1 /* coff object file format
2 Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
4 Free Software Foundation, Inc.
6 This file is part of GAS.
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
23 #define OBJ_HEADER "obj-coff.h"
29 /* I think this is probably always correct. */
30 #ifndef KEEP_RELOC_INFO
31 #define KEEP_RELOC_INFO
34 /* The BFD_ASSEMBLER version of obj_coff_section will use this macro to set
35 a new section's attributes when a directive has no valid flags or the
36 "w" flag is used. This default should be appropriate for most. */
37 #ifndef TC_COFF_SECTION_DEFAULT_ATTRIBUTES
38 #define TC_COFF_SECTION_DEFAULT_ATTRIBUTES (SEC_LOAD | SEC_DATA)
41 static void obj_coff_bss
PARAMS ((int));
42 const char *s_get_name
PARAMS ((symbolS
* s
));
43 static void obj_coff_ln
PARAMS ((int));
44 static void obj_coff_def
PARAMS ((int));
45 static void obj_coff_endef
PARAMS ((int));
46 static void obj_coff_dim
PARAMS ((int));
47 static void obj_coff_line
PARAMS ((int));
48 static void obj_coff_size
PARAMS ((int));
49 static void obj_coff_scl
PARAMS ((int));
50 static void obj_coff_tag
PARAMS ((int));
51 static void obj_coff_val
PARAMS ((int));
52 static void obj_coff_type
PARAMS ((int));
53 static void obj_coff_ident
PARAMS ((int));
55 static void obj_coff_loc
PARAMS((int));
58 /* This is used to hold the symbol built by a sequence of pseudo-ops
59 from .def and .endef. */
60 static symbolS
*def_symbol_in_progress
;
65 unsigned long chunk_size
;
66 unsigned long element_size
;
69 unsigned long pointer
;
74 stack_init (chunk_size
, element_size
)
75 unsigned long chunk_size
;
76 unsigned long element_size
;
80 st
= (stack
*) malloc (sizeof (stack
));
83 st
->data
= malloc (chunk_size
);
90 st
->size
= chunk_size
;
91 st
->chunk_size
= chunk_size
;
92 st
->element_size
= element_size
;
97 /* Not currently used. */
108 stack_push (st
, element
)
112 if (st
->pointer
+ st
->element_size
>= st
->size
)
114 st
->size
+= st
->chunk_size
;
115 if ((st
->data
= xrealloc (st
->data
, st
->size
)) == (char *) 0)
118 memcpy (st
->data
+ st
->pointer
, element
, st
->element_size
);
119 st
->pointer
+= st
->element_size
;
120 return st
->data
+ st
->pointer
;
127 if (st
->pointer
< st
->element_size
)
132 st
->pointer
-= st
->element_size
;
133 return st
->data
+ st
->pointer
;
137 * Maintain a list of the tagnames of the structres.
140 static struct hash_control
*tag_hash
;
145 tag_hash
= hash_new ();
149 tag_insert (name
, symbolP
)
153 const char *error_string
;
155 if ((error_string
= hash_jam (tag_hash
, name
, (char *) symbolP
)))
157 as_fatal (_("Inserting \"%s\" into structure table failed: %s"),
166 #ifdef STRIP_UNDERSCORE
169 #endif /* STRIP_UNDERSCORE */
170 return (symbolS
*) hash_find (tag_hash
, name
);
174 tag_find_or_make (name
)
179 if ((symbolP
= tag_find (name
)) == NULL
)
181 symbolP
= symbol_new (name
, undefined_section
,
182 0, &zero_address_frag
);
184 tag_insert (S_GET_NAME (symbolP
), symbolP
);
186 symbol_table_insert (symbolP
);
193 /* We accept the .bss directive to set the section for backward
194 compatibility with earlier versions of gas. */
197 obj_coff_bss (ignore
)
198 int ignore ATTRIBUTE_UNUSED
;
200 if (*input_line_pointer
== '\n')
201 subseg_new (".bss", get_absolute_expression ());
206 /* Handle .weak. This is a GNU extension. */
209 obj_coff_weak (ignore
)
210 int ignore ATTRIBUTE_UNUSED
;
218 name
= input_line_pointer
;
219 c
= get_symbol_end ();
220 symbolP
= symbol_find_or_make (name
);
221 *input_line_pointer
= c
;
224 #if defined BFD_ASSEMBLER || defined S_SET_WEAK
225 S_SET_WEAK (symbolP
);
229 S_SET_STORAGE_CLASS (symbolP
, C_NT_WEAK
);
231 S_SET_STORAGE_CLASS (symbolP
, C_WEAKEXT
);
236 input_line_pointer
++;
238 if (*input_line_pointer
== '\n')
244 demand_empty_rest_of_line ();
249 static void SA_SET_SYM_TAGNDX
PARAMS ((symbolS
*, symbolS
*));
251 #define GET_FILENAME_STRING(X) \
252 ((char*) (&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1])
256 fetch_coff_debug_section ()
258 static segT debug_section
;
262 s
= bfd_make_debug_symbol (stdoutput
, (char *) 0, 0);
264 debug_section
= s
->section
;
266 return debug_section
;
270 SA_SET_SYM_ENDNDX (sym
, val
)
274 combined_entry_type
*entry
, *p
;
276 entry
= &coffsymbol (symbol_get_bfdsym (sym
))->native
[1];
277 p
= coffsymbol (symbol_get_bfdsym (val
))->native
;
278 entry
->u
.auxent
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.p
= p
;
283 SA_SET_SYM_TAGNDX (sym
, val
)
287 combined_entry_type
*entry
, *p
;
289 entry
= &coffsymbol (symbol_get_bfdsym (sym
))->native
[1];
290 p
= coffsymbol (symbol_get_bfdsym (val
))->native
;
291 entry
->u
.auxent
.x_sym
.x_tagndx
.p
= p
;
296 S_GET_DATA_TYPE (sym
)
299 return coffsymbol (symbol_get_bfdsym (sym
))->native
->u
.syment
.n_type
;
303 S_SET_DATA_TYPE (sym
, val
)
307 coffsymbol (symbol_get_bfdsym (sym
))->native
->u
.syment
.n_type
= val
;
312 S_GET_STORAGE_CLASS (sym
)
315 return coffsymbol (symbol_get_bfdsym (sym
))->native
->u
.syment
.n_sclass
;
319 S_SET_STORAGE_CLASS (sym
, val
)
323 coffsymbol (symbol_get_bfdsym (sym
))->native
->u
.syment
.n_sclass
= val
;
327 /* Merge a debug symbol containing debug information into a normal symbol. */
330 c_symbol_merge (debug
, normal
)
334 S_SET_DATA_TYPE (normal
, S_GET_DATA_TYPE (debug
));
335 S_SET_STORAGE_CLASS (normal
, S_GET_STORAGE_CLASS (debug
));
337 if (S_GET_NUMBER_AUXILIARY (debug
) > S_GET_NUMBER_AUXILIARY (normal
))
339 /* take the most we have */
340 S_SET_NUMBER_AUXILIARY (normal
, S_GET_NUMBER_AUXILIARY (debug
));
343 if (S_GET_NUMBER_AUXILIARY (debug
) > 0)
345 /* Move all the auxiliary information. */
346 memcpy (SYM_AUXINFO (normal
), SYM_AUXINFO (debug
),
347 (S_GET_NUMBER_AUXILIARY (debug
)
348 * sizeof (*SYM_AUXINFO (debug
))));
351 /* Move the debug flags. */
352 SF_SET_DEBUG_FIELD (normal
, SF_GET_DEBUG_FIELD (debug
));
356 c_dot_file_symbol (filename
)
357 const char *filename
;
361 /* BFD converts filename to a .file symbol with an aux entry. It
362 also handles chaining. */
363 symbolP
= symbol_new (filename
, bfd_abs_section_ptr
, 0, &zero_address_frag
);
365 S_SET_STORAGE_CLASS (symbolP
, C_FILE
);
366 S_SET_NUMBER_AUXILIARY (symbolP
, 1);
368 symbol_get_bfdsym (symbolP
)->flags
= BSF_DEBUGGING
;
375 listing_source_file (filename
);
380 /* Make sure that the symbol is first on the symbol chain */
381 if (symbol_rootP
!= symbolP
)
383 symbol_remove (symbolP
, &symbol_rootP
, &symbol_lastP
);
384 symbol_insert (symbolP
, symbol_rootP
, &symbol_rootP
, &symbol_lastP
);
385 } /* if not first on the list */
388 /* Line number handling */
391 struct line_no
*next
;
398 /* Symbol of last function, which we should hang line#s off of. */
399 static symbolS
*line_fsym
;
401 #define in_function() (line_fsym != 0)
402 #define clear_function() (line_fsym = 0)
403 #define set_function(F) (line_fsym = (F), coff_add_linesym (F))
407 coff_obj_symbol_new_hook (symbolP
)
410 long sz
= (OBJ_COFF_MAX_AUXENTRIES
+ 1) * sizeof (combined_entry_type
);
411 char * s
= (char *) xmalloc (sz
);
414 coffsymbol (symbol_get_bfdsym (symbolP
))->native
= (combined_entry_type
*) s
;
416 S_SET_DATA_TYPE (symbolP
, T_NULL
);
417 S_SET_STORAGE_CLASS (symbolP
, 0);
418 S_SET_NUMBER_AUXILIARY (symbolP
, 0);
420 if (S_IS_STRING (symbolP
))
421 SF_SET_STRING (symbolP
);
423 if (S_IS_LOCAL (symbolP
))
424 SF_SET_LOCAL (symbolP
);
429 * Handle .ln directives.
432 static symbolS
*current_lineno_sym
;
433 static struct line_no
*line_nos
;
434 /* @@ Blindly assume all .ln directives will be in the .text section... */
438 add_lineno (frag
, offset
, num
)
443 struct line_no
*new_line
=
444 (struct line_no
*) xmalloc (sizeof (struct line_no
));
445 if (!current_lineno_sym
)
451 /* The native aix assembler accepts negative line number */
455 /* Zero is used as an end marker in the file. */
456 as_warn (_("Line numbers must be positive integers\n"));
459 #endif /* OBJ_XCOFF */
460 new_line
->next
= line_nos
;
461 new_line
->frag
= frag
;
462 new_line
->l
.line_number
= num
;
463 new_line
->l
.u
.offset
= offset
;
469 coff_add_linesym (sym
)
474 coffsymbol (symbol_get_bfdsym (current_lineno_sym
))->lineno
=
479 current_lineno_sym
= sym
;
483 obj_coff_ln (appline
)
488 if (! appline
&& def_symbol_in_progress
!= NULL
)
490 as_warn (_(".ln pseudo-op inside .def/.endef: ignored."));
491 demand_empty_rest_of_line ();
495 l
= get_absolute_expression ();
498 add_lineno (frag_now
, frag_now_fix (), l
);
502 new_logical_line ((char *) NULL
, l
- 1);
511 l
+= coff_line_base
- 1;
512 listing_source_line (l
);
517 demand_empty_rest_of_line ();
520 /* .loc is essentially the same as .ln; parse it for assembler
524 obj_coff_loc (ignore
)
525 int ignore ATTRIBUTE_UNUSED
;
529 /* FIXME: Why do we need this check? We need it for ECOFF, but why
530 do we need it for COFF? */
531 if (now_seg
!= text_section
)
533 as_warn (_(".loc outside of .text"));
534 demand_empty_rest_of_line ();
538 if (def_symbol_in_progress
!= NULL
)
540 as_warn (_(".loc pseudo-op inside .def/.endef: ignored."));
541 demand_empty_rest_of_line ();
545 /* Skip the file number. */
547 get_absolute_expression ();
550 lineno
= get_absolute_expression ();
558 lineno
+= coff_line_base
- 1;
559 listing_source_line (lineno
);
564 demand_empty_rest_of_line ();
566 add_lineno (frag_now
, frag_now_fix (), lineno
);
569 /* Handle the .ident pseudo-op. */
572 obj_coff_ident (ignore
)
573 int ignore ATTRIBUTE_UNUSED
;
575 segT current_seg
= now_seg
;
576 subsegT current_subseg
= now_subseg
;
582 /* We could put it in .comment, but that creates an extra section
583 that shouldn't be loaded into memory, which requires linker
584 changes... For now, until proven otherwise, use .rdata. */
585 sec
= subseg_new (".rdata$zzz", 0);
586 bfd_set_section_flags (stdoutput
, sec
,
587 ((SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_DATA
)
588 & bfd_applicable_section_flags (stdoutput
)));
591 subseg_new (".comment", 0);
595 subseg_set (current_seg
, current_subseg
);
601 * Handle .def directives.
603 * One might ask : why can't we symbol_new if the symbol does not
604 * already exist and fill it with debug information. Because of
605 * the C_EFCN special symbol. It would clobber the value of the
606 * function symbol before we have a chance to notice that it is
607 * a C_EFCN. And a second reason is that the code is more clear this
608 * way. (at least I think it is :-).
612 #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';')
613 #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \
614 *input_line_pointer == '\t') \
615 input_line_pointer++;
619 int what ATTRIBUTE_UNUSED
;
621 char name_end
; /* Char after the end of name */
622 char *symbol_name
; /* Name of the debug symbol */
623 char *symbol_name_copy
; /* Temporary copy of the name */
624 unsigned int symbol_name_length
;
626 if (def_symbol_in_progress
!= NULL
)
628 as_warn (_(".def pseudo-op used inside of .def/.endef: ignored."));
629 demand_empty_rest_of_line ();
631 } /* if not inside .def/.endef */
635 symbol_name
= input_line_pointer
;
636 #ifdef STRIP_UNDERSCORE
637 if (symbol_name
[0] == '_' && symbol_name
[1] != 0)
639 #endif /* STRIP_UNDERSCORE */
641 name_end
= get_symbol_end ();
642 symbol_name_length
= strlen (symbol_name
);
643 symbol_name_copy
= xmalloc (symbol_name_length
+ 1);
644 strcpy (symbol_name_copy
, symbol_name
);
645 #ifdef tc_canonicalize_symbol_name
646 symbol_name_copy
= tc_canonicalize_symbol_name (symbol_name_copy
);
649 /* Initialize the new symbol */
650 def_symbol_in_progress
= symbol_make (symbol_name_copy
);
651 symbol_set_frag (def_symbol_in_progress
, &zero_address_frag
);
652 S_SET_VALUE (def_symbol_in_progress
, 0);
654 if (S_IS_STRING (def_symbol_in_progress
))
655 SF_SET_STRING (def_symbol_in_progress
);
657 *input_line_pointer
= name_end
;
659 demand_empty_rest_of_line ();
662 unsigned int dim_index
;
665 obj_coff_endef (ignore
)
666 int ignore ATTRIBUTE_UNUSED
;
668 symbolS
*symbolP
= NULL
;
670 /* DIM BUG FIX sac@cygnus.com */
672 if (def_symbol_in_progress
== NULL
)
674 as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored."));
675 demand_empty_rest_of_line ();
677 } /* if not inside .def/.endef */
679 /* Set the section number according to storage class. */
680 switch (S_GET_STORAGE_CLASS (def_symbol_in_progress
))
685 SF_SET_TAG (def_symbol_in_progress
);
686 /* intentional fallthrough */
689 SF_SET_DEBUG (def_symbol_in_progress
);
690 S_SET_SEGMENT (def_symbol_in_progress
, fetch_coff_debug_section ());
694 SF_SET_LOCAL (def_symbol_in_progress
); /* Do not emit this symbol. */
695 /* intentional fallthrough */
697 SF_SET_PROCESS (def_symbol_in_progress
); /* Will need processing before writing */
698 /* intentional fallthrough */
702 S_SET_SEGMENT (def_symbol_in_progress
, text_section
);
704 name
= S_GET_NAME (def_symbol_in_progress
);
705 if (name
[0] == '.' && name
[2] == 'f' && name
[3] == '\0')
711 if (! in_function ())
712 as_warn (_("`%s' symbol without preceding function"), name
);
713 /* Will need relocating. */
714 SF_SET_PROCESS (def_symbol_in_progress
);
720 /* The MS compilers output the actual endline, not the
721 function-relative one... we want to match without
722 changing the assembler input. */
723 SA_SET_SYM_LNNO (def_symbol_in_progress
,
724 (SA_GET_SYM_LNNO (def_symbol_in_progress
)
735 #endif /* C_AUTOARG */
742 /* According to the COFF documentation:
744 http://osr5doc.sco.com:1996/topics/COFF_SectNumFld.html
746 A special section number (-2) marks symbolic debugging symbols,
747 including structure/union/enumeration tag names, typedefs, and
748 the name of the file. A section number of -1 indicates that the
749 symbol has a value but is not relocatable. Examples of
750 absolute-valued symbols include automatic and register variables,
751 function arguments, and .eos symbols.
753 But from Ian Lance Taylor:
755 http://sources.redhat.com/ml/binutils/2000-08/msg00202.html
757 the actual tools all marked them as section -1. So the GNU COFF
758 assembler follows historical COFF assemblers.
760 However, it causes problems for djgpp
762 http://sources.redhat.com/ml/binutils/2000-08/msg00210.html
764 By defining STRICTCOFF, a COFF port can make the assembler to
765 follow the documented behavior. */
772 SF_SET_DEBUG (def_symbol_in_progress
);
773 S_SET_SEGMENT (def_symbol_in_progress
, absolute_section
);
781 S_SET_SEGMENT (def_symbol_in_progress
, absolute_section
);
792 /* Valid but set somewhere else (s_comm, s_lcomm, colon) */
799 as_warn (_("unexpected storage class %d"),
800 S_GET_STORAGE_CLASS (def_symbol_in_progress
));
802 } /* switch on storage class */
804 /* Now that we have built a debug symbol, try to find if we should
805 merge with an existing symbol or not. If a symbol is C_EFCN or
806 absolute_section or untagged SEG_DEBUG it never merges. We also
807 don't merge labels, which are in a different namespace, nor
808 symbols which have not yet been defined since they are typically
809 unique, nor do we merge tags with non-tags. */
811 /* Two cases for functions. Either debug followed by definition or
812 definition followed by debug. For definition first, we will
813 merge the debug symbol into the definition. For debug first, the
814 lineno entry MUST point to the definition function or else it
815 will point off into space when obj_crawl_symbol_chain() merges
816 the debug symbol into the real symbol. Therefor, let's presume
817 the debug symbol is a real function reference. */
819 /* FIXME-SOON If for some reason the definition label/symbol is
820 never seen, this will probably leave an undefined symbol at link
823 if (S_GET_STORAGE_CLASS (def_symbol_in_progress
) == C_EFCN
824 || S_GET_STORAGE_CLASS (def_symbol_in_progress
) == C_LABEL
825 || (!strcmp (bfd_get_section_name (stdoutput
,
826 S_GET_SEGMENT (def_symbol_in_progress
)),
828 && !SF_GET_TAG (def_symbol_in_progress
))
829 || S_GET_SEGMENT (def_symbol_in_progress
) == absolute_section
830 || ! symbol_constant_p (def_symbol_in_progress
)
831 || (symbolP
= symbol_find_base (S_GET_NAME (def_symbol_in_progress
),
832 DO_NOT_STRIP
)) == NULL
833 || SF_GET_TAG (def_symbol_in_progress
) != SF_GET_TAG (symbolP
))
835 /* If it already is at the end of the symbol list, do nothing */
836 if (def_symbol_in_progress
!= symbol_lastP
)
838 symbol_remove (def_symbol_in_progress
, &symbol_rootP
, &symbol_lastP
);
839 symbol_append (def_symbol_in_progress
, symbol_lastP
, &symbol_rootP
,
845 /* This symbol already exists, merge the newly created symbol
846 into the old one. This is not mandatory. The linker can
847 handle duplicate symbols correctly. But I guess that it save
848 a *lot* of space if the assembly file defines a lot of
851 /* The debug entry (def_symbol_in_progress) is merged into the
852 previous definition. */
854 c_symbol_merge (def_symbol_in_progress
, symbolP
);
855 symbol_remove (def_symbol_in_progress
, &symbol_rootP
, &symbol_lastP
);
857 def_symbol_in_progress
= symbolP
;
859 if (SF_GET_FUNCTION (def_symbol_in_progress
)
860 || SF_GET_TAG (def_symbol_in_progress
)
861 || S_GET_STORAGE_CLASS (def_symbol_in_progress
) == C_STAT
)
863 /* For functions, and tags, and static symbols, the symbol
864 *must* be where the debug symbol appears. Move the
865 existing symbol to the current place. */
866 /* If it already is at the end of the symbol list, do nothing */
867 if (def_symbol_in_progress
!= symbol_lastP
)
869 symbol_remove (def_symbol_in_progress
, &symbol_rootP
, &symbol_lastP
);
870 symbol_append (def_symbol_in_progress
, symbol_lastP
, &symbol_rootP
, &symbol_lastP
);
875 if (SF_GET_TAG (def_symbol_in_progress
))
879 oldtag
= symbol_find_base (S_GET_NAME (def_symbol_in_progress
),
881 if (oldtag
== NULL
|| ! SF_GET_TAG (oldtag
))
882 tag_insert (S_GET_NAME (def_symbol_in_progress
),
883 def_symbol_in_progress
);
886 if (SF_GET_FUNCTION (def_symbol_in_progress
))
888 know (sizeof (def_symbol_in_progress
) <= sizeof (long));
889 set_function (def_symbol_in_progress
);
890 SF_SET_PROCESS (def_symbol_in_progress
);
894 /* That is, if this is the first time we've seen the
896 symbol_table_insert (def_symbol_in_progress
);
897 } /* definition follows debug */
898 } /* Create the line number entry pointing to the function being defined */
900 def_symbol_in_progress
= NULL
;
901 demand_empty_rest_of_line ();
905 obj_coff_dim (ignore
)
906 int ignore ATTRIBUTE_UNUSED
;
910 if (def_symbol_in_progress
== NULL
)
912 as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored."));
913 demand_empty_rest_of_line ();
915 } /* if not inside .def/.endef */
917 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress
, 1);
919 for (dim_index
= 0; dim_index
< DIMNUM
; dim_index
++)
922 SA_SET_SYM_DIMEN (def_symbol_in_progress
, dim_index
,
923 get_absolute_expression ());
925 switch (*input_line_pointer
)
928 input_line_pointer
++;
932 as_warn (_("badly formed .dim directive ignored"));
933 /* intentional fallthrough */
941 demand_empty_rest_of_line ();
945 obj_coff_line (ignore
)
946 int ignore ATTRIBUTE_UNUSED
;
950 if (def_symbol_in_progress
== NULL
)
952 /* Probably stabs-style line? */
957 this_base
= get_absolute_expression ();
958 if (!strcmp (".bf", S_GET_NAME (def_symbol_in_progress
)))
959 coff_line_base
= this_base
;
961 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress
, 1);
962 SA_SET_SYM_LNNO (def_symbol_in_progress
, this_base
);
964 demand_empty_rest_of_line ();
967 if (strcmp (".bf", S_GET_NAME (def_symbol_in_progress
)) == 0)
972 listing_source_line ((unsigned int) this_base
);
978 obj_coff_size (ignore
)
979 int ignore ATTRIBUTE_UNUSED
;
981 if (def_symbol_in_progress
== NULL
)
983 as_warn (_(".size pseudo-op used outside of .def/.endef ignored."));
984 demand_empty_rest_of_line ();
986 } /* if not inside .def/.endef */
988 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress
, 1);
989 SA_SET_SYM_SIZE (def_symbol_in_progress
, get_absolute_expression ());
990 demand_empty_rest_of_line ();
994 obj_coff_scl (ignore
)
995 int ignore ATTRIBUTE_UNUSED
;
997 if (def_symbol_in_progress
== NULL
)
999 as_warn (_(".scl pseudo-op used outside of .def/.endef ignored."));
1000 demand_empty_rest_of_line ();
1002 } /* if not inside .def/.endef */
1004 S_SET_STORAGE_CLASS (def_symbol_in_progress
, get_absolute_expression ());
1005 demand_empty_rest_of_line ();
1009 obj_coff_tag (ignore
)
1010 int ignore ATTRIBUTE_UNUSED
;
1015 if (def_symbol_in_progress
== NULL
)
1017 as_warn (_(".tag pseudo-op used outside of .def/.endef ignored."));
1018 demand_empty_rest_of_line ();
1022 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress
, 1);
1023 symbol_name
= input_line_pointer
;
1024 name_end
= get_symbol_end ();
1026 #ifdef tc_canonicalize_symbol_name
1027 symbol_name
= tc_canonicalize_symbol_name (symbol_name
);
1030 /* Assume that the symbol referred to by .tag is always defined.
1031 This was a bad assumption. I've added find_or_make. xoxorich. */
1032 SA_SET_SYM_TAGNDX (def_symbol_in_progress
,
1033 tag_find_or_make (symbol_name
));
1034 if (SA_GET_SYM_TAGNDX (def_symbol_in_progress
) == 0L)
1036 as_warn (_("tag not found for .tag %s"), symbol_name
);
1039 SF_SET_TAGGED (def_symbol_in_progress
);
1040 *input_line_pointer
= name_end
;
1042 demand_empty_rest_of_line ();
1046 obj_coff_type (ignore
)
1047 int ignore ATTRIBUTE_UNUSED
;
1049 if (def_symbol_in_progress
== NULL
)
1051 as_warn (_(".type pseudo-op used outside of .def/.endef ignored."));
1052 demand_empty_rest_of_line ();
1054 } /* if not inside .def/.endef */
1056 S_SET_DATA_TYPE (def_symbol_in_progress
, get_absolute_expression ());
1058 if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress
)) &&
1059 S_GET_STORAGE_CLASS (def_symbol_in_progress
) != C_TPDEF
)
1061 SF_SET_FUNCTION (def_symbol_in_progress
);
1062 } /* is a function */
1064 demand_empty_rest_of_line ();
1068 obj_coff_val (ignore
)
1069 int ignore ATTRIBUTE_UNUSED
;
1071 if (def_symbol_in_progress
== NULL
)
1073 as_warn (_(".val pseudo-op used outside of .def/.endef ignored."));
1074 demand_empty_rest_of_line ();
1076 } /* if not inside .def/.endef */
1078 if (is_name_beginner (*input_line_pointer
))
1080 char *symbol_name
= input_line_pointer
;
1081 char name_end
= get_symbol_end ();
1083 #ifdef tc_canonicalize_symbol_name
1084 symbol_name
= tc_canonicalize_symbol_name (symbol_name
);
1086 if (!strcmp (symbol_name
, "."))
1088 symbol_set_frag (def_symbol_in_progress
, frag_now
);
1089 S_SET_VALUE (def_symbol_in_progress
, (valueT
) frag_now_fix ());
1090 /* If the .val is != from the .def (e.g. statics) */
1092 else if (strcmp (S_GET_NAME (def_symbol_in_progress
), symbol_name
))
1096 exp
.X_op
= O_symbol
;
1097 exp
.X_add_symbol
= symbol_find_or_make (symbol_name
);
1098 exp
.X_op_symbol
= NULL
;
1099 exp
.X_add_number
= 0;
1100 symbol_set_value_expression (def_symbol_in_progress
, &exp
);
1102 /* If the segment is undefined when the forward reference is
1103 resolved, then copy the segment id from the forward
1105 SF_SET_GET_SEGMENT (def_symbol_in_progress
);
1107 /* FIXME: gcc can generate address expressions here in
1108 unusual cases (search for "obscure" in sdbout.c). We
1109 just ignore the offset here, thus generating incorrect
1110 debugging information. We ignore the rest of the line
1113 /* Otherwise, it is the name of a non debug symbol and its value
1114 will be calculated later. */
1115 *input_line_pointer
= name_end
;
1119 S_SET_VALUE (def_symbol_in_progress
, get_absolute_expression ());
1120 } /* if symbol based */
1122 demand_empty_rest_of_line ();
1126 coff_obj_read_begin_hook ()
1128 /* These had better be the same. Usually 18 bytes. */
1130 know (sizeof (SYMENT
) == sizeof (AUXENT
));
1131 know (SYMESZ
== AUXESZ
);
1136 symbolS
*coff_last_function
;
1137 static symbolS
*coff_last_bf
;
1140 coff_frob_symbol (symp
, punt
)
1144 static symbolS
*last_tagP
;
1145 static stack
*block_stack
;
1146 static symbolS
*set_end
;
1147 symbolS
*next_set_end
= NULL
;
1149 if (symp
== &abs_symbol
)
1155 if (current_lineno_sym
)
1156 coff_add_linesym ((symbolS
*) 0);
1159 block_stack
= stack_init (512, sizeof (symbolS
*));
1161 if (S_IS_WEAK (symp
))
1164 S_SET_STORAGE_CLASS (symp
, C_NT_WEAK
);
1166 S_SET_STORAGE_CLASS (symp
, C_WEAKEXT
);
1170 if (!S_IS_DEFINED (symp
)
1171 && !S_IS_WEAK (symp
)
1172 && S_GET_STORAGE_CLASS (symp
) != C_STAT
)
1173 S_SET_STORAGE_CLASS (symp
, C_EXT
);
1175 if (!SF_GET_DEBUG (symp
))
1178 if (!SF_GET_LOCAL (symp
)
1179 && !SF_GET_STATICS (symp
)
1180 && S_GET_STORAGE_CLASS (symp
) != C_LABEL
1181 && symbol_constant_p(symp
)
1182 && (real
= symbol_find_base (S_GET_NAME (symp
), DO_NOT_STRIP
))
1185 c_symbol_merge (symp
, real
);
1189 if (!S_IS_DEFINED (symp
) && !SF_GET_LOCAL (symp
))
1191 assert (S_GET_VALUE (symp
) == 0);
1192 S_SET_EXTERNAL (symp
);
1194 else if (S_GET_STORAGE_CLASS (symp
) == C_NULL
)
1196 if (S_GET_SEGMENT (symp
) == text_section
1197 && symp
!= seg_info (text_section
)->sym
)
1198 S_SET_STORAGE_CLASS (symp
, C_LABEL
);
1200 S_SET_STORAGE_CLASS (symp
, C_STAT
);
1202 if (SF_GET_PROCESS (symp
))
1204 if (S_GET_STORAGE_CLASS (symp
) == C_BLOCK
)
1206 if (!strcmp (S_GET_NAME (symp
), ".bb"))
1207 stack_push (block_stack
, (char *) &symp
);
1211 begin
= *(symbolS
**) stack_pop (block_stack
);
1213 as_warn (_("mismatched .eb"));
1215 next_set_end
= begin
;
1218 if (coff_last_function
== 0 && SF_GET_FUNCTION (symp
))
1220 union internal_auxent
*auxp
;
1221 coff_last_function
= symp
;
1222 if (S_GET_NUMBER_AUXILIARY (symp
) < 1)
1223 S_SET_NUMBER_AUXILIARY (symp
, 1);
1224 auxp
= SYM_AUXENT (symp
);
1225 memset (auxp
->x_sym
.x_fcnary
.x_ary
.x_dimen
, 0,
1226 sizeof (auxp
->x_sym
.x_fcnary
.x_ary
.x_dimen
));
1228 if (S_GET_STORAGE_CLASS (symp
) == C_EFCN
)
1230 if (coff_last_function
== 0)
1231 as_fatal (_("C_EFCN symbol out of scope"));
1232 SA_SET_SYM_FSIZE (coff_last_function
,
1233 (long) (S_GET_VALUE (symp
)
1234 - S_GET_VALUE (coff_last_function
)));
1235 next_set_end
= coff_last_function
;
1236 coff_last_function
= 0;
1239 if (S_IS_EXTERNAL (symp
))
1240 S_SET_STORAGE_CLASS (symp
, C_EXT
);
1241 else if (SF_GET_LOCAL (symp
))
1244 if (SF_GET_FUNCTION (symp
))
1245 symbol_get_bfdsym (symp
)->flags
|= BSF_FUNCTION
;
1250 /* Double check weak symbols. */
1251 if (S_IS_WEAK (symp
) && S_IS_COMMON (symp
))
1252 as_bad (_("Symbol `%s' can not be both weak and common"),
1255 if (SF_GET_TAG (symp
))
1257 else if (S_GET_STORAGE_CLASS (symp
) == C_EOS
)
1258 next_set_end
= last_tagP
;
1261 /* This is pretty horrible, but we have to set *punt correctly in
1262 order to call SA_SET_SYM_ENDNDX correctly. */
1263 if (! symbol_used_in_reloc_p (symp
)
1264 && ((symbol_get_bfdsym (symp
)->flags
& BSF_SECTION_SYM
) != 0
1265 || (! S_IS_EXTERNAL (symp
)
1266 && ! symbol_get_tc (symp
)->output
1267 && S_GET_STORAGE_CLASS (symp
) != C_FILE
)))
1271 if (set_end
!= (symbolS
*) NULL
1273 && ((symbol_get_bfdsym (symp
)->flags
& BSF_NOT_AT_END
) != 0
1274 || (S_IS_DEFINED (symp
)
1275 && ! S_IS_COMMON (symp
)
1276 && (! S_IS_EXTERNAL (symp
) || SF_GET_FUNCTION (symp
)))))
1278 SA_SET_SYM_ENDNDX (set_end
, symp
);
1282 if (next_set_end
!= NULL
)
1284 if (set_end
!= NULL
)
1285 as_warn ("Warning: internal error: forgetting to set endndx of %s",
1286 S_GET_NAME (set_end
));
1287 set_end
= next_set_end
;
1291 && S_GET_STORAGE_CLASS (symp
) == C_FCN
1292 && strcmp (S_GET_NAME (symp
), ".bf") == 0)
1294 if (coff_last_bf
!= NULL
)
1295 SA_SET_SYM_ENDNDX (coff_last_bf
, symp
);
1296 coff_last_bf
= symp
;
1299 if (coffsymbol (symbol_get_bfdsym (symp
))->lineno
)
1302 struct line_no
*lptr
;
1305 lptr
= (struct line_no
*) coffsymbol (symbol_get_bfdsym (symp
))->lineno
;
1306 for (i
= 0; lptr
; lptr
= lptr
->next
)
1308 lptr
= (struct line_no
*) coffsymbol (symbol_get_bfdsym (symp
))->lineno
;
1310 /* We need i entries for line numbers, plus 1 for the first
1311 entry which BFD will override, plus 1 for the last zero
1312 entry (a marker for BFD). */
1313 l
= (alent
*) xmalloc ((i
+ 2) * sizeof (alent
));
1314 coffsymbol (symbol_get_bfdsym (symp
))->lineno
= l
;
1315 l
[i
+ 1].line_number
= 0;
1316 l
[i
+ 1].u
.sym
= NULL
;
1320 lptr
->l
.u
.offset
+= lptr
->frag
->fr_address
/ OCTETS_PER_BYTE
;
1328 coff_adjust_section_syms (abfd
, sec
, x
)
1329 bfd
*abfd ATTRIBUTE_UNUSED
;
1331 PTR x ATTRIBUTE_UNUSED
;
1334 segment_info_type
*seginfo
= seg_info (sec
);
1335 int nlnno
, nrelocs
= 0;
1337 /* RS/6000 gas creates a .debug section manually in ppc_frob_file in
1338 tc-ppc.c. Do not get confused by it. */
1339 if (seginfo
== NULL
)
1342 if (!strcmp (sec
->name
, ".text"))
1343 nlnno
= coff_n_line_nos
;
1347 /* @@ Hope that none of the fixups expand to more than one reloc
1349 fixS
*fixp
= seginfo
->fix_root
;
1352 if (! fixp
->fx_done
)
1354 fixp
= fixp
->fx_next
;
1357 if (bfd_get_section_size_before_reloc (sec
) == 0
1360 && sec
!= text_section
1361 && sec
!= data_section
1362 && sec
!= bss_section
)
1364 secsym
= section_symbol (sec
);
1365 /* This is an estimate; we'll plug in the real value using
1366 SET_SECTION_RELOCS later */
1367 SA_SET_SCN_NRELOC (secsym
, nrelocs
);
1368 SA_SET_SCN_NLINNO (secsym
, nlnno
);
1372 coff_frob_file_after_relocs ()
1374 bfd_map_over_sections (stdoutput
, coff_adjust_section_syms
, (char*) 0);
1378 * implement the .section pseudo op:
1379 * .section name {, "flags"}
1381 * | +--- optional flags: 'b' for bss
1383 * +-- section name 'l' for lib
1387 * 'd' (apparently m88k for data)
1389 * 'r' for read-only data
1390 * 's' for shared data (PE)
1391 * But if the argument is not a quoted string, treat it as a
1392 * subsegment number.
1396 obj_coff_section (ignore
)
1397 int ignore ATTRIBUTE_UNUSED
;
1399 /* Strip out the section name */
1404 flagword flags
, oldflags
;
1415 section_name
= input_line_pointer
;
1416 c
= get_symbol_end ();
1418 name
= xmalloc (input_line_pointer
- section_name
+ 1);
1419 strcpy (name
, section_name
);
1421 *input_line_pointer
= c
;
1426 flags
= SEC_NO_FLAGS
;
1428 if (*input_line_pointer
== ',')
1430 ++input_line_pointer
;
1432 if (*input_line_pointer
!= '"')
1433 exp
= get_absolute_expression ();
1436 ++input_line_pointer
;
1437 while (*input_line_pointer
!= '"'
1438 && ! is_end_of_line
[(unsigned char) *input_line_pointer
])
1440 switch (*input_line_pointer
)
1442 case 'b': flags
|= SEC_ALLOC
; flags
&=~ SEC_LOAD
; break;
1443 case 'n': flags
&=~ SEC_LOAD
; flags
|= SEC_NEVER_LOAD
; break;
1444 case 'd': flags
|= SEC_DATA
| SEC_LOAD
; /* fall through */
1445 case 'w': flags
&=~ SEC_READONLY
; break;
1446 case 'x': flags
|= SEC_CODE
| SEC_LOAD
; break;
1447 case 'r': flags
|= SEC_READONLY
; break;
1448 case 's': flags
|= SEC_SHARED
; break;
1450 case 'i': /* STYP_INFO */
1451 case 'l': /* STYP_LIB */
1452 case 'o': /* STYP_OVER */
1453 as_warn (_("unsupported section attribute '%c'"),
1454 *input_line_pointer
);
1458 as_warn(_("unknown section attribute '%c'"),
1459 *input_line_pointer
);
1462 ++input_line_pointer
;
1464 if (*input_line_pointer
== '"')
1465 ++input_line_pointer
;
1469 sec
= subseg_new (name
, (subsegT
) exp
);
1471 oldflags
= bfd_get_section_flags (stdoutput
, sec
);
1472 if (oldflags
== SEC_NO_FLAGS
)
1474 /* Set section flags for a new section just created by subseg_new.
1475 Provide a default if no flags were parsed. */
1476 if (flags
== SEC_NO_FLAGS
)
1477 flags
= TC_COFF_SECTION_DEFAULT_ATTRIBUTES
;
1479 #ifdef COFF_LONG_SECTION_NAMES
1480 /* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce
1481 sections so adjust_reloc_syms in write.c will correctly handle
1482 relocs which refer to non-local symbols in these sections. */
1483 if (strncmp (name
, ".gnu.linkonce", sizeof (".gnu.linkonce") - 1) == 0)
1484 flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
1487 if (! bfd_set_section_flags (stdoutput
, sec
, flags
))
1488 as_warn (_("error setting flags for \"%s\": %s"),
1489 bfd_section_name (stdoutput
, sec
),
1490 bfd_errmsg (bfd_get_error ()));
1492 else if (flags
!= SEC_NO_FLAGS
)
1494 /* This section's attributes have already been set. Warn if the
1495 attributes don't match. */
1496 flagword matchflags
= SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
| SEC_CODE
1497 | SEC_DATA
| SEC_SHARED
| SEC_NEVER_LOAD
;
1498 if ((flags
^ oldflags
) & matchflags
)
1499 as_warn (_("Ignoring changed section attributes for %s"), name
);
1502 demand_empty_rest_of_line ();
1506 coff_adjust_symtab ()
1508 if (symbol_rootP
== NULL
1509 || S_GET_STORAGE_CLASS (symbol_rootP
) != C_FILE
)
1510 c_dot_file_symbol ("fake");
1514 coff_frob_section (sec
)
1520 bfd_vma size
, n_entries
, mask
;
1521 bfd_vma align_power
= (bfd_vma
)sec
->alignment_power
+ OCTETS_PER_BYTE_POWER
;
1523 /* The COFF back end in BFD requires that all section sizes be
1524 rounded up to multiples of the corresponding section alignments,
1525 supposedly because standard COFF has no other way of encoding alignment
1526 for sections. If your COFF flavor has a different way of encoding
1527 section alignment, then skip this step, as TICOFF does. */
1528 size
= bfd_get_section_size_before_reloc (sec
);
1529 mask
= ((bfd_vma
) 1 << align_power
) - 1;
1530 #if !defined(TICOFF)
1536 new_size
= (size
+ mask
) & ~mask
;
1537 bfd_set_section_size (stdoutput
, sec
, new_size
);
1539 /* If the size had to be rounded up, add some padding in
1540 the last non-empty frag. */
1541 fragp
= seg_info (sec
)->frchainP
->frch_root
;
1542 last
= seg_info (sec
)->frchainP
->frch_last
;
1543 while (fragp
->fr_next
!= last
)
1544 fragp
= fragp
->fr_next
;
1545 last
->fr_address
= size
;
1546 fragp
->fr_offset
+= new_size
- size
;
1550 /* If the section size is non-zero, the section symbol needs an aux
1551 entry associated with it, indicating the size. We don't know
1552 all the values yet; coff_frob_symbol will fill them in later. */
1555 || sec
== text_section
1556 || sec
== data_section
1557 || sec
== bss_section
)
1560 symbolS
*secsym
= section_symbol (sec
);
1562 S_SET_STORAGE_CLASS (secsym
, C_STAT
);
1563 S_SET_NUMBER_AUXILIARY (secsym
, 1);
1564 SF_SET_STATICS (secsym
);
1565 SA_SET_SCN_SCNLEN (secsym
, size
);
1568 /* @@ these should be in a "stabs.h" file, or maybe as.h */
1569 #ifndef STAB_SECTION_NAME
1570 #define STAB_SECTION_NAME ".stab"
1572 #ifndef STAB_STRING_SECTION_NAME
1573 #define STAB_STRING_SECTION_NAME ".stabstr"
1575 if (strcmp (STAB_STRING_SECTION_NAME
, sec
->name
))
1579 sec
= subseg_get (STAB_SECTION_NAME
, 0);
1580 /* size is already rounded up, since other section will be listed first */
1581 size
= bfd_get_section_size_before_reloc (strsec
);
1583 n_entries
= bfd_get_section_size_before_reloc (sec
) / 12 - 1;
1585 /* Find first non-empty frag. It should be large enough. */
1586 fragp
= seg_info (sec
)->frchainP
->frch_root
;
1587 while (fragp
&& fragp
->fr_fix
== 0)
1588 fragp
= fragp
->fr_next
;
1589 assert (fragp
!= 0 && fragp
->fr_fix
>= 12);
1591 /* Store the values. */
1592 p
= fragp
->fr_literal
;
1593 bfd_h_put_16 (stdoutput
, n_entries
, (bfd_byte
*) p
+ 6);
1594 bfd_h_put_32 (stdoutput
, size
, (bfd_byte
*) p
+ 8);
1598 obj_coff_init_stab_section (seg
)
1604 unsigned int stroff
;
1606 /* Make space for this first symbol. */
1610 as_where (&file
, (unsigned int *) NULL
);
1611 stabstr_name
= (char *) alloca (strlen (seg
->name
) + 4);
1612 strcpy (stabstr_name
, seg
->name
);
1613 strcat (stabstr_name
, "str");
1614 stroff
= get_stab_string_offset (file
, stabstr_name
);
1616 md_number_to_chars (p
, stroff
, 4);
1625 return ((s
== NULL
) ? "(NULL)" : S_GET_NAME (s
));
1633 for (symbolP
= symbol_rootP
; symbolP
; symbolP
= symbol_next (symbolP
))
1635 printf (_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"),
1636 (unsigned long) symbolP
,
1637 S_GET_NAME(symbolP
),
1638 (long) S_GET_DATA_TYPE(symbolP
),
1639 S_GET_STORAGE_CLASS(symbolP
),
1640 (int) S_GET_SEGMENT(symbolP
));
1646 #else /* not BFD_ASSEMBLER */
1649 /* This is needed because we include internal bfd things. */
1653 #include "libcoff.h"
1656 #include "coff/pe.h"
1659 /* The NOP_OPCODE is for the alignment fill value. Fill with nop so
1660 that we can stick sections together without causing trouble. */
1662 #define NOP_OPCODE 0x00
1665 /* The zeroes if symbol name is longer than 8 chars */
1666 #define S_SET_ZEROES(s,v) ((s)->sy_symbol.ost_entry.n_zeroes = (v))
1668 #define MIN(a,b) ((a) < (b)? (a) : (b))
1670 /* This vector is used to turn a gas internal segment number into a
1671 section number suitable for insertion into a coff symbol table.
1672 This must correspond to seg_info_off_by_4. */
1674 const short seg_N_TYPE
[] =
1675 { /* in: segT out: N_TYPE bits */
1677 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
1678 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
1679 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
1680 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
1681 C_UNDEF_SECTION
, /* SEG_UNKNOWN */
1682 C_UNDEF_SECTION
, /* SEG_GOOF */
1683 C_UNDEF_SECTION
, /* SEG_EXPR */
1684 C_DEBUG_SECTION
, /* SEG_DEBUG */
1685 C_NTV_SECTION
, /* SEG_NTV */
1686 C_PTV_SECTION
, /* SEG_PTV */
1687 C_REGISTER_SECTION
, /* SEG_REGISTER */
1690 int function_lineoff
= -1; /* Offset in line#s where the last function
1691 started (the odd entry for line #0) */
1693 /* structure used to keep the filenames which
1694 are too long around so that we can stick them
1695 into the string table */
1696 struct filename_list
1699 struct filename_list
*next
;
1702 static struct filename_list
*filename_list_head
;
1703 static struct filename_list
*filename_list_tail
;
1705 static symbolS
*last_line_symbol
;
1707 /* Add 4 to the real value to get the index and compensate the
1708 negatives. This vector is used by S_GET_SEGMENT to turn a coff
1709 section number into a segment number
1711 static symbolS
*previous_file_symbol
;
1712 void c_symbol_merge ();
1713 static int line_base
;
1715 symbolS
*c_section_symbol ();
1718 static void fixup_segment
PARAMS ((segment_info_type
*segP
,
1719 segT this_segment_type
));
1721 static void fixup_mdeps
PARAMS ((fragS
*,
1725 static void fill_section
PARAMS ((bfd
* abfd
,
1729 static int c_line_new
PARAMS ((symbolS
* symbol
, long paddr
,
1733 static void w_symbols
PARAMS ((bfd
* abfd
, char *where
,
1734 symbolS
* symbol_rootP
));
1736 static void adjust_stab_section
PARAMS ((bfd
*abfd
, segT seg
));
1738 static void obj_coff_lcomm
PARAMS ((int));
1739 static void obj_coff_text
PARAMS ((int));
1740 static void obj_coff_data
PARAMS ((int));
1741 void obj_coff_section
PARAMS ((int));
1743 /* When not using BFD_ASSEMBLER, we permit up to 40 sections.
1745 This array maps a COFF section number into a gas section number.
1746 Because COFF uses negative section numbers, you must add 4 to the
1747 COFF section number when indexing into this array; this is done via
1748 the SEG_INFO_FROM_SECTION_NUMBER macro. This must correspond to
1751 static const segT seg_info_off_by_4
[] =
1758 SEG_E0
, SEG_E1
, SEG_E2
, SEG_E3
, SEG_E4
,
1759 SEG_E5
, SEG_E6
, SEG_E7
, SEG_E8
, SEG_E9
,
1760 SEG_E10
, SEG_E11
, SEG_E12
, SEG_E13
, SEG_E14
,
1761 SEG_E15
, SEG_E16
, SEG_E17
, SEG_E18
, SEG_E19
,
1762 SEG_E20
, SEG_E21
, SEG_E22
, SEG_E23
, SEG_E24
,
1763 SEG_E25
, SEG_E26
, SEG_E27
, SEG_E28
, SEG_E29
,
1764 SEG_E30
, SEG_E31
, SEG_E32
, SEG_E33
, SEG_E34
,
1765 SEG_E35
, SEG_E36
, SEG_E37
, SEG_E38
, SEG_E39
,
1778 #define SEG_INFO_FROM_SECTION_NUMBER(x) (seg_info_off_by_4[(x)+4])
1780 static relax_addressT
1781 relax_align (address
, alignment
)
1782 relax_addressT address
;
1785 relax_addressT mask
;
1786 relax_addressT new_address
;
1788 mask
= ~((~0) << alignment
);
1789 new_address
= (address
+ mask
) & (~mask
);
1790 return (new_address
- address
);
1797 return SEG_INFO_FROM_SECTION_NUMBER (x
->sy_symbol
.ost_entry
.n_scnum
);
1800 /* calculate the size of the frag chain and fill in the section header
1801 to contain all of it, also fill in the addr of the sections */
1803 size_section (abfd
, idx
)
1804 bfd
*abfd ATTRIBUTE_UNUSED
;
1808 unsigned int size
= 0;
1809 fragS
*frag
= segment_info
[idx
].frchainP
->frch_root
;
1812 size
= frag
->fr_address
;
1813 if (frag
->fr_address
!= size
)
1815 fprintf (stderr
, _("Out of step\n"));
1816 size
= frag
->fr_address
;
1819 switch (frag
->fr_type
)
1821 #ifdef TC_COFF_SIZEMACHDEP
1822 case rs_machine_dependent
:
1823 size
+= TC_COFF_SIZEMACHDEP (frag
);
1827 assert (frag
->fr_symbol
== 0);
1830 size
+= frag
->fr_fix
;
1831 size
+= frag
->fr_offset
* frag
->fr_var
;
1839 size
+= frag
->fr_fix
;
1840 off
= relax_align (size
, frag
->fr_offset
);
1841 if (frag
->fr_subtype
!= 0 && off
> frag
->fr_subtype
)
1847 BAD_CASE (frag
->fr_type
);
1850 frag
= frag
->fr_next
;
1852 segment_info
[idx
].scnhdr
.s_size
= size
;
1857 count_entries_in_chain (idx
)
1860 unsigned int nrelocs
;
1863 /* Count the relocations */
1864 fixup_ptr
= segment_info
[idx
].fix_root
;
1866 while (fixup_ptr
!= (fixS
*) NULL
)
1868 if (fixup_ptr
->fx_done
== 0 && TC_COUNT_RELOC (fixup_ptr
))
1871 if (fixup_ptr
->fx_r_type
== RELOC_CONSTH
)
1880 fixup_ptr
= fixup_ptr
->fx_next
;
1887 static int compare_external_relocs
PARAMS ((const PTR
, const PTR
));
1889 /* AUX's ld expects relocations to be sorted */
1891 compare_external_relocs (x
, y
)
1895 struct external_reloc
*a
= (struct external_reloc
*) x
;
1896 struct external_reloc
*b
= (struct external_reloc
*) y
;
1897 bfd_vma aadr
= bfd_getb32 (a
->r_vaddr
);
1898 bfd_vma badr
= bfd_getb32 (b
->r_vaddr
);
1899 return (aadr
< badr
? -1 : badr
< aadr
? 1 : 0);
1904 /* output all the relocations for a section */
1906 do_relocs_for (abfd
, h
, file_cursor
)
1909 unsigned long *file_cursor
;
1911 unsigned int nrelocs
;
1913 unsigned long reloc_start
= *file_cursor
;
1915 for (idx
= SEG_E0
; idx
< SEG_LAST
; idx
++)
1917 if (segment_info
[idx
].scnhdr
.s_name
[0])
1919 struct external_reloc
*ext_ptr
;
1920 struct external_reloc
*external_reloc_vec
;
1921 unsigned int external_reloc_size
;
1922 unsigned int base
= segment_info
[idx
].scnhdr
.s_paddr
;
1923 fixS
*fix_ptr
= segment_info
[idx
].fix_root
;
1924 nrelocs
= count_entries_in_chain (idx
);
1927 /* Bypass this stuff if no relocs. This also incidentally
1928 avoids a SCO bug, where free(malloc(0)) tends to crash. */
1930 external_reloc_size
= nrelocs
* RELSZ
;
1931 external_reloc_vec
=
1932 (struct external_reloc
*) malloc (external_reloc_size
);
1934 ext_ptr
= external_reloc_vec
;
1936 /* Fill in the internal coff style reloc struct from the
1937 internal fix list. */
1940 struct internal_reloc intr
;
1942 /* Only output some of the relocations */
1943 if (fix_ptr
->fx_done
== 0 && TC_COUNT_RELOC (fix_ptr
))
1945 #ifdef TC_RELOC_MANGLE
1946 TC_RELOC_MANGLE (&segment_info
[idx
], fix_ptr
, &intr
,
1951 symbolS
*symbol_ptr
= fix_ptr
->fx_addsy
;
1953 intr
.r_type
= TC_COFF_FIX2RTYPE (fix_ptr
);
1955 base
+ fix_ptr
->fx_frag
->fr_address
+ fix_ptr
->fx_where
;
1957 #ifdef TC_KEEP_FX_OFFSET
1958 intr
.r_offset
= fix_ptr
->fx_offset
;
1963 while (symbol_ptr
->sy_value
.X_op
== O_symbol
1964 && (! S_IS_DEFINED (symbol_ptr
)
1965 || S_IS_COMMON (symbol_ptr
)))
1969 /* We must avoid looping, as that can occur
1970 with a badly written program. */
1971 n
= symbol_ptr
->sy_value
.X_add_symbol
;
1972 if (n
== symbol_ptr
)
1977 /* Turn the segment of the symbol into an offset. */
1980 resolve_symbol_value (symbol_ptr
);
1981 if (! symbol_ptr
->sy_resolved
)
1986 if (expr_symbol_where (symbol_ptr
, &file
, &line
))
1987 as_bad_where (file
, line
,
1988 _("unresolved relocation"));
1990 as_bad (_("bad relocation: symbol `%s' not in symbol table"),
1991 S_GET_NAME (symbol_ptr
));
1993 dot
= segment_info
[S_GET_SEGMENT (symbol_ptr
)].dot
;
1996 intr
.r_symndx
= dot
->sy_number
;
2000 intr
.r_symndx
= symbol_ptr
->sy_number
;
2010 (void) bfd_coff_swap_reloc_out (abfd
, &intr
, ext_ptr
);
2013 #if defined(TC_A29K)
2015 /* The 29k has a special kludge for the high 16 bit
2016 reloc. Two relocations are emited, R_IHIHALF,
2017 and R_IHCONST. The second one doesn't contain a
2018 symbol, but uses the value for offset. */
2020 if (intr
.r_type
== R_IHIHALF
)
2022 /* now emit the second bit */
2023 intr
.r_type
= R_IHCONST
;
2024 intr
.r_symndx
= fix_ptr
->fx_addnumber
;
2025 (void) bfd_coff_swap_reloc_out (abfd
, &intr
, ext_ptr
);
2031 fix_ptr
= fix_ptr
->fx_next
;
2035 /* Sort the reloc table */
2036 qsort ((PTR
) external_reloc_vec
, nrelocs
,
2037 sizeof (struct external_reloc
), compare_external_relocs
);
2040 /* Write out the reloc table */
2041 bfd_write ((PTR
) external_reloc_vec
, 1, external_reloc_size
,
2043 free (external_reloc_vec
);
2045 /* Fill in section header info. */
2046 segment_info
[idx
].scnhdr
.s_relptr
= *file_cursor
;
2047 *file_cursor
+= external_reloc_size
;
2048 segment_info
[idx
].scnhdr
.s_nreloc
= nrelocs
;
2053 segment_info
[idx
].scnhdr
.s_relptr
= 0;
2057 /* Set relocation_size field in file headers */
2058 H_SET_RELOCATION_SIZE (h
, *file_cursor
- reloc_start
, 0);
2061 /* run through a frag chain and write out the data to go with it, fill
2062 in the scnhdrs with the info on the file postions
2065 fill_section (abfd
, h
, file_cursor
)
2067 object_headers
*h ATTRIBUTE_UNUSED
;
2068 unsigned long *file_cursor
;
2072 unsigned int paddr
= 0;
2074 for (i
= SEG_E0
; i
< SEG_UNKNOWN
; i
++)
2076 unsigned int offset
= 0;
2077 struct internal_scnhdr
*s
= &(segment_info
[i
].scnhdr
);
2083 fragS
*frag
= segment_info
[i
].frchainP
->frch_root
;
2084 char *buffer
= NULL
;
2090 buffer
= xmalloc (s
->s_size
);
2091 s
->s_scnptr
= *file_cursor
;
2093 know (s
->s_paddr
== paddr
);
2095 if (strcmp (s
->s_name
, ".text") == 0)
2096 s
->s_flags
|= STYP_TEXT
;
2097 else if (strcmp (s
->s_name
, ".data") == 0)
2098 s
->s_flags
|= STYP_DATA
;
2099 else if (strcmp (s
->s_name
, ".bss") == 0)
2102 s
->s_flags
|= STYP_BSS
;
2104 /* @@ Should make the i386 and a29k coff targets define
2105 COFF_NOLOAD_PROBLEM, and have only one test here. */
2108 #ifndef COFF_NOLOAD_PROBLEM
2109 /* Apparently the SVR3 linker (and exec syscall) and UDI
2110 mondfe progrem are confused by noload sections. */
2111 s
->s_flags
|= STYP_NOLOAD
;
2116 else if (strcmp (s
->s_name
, ".lit") == 0)
2117 s
->s_flags
= STYP_LIT
| STYP_TEXT
;
2118 else if (strcmp (s
->s_name
, ".init") == 0)
2119 s
->s_flags
|= STYP_TEXT
;
2120 else if (strcmp (s
->s_name
, ".fini") == 0)
2121 s
->s_flags
|= STYP_TEXT
;
2122 else if (strncmp (s
->s_name
, ".comment", 8) == 0)
2123 s
->s_flags
|= STYP_INFO
;
2127 unsigned int fill_size
;
2128 switch (frag
->fr_type
)
2130 case rs_machine_dependent
:
2133 memcpy (buffer
+ frag
->fr_address
,
2135 (unsigned int) frag
->fr_fix
);
2136 offset
+= frag
->fr_fix
;
2141 assert (frag
->fr_symbol
== 0);
2149 memcpy (buffer
+ frag
->fr_address
,
2151 (unsigned int) frag
->fr_fix
);
2152 offset
+= frag
->fr_fix
;
2155 fill_size
= frag
->fr_var
;
2156 if (fill_size
&& frag
->fr_offset
> 0)
2159 unsigned int off
= frag
->fr_fix
;
2160 for (count
= frag
->fr_offset
; count
; count
--)
2162 if (fill_size
+ frag
->fr_address
+ off
<= s
->s_size
)
2164 memcpy (buffer
+ frag
->fr_address
+ off
,
2165 frag
->fr_literal
+ frag
->fr_fix
,
2168 offset
+= fill_size
;
2173 case rs_broken_word
:
2178 frag
= frag
->fr_next
;
2183 if (s
->s_scnptr
!= 0)
2185 bfd_write (buffer
, s
->s_size
, 1, abfd
);
2186 *file_cursor
+= s
->s_size
;
2195 /* Coff file generation & utilities */
2198 coff_header_append (abfd
, h
)
2205 #ifdef COFF_LONG_SECTION_NAMES
2206 unsigned long string_size
= 4;
2209 bfd_seek (abfd
, 0, 0);
2211 #ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER
2212 H_SET_MAGIC_NUMBER (h
, COFF_MAGIC
);
2213 H_SET_VERSION_STAMP (h
, 0);
2214 H_SET_ENTRY_POINT (h
, 0);
2215 H_SET_TEXT_START (h
, segment_info
[SEG_E0
].frchainP
->frch_root
->fr_address
);
2216 H_SET_DATA_START (h
, segment_info
[SEG_E1
].frchainP
->frch_root
->fr_address
);
2217 H_SET_SIZEOF_OPTIONAL_HEADER (h
, bfd_coff_swap_aouthdr_out(abfd
, &h
->aouthdr
,
2219 #else /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
2220 H_SET_SIZEOF_OPTIONAL_HEADER (h
, 0);
2221 #endif /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
2223 i
= bfd_coff_swap_filehdr_out (abfd
, &h
->filehdr
, buffer
);
2225 bfd_write (buffer
, i
, 1, abfd
);
2226 bfd_write (buffero
, H_GET_SIZEOF_OPTIONAL_HEADER (h
), 1, abfd
);
2228 for (i
= SEG_E0
; i
< SEG_LAST
; i
++)
2230 if (segment_info
[i
].scnhdr
.s_name
[0])
2234 #ifdef COFF_LONG_SECTION_NAMES
2235 /* Support long section names as found in PE. This code
2236 must coordinate with that in write_object_file and
2238 if (strlen (segment_info
[i
].name
) > SCNNMLEN
)
2240 memset (segment_info
[i
].scnhdr
.s_name
, 0, SCNNMLEN
);
2241 sprintf (segment_info
[i
].scnhdr
.s_name
, "/%lu", string_size
);
2242 string_size
+= strlen (segment_info
[i
].name
) + 1;
2246 size
= bfd_coff_swap_scnhdr_out (abfd
,
2247 &(segment_info
[i
].scnhdr
),
2250 as_bad (_("bfd_coff_swap_scnhdr_out failed"));
2251 bfd_write (buffer
, size
, 1, abfd
);
2257 symbol_to_chars (abfd
, where
, symbolP
)
2262 unsigned int numaux
= symbolP
->sy_symbol
.ost_entry
.n_numaux
;
2266 /* Turn any symbols with register attributes into abs symbols */
2267 if (S_GET_SEGMENT (symbolP
) == reg_section
)
2269 S_SET_SEGMENT (symbolP
, absolute_section
);
2271 /* At the same time, relocate all symbols to their output value */
2274 val
= (segment_info
[S_GET_SEGMENT (symbolP
)].scnhdr
.s_paddr
2275 + S_GET_VALUE (symbolP
));
2277 val
= S_GET_VALUE (symbolP
);
2280 S_SET_VALUE (symbolP
, val
);
2282 symbolP
->sy_symbol
.ost_entry
.n_value
= val
;
2284 where
+= bfd_coff_swap_sym_out (abfd
, &symbolP
->sy_symbol
.ost_entry
,
2287 for (i
= 0; i
< numaux
; i
++)
2289 where
+= bfd_coff_swap_aux_out (abfd
,
2290 &symbolP
->sy_symbol
.ost_auxent
[i
],
2291 S_GET_DATA_TYPE (symbolP
),
2292 S_GET_STORAGE_CLASS (symbolP
),
2300 coff_obj_symbol_new_hook (symbolP
)
2303 char underscore
= 0; /* Symbol has leading _ */
2305 /* Effective symbol */
2306 /* Store the pointer in the offset. */
2307 S_SET_ZEROES (symbolP
, 0L);
2308 S_SET_DATA_TYPE (symbolP
, T_NULL
);
2309 S_SET_STORAGE_CLASS (symbolP
, 0);
2310 S_SET_NUMBER_AUXILIARY (symbolP
, 0);
2311 /* Additional information */
2312 symbolP
->sy_symbol
.ost_flags
= 0;
2313 /* Auxiliary entries */
2314 memset ((char *) &symbolP
->sy_symbol
.ost_auxent
[0], 0, AUXESZ
);
2316 if (S_IS_STRING (symbolP
))
2317 SF_SET_STRING (symbolP
);
2318 if (!underscore
&& S_IS_LOCAL (symbolP
))
2319 SF_SET_LOCAL (symbolP
);
2323 * Handle .ln directives.
2327 obj_coff_ln (appline
)
2332 if (! appline
&& def_symbol_in_progress
!= NULL
)
2334 as_warn (_(".ln pseudo-op inside .def/.endef: ignored."));
2335 demand_empty_rest_of_line ();
2337 } /* wrong context */
2339 l
= get_absolute_expression ();
2340 c_line_new (0, frag_now_fix (), l
, frag_now
);
2343 new_logical_line ((char *) NULL
, l
- 1);
2353 listing_source_line ((unsigned int) l
);
2358 demand_empty_rest_of_line ();
2364 * Handle .def directives.
2366 * One might ask : why can't we symbol_new if the symbol does not
2367 * already exist and fill it with debug information. Because of
2368 * the C_EFCN special symbol. It would clobber the value of the
2369 * function symbol before we have a chance to notice that it is
2370 * a C_EFCN. And a second reason is that the code is more clear this
2371 * way. (at least I think it is :-).
2375 #define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';')
2376 #define SKIP_WHITESPACES() while (*input_line_pointer == ' ' || \
2377 *input_line_pointer == '\t') \
2378 input_line_pointer++;
2382 int what ATTRIBUTE_UNUSED
;
2384 char name_end
; /* Char after the end of name */
2385 char *symbol_name
; /* Name of the debug symbol */
2386 char *symbol_name_copy
; /* Temporary copy of the name */
2387 unsigned int symbol_name_length
;
2389 if (def_symbol_in_progress
!= NULL
)
2391 as_warn (_(".def pseudo-op used inside of .def/.endef: ignored."));
2392 demand_empty_rest_of_line ();
2394 } /* if not inside .def/.endef */
2396 SKIP_WHITESPACES ();
2398 def_symbol_in_progress
= (symbolS
*) obstack_alloc (¬es
, sizeof (*def_symbol_in_progress
));
2399 memset (def_symbol_in_progress
, 0, sizeof (*def_symbol_in_progress
));
2401 symbol_name
= input_line_pointer
;
2402 name_end
= get_symbol_end ();
2403 symbol_name_length
= strlen (symbol_name
);
2404 symbol_name_copy
= xmalloc (symbol_name_length
+ 1);
2405 strcpy (symbol_name_copy
, symbol_name
);
2406 #ifdef tc_canonicalize_symbol_name
2407 symbol_name_copy
= tc_canonicalize_symbol_name (symbol_name_copy
);
2410 /* Initialize the new symbol */
2411 #ifdef STRIP_UNDERSCORE
2412 S_SET_NAME (def_symbol_in_progress
, (*symbol_name_copy
== '_'
2413 ? symbol_name_copy
+ 1
2414 : symbol_name_copy
));
2415 #else /* STRIP_UNDERSCORE */
2416 S_SET_NAME (def_symbol_in_progress
, symbol_name_copy
);
2417 #endif /* STRIP_UNDERSCORE */
2418 /* free(symbol_name_copy); */
2419 def_symbol_in_progress
->sy_name_offset
= (unsigned long) ~0;
2420 def_symbol_in_progress
->sy_number
= ~0;
2421 def_symbol_in_progress
->sy_frag
= &zero_address_frag
;
2422 S_SET_VALUE (def_symbol_in_progress
, 0);
2424 if (S_IS_STRING (def_symbol_in_progress
))
2425 SF_SET_STRING (def_symbol_in_progress
);
2427 *input_line_pointer
= name_end
;
2429 demand_empty_rest_of_line ();
2432 unsigned int dim_index
;
2435 obj_coff_endef (ignore
)
2436 int ignore ATTRIBUTE_UNUSED
;
2438 symbolS
*symbolP
= 0;
2439 /* DIM BUG FIX sac@cygnus.com */
2441 if (def_symbol_in_progress
== NULL
)
2443 as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored."));
2444 demand_empty_rest_of_line ();
2446 } /* if not inside .def/.endef */
2448 /* Set the section number according to storage class. */
2449 switch (S_GET_STORAGE_CLASS (def_symbol_in_progress
))
2454 SF_SET_TAG (def_symbol_in_progress
);
2455 /* intentional fallthrough */
2458 SF_SET_DEBUG (def_symbol_in_progress
);
2459 S_SET_SEGMENT (def_symbol_in_progress
, SEG_DEBUG
);
2463 SF_SET_LOCAL (def_symbol_in_progress
); /* Do not emit this symbol. */
2464 /* intentional fallthrough */
2466 SF_SET_PROCESS (def_symbol_in_progress
); /* Will need processing before writing */
2467 /* intentional fallthrough */
2469 S_SET_SEGMENT (def_symbol_in_progress
, SEG_E0
);
2471 if (strcmp (S_GET_NAME (def_symbol_in_progress
), ".bf") == 0)
2473 if (function_lineoff
< 0)
2475 fprintf (stderr
, _("`.bf' symbol without preceding function\n"));
2476 } /* missing function symbol */
2477 SA_GET_SYM_LNNOPTR (last_line_symbol
) = function_lineoff
;
2479 SF_SET_PROCESS (last_line_symbol
);
2480 SF_SET_ADJ_LNNOPTR (last_line_symbol
);
2481 SF_SET_PROCESS (def_symbol_in_progress
);
2482 function_lineoff
= -1;
2484 /* Value is always set to . */
2485 def_symbol_in_progress
->sy_frag
= frag_now
;
2486 S_SET_VALUE (def_symbol_in_progress
, (valueT
) frag_now_fix ());
2491 #endif /* C_AUTOARG */
2501 SF_SET_DEBUG (def_symbol_in_progress
);
2502 S_SET_SEGMENT (def_symbol_in_progress
, absolute_section
);
2512 /* Valid but set somewhere else (s_comm, s_lcomm, colon) */
2518 as_warn (_("unexpected storage class %d"), S_GET_STORAGE_CLASS (def_symbol_in_progress
));
2520 } /* switch on storage class */
2522 /* Now that we have built a debug symbol, try to find if we should
2523 merge with an existing symbol or not. If a symbol is C_EFCN or
2524 absolute_section or untagged SEG_DEBUG it never merges. We also
2525 don't merge labels, which are in a different namespace, nor
2526 symbols which have not yet been defined since they are typically
2527 unique, nor do we merge tags with non-tags. */
2529 /* Two cases for functions. Either debug followed by definition or
2530 definition followed by debug. For definition first, we will
2531 merge the debug symbol into the definition. For debug first, the
2532 lineno entry MUST point to the definition function or else it
2533 will point off into space when crawl_symbols() merges the debug
2534 symbol into the real symbol. Therefor, let's presume the debug
2535 symbol is a real function reference. */
2537 /* FIXME-SOON If for some reason the definition label/symbol is
2538 never seen, this will probably leave an undefined symbol at link
2541 if (S_GET_STORAGE_CLASS (def_symbol_in_progress
) == C_EFCN
2542 || S_GET_STORAGE_CLASS (def_symbol_in_progress
) == C_LABEL
2543 || (S_GET_SEGMENT (def_symbol_in_progress
) == SEG_DEBUG
2544 && !SF_GET_TAG (def_symbol_in_progress
))
2545 || S_GET_SEGMENT (def_symbol_in_progress
) == absolute_section
2546 || def_symbol_in_progress
->sy_value
.X_op
!= O_constant
2547 || (symbolP
= symbol_find_base (S_GET_NAME (def_symbol_in_progress
), DO_NOT_STRIP
)) == NULL
2548 || (SF_GET_TAG (def_symbol_in_progress
) != SF_GET_TAG (symbolP
)))
2550 symbol_append (def_symbol_in_progress
, symbol_lastP
, &symbol_rootP
,
2555 /* This symbol already exists, merge the newly created symbol
2556 into the old one. This is not mandatory. The linker can
2557 handle duplicate symbols correctly. But I guess that it save
2558 a *lot* of space if the assembly file defines a lot of
2561 /* The debug entry (def_symbol_in_progress) is merged into the
2562 previous definition. */
2564 c_symbol_merge (def_symbol_in_progress
, symbolP
);
2565 /* FIXME-SOON Should *def_symbol_in_progress be free'd? xoxorich. */
2566 def_symbol_in_progress
= symbolP
;
2568 if (SF_GET_FUNCTION (def_symbol_in_progress
)
2569 || SF_GET_TAG (def_symbol_in_progress
)
2570 || S_GET_STORAGE_CLASS (def_symbol_in_progress
) == C_STAT
)
2572 /* For functions, and tags, and static symbols, the symbol
2573 *must* be where the debug symbol appears. Move the
2574 existing symbol to the current place. */
2575 /* If it already is at the end of the symbol list, do nothing */
2576 if (def_symbol_in_progress
!= symbol_lastP
)
2578 symbol_remove (def_symbol_in_progress
, &symbol_rootP
,
2580 symbol_append (def_symbol_in_progress
, symbol_lastP
,
2581 &symbol_rootP
, &symbol_lastP
);
2582 } /* if not already in place */
2584 } /* normal or mergable */
2586 if (SF_GET_TAG (def_symbol_in_progress
))
2590 oldtag
= symbol_find_base (S_GET_NAME (def_symbol_in_progress
),
2592 if (oldtag
== NULL
|| ! SF_GET_TAG (oldtag
))
2593 tag_insert (S_GET_NAME (def_symbol_in_progress
),
2594 def_symbol_in_progress
);
2597 if (SF_GET_FUNCTION (def_symbol_in_progress
))
2599 know (sizeof (def_symbol_in_progress
) <= sizeof (long));
2601 = c_line_new (def_symbol_in_progress
, 0, 0, &zero_address_frag
);
2603 SF_SET_PROCESS (def_symbol_in_progress
);
2605 if (symbolP
== NULL
)
2607 /* That is, if this is the first time we've seen the
2609 symbol_table_insert (def_symbol_in_progress
);
2610 } /* definition follows debug */
2611 } /* Create the line number entry pointing to the function being defined */
2613 def_symbol_in_progress
= NULL
;
2614 demand_empty_rest_of_line ();
2618 obj_coff_dim (ignore
)
2619 int ignore ATTRIBUTE_UNUSED
;
2623 if (def_symbol_in_progress
== NULL
)
2625 as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored."));
2626 demand_empty_rest_of_line ();
2628 } /* if not inside .def/.endef */
2630 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress
, 1);
2632 for (dim_index
= 0; dim_index
< DIMNUM
; dim_index
++)
2634 SKIP_WHITESPACES ();
2635 SA_SET_SYM_DIMEN (def_symbol_in_progress
, dim_index
,
2636 get_absolute_expression ());
2638 switch (*input_line_pointer
)
2641 input_line_pointer
++;
2645 as_warn (_("badly formed .dim directive ignored"));
2646 /* intentional fallthrough */
2654 demand_empty_rest_of_line ();
2658 obj_coff_line (ignore
)
2659 int ignore ATTRIBUTE_UNUSED
;
2664 if (def_symbol_in_progress
== NULL
)
2670 name
= S_GET_NAME (def_symbol_in_progress
);
2671 this_base
= get_absolute_expression ();
2673 /* Only .bf symbols indicate the use of a new base line number; the
2674 line numbers associated with .ef, .bb, .eb are relative to the
2675 start of the containing function. */
2676 if (!strcmp (".bf", name
))
2678 #if 0 /* XXX Can we ever have line numbers going backwards? */
2679 if (this_base
> line_base
)
2682 line_base
= this_base
;
2690 listing_source_line ((unsigned int) line_base
);
2696 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress
, 1);
2697 SA_SET_SYM_LNNO (def_symbol_in_progress
, this_base
);
2699 demand_empty_rest_of_line ();
2703 obj_coff_size (ignore
)
2704 int ignore ATTRIBUTE_UNUSED
;
2706 if (def_symbol_in_progress
== NULL
)
2708 as_warn (_(".size pseudo-op used outside of .def/.endef ignored."));
2709 demand_empty_rest_of_line ();
2711 } /* if not inside .def/.endef */
2713 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress
, 1);
2714 SA_SET_SYM_SIZE (def_symbol_in_progress
, get_absolute_expression ());
2715 demand_empty_rest_of_line ();
2719 obj_coff_scl (ignore
)
2720 int ignore ATTRIBUTE_UNUSED
;
2722 if (def_symbol_in_progress
== NULL
)
2724 as_warn (_(".scl pseudo-op used outside of .def/.endef ignored."));
2725 demand_empty_rest_of_line ();
2727 } /* if not inside .def/.endef */
2729 S_SET_STORAGE_CLASS (def_symbol_in_progress
, get_absolute_expression ());
2730 demand_empty_rest_of_line ();
2734 obj_coff_tag (ignore
)
2735 int ignore ATTRIBUTE_UNUSED
;
2740 if (def_symbol_in_progress
== NULL
)
2742 as_warn (_(".tag pseudo-op used outside of .def/.endef ignored."));
2743 demand_empty_rest_of_line ();
2747 S_SET_NUMBER_AUXILIARY (def_symbol_in_progress
, 1);
2748 symbol_name
= input_line_pointer
;
2749 name_end
= get_symbol_end ();
2750 #ifdef tc_canonicalize_symbol_name
2751 symbol_name
= tc_canonicalize_symbol_name (symbol_name
);
2754 /* Assume that the symbol referred to by .tag is always defined.
2755 This was a bad assumption. I've added find_or_make. xoxorich. */
2756 SA_SET_SYM_TAGNDX (def_symbol_in_progress
,
2757 (long) tag_find_or_make (symbol_name
));
2758 if (SA_GET_SYM_TAGNDX (def_symbol_in_progress
) == 0L)
2760 as_warn (_("tag not found for .tag %s"), symbol_name
);
2763 SF_SET_TAGGED (def_symbol_in_progress
);
2764 *input_line_pointer
= name_end
;
2766 demand_empty_rest_of_line ();
2770 obj_coff_type (ignore
)
2771 int ignore ATTRIBUTE_UNUSED
;
2773 if (def_symbol_in_progress
== NULL
)
2775 as_warn (_(".type pseudo-op used outside of .def/.endef ignored."));
2776 demand_empty_rest_of_line ();
2778 } /* if not inside .def/.endef */
2780 S_SET_DATA_TYPE (def_symbol_in_progress
, get_absolute_expression ());
2782 if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress
)) &&
2783 S_GET_STORAGE_CLASS (def_symbol_in_progress
) != C_TPDEF
)
2785 SF_SET_FUNCTION (def_symbol_in_progress
);
2786 } /* is a function */
2788 demand_empty_rest_of_line ();
2792 obj_coff_val (ignore
)
2793 int ignore ATTRIBUTE_UNUSED
;
2795 if (def_symbol_in_progress
== NULL
)
2797 as_warn (_(".val pseudo-op used outside of .def/.endef ignored."));
2798 demand_empty_rest_of_line ();
2800 } /* if not inside .def/.endef */
2802 if (is_name_beginner (*input_line_pointer
))
2804 char *symbol_name
= input_line_pointer
;
2805 char name_end
= get_symbol_end ();
2807 #ifdef tc_canonicalize_symbol_name
2808 symbol_name
= tc_canonicalize_symbol_name (symbol_name
);
2811 if (!strcmp (symbol_name
, "."))
2813 def_symbol_in_progress
->sy_frag
= frag_now
;
2814 S_SET_VALUE (def_symbol_in_progress
, (valueT
) frag_now_fix ());
2815 /* If the .val is != from the .def (e.g. statics) */
2817 else if (strcmp (S_GET_NAME (def_symbol_in_progress
), symbol_name
))
2819 def_symbol_in_progress
->sy_value
.X_op
= O_symbol
;
2820 def_symbol_in_progress
->sy_value
.X_add_symbol
=
2821 symbol_find_or_make (symbol_name
);
2822 def_symbol_in_progress
->sy_value
.X_op_symbol
= NULL
;
2823 def_symbol_in_progress
->sy_value
.X_add_number
= 0;
2825 /* If the segment is undefined when the forward reference is
2826 resolved, then copy the segment id from the forward
2828 SF_SET_GET_SEGMENT (def_symbol_in_progress
);
2830 /* FIXME: gcc can generate address expressions here in
2831 unusual cases (search for "obscure" in sdbout.c). We
2832 just ignore the offset here, thus generating incorrect
2833 debugging information. We ignore the rest of the line
2836 /* Otherwise, it is the name of a non debug symbol and
2837 its value will be calculated later. */
2838 *input_line_pointer
= name_end
;
2840 /* FIXME: this is to avoid an error message in the
2841 FIXME case mentioned just above. */
2842 while (! is_end_of_line
[(unsigned char) *input_line_pointer
])
2843 ++input_line_pointer
;
2847 S_SET_VALUE (def_symbol_in_progress
,
2848 (valueT
) get_absolute_expression ());
2849 } /* if symbol based */
2851 demand_empty_rest_of_line ();
2856 /* Handle the .linkonce pseudo-op. This is parsed by s_linkonce in
2857 read.c, which then calls this object file format specific routine. */
2860 obj_coff_pe_handle_link_once (type
)
2861 enum linkonce_type type
;
2863 seg_info (now_seg
)->scnhdr
.s_flags
|= IMAGE_SCN_LNK_COMDAT
;
2865 /* We store the type in the seg_info structure, and use it to set up
2866 the auxiliary entry for the section symbol in c_section_symbol. */
2867 seg_info (now_seg
)->linkonce
= type
;
2873 coff_obj_read_begin_hook ()
2875 /* These had better be the same. Usually 18 bytes. */
2877 know (sizeof (SYMENT
) == sizeof (AUXENT
));
2878 know (SYMESZ
== AUXESZ
);
2883 /* This function runs through the symbol table and puts all the
2884 externals onto another chain */
2886 /* The chain of globals. */
2887 symbolS
*symbol_globalP
;
2888 symbolS
*symbol_global_lastP
;
2890 /* The chain of externals */
2891 symbolS
*symbol_externP
;
2892 symbolS
*symbol_extern_lastP
;
2895 symbolS
*last_functionP
;
2896 static symbolS
*last_bfP
;
2903 unsigned int symbol_number
= 0;
2904 unsigned int last_file_symno
= 0;
2906 struct filename_list
*filename_list_scan
= filename_list_head
;
2908 for (symbolP
= symbol_rootP
;
2910 symbolP
= symbolP
? symbol_next (symbolP
) : symbol_rootP
)
2912 if (symbolP
->sy_mri_common
)
2914 if (S_GET_STORAGE_CLASS (symbolP
) == C_EXT
2916 || S_GET_STORAGE_CLASS (symbolP
) == C_NT_WEAK
2918 || S_GET_STORAGE_CLASS (symbolP
) == C_WEAKEXT
)
2919 as_bad (_("%s: global symbols not supported in common sections"),
2920 S_GET_NAME (symbolP
));
2921 symbol_remove (symbolP
, &symbol_rootP
, &symbol_lastP
);
2925 if (!SF_GET_DEBUG (symbolP
))
2927 /* Debug symbols do not need all this rubbish */
2928 symbolS
*real_symbolP
;
2930 /* L* and C_EFCN symbols never merge. */
2931 if (!SF_GET_LOCAL (symbolP
)
2932 && !SF_GET_STATICS (symbolP
)
2933 && S_GET_STORAGE_CLASS (symbolP
) != C_LABEL
2934 && symbolP
->sy_value
.X_op
== O_constant
2935 && (real_symbolP
= symbol_find_base (S_GET_NAME (symbolP
), DO_NOT_STRIP
))
2936 && real_symbolP
!= symbolP
)
2938 /* FIXME-SOON: where do dups come from?
2939 Maybe tag references before definitions? xoxorich. */
2940 /* Move the debug data from the debug symbol to the
2941 real symbol. Do NOT do the oposite (i.e. move from
2942 real symbol to debug symbol and remove real symbol from the
2943 list.) Because some pointers refer to the real symbol
2944 whereas no pointers refer to the debug symbol. */
2945 c_symbol_merge (symbolP
, real_symbolP
);
2946 /* Replace the current symbol by the real one */
2947 /* The symbols will never be the last or the first
2948 because : 1st symbol is .file and 3 last symbols are
2949 .text, .data, .bss */
2950 symbol_remove (real_symbolP
, &symbol_rootP
, &symbol_lastP
);
2951 symbol_insert (real_symbolP
, symbolP
, &symbol_rootP
, &symbol_lastP
);
2952 symbol_remove (symbolP
, &symbol_rootP
, &symbol_lastP
);
2953 symbolP
= real_symbolP
;
2954 } /* if not local but dup'd */
2956 if (flag_readonly_data_in_text
&& (S_GET_SEGMENT (symbolP
) == SEG_E1
))
2958 S_SET_SEGMENT (symbolP
, SEG_E0
);
2959 } /* push data into text */
2961 resolve_symbol_value (symbolP
);
2963 if (S_GET_STORAGE_CLASS (symbolP
) == C_NULL
)
2965 if (!S_IS_DEFINED (symbolP
) && !SF_GET_LOCAL (symbolP
))
2967 S_SET_EXTERNAL (symbolP
);
2969 else if (S_GET_SEGMENT (symbolP
) == SEG_E0
)
2971 S_SET_STORAGE_CLASS (symbolP
, C_LABEL
);
2975 S_SET_STORAGE_CLASS (symbolP
, C_STAT
);
2979 /* Mainly to speed up if not -g */
2980 if (SF_GET_PROCESS (symbolP
))
2982 /* Handle the nested blocks auxiliary info. */
2983 if (S_GET_STORAGE_CLASS (symbolP
) == C_BLOCK
)
2985 if (!strcmp (S_GET_NAME (symbolP
), ".bb"))
2986 stack_push (block_stack
, (char *) &symbolP
);
2989 register symbolS
*begin_symbolP
;
2990 begin_symbolP
= *(symbolS
**) stack_pop (block_stack
);
2991 if (begin_symbolP
== (symbolS
*) 0)
2992 as_warn (_("mismatched .eb"));
2994 SA_SET_SYM_ENDNDX (begin_symbolP
, symbol_number
+ 2);
2997 /* If we are able to identify the type of a function, and we
2998 are out of a function (last_functionP == 0) then, the
2999 function symbol will be associated with an auxiliary
3001 if (last_functionP
== (symbolS
*) 0 &&
3002 SF_GET_FUNCTION (symbolP
))
3004 last_functionP
= symbolP
;
3006 if (S_GET_NUMBER_AUXILIARY (symbolP
) < 1)
3008 S_SET_NUMBER_AUXILIARY (symbolP
, 1);
3009 } /* make it at least 1 */
3011 /* Clobber possible stale .dim information. */
3013 /* Iffed out by steve - this fries the lnnoptr info too */
3014 bzero (symbolP
->sy_symbol
.ost_auxent
[0].x_sym
.x_fcnary
.x_ary
.x_dimen
,
3015 sizeof (symbolP
->sy_symbol
.ost_auxent
[0].x_sym
.x_fcnary
.x_ary
.x_dimen
));
3018 if (S_GET_STORAGE_CLASS (symbolP
) == C_FCN
)
3020 if (strcmp (S_GET_NAME (symbolP
), ".bf") == 0)
3022 if (last_bfP
!= NULL
)
3023 SA_SET_SYM_ENDNDX (last_bfP
, symbol_number
);
3027 else if (S_GET_STORAGE_CLASS (symbolP
) == C_EFCN
)
3029 /* I don't even know if this is needed for sdb. But
3030 the standard assembler generates it, so... */
3031 if (last_functionP
== (symbolS
*) 0)
3032 as_fatal (_("C_EFCN symbol out of scope"));
3033 SA_SET_SYM_FSIZE (last_functionP
,
3034 (long) (S_GET_VALUE (symbolP
) -
3035 S_GET_VALUE (last_functionP
)));
3036 SA_SET_SYM_ENDNDX (last_functionP
, symbol_number
);
3037 last_functionP
= (symbolS
*) 0;
3041 else if (SF_GET_TAG (symbolP
))
3043 /* First descriptor of a structure must point to
3044 the first slot after the structure description. */
3045 last_tagP
= symbolP
;
3048 else if (S_GET_STORAGE_CLASS (symbolP
) == C_EOS
)
3050 /* +2 take in account the current symbol */
3051 SA_SET_SYM_ENDNDX (last_tagP
, symbol_number
+ 2);
3053 else if (S_GET_STORAGE_CLASS (symbolP
) == C_FILE
)
3055 /* If the filename was too long to fit in the
3056 auxent, put it in the string table */
3057 if (SA_GET_FILE_FNAME_ZEROS (symbolP
) == 0
3058 && SA_GET_FILE_FNAME_OFFSET (symbolP
) != 0)
3060 SA_SET_FILE_FNAME_OFFSET (symbolP
, string_byte_count
);
3061 string_byte_count
+= strlen (filename_list_scan
->filename
) + 1;
3062 filename_list_scan
= filename_list_scan
->next
;
3064 if (S_GET_VALUE (symbolP
))
3066 S_SET_VALUE (symbolP
, last_file_symno
);
3067 last_file_symno
= symbol_number
;
3068 } /* no one points at the first .file symbol */
3069 } /* if debug or tag or eos or file */
3071 #ifdef tc_frob_coff_symbol
3072 tc_frob_coff_symbol (symbolP
);
3075 /* We must put the external symbols apart. The loader
3076 does not bomb if we do not. But the references in
3077 the endndx field for a .bb symbol are not corrected
3078 if an external symbol is removed between .bb and .be.
3079 I.e in the following case :
3080 [20] .bb endndx = 22
3083 ld will move the symbol 21 to the end of the list but
3084 endndx will still be 22 instead of 21. */
3086 if (SF_GET_LOCAL (symbolP
))
3088 /* remove C_EFCN and LOCAL (L...) symbols */
3089 /* next pointer remains valid */
3090 symbol_remove (symbolP
, &symbol_rootP
, &symbol_lastP
);
3093 else if (symbolP
->sy_value
.X_op
== O_symbol
3094 && (! S_IS_DEFINED (symbolP
) || S_IS_COMMON (symbolP
)))
3096 /* Skip symbols which were equated to undefined or common
3098 symbol_remove (symbolP
, &symbol_rootP
, &symbol_lastP
);
3100 else if (!S_IS_DEFINED (symbolP
)
3101 && !S_IS_DEBUG (symbolP
)
3102 && !SF_GET_STATICS (symbolP
)
3103 && (S_GET_STORAGE_CLASS (symbolP
) == C_EXT
3105 || S_GET_STORAGE_CLASS (symbolP
) == C_NT_WEAK
3107 || S_GET_STORAGE_CLASS (symbolP
) == C_WEAKEXT
))
3109 /* if external, Remove from the list */
3110 symbolS
*hold
= symbol_previous (symbolP
);
3112 symbol_remove (symbolP
, &symbol_rootP
, &symbol_lastP
);
3113 symbol_clear_list_pointers (symbolP
);
3114 symbol_append (symbolP
, symbol_extern_lastP
, &symbol_externP
, &symbol_extern_lastP
);
3117 else if (! S_IS_DEBUG (symbolP
)
3118 && ! SF_GET_STATICS (symbolP
)
3119 && ! SF_GET_FUNCTION (symbolP
)
3120 && (S_GET_STORAGE_CLASS (symbolP
) == C_EXT
3122 || S_GET_STORAGE_CLASS (symbolP
) == C_NT_WEAK
3124 || S_GET_STORAGE_CLASS (symbolP
) == C_NT_WEAK
))
3126 symbolS
*hold
= symbol_previous (symbolP
);
3128 /* The O'Reilly COFF book says that defined global symbols
3129 come at the end of the symbol table, just before
3130 undefined global symbols. */
3132 symbol_remove (symbolP
, &symbol_rootP
, &symbol_lastP
);
3133 symbol_clear_list_pointers (symbolP
);
3134 symbol_append (symbolP
, symbol_global_lastP
, &symbol_globalP
,
3135 &symbol_global_lastP
);
3140 if (SF_GET_STRING (symbolP
))
3142 symbolP
->sy_name_offset
= string_byte_count
;
3143 string_byte_count
+= strlen (S_GET_NAME (symbolP
)) + 1;
3147 symbolP
->sy_name_offset
= 0;
3148 } /* fix "long" names */
3150 symbolP
->sy_number
= symbol_number
;
3151 symbol_number
+= 1 + S_GET_NUMBER_AUXILIARY (symbolP
);
3152 } /* if local symbol */
3153 } /* traverse the symbol list */
3154 return symbol_number
;
3159 glue_symbols (head
, tail
)
3163 unsigned int symbol_number
= 0;
3165 while (*head
!= NULL
)
3167 symbolS
*tmp
= *head
;
3170 symbol_remove (tmp
, head
, tail
);
3171 symbol_append (tmp
, symbol_lastP
, &symbol_rootP
, &symbol_lastP
);
3174 if (SF_GET_STRING (tmp
))
3176 tmp
->sy_name_offset
= string_byte_count
;
3177 string_byte_count
+= strlen (S_GET_NAME (tmp
)) + 1;
3181 tmp
->sy_name_offset
= 0;
3182 } /* fix "long" names */
3184 tmp
->sy_number
= symbol_number
;
3185 symbol_number
+= 1 + S_GET_NUMBER_AUXILIARY (tmp
);
3186 } /* append the entire extern chain */
3188 return symbol_number
;
3194 unsigned int symbol_number
= 0;
3197 for (symbolP
= symbol_rootP
; symbolP
; symbolP
= symbol_next (symbolP
))
3199 symbolP
->sy_number
= symbol_number
;
3201 if (SF_GET_TAGGED (symbolP
))
3205 ((symbolS
*) SA_GET_SYM_TAGNDX (symbolP
))->sy_number
);
3208 symbol_number
+= 1 + S_GET_NUMBER_AUXILIARY (symbolP
);
3211 return symbol_number
;
3215 crawl_symbols (h
, abfd
)
3217 bfd
*abfd ATTRIBUTE_UNUSED
;
3221 /* Initialize the stack used to keep track of the matching .bb .be */
3223 block_stack
= stack_init (512, sizeof (symbolS
*));
3225 /* The symbol list should be ordered according to the following sequence
3228 * . debug entries for functions
3229 * . fake symbols for the sections, including .text .data and .bss
3231 * . undefined symbols
3232 * But this is not mandatory. The only important point is to put the
3233 * undefined symbols at the end of the list.
3236 /* Is there a .file symbol ? If not insert one at the beginning. */
3237 if (symbol_rootP
== NULL
3238 || S_GET_STORAGE_CLASS (symbol_rootP
) != C_FILE
)
3240 c_dot_file_symbol ("fake");
3244 * Build up static symbols for the sections, they are filled in later
3247 for (i
= SEG_E0
; i
< SEG_LAST
; i
++)
3248 if (segment_info
[i
].scnhdr
.s_name
[0])
3249 segment_info
[i
].dot
= c_section_symbol (segment_info
[i
].name
,
3252 /* Take all the externals out and put them into another chain */
3253 H_SET_SYMBOL_TABLE_SIZE (h
, yank_symbols ());
3254 /* Take the externals and glue them onto the end.*/
3255 H_SET_SYMBOL_TABLE_SIZE (h
,
3256 (H_GET_SYMBOL_COUNT (h
)
3257 + glue_symbols (&symbol_globalP
,
3258 &symbol_global_lastP
)
3259 + glue_symbols (&symbol_externP
,
3260 &symbol_extern_lastP
)));
3262 H_SET_SYMBOL_TABLE_SIZE (h
, tie_tags ());
3263 know (symbol_globalP
== NULL
);
3264 know (symbol_global_lastP
== NULL
);
3265 know (symbol_externP
== NULL
);
3266 know (symbol_extern_lastP
== NULL
);
3270 * Find strings by crawling along symbol table chain.
3278 struct filename_list
*filename_list_scan
= filename_list_head
;
3280 /* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK */
3281 md_number_to_chars (where
, (valueT
) string_byte_count
, 4);
3284 #ifdef COFF_LONG_SECTION_NAMES
3285 /* Support long section names as found in PE. This code must
3286 coordinate with that in coff_header_append and write_object_file. */
3290 for (i
= SEG_E0
; i
< SEG_LAST
; i
++)
3292 if (segment_info
[i
].scnhdr
.s_name
[0]
3293 && strlen (segment_info
[i
].name
) > SCNNMLEN
)
3297 size
= strlen (segment_info
[i
].name
) + 1;
3298 memcpy (where
, segment_info
[i
].name
, size
);
3303 #endif /* COFF_LONG_SECTION_NAMES */
3305 for (symbolP
= symbol_rootP
;
3307 symbolP
= symbol_next (symbolP
))
3311 if (SF_GET_STRING (symbolP
))
3313 size
= strlen (S_GET_NAME (symbolP
)) + 1;
3314 memcpy (where
, S_GET_NAME (symbolP
), size
);
3317 if (S_GET_STORAGE_CLASS (symbolP
) == C_FILE
3318 && SA_GET_FILE_FNAME_ZEROS (symbolP
) == 0
3319 && SA_GET_FILE_FNAME_OFFSET (symbolP
) != 0)
3321 size
= strlen (filename_list_scan
->filename
) + 1;
3322 memcpy (where
, filename_list_scan
->filename
, size
);
3323 filename_list_scan
= filename_list_scan
->next
;
3330 do_linenos_for (abfd
, h
, file_cursor
)
3333 unsigned long *file_cursor
;
3336 unsigned long start
= *file_cursor
;
3338 for (idx
= SEG_E0
; idx
< SEG_LAST
; idx
++)
3340 segment_info_type
*s
= segment_info
+ idx
;
3342 if (s
->scnhdr
.s_nlnno
!= 0)
3344 struct lineno_list
*line_ptr
;
3346 struct external_lineno
*buffer
=
3347 (struct external_lineno
*) xmalloc (s
->scnhdr
.s_nlnno
* LINESZ
);
3349 struct external_lineno
*dst
= buffer
;
3351 /* Run through the table we've built and turn it into its external
3352 form, take this chance to remove duplicates */
3354 for (line_ptr
= s
->lineno_list_head
;
3355 line_ptr
!= (struct lineno_list
*) NULL
;
3356 line_ptr
= line_ptr
->next
)
3358 if (line_ptr
->line
.l_lnno
== 0)
3360 /* Turn a pointer to a symbol into the symbols' index,
3361 provided that it has been initialised. */
3362 if (line_ptr
->line
.l_addr
.l_symndx
)
3363 line_ptr
->line
.l_addr
.l_symndx
=
3364 ((symbolS
*) line_ptr
->line
.l_addr
.l_symndx
)->sy_number
;
3368 line_ptr
->line
.l_addr
.l_paddr
+= ((struct frag
*) (line_ptr
->frag
))->fr_address
;
3371 (void) bfd_coff_swap_lineno_out (abfd
, &(line_ptr
->line
), dst
);
3376 s
->scnhdr
.s_lnnoptr
= *file_cursor
;
3378 bfd_write (buffer
, 1, s
->scnhdr
.s_nlnno
* LINESZ
, abfd
);
3381 *file_cursor
+= s
->scnhdr
.s_nlnno
* LINESZ
;
3384 H_SET_LINENO_SIZE (h
, *file_cursor
- start
);
3387 /* Now we run through the list of frag chains in a segment and
3388 make all the subsegment frags appear at the end of the
3389 list, as if the seg 0 was extra long */
3396 for (i
= SEG_E0
; i
< SEG_UNKNOWN
; i
++)
3398 frchainS
*head
= segment_info
[i
].frchainP
;
3400 fragS
*prev_frag
= &dummy
;
3402 while (head
&& head
->frch_seg
== i
)
3404 prev_frag
->fr_next
= head
->frch_root
;
3405 prev_frag
= head
->frch_last
;
3406 head
= head
->frch_next
;
3408 prev_frag
->fr_next
= 0;
3412 unsigned long machine
;
3415 write_object_file ()
3419 struct frchain
*frchain_ptr
;
3421 object_headers headers
;
3422 unsigned long file_cursor
;
3425 abfd
= bfd_openw (out_file_name
, TARGET_FORMAT
);
3429 as_perror (_("FATAL: Can't create %s"), out_file_name
);
3430 exit (EXIT_FAILURE
);
3432 bfd_set_format (abfd
, bfd_object
);
3433 bfd_set_arch_mach (abfd
, BFD_ARCH
, machine
);
3435 string_byte_count
= 4;
3437 for (frchain_ptr
= frchain_root
;
3438 frchain_ptr
!= (struct frchain
*) NULL
;
3439 frchain_ptr
= frchain_ptr
->frch_next
)
3441 /* Run through all the sub-segments and align them up. Also
3442 close any open frags. We tack a .fill onto the end of the
3443 frag chain so that any .align's size can be worked by looking
3444 at the next frag. */
3446 subseg_set (frchain_ptr
->frch_seg
, frchain_ptr
->frch_subseg
);
3448 #ifndef SUB_SEGMENT_ALIGN
3449 #define SUB_SEGMENT_ALIGN(SEG) 1
3452 md_do_align (SUB_SEGMENT_ALIGN (now_seg
), (char *) NULL
, 0, 0,
3455 if (subseg_text_p (now_seg
))
3456 frag_align_code (SUB_SEGMENT_ALIGN (now_seg
), 0);
3458 frag_align (SUB_SEGMENT_ALIGN (now_seg
), 0, 0);
3464 frag_wane (frag_now
);
3465 frag_now
->fr_fix
= 0;
3466 know (frag_now
->fr_next
== NULL
);
3471 for (i
= SEG_E0
; i
< SEG_UNKNOWN
; i
++)
3473 relax_segment (segment_info
[i
].frchainP
->frch_root
, i
);
3476 H_SET_NUMBER_OF_SECTIONS (&headers
, 0);
3478 /* Find out how big the sections are, and set the addresses. */
3480 for (i
= SEG_E0
; i
< SEG_UNKNOWN
; i
++)
3484 segment_info
[i
].scnhdr
.s_paddr
= addr
;
3485 segment_info
[i
].scnhdr
.s_vaddr
= addr
;
3487 if (segment_info
[i
].scnhdr
.s_name
[0])
3489 H_SET_NUMBER_OF_SECTIONS (&headers
,
3490 H_GET_NUMBER_OF_SECTIONS (&headers
) + 1);
3492 #ifdef COFF_LONG_SECTION_NAMES
3493 /* Support long section names as found in PE. This code
3494 must coordinate with that in coff_header_append and
3499 len
= strlen (segment_info
[i
].name
);
3501 string_byte_count
+= len
+ 1;
3503 #endif /* COFF_LONG_SECTION_NAMES */
3506 size
= size_section (abfd
, (unsigned int) i
);
3509 /* I think the section alignment is only used on the i960; the
3510 i960 needs it, and it should do no harm on other targets. */
3511 #ifdef ALIGNMENT_IN_S_FLAGS
3512 segment_info
[i
].scnhdr
.s_flags
|= (section_alignment
[i
] & 0xF) << 8;
3514 segment_info
[i
].scnhdr
.s_align
= 1 << section_alignment
[i
];
3518 H_SET_TEXT_SIZE (&headers
, size
);
3519 else if (i
== SEG_E1
)
3520 H_SET_DATA_SIZE (&headers
, size
);
3521 else if (i
== SEG_E2
)
3522 H_SET_BSS_SIZE (&headers
, size
);
3525 /* Turn the gas native symbol table shape into a coff symbol table */
3526 crawl_symbols (&headers
, abfd
);
3528 if (string_byte_count
== 4)
3529 string_byte_count
= 0;
3531 H_SET_STRING_SIZE (&headers
, string_byte_count
);
3537 for (i
= SEG_E0
; i
< SEG_UNKNOWN
; i
++)
3539 fixup_mdeps (segment_info
[i
].frchainP
->frch_root
, &headers
, i
);
3540 fixup_segment (&segment_info
[i
], i
);
3543 /* Look for ".stab" segments and fill in their initial symbols
3545 for (i
= SEG_E0
; i
< SEG_UNKNOWN
; i
++)
3547 name
= segment_info
[i
].name
;
3550 && strncmp (".stab", name
, 5) == 0
3551 && strncmp (".stabstr", name
, 8) != 0)
3552 adjust_stab_section (abfd
, i
);
3555 file_cursor
= H_GET_TEXT_FILE_OFFSET (&headers
);
3557 bfd_seek (abfd
, (file_ptr
) file_cursor
, 0);
3559 /* Plant the data */
3561 fill_section (abfd
, &headers
, &file_cursor
);
3563 do_relocs_for (abfd
, &headers
, &file_cursor
);
3565 do_linenos_for (abfd
, &headers
, &file_cursor
);
3567 H_SET_FILE_MAGIC_NUMBER (&headers
, COFF_MAGIC
);
3568 #ifndef OBJ_COFF_OMIT_TIMESTAMP
3569 H_SET_TIME_STAMP (&headers
, (long)time((time_t *)0));
3571 H_SET_TIME_STAMP (&headers
, 0);
3573 #ifdef TC_COFF_SET_MACHINE
3574 TC_COFF_SET_MACHINE (&headers
);
3578 #define COFF_FLAGS 0
3581 #ifdef KEEP_RELOC_INFO
3582 H_SET_FLAGS (&headers
, ((H_GET_LINENO_SIZE(&headers
) ? 0 : F_LNNO
) |
3583 COFF_FLAGS
| coff_flags
));
3585 H_SET_FLAGS (&headers
, ((H_GET_LINENO_SIZE(&headers
) ? 0 : F_LNNO
) |
3586 (H_GET_RELOCATION_SIZE(&headers
) ? 0 : F_RELFLG
) |
3587 COFF_FLAGS
| coff_flags
));
3591 unsigned int symtable_size
= H_GET_SYMBOL_TABLE_SIZE (&headers
);
3592 char *buffer1
= xmalloc (symtable_size
+ string_byte_count
+ 1);
3594 H_SET_SYMBOL_TABLE_POINTER (&headers
, bfd_tell (abfd
));
3595 w_symbols (abfd
, buffer1
, symbol_rootP
);
3596 if (string_byte_count
> 0)
3597 w_strings (buffer1
+ symtable_size
);
3598 bfd_write (buffer1
, 1, symtable_size
+ string_byte_count
, abfd
);
3602 coff_header_append (abfd
, &headers
);
3604 /* Recent changes to write need this, but where it should
3605 go is up to Ken.. */
3606 if (bfd_close_all_done (abfd
) == false)
3607 as_fatal (_("Can't close %s: %s"), out_file_name
,
3608 bfd_errmsg (bfd_get_error ()));
3611 extern bfd
*stdoutput
;
3618 /* Add a new segment. This is called from subseg_new via the
3619 obj_new_segment macro. */
3622 obj_coff_add_segment (name
)
3627 #ifndef COFF_LONG_SECTION_NAMES
3628 char buf
[SCNNMLEN
+ 1];
3630 strncpy (buf
, name
, SCNNMLEN
);
3631 buf
[SCNNMLEN
] = '\0';
3635 for (i
= SEG_E0
; i
< SEG_LAST
&& segment_info
[i
].scnhdr
.s_name
[0]; i
++)
3636 if (strcmp (name
, segment_info
[i
].name
) == 0)
3641 as_bad (_("Too many new sections; can't add \"%s\""), name
);
3645 /* Add a new section. */
3646 strncpy (segment_info
[i
].scnhdr
.s_name
, name
,
3647 sizeof (segment_info
[i
].scnhdr
.s_name
));
3648 segment_info
[i
].scnhdr
.s_flags
= STYP_REG
;
3649 segment_info
[i
].name
= xstrdup (name
);
3655 * implement the .section pseudo op:
3656 * .section name {, "flags"}
3658 * | +--- optional flags: 'b' for bss
3660 * +-- section name 'l' for lib
3664 * 'd' (apparently m88k for data)
3666 * 'r' for read-only data
3667 * But if the argument is not a quoted string, treat it as a
3668 * subsegment number.
3672 obj_coff_section (ignore
)
3673 int ignore ATTRIBUTE_UNUSED
;
3675 /* Strip out the section name */
3676 char *section_name
, *name
;
3689 else if (type
== 'D')
3691 segment_info
[now_seg
].scnhdr
.s_flags
|= flags
;
3696 section_name
= input_line_pointer
;
3697 c
= get_symbol_end ();
3699 name
= xmalloc (input_line_pointer
- section_name
+ 1);
3700 strcpy (name
, section_name
);
3702 *input_line_pointer
= c
;
3708 if (*input_line_pointer
== ',')
3710 ++input_line_pointer
;
3713 if (*input_line_pointer
!= '"')
3714 exp
= get_absolute_expression ();
3717 ++input_line_pointer
;
3718 while (*input_line_pointer
!= '"'
3719 && ! is_end_of_line
[(unsigned char) *input_line_pointer
])
3721 switch (*input_line_pointer
)
3723 case 'b': flags
|= STYP_BSS
; break;
3724 case 'i': flags
|= STYP_INFO
; break;
3725 case 'l': flags
|= STYP_LIB
; break;
3726 case 'n': flags
|= STYP_NOLOAD
; break;
3727 case 'o': flags
|= STYP_OVER
; break;
3729 case 'w': flags
|= STYP_DATA
; break;
3730 case 'x': flags
|= STYP_TEXT
; break;
3731 case 'r': flags
|= STYP_LIT
; break;
3733 as_warn(_("unknown section attribute '%c'"),
3734 *input_line_pointer
);
3737 ++input_line_pointer
;
3739 if (*input_line_pointer
== '"')
3740 ++input_line_pointer
;
3744 subseg_new (name
, (subsegT
) exp
);
3746 segment_info
[now_seg
].scnhdr
.s_flags
|= flags
;
3748 demand_empty_rest_of_line ();
3752 obj_coff_text (ignore
)
3753 int ignore ATTRIBUTE_UNUSED
;
3755 subseg_new (".text", get_absolute_expression ());
3759 obj_coff_data (ignore
)
3760 int ignore ATTRIBUTE_UNUSED
;
3762 if (flag_readonly_data_in_text
)
3763 subseg_new (".text", get_absolute_expression () + 1000);
3765 subseg_new (".data", get_absolute_expression ());
3769 obj_coff_ident (ignore
)
3770 int ignore ATTRIBUTE_UNUSED
;
3772 segT current_seg
= now_seg
; /* save current seg */
3773 subsegT current_subseg
= now_subseg
;
3774 subseg_new (".comment", 0); /* .comment seg */
3775 stringer (1); /* read string */
3776 subseg_set (current_seg
, current_subseg
); /* restore current seg */
3780 c_symbol_merge (debug
, normal
)
3784 S_SET_DATA_TYPE (normal
, S_GET_DATA_TYPE (debug
));
3785 S_SET_STORAGE_CLASS (normal
, S_GET_STORAGE_CLASS (debug
));
3787 if (S_GET_NUMBER_AUXILIARY (debug
) > S_GET_NUMBER_AUXILIARY (normal
))
3789 S_SET_NUMBER_AUXILIARY (normal
, S_GET_NUMBER_AUXILIARY (debug
));
3790 } /* take the most we have */
3792 if (S_GET_NUMBER_AUXILIARY (debug
) > 0)
3794 memcpy ((char *) &normal
->sy_symbol
.ost_auxent
[0],
3795 (char *) &debug
->sy_symbol
.ost_auxent
[0],
3796 (unsigned int) (S_GET_NUMBER_AUXILIARY (debug
) * AUXESZ
));
3797 } /* Move all the auxiliary information */
3799 /* Move the debug flags. */
3800 SF_SET_DEBUG_FIELD (normal
, SF_GET_DEBUG_FIELD (debug
));
3801 } /* c_symbol_merge() */
3804 c_line_new (symbol
, paddr
, line_number
, frag
)
3810 struct lineno_list
*new_line
=
3811 (struct lineno_list
*) xmalloc (sizeof (struct lineno_list
));
3813 segment_info_type
*s
= segment_info
+ now_seg
;
3814 new_line
->line
.l_lnno
= line_number
;
3816 if (line_number
== 0)
3818 last_line_symbol
= symbol
;
3819 new_line
->line
.l_addr
.l_symndx
= (long) symbol
;
3823 new_line
->line
.l_addr
.l_paddr
= paddr
;
3826 new_line
->frag
= (char *) frag
;
3827 new_line
->next
= (struct lineno_list
*) NULL
;
3829 if (s
->lineno_list_head
== (struct lineno_list
*) NULL
)
3831 s
->lineno_list_head
= new_line
;
3835 s
->lineno_list_tail
->next
= new_line
;
3837 s
->lineno_list_tail
= new_line
;
3838 return LINESZ
* s
->scnhdr
.s_nlnno
++;
3842 c_dot_file_symbol (filename
)
3847 symbolP
= symbol_new (".file",
3850 &zero_address_frag
);
3852 S_SET_STORAGE_CLASS (symbolP
, C_FILE
);
3853 S_SET_NUMBER_AUXILIARY (symbolP
, 1);
3855 if (strlen (filename
) > FILNMLEN
)
3857 /* Filename is too long to fit into an auxent,
3858 we stick it into the string table instead. We keep
3859 a linked list of the filenames we find so we can emit
3861 struct filename_list
*f
= ((struct filename_list
*)
3862 xmalloc (sizeof (struct filename_list
)));
3864 f
->filename
= filename
;
3867 SA_SET_FILE_FNAME_ZEROS (symbolP
, 0);
3868 SA_SET_FILE_FNAME_OFFSET (symbolP
, 1);
3870 if (filename_list_tail
)
3871 filename_list_tail
->next
= f
;
3873 filename_list_head
= f
;
3874 filename_list_tail
= f
;
3878 SA_SET_FILE_FNAME (symbolP
, filename
);
3885 listing_source_file (filename
);
3891 SF_SET_DEBUG (symbolP
);
3892 S_SET_VALUE (symbolP
, (valueT
) previous_file_symbol
);
3894 previous_file_symbol
= symbolP
;
3896 /* Make sure that the symbol is first on the symbol chain */
3897 if (symbol_rootP
!= symbolP
)
3899 symbol_remove (symbolP
, &symbol_rootP
, &symbol_lastP
);
3900 symbol_insert (symbolP
, symbol_rootP
, &symbol_rootP
, &symbol_lastP
);
3902 } /* c_dot_file_symbol() */
3905 * Build a 'section static' symbol.
3909 c_section_symbol (name
, idx
)
3915 symbolP
= symbol_find_base (name
, DO_NOT_STRIP
);
3916 if (symbolP
== NULL
)
3917 symbolP
= symbol_new (name
, idx
, 0, &zero_address_frag
);
3920 /* Mmmm. I just love violating interfaces. Makes me feel...dirty. */
3921 S_SET_SEGMENT (symbolP
, idx
);
3922 symbolP
->sy_frag
= &zero_address_frag
;
3925 S_SET_STORAGE_CLASS (symbolP
, C_STAT
);
3926 S_SET_NUMBER_AUXILIARY (symbolP
, 1);
3928 SF_SET_STATICS (symbolP
);
3931 /* manfred@s-direktnet.de: section symbols *must* have the LOCAL bit cleared,
3932 which is set by the new definition of LOCAL_LABEL in tc-m68k.h. */
3933 SF_CLEAR_LOCAL (symbolP
);
3936 /* If the .linkonce pseudo-op was used for this section, we must
3937 store the information in the auxiliary entry for the section
3939 if (segment_info
[idx
].linkonce
!= LINKONCE_UNSET
)
3943 switch (segment_info
[idx
].linkonce
)
3947 case LINKONCE_DISCARD
:
3948 type
= IMAGE_COMDAT_SELECT_ANY
;
3950 case LINKONCE_ONE_ONLY
:
3951 type
= IMAGE_COMDAT_SELECT_NODUPLICATES
;
3953 case LINKONCE_SAME_SIZE
:
3954 type
= IMAGE_COMDAT_SELECT_SAME_SIZE
;
3956 case LINKONCE_SAME_CONTENTS
:
3957 type
= IMAGE_COMDAT_SELECT_EXACT_MATCH
;
3961 SYM_AUXENT (symbolP
)->x_scn
.x_comdat
= type
;
3966 } /* c_section_symbol() */
3969 w_symbols (abfd
, where
, symbol_rootP
)
3972 symbolS
* symbol_rootP
;
3977 /* First fill in those values we have only just worked out */
3978 for (i
= SEG_E0
; i
< SEG_LAST
; i
++)
3980 symbolP
= segment_info
[i
].dot
;
3983 SA_SET_SCN_SCNLEN (symbolP
, segment_info
[i
].scnhdr
.s_size
);
3984 SA_SET_SCN_NRELOC (symbolP
, segment_info
[i
].scnhdr
.s_nreloc
);
3985 SA_SET_SCN_NLINNO (symbolP
, segment_info
[i
].scnhdr
.s_nlnno
);
3990 * Emit all symbols left in the symbol chain.
3992 for (symbolP
= symbol_rootP
; symbolP
; symbolP
= symbol_next (symbolP
))
3994 /* Used to save the offset of the name. It is used to point
3995 to the string in memory but must be a file offset. */
3996 register char *temp
;
3998 /* We can't fix the lnnoptr field in yank_symbols with the other
3999 adjustments, because we have to wait until we know where they
4001 if (SF_GET_ADJ_LNNOPTR (symbolP
))
4003 SA_GET_SYM_LNNOPTR (symbolP
) +=
4004 segment_info
[S_GET_SEGMENT (symbolP
)].scnhdr
.s_lnnoptr
;
4007 tc_coff_symbol_emit_hook (symbolP
);
4009 temp
= S_GET_NAME (symbolP
);
4010 if (SF_GET_STRING (symbolP
))
4012 S_SET_OFFSET (symbolP
, symbolP
->sy_name_offset
);
4013 S_SET_ZEROES (symbolP
, 0);
4017 memset (symbolP
->sy_symbol
.ost_entry
.n_name
, 0, SYMNMLEN
);
4018 strncpy (symbolP
->sy_symbol
.ost_entry
.n_name
, temp
, SYMNMLEN
);
4020 where
= symbol_to_chars (abfd
, where
, symbolP
);
4021 S_SET_NAME (symbolP
, temp
);
4027 obj_coff_lcomm (ignore
)
4028 int ignore ATTRIBUTE_UNUSED
;
4040 name
= input_line_pointer
;
4042 c
= get_symbol_end ();
4043 p
= input_line_pointer
;
4046 if (*input_line_pointer
!= ',')
4048 as_bad (_("Expected comma after name"));
4049 ignore_rest_of_line ();
4052 if (*input_line_pointer
== '\n')
4054 as_bad (_("Missing size expression"));
4057 input_line_pointer
++;
4058 if ((temp
= get_absolute_expression ()) < 0)
4060 as_warn (_("lcomm length (%d.) <0! Ignored."), temp
);
4061 ignore_rest_of_line ();
4066 symbolP
= symbol_find_or_make (name
);
4068 if (S_GET_SEGMENT (symbolP
) == SEG_UNKNOWN
&&
4069 S_GET_VALUE (symbolP
) == 0)
4074 segT current_seg
= now_seg
; /* save current seg */
4075 subsegT current_subseg
= now_subseg
;
4077 subseg_set (SEG_E2
, 1);
4078 symbolP
->sy_frag
= frag_now
;
4079 p
= frag_var(rs_org
, 1, 1, (relax_substateT
)0, symbolP
,
4080 (offsetT
) temp
, (char *) 0);
4082 subseg_set (current_seg
, current_subseg
); /* restore current seg */
4083 S_SET_SEGMENT (symbolP
, SEG_E2
);
4084 S_SET_STORAGE_CLASS (symbolP
, C_STAT
);
4088 as_bad (_("Symbol %s already defined"), name
);
4090 demand_empty_rest_of_line ();
4095 fixup_mdeps (frags
, h
, this_segment
)
4100 subseg_change (this_segment
, 0);
4103 switch (frags
->fr_type
)
4110 HANDLE_ALIGN (frags
);
4112 frags
->fr_type
= rs_fill
;
4114 ((frags
->fr_next
->fr_address
- frags
->fr_address
- frags
->fr_fix
)
4117 case rs_machine_dependent
:
4118 md_convert_frag (h
, this_segment
, frags
);
4124 frags
= frags
->fr_next
;
4130 #ifndef TC_FORCE_RELOCATION
4131 #define TC_FORCE_RELOCATION(fix) 0
4135 fixup_segment (segP
, this_segment_type
)
4136 segment_info_type
* segP
;
4137 segT this_segment_type
;
4139 register fixS
* fixP
;
4140 register symbolS
*add_symbolP
;
4141 register symbolS
*sub_symbolP
;
4144 register char *place
;
4145 register long where
;
4146 register char pcrel
;
4147 register fragS
*fragP
;
4148 register segT add_symbol_segment
= absolute_section
;
4150 for (fixP
= segP
->fix_root
; fixP
; fixP
= fixP
->fx_next
)
4152 fragP
= fixP
->fx_frag
;
4154 where
= fixP
->fx_where
;
4155 place
= fragP
->fr_literal
+ where
;
4156 size
= fixP
->fx_size
;
4157 add_symbolP
= fixP
->fx_addsy
;
4158 sub_symbolP
= fixP
->fx_subsy
;
4159 add_number
= fixP
->fx_offset
;
4160 pcrel
= fixP
->fx_pcrel
;
4162 /* We want function-relative stabs to work on systems which
4163 may use a relaxing linker; thus we must handle the sym1-sym2
4164 fixups function-relative stabs generates.
4166 Of course, if you actually enable relaxing in the linker, the
4167 line and block scoping information is going to be incorrect
4168 in some cases. The only way to really fix this is to support
4169 a reloc involving the difference of two symbols. */
4171 && (!sub_symbolP
|| pcrel
))
4175 if (fixP
->fx_tcbit
&& SF_GET_CALLNAME (add_symbolP
))
4177 /* Relocation should be done via the associated 'bal' entry
4180 if (!SF_GET_BALNAME (tc_get_bal_of_call (add_symbolP
)))
4182 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
4183 _("No 'bal' entry point for leafproc %s"),
4184 S_GET_NAME (add_symbolP
));
4187 fixP
->fx_addsy
= add_symbolP
= tc_get_bal_of_call (add_symbolP
);
4191 /* Make sure the symbols have been resolved; this may not have
4192 happened if these are expression symbols. */
4193 if (add_symbolP
!= NULL
&& ! add_symbolP
->sy_resolved
)
4194 resolve_symbol_value (add_symbolP
);
4196 if (add_symbolP
!= NULL
)
4198 /* If this fixup is against a symbol which has been equated
4199 to another symbol, convert it to the other symbol. */
4200 if (add_symbolP
->sy_value
.X_op
== O_symbol
4201 && (! S_IS_DEFINED (add_symbolP
)
4202 || S_IS_COMMON (add_symbolP
)))
4204 while (add_symbolP
->sy_value
.X_op
== O_symbol
4205 && (! S_IS_DEFINED (add_symbolP
)
4206 || S_IS_COMMON (add_symbolP
)))
4210 /* We must avoid looping, as that can occur with a
4211 badly written program. */
4212 n
= add_symbolP
->sy_value
.X_add_symbol
;
4213 if (n
== add_symbolP
)
4215 add_number
+= add_symbolP
->sy_value
.X_add_number
;
4218 fixP
->fx_addsy
= add_symbolP
;
4219 fixP
->fx_offset
= add_number
;
4223 if (sub_symbolP
!= NULL
&& ! sub_symbolP
->sy_resolved
)
4224 resolve_symbol_value (sub_symbolP
);
4226 if (add_symbolP
!= NULL
4227 && add_symbolP
->sy_mri_common
)
4229 know (add_symbolP
->sy_value
.X_op
== O_symbol
);
4230 add_number
+= S_GET_VALUE (add_symbolP
);
4231 fixP
->fx_offset
= add_number
;
4232 add_symbolP
= fixP
->fx_addsy
= add_symbolP
->sy_value
.X_add_symbol
;
4237 add_symbol_segment
= S_GET_SEGMENT (add_symbolP
);
4238 } /* if there is an addend */
4242 if (add_symbolP
== NULL
|| add_symbol_segment
== absolute_section
)
4244 if (add_symbolP
!= NULL
)
4246 add_number
+= S_GET_VALUE (add_symbolP
);
4248 fixP
->fx_addsy
= NULL
;
4251 /* It's just -sym. */
4252 if (S_GET_SEGMENT (sub_symbolP
) == absolute_section
)
4254 add_number
-= S_GET_VALUE (sub_symbolP
);
4261 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
4262 _("Negative of non-absolute symbol %s"),
4263 S_GET_NAME (sub_symbolP
));
4265 add_number
-= S_GET_VALUE (sub_symbolP
);
4266 } /* not absolute */
4268 /* if sub_symbol is in the same segment that add_symbol
4269 and add_symbol is either in DATA, TEXT, BSS or ABSOLUTE */
4271 else if (S_GET_SEGMENT (sub_symbolP
) == add_symbol_segment
4272 && SEG_NORMAL (add_symbol_segment
))
4274 /* Difference of 2 symbols from same segment. Can't
4275 make difference of 2 undefineds: 'value' means
4276 something different for N_UNDF. */
4278 /* Makes no sense to use the difference of 2 arbitrary symbols
4279 as the target of a call instruction. */
4282 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
4283 _("callj to difference of 2 symbols"));
4285 #endif /* TC_I960 */
4286 add_number
+= S_GET_VALUE (add_symbolP
) -
4287 S_GET_VALUE (sub_symbolP
);
4290 if (!TC_FORCE_RELOCATION (fixP
))
4292 fixP
->fx_addsy
= NULL
;
4293 fixP
->fx_subsy
= NULL
;
4295 #ifdef TC_M68K /* is this right? */
4303 /* Different segments in subtraction. */
4304 know (!(S_IS_EXTERNAL (sub_symbolP
) && (S_GET_SEGMENT (sub_symbolP
) == absolute_section
)));
4306 if ((S_GET_SEGMENT (sub_symbolP
) == absolute_section
))
4308 add_number
-= S_GET_VALUE (sub_symbolP
);
4311 else if (S_GET_SEGMENT (sub_symbolP
) == this_segment_type
4312 #if 0 /* Okay for 68k, at least... */
4317 /* Make it pc-relative. */
4318 add_number
+= (md_pcrel_from (fixP
)
4319 - S_GET_VALUE (sub_symbolP
));
4328 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
4329 _("Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %ld."),
4330 segment_name (S_GET_SEGMENT (sub_symbolP
)),
4331 S_GET_NAME (sub_symbolP
),
4332 (long) (fragP
->fr_address
+ where
));
4335 } /* if sub_symbolP */
4339 if (add_symbol_segment
== this_segment_type
&& pcrel
)
4342 * This fixup was made when the symbol's segment was
4343 * SEG_UNKNOWN, but it is now in the local segment.
4344 * So we know how to do the address without relocation.
4347 /* reloc_callj() may replace a 'call' with a 'calls' or a 'bal',
4348 * in which cases it modifies *fixP as appropriate. In the case
4349 * of a 'calls', no further work is required, and *fixP has been
4350 * set up to make the rest of the code below a no-op.
4353 #endif /* TC_I960 */
4355 add_number
+= S_GET_VALUE (add_symbolP
);
4356 add_number
-= md_pcrel_from (fixP
);
4359 add_number -= segP->scnhdr.s_vaddr;
4360 if defined (TC_I386) || defined (TE_LYNX). I now
4361 think that was an error propagated from the case when
4362 we are going to emit the relocation. If we are not
4363 going to emit the relocation, then we just want to
4364 set add_number to the difference between the symbols.
4365 This is a case that would only arise when there is a
4366 PC relative reference from a section other than .text
4367 to a symbol defined in the same section, and the
4368 reference is not relaxed. Since jump instructions on
4369 the i386 are relaxed, this could only arise with a
4370 call instruction. */
4372 pcrel
= 0; /* Lie. Don't want further pcrel processing. */
4373 if (!TC_FORCE_RELOCATION (fixP
))
4375 fixP
->fx_addsy
= NULL
;
4381 switch (add_symbol_segment
)
4383 case absolute_section
:
4385 reloc_callj (fixP
); /* See comment about reloc_callj() above*/
4386 #endif /* TC_I960 */
4387 add_number
+= S_GET_VALUE (add_symbolP
);
4390 if (!TC_FORCE_RELOCATION (fixP
))
4392 fixP
->fx_addsy
= NULL
;
4398 #if defined(TC_A29K) || (defined(TE_PE) && defined(TC_I386)) || defined(TC_M88K)
4399 /* This really should be handled in the linker, but
4400 backward compatibility forbids. */
4401 add_number
+= S_GET_VALUE (add_symbolP
);
4403 add_number
+= S_GET_VALUE (add_symbolP
) +
4404 segment_info
[S_GET_SEGMENT (add_symbolP
)].scnhdr
.s_paddr
;
4410 if ((int) fixP
->fx_bit_fixP
== 13)
4412 /* This is a COBR instruction. They have only a
4413 * 13-bit displacement and are only to be used
4414 * for local branches: flag as error, don't generate
4417 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
4418 _("can't use COBR format with external label"));
4419 fixP
->fx_addsy
= NULL
;
4423 #endif /* TC_I960 */
4424 #if ((defined (TC_I386) || defined (TE_LYNX) || defined (TE_AUX)) && !defined(TE_PE)) || defined (COFF_COMMON_ADDEND)
4425 /* 386 COFF uses a peculiar format in which the
4426 value of a common symbol is stored in the .text
4427 segment (I've checked this on SVR3.2 and SCO
4428 3.2.2) Ian Taylor <ian@cygnus.com>. */
4429 /* This is also true for 68k COFF on sysv machines
4430 (Checked on Motorola sysv68 R3V6 and R3V7.1, and also on
4431 UNIX System V/M68000, Release 1.0 from ATT/Bell Labs)
4432 Philippe De Muyter <phdm@info.ucl.ac.be>. */
4433 if (S_IS_COMMON (add_symbolP
))
4434 add_number
+= S_GET_VALUE (add_symbolP
);
4438 } /* switch on symbol seg */
4439 } /* if not in local seg */
4440 } /* if there was a + symbol */
4444 #if !defined(TC_M88K) && !(defined(TE_PE) && defined(TC_I386)) && !defined(TC_A29K)
4445 /* This adjustment is not correct on the m88k, for which the
4446 linker does all the computation. */
4447 add_number
-= md_pcrel_from (fixP
);
4449 if (add_symbolP
== 0)
4451 fixP
->fx_addsy
= &abs_symbol
;
4452 } /* if there's an add_symbol */
4453 #if defined (TC_I386) || defined (TE_LYNX) || defined (TC_I960) || defined (TC_M68K)
4454 /* On the 386 we must adjust by the segment vaddr as well.
4457 I changed the i960 to work this way as well. This is
4458 compatible with the current GNU linker behaviour. I do
4459 not know what other i960 COFF assemblers do. This is not
4460 a common case: normally, only assembler code will contain
4461 a PC relative reloc, and only branches which do not
4462 originate in the .text section will have a non-zero
4465 I changed the m68k to work this way as well. This will
4466 break existing PC relative relocs from sections which do
4467 not start at address 0, but it will make ld -r work.
4468 Ian Taylor, 4 Oct 96. */
4470 add_number
-= segP
->scnhdr
.s_vaddr
;
4474 #ifdef MD_APPLY_FIX3
4475 md_apply_fix3 (fixP
, (valueT
*) &add_number
, this_segment_type
);
4477 md_apply_fix (fixP
, add_number
);
4480 if (!fixP
->fx_bit_fixP
&& ! fixP
->fx_no_overflow
)
4483 /* The m88k uses the offset field of the reloc to get around
4486 && ((add_number
& ~0xFF)
4487 || (fixP
->fx_signed
&& (add_number
& 0x80)))
4488 && ((add_number
& ~0xFF) != (-1 & ~0xFF)
4489 || (add_number
& 0x80) == 0))
4491 && ((add_number
& ~0xFFFF)
4492 || (fixP
->fx_signed
&& (add_number
& 0x8000)))
4493 && ((add_number
& ~0xFFFF) != (-1 & ~0xFFFF)
4494 || (add_number
& 0x8000) == 0)))
4496 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
4497 _("Value of %ld too large for field of %d bytes at 0x%lx"),
4498 (long) add_number
, size
,
4499 (unsigned long) (fragP
->fr_address
+ where
));
4502 #ifdef WARN_SIGNED_OVERFLOW_WORD
4503 /* Warn if a .word value is too large when treated as a
4504 signed number. We already know it is not too negative.
4505 This is to catch over-large switches generated by gcc on
4507 if (!flag_signed_overflow_ok
4509 && add_number
> 0x7fff)
4510 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
4511 _("Signed .word overflow; switch may be too large; %ld at 0x%lx"),
4513 (unsigned long) (fragP
->fr_address
+ where
));
4515 } /* not a bit fix */
4516 } /* For each fixS in this segment. */
4517 } /* fixup_segment() */
4521 /* The first entry in a .stab section is special. */
4524 obj_coff_init_stab_section (seg
)
4530 unsigned int stroff
;
4532 /* Make space for this first symbol. */
4536 as_where (&file
, (unsigned int *) NULL
);
4537 stabstr_name
= (char *) alloca (strlen (segment_info
[seg
].name
) + 4);
4538 strcpy (stabstr_name
, segment_info
[seg
].name
);
4539 strcat (stabstr_name
, "str");
4540 stroff
= get_stab_string_offset (file
, stabstr_name
);
4542 md_number_to_chars (p
, stroff
, 4);
4545 /* Fill in the counts in the first entry in a .stab section. */
4548 adjust_stab_section(abfd
, seg
)
4552 segT stabstrseg
= SEG_UNKNOWN
;
4553 const char *secname
, *name2
;
4556 int i
, strsz
= 0, nsyms
;
4557 fragS
*frag
= segment_info
[seg
].frchainP
->frch_root
;
4559 /* Look for the associated string table section. */
4561 secname
= segment_info
[seg
].name
;
4562 name
= (char *) alloca (strlen (secname
) + 4);
4563 strcpy (name
, secname
);
4564 strcat (name
, "str");
4566 for (i
= SEG_E0
; i
< SEG_UNKNOWN
; i
++)
4568 name2
= segment_info
[i
].name
;
4569 if (name2
!= NULL
&& strncmp(name2
, name
, 8) == 0)
4576 /* If we found the section, get its size. */
4577 if (stabstrseg
!= SEG_UNKNOWN
)
4578 strsz
= size_section (abfd
, stabstrseg
);
4580 nsyms
= size_section (abfd
, seg
) / 12 - 1;
4582 /* Look for the first frag of sufficient size for the initial stab
4583 symbol, and collect a pointer to it. */
4584 while (frag
&& frag
->fr_fix
< 12)
4585 frag
= frag
->fr_next
;
4587 p
= frag
->fr_literal
;
4590 /* Write in the number of stab symbols and the size of the string
4592 bfd_h_put_16 (abfd
, (bfd_vma
) nsyms
, (bfd_byte
*) p
+ 6);
4593 bfd_h_put_32 (abfd
, (bfd_vma
) strsz
, (bfd_byte
*) p
+ 8);
4596 #endif /* not BFD_ASSEMBLER */
4598 const pseudo_typeS coff_pseudo_table
[] =
4600 {"def", obj_coff_def
, 0},
4601 {"dim", obj_coff_dim
, 0},
4602 {"endef", obj_coff_endef
, 0},
4603 {"line", obj_coff_line
, 0},
4604 {"ln", obj_coff_ln
, 0},
4605 #ifdef BFD_ASSEMBLER
4606 {"loc", obj_coff_loc
, 0},
4608 {"appline", obj_coff_ln
, 1},
4609 {"scl", obj_coff_scl
, 0},
4610 {"size", obj_coff_size
, 0},
4611 {"tag", obj_coff_tag
, 0},
4612 {"type", obj_coff_type
, 0},
4613 {"val", obj_coff_val
, 0},
4614 {"section", obj_coff_section
, 0},
4615 {"sect", obj_coff_section
, 0},
4616 /* FIXME: We ignore the MRI short attribute. */
4617 {"section.s", obj_coff_section
, 0},
4618 {"sect.s", obj_coff_section
, 0},
4619 /* We accept the .bss directive for backward compatibility with
4620 earlier versions of gas. */
4621 {"bss", obj_coff_bss
, 0},
4622 {"weak", obj_coff_weak
, 0},
4623 {"ident", obj_coff_ident
, 0},
4624 #ifndef BFD_ASSEMBLER
4625 {"use", obj_coff_section
, 0},
4626 {"text", obj_coff_text
, 0},
4627 {"data", obj_coff_data
, 0},
4628 {"lcomm", obj_coff_lcomm
, 0},
4630 {"optim", s_ignore
, 0}, /* For sun386i cc (?) */
4632 {"version", s_ignore
, 0},
4633 {"ABORT", s_abort
, 0},
4635 /* The m88k uses sdef instead of def. */
4636 {"sdef", obj_coff_def
, 0},
4638 {NULL
, NULL
, 0} /* end sentinel */
4639 }; /* coff_pseudo_table */
4641 #ifdef BFD_ASSEMBLER
4643 /* Support for a COFF emulation. */
4645 static void coff_pop_insert
PARAMS ((void));
4646 static int coff_separate_stab_sections
PARAMS ((void));
4651 pop_insert (coff_pseudo_table
);
4655 coff_separate_stab_sections ()
4660 const struct format_ops coff_format_ops
=
4662 bfd_target_coff_flavour
,
4663 0, /* dfl_leading_underscore */
4664 1, /* emit_section_symbols */
4669 0, /* frob_file_before_adjust */
4670 coff_frob_file_after_relocs
,
4673 0, /* s_get_align */
4674 0, /* s_set_align */
4675 0, /* s_get_other */
4676 0, /* s_set_other */
4681 0, /* copy_symbol_attributes */
4682 0, /* generate_asm_lineno */
4683 0, /* process_stab */
4684 coff_separate_stab_sections
,
4685 obj_coff_init_stab_section
,
4686 0, /* sec_sym_ok_for_reloc */
4688 0, /* ecoff_set_ext */
4689 coff_obj_read_begin_hook
,
4690 coff_obj_symbol_new_hook