt_Nil, /* basic type */
1082 T_NULL, /* original COFF-based type */
1083 0, /* # type qualifiers */
1084 0, /* # dimensions */
1086 0, /* sizes not tied with dims */
1087 NULL, /* ptr to tag */
1089 { /* type qualifiers */
1117 /* Global hash table for the tags table and global table for file
1120 static varray_t file_desc = INIT_VARRAY (efdr_t);
1122 static struct hash_control *tag_hash;
1124 /* Static types for int and void. Also, remember the last function's
1125 type (which is set up when we encounter the declaration for the
1126 function, and used when the end block for the function is emitted. */
1128 static type_info_t int_type_info;
1129 static type_info_t void_type_info;
1130 static type_info_t last_func_type_info;
1131 static symbolS *last_func_sym_value;
1134 /* Convert COFF basic type to ECOFF basic type. The T_NULL type
1135 really should use bt_Void, but this causes the current ecoff GDB to
1136 issue unsupported type messages, and the Ultrix 4.00 dbx (aka MIPS
1137 2.0) doesn't understand it, even though the compiler generates it.
1138 Maybe this will be fixed in 2.10 or 2.20 of the MIPS compiler
1139 suite, but for now go with what works.
1141 It would make sense for the .type and .scl directives to use the
1142 ECOFF numbers directly, rather than using the COFF numbers and
1143 mapping them. Unfortunately, this is historically what mips-tfile
1144 expects, and changing gcc now would be a considerable pain (the
1145 native compiler generates debugging information internally, rather
1146 than via the assembler, so it will never use .type or .scl). */
1148 static const bt_t map_coff_types[] = {
1149 bt_Nil, /* T_NULL */
1151 bt_Char, /* T_CHAR */
1152 bt_Short, /* T_SHORT */
1154 bt_Long, /* T_LONG */
1155 bt_Float, /* T_FLOAT */
1156 bt_Double, /* T_DOUBLE */
1157 bt_Struct, /* T_STRUCT */
1158 bt_Union, /* T_UNION */
1159 bt_Enum, /* T_ENUM */
1160 bt_Enum, /* T_MOE */
1161 bt_UChar, /* T_UCHAR */
1162 bt_UShort, /* T_USHORT */
1163 bt_UInt, /* T_UINT */
1164 bt_ULong /* T_ULONG */
1167 /* Convert COFF storage class to ECOFF storage class. */
1168 static const sc_t map_coff_storage[] = {
1169 sc_Nil, /* 0: C_NULL */
1170 sc_Abs, /* 1: C_AUTO auto var */
1171 sc_Undefined, /* 2: C_EXT external */
1172 sc_Data, /* 3: C_STAT static */
1173 sc_Register, /* 4: C_REG register */
1174 sc_Undefined, /* 5: C_EXTDEF ??? */
1175 sc_Text, /* 6: C_LABEL label */
1176 sc_Text, /* 7: C_ULABEL user label */
1177 sc_Info, /* 8: C_MOS member of struct */
1178 sc_Abs, /* 9: C_ARG argument */
1179 sc_Info, /* 10: C_STRTAG struct tag */
1180 sc_Info, /* 11: C_MOU member of union */
1181 sc_Info, /* 12: C_UNTAG union tag */
1182 sc_Info, /* 13: C_TPDEF typedef */
1183 sc_Data, /* 14: C_USTATIC ??? */
1184 sc_Info, /* 15: C_ENTAG enum tag */
1185 sc_Info, /* 16: C_MOE member of enum */
1186 sc_Register, /* 17: C_REGPARM register parameter */
1187 sc_Bits, /* 18; C_FIELD bitfield */
1269 sc_Text, /* 100: C_BLOCK block start/end */
1270 sc_Text, /* 101: C_FCN function start/end */
1271 sc_Info, /* 102: C_EOS end of struct/union/enum */
1272 sc_Nil, /* 103: C_FILE file start */
1273 sc_Nil, /* 104: C_LINE line number */
1274 sc_Nil, /* 105: C_ALIAS combined type info */
1275 sc_Nil, /* 106: C_HIDDEN ??? */
1278 /* Convert COFF storage class to ECOFF symbol type. */
1279 static const st_t map_coff_sym_type[] = {
1280 st_Nil, /* 0: C_NULL */
1281 st_Local, /* 1: C_AUTO auto var */
1282 st_Global, /* 2: C_EXT external */
1283 st_Static, /* 3: C_STAT static */
1284 st_Local, /* 4: C_REG register */
1285 st_Global, /* 5: C_EXTDEF ??? */
1286 st_Label, /* 6: C_LABEL label */
1287 st_Label, /* 7: C_ULABEL user label */
1288 st_Member, /* 8: C_MOS member of struct */
1289 st_Param, /* 9: C_ARG argument */
1290 st_Block, /* 10: C_STRTAG struct tag */
1291 st_Member, /* 11: C_MOU member of union */
1292 st_Block, /* 12: C_UNTAG union tag */
1293 st_Typedef, /* 13: C_TPDEF typedef */
1294 st_Static, /* 14: C_USTATIC ??? */
1295 st_Block, /* 15: C_ENTAG enum tag */
1296 st_Member, /* 16: C_MOE member of enum */
1297 st_Param, /* 17: C_REGPARM register parameter */
1298 st_Member, /* 18; C_FIELD bitfield */
1380 st_Block, /* 100: C_BLOCK block start/end */
1381 st_Proc, /* 101: C_FCN function start/end */
1382 st_End, /* 102: C_EOS end of struct/union/enum */
1383 st_File, /* 103: C_FILE file start */
1384 st_Nil, /* 104: C_LINE line number */
1385 st_Nil, /* 105: C_ALIAS combined type info */
1386 st_Nil, /* 106: C_HIDDEN ??? */
1390 /* Keep track of different sized allocation requests. */
1391 static alloc_info_t alloc_counts[ (int)alloc_type_last ];
1393 /* Record whether we have seen any debugging information. */
1394 int ecoff_debugging_seen = 0;
1396 /* Various statics. */
1397 static efdr_t *cur_file_ptr = (efdr_t *) 0; /* current file desc. header */
1398 static proc_t *cur_proc_ptr = (proc_t *) 0; /* current procedure header */
1399 static proc_t *first_proc_ptr = (proc_t *) 0; /* first procedure header */
1400 static thead_t *top_tag_head = (thead_t *) 0; /* top level tag head */
1401 static thead_t *cur_tag_head = (thead_t *) 0; /* current tag head */
1403 static int debug = 0; /* trace functions */
1405 static int stabs_seen = 0; /* != 0 if stabs have been seen */
1407 static int current_file_idx;
1408 static const char *current_stabs_filename;
1410 /* Pseudo symbol to use when putting stabs into the symbol table. */
1411 #ifndef STABS_SYMBOL
1412 #define STABS_SYMBOL "@stabs"
1415 static char stabs_symbol[] = STABS_SYMBOL;
1417 /* Prototypes for functions defined in this file. */
1419 static void add_varray_page PARAMS ((varray_t *vp));
1420 static symint_t add_string PARAMS ((varray_t *vp,
1421 struct hash_control *hash_tbl,
1423 shash_t **ret_hash));
1424 static localsym_t *add_ecoff_symbol PARAMS ((const char *str, st_t type,
1425 sc_t storage, symbolS *sym,
1428 static symint_t add_aux_sym_symint PARAMS ((symint_t aux_word));
1429 static symint_t add_aux_sym_rndx PARAMS ((int file_index,
1430 symint_t sym_index));
1431 static symint_t add_aux_sym_tir PARAMS ((type_info_t *t,
1433 thash_t **hash_tbl));
1434 static tag_t *get_tag PARAMS ((const char *tag, localsym_t *sym,
1436 static void add_unknown_tag PARAMS ((tag_t *ptag));
1437 static void add_procedure PARAMS ((char *func));
1438 static void add_file PARAMS ((const char *file_name, int indx));
1440 static char *sc_to_string PARAMS ((sc_t storage_class));
1441 static char *st_to_string PARAMS ((st_t symbol_type));
1443 static void mark_stabs PARAMS ((int));
1444 static char *ecoff_add_bytes PARAMS ((char **buf, char **bufend,
1445 char *bufptr, unsigned long need));
1446 static unsigned long ecoff_padding_adjust
1447 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1448 unsigned long offset, char **bufptrptr));
1449 static unsigned long ecoff_build_lineno
1450 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1451 unsigned long offset, long *linecntptr));
1452 static unsigned long ecoff_build_symbols
1453 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1454 unsigned long offset));
1455 static unsigned long ecoff_build_procs
1456 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1457 unsigned long offset));
1458 static unsigned long ecoff_build_aux
1459 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1460 unsigned long offset));
1461 static unsigned long ecoff_build_strings PARAMS ((char **buf, char **bufend,
1462 unsigned long offset,
1464 static unsigned long ecoff_build_ss
1465 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1466 unsigned long offset));
1467 static unsigned long ecoff_build_fdr
1468 PARAMS ((const struct ecoff_debug_swap *backend, char **buf, char **bufend,
1469 unsigned long offset));
1470 static void ecoff_setup_ext PARAMS ((void));
1471 static page_t *allocate_cluster PARAMS ((unsigned long npages));
1472 static page_t *allocate_page PARAMS ((void));
1473 static scope_t *allocate_scope PARAMS ((void));
1474 static void free_scope PARAMS ((scope_t *ptr));
1475 static vlinks_t *allocate_vlinks PARAMS ((void));
1476 static shash_t *allocate_shash PARAMS ((void));
1477 static thash_t *allocate_thash PARAMS ((void));
1478 static tag_t *allocate_tag PARAMS ((void));
1479 static void free_tag PARAMS ((tag_t *ptr));
1480 static forward_t *allocate_forward PARAMS ((void));
1481 static thead_t *allocate_thead PARAMS ((void));
1482 static void free_thead PARAMS ((thead_t *ptr));
1483 static lineno_list_t *allocate_lineno_list PARAMS ((void));
1484 static void generate_ecoff_stab PARAMS ((int, const char *, int, int, int));
1486 /* This function should be called when the assembler starts up. */
1489 ecoff_read_begin_hook ()
1491 tag_hash = hash_new ();
1492 top_tag_head = allocate_thead ();
1493 top_tag_head->first_tag = (tag_t *) NULL;
1494 top_tag_head->free = (thead_t *) NULL;
1495 top_tag_head->prev = cur_tag_head;
1496 cur_tag_head = top_tag_head;
1499 /* This function should be called when a symbol is created. */
1502 ecoff_symbol_new_hook (symbolP)
1505 /* Make sure that we have a file pointer, but only if we have seen a
1506 file. If we haven't seen a file, then this is a probably special
1507 symbol created by md_begin which may required special handling at
1508 some point. Creating a dummy file with a dummy name is certainly
1510 if (cur_file_ptr == (efdr_t *) NULL
1511 && seen_at_least_1_file ())
1512 add_file ((const char *) NULL, 0);
1513 symbolP->ecoff_file = cur_file_ptr;
1514 symbolP->ecoff_symbol = NULL;
1515 symbolP->ecoff_extern_size = 0;
1518 /* Add a page to a varray object. */
1521 add_varray_page (vp)
1522 varray_t *vp; /* varray to add page to */
1524 vlinks_t *new_links = allocate_vlinks ();
1527 if (vp->object_size > 1)
1528 new_links->datum = (page_t *) xcalloc (1, vp->object_size);
1531 new_links->datum = allocate_page ();
1533 alloc_counts[(int)alloc_type_varray].total_alloc++;
1534 alloc_counts[(int)alloc_type_varray].total_pages++;
1536 new_links->start_index = vp->num_allocated;
1537 vp->objects_last_page = 0;
1539 if (vp->first == (vlinks_t *) NULL) /* first allocation? */
1540 vp->first = vp->last = new_links;
1542 { /* 2nd or greater allocation */
1543 new_links->prev = vp->last;
1544 vp->last->next = new_links;
1545 vp->last = new_links;
1549 /* Add a string (and null pad) to one of the string tables. */
1552 add_string (vp, hash_tbl, str, ret_hash)
1553 varray_t *vp; /* string obstack */
1554 struct hash_control *hash_tbl; /* ptr to hash table */
1555 const char *str; /* string */
1556 shash_t **ret_hash; /* return hash pointer */
1558 register unsigned long len = strlen (str);
1559 register shash_t *hash_ptr;
1561 if (len >= PAGE_USIZE)
1562 as_fatal ("String too big (%lu bytes)", len);
1564 hash_ptr = (shash_t *) hash_find (hash_tbl, str);
1565 if (hash_ptr == (shash_t *) NULL)
1567 register const char *err;
1569 if (vp->objects_last_page + len >= PAGE_USIZE)
1572 ((vp->num_allocated + PAGE_USIZE - 1) / PAGE_USIZE) * PAGE_USIZE;
1573 add_varray_page (vp);
1576 hash_ptr = allocate_shash ();
1577 hash_ptr->indx = vp->num_allocated;
1579 hash_ptr->string = &vp->last->datum->byte[vp->objects_last_page];
1581 vp->objects_last_page += len + 1;
1582 vp->num_allocated += len + 1;
1584 strcpy (hash_ptr->string, str);
1586 err = hash_insert (hash_tbl, str, (char *) hash_ptr);
1588 as_fatal ("Inserting \"%s\" into string hash table: %s",
1592 if (ret_hash != (shash_t **) NULL)
1593 *ret_hash = hash_ptr;
1595 return hash_ptr->indx;
1598 /* Add debugging information for a symbol. */
1601 add_ecoff_symbol (str, type, storage, sym_value, value, indx)
1602 const char *str; /* symbol name */
1603 st_t type; /* symbol type */
1604 sc_t storage; /* storage class */
1605 symbolS *sym_value; /* associated symbol. */
1606 symint_t value; /* value of symbol */
1607 symint_t indx; /* index to local/aux. syms */
1610 register scope_t *pscope;
1611 register thead_t *ptag_head;
1612 register tag_t *ptag;
1613 register tag_t *ptag_next;
1614 register varray_t *vp;
1615 register int scope_delta = 0;
1616 shash_t *hash_ptr = (shash_t *) NULL;
1618 if (cur_file_ptr == (efdr_t *) NULL)
1619 as_fatal ("no current file pointer");
1621 vp = &cur_file_ptr->symbols;
1623 if (vp->objects_last_page == vp->objects_per_page)
1624 add_varray_page (vp);
1626 psym = &vp->last->datum->sym[ vp->objects_last_page++ ];
1628 if (str == (const char *) NULL && sym_value != (symbolS *) NULL)
1629 psym->name = S_GET_NAME (sym_value);
1632 psym->as_sym = sym_value;
1633 if (sym_value != (symbolS *) NULL)
1634 sym_value->ecoff_symbol = psym;
1635 psym->file_ptr = cur_file_ptr;
1636 psym->proc_ptr = cur_proc_ptr;
1637 psym->begin_ptr = (localsym_t *) NULL;
1638 psym->index_ptr = (aux_t *) NULL;
1639 psym->forward_ref = (forward_t *) NULL;
1640 psym->sym_index = -1;
1641 memset (&psym->ecoff_sym, 0, sizeof (EXTR));
1642 psym->ecoff_sym.asym.value = value;
1643 psym->ecoff_sym.asym.st = (unsigned) type;
1644 psym->ecoff_sym.asym.sc = (unsigned) storage;
1645 psym->ecoff_sym.asym.index = indx;
1647 /* If there is an associated symbol, we wait until the end of the
1648 assembly before deciding where to put the name (it may be just an
1649 external symbol). Otherwise, this is just a debugging symbol and
1650 the name should go with the current file. */
1651 if (sym_value == (symbolS *) NULL)
1652 psym->ecoff_sym.asym.iss = ((str == (const char *) NULL)
1654 : add_string (&cur_file_ptr->strings,
1655 cur_file_ptr->str_hash,
1659 ++vp->num_allocated;
1661 if (ECOFF_IS_STAB (&psym->ecoff_sym.asym))
1664 /* Save the symbol within the hash table if this is a static
1665 item, and it has a name. */
1666 if (hash_ptr != (shash_t *) NULL
1667 && (type == st_Global || type == st_Static || type == st_Label
1668 || type == st_Proc || type == st_StaticProc))
1669 hash_ptr->sym_ptr = psym;
1671 /* push or pop a scope if appropriate. */
1677 case st_File: /* beginning of file */
1678 case st_Proc: /* procedure */
1679 case st_StaticProc: /* static procedure */
1680 case st_Block: /* begin scope */
1681 pscope = allocate_scope ();
1682 pscope->prev = cur_file_ptr->cur_scope;
1683 pscope->lsym = psym;
1684 pscope->type = type;
1685 cur_file_ptr->cur_scope = pscope;
1687 if (type != st_File)
1690 /* For every block type except file, struct, union, or
1691 enumeration blocks, push a level on the tag stack. We omit
1692 file types, so that tags can span file boundaries. */
1693 if (type != st_File && storage != sc_Info)
1695 ptag_head = allocate_thead ();
1696 ptag_head->first_tag = 0;
1697 ptag_head->prev = cur_tag_head;
1698 cur_tag_head = ptag_head;
1703 pscope = cur_file_ptr->cur_scope;
1704 if (pscope == (scope_t *) NULL)
1705 as_fatal ("too many st_End's");
1708 st_t begin_type = (st_t) pscope->lsym->ecoff_sym.asym.st;
1710 psym->begin_ptr = pscope->lsym;
1712 if (begin_type != st_File)
1715 /* Except for file, structure, union, or enumeration end
1716 blocks remove all tags created within this scope. */
1717 if (begin_type != st_File && storage != sc_Info)
1719 ptag_head = cur_tag_head;
1720 cur_tag_head = ptag_head->prev;
1722 for (ptag = ptag_head->first_tag;
1723 ptag != (tag_t *) NULL;
1726 if (ptag->forward_ref != (forward_t *) NULL)
1727 add_unknown_tag (ptag);
1729 ptag_next = ptag->same_block;
1730 ptag->hash_ptr->tag_ptr = ptag->same_name;
1734 free_thead (ptag_head);
1737 cur_file_ptr->cur_scope = pscope->prev;
1739 /* block begin gets next sym #. This is set when we know
1740 the symbol index value. */
1742 /* Functions push two or more aux words as follows:
1743 1st word: index+1 of the end symbol (filled in later).
1744 2nd word: type of the function (plus any aux words needed).
1745 Also, tie the external pointer back to the function begin symbol. */
1746 if (begin_type != st_File && begin_type != st_Block)
1749 varray_t *svp = &cur_file_ptr->aux_syms;
1751 pscope->lsym->ecoff_sym.asym.index = add_aux_sym_symint (0);
1752 pscope->lsym->index_ptr =
1753 &svp->last->datum->aux[svp->objects_last_page - 1];
1754 ty = add_aux_sym_tir (&last_func_type_info,
1756 &cur_file_ptr->thash_head[0]);
1758 /* This seems to be unnecessary. I'm not even sure what it is
1759 * intended to do. It's from mips-tfile.
1760 * if (last_func_sym_value != (symbolS *) NULL)
1762 * last_func_sym_value->ifd = cur_file_ptr->file_index;
1763 * last_func_sym_value->index = ty;
1768 free_scope (pscope);
1772 cur_file_ptr->nested_scopes += scope_delta;
1775 if (debug && type != st_File
1776 && (debug > 2 || type == st_Block || type == st_End
1777 || type == st_Proc || type == st_StaticProc))
1779 char *sc_str = sc_to_string (storage);
1780 char *st_str = st_to_string (type);
1781 int depth = cur_file_ptr->nested_scopes + (scope_delta < 0);
1784 "\tlsym\tv= %10ld, depth= %2d, sc= %-12s",
1785 value, depth, sc_str);
1787 if (str_start && str_end_p1 - str_start > 0)
1788 fprintf (stderr, " st= %-11s name= %.*s\n", st_str, str_end_p1 - str_start, str_start);
1791 unsigned long len = strlen (st_str);
1792 fprintf (stderr, " st= %.*s\n", len-1, st_str);
1800 /* Add an auxiliary symbol (passing a symint). This is actually used
1801 for integral aux types, not just symints. */
1804 add_aux_sym_symint (aux_word)
1805 symint_t aux_word; /* auxiliary information word */
1807 register varray_t *vp;
1808 register aux_t *aux_ptr;
1810 if (cur_file_ptr == (efdr_t *) NULL)
1811 as_fatal ("no current file pointer");
1813 vp = &cur_file_ptr->aux_syms;
1815 if (vp->objects_last_page == vp->objects_per_page)
1816 add_varray_page (vp);
1818 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1819 aux_ptr->type = aux_isym;
1820 aux_ptr->data.isym = aux_word;
1822 return vp->num_allocated++;
1826 /* Add an auxiliary symbol (passing a file/symbol index combo). */
1829 add_aux_sym_rndx (file_index, sym_index)
1833 register varray_t *vp;
1834 register aux_t *aux_ptr;
1836 if (cur_file_ptr == (efdr_t *) NULL)
1837 as_fatal ("no current file pointer");
1839 vp = &cur_file_ptr->aux_syms;
1841 if (vp->objects_last_page == vp->objects_per_page)
1842 add_varray_page (vp);
1844 aux_ptr = &vp->last->datum->aux[vp->objects_last_page++];
1845 aux_ptr->type = aux_rndx;
1846 aux_ptr->data.rndx.rfd = file_index;
1847 aux_ptr->data.rndx.index = sym_index;
1849 return vp->num_allocated++;
1852 /* Add an auxiliary symbol (passing the basic type and possibly
1853 type qualifiers). */
1856 add_aux_sym_tir (t, state, hash_tbl)
1857 type_info_t *t; /* current type information */
1858 hash_state_t state; /* whether to hash type or not */
1859 thash_t **hash_tbl; /* pointer to hash table to use */
1861 register varray_t *vp;
1862 register aux_t *aux_ptr;
1863 static AUXU init_aux;
1868 if (cur_file_ptr == (efdr_t *) NULL)
1869 as_fatal ("no current file pointer");
1871 vp = &cur_file_ptr->aux_syms;
1874 aux.ti.bt = (int) t->basic_type;
1875 aux.ti.continued = 0;
1876 aux.ti.fBitfield = t->bitfield;
1878 aux.ti.tq0 = (int) t->type_qualifiers[0];
1879 aux.ti.tq1 = (int) t->type_qualifiers[1];
1880 aux.ti.tq2 = (int) t->type_qualifiers[2];
1881 aux.ti.tq3 = (int) t->type_qualifiers[3];
1882 aux.ti.tq4 = (int) t->type_qualifiers[4];
1883 aux.ti.tq5 = (int) t->type_qualifiers[5];
1886 /* For anything that adds additional information, we must not hash,
1887 so check here, and reset our state. */
1889 if (state != hash_no
1890 && (t->type_qualifiers[0] == tq_Array
1891 || t->type_qualifiers[1] == tq_Array
1892 || t->type_qualifiers[2] == tq_Array
1893 || t->type_qualifiers[3] == tq_Array
1894 || t->type_qualifiers[4] == tq_Array
1895 || t->type_qualifiers[5] == tq_Array
1896 || t->basic_type == bt_Struct
1897 || t->basic_type == bt_Union
1898 || t->basic_type == bt_Enum
1900 || t->num_dims > 0))
1903 /* See if we can hash this type, and save some space, but some types
1904 can't be hashed (because they contain arrays or continuations),
1905 and others can be put into the hash list, but cannot use existing
1906 types because other aux entries precede this one. */
1908 if (state != hash_no)
1910 register thash_t *hash_ptr;
1911 register symint_t hi;
1913 hi = aux.isym & ((1 << HASHBITS) - 1);
1916 for (hash_ptr = hash_tbl[hi];
1917 hash_ptr != (thash_t *)0;
1918 hash_ptr = hash_ptr->next)
1920 if (aux.isym == hash_ptr->type.isym)
1924 if (hash_ptr != (thash_t *) NULL && state == hash_yes)
1925 return hash_ptr->indx;
1927 if (hash_ptr == (thash_t *) NULL)
1929 hash_ptr = allocate_thash ();
1930 hash_ptr->next = hash_tbl[hi];
1931 hash_ptr->type = aux;
1932 hash_ptr->indx = vp->num_allocated;
1933 hash_tbl[hi] = hash_ptr;
1937 /* Everything is set up, add the aux symbol. */
1938 if (vp->objects_last_page == vp->objects_per_page)
1939 add_varray_page (vp);
1941 aux_ptr = &vp->last->datum->aux[ vp->objects_last_page++ ];
1942 aux_ptr->type = aux_tir;
1943 aux_ptr->data = aux;
1945 ret = vp->num_allocated++;
1947 /* Add bitfield length if it exists.
1949 NOTE: Mips documentation claims bitfield goes at the end of the
1950 AUX record, but the DECstation compiler emits it here.
1951 (This would only make a difference for enum bitfields.)
1953 Also note: We use the last size given since gcc may emit 2
1954 for an enum bitfield. */
1957 (void) add_aux_sym_symint ((symint_t)t->sizes[t->num_sizes-1]);
1960 /* Add tag information if needed. Structure, union, and enum
1961 references add 2 aux symbols: a [file index, symbol index]
1962 pointer to the structure type, and the current file index. */
1964 if (t->basic_type == bt_Struct
1965 || t->basic_type == bt_Union
1966 || t->basic_type == bt_Enum)
1968 register symint_t file_index = t->tag_ptr->ifd;
1969 register localsym_t *sym = t->tag_ptr->sym;
1970 register forward_t *forward_ref = allocate_forward ();
1972 if (sym != (localsym_t *) NULL)
1974 forward_ref->next = sym->forward_ref;
1975 sym->forward_ref = forward_ref;
1979 forward_ref->next = t->tag_ptr->forward_ref;
1980 t->tag_ptr->forward_ref = forward_ref;
1983 (void) add_aux_sym_rndx (ST_RFDESCAPE, indexNil);
1984 forward_ref->index_ptr
1985 = &vp->last->datum->aux[ vp->objects_last_page - 1];
1987 (void) add_aux_sym_symint (file_index);
1988 forward_ref->ifd_ptr
1989 = &vp->last->datum->aux[ vp->objects_last_page - 1];
1992 /* Add information about array bounds if they exist. */
1993 for (i = 0; i < t->num_dims; i++)
1995 (void) add_aux_sym_rndx (ST_RFDESCAPE,
1996 cur_file_ptr->int_type);
1998 (void) add_aux_sym_symint (cur_file_ptr->file_index); /* file index*/
1999 (void) add_aux_sym_symint ((symint_t) 0); /* low bound */
2000 (void) add_aux_sym_symint (t->dimensions[i] - 1); /* high bound*/
2001 (void) add_aux_sym_symint ((t->dimensions[i] == 0) /* stride */
2003 : (t->sizes[i] * 8) / t->dimensions[i]);
2006 /* NOTE: Mips documentation claims that the bitfield width goes here.
2007 But it needs to be emitted earlier. */
2012 /* Add a tag to the tag table (unless it already exists). */
2015 get_tag (tag, sym, basic_type)
2016 const char *tag; /* tag name */
2017 localsym_t *sym; /* tag start block */
2018 bt_t basic_type; /* bt_Struct, bt_Union, or bt_Enum */
2024 if (cur_file_ptr == (efdr_t *) NULL)
2025 as_fatal ("no current file pointer");
2027 hash_ptr = (shash_t *) hash_find (tag_hash, tag);
2029 if (hash_ptr != (shash_t *) NULL
2030 && hash_ptr->tag_ptr != (tag_t *) NULL)
2032 tag_ptr = hash_ptr->tag_ptr;
2033 if (sym != (localsym_t *) NULL)
2035 tag_ptr->basic_type = basic_type;
2036 tag_ptr->ifd = cur_file_ptr->file_index;
2042 if (hash_ptr == (shash_t *) NULL)
2046 perm = xmalloc ((unsigned long) (strlen (tag) + 1));
2048 hash_ptr = allocate_shash ();
2049 err = hash_insert (tag_hash, perm, (char *) hash_ptr);
2051 as_fatal ("Inserting \"%s\" into tag hash table: %s",
2053 hash_ptr->string = perm;
2056 tag_ptr = allocate_tag ();
2057 tag_ptr->forward_ref = (forward_t *) NULL;
2058 tag_ptr->hash_ptr = hash_ptr;
2059 tag_ptr->same_name = hash_ptr->tag_ptr;
2060 tag_ptr->basic_type = basic_type;
2062 tag_ptr->ifd = ((sym == (localsym_t *) NULL)
2064 : cur_file_ptr->file_index);
2065 tag_ptr->same_block = cur_tag_head->first_tag;
2067 cur_tag_head->first_tag = tag_ptr;
2068 hash_ptr->tag_ptr = tag_ptr;
2073 /* Add an unknown {struct, union, enum} tag. */
2076 add_unknown_tag (ptag)
2077 tag_t *ptag; /* pointer to tag information */
2079 shash_t *hash_ptr = ptag->hash_ptr;
2080 char *name = hash_ptr->string;
2087 char *agg_type = "{unknown aggregate type}";
2088 switch (ptag->basic_type)
2090 case bt_Struct: agg_type = "struct"; break;
2091 case bt_Union: agg_type = "union"; break;
2092 case bt_Enum: agg_type = "enum"; break;
2096 fprintf (stderr, "unknown %s %.*s found\n", agg_type,
2097 hash_ptr->len, name_start);
2101 sym = add_ecoff_symbol (name,
2108 (void) add_ecoff_symbol (name,
2115 for (pf = &sym->forward_ref; *pf != (forward_t *) NULL; pf = &(*pf)->next)
2117 *pf = ptag->forward_ref;
2120 /* Add a procedure to the current file's list of procedures, and record
2121 this is the current procedure. */
2124 add_procedure (func)
2125 char *func; /* func name */
2127 register varray_t *vp;
2128 register proc_t *new_proc_ptr;
2132 fputc ('\n', stderr);
2135 if (cur_file_ptr == (efdr_t *) NULL)
2136 as_fatal ("no current file pointer");
2138 vp = &cur_file_ptr->procs;
2140 if (vp->objects_last_page == vp->objects_per_page)
2141 add_varray_page (vp);
2143 cur_proc_ptr = new_proc_ptr = &vp->last->datum->proc[vp->objects_last_page++];
2145 if (first_proc_ptr == (proc_t *) NULL)
2146 first_proc_ptr = new_proc_ptr;
2148 vp->num_allocated++;
2150 new_proc_ptr->pdr.isym = -1;
2151 new_proc_ptr->pdr.iline = -1;
2152 new_proc_ptr->pdr.lnLow = -1;
2153 new_proc_ptr->pdr.lnHigh = -1;
2155 /* Push the start of the function. */
2156 new_proc_ptr->sym = add_ecoff_symbol ((const char *) NULL, st_Proc, sc_Text,
2157 symbol_find_or_make (func),
2158 (symint_t) 0, (symint_t) 0);
2162 /* Fill in the linenos preceding the .ent, if any. */
2163 if (noproc_lineno != (lineno_list_t *) NULL)
2167 for (l = noproc_lineno; l != (lineno_list_t *) NULL; l = l->next)
2168 l->proc = new_proc_ptr;
2169 *last_lineno_ptr = noproc_lineno;
2170 while (*last_lineno_ptr != NULL)
2171 last_lineno_ptr = &(*last_lineno_ptr)->next;
2172 noproc_lineno = (lineno_list_t *) NULL;
2176 /* Add a new filename, and set up all of the file relative
2177 virtual arrays (strings, symbols, aux syms, etc.). Record
2178 where the current file structure lives. */
2181 add_file (file_name, indx)
2182 const char *file_name; /* file name */
2185 register int first_ch;
2186 register efdr_t *fil_ptr;
2190 fprintf (stderr, "\tfile\t%.*s\n", len, file_start);
2193 /* If the file name is NULL, then no .file symbol appeared, and we
2194 want to use the actual file name. */
2195 if (file_name == (const char *) NULL)
2199 if (first_file != (efdr_t *) NULL)
2200 as_fatal ("fake .file after real one");
2201 as_where (&file, (unsigned int *) NULL);
2202 file_name = (const char *) file;
2204 if (! symbol_table_frozen)
2205 generate_asm_lineno = 1;
2208 generate_asm_lineno = 0;
2212 listing_source_file (file_name);
2215 current_stabs_filename = file_name;
2217 /* If we're creating stabs, then we don't actually make a new FDR.
2218 Instead, we just create a stabs symbol. */
2221 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2222 symbol_new ("L0\001", now_seg,
2223 (valueT) frag_now_fix (),
2225 0, ECOFF_MARK_STAB (N_SOL));
2229 first_ch = *file_name;
2231 /* See if the file has already been created. */
2232 for (fil_ptr = first_file;
2233 fil_ptr != (efdr_t *) NULL;
2234 fil_ptr = fil_ptr->next_file)
2236 if (first_ch == fil_ptr->name[0]
2237 && strcmp (file_name, fil_ptr->name) == 0)
2239 cur_file_ptr = fil_ptr;
2244 /* If this is a new file, create it. */
2245 if (fil_ptr == (efdr_t *) NULL)
2247 if (file_desc.objects_last_page == file_desc.objects_per_page)
2248 add_varray_page (&file_desc);
2250 fil_ptr = cur_file_ptr =
2251 &file_desc.last->datum->file[file_desc.objects_last_page++];
2252 *fil_ptr = init_file;
2254 fil_ptr->file_index = current_file_idx++;
2255 ++file_desc.num_allocated;
2257 /* Allocate the string hash table. */
2258 fil_ptr->str_hash = hash_new ();
2260 /* Make sure 0 byte in string table is null */
2261 add_string (&fil_ptr->strings,
2266 if (strlen (file_name) > PAGE_USIZE - 2)
2267 as_fatal ("Filename goes over one page boundary.");
2269 /* Push the start of the filename. We assume that the filename
2270 will be stored at string offset 1. */
2271 (void) add_ecoff_symbol (file_name, st_File, sc_Text,
2273 (symint_t) 0, (symint_t) 0);
2274 fil_ptr->fdr.rss = 1;
2275 fil_ptr->name = &fil_ptr->strings.last->datum->byte[1];
2277 /* Update the linked list of file descriptors. */
2278 *last_file_ptr = fil_ptr;
2279 last_file_ptr = &fil_ptr->next_file;
2281 /* Add void & int types to the file (void should be first to catch
2282 errant 0's within the index fields). */
2283 fil_ptr->void_type = add_aux_sym_tir (&void_type_info,
2285 &cur_file_ptr->thash_head[0]);
2287 fil_ptr->int_type = add_aux_sym_tir (&int_type_info,
2289 &cur_file_ptr->thash_head[0]);
2290 /* gas used to have a bug that if the file does not have any
2291 symbol, it either will abort or will not build the file,
2292 the following is to get around that problem. ---kung*/
2294 if (generate_asm_lineno)
2297 (void) add_ecoff_symbol (file_name, st_Nil, sc_Nil,
2298 symbol_new ("L0\001", now_seg,
2299 (valueT) frag_now_fix (),
2301 0, ECOFF_MARK_STAB (N_SO));
2302 (void) add_ecoff_symbol ("void:t1=1", st_Nil, sc_Nil,
2303 (symbolS *) NULL, 0,
2304 ECOFF_MARK_STAB (N_LSYM));
2312 /* Convert storage class to string. */
2315 sc_to_string(storage_class)
2318 switch(storage_class)
2320 case sc_Nil: return "Nil,";
2321 case sc_Text: return "Text,";
2322 case sc_Data: return "Data,";
2323 case sc_Bss: return "Bss,";
2324 case sc_Register: return "Register,";
2325 case sc_Abs: return "Abs,";
2326 case sc_Undefined: return "Undefined,";
2327 case sc_CdbLocal: return "CdbLocal,";
2328 case sc_Bits: return "Bits,";
2329 case sc_CdbSystem: return "CdbSystem,";
2330 case sc_RegImage: return "RegImage,";
2331 case sc_Info: return "Info,";
2332 case sc_UserStruct: return "UserStruct,";
2333 case sc_SData: return "SData,";
2334 case sc_SBss: return "SBss,";
2335 case sc_RData: return "RData,";
2336 case sc_Var: return "Var,";
2337 case sc_Common: return "Common,";
2338 case sc_SCommon: return "SCommon,";
2339 case sc_VarRegister: return "VarRegister,";
2340 case sc_Variant: return "Variant,";
2341 case sc_SUndefined: return "SUndefined,";
2342 case sc_Init: return "Init,";
2343 case sc_Max: return "Max,";
2353 /* Convert symbol type to string. */
2356 st_to_string(symbol_type)
2361 case st_Nil: return "Nil,";
2362 case st_Global: return "Global,";
2363 case st_Static: return "Static,";
2364 case st_Param: return "Param,";
2365 case st_Local: return "Local,";
2366 case st_Label: return "Label,";
2367 case st_Proc: return "Proc,";
2368 case st_Block: return "Block,";
2369 case st_End: return "End,";
2370 case st_Member: return "Member,";
2371 case st_Typedef: return "Typedef,";
2372 case st_File: return "File,";
2373 case st_RegReloc: return "RegReloc,";
2374 case st_Forward: return "Forward,";
2375 case st_StaticProc: return "StaticProc,";
2376 case st_Constant: return "Constant,";
2377 case st_Str: return "String,";
2378 case st_Number: return "Number,";
2379 case st_Expr: return "Expr,";
2380 case st_Type: return "Type,";
2381 case st_Max: return "Max,";
2389 /* Parse .begin directives which have a label as the first argument
2390 which gives the location of the start of the block. */
2393 ecoff_directive_begin (ignore)
2399 if (cur_file_ptr == (efdr_t *) NULL)
2401 as_warn (".begin directive without a preceding .file directive");
2402 demand_empty_rest_of_line ();
2406 if (cur_proc_ptr == (proc_t *) NULL)
2408 as_warn (".begin directive without a preceding .ent directive");
2409 demand_empty_rest_of_line ();
2413 name = input_line_pointer;
2414 name_end = get_symbol_end ();
2416 (void) add_ecoff_symbol ((const char *) NULL, st_Block, sc_Text,
2417 symbol_find_or_make (name),
2418 (symint_t) 0, (symint_t) 0);
2420 *input_line_pointer = name_end;
2422 /* The line number follows, but we don't use it. */
2423 (void) get_absolute_expression ();
2424 demand_empty_rest_of_line ();
2427 /* Parse .bend directives which have a label as the first argument
2428 which gives the location of the end of the block. */
2431 ecoff_directive_bend (ignore)
2438 if (cur_file_ptr == (efdr_t *) NULL)
2440 as_warn (".bend directive without a preceding .file directive");
2441 demand_empty_rest_of_line ();
2445 if (cur_proc_ptr == (proc_t *) NULL)
2447 as_warn (".bend directive without a preceding .ent directive");
2448 demand_empty_rest_of_line ();
2452 name = input_line_pointer;
2453 name_end = get_symbol_end ();
2455 /* The value is the distance between the .bend directive and the
2456 corresponding symbol. We fill in the offset when we write out
2458 endsym = symbol_find (name);
2459 if (endsym == (symbolS *) NULL)
2460 as_warn (".bend directive names unknown symbol");
2462 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text, endsym,
2463 (symint_t) 0, (symint_t) 0);
2465 *input_line_pointer = name_end;
2467 /* The line number follows, but we don't use it. */
2468 (void) get_absolute_expression ();
2469 demand_empty_rest_of_line ();
2472 /* COFF debugging information is provided as a series of directives
2473 (.def, .scl, etc.). We build up information as we read the
2474 directives in the following static variables, and file it away when
2475 we reach the .endef directive. */
2476 static char *coff_sym_name;
2477 static type_info_t coff_type;
2478 static sc_t coff_storage_class;
2479 static st_t coff_symbol_typ;
2480 static int coff_is_function;
2481 static char *coff_tag;
2482 static valueT coff_value;
2483 symbolS *coff_sym_value;
2484 static int coff_inside_enumeration;
2486 /* Handle a .def directive: start defining a symbol. */
2489 ecoff_directive_def (ignore)
2495 ecoff_debugging_seen = 1;
2499 name = input_line_pointer;
2500 name_end = get_symbol_end ();
2502 if (coff_sym_name != (char *) NULL)
2503 as_warn (".def pseudo-op used inside of .def/.endef; ignored");
2504 else if (*name == '\0')
2505 as_warn ("Empty symbol name in .def; ignored");
2508 if (coff_sym_name != (char *) NULL)
2509 free (coff_sym_name);
2510 if (coff_tag != (char *) NULL)
2512 coff_sym_name = (char *) xmalloc ((unsigned long) (strlen (name) + 1));
2513 strcpy (coff_sym_name, name);
2514 coff_type = type_info_init;
2515 coff_storage_class = sc_Nil;
2516 coff_symbol_typ = st_Nil;
2517 coff_is_function = 0;
2518 coff_tag = (char *) NULL;
2520 coff_sym_value = (symbolS *) NULL;
2523 *input_line_pointer = name_end;
2525 demand_empty_rest_of_line ();
2528 /* Handle a .dim directive, used to give dimensions for an array. The
2529 arguments are comma separated numbers. mips-tfile assumes that
2530 there will not be more than 6 dimensions, and gdb won't read any
2531 more than that anyhow, so I will also make that assumption. */
2534 ecoff_directive_dim (ignore)
2540 if (coff_sym_name == (char *) NULL)
2542 as_warn (".dim pseudo-op used outside of .def/.endef; ignored");
2543 demand_empty_rest_of_line ();
2547 for (i = 0; i < N_TQ; i++)
2550 dimens[i] = get_absolute_expression ();
2551 if (*input_line_pointer == ',')
2552 ++input_line_pointer;
2555 if (*input_line_pointer != '\n'
2556 && *input_line_pointer != ';')
2557 as_warn ("Badly formed .dim directive");
2565 /* The dimensions are stored away in reverse order. */
2568 if (coff_type.num_dims >= N_TQ)
2570 as_warn ("Too many .dim entries");
2573 coff_type.dimensions[coff_type.num_dims] = dimens[i];
2574 ++coff_type.num_dims;
2577 demand_empty_rest_of_line ();
2580 /* Handle a .scl directive, which sets the COFF storage class of the
2584 ecoff_directive_scl (ignore)
2589 if (coff_sym_name == (char *) NULL)
2591 as_warn (".scl pseudo-op used outside of .def/.endef; ignored");
2592 demand_empty_rest_of_line ();
2596 val = get_absolute_expression ();
2598 coff_symbol_typ = map_coff_sym_type[val];
2599 coff_storage_class = map_coff_storage[val];
2601 demand_empty_rest_of_line ();
2604 /* Handle a .size directive. For some reason mips-tfile.c thinks that
2605 .size can have multiple arguments. We humor it, although gcc will
2606 never generate more than one argument. */
2609 ecoff_directive_size (ignore)
2615 if (coff_sym_name == (char *) NULL)
2617 as_warn (".size pseudo-op used outside of .def/.endef; ignored");
2618 demand_empty_rest_of_line ();
2622 for (i = 0; i < N_TQ; i++)
2625 sizes[i] = get_absolute_expression ();
2626 if (*input_line_pointer == ',')
2627 ++input_line_pointer;
2630 if (*input_line_pointer != '\n'
2631 && *input_line_pointer != ';')
2632 as_warn ("Badly formed .size directive");
2640 /* The sizes are stored away in reverse order. */
2643 if (coff_type.num_sizes >= N_TQ)
2645 as_warn ("Too many .size entries");
2648 coff_type.sizes[coff_type.num_sizes] = sizes[i];
2649 ++coff_type.num_sizes;
2652 demand_empty_rest_of_line ();
2655 /* Handle the .type directive, which gives the COFF type of the
2659 ecoff_directive_type (ignore)
2666 if (coff_sym_name == (char *) NULL)
2668 as_warn (".type pseudo-op used outside of .def/.endef; ignored");
2669 demand_empty_rest_of_line ();
2673 val = get_absolute_expression ();
2675 coff_type.orig_type = BTYPE (val);
2676 coff_type.basic_type = map_coff_types[coff_type.orig_type];
2678 tq_ptr = &coff_type.type_qualifiers[N_TQ];
2679 while (val &~ N_BTMASK)
2681 if (tq_ptr == &coff_type.type_qualifiers[0])
2683 /* FIXME: We could handle this by setting the continued bit.
2684 There would still be a limit: the .type argument can not
2686 as_warn ("The type of %s is too complex; it will be simplified",
2692 else if (ISFCN (val))
2693 *--tq_ptr = tq_Proc;
2694 else if (ISARY (val))
2695 *--tq_ptr = tq_Array;
2697 as_fatal ("Unrecognized .type argument");
2702 tq_shft = &coff_type.type_qualifiers[0];
2703 while (tq_ptr != &coff_type.type_qualifiers[N_TQ])
2704 *tq_shft++ = *tq_ptr++;
2706 if (tq_shft != &coff_type.type_qualifiers[0] && tq_shft[-1] == tq_Proc)
2708 /* If this is a function, ignore it, so that we don't get two
2709 entries (one from the .ent, and one for the .def that
2710 precedes it). Save the type information so that the end
2711 block can properly add it after the begin block index. For
2712 MIPS knows what reason, we must strip off the function type
2714 coff_is_function = 1;
2715 tq_shft[-1] = tq_Nil;
2718 while (tq_shft != &coff_type.type_qualifiers[N_TQ])
2719 *tq_shft++ = tq_Nil;
2721 demand_empty_rest_of_line ();
2724 /* Handle the .tag directive, which gives the name of a structure,
2728 ecoff_directive_tag (ignore)
2734 if (coff_sym_name == (char *) NULL)
2736 as_warn (".tag pseudo-op used outside of .def/.endef; ignored");
2737 demand_empty_rest_of_line ();
2741 name = input_line_pointer;
2742 name_end = get_symbol_end ();
2744 coff_tag = (char *) xmalloc ((unsigned long) (strlen (name) + 1));
2745 strcpy (coff_tag, name);
2747 *input_line_pointer = name_end;
2749 demand_empty_rest_of_line ();
2752 /* Handle the .val directive, which gives the value of the symbol. It
2753 may be the name of a static or global symbol. */
2756 ecoff_directive_val (ignore)
2759 if (coff_sym_name == (char *) NULL)
2761 as_warn (".val pseudo-op used outside of .def/.endef; ignored");
2762 demand_empty_rest_of_line ();
2766 if (! is_name_beginner ((unsigned char) *input_line_pointer))
2767 coff_value = get_absolute_expression ();
2773 name = input_line_pointer;
2774 name_end = get_symbol_end ();
2776 if (strcmp (name, ".") == 0)
2777 as_warn ("`.val .' not supported");
2779 coff_sym_value = symbol_find_or_make (name);
2781 *input_line_pointer = name_end;
2783 /* FIXME: gcc can generate address expressions here in unusual
2784 cases (search for "obscure" in sdbout.c), although this is
2785 very unlikely for a MIPS chip. */
2788 demand_empty_rest_of_line ();
2791 /* Handle the .endef directive, which terminates processing of COFF
2792 debugging information for a symbol. */
2795 ecoff_directive_endef (ignore)
2802 demand_empty_rest_of_line ();
2804 if (coff_sym_name == (char *) NULL)
2806 as_warn (".endef pseudo-op used before .def; ignored");
2810 name = coff_sym_name;
2811 coff_sym_name = (char *) NULL;
2813 /* If the symbol is a static or external, we have already gotten the
2814 appropriate type and class, so make sure we don't override those
2815 values. This is needed because there are some type and classes
2816 that are not in COFF, such as short data, etc. */
2817 if (coff_sym_value != (symbolS *) NULL)
2819 coff_symbol_typ = st_Nil;
2820 coff_storage_class = sc_Nil;
2823 coff_type.extra_sizes = coff_tag != (char *) NULL;
2824 if (coff_type.num_dims > 0)
2826 int diff = coff_type.num_dims - coff_type.num_sizes;
2827 int i = coff_type.num_dims - 1;
2830 if (coff_type.num_sizes != 1 || diff < 0)
2832 as_warn ("Bad COFF debugging info");
2836 /* If this is an array, make sure the same number of dimensions
2837 and sizes were passed, creating extra sizes for multiply
2838 dimensioned arrays if not passed. */
2839 coff_type.extra_sizes = 0;
2842 j = (sizeof (coff_type.sizes) / sizeof (coff_type.sizes[0])) - 1;
2845 coff_type.sizes[j] = (((j - diff) >= 0)
2846 ? coff_type.sizes[j - diff]
2851 coff_type.num_sizes = i + 1;
2852 for (i--; i >= 0; i--)
2853 coff_type.sizes[i] = (coff_type.sizes[i + 1]
2854 / coff_type.dimensions[i + 1]);
2857 else if (coff_symbol_typ == st_Member
2858 && coff_type.num_sizes - coff_type.extra_sizes == 1)
2860 /* Is this a bitfield? This is indicated by a structure memeber
2861 having a size field that isn't an array. */
2862 coff_type.bitfield = 1;
2865 /* Except for enumeration members & begin/ending of scopes, put the
2866 type word in the aux. symbol table. */
2867 if (coff_symbol_typ == st_Block || coff_symbol_typ == st_End)
2869 else if (coff_inside_enumeration)
2870 indx = cur_file_ptr->void_type;
2873 if (coff_type.basic_type == bt_Struct
2874 || coff_type.basic_type == bt_Union
2875 || coff_type.basic_type == bt_Enum)
2877 if (coff_tag == (char *) NULL)
2879 as_warn ("No tag specified for %s", name);
2883 coff_type.tag_ptr = get_tag (coff_tag, (localsym_t *) NULL,
2884 coff_type.basic_type);
2887 if (coff_is_function)
2889 last_func_type_info = coff_type;
2890 last_func_sym_value = coff_sym_value;
2894 indx = add_aux_sym_tir (&coff_type,
2896 &cur_file_ptr->thash_head[0]);
2899 /* Do any last minute adjustments that are necessary. */
2900 switch (coff_symbol_typ)
2905 /* For the beginning of structs, unions, and enumerations, the
2906 size info needs to be passed in the value field. */
2908 if (coff_type.num_sizes - coff_type.num_dims - coff_type.extra_sizes
2911 as_warn ("Bad COFF debugging information");
2915 coff_value = coff_type.sizes[0];
2917 coff_inside_enumeration = (coff_type.orig_type == T_ENUM);
2920 /* For the end of structs, unions, and enumerations, omit the
2921 name which is always ".eos". This needs to be done last, so
2922 that any error reporting above gives the correct name. */
2925 name = (char *) NULL;
2927 coff_inside_enumeration = 0;
2930 /* Members of structures and unions that aren't bitfields, need
2931 to adjust the value from a byte offset to a bit offset.
2932 Members of enumerations do not have the value adjusted, and
2933 can be distinguished by indx == indexNil. For enumerations,
2934 update the maximum enumeration value. */
2936 if (! coff_type.bitfield && ! coff_inside_enumeration)
2942 /* Add the symbol. */
2943 sym = add_ecoff_symbol (name,
2947 (symint_t) coff_value,
2950 /* deal with struct, union, and enum tags. */
2951 if (coff_symbol_typ == st_Block)
2953 /* Create or update the tag information. */
2954 tag_t *tag_ptr = get_tag (name,
2956 coff_type.basic_type);
2959 /* Remember any forward references. */
2960 for (pf = &sym->forward_ref;
2961 *pf != (forward_t *) NULL;
2964 *pf = tag_ptr->forward_ref;
2965 tag_ptr->forward_ref = (forward_t *) NULL;
2969 /* Parse .end directives. */
2972 ecoff_directive_end (ignore)
2980 if (cur_file_ptr == (efdr_t *) NULL)
2982 as_warn (".end directive without a preceding .file directive");
2983 demand_empty_rest_of_line ();
2987 if (cur_proc_ptr == (proc_t *) NULL)
2989 as_warn (".end directive without a preceding .ent directive");
2990 demand_empty_rest_of_line ();
2994 name = input_line_pointer;
2995 name_end = get_symbol_end ();
2998 if (! is_name_beginner (ch))
3000 as_warn (".end directive has no name");
3001 *input_line_pointer = name_end;
3002 demand_empty_rest_of_line ();
3006 /* The value is the distance between the .end directive and the
3007 corresponding symbol. We create a fake symbol to hold the
3008 current location, and put in the offset when we write out the
3010 ent = symbol_find (name);
3011 if (ent == (symbolS *) NULL)
3012 as_warn (".end directive names unknown symbol");
3015 (void) add_ecoff_symbol ((const char *) NULL, st_End, sc_Text,
3016 symbol_new ("L0\001", now_seg,
3017 (valueT) frag_now_fix (),
3019 (symint_t) 0, (symint_t) 0);
3021 if (stabs_seen && generate_asm_lineno)
3025 n = xmalloc (strlen (name) + 4);
3028 (void) add_ecoff_symbol ((const char *) n, stGlobal, scText,
3029 ent, 0, ECOFF_MARK_STAB (N_FUN));
3033 cur_proc_ptr = (proc_t *) NULL;
3035 *input_line_pointer = name_end;
3036 demand_empty_rest_of_line ();
3039 /* Parse .ent directives. */
3042 ecoff_directive_ent (ignore)
3049 if (cur_file_ptr == (efdr_t *) NULL)
3050 add_file ((const char *) NULL, 0);
3052 if (cur_proc_ptr != (proc_t *) NULL)
3054 as_warn ("second .ent directive found before .end directive");
3055 demand_empty_rest_of_line ();
3059 name = input_line_pointer;
3060 name_end = get_symbol_end ();
3063 if (! is_name_beginner (ch))
3065 as_warn (".ent directive has no name");
3066 *input_line_pointer = name_end;
3067 demand_empty_rest_of_line ();
3071 add_procedure (name);
3073 *input_line_pointer = name_end;
3075 /* The .ent directive is sometimes followed by a number. I'm not
3076 really sure what the number means. I don't see any way to store
3077 the information in the PDR. The Irix 4 assembler seems to ignore
3080 if (*input_line_pointer == ',')
3082 ++input_line_pointer;
3085 if (isdigit (*input_line_pointer) || *input_line_pointer == '-')
3086 (void) get_absolute_expression ();
3088 demand_empty_rest_of_line ();
3091 /* Parse .file directives. */
3094 ecoff_directive_file (ignore)
3101 if (cur_proc_ptr != (proc_t *) NULL)
3103 as_warn ("No way to handle .file within .ent/.end section");
3104 demand_empty_rest_of_line ();
3108 indx = (int) get_absolute_expression ();
3110 /* FIXME: we don't have to save the name here. */
3111 name = demand_copy_C_string (&len);
3113 add_file (name, indx - 1);
3115 demand_empty_rest_of_line ();
3118 /* Parse .fmask directives. */
3121 ecoff_directive_fmask (ignore)
3126 if (cur_proc_ptr == (proc_t *) NULL)
3128 as_warn (".fmask outside of .ent");
3129 demand_empty_rest_of_line ();
3133 if (get_absolute_expression_and_terminator (&val) != ',')
3135 as_warn ("Bad .fmask directive");
3136 --input_line_pointer;
3137 demand_empty_rest_of_line ();
3141 cur_proc_ptr->pdr.fregmask = val;
3142 cur_proc_ptr->pdr.fregoffset = get_absolute_expression ();
3144 demand_empty_rest_of_line ();
3147 /* Parse .frame directives. */
3150 ecoff_directive_frame (ignore)
3155 if (cur_proc_ptr == (proc_t *) NULL)
3157 as_warn (".frame outside of .ent");
3158 demand_empty_rest_of_line ();
3162 cur_proc_ptr->pdr.framereg = tc_get_register (1);
3165 if (*input_line_pointer++ != ','
3166 || get_absolute_expression_and_terminator (&val) != ',')
3168 as_warn ("Bad .frame directive");
3169 --input_line_pointer;
3170 demand_empty_rest_of_line ();
3174 cur_proc_ptr->pdr.frameoffset = val;
3176 cur_proc_ptr->pdr.pcreg = tc_get_register (0);
3178 #if 0 /* Alpha-OSF1 adds "the offset of saved $a0 from $sp", according
3179 to Sandro. I don't yet know where this value should be stored, if
3181 demand_empty_rest_of_line ();
3187 /* Parse .mask directives. */
3190 ecoff_directive_mask (ignore)
3195 if (cur_proc_ptr == (proc_t *) NULL)
3197 as_warn (".mask outside of .ent");
3198 demand_empty_rest_of_line ();
3202 if (get_absolute_expression_and_terminator (&val) != ',')
3204 as_warn ("Bad .mask directive");
3205 --input_line_pointer;
3206 demand_empty_rest_of_line ();
3210 cur_proc_ptr->pdr.regmask = val;
3211 cur_proc_ptr->pdr.regoffset = get_absolute_expression ();
3213 demand_empty_rest_of_line ();
3216 /* Parse .loc directives. */
3219 ecoff_directive_loc (ignore)
3222 lineno_list_t *list;
3225 if (cur_file_ptr == (efdr_t *) NULL)
3227 as_warn (".loc before .file");
3228 demand_empty_rest_of_line ();
3232 if (now_seg != text_section)
3234 as_warn (".loc outside of .text");
3235 demand_empty_rest_of_line ();
3239 /* Skip the file number. */
3241 get_absolute_expression ();
3244 lineno = get_absolute_expression ();
3248 listing_source_line (lineno);
3251 /* If we're building stabs, then output a special label rather than
3252 ECOFF line number info. */
3255 (void) add_ecoff_symbol ((char *) NULL, st_Label, sc_Text,
3256 symbol_new ("L0\001", now_seg,
3257 (valueT) frag_now_fix (),
3263 list = allocate_lineno_list ();
3265 list->next = (lineno_list_t *) NULL;
3266 list->file = cur_file_ptr;
3267 list->proc = cur_proc_ptr;
3268 list->frag = frag_now;
3269 list->paddr = frag_now_fix ();
3270 list->lineno = lineno;
3272 /* A .loc directive will sometimes appear before a .ent directive,
3273 which means that cur_proc_ptr will be NULL here. Arrange to
3275 if (cur_proc_ptr == (proc_t *) NULL)
3279 pl = &noproc_lineno;
3280 while (*pl != (lineno_list_t *) NULL)
3286 *last_lineno_ptr = list;
3287 last_lineno_ptr = &list->next;
3291 /* Make sure the @stabs symbol is emitted. */
3299 /* Add a dummy @stabs dymbol. */
3301 (void) add_ecoff_symbol (stabs_symbol, stNil, scInfo,
3303 (symint_t) -1, ECOFF_MARK_STAB (0));
3307 /* Handle .stabs directives. The actual parsing routine is done by a
3308 generic routine. This routine is called via OBJ_PROCESS_STAB.
3309 When this is called, input_line_pointer will be pointing at the
3310 value field of the stab.
3312 .stabs directives have five fields:
3313 "string" a string, encoding the type information.
3314 code a numeric code, defined in <stab.h>
3316 desc a zero or line number
3317 value a numeric value or an address.
3319 If the value is relocatable, we transform this into:
3320 iss points as an index into string space
3321 value value from lookup of the name
3322 st st from lookup of the name
3323 sc sc from lookup of the name
3324 index code|CODE_MASK
3326 If the value is not relocatable, we transform this into:
3327 iss points as an index into string space
3331 index code|CODE_MASK
3333 .stabn directives have four fields (string is null):
3334 code a numeric code, defined in <stab.h>
3336 desc a zero or a line number
3337 value a numeric value or an address. */
3340 ecoff_stab (sec, what, string, type, other, desc)
3348 efdr_t *save_file_ptr = cur_file_ptr;
3354 localsym_t *hold = NULL;
3356 ecoff_debugging_seen = 1;
3358 /* We don't handle .stabd. */
3359 if (what != 's' && what != 'n')
3361 as_bad (".stab%c is not supported", what);
3365 /* A .stabn uses a null name, not an empty string. */
3369 /* We ignore the other field. */
3371 as_warn (".stab%c: ignoring non-zero other field", what);
3373 /* Make sure we have a current file. */
3374 if (cur_file_ptr == (efdr_t *) NULL)
3376 add_file ((const char *) NULL, 0);
3377 save_file_ptr = cur_file_ptr;
3380 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
3382 if (stabs_seen == 0)
3385 /* Line number stabs are handled differently, since they have two
3386 values, the line number and the address of the label. We use the
3387 index field (aka desc) to hold the line number, and the value
3388 field to hold the address. The symbol type is st_Label, which
3389 should be different from the other stabs, so that gdb can
3391 if (type == N_SLINE)
3399 listing_source_line ((unsigned int) desc);
3402 dummy_symr.index = desc;
3403 if (dummy_symr.index != desc)
3405 as_warn ("Line number (%d) for .stab%c directive cannot fit in index field (20 bits)",
3410 name = input_line_pointer;
3411 name_end = get_symbol_end ();
3413 sym = symbol_find_or_make (name);
3414 *input_line_pointer = name_end;
3424 if (listing && (type == N_SO || type == N_SOL))
3425 listing_source_file (string);
3428 if (isdigit (*input_line_pointer)
3429 || *input_line_pointer == '-'
3430 || *input_line_pointer == '+')
3434 sym = (symbolS *) NULL;
3435 value = get_absolute_expression ();
3437 else if (! is_name_beginner ((unsigned char) *input_line_pointer))
3439 as_warn ("Illegal .stab%c directive, bad character", what);
3447 name = input_line_pointer;
3448 name_end = get_symbol_end ();
3450 sym = symbol_find_or_make (name);
3456 *input_line_pointer = name_end;
3457 if (name_end == '+' || name_end == '-')
3459 ++input_line_pointer;
3460 value = get_absolute_expression ();
3461 if (name_end == '-')
3466 indx = ECOFF_MARK_STAB (type);
3469 /* Don't store the stabs symbol we are creating as the type of the
3470 ECOFF symbol. We want to compute the type of the ECOFF symbol
3472 if (sym != (symbolS *) NULL)
3473 hold = sym->ecoff_symbol;
3475 (void) add_ecoff_symbol (string, st, sc, sym, value, indx);
3477 if (sym != (symbolS *) NULL)
3478 sym->ecoff_symbol = hold;
3480 /* Restore normal file type. */
3481 cur_file_ptr = save_file_ptr;
3484 /* Frob an ECOFF symbol. Small common symbols go into a special
3485 .scommon section rather than bfd_com_section. */
3488 ecoff_frob_symbol (sym)
3491 if (S_IS_COMMON (sym)
3492 && S_GET_VALUE (sym) > 0
3493 && S_GET_VALUE (sym) <= bfd_get_gp_size (stdoutput))
3495 static asection scom_section;
3496 static asymbol scom_symbol;
3498 /* We must construct a fake section similar to bfd_com_section
3499 but with the name .scommon. */
3500 if (scom_section.name == NULL)
3502 scom_section = bfd_com_section;
3503 scom_section.name = ".scommon";
3504 scom_section.output_section = &scom_section;
3505 scom_section.symbol = &scom_symbol;
3506 scom_section.symbol_ptr_ptr = &scom_section.symbol;
3507 scom_symbol = *bfd_com_section.symbol;
3508 scom_symbol.name = ".scommon";
3509 scom_symbol.section = &scom_section;
3511 S_SET_SEGMENT (sym, &scom_section);
3515 /* Add bytes to the symbolic information buffer. */
3518 ecoff_add_bytes (buf, bufend, bufptr, need)
3528 need -= *bufend - bufptr;
3529 if (need < PAGE_SIZE)
3531 want = (*bufend - *buf) + need;
3532 *buf = xrealloc (*buf, want);
3533 *bufend = *buf + want;
3537 /* Adjust the symbolic information buffer to the alignment required
3538 for the ECOFF target debugging information. */
3540 static unsigned long
3541 ecoff_padding_adjust (backend, buf, bufend, offset, bufptrptr)
3542 const struct ecoff_debug_swap *backend;
3545 unsigned long offset;
3548 bfd_size_type align;
3550 align = backend->debug_align;
3551 if ((offset & (align - 1)) != 0)
3555 add = align - (offset & (align - 1));
3556 if (*bufend - (*buf + offset) < add)
3557 (void) ecoff_add_bytes (buf, bufend, *buf + offset, add);
3558 memset (*buf + offset, 0, add);
3560 if (bufptrptr != (char **) NULL)
3561 *bufptrptr = *buf + offset;
3567 /* Build the line number information. */
3569 static unsigned long
3570 ecoff_build_lineno (backend, buf, bufend, offset, linecntptr)
3571 const struct ecoff_debug_swap *backend;
3574 unsigned long offset;
3578 register lineno_list_t *l;
3579 lineno_list_t *last;
3585 lineno_list_t first;
3587 if (linecntptr != (long *) NULL)
3590 bufptr = *buf + offset;
3592 file = (efdr_t *) NULL;
3593 proc = (proc_t *) NULL;
3594 last = (lineno_list_t *) NULL;
3599 /* For some reason the address of the first procedure is ignored
3600 when reading line numbers. This doesn't matter if the address of
3601 the first procedure is 0, but when gcc is generating MIPS
3602 embedded PIC code, it will put strings in the .text section
3603 before the first procedure. We cope by inserting a dummy line if
3604 the address of the first procedure is not 0. Hopefully this
3605 won't screw things up too badly. */
3606 if (first_proc_ptr != (proc_t *) NULL
3607 && first_lineno != (lineno_list_t *) NULL
3608 && ((S_GET_VALUE (first_proc_ptr->sym->as_sym)
3609 + bfd_get_section_vma (stdoutput,
3610 S_GET_SEGMENT (first_proc_ptr->sym->as_sym)))
3613 first.file = first_lineno->file;
3614 first.proc = first_lineno->proc;
3615 first.frag = &zero_address_frag;
3619 first.next = first_lineno;
3620 first_lineno = &first;
3623 for (l = first_lineno; l != (lineno_list_t *) NULL; l = l->next)
3628 /* Get the offset to the memory address of the next line number
3629 (in words). Do this first, so that we can skip ahead to the
3630 next useful line number entry. */
3631 if (l->next == (lineno_list_t *) NULL)
3633 /* We want a count of zero, but it will be decremented
3634 before it is used. */
3639 count = ((l->next->frag->fr_address + l->next->paddr
3640 - (l->frag->fr_address + l->paddr))
3644 /* Don't change last, so we still get the right delta. */
3649 if (l->file != file || l->proc != proc)
3651 if (l->proc != proc && proc != (proc_t *) NULL)
3652 proc->pdr.lnHigh = last->lineno;
3653 if (l->file != file && file != (efdr_t *) NULL)
3655 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3656 /* The cline field is ill-documented. This is a guess
3657 at the right value. */
3658 file->fdr.cline = totcount + count;
3659 if (linecntptr != (long *) NULL)
3660 *linecntptr += totcount + count;
3664 if (l->file != file)
3667 file->fdr.ilineBase = iline;
3668 file->fdr.cbLineOffset = c;
3670 if (l->proc != proc)
3673 if (proc != (proc_t *) NULL)
3675 proc->pdr.lnLow = l->lineno;
3676 proc->pdr.cbLineOffset = c - file->fdr.cbLineOffset;
3677 /* The iline field is ill-documented. This is a
3678 guess at the right value. */
3679 proc->pdr.iline = totcount;
3683 last = (lineno_list_t *) NULL;
3688 /* Get the offset to this line number. */
3689 if (last == (lineno_list_t *) NULL)
3692 delta = l->lineno - last->lineno;
3694 /* Put in the offset to this line number. */
3699 /* 1 is added to each count read. */
3701 /* We can only adjust the word count by up to 15 words at a
3713 if (delta >= -7 && delta <= 7)
3715 if (bufptr >= *bufend)
3716 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3717 *bufptr++ = setcount + (delta << 4);
3725 if (*bufend - bufptr < 3)
3726 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 3);
3727 *bufptr++ = setcount + (8 << 4);
3728 if (delta < -0x8000)
3733 else if (delta > 0x7fff)
3743 *bufptr++ = set >> 8;
3744 *bufptr++ = set & 0xffff;
3749 /* Finish adjusting the count. */
3752 if (bufptr >= *bufend)
3753 bufptr = ecoff_add_bytes (buf, bufend, bufptr, (long) 1);
3754 /* 1 is added to each count read. */
3773 if (proc != (proc_t *) NULL)
3774 proc->pdr.lnHigh = last->lineno;
3775 if (file != (efdr_t *) NULL)
3777 file->fdr.cbLine = c - file->fdr.cbLineOffset;
3778 file->fdr.cline = totcount;
3781 if (linecntptr != (long *) NULL)
3782 *linecntptr += totcount;
3784 c = ecoff_padding_adjust (backend, buf, bufend, c, &bufptr);
3789 /* Build and swap out the symbols. */
3791 static unsigned long
3792 ecoff_build_symbols (backend, buf, bufend, offset)
3793 const struct ecoff_debug_swap *backend;
3796 unsigned long offset;
3798 const bfd_size_type external_sym_size = backend->external_sym_size;
3799 void (* const swap_sym_out) PARAMS ((bfd *, const SYMR *, PTR))
3800 = backend->swap_sym_out;
3803 vlinks_t *file_link;
3805 sym_out = *buf + offset;
3809 /* The symbols are stored by file. */
3810 for (file_link = file_desc.first;
3811 file_link != (vlinks_t *) NULL;
3812 file_link = file_link->next)
3819 if (file_link->next == (vlinks_t *) NULL)
3820 fil_cnt = file_desc.objects_last_page;
3822 fil_cnt = file_desc.objects_per_page;
3823 fil_ptr = file_link->datum->file;
3824 fil_end = fil_ptr + fil_cnt;
3825 for (; fil_ptr < fil_end; fil_ptr++)
3829 fil_ptr->fdr.isymBase = isym;
3831 for (sym_link = fil_ptr->symbols.first;
3832 sym_link != (vlinks_t *) NULL;
3833 sym_link = sym_link->next)
3836 localsym_t *sym_ptr;
3837 localsym_t *sym_end;
3839 if (sym_link->next == (vlinks_t *) NULL)
3840 sym_cnt = fil_ptr->symbols.objects_last_page;
3842 sym_cnt = fil_ptr->symbols.objects_per_page;
3843 sym_ptr = sym_link->datum->sym;
3844 sym_end = sym_ptr + sym_cnt;
3845 for (; sym_ptr < sym_end; sym_ptr++)
3851 know (sym_ptr->file_ptr == fil_ptr);
3853 /* If there is no associated gas symbol, then this
3854 is a pure debugging symbol. We have already
3855 added the name (if any) to fil_ptr->strings.
3856 Otherwise we must decide whether this is an
3857 external or a local symbol (actually, it may be
3858 both if the local provides additional debugging
3859 information for the external). */
3861 as_sym = sym_ptr->as_sym;
3862 if (as_sym != (symbolS *) NULL)
3866 /* The value of a block start symbol is the
3867 offset from the start of the procedure. For
3868 other symbols we just use the gas value (but
3869 we must offset it by the vma of the section,
3870 just as BFD does, because BFD will not see
3872 if (sym_ptr->ecoff_sym.asym.st == (int) st_Block
3873 && sym_ptr->ecoff_sym.asym.sc == (int) sc_Text)
3877 know (sym_ptr->proc_ptr != (proc_t *) NULL);
3878 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
3879 if (S_GET_SEGMENT (as_sym)
3880 != S_GET_SEGMENT (begin_sym))
3881 as_warn (".begin/.bend in different segments");
3882 sym_ptr->ecoff_sym.asym.value =
3883 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
3886 sym_ptr->ecoff_sym.asym.value =
3887 (S_GET_VALUE (as_sym)
3888 + bfd_get_section_vma (stdoutput,
3889 S_GET_SEGMENT (as_sym)));
3891 /* Set st_Proc to st_StaticProc for local
3893 if (sym_ptr->ecoff_sym.asym.st == st_Proc
3894 && S_IS_DEFINED (as_sym)
3895 && ! S_IS_EXTERNAL (as_sym))
3896 sym_ptr->ecoff_sym.asym.st = st_StaticProc;
3898 /* Get the type and storage class based on where
3899 the symbol actually wound up. Traditionally,
3900 N_LBRAC and N_RBRAC are *not* relocated. */
3901 indx = sym_ptr->ecoff_sym.asym.index;
3902 if (sym_ptr->ecoff_sym.asym.st == st_Nil
3903 && sym_ptr->ecoff_sym.asym.sc == sc_Nil
3904 && (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
3905 || ((ECOFF_UNMARK_STAB (indx) != N_LBRAC)
3906 && (ECOFF_UNMARK_STAB (indx) != N_RBRAC))))
3909 const char *segname;
3913 seg = S_GET_SEGMENT (as_sym);
3914 segname = segment_name (seg);
3916 if (! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym)
3917 && (S_IS_EXTERNAL (as_sym)
3918 || ! S_IS_DEFINED (as_sym)))
3920 if ((as_sym->bsym->flags & BSF_FUNCTION) != 0)
3925 else if (seg == text_section)
3930 if (! S_IS_DEFINED (as_sym))
3932 if (as_sym->ecoff_extern_size == 0
3933 || (as_sym->ecoff_extern_size
3934 > bfd_get_gp_size (stdoutput)))
3939 sym_ptr->ecoff_sym.asym.value =
3940 as_sym->ecoff_extern_size;
3943 else if (S_IS_COMMON (as_sym))
3945 if (S_GET_VALUE (as_sym) > 0
3946 && (S_GET_VALUE (as_sym)
3947 <= bfd_get_gp_size (stdoutput)))
3952 else if (seg == text_section)
3954 else if (seg == data_section)
3956 else if (strcmp (segname, ".rdata") == 0
3957 || strcmp (segname, ".rodata") == 0)
3959 else if (strcmp (segname, ".sdata") == 0)
3961 else if (seg == bss_section)
3963 else if (strcmp (segname, ".sbss") == 0)
3965 else if (seg == &bfd_abs_section)
3969 /* This must be a user named section.
3970 This is not possible in ECOFF, but it
3975 sym_ptr->ecoff_sym.asym.st = (int) st;
3976 sym_ptr->ecoff_sym.asym.sc = (int) sc;
3979 /* This is just an external symbol if it is
3980 outside a procedure and it has a type.
3981 FIXME: g++ will generate symbols which have
3982 different names in the debugging information
3983 than the actual symbol. Should we handle
3985 if ((S_IS_EXTERNAL (as_sym)
3986 || ! S_IS_DEFINED (as_sym))
3987 && sym_ptr->proc_ptr == (proc_t *) NULL
3988 && sym_ptr->ecoff_sym.asym.st != (int) st_Nil
3989 && ! ECOFF_IS_STAB (&sym_ptr->ecoff_sym.asym))
3992 /* If an st_end symbol has an associated gas
3993 symbol, then it is a local label created for
3994 a .bend or .end directive. Stabs line
3995 numbers will have \001 in the names. */
3997 && sym_ptr->ecoff_sym.asym.st != st_End
3998 && strchr (sym_ptr->name, '\001') == 0)
3999 sym_ptr->ecoff_sym.asym.iss =
4000 add_string (&fil_ptr->strings,
4006 /* We now know the index of this symbol; fill in
4007 locations that have been waiting for that
4009 if (sym_ptr->begin_ptr != (localsym_t *) NULL)
4011 localsym_t *begin_ptr;
4015 begin_ptr = sym_ptr->begin_ptr;
4016 know (begin_ptr->sym_index != -1);
4017 sym_ptr->ecoff_sym.asym.index = begin_ptr->sym_index;
4018 if (sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4019 sym_ptr->ecoff_sym.asym.iss =
4020 begin_ptr->ecoff_sym.asym.iss;
4022 begin_type = begin_ptr->ecoff_sym.asym.st;
4023 if (begin_type == st_File
4024 || begin_type == st_Block)
4026 begin_ptr->ecoff_sym.asym.index =
4027 isym - ifilesym + 1;
4028 (*swap_sym_out) (stdoutput,
4029 &begin_ptr->ecoff_sym.asym,
4032 + (begin_ptr->sym_index
4033 * external_sym_size)));
4037 know (begin_ptr->index_ptr != (aux_t *) NULL);
4038 begin_ptr->index_ptr->data.isym =
4039 isym - ifilesym + 1;
4042 /* The value of the symbol marking the end of a
4043 procedure is the size of the procedure. The
4044 value of the symbol marking the end of a
4045 block is the offset from the start of the
4046 procedure to the block. */
4047 if (begin_type == st_Proc
4048 || begin_type == st_StaticProc)
4050 know (as_sym != (symbolS *) NULL);
4051 know (begin_ptr->as_sym != (symbolS *) NULL);
4052 if (S_GET_SEGMENT (as_sym)
4053 != S_GET_SEGMENT (begin_ptr->as_sym))
4054 as_warn (".begin/.bend in different segments");
4055 sym_ptr->ecoff_sym.asym.value =
4056 (S_GET_VALUE (as_sym)
4057 - S_GET_VALUE (begin_ptr->as_sym));
4059 else if (begin_type == st_Block
4060 && sym_ptr->ecoff_sym.asym.sc != (int) sc_Info)
4064 know (as_sym != (symbolS *) NULL);
4065 know (sym_ptr->proc_ptr != (proc_t *) NULL);
4066 begin_sym = sym_ptr->proc_ptr->sym->as_sym;
4067 if (S_GET_SEGMENT (as_sym)
4068 != S_GET_SEGMENT (begin_sym))
4069 as_warn (".begin/.bend in different segments");
4070 sym_ptr->ecoff_sym.asym.value =
4071 S_GET_VALUE (as_sym) - S_GET_VALUE (begin_sym);
4075 for (f = sym_ptr->forward_ref;
4076 f != (forward_t *) NULL;
4080 f->ifd_ptr->data.isym = fil_ptr->file_index;
4081 f->index_ptr->data.rndx.index = isym - ifilesym;
4086 if (*bufend - sym_out < external_sym_size)
4087 sym_out = ecoff_add_bytes (buf, bufend,
4090 (*swap_sym_out) (stdoutput, &sym_ptr->ecoff_sym.asym,
4092 sym_out += external_sym_size;
4094 sym_ptr->sym_index = isym;
4096 if (sym_ptr->proc_ptr != (proc_t *) NULL
4097 && sym_ptr->proc_ptr->sym == sym_ptr)
4098 sym_ptr->proc_ptr->pdr.isym = isym - ifilesym;
4103 /* Record the local symbol index and file number in
4104 case this is an external symbol. Note that this
4105 destroys the asym.index field. */
4106 if (as_sym != (symbolS *) NULL
4107 && as_sym->ecoff_symbol == sym_ptr)
4109 if ((sym_ptr->ecoff_sym.asym.st == st_Proc
4110 || sym_ptr->ecoff_sym.asym.st == st_StaticProc)
4112 sym_ptr->ecoff_sym.asym.index = isym - ifilesym - 1;
4113 sym_ptr->ecoff_sym.ifd = fil_ptr->file_index;
4117 fil_ptr->fdr.csym = isym - fil_ptr->fdr.isymBase;
4121 return offset + isym * external_sym_size;
4124 /* Swap out the procedure information. */
4126 static unsigned long
4127 ecoff_build_procs (backend, buf, bufend, offset)
4128 const struct ecoff_debug_swap *backend;
4131 unsigned long offset;
4133 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4134 void (* const swap_pdr_out) PARAMS ((bfd *, const PDR *, PTR))
4135 = backend->swap_pdr_out;
4138 vlinks_t *file_link;
4140 pdr_out = *buf + offset;
4144 /* The procedures are stored by file. */
4145 for (file_link = file_desc.first;
4146 file_link != (vlinks_t *) NULL;
4147 file_link = file_link->next)
4153 if (file_link->next == (vlinks_t *) NULL)
4154 fil_cnt = file_desc.objects_last_page;
4156 fil_cnt = file_desc.objects_per_page;
4157 fil_ptr = file_link->datum->file;
4158 fil_end = fil_ptr + fil_cnt;
4159 for (; fil_ptr < fil_end; fil_ptr++)
4161 vlinks_t *proc_link;
4164 fil_ptr->fdr.ipdFirst = iproc;
4166 for (proc_link = fil_ptr->procs.first;
4167 proc_link != (vlinks_t *) NULL;
4168 proc_link = proc_link->next)
4174 if (proc_link->next == (vlinks_t *) NULL)
4175 prc_cnt = fil_ptr->procs.objects_last_page;
4177 prc_cnt = fil_ptr->procs.objects_per_page;
4178 proc_ptr = proc_link->datum->proc;
4179 proc_end = proc_ptr + prc_cnt;
4180 for (; proc_ptr < proc_end; proc_ptr++)
4185 adr_sym = proc_ptr->sym->as_sym;
4186 adr = (S_GET_VALUE (adr_sym)
4187 + bfd_get_section_vma (stdoutput,
4188 S_GET_SEGMENT (adr_sym)));
4191 /* This code used to force the adr of the very
4192 first fdr to be 0. However, the native tools
4193 don't do that, and I can't remember why it
4194 used to work that way, so I took it out. */
4195 fil_ptr->fdr.adr = adr;
4198 proc_ptr->pdr.adr = adr - fil_ptr->fdr.adr;
4199 if (*bufend - pdr_out < external_pdr_size)
4200 pdr_out = ecoff_add_bytes (buf, bufend,
4203 (*swap_pdr_out) (stdoutput, &proc_ptr->pdr, pdr_out);
4204 pdr_out += external_pdr_size;
4208 fil_ptr->fdr.cpd = iproc - fil_ptr->fdr.ipdFirst;
4212 return offset + iproc * external_pdr_size;
4215 /* Swap out the aux information. */
4217 static unsigned long
4218 ecoff_build_aux (backend, buf, bufend, offset)
4219 const struct ecoff_debug_swap *backend;
4222 unsigned long offset;
4225 union aux_ext *aux_out;
4227 vlinks_t *file_link;
4229 bigendian = stdoutput->xvec->header_byteorder_big_p;
4231 aux_out = (union aux_ext *) (*buf + offset);
4235 /* The aux entries are stored by file. */
4236 for (file_link = file_desc.first;
4237 file_link != (vlinks_t *) NULL;
4238 file_link = file_link->next)
4244 if (file_link->next == (vlinks_t *) NULL)
4245 fil_cnt = file_desc.objects_last_page;
4247 fil_cnt = file_desc.objects_per_page;
4248 fil_ptr = file_link->datum->file;
4249 fil_end = fil_ptr + fil_cnt;
4250 for (; fil_ptr < fil_end; fil_ptr++)
4254 fil_ptr->fdr.fBigendian = bigendian;
4255 fil_ptr->fdr.iauxBase = iaux;
4256 for (aux_link = fil_ptr->aux_syms.first;
4257 aux_link != (vlinks_t *) NULL;
4258 aux_link = aux_link->next)
4264 if (aux_link->next == (vlinks_t *) NULL)
4265 aux_cnt = fil_ptr->aux_syms.objects_last_page;
4267 aux_cnt = fil_ptr->aux_syms.objects_per_page;
4268 aux_ptr = aux_link->datum->aux;
4269 aux_end = aux_ptr + aux_cnt;
4270 for (; aux_ptr < aux_end; aux_ptr++)
4272 if (*bufend - (char *) aux_out < sizeof (union aux_ext))
4273 aux_out = ((union aux_ext *)
4274 ecoff_add_bytes (buf, bufend,
4276 sizeof (union aux_ext)));
4277 switch (aux_ptr->type)
4280 (*backend->swap_tir_out) (bigendian,
4285 (*backend->swap_rndx_out) (bigendian,
4286 &aux_ptr->data.rndx,
4290 AUX_PUT_DNLOW (bigendian, aux_ptr->data.dnLow,
4294 AUX_PUT_DNHIGH (bigendian, aux_ptr->data.dnHigh,
4298 AUX_PUT_ISYM (bigendian, aux_ptr->data.isym,
4302 AUX_PUT_ISS (bigendian, aux_ptr->data.iss,
4306 AUX_PUT_WIDTH (bigendian, aux_ptr->data.width,
4310 AUX_PUT_COUNT (bigendian, aux_ptr->data.count,
4319 fil_ptr->fdr.caux = iaux - fil_ptr->fdr.iauxBase;
4323 return ecoff_padding_adjust (backend, buf, bufend,
4324 offset + iaux * sizeof (union aux_ext),
4328 /* Copy out the strings from a varray_t. This returns the number of
4329 bytes copied, rather than the new offset. */
4331 static unsigned long
4332 ecoff_build_strings (buf, bufend, offset, vp)
4335 unsigned long offset;
4342 str_out = *buf + offset;
4346 for (str_link = vp->first;
4347 str_link != (vlinks_t *) NULL;
4348 str_link = str_link->next)
4350 unsigned long str_cnt;
4352 if (str_link->next == (vlinks_t *) NULL)
4353 str_cnt = vp->objects_last_page;
4355 str_cnt = vp->objects_per_page;
4357 if (*bufend - str_out < str_cnt)
4358 str_out = ecoff_add_bytes (buf, bufend, str_out, str_cnt);
4360 memcpy (str_out, str_link->datum->byte, str_cnt);
4368 /* Dump out the local strings. */
4370 static unsigned long
4371 ecoff_build_ss (backend, buf, bufend, offset)
4372 const struct ecoff_debug_swap *backend;
4375 unsigned long offset;
4378 vlinks_t *file_link;
4382 for (file_link = file_desc.first;
4383 file_link != (vlinks_t *) NULL;
4384 file_link = file_link->next)
4390 if (file_link->next == (vlinks_t *) NULL)
4391 fil_cnt = file_desc.objects_last_page;
4393 fil_cnt = file_desc.objects_per_page;
4394 fil_ptr = file_link->datum->file;
4395 fil_end = fil_ptr + fil_cnt;
4396 for (; fil_ptr < fil_end; fil_ptr++)
4400 fil_ptr->fdr.issBase = iss;
4401 ss_cnt = ecoff_build_strings (buf, bufend, offset + iss,
4403 fil_ptr->fdr.cbSs = ss_cnt;
4408 return ecoff_padding_adjust (backend, buf, bufend, offset + iss,
4412 /* Swap out the file descriptors. */
4414 static unsigned long
4415 ecoff_build_fdr (backend, buf, bufend, offset)
4416 const struct ecoff_debug_swap *backend;
4419 unsigned long offset;
4421 const bfd_size_type external_fdr_size = backend->external_fdr_size;
4422 void (* const swap_fdr_out) PARAMS ((bfd *, const FDR *, PTR))
4423 = backend->swap_fdr_out;
4426 vlinks_t *file_link;
4430 fdr_out = *buf + offset;
4432 for (file_link = file_desc.first;
4433 file_link != (vlinks_t *) NULL;
4434 file_link = file_link->next)
4440 if (file_link->next == (vlinks_t *) NULL)
4441 fil_cnt = file_desc.objects_last_page;
4443 fil_cnt = file_desc.objects_per_page;
4444 fil_ptr = file_link->datum->file;
4445 fil_end = fil_ptr + fil_cnt;
4446 for (; fil_ptr < fil_end; fil_ptr++)
4448 if (*bufend - fdr_out < external_fdr_size)
4449 fdr_out = ecoff_add_bytes (buf, bufend, fdr_out,
4451 (*swap_fdr_out) (stdoutput, &fil_ptr->fdr, fdr_out);
4452 fdr_out += external_fdr_size;
4457 return offset + ifile * external_fdr_size;
4460 /* Set up the external symbols. These are supposed to be handled by
4461 the backend. This routine just gets the right information and
4462 calls a backend function to deal with it. */
4467 register symbolS *sym;
4469 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4471 if (sym->ecoff_symbol == NULL)
4474 /* If this is a local symbol, then force the fields to zero. */
4475 if (! S_IS_EXTERNAL (sym)
4476 && S_IS_DEFINED (sym))
4478 sym->ecoff_symbol->ecoff_sym.asym.value = 0;
4479 sym->ecoff_symbol->ecoff_sym.asym.st = (int) st_Nil;
4480 sym->ecoff_symbol->ecoff_sym.asym.sc = (int) sc_Nil;
4481 sym->ecoff_symbol->ecoff_sym.asym.index = indexNil;
4484 obj_ecoff_set_ext (sym, &sym->ecoff_symbol->ecoff_sym);
4488 /* Build the ECOFF dbeugging information. */
4491 ecoff_build_debug (hdr, bufp, backend)
4494 const struct ecoff_debug_swap *backend;
4496 const bfd_size_type external_pdr_size = backend->external_pdr_size;
4501 efdr_t *hold_file_ptr;
4502 proc_t * hold_proc_ptr;
4506 unsigned long offset;
4508 /* Make sure we have a file. */
4509 if (first_file == (efdr_t *) NULL)
4510 add_file ((const char *) NULL, 0);
4512 /* Handle any top level tags. */
4513 for (ptag = top_tag_head->first_tag;
4514 ptag != (tag_t *) NULL;
4517 if (ptag->forward_ref != (forward_t *) NULL)
4518 add_unknown_tag (ptag);
4520 ptag_next = ptag->same_block;
4521 ptag->hash_ptr->tag_ptr = ptag->same_name;
4525 free_thead (top_tag_head);
4527 /* Look through the symbols. Add debugging information for each
4528 symbol that has not already received it. */
4529 hold_file_ptr = cur_file_ptr;
4530 hold_proc_ptr = cur_proc_ptr;
4531 cur_proc_ptr = (proc_t *) NULL;
4532 for (sym = symbol_rootP; sym != (symbolS *) NULL; sym = symbol_next (sym))
4534 if (sym->ecoff_symbol != NULL
4535 || sym->ecoff_file == (efdr_t *) NULL
4536 || (sym->bsym->flags & BSF_SECTION_SYM) != 0)
4539 cur_file_ptr = sym->ecoff_file;
4540 add_ecoff_symbol ((const char *) NULL, st_Nil, sc_Nil, sym,
4541 S_GET_VALUE (sym), indexNil);
4543 cur_proc_ptr = hold_proc_ptr;
4544 cur_file_ptr = hold_file_ptr;
4546 /* Output an ending symbol for all the files. We have to do this
4547 here for the last file, so we may as well do it for all of the
4550 for (fil_ptr = first_file;
4551 fil_ptr != (efdr_t *) NULL;
4552 fil_ptr = fil_ptr->next_file)
4554 cur_file_ptr = fil_ptr;
4555 while (cur_file_ptr->cur_scope != (scope_t *) NULL
4556 && cur_file_ptr->cur_scope->prev != (scope_t *) NULL)
4558 cur_file_ptr->cur_scope = cur_file_ptr->cur_scope->prev;
4561 as_warn ("Missing .end or .bend at end of file");
4565 if (cur_file_ptr->cur_scope != (scope_t *) NULL)
4566 (void) add_ecoff_symbol ((const char *) NULL,
4573 /* Build the symbolic information. */
4575 buf = xmalloc (PAGE_SIZE);
4576 bufend = buf + PAGE_SIZE;
4578 /* Build the line number information. */
4579 hdr->cbLineOffset = offset;
4580 offset = ecoff_build_lineno (backend, &buf, &bufend, offset,
4582 hdr->cbLine = offset - hdr->cbLineOffset;
4584 /* We don't use dense numbers at all. */
4586 hdr->cbDnOffset = 0;
4588 /* We can't build the PDR table until we have built the symbols,
4589 because a PDR contains a symbol index. However, we set aside
4590 space at this point. */
4591 hdr->ipdMax = proc_cnt;
4592 hdr->cbPdOffset = offset;
4593 if (bufend - (buf + offset) < proc_cnt * external_pdr_size)
4594 (void) ecoff_add_bytes (&buf, &bufend, buf + offset,
4595 proc_cnt * external_pdr_size);
4596 offset += proc_cnt * external_pdr_size;
4598 /* Build the local symbols. */
4599 hdr->cbSymOffset = offset;
4600 offset = ecoff_build_symbols (backend, &buf, &bufend, offset);
4601 hdr->isymMax = (offset - hdr->cbSymOffset) / backend->external_sym_size;
4603 /* Building the symbols initializes the symbol index in the PDR's.
4604 Now we can swap out the PDR's. */
4605 (void) ecoff_build_procs (backend, &buf, &bufend, hdr->cbPdOffset);
4607 /* We don't use optimization symbols. */
4609 hdr->cbOptOffset = 0;
4611 /* Swap out the auxiliary type information. */
4612 hdr->cbAuxOffset = offset;
4613 offset = ecoff_build_aux (backend, &buf, &bufend, offset);
4614 hdr->iauxMax = (offset - hdr->cbAuxOffset) / sizeof (union aux_ext);
4616 /* Copy out the local strings. */
4617 hdr->cbSsOffset = offset;
4618 offset = ecoff_build_ss (backend, &buf, &bufend, offset);
4619 hdr->issMax = offset - hdr->cbSsOffset;
4621 /* We don't use relative file descriptors. */
4623 hdr->cbRfdOffset = 0;
4625 /* Swap out the file descriptors. */
4626 hdr->cbFdOffset = offset;
4627 offset = ecoff_build_fdr (backend, &buf, &bufend, offset);
4628 hdr->ifdMax = (offset - hdr->cbFdOffset) / backend->external_fdr_size;
4630 /* Set up the external symbols, which are handled by the BFD back
4633 hdr->cbSsExtOffset = 0;
4635 hdr->cbExtOffset = 0;
4638 know ((offset & (backend->debug_align - 1)) == 0);
4640 /* FIXME: This value should be determined from the .verstamp directive,
4641 with reasonable defaults in config files. */
4643 hdr->vstamp = 0x030b;
4645 hdr->vstamp = 0x020b;
4652 /* Allocate a cluster of pages. */
4654 #ifndef MALLOC_CHECK
4657 allocate_cluster (npages)
4658 unsigned long npages;
4660 register page_t *value = (page_t *) xmalloc (npages * PAGE_USIZE);
4664 fprintf (stderr, "\talloc\tnpages = %d, value = 0x%.8x\n", npages, value);
4667 memset (value, 0, npages * PAGE_USIZE);
4673 static page_t *cluster_ptr = NULL;
4674 static unsigned long pages_left = 0;
4676 #endif /* MALLOC_CHECK */
4678 /* Allocate one page (which is initialized to 0). */
4683 #ifndef MALLOC_CHECK
4685 if (pages_left == 0)
4687 pages_left = MAX_CLUSTER_PAGES;
4688 cluster_ptr = allocate_cluster (pages_left);
4692 return cluster_ptr++;
4694 #else /* MALLOC_CHECK */
4698 ptr = xmalloc (PAGE_USIZE);
4699 memset (ptr, 0, PAGE_USIZE);
4702 #endif /* MALLOC_CHECK */
4705 /* Allocate scoping information. */
4710 register scope_t *ptr;
4711 static scope_t initial_scope;
4713 #ifndef MALLOC_CHECK
4715 ptr = alloc_counts[(int)alloc_type_scope].free_list.f_scope;
4716 if (ptr != (scope_t *) NULL)
4717 alloc_counts[ (int)alloc_type_scope ].free_list.f_scope = ptr->free;
4720 register int unallocated = alloc_counts[(int)alloc_type_scope].unallocated;
4721 register page_t *cur_page = alloc_counts[(int)alloc_type_scope].cur_page;
4723 if (unallocated == 0)
4725 unallocated = PAGE_SIZE / sizeof (scope_t);
4726 alloc_counts[(int)alloc_type_scope].cur_page = cur_page = allocate_page ();
4727 alloc_counts[(int)alloc_type_scope].total_pages++;
4730 ptr = &cur_page->scope[--unallocated];
4731 alloc_counts[(int)alloc_type_scope].unallocated = unallocated;
4736 ptr = (scope_t *) xmalloc (sizeof (scope_t));
4740 alloc_counts[(int)alloc_type_scope].total_alloc++;
4741 *ptr = initial_scope;
4745 /* Free scoping information. */
4751 alloc_counts[(int)alloc_type_scope].total_free++;
4753 #ifndef MALLOC_CHECK
4754 ptr->free = alloc_counts[(int)alloc_type_scope].free_list.f_scope;
4755 alloc_counts[(int)alloc_type_scope].free_list.f_scope = ptr;
4761 /* Allocate links for pages in a virtual array. */
4766 register vlinks_t *ptr;
4767 static vlinks_t initial_vlinks;
4769 #ifndef MALLOC_CHECK
4771 register int unallocated = alloc_counts[(int)alloc_type_vlinks].unallocated;
4772 register page_t *cur_page = alloc_counts[(int)alloc_type_vlinks].cur_page;
4774 if (unallocated == 0)
4776 unallocated = PAGE_SIZE / sizeof (vlinks_t);
4777 alloc_counts[(int)alloc_type_vlinks].cur_page = cur_page = allocate_page ();
4778 alloc_counts[(int)alloc_type_vlinks].total_pages++;
4781 ptr = &cur_page->vlinks[--unallocated];
4782 alloc_counts[(int)alloc_type_vlinks].unallocated = unallocated;
4786 ptr = (vlinks_t *) xmalloc (sizeof (vlinks_t));
4790 alloc_counts[(int)alloc_type_vlinks].total_alloc++;
4791 *ptr = initial_vlinks;
4795 /* Allocate string hash buckets. */
4800 register shash_t *ptr;
4801 static shash_t initial_shash;
4803 #ifndef MALLOC_CHECK
4805 register int unallocated = alloc_counts[(int)alloc_type_shash].unallocated;
4806 register page_t *cur_page = alloc_counts[(int)alloc_type_shash].cur_page;
4808 if (unallocated == 0)
4810 unallocated = PAGE_SIZE / sizeof (shash_t);
4811 alloc_counts[(int)alloc_type_shash].cur_page = cur_page = allocate_page ();
4812 alloc_counts[(int)alloc_type_shash].total_pages++;
4815 ptr = &cur_page->shash[--unallocated];
4816 alloc_counts[(int)alloc_type_shash].unallocated = unallocated;
4820 ptr = (shash_t *) xmalloc (sizeof (shash_t));
4824 alloc_counts[(int)alloc_type_shash].total_alloc++;
4825 *ptr = initial_shash;
4829 /* Allocate type hash buckets. */
4834 register thash_t *ptr;
4835 static thash_t initial_thash;
4837 #ifndef MALLOC_CHECK
4839 register int unallocated = alloc_counts[(int)alloc_type_thash].unallocated;
4840 register page_t *cur_page = alloc_counts[(int)alloc_type_thash].cur_page;
4842 if (unallocated == 0)
4844 unallocated = PAGE_SIZE / sizeof (thash_t);
4845 alloc_counts[(int)alloc_type_thash].cur_page = cur_page = allocate_page ();
4846 alloc_counts[(int)alloc_type_thash].total_pages++;
4849 ptr = &cur_page->thash[--unallocated];
4850 alloc_counts[(int)alloc_type_thash].unallocated = unallocated;
4854 ptr = (thash_t *) xmalloc (sizeof (thash_t));
4858 alloc_counts[(int)alloc_type_thash].total_alloc++;
4859 *ptr = initial_thash;
4863 /* Allocate structure, union, or enum tag information. */
4868 register tag_t *ptr;
4869 static tag_t initial_tag;
4871 #ifndef MALLOC_CHECK
4873 ptr = alloc_counts[(int)alloc_type_tag].free_list.f_tag;
4874 if (ptr != (tag_t *) NULL)
4875 alloc_counts[(int)alloc_type_tag].free_list.f_tag = ptr->free;
4878 register int unallocated = alloc_counts[(int)alloc_type_tag].unallocated;
4879 register page_t *cur_page = alloc_counts[(int)alloc_type_tag].cur_page;
4881 if (unallocated == 0)
4883 unallocated = PAGE_SIZE / sizeof (tag_t);
4884 alloc_counts[(int)alloc_type_tag].cur_page = cur_page = allocate_page ();
4885 alloc_counts[(int)alloc_type_tag].total_pages++;
4888 ptr = &cur_page->tag[--unallocated];
4889 alloc_counts[(int)alloc_type_tag].unallocated = unallocated;
4894 ptr = (tag_t *) xmalloc (sizeof (tag_t));
4898 alloc_counts[(int)alloc_type_tag].total_alloc++;
4903 /* Free scoping information. */
4909 alloc_counts[(int)alloc_type_tag].total_free++;
4911 #ifndef MALLOC_CHECK
4912 ptr->free = alloc_counts[(int)alloc_type_tag].free_list.f_tag;
4913 alloc_counts[(int)alloc_type_tag].free_list.f_tag = ptr;
4919 /* Allocate forward reference to a yet unknown tag. */
4924 register forward_t *ptr;
4925 static forward_t initial_forward;
4927 #ifndef MALLOC_CHECK
4929 register int unallocated = alloc_counts[(int)alloc_type_forward].unallocated;
4930 register page_t *cur_page = alloc_counts[(int)alloc_type_forward].cur_page;
4932 if (unallocated == 0)
4934 unallocated = PAGE_SIZE / sizeof (forward_t);
4935 alloc_counts[(int)alloc_type_forward].cur_page = cur_page = allocate_page ();
4936 alloc_counts[(int)alloc_type_forward].total_pages++;
4939 ptr = &cur_page->forward[--unallocated];
4940 alloc_counts[(int)alloc_type_forward].unallocated = unallocated;
4944 ptr = (forward_t *) xmalloc (sizeof (forward_t));
4948 alloc_counts[(int)alloc_type_forward].total_alloc++;
4949 *ptr = initial_forward;
4953 /* Allocate head of type hash list. */
4958 register thead_t *ptr;
4959 static thead_t initial_thead;
4961 #ifndef MALLOC_CHECK
4963 ptr = alloc_counts[(int)alloc_type_thead].free_list.f_thead;
4964 if (ptr != (thead_t *) NULL)
4965 alloc_counts[ (int)alloc_type_thead ].free_list.f_thead = ptr->free;
4968 register int unallocated = alloc_counts[(int)alloc_type_thead].unallocated;
4969 register page_t *cur_page = alloc_counts[(int)alloc_type_thead].cur_page;
4971 if (unallocated == 0)
4973 unallocated = PAGE_SIZE / sizeof (thead_t);
4974 alloc_counts[(int)alloc_type_thead].cur_page = cur_page = allocate_page ();
4975 alloc_counts[(int)alloc_type_thead].total_pages++;
4978 ptr = &cur_page->thead[--unallocated];
4979 alloc_counts[(int)alloc_type_thead].unallocated = unallocated;
4984 ptr = (thead_t *) xmalloc (sizeof (thead_t));
4988 alloc_counts[(int)alloc_type_thead].total_alloc++;
4989 *ptr = initial_thead;
4993 /* Free scoping information. */
4999 alloc_counts[(int)alloc_type_thead].total_free++;
5001 #ifndef MALLOC_CHECK
5002 ptr->free = (thead_t *) alloc_counts[(int)alloc_type_thead].free_list.f_thead;
5003 alloc_counts[(int)alloc_type_thead].free_list.f_thead = ptr;
5009 static lineno_list_t *
5010 allocate_lineno_list ()
5012 register lineno_list_t *ptr;
5013 static lineno_list_t initial_lineno_list;
5015 #ifndef MALLOC_CHECK
5017 register int unallocated = alloc_counts[(int)alloc_type_lineno].unallocated;
5018 register page_t *cur_page = alloc_counts[(int)alloc_type_lineno].cur_page;
5020 if (unallocated == 0)
5022 unallocated = PAGE_SIZE / sizeof (lineno_list_t);
5023 alloc_counts[(int)alloc_type_lineno].cur_page = cur_page = allocate_page ();
5024 alloc_counts[(int)alloc_type_lineno].total_pages++;
5027 ptr = &cur_page->lineno[--unallocated];
5028 alloc_counts[(int)alloc_type_lineno].unallocated = unallocated;
5032 ptr = (lineno_list_t *) xmalloc (sizeof (lineno_list_t));
5036 alloc_counts[(int)alloc_type_lineno].total_alloc++;
5037 *ptr = initial_lineno_list;
5042 ecoff_set_gp_prolog_size (sz)
5045 if (cur_proc_ptr == 0)
5048 cur_proc_ptr->pdr.gp_prologue = sz;
5049 if (cur_proc_ptr->pdr.gp_prologue != sz)
5051 as_warn ("GP prologue size exceeds field size, using 0 instead");
5052 cur_proc_ptr->pdr.gp_prologue = 0;
5055 cur_proc_ptr->pdr.gp_used = 1;
5059 generate_ecoff_stab (what, string, type, other, desc)
5066 efdr_t *save_file_ptr = cur_file_ptr;
5072 localsym_t *hold = NULL;
5074 /* We don't handle .stabd. */
5075 if (what != 's' && what != 'n')
5077 as_bad (".stab%c is not supported", what);
5081 /* We ignore the other field. */
5083 as_warn (".stab%c: ignoring non-zero other field", what);
5085 /* Make sure we have a current file. */
5086 if (cur_file_ptr == (efdr_t *) NULL)
5088 add_file ((const char *) NULL, 0);
5089 save_file_ptr = cur_file_ptr;
5092 /* For stabs in ECOFF, the first symbol must be @stabs. This is a
5094 if (stabs_seen == 0)
5097 /* Line number stabs are handled differently, since they have two
5098 values, the line number and the address of the label. We use the
5099 index field (aka desc) to hold the line number, and the value
5100 field to hold the address. The symbol type is st_Label, which
5101 should be different from the other stabs, so that gdb can
5103 if (type == N_SLINE)
5109 listing_source_line ((unsigned int) desc);
5112 dummy_symr.index = desc;
5113 if (dummy_symr.index != desc)
5115 as_warn ("Line number (%d) for .stab%c directive cannot fit in index field (20 bits)",
5120 sym = symbol_find_or_make ((char *)string);
5129 if (listing && (type == N_SO || type == N_SOL))
5130 listing_source_file (string);
5133 sym = symbol_find_or_make ((char *)string);
5137 indx = ECOFF_MARK_STAB (type);
5140 /* Don't store the stabs symbol we are creating as the type of the
5141 ECOFF symbol. We want to compute the type of the ECOFF symbol
5143 if (sym != (symbolS *) NULL)
5144 hold = sym->ecoff_symbol;
5146 (void) add_ecoff_symbol (string, st, sc, sym, value, indx);
5148 if (sym != (symbolS *) NULL)
5149 sym->ecoff_symbol = hold;
5151 /* Restore normal file type. */
5152 cur_file_ptr = save_file_ptr;
5156 ecoff_no_current_file ()
5158 return cur_file_ptr == (efdr_t *) NULL;
5162 ecoff_generate_asm_lineno (filename, lineno)
5163 const char *filename;
5166 lineno_list_t *list;
5168 /* this potential can cause problem, when we start to see stab half the
5169 way thru the file */
5172 ecoff_generate_asm_line_stab(filename, lineno);
5175 if (current_stabs_filename == (char *)NULL || strcmp (current_stabs_filename, filename))
5177 add_file (filename, 0);
5178 generate_asm_lineno = 1;
5181 list = allocate_lineno_list ();
5183 list->next = (lineno_list_t *) NULL;
5184 list->file = cur_file_ptr;
5185 list->proc = cur_proc_ptr;
5186 list->frag = frag_now;
5187 list->paddr = frag_now_fix ();
5188 list->lineno = lineno;
5190 /* A .loc directive will sometimes appear before a .ent directive,
5191 which means that cur_proc_ptr will be NULL here. Arrange to
5193 if (cur_proc_ptr == (proc_t *) NULL)
5197 pl = &noproc_lineno;
5198 while (*pl != (lineno_list_t *) NULL)
5204 *last_lineno_ptr = list;
5205 last_lineno_ptr = &list->next;
5209 static int line_label_cnt = 0;
5211 ecoff_generate_asm_line_stab (filename, lineno)
5217 if (strcmp (current_stabs_filename, filename))
5219 add_file (filename, 0);
5220 generate_asm_lineno = 1;
5224 /* generate local label $LMnn */
5226 sprintf(ll, "$LM%d", line_label_cnt);
5229 /* generate stab for the line */
5230 generate_ecoff_stab ('n', ll, N_SLINE, 0, lineno);
5234 #endif /* ECOFF_DEBUGGING */