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source: trunk/binutils/gas/config/obj-coff.c@ 2562

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Last change on this file since 2562 was 610, checked in by bird, 22 years ago
This commit was generated by cvs2svn to compensate for changes in r609, which included commits to RCS files with non-trunk default branches.
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1	/* coff object file format
2	Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3	1999, 2000, 2001, 2002
4	Free Software Foundation, Inc.
5
6	This file is part of GAS.
7
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)
11	any later version.
12
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.
17
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
21	02111-1307, USA. */
22
23	#define OBJ_HEADER "obj-coff.h"
24
25	#include "as.h"
26	#include "obstack.h"
27	#include "subsegs.h"
28
29	/* I think this is probably always correct. */
30	#ifndef KEEP_RELOC_INFO
31	#define KEEP_RELOC_INFO
32	#endif
33
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)
39	#endif
40
41	/* This is used to hold the symbol built by a sequence of pseudo-ops
42	from .def and .endef. */
43	static symbolS *def_symbol_in_progress;
44
45	typedef struct
46	{
47	unsigned long chunk_size;
48	unsigned long element_size;
49	unsigned long size;
50	char *data;
51	unsigned long pointer;
52	}
53	stack;
54
55	static stack *stack_init PARAMS ((unsigned long, unsigned long));
56	static char stack_push PARAMS ((stack , char *));
57	static char stack_pop PARAMS ((stack ));
58	static void tag_init PARAMS ((void));
59	static void tag_insert PARAMS ((const char , symbolS ));
60	static symbolS tag_find PARAMS ((char ));
61	static symbolS tag_find_or_make PARAMS ((char ));
62	static void obj_coff_bss PARAMS ((int));
63	static void obj_coff_weak PARAMS ((int));
64	const char s_get_name PARAMS ((symbolS s));
65	static void obj_coff_ln PARAMS ((int));
66	static void obj_coff_def PARAMS ((int));
67	static void obj_coff_endef PARAMS ((int));
68	static void obj_coff_dim PARAMS ((int));
69	static void obj_coff_line PARAMS ((int));
70	static void obj_coff_size PARAMS ((int));
71	static void obj_coff_scl PARAMS ((int));
72	static void obj_coff_tag PARAMS ((int));
73	static void obj_coff_val PARAMS ((int));
74	static void obj_coff_type PARAMS ((int));
75	static void obj_coff_ident PARAMS ((int));
76	#ifdef BFD_ASSEMBLER
77	static void obj_coff_loc PARAMS((int));
78	#endif
79
80
81	/* stack stuff */
82
83	static stack *
84	stack_init (chunk_size, element_size)
85	unsigned long chunk_size;
86	unsigned long element_size;
87	{
88	stack *st;
89
90	st = (stack *) malloc (sizeof (stack));
91	if (!st)
92	return 0;
93	st->data = malloc (chunk_size);
94	if (!st->data)
95	{
96	free (st);
97	return 0;
98	}
99	st->pointer = 0;
100	st->size = chunk_size;
101	st->chunk_size = chunk_size;
102	st->element_size = element_size;
103	return st;
104	}
105
106	#if 0
107	/* Not currently used. */
108	static void
109	stack_delete (st)
110	stack *st;
111	{
112	free (st->data);
113	free (st);
114	}
115	#endif
116
117	static char *
118	stack_push (st, element)
119	stack *st;
120	char *element;
121	{
122	if (st->pointer + st->element_size >= st->size)
123	{
124	st->size += st->chunk_size;
125	if ((st->data = xrealloc (st->data, st->size)) == (char *) 0)
126	return (char *) 0;
127	}
128	memcpy (st->data + st->pointer, element, st->element_size);
129	st->pointer += st->element_size;
130	return st->data + st->pointer;
131	}
132
133	static char *
134	stack_pop (st)
135	stack *st;
136	{
137	if (st->pointer < st->element_size)
138	{
139	st->pointer = 0;
140	return (char *) 0;
141	}
142	st->pointer -= st->element_size;
143	return st->data + st->pointer;
144	}
145
146
147	/*
148	* Maintain a list of the tagnames of the structres.
149	*/
150
151	static struct hash_control *tag_hash;
152
153	static void
154	tag_init ()
155	{
156	tag_hash = hash_new ();
157	}
158
159	static void
160	tag_insert (name, symbolP)
161	const char *name;
162	symbolS *symbolP;
163	{
164	const char *error_string;
165
166	if ((error_string = hash_jam (tag_hash, name, (char *) symbolP)))
167	{
168	as_fatal (_("Inserting \"%s\" into structure table failed: %s"),
169	name, error_string);
170	}
171	}
172
173	static symbolS *
174	tag_find (name)
175	char *name;
176	{
177	#ifdef STRIP_UNDERSCORE
178	if (*name == '_')
179	name++;
180	#endif /* STRIP_UNDERSCORE */
181	return (symbolS *) hash_find (tag_hash, name);
182	}
183
184	static symbolS *
185	tag_find_or_make (name)
186	char *name;
187	{
188	symbolS *symbolP;
189
190	if ((symbolP = tag_find (name)) == NULL)
191	{
192	symbolP = symbol_new (name, undefined_section,
193	0, &zero_address_frag);
194
195	tag_insert (S_GET_NAME (symbolP), symbolP);
196	#ifdef BFD_ASSEMBLER
197	symbol_table_insert (symbolP);
198	#endif
199	} /* not found */
200
201	return symbolP;
202	}
203
204	/* We accept the .bss directive to set the section for backward
205	compatibility with earlier versions of gas. */
206
207	static void
208	obj_coff_bss (ignore)
209	int ignore ATTRIBUTE_UNUSED;
210	{
211	if (*input_line_pointer == '\n')
212	subseg_new (".bss", get_absolute_expression ());
213	else
214	s_lcomm (0);
215	}
216
217	/* Handle .weak. This is a GNU extension. */
218
219	static void
220	obj_coff_weak (ignore)
221	int ignore ATTRIBUTE_UNUSED;
222	{
223	char *name;
224	int c;
225	symbolS *symbolP;
226
227	do
228	{
229	name = input_line_pointer;
230	c = get_symbol_end ();
231	symbolP = symbol_find_or_make (name);
232	*input_line_pointer = c;
233	SKIP_WHITESPACE ();
234
235	#if defined BFD_ASSEMBLER \|\| defined S_SET_WEAK
236	S_SET_WEAK (symbolP);
237	#endif
238
239	#ifdef TE_PE
240	S_SET_STORAGE_CLASS (symbolP, C_NT_WEAK);
241	#else
242	S_SET_STORAGE_CLASS (symbolP, C_WEAKEXT);
243	#endif
244
245	if (c == ',')
246	{
247	input_line_pointer++;
248	SKIP_WHITESPACE ();
249	if (*input_line_pointer == '\n')
250	c = '\n';
251	}
252	}
253	while (c == ',');
254
255	demand_empty_rest_of_line ();
256	}
257
258	#ifdef BFD_ASSEMBLER
259
260	static segT fetch_coff_debug_section PARAMS ((void));
261	static void SA_SET_SYM_TAGNDX PARAMS ((symbolS , symbolS ));
262	static int S_GET_DATA_TYPE PARAMS ((symbolS *));
263	void c_symbol_merge PARAMS ((symbolS , symbolS ));
264	static void add_lineno PARAMS ((fragS *, addressT, int));
265
266	#define GET_FILENAME_STRING(X) \
267	((char*) (&((X)->sy_symbol.ost_auxent->x_file.x_n.x_offset))[1])
268
269	/* @@ Ick. */
270	static segT
271	fetch_coff_debug_section ()
272	{
273	static segT debug_section;
274	if (!debug_section)
275	{
276	const asymbol *s;
277	s = bfd_make_debug_symbol (stdoutput, (char *) 0, 0);
278	assert (s != 0);
279	debug_section = s->section;
280	}
281	return debug_section;
282	}
283
284	void
285	SA_SET_SYM_ENDNDX (sym, val)
286	symbolS *sym;
287	symbolS *val;
288	{
289	combined_entry_type entry, p;
290
291	entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1];
292	p = coffsymbol (symbol_get_bfdsym (val))->native;
293	entry->u.auxent.x_sym.x_fcnary.x_fcn.x_endndx.p = p;
294	entry->fix_end = 1;
295	}
296
297	static void
298	SA_SET_SYM_TAGNDX (sym, val)
299	symbolS *sym;
300	symbolS *val;
301	{
302	combined_entry_type entry, p;
303
304	entry = &coffsymbol (symbol_get_bfdsym (sym))->native[1];
305	p = coffsymbol (symbol_get_bfdsym (val))->native;
306	entry->u.auxent.x_sym.x_tagndx.p = p;
307	entry->fix_tag = 1;
308	}
309
310	static int
311	S_GET_DATA_TYPE (sym)
312	symbolS *sym;
313	{
314	return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type;
315	}
316
317	int
318	S_SET_DATA_TYPE (sym, val)
319	symbolS *sym;
320	int val;
321	{
322	coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_type = val;
323	return val;
324	}
325
326	int
327	S_GET_STORAGE_CLASS (sym)
328	symbolS *sym;
329	{
330	return coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass;
331	}
332
333	int
334	S_SET_STORAGE_CLASS (sym, val)
335	symbolS *sym;
336	int val;
337	{
338	coffsymbol (symbol_get_bfdsym (sym))->native->u.syment.n_sclass = val;
339	return val;
340	}
341
342	/* Merge a debug symbol containing debug information into a normal symbol. */
343
344	void
345	c_symbol_merge (debug, normal)
346	symbolS *debug;
347	symbolS *normal;
348	{
349	S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug));
350	S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug));
351
352	if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal))
353	{
354	/* take the most we have */
355	S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug));
356	}
357
358	if (S_GET_NUMBER_AUXILIARY (debug) > 0)
359	{
360	/* Move all the auxiliary information. */
361	memcpy (SYM_AUXINFO (normal), SYM_AUXINFO (debug),
362	(S_GET_NUMBER_AUXILIARY (debug)
363	* sizeof (*SYM_AUXINFO (debug))));
364	}
365
366	/* Move the debug flags. */
367	SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug));
368	}
369
370	void
371	c_dot_file_symbol (filename)
372	const char *filename;
373	{
374	symbolS *symbolP;
375
376	/* BFD converts filename to a .file symbol with an aux entry. It
377	also handles chaining. */
378	symbolP = symbol_new (filename, bfd_abs_section_ptr, 0, &zero_address_frag);
379
380	S_SET_STORAGE_CLASS (symbolP, C_FILE);
381	S_SET_NUMBER_AUXILIARY (symbolP, 1);
382
383	symbol_get_bfdsym (symbolP)->flags = BSF_DEBUGGING;
384
385	#ifndef NO_LISTING
386	{
387	extern int listing;
388	if (listing)
389	{
390	listing_source_file (filename);
391	}
392	}
393	#endif
394
395	/* Make sure that the symbol is first on the symbol chain */
396	if (symbol_rootP != symbolP)
397	{
398	symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
399	symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP);
400	} /* if not first on the list */
401	}
402
403	/* Line number handling */
404
405	struct line_no {
406	struct line_no *next;
407	fragS *frag;
408	alent l;
409	};
410
411	int coff_line_base;
412
413	/* Symbol of last function, which we should hang line#s off of. */
414	static symbolS *line_fsym;
415
416	#define in_function() (line_fsym != 0)
417	#define clear_function() (line_fsym = 0)
418	#define set_function(F) (line_fsym = (F), coff_add_linesym (F))
419
420
421
422	void
423	coff_obj_symbol_new_hook (symbolP)
424	symbolS *symbolP;
425	{
426	long sz = (OBJ_COFF_MAX_AUXENTRIES + 1) * sizeof (combined_entry_type);
427	char * s = (char *) xmalloc (sz);
428
429	memset (s, 0, sz);
430	coffsymbol (symbol_get_bfdsym (symbolP))->native = (combined_entry_type *) s;
431
432	S_SET_DATA_TYPE (symbolP, T_NULL);
433	S_SET_STORAGE_CLASS (symbolP, 0);
434	S_SET_NUMBER_AUXILIARY (symbolP, 0);
435
436	if (S_IS_STRING (symbolP))
437	SF_SET_STRING (symbolP);
438
439	if (S_IS_LOCAL (symbolP))
440	SF_SET_LOCAL (symbolP);
441	}
442
443
444
445	/*
446	* Handle .ln directives.
447	*/
448
449	static symbolS *current_lineno_sym;
450	static struct line_no *line_nos;
451	/* @@ Blindly assume all .ln directives will be in the .text section... */
452	int coff_n_line_nos;
453
454	static void
455	add_lineno (frag, offset, num)
456	fragS *frag;
457	addressT offset;
458	int num;
459	{
460	struct line_no *new_line =
461	(struct line_no *) xmalloc (sizeof (struct line_no));
462	if (!current_lineno_sym)
463	{
464	abort ();
465	}
466
467	#ifndef OBJ_XCOFF
468	/* The native aix assembler accepts negative line number */
469
470	if (num <= 0)
471	{
472	/* Zero is used as an end marker in the file. */
473	as_warn (_("Line numbers must be positive integers\n"));
474	num = 1;
475	}
476	#endif /* OBJ_XCOFF */
477	new_line->next = line_nos;
478	new_line->frag = frag;
479	new_line->l.line_number = num;
480	new_line->l.u.offset = offset;
481	line_nos = new_line;
482	coff_n_line_nos++;
483	}
484
485	void
486	coff_add_linesym (sym)
487	symbolS *sym;
488	{
489	if (line_nos)
490	{
491	coffsymbol (symbol_get_bfdsym (current_lineno_sym))->lineno =
492	(alent *) line_nos;
493	coff_n_line_nos++;
494	line_nos = 0;
495	}
496	current_lineno_sym = sym;
497	}
498
499	static void
500	obj_coff_ln (appline)
501	int appline;
502	{
503	int l;
504
505	if (! appline && def_symbol_in_progress != NULL)
506	{
507	as_warn (_(".ln pseudo-op inside .def/.endef: ignored."));
508	demand_empty_rest_of_line ();
509	return;
510	}
511
512	l = get_absolute_expression ();
513
514	/* If there is no lineno symbol, treat a .ln
515	directive as if it were a .appline directive. */
516	if (appline \|\| current_lineno_sym == NULL)
517	new_logical_line ((char *) NULL, l - 1);
518	else
519	add_lineno (frag_now, frag_now_fix (), l);
520
521	#ifndef NO_LISTING
522	{
523	extern int listing;
524
525	if (listing)
526	{
527	if (! appline)
528	l += coff_line_base - 1;
529	listing_source_line (l);
530	}
531	}
532	#endif
533
534	demand_empty_rest_of_line ();
535	}
536
537	/* .loc is essentially the same as .ln; parse it for assembler
538	compatibility. */
539
540	static void
541	obj_coff_loc (ignore)
542	int ignore ATTRIBUTE_UNUSED;
543	{
544	int lineno;
545
546	/* FIXME: Why do we need this check? We need it for ECOFF, but why
547	do we need it for COFF? */
548	if (now_seg != text_section)
549	{
550	as_warn (_(".loc outside of .text"));
551	demand_empty_rest_of_line ();
552	return;
553	}
554
555	if (def_symbol_in_progress != NULL)
556	{
557	as_warn (_(".loc pseudo-op inside .def/.endef: ignored."));
558	demand_empty_rest_of_line ();
559	return;
560	}
561
562	/* Skip the file number. */
563	SKIP_WHITESPACE ();
564	get_absolute_expression ();
565	SKIP_WHITESPACE ();
566
567	lineno = get_absolute_expression ();
568
569	#ifndef NO_LISTING
570	{
571	extern int listing;
572
573	if (listing)
574	{
575	lineno += coff_line_base - 1;
576	listing_source_line (lineno);
577	}
578	}
579	#endif
580
581	demand_empty_rest_of_line ();
582
583	add_lineno (frag_now, frag_now_fix (), lineno);
584	}
585
586	/* Handle the .ident pseudo-op. */
587
588	static void
589	obj_coff_ident (ignore)
590	int ignore ATTRIBUTE_UNUSED;
591	{
592	segT current_seg = now_seg;
593	subsegT current_subseg = now_subseg;
594
595	#ifdef TE_PE
596	{
597	segT sec;
598
599	/* We could put it in .comment, but that creates an extra section
600	that shouldn't be loaded into memory, which requires linker
601	changes... For now, until proven otherwise, use .rdata. */
602	sec = subseg_new (".rdata$zzz", 0);
603	bfd_set_section_flags (stdoutput, sec,
604	((SEC_ALLOC \| SEC_LOAD \| SEC_READONLY \| SEC_DATA)
605	& bfd_applicable_section_flags (stdoutput)));
606	}
607	#else
608	subseg_new (".comment", 0);
609	#endif
610
611	stringer (1);
612	subseg_set (current_seg, current_subseg);
613	}
614
615	/*
616	* def()
617	*
618	* Handle .def directives.
619	*
620	* One might ask : why can't we symbol_new if the symbol does not
621	* already exist and fill it with debug information. Because of
622	* the C_EFCN special symbol. It would clobber the value of the
623	* function symbol before we have a chance to notice that it is
624	* a C_EFCN. And a second reason is that the code is more clear this
625	* way. (at least I think it is :-).
626	*
627	*/
628
629	#define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';')
630	#define SKIP_WHITESPACES() while (*input_line_pointer == ' ' \|\| \
631	*input_line_pointer == '\t') \
632	input_line_pointer++;
633
634	static void
635	obj_coff_def (what)
636	int what ATTRIBUTE_UNUSED;
637	{
638	char name_end; /* Char after the end of name */
639	char symbol_name; / Name of the debug symbol */
640	char symbol_name_copy; / Temporary copy of the name */
641	unsigned int symbol_name_length;
642
643	if (def_symbol_in_progress != NULL)
644	{
645	as_warn (_(".def pseudo-op used inside of .def/.endef: ignored."));
646	demand_empty_rest_of_line ();
647	return;
648	} /* if not inside .def/.endef */
649
650	SKIP_WHITESPACES ();
651
652	symbol_name = input_line_pointer;
653	#ifdef STRIP_UNDERSCORE
654	if (symbol_name[0] == '_' && symbol_name[1] != 0)
655	symbol_name++;
656	#endif /* STRIP_UNDERSCORE */
657
658	name_end = get_symbol_end ();
659	symbol_name_length = strlen (symbol_name);
660	symbol_name_copy = xmalloc (symbol_name_length + 1);
661	strcpy (symbol_name_copy, symbol_name);
662	#ifdef tc_canonicalize_symbol_name
663	symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy);
664	#endif
665
666	/* Initialize the new symbol */
667	def_symbol_in_progress = symbol_make (symbol_name_copy);
668	symbol_set_frag (def_symbol_in_progress, &zero_address_frag);
669	S_SET_VALUE (def_symbol_in_progress, 0);
670
671	if (S_IS_STRING (def_symbol_in_progress))
672	SF_SET_STRING (def_symbol_in_progress);
673
674	*input_line_pointer = name_end;
675
676	demand_empty_rest_of_line ();
677	}
678
679	unsigned int dim_index;
680
681	static void
682	obj_coff_endef (ignore)
683	int ignore ATTRIBUTE_UNUSED;
684	{
685	symbolS *symbolP = NULL;
686
687	/* DIM BUG FIX sac@cygnus.com */
688	dim_index = 0;
689	if (def_symbol_in_progress == NULL)
690	{
691	as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored."));
692	demand_empty_rest_of_line ();
693	return;
694	} /* if not inside .def/.endef */
695
696	/* Set the section number according to storage class. */
697	switch (S_GET_STORAGE_CLASS (def_symbol_in_progress))
698	{
699	case C_STRTAG:
700	case C_ENTAG:
701	case C_UNTAG:
702	SF_SET_TAG (def_symbol_in_progress);
703	/* intentional fallthrough */
704	case C_FILE:
705	case C_TPDEF:
706	SF_SET_DEBUG (def_symbol_in_progress);
707	S_SET_SEGMENT (def_symbol_in_progress, fetch_coff_debug_section ());
708	break;
709
710	case C_EFCN:
711	SF_SET_LOCAL (def_symbol_in_progress); /* Do not emit this symbol. */
712	/* intentional fallthrough */
713	case C_BLOCK:
714	SF_SET_PROCESS (def_symbol_in_progress); /* Will need processing before writing */
715	/* intentional fallthrough */
716	case C_FCN:
717	{
718	const char *name;
719	S_SET_SEGMENT (def_symbol_in_progress, text_section);
720
721	name = S_GET_NAME (def_symbol_in_progress);
722	if (name[0] == '.' && name[2] == 'f' && name[3] == '\0')
723	{
724	switch (name[1])
725	{
726	case 'b':
727	/* .bf */
728	if (! in_function ())
729	as_warn (_("`%s' symbol without preceding function"), name);
730	/* Will need relocating. */
731	SF_SET_PROCESS (def_symbol_in_progress);
732	clear_function ();
733	break;
734	#ifdef TE_PE
735	case 'e':
736	/* .ef */
737	/* The MS compilers output the actual endline, not the
738	function-relative one... we want to match without
739	changing the assembler input. */
740	SA_SET_SYM_LNNO (def_symbol_in_progress,
741	(SA_GET_SYM_LNNO (def_symbol_in_progress)
742	+ coff_line_base));
743	break;
744	#endif
745	}
746	}
747	}
748	break;
749
750	#ifdef C_AUTOARG
751	case C_AUTOARG:
752	#endif /* C_AUTOARG */
753	case C_AUTO:
754	case C_REG:
755	case C_ARG:
756	case C_REGPARM:
757	case C_FIELD:
758
759	/* According to the COFF documentation:
760
761	http://osr5doc.sco.com:1996/topics/COFF_SectNumFld.html
762
763	A special section number (-2) marks symbolic debugging symbols,
764	including structure/union/enumeration tag names, typedefs, and
765	the name of the file. A section number of -1 indicates that the
766	symbol has a value but is not relocatable. Examples of
767	absolute-valued symbols include automatic and register variables,
768	function arguments, and .eos symbols.
769
770	But from Ian Lance Taylor:
771
772	http://sources.redhat.com/ml/binutils/2000-08/msg00202.html
773
774	the actual tools all marked them as section -1. So the GNU COFF
775	assembler follows historical COFF assemblers.
776
777	However, it causes problems for djgpp
778
779	http://sources.redhat.com/ml/binutils/2000-08/msg00210.html
780
781	By defining STRICTCOFF, a COFF port can make the assembler to
782	follow the documented behavior. */
783	#ifdef STRICTCOFF
784	case C_MOS:
785	case C_MOE:
786	case C_MOU:
787	case C_EOS:
788	#endif
789	SF_SET_DEBUG (def_symbol_in_progress);
790	S_SET_SEGMENT (def_symbol_in_progress, absolute_section);
791	break;
792
793	#ifndef STRICTCOFF
794	case C_MOS:
795	case C_MOE:
796	case C_MOU:
797	case C_EOS:
798	S_SET_SEGMENT (def_symbol_in_progress, absolute_section);
799	break;
800	#endif
801
802	case C_EXT:
803	case C_WEAKEXT:
804	#ifdef TE_PE
805	case C_NT_WEAK:
806	#endif
807	case C_STAT:
808	case C_LABEL:
809	/* Valid but set somewhere else (s_comm, s_lcomm, colon) */
810	break;
811
812	default:
813	case C_USTATIC:
814	case C_EXTDEF:
815	case C_ULABEL:
816	as_warn (_("unexpected storage class %d"),
817	S_GET_STORAGE_CLASS (def_symbol_in_progress));
818	break;
819	} /* switch on storage class */
820
821	/* Now that we have built a debug symbol, try to find if we should
822	merge with an existing symbol or not. If a symbol is C_EFCN or
823	absolute_section or untagged SEG_DEBUG it never merges. We also
824	don't merge labels, which are in a different namespace, nor
825	symbols which have not yet been defined since they are typically
826	unique, nor do we merge tags with non-tags. */
827
828	/* Two cases for functions. Either debug followed by definition or
829	definition followed by debug. For definition first, we will
830	merge the debug symbol into the definition. For debug first, the
831	lineno entry MUST point to the definition function or else it
832	will point off into space when obj_crawl_symbol_chain() merges
833	the debug symbol into the real symbol. Therefor, let's presume
834	the debug symbol is a real function reference. */
835
836	/* FIXME-SOON If for some reason the definition label/symbol is
837	never seen, this will probably leave an undefined symbol at link
838	time. */
839
840	if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN
841	\|\| S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL
842	\|\| (!strcmp (bfd_get_section_name (stdoutput,
843	S_GET_SEGMENT (def_symbol_in_progress)),
844	"DEBUG")
845	&& !SF_GET_TAG (def_symbol_in_progress))
846	\|\| S_GET_SEGMENT (def_symbol_in_progress) == absolute_section
847	\|\| ! symbol_constant_p (def_symbol_in_progress)
848	\|\| (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress),
849	DO_NOT_STRIP)) == NULL
850	\|\| SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP))
851	{
852	/* If it already is at the end of the symbol list, do nothing */
853	if (def_symbol_in_progress != symbol_lastP)
854	{
855	symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP);
856	symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP,
857	&symbol_lastP);
858	}
859	}
860	else
861	{
862	/* This symbol already exists, merge the newly created symbol
863	into the old one. This is not mandatory. The linker can
864	handle duplicate symbols correctly. But I guess that it save
865	a lot of space if the assembly file defines a lot of
866	symbols. [loic] */
867
868	/* The debug entry (def_symbol_in_progress) is merged into the
869	previous definition. */
870
871	c_symbol_merge (def_symbol_in_progress, symbolP);
872	symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP);
873
874	def_symbol_in_progress = symbolP;
875
876	if (SF_GET_FUNCTION (def_symbol_in_progress)
877	\|\| SF_GET_TAG (def_symbol_in_progress)
878	\|\| S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT)
879	{
880	/* For functions, and tags, and static symbols, the symbol
881	must be where the debug symbol appears. Move the
882	existing symbol to the current place. */
883	/* If it already is at the end of the symbol list, do nothing */
884	if (def_symbol_in_progress != symbol_lastP)
885	{
886	symbol_remove (def_symbol_in_progress, &symbol_rootP, &symbol_lastP);
887	symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP, &symbol_lastP);
888	}
889	}
890	}
891
892	if (SF_GET_TAG (def_symbol_in_progress))
893	{
894	symbolS *oldtag;
895
896	oldtag = symbol_find_base (S_GET_NAME (def_symbol_in_progress),
897	DO_NOT_STRIP);
898	if (oldtag == NULL \|\| ! SF_GET_TAG (oldtag))
899	tag_insert (S_GET_NAME (def_symbol_in_progress),
900	def_symbol_in_progress);
901	}
902
903	if (SF_GET_FUNCTION (def_symbol_in_progress))
904	{
905	know (sizeof (def_symbol_in_progress) <= sizeof (long));
906	set_function (def_symbol_in_progress);
907	SF_SET_PROCESS (def_symbol_in_progress);
908
909	if (symbolP == NULL)
910	{
911	/* That is, if this is the first time we've seen the
912	function... */
913	symbol_table_insert (def_symbol_in_progress);
914	} /* definition follows debug */
915	} /* Create the line number entry pointing to the function being defined */
916
917	def_symbol_in_progress = NULL;
918	demand_empty_rest_of_line ();
919	}
920
921	static void
922	obj_coff_dim (ignore)
923	int ignore ATTRIBUTE_UNUSED;
924	{
925	int dim_index;
926
927	if (def_symbol_in_progress == NULL)
928	{
929	as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored."));
930	demand_empty_rest_of_line ();
931	return;
932	} /* if not inside .def/.endef */
933
934	S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
935
936	for (dim_index = 0; dim_index < DIMNUM; dim_index++)
937	{
938	SKIP_WHITESPACES ();
939	SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index,
940	get_absolute_expression ());
941
942	switch (*input_line_pointer)
943	{
944	case ',':
945	input_line_pointer++;
946	break;
947
948	default:
949	as_warn (_("badly formed .dim directive ignored"));
950	/* intentional fallthrough */
951	case '\n':
952	case ';':
953	dim_index = DIMNUM;
954	break;
955	}
956	}
957
958	demand_empty_rest_of_line ();
959	}
960
961	static void
962	obj_coff_line (ignore)
963	int ignore ATTRIBUTE_UNUSED;
964	{
965	int this_base;
966
967	if (def_symbol_in_progress == NULL)
968	{
969	/* Probably stabs-style line? */
970	obj_coff_ln (0);
971	return;
972	}
973
974	this_base = get_absolute_expression ();
975	if (!strcmp (".bf", S_GET_NAME (def_symbol_in_progress)))
976	coff_line_base = this_base;
977
978	S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
979	SA_SET_SYM_LNNO (def_symbol_in_progress, this_base);
980
981	demand_empty_rest_of_line ();
982
983	#ifndef NO_LISTING
984	if (strcmp (".bf", S_GET_NAME (def_symbol_in_progress)) == 0)
985	{
986	extern int listing;
987
988	if (listing)
989	listing_source_line ((unsigned int) this_base);
990	}
991	#endif
992	}
993
994	static void
995	obj_coff_size (ignore)
996	int ignore ATTRIBUTE_UNUSED;
997	{
998	if (def_symbol_in_progress == NULL)
999	{
1000	as_warn (_(".size pseudo-op used outside of .def/.endef ignored."));
1001	demand_empty_rest_of_line ();
1002	return;
1003	} /* if not inside .def/.endef */
1004
1005	S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
1006	SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ());
1007	demand_empty_rest_of_line ();
1008	}
1009
1010	static void
1011	obj_coff_scl (ignore)
1012	int ignore ATTRIBUTE_UNUSED;
1013	{
1014	if (def_symbol_in_progress == NULL)
1015	{
1016	as_warn (_(".scl pseudo-op used outside of .def/.endef ignored."));
1017	demand_empty_rest_of_line ();
1018	return;
1019	} /* if not inside .def/.endef */
1020
1021	S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ());
1022	demand_empty_rest_of_line ();
1023	}
1024
1025	static void
1026	obj_coff_tag (ignore)
1027	int ignore ATTRIBUTE_UNUSED;
1028	{
1029	char *symbol_name;
1030	char name_end;
1031
1032	if (def_symbol_in_progress == NULL)
1033	{
1034	as_warn (_(".tag pseudo-op used outside of .def/.endef ignored."));
1035	demand_empty_rest_of_line ();
1036	return;
1037	}
1038
1039	S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
1040	symbol_name = input_line_pointer;
1041	name_end = get_symbol_end ();
1042
1043	#ifdef tc_canonicalize_symbol_name
1044	symbol_name = tc_canonicalize_symbol_name (symbol_name);
1045	#endif
1046
1047	/* Assume that the symbol referred to by .tag is always defined.
1048	This was a bad assumption. I've added find_or_make. xoxorich. */
1049	SA_SET_SYM_TAGNDX (def_symbol_in_progress,
1050	tag_find_or_make (symbol_name));
1051	if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L)
1052	{
1053	as_warn (_("tag not found for .tag %s"), symbol_name);
1054	} /* not defined */
1055
1056	SF_SET_TAGGED (def_symbol_in_progress);
1057	*input_line_pointer = name_end;
1058
1059	demand_empty_rest_of_line ();
1060	}
1061
1062	static void
1063	obj_coff_type (ignore)
1064	int ignore ATTRIBUTE_UNUSED;
1065	{
1066	if (def_symbol_in_progress == NULL)
1067	{
1068	as_warn (_(".type pseudo-op used outside of .def/.endef ignored."));
1069	demand_empty_rest_of_line ();
1070	return;
1071	} /* if not inside .def/.endef */
1072
1073	S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ());
1074
1075	if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) &&
1076	S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF)
1077	{
1078	SF_SET_FUNCTION (def_symbol_in_progress);
1079	} /* is a function */
1080
1081	demand_empty_rest_of_line ();
1082	}
1083
1084	static void
1085	obj_coff_val (ignore)
1086	int ignore ATTRIBUTE_UNUSED;
1087	{
1088	if (def_symbol_in_progress == NULL)
1089	{
1090	as_warn (_(".val pseudo-op used outside of .def/.endef ignored."));
1091	demand_empty_rest_of_line ();
1092	return;
1093	} /* if not inside .def/.endef */
1094
1095	if (is_name_beginner (*input_line_pointer))
1096	{
1097	char *symbol_name = input_line_pointer;
1098	char name_end = get_symbol_end ();
1099
1100	#ifdef tc_canonicalize_symbol_name
1101	symbol_name = tc_canonicalize_symbol_name (symbol_name);
1102	#endif
1103	if (!strcmp (symbol_name, "."))
1104	{
1105	symbol_set_frag (def_symbol_in_progress, frag_now);
1106	S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
1107	/* If the .val is != from the .def (e.g. statics) */
1108	}
1109	else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name))
1110	{
1111	expressionS exp;
1112
1113	exp.X_op = O_symbol;
1114	exp.X_add_symbol = symbol_find_or_make (symbol_name);
1115	exp.X_op_symbol = NULL;
1116	exp.X_add_number = 0;
1117	symbol_set_value_expression (def_symbol_in_progress, &exp);
1118
1119	/* If the segment is undefined when the forward reference is
1120	resolved, then copy the segment id from the forward
1121	symbol. */
1122	SF_SET_GET_SEGMENT (def_symbol_in_progress);
1123
1124	/* FIXME: gcc can generate address expressions here in
1125	unusual cases (search for "obscure" in sdbout.c). We
1126	just ignore the offset here, thus generating incorrect
1127	debugging information. We ignore the rest of the line
1128	just below. */
1129	}
1130	/* Otherwise, it is the name of a non debug symbol and its value
1131	will be calculated later. */
1132	*input_line_pointer = name_end;
1133	}
1134	else
1135	{
1136	S_SET_VALUE (def_symbol_in_progress, get_absolute_expression ());
1137	} /* if symbol based */
1138
1139	demand_empty_rest_of_line ();
1140	}
1141
1142	void
1143	coff_obj_read_begin_hook ()
1144	{
1145	/* These had better be the same. Usually 18 bytes. */
1146	#ifndef BFD_HEADERS
1147	know (sizeof (SYMENT) == sizeof (AUXENT));
1148	know (SYMESZ == AUXESZ);
1149	#endif
1150	tag_init ();
1151	}
1152
1153	symbolS *coff_last_function;
1154	#ifndef OBJ_XCOFF
1155	static symbolS *coff_last_bf;
1156	#endif
1157
1158	void
1159	coff_frob_symbol (symp, punt)
1160	symbolS *symp;
1161	int *punt;
1162	{
1163	static symbolS *last_tagP;
1164	static stack *block_stack;
1165	static symbolS *set_end;
1166	symbolS *next_set_end = NULL;
1167
1168	if (symp == &abs_symbol)
1169	{
1170	*punt = 1;
1171	return;
1172	}
1173
1174	if (current_lineno_sym)
1175	coff_add_linesym ((symbolS *) 0);
1176
1177	if (!block_stack)
1178	block_stack = stack_init (512, sizeof (symbolS*));
1179
1180	if (S_IS_WEAK (symp))
1181	{
1182	#ifdef TE_PE
1183	S_SET_STORAGE_CLASS (symp, C_NT_WEAK);
1184	#else
1185	S_SET_STORAGE_CLASS (symp, C_WEAKEXT);
1186	#endif
1187	}
1188
1189	if (!S_IS_DEFINED (symp)
1190	&& !S_IS_WEAK (symp)
1191	&& S_GET_STORAGE_CLASS (symp) != C_STAT)
1192	S_SET_STORAGE_CLASS (symp, C_EXT);
1193
1194	if (!SF_GET_DEBUG (symp))
1195	{
1196	symbolS * real;
1197
1198	if (!SF_GET_LOCAL (symp)
1199	&& !SF_GET_STATICS (symp)
1200	&& S_GET_STORAGE_CLASS (symp) != C_LABEL
1201	&& symbol_constant_p(symp)
1202	&& (real = symbol_find_base (S_GET_NAME (symp), DO_NOT_STRIP))
1203	&& S_GET_STORAGE_CLASS (real) == C_NULL
1204	&& real != symp)
1205	{
1206	c_symbol_merge (symp, real);
1207	*punt = 1;
1208	return;
1209	}
1210
1211	if (!S_IS_DEFINED (symp) && !SF_GET_LOCAL (symp))
1212	{
1213	assert (S_GET_VALUE (symp) == 0);
1214	S_SET_EXTERNAL (symp);
1215	}
1216	else if (S_GET_STORAGE_CLASS (symp) == C_NULL)
1217	{
1218	if (S_GET_SEGMENT (symp) == text_section
1219	&& symp != seg_info (text_section)->sym)
1220	S_SET_STORAGE_CLASS (symp, C_LABEL);
1221	else
1222	S_SET_STORAGE_CLASS (symp, C_STAT);
1223	}
1224
1225	if (SF_GET_PROCESS (symp))
1226	{
1227	if (S_GET_STORAGE_CLASS (symp) == C_BLOCK)
1228	{
1229	if (!strcmp (S_GET_NAME (symp), ".bb"))
1230	stack_push (block_stack, (char *) &symp);
1231	else
1232	{
1233	symbolS *begin;
1234
1235	begin = (symbolS *) stack_pop (block_stack);
1236	if (begin == 0)
1237	as_warn (_("mismatched .eb"));
1238	else
1239	next_set_end = begin;
1240	}
1241	}
1242
1243	if (coff_last_function == 0 && SF_GET_FUNCTION (symp))
1244	{
1245	union internal_auxent *auxp;
1246
1247	coff_last_function = symp;
1248	if (S_GET_NUMBER_AUXILIARY (symp) < 1)
1249	S_SET_NUMBER_AUXILIARY (symp, 1);
1250	auxp = SYM_AUXENT (symp);
1251	memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0,
1252	sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen));
1253	}
1254
1255	if (S_GET_STORAGE_CLASS (symp) == C_EFCN)
1256	{
1257	if (coff_last_function == 0)
1258	as_fatal (_("C_EFCN symbol out of scope"));
1259	SA_SET_SYM_FSIZE (coff_last_function,
1260	(long) (S_GET_VALUE (symp)
1261	- S_GET_VALUE (coff_last_function)));
1262	next_set_end = coff_last_function;
1263	coff_last_function = 0;
1264	}
1265	}
1266
1267	if (S_IS_EXTERNAL (symp))
1268	S_SET_STORAGE_CLASS (symp, C_EXT);
1269	else if (SF_GET_LOCAL (symp))
1270	*punt = 1;
1271
1272	if (SF_GET_FUNCTION (symp))
1273	symbol_get_bfdsym (symp)->flags \|= BSF_FUNCTION;
1274
1275	/* more ... */
1276	}
1277
1278	/* Double check weak symbols. */
1279	if (S_IS_WEAK (symp) && S_IS_COMMON (symp))
1280	as_bad (_("Symbol `%s' can not be both weak and common"),
1281	S_GET_NAME (symp));
1282
1283	if (SF_GET_TAG (symp))
1284	last_tagP = symp;
1285	else if (S_GET_STORAGE_CLASS (symp) == C_EOS)
1286	next_set_end = last_tagP;
1287
1288	#ifdef OBJ_XCOFF
1289	/* This is pretty horrible, but we have to set *punt correctly in
1290	order to call SA_SET_SYM_ENDNDX correctly. */
1291	if (! symbol_used_in_reloc_p (symp)
1292	&& ((symbol_get_bfdsym (symp)->flags & BSF_SECTION_SYM) != 0
1293	\|\| (! S_IS_EXTERNAL (symp)
1294	&& ! symbol_get_tc (symp)->output
1295	&& S_GET_STORAGE_CLASS (symp) != C_FILE)))
1296	*punt = 1;
1297	#endif
1298
1299	if (set_end != (symbolS *) NULL
1300	&& ! *punt
1301	&& ((symbol_get_bfdsym (symp)->flags & BSF_NOT_AT_END) != 0
1302	\|\| (S_IS_DEFINED (symp)
1303	&& ! S_IS_COMMON (symp)
1304	&& (! S_IS_EXTERNAL (symp) \|\| SF_GET_FUNCTION (symp)))))
1305	{
1306	SA_SET_SYM_ENDNDX (set_end, symp);
1307	set_end = NULL;
1308	}
1309
1310	if (next_set_end != NULL)
1311	{
1312	if (set_end != NULL)
1313	as_warn ("Warning: internal error: forgetting to set endndx of %s",
1314	S_GET_NAME (set_end));
1315	set_end = next_set_end;
1316	}
1317
1318	#ifndef OBJ_XCOFF
1319	if (! *punt
1320	&& S_GET_STORAGE_CLASS (symp) == C_FCN
1321	&& strcmp (S_GET_NAME (symp), ".bf") == 0)
1322	{
1323	if (coff_last_bf != NULL)
1324	SA_SET_SYM_ENDNDX (coff_last_bf, symp);
1325	coff_last_bf = symp;
1326	}
1327	#endif
1328	if (coffsymbol (symbol_get_bfdsym (symp))->lineno)
1329	{
1330	int i;
1331	struct line_no *lptr;
1332	alent *l;
1333
1334	lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno;
1335	for (i = 0; lptr; lptr = lptr->next)
1336	i++;
1337	lptr = (struct line_no *) coffsymbol (symbol_get_bfdsym (symp))->lineno;
1338
1339	/* We need i entries for line numbers, plus 1 for the first
1340	entry which BFD will override, plus 1 for the last zero
1341	entry (a marker for BFD). */
1342	l = (alent ) xmalloc ((i + 2) sizeof (alent));
1343	coffsymbol (symbol_get_bfdsym (symp))->lineno = l;
1344	l[i + 1].line_number = 0;
1345	l[i + 1].u.sym = NULL;
1346	for (; i > 0; i--)
1347	{
1348	if (lptr->frag)
1349	lptr->l.u.offset += lptr->frag->fr_address / OCTETS_PER_BYTE;
1350	l[i] = lptr->l;
1351	lptr = lptr->next;
1352	}
1353	}
1354	}
1355
1356	void
1357	coff_adjust_section_syms (abfd, sec, x)
1358	bfd *abfd ATTRIBUTE_UNUSED;
1359	asection *sec;
1360	PTR x ATTRIBUTE_UNUSED;
1361	{
1362	symbolS *secsym;
1363	segment_info_type *seginfo = seg_info (sec);
1364	int nlnno, nrelocs = 0;
1365
1366	/* RS/6000 gas creates a .debug section manually in ppc_frob_file in
1367	tc-ppc.c. Do not get confused by it. */
1368	if (seginfo == NULL)
1369	return;
1370
1371	if (!strcmp (sec->name, ".text"))
1372	nlnno = coff_n_line_nos;
1373	else
1374	nlnno = 0;
1375	{
1376	/* @@ Hope that none of the fixups expand to more than one reloc
1377	entry... */
1378	fixS *fixp = seginfo->fix_root;
1379	while (fixp)
1380	{
1381	if (! fixp->fx_done)
1382	nrelocs++;
1383	fixp = fixp->fx_next;
1384	}
1385	}
1386	if (bfd_get_section_size_before_reloc (sec) == 0
1387	&& nrelocs == 0
1388	&& nlnno == 0
1389	&& sec != text_section
1390	&& sec != data_section
1391	&& sec != bss_section)
1392	return;
1393	secsym = section_symbol (sec);
1394	/* This is an estimate; we'll plug in the real value using
1395	SET_SECTION_RELOCS later */
1396	SA_SET_SCN_NRELOC (secsym, nrelocs);
1397	SA_SET_SCN_NLINNO (secsym, nlnno);
1398	}
1399
1400	void
1401	coff_frob_file_after_relocs ()
1402	{
1403	bfd_map_over_sections (stdoutput, coff_adjust_section_syms, (char*) 0);
1404	}
1405
1406	/* Implement the .section pseudo op:
1407	.section name {, "flags"}
1408	^ ^
1409	\| +--- optional flags: 'b' for bss
1410	\| 'i' for info
1411	+-- section name 'l' for lib
1412	'n' for noload
1413	'o' for over
1414	'w' for data
1415	'd' (apparently m88k for data)
1416	'x' for text
1417	'r' for read-only data
1418	's' for shared data (PE)
1419	But if the argument is not a quoted string, treat it as a
1420	subsegment number.
1421
1422	Note the 'a' flag is silently ignored. This allows the same
1423	.section directive to be parsed in both ELF and COFF formats. */
1424
1425	void
1426	obj_coff_section (ignore)
1427	int ignore ATTRIBUTE_UNUSED;
1428	{
1429	/* Strip out the section name */
1430	char *section_name;
1431	char c;
1432	char *name;
1433	unsigned int exp;
1434	flagword flags, oldflags;
1435	asection *sec;
1436
1437	if (flag_mri)
1438	{
1439	char type;
1440
1441	s_mri_sect (&type);
1442	return;
1443	}
1444
1445	section_name = input_line_pointer;
1446	c = get_symbol_end ();
1447
1448	name = xmalloc (input_line_pointer - section_name + 1);
1449	strcpy (name, section_name);
1450
1451	*input_line_pointer = c;
1452
1453	SKIP_WHITESPACE ();
1454
1455	exp = 0;
1456	flags = SEC_NO_FLAGS;
1457
1458	if (*input_line_pointer == ',')
1459	{
1460	++input_line_pointer;
1461	SKIP_WHITESPACE ();
1462	if (*input_line_pointer != '"')
1463	exp = get_absolute_expression ();
1464	else
1465	{
1466	++input_line_pointer;
1467	while (*input_line_pointer != '"'
1468	&& ! is_end_of_line[(unsigned char) *input_line_pointer])
1469	{
1470	switch (*input_line_pointer)
1471	{
1472	case 'b': flags \|= SEC_ALLOC; flags &=~ SEC_LOAD; break;
1473	case 'n': flags &=~ SEC_LOAD; flags \|= SEC_NEVER_LOAD; break;
1474
1475	case 's': flags \|= SEC_SHARED; /* fall through */
1476	case 'd': flags \|= SEC_DATA \| SEC_LOAD; /* fall through */
1477	case 'w': flags &=~ SEC_READONLY; break;
1478
1479	case 'a': break; /* For compatability with ELF. */
1480	case 'x': flags \|= SEC_CODE \| SEC_LOAD; break;
1481	case 'r': flags \|= SEC_READONLY; break;
1482
1483	case 'i': /* STYP_INFO */
1484	case 'l': /* STYP_LIB */
1485	case 'o': /* STYP_OVER */
1486	as_warn (_("unsupported section attribute '%c'"),
1487	*input_line_pointer);
1488	break;
1489
1490	default:
1491	as_warn(_("unknown section attribute '%c'"),
1492	*input_line_pointer);
1493	break;
1494	}
1495	++input_line_pointer;
1496	}
1497	if (*input_line_pointer == '"')
1498	++input_line_pointer;
1499	}
1500	}
1501
1502	sec = subseg_new (name, (subsegT) exp);
1503
1504	oldflags = bfd_get_section_flags (stdoutput, sec);
1505	if (oldflags == SEC_NO_FLAGS)
1506	{
1507	/* Set section flags for a new section just created by subseg_new.
1508	Provide a default if no flags were parsed. */
1509	if (flags == SEC_NO_FLAGS)
1510	flags = TC_COFF_SECTION_DEFAULT_ATTRIBUTES;
1511
1512	#ifdef COFF_LONG_SECTION_NAMES
1513	/* Add SEC_LINK_ONCE and SEC_LINK_DUPLICATES_DISCARD to .gnu.linkonce
1514	sections so adjust_reloc_syms in write.c will correctly handle
1515	relocs which refer to non-local symbols in these sections. */
1516	if (strncmp (name, ".gnu.linkonce", sizeof (".gnu.linkonce") - 1) == 0)
1517	flags \|= SEC_LINK_ONCE \| SEC_LINK_DUPLICATES_DISCARD;
1518	#endif
1519
1520	if (! bfd_set_section_flags (stdoutput, sec, flags))
1521	as_warn (_("error setting flags for \"%s\": %s"),
1522	bfd_section_name (stdoutput, sec),
1523	bfd_errmsg (bfd_get_error ()));
1524	}
1525	else if (flags != SEC_NO_FLAGS)
1526	{
1527	/* This section's attributes have already been set. Warn if the
1528	attributes don't match. */
1529	flagword matchflags = (SEC_ALLOC \| SEC_LOAD \| SEC_READONLY \| SEC_CODE
1530	\| SEC_DATA \| SEC_SHARED \| SEC_NEVER_LOAD);
1531	if ((flags ^ oldflags) & matchflags)
1532	as_warn (_("Ignoring changed section attributes for %s"), name);
1533	}
1534
1535	demand_empty_rest_of_line ();
1536	}
1537
1538	void
1539	coff_adjust_symtab ()
1540	{
1541	if (symbol_rootP == NULL
1542	\|\| S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE)
1543	c_dot_file_symbol ("fake");
1544	}
1545
1546	void
1547	coff_frob_section (sec)
1548	segT sec;
1549	{
1550	segT strsec;
1551	char *p;
1552	fragS *fragp;
1553	bfd_vma size, n_entries, mask;
1554	bfd_vma align_power = (bfd_vma)sec->alignment_power + OCTETS_PER_BYTE_POWER;
1555
1556	/* The COFF back end in BFD requires that all section sizes be
1557	rounded up to multiples of the corresponding section alignments,
1558	supposedly because standard COFF has no other way of encoding alignment
1559	for sections. If your COFF flavor has a different way of encoding
1560	section alignment, then skip this step, as TICOFF does. */
1561	size = bfd_get_section_size_before_reloc (sec);
1562	mask = ((bfd_vma) 1 << align_power) - 1;
1563	#if !defined(TICOFF)
1564	if (size & mask)
1565	{
1566	bfd_vma new_size;
1567	fragS *last;
1568
1569	new_size = (size + mask) & ~mask;
1570	bfd_set_section_size (stdoutput, sec, new_size);
1571
1572	/* If the size had to be rounded up, add some padding in
1573	the last non-empty frag. */
1574	fragp = seg_info (sec)->frchainP->frch_root;
1575	last = seg_info (sec)->frchainP->frch_last;
1576	while (fragp->fr_next != last)
1577	fragp = fragp->fr_next;
1578	last->fr_address = size;
1579	fragp->fr_offset += new_size - size;
1580	}
1581	#endif
1582
1583	/* If the section size is non-zero, the section symbol needs an aux
1584	entry associated with it, indicating the size. We don't know
1585	all the values yet; coff_frob_symbol will fill them in later. */
1586	#ifndef TICOFF
1587	if (size != 0
1588	\|\| sec == text_section
1589	\|\| sec == data_section
1590	\|\| sec == bss_section)
1591	#endif
1592	{
1593	symbolS *secsym = section_symbol (sec);
1594
1595	S_SET_STORAGE_CLASS (secsym, C_STAT);
1596	S_SET_NUMBER_AUXILIARY (secsym, 1);
1597	SF_SET_STATICS (secsym);
1598	SA_SET_SCN_SCNLEN (secsym, size);
1599	}
1600
1601	/* @@ these should be in a "stabs.h" file, or maybe as.h */
1602	#ifndef STAB_SECTION_NAME
1603	#define STAB_SECTION_NAME ".stab"
1604	#endif
1605	#ifndef STAB_STRING_SECTION_NAME
1606	#define STAB_STRING_SECTION_NAME ".stabstr"
1607	#endif
1608	if (strcmp (STAB_STRING_SECTION_NAME, sec->name))
1609	return;
1610
1611	strsec = sec;
1612	sec = subseg_get (STAB_SECTION_NAME, 0);
1613	/* size is already rounded up, since other section will be listed first */
1614	size = bfd_get_section_size_before_reloc (strsec);
1615
1616	n_entries = bfd_get_section_size_before_reloc (sec) / 12 - 1;
1617
1618	/* Find first non-empty frag. It should be large enough. */
1619	fragp = seg_info (sec)->frchainP->frch_root;
1620	while (fragp && fragp->fr_fix == 0)
1621	fragp = fragp->fr_next;
1622	assert (fragp != 0 && fragp->fr_fix >= 12);
1623
1624	/* Store the values. */
1625	p = fragp->fr_literal;
1626	bfd_h_put_16 (stdoutput, n_entries, (bfd_byte *) p + 6);
1627	bfd_h_put_32 (stdoutput, size, (bfd_byte *) p + 8);
1628	}
1629
1630	void
1631	obj_coff_init_stab_section (seg)
1632	segT seg;
1633	{
1634	char *file;
1635	char *p;
1636	char *stabstr_name;
1637	unsigned int stroff;
1638
1639	/* Make space for this first symbol. */
1640	p = frag_more (12);
1641	/* Zero it out. */
1642	memset (p, 0, 12);
1643	as_where (&file, (unsigned int *) NULL);
1644	stabstr_name = (char *) xmalloc (strlen (seg->name) + 4);
1645	strcpy (stabstr_name, seg->name);
1646	strcat (stabstr_name, "str");
1647	stroff = get_stab_string_offset (file, stabstr_name);
1648	know (stroff == 1);
1649	md_number_to_chars (p, stroff, 4);
1650	}
1651
1652	#ifdef DEBUG
1653	/* for debugging */
1654	const char *
1655	s_get_name (s)
1656	symbolS *s;
1657	{
1658	return ((s == NULL) ? "(NULL)" : S_GET_NAME (s));
1659	}
1660
1661	void
1662	symbol_dump ()
1663	{
1664	symbolS *symbolP;
1665
1666	for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
1667	{
1668	printf (_("0x%lx: \"%s\" type = %ld, class = %d, segment = %d\n"),
1669	(unsigned long) symbolP,
1670	S_GET_NAME(symbolP),
1671	(long) S_GET_DATA_TYPE(symbolP),
1672	S_GET_STORAGE_CLASS(symbolP),
1673	(int) S_GET_SEGMENT(symbolP));
1674	}
1675	}
1676
1677	#endif /* DEBUG */
1678
1679	#else /* not BFD_ASSEMBLER */
1680
1681	#include "frags.h"
1682	/* This is needed because we include internal bfd things. */
1683	#include <time.h>
1684
1685	#include "libbfd.h"
1686	#include "libcoff.h"
1687
1688	#ifdef TE_PE
1689	#include "coff/pe.h"
1690	#endif
1691
1692	/* The NOP_OPCODE is for the alignment fill value. Fill with nop so
1693	that we can stick sections together without causing trouble. */
1694	#ifndef NOP_OPCODE
1695	#define NOP_OPCODE 0x00
1696	#endif
1697
1698	/* The zeroes if symbol name is longer than 8 chars */
1699	#define S_SET_ZEROES(s,v) ((s)->sy_symbol.ost_entry.n_zeroes = (v))
1700
1701	#define MIN(a,b) ((a) < (b)? (a) : (b))
1702
1703	/* This vector is used to turn a gas internal segment number into a
1704	section number suitable for insertion into a coff symbol table.
1705	This must correspond to seg_info_off_by_4. */
1706
1707	const short seg_N_TYPE[] =
1708	{ /* in: segT out: N_TYPE bits */
1709	C_ABS_SECTION,
1710	1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
1711	11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
1712	21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
1713	31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
1714	C_UNDEF_SECTION, /* SEG_UNKNOWN */
1715	C_UNDEF_SECTION, /* SEG_GOOF */
1716	C_UNDEF_SECTION, /* SEG_EXPR */
1717	C_DEBUG_SECTION, /* SEG_DEBUG */
1718	C_NTV_SECTION, /* SEG_NTV */
1719	C_PTV_SECTION, /* SEG_PTV */
1720	C_REGISTER_SECTION, /* SEG_REGISTER */
1721	};
1722
1723	int function_lineoff = -1; /* Offset in line#s where the last function
1724	started (the odd entry for line #0) */
1725
1726	/* Structure used to keep the filenames which
1727	are too long around so that we can stick them
1728	into the string table. */
1729	struct filename_list
1730	{
1731	char *filename;
1732	struct filename_list *next;
1733	};
1734
1735	static struct filename_list *filename_list_head;
1736	static struct filename_list *filename_list_tail;
1737
1738	static symbolS *last_line_symbol;
1739
1740	/* Add 4 to the real value to get the index and compensate the
1741	negatives. This vector is used by S_GET_SEGMENT to turn a coff
1742	section number into a segment number. */
1743
1744	bfd *abfd;
1745	static symbolS *previous_file_symbol;
1746	static int line_base;
1747
1748	void c_symbol_merge PARAMS ((symbolS , symbolS ));
1749	symbolS c_section_symbol PARAMS ((char , int));
1750	void obj_coff_section PARAMS ((int));
1751	void do_relocs_for PARAMS ((bfd , object_headers , unsigned long *));
1752	char * symbol_to_chars PARAMS ((bfd , char , symbolS *));
1753	void w_strings PARAMS ((char *));
1754
1755	static void fixup_segment PARAMS ((segment_info_type *, segT));
1756	static void fixup_mdeps PARAMS ((fragS , object_headers , segT));
1757	static void fill_section PARAMS ((bfd , object_headers , unsigned long *));
1758	static int c_line_new PARAMS ((symbolS , long, int, fragS ));
1759	static void w_symbols PARAMS ((bfd , char , symbolS *));
1760	static void adjust_stab_section PARAMS ((bfd *, segT));
1761	static void obj_coff_lcomm PARAMS ((int));
1762	static void obj_coff_text PARAMS ((int));
1763	static void obj_coff_data PARAMS ((int));
1764	static unsigned int count_entries_in_chain PARAMS ((unsigned int));
1765	static void coff_header_append PARAMS ((bfd , object_headers ));
1766	static unsigned int yank_symbols PARAMS ((void));
1767	static unsigned int glue_symbols PARAMS ((symbolS , symbolS ));
1768	static unsigned int tie_tags PARAMS ((void));
1769	static void crawl_symbols PARAMS ((object_headers , bfd ));
1770	static void do_linenos_for PARAMS ((bfd , object_headers , unsigned long *));
1771	static void remove_subsegs PARAMS ((void));
1772
1773
1774
1775	/* When not using BFD_ASSEMBLER, we permit up to 40 sections.
1776
1777	This array maps a COFF section number into a gas section number.
1778	Because COFF uses negative section numbers, you must add 4 to the
1779	COFF section number when indexing into this array; this is done via
1780	the SEG_INFO_FROM_SECTION_NUMBER macro. This must correspond to
1781	seg_N_TYPE. */
1782
1783	static const segT seg_info_off_by_4[] =
1784	{
1785	SEG_PTV,
1786	SEG_NTV,
1787	SEG_DEBUG,
1788	SEG_ABSOLUTE,
1789	SEG_UNKNOWN,
1790	SEG_E0, SEG_E1, SEG_E2, SEG_E3, SEG_E4,
1791	SEG_E5, SEG_E6, SEG_E7, SEG_E8, SEG_E9,
1792	SEG_E10, SEG_E11, SEG_E12, SEG_E13, SEG_E14,
1793	SEG_E15, SEG_E16, SEG_E17, SEG_E18, SEG_E19,
1794	SEG_E20, SEG_E21, SEG_E22, SEG_E23, SEG_E24,
1795	SEG_E25, SEG_E26, SEG_E27, SEG_E28, SEG_E29,
1796	SEG_E30, SEG_E31, SEG_E32, SEG_E33, SEG_E34,
1797	SEG_E35, SEG_E36, SEG_E37, SEG_E38, SEG_E39,
1798	(segT) 40,
1799	(segT) 41,
1800	(segT) 42,
1801	(segT) 43,
1802	(segT) 44,
1803	(segT) 45,
1804	(segT) 0,
1805	(segT) 0,
1806	(segT) 0,
1807	SEG_REGISTER
1808	};
1809
1810	#define SEG_INFO_FROM_SECTION_NUMBER(x) (seg_info_off_by_4[(x)+4])
1811
1812	static relax_addressT relax_align PARAMS ((relax_addressT, long));
1813
1814	static relax_addressT
1815	relax_align (address, alignment)
1816	relax_addressT address;
1817	long alignment;
1818	{
1819	relax_addressT mask;
1820	relax_addressT new_address;
1821
1822	mask = ~((~0) << alignment);
1823	new_address = (address + mask) & (~mask);
1824	return (new_address - address);
1825	}
1826
1827	segT
1828	s_get_segment (x)
1829	symbolS * x;
1830	{
1831	return SEG_INFO_FROM_SECTION_NUMBER (x->sy_symbol.ost_entry.n_scnum);
1832	}
1833
1834	static unsigned int size_section PARAMS ((bfd *, unsigned int));
1835
1836	/* Calculate the size of the frag chain and fill in the section header
1837	to contain all of it, also fill in the addr of the sections. */
1838
1839	static unsigned int
1840	size_section (abfd, idx)
1841	bfd *abfd ATTRIBUTE_UNUSED;
1842	unsigned int idx;
1843	{
1844
1845	unsigned int size = 0;
1846	fragS *frag = segment_info[idx].frchainP->frch_root;
1847
1848	while (frag)
1849	{
1850	size = frag->fr_address;
1851	if (frag->fr_address != size)
1852	{
1853	fprintf (stderr, _("Out of step\n"));
1854	size = frag->fr_address;
1855	}
1856
1857	switch (frag->fr_type)
1858	{
1859	#ifdef TC_COFF_SIZEMACHDEP
1860	case rs_machine_dependent:
1861	size += TC_COFF_SIZEMACHDEP (frag);
1862	break;
1863	#endif
1864	case rs_space:
1865	case rs_fill:
1866	case rs_org:
1867	size += frag->fr_fix;
1868	size += frag->fr_offset * frag->fr_var;
1869	break;
1870	case rs_align:
1871	case rs_align_code:
1872	case rs_align_test:
1873	{
1874	addressT off;
1875
1876	size += frag->fr_fix;
1877	off = relax_align (size, frag->fr_offset);
1878	if (frag->fr_subtype != 0 && off > frag->fr_subtype)
1879	off = 0;
1880	size += off;
1881	}
1882	break;
1883	default:
1884	BAD_CASE (frag->fr_type);
1885	break;
1886	}
1887	frag = frag->fr_next;
1888	}
1889	segment_info[idx].scnhdr.s_size = size;
1890	return size;
1891	}
1892
1893	static unsigned int
1894	count_entries_in_chain (idx)
1895	unsigned int idx;
1896	{
1897	unsigned int nrelocs;
1898	fixS *fixup_ptr;
1899
1900	/* Count the relocations. */
1901	fixup_ptr = segment_info[idx].fix_root;
1902	nrelocs = 0;
1903	while (fixup_ptr != (fixS *) NULL)
1904	{
1905	if (fixup_ptr->fx_done == 0 && TC_COUNT_RELOC (fixup_ptr))
1906	{
1907	#if defined(TC_A29K) \|\| defined(TC_OR32)
1908	if (fixup_ptr->fx_r_type == RELOC_CONSTH)
1909	nrelocs += 2;
1910	else
1911	nrelocs++;
1912	#else
1913	nrelocs++;
1914	#endif
1915	}
1916
1917	fixup_ptr = fixup_ptr->fx_next;
1918	}
1919	return nrelocs;
1920	}
1921
1922	#ifdef TE_AUX
1923
1924	static int compare_external_relocs PARAMS ((const PTR, const PTR));
1925
1926	/* AUX's ld expects relocations to be sorted. */
1927
1928	static int
1929	compare_external_relocs (x, y)
1930	const PTR x;
1931	const PTR y;
1932	{
1933	struct external_reloc a = (struct external_reloc ) x;
1934	struct external_reloc b = (struct external_reloc ) y;
1935	bfd_vma aadr = bfd_getb32 (a->r_vaddr);
1936	bfd_vma badr = bfd_getb32 (b->r_vaddr);
1937	return (aadr < badr ? -1 : badr < aadr ? 1 : 0);
1938	}
1939
1940	#endif
1941
1942	/* Output all the relocations for a section. */
1943
1944	void
1945	do_relocs_for (abfd, h, file_cursor)
1946	bfd * abfd;
1947	object_headers * h;
1948	unsigned long *file_cursor;
1949	{
1950	unsigned int nrelocs;
1951	unsigned int idx;
1952	unsigned long reloc_start = *file_cursor;
1953
1954	for (idx = SEG_E0; idx < SEG_LAST; idx++)
1955	{
1956	if (segment_info[idx].scnhdr.s_name[0])
1957	{
1958	struct external_reloc *ext_ptr;
1959	struct external_reloc *external_reloc_vec;
1960	unsigned int external_reloc_size;
1961	unsigned int base = segment_info[idx].scnhdr.s_paddr;
1962	fixS *fix_ptr = segment_info[idx].fix_root;
1963	nrelocs = count_entries_in_chain (idx);
1964
1965	if (nrelocs)
1966	/* Bypass this stuff if no relocs. This also incidentally
1967	avoids a SCO bug, where free(malloc(0)) tends to crash. */
1968	{
1969	external_reloc_size = nrelocs * RELSZ;
1970	external_reloc_vec =
1971	(struct external_reloc *) malloc (external_reloc_size);
1972
1973	ext_ptr = external_reloc_vec;
1974
1975	/* Fill in the internal coff style reloc struct from the
1976	internal fix list. */
1977	while (fix_ptr)
1978	{
1979	struct internal_reloc intr;
1980
1981	/* Only output some of the relocations. */
1982	if (fix_ptr->fx_done == 0 && TC_COUNT_RELOC (fix_ptr))
1983	{
1984	#ifdef TC_RELOC_MANGLE
1985	TC_RELOC_MANGLE (&segment_info[idx], fix_ptr, &intr,
1986	base);
1987	#else
1988	symbolS *dot;
1989	symbolS *symbol_ptr = fix_ptr->fx_addsy;
1990
1991	intr.r_type = TC_COFF_FIX2RTYPE (fix_ptr);
1992	intr.r_vaddr =
1993	base + fix_ptr->fx_frag->fr_address + fix_ptr->fx_where;
1994
1995	#ifdef TC_KEEP_FX_OFFSET
1996	intr.r_offset = fix_ptr->fx_offset;
1997	#else
1998	intr.r_offset = 0;
1999	#endif
2000
2001	while (symbol_ptr->sy_value.X_op == O_symbol
2002	&& (! S_IS_DEFINED (symbol_ptr)
2003	\|\| S_IS_COMMON (symbol_ptr)))
2004	{
2005	symbolS *n;
2006
2007	/* We must avoid looping, as that can occur
2008	with a badly written program. */
2009	n = symbol_ptr->sy_value.X_add_symbol;
2010	if (n == symbol_ptr)
2011	break;
2012	symbol_ptr = n;
2013	}
2014
2015	/* Turn the segment of the symbol into an offset. */
2016	if (symbol_ptr)
2017	{
2018	resolve_symbol_value (symbol_ptr);
2019	if (! symbol_ptr->sy_resolved)
2020	{
2021	char *file;
2022	unsigned int line;
2023
2024	if (expr_symbol_where (symbol_ptr, &file, &line))
2025	as_bad_where (file, line,
2026	_("unresolved relocation"));
2027	else
2028	as_bad (_("bad relocation: symbol `%s' not in symbol table"),
2029	S_GET_NAME (symbol_ptr));
2030	}
2031
2032	dot = segment_info[S_GET_SEGMENT (symbol_ptr)].dot;
2033	if (dot)
2034	intr.r_symndx = dot->sy_number;
2035	else
2036	intr.r_symndx = symbol_ptr->sy_number;
2037	}
2038	else
2039	intr.r_symndx = -1;
2040	#endif
2041	(void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr);
2042	ext_ptr++;
2043	#if defined(TC_A29K)
2044	/* The 29k has a special kludge for the high 16 bit
2045	reloc. Two relocations are emited, R_IHIHALF,
2046	and R_IHCONST. The second one doesn't contain a
2047	symbol, but uses the value for offset. */
2048	if (intr.r_type == R_IHIHALF)
2049	{
2050	/* Now emit the second bit. */
2051	intr.r_type = R_IHCONST;
2052	intr.r_symndx = fix_ptr->fx_addnumber;
2053	(void) bfd_coff_swap_reloc_out (abfd, &intr, ext_ptr);
2054	ext_ptr++;
2055	}
2056	#endif
2057	#if defined(TC_OR32)
2058	/* The or32 has a special kludge for the high 16 bit
2059	reloc. Two relocations are emited, R_IHIHALF,
2060	and R_IHCONST. The second one doesn't contain a
2061	symbol, but uses the value for offset. */
2062	if (intr.r_type == R_IHIHALF)
2063	{
2064	/* Now emit the second bit. */
2065	intr.r_type = R_IHCONST;
2066	intr.r_symndx = fix_ptr->fx_addnumber;
2067	(void) bfd_coff_swap_reloc_out (abfd, & intr, ext_ptr);
2068	ext_ptr ++;
2069	}
2070	#endif
2071	}
2072
2073	fix_ptr = fix_ptr->fx_next;
2074	}
2075	#ifdef TE_AUX
2076	/* Sort the reloc table. */
2077	qsort ((PTR) external_reloc_vec, nrelocs,
2078	sizeof (struct external_reloc), compare_external_relocs);
2079	#endif
2080	/* Write out the reloc table. */
2081	bfd_bwrite ((PTR) external_reloc_vec,
2082	(bfd_size_type) external_reloc_size, abfd);
2083	free (external_reloc_vec);
2084
2085	/* Fill in section header info. */
2086	segment_info[idx].scnhdr.s_relptr = *file_cursor;
2087	*file_cursor += external_reloc_size;
2088	segment_info[idx].scnhdr.s_nreloc = nrelocs;
2089	}
2090	else
2091	{
2092	/* No relocs. */
2093	segment_info[idx].scnhdr.s_relptr = 0;
2094	}
2095	}
2096	}
2097
2098	/* Set relocation_size field in file headers. */
2099	H_SET_RELOCATION_SIZE (h, *file_cursor - reloc_start, 0);
2100	}
2101
2102	/* Run through a frag chain and write out the data to go with it, fill
2103	in the scnhdrs with the info on the file postions. */
2104
2105	static void
2106	fill_section (abfd, h, file_cursor)
2107	bfd * abfd;
2108	object_headers *h ATTRIBUTE_UNUSED;
2109	unsigned long *file_cursor;
2110	{
2111	unsigned int i;
2112	unsigned int paddr = 0;
2113
2114	for (i = SEG_E0; i < SEG_UNKNOWN; i++)
2115	{
2116	unsigned int offset = 0;
2117	struct internal_scnhdr *s = &(segment_info[i].scnhdr);
2118
2119	PROGRESS (1);
2120
2121	if (s->s_name[0])
2122	{
2123	fragS *frag = segment_info[i].frchainP->frch_root;
2124	char *buffer = NULL;
2125
2126	if (s->s_size == 0)
2127	s->s_scnptr = 0;
2128	else
2129	{
2130	buffer = xmalloc (s->s_size);
2131	s->s_scnptr = *file_cursor;
2132	}
2133	know (s->s_paddr == paddr);
2134
2135	if (strcmp (s->s_name, ".text") == 0)
2136	s->s_flags \|= STYP_TEXT;
2137	else if (strcmp (s->s_name, ".data") == 0)
2138	s->s_flags \|= STYP_DATA;
2139	else if (strcmp (s->s_name, ".bss") == 0)
2140	{
2141	s->s_scnptr = 0;
2142	s->s_flags \|= STYP_BSS;
2143
2144	/* @@ Should make the i386 and a29k coff targets define
2145	COFF_NOLOAD_PROBLEM, and have only one test here. */
2146	#ifndef TC_I386
2147	#ifndef TC_A29K
2148	#ifndef TC_OR32
2149	#ifndef COFF_NOLOAD_PROBLEM
2150	/* Apparently the SVR3 linker (and exec syscall) and UDI
2151	mondfe progrem are confused by noload sections. */
2152	s->s_flags \|= STYP_NOLOAD;
2153	#endif
2154	#endif
2155	#endif
2156	#endif
2157	}
2158	else if (strcmp (s->s_name, ".lit") == 0)
2159	s->s_flags = STYP_LIT \| STYP_TEXT;
2160	else if (strcmp (s->s_name, ".init") == 0)
2161	s->s_flags \|= STYP_TEXT;
2162	else if (strcmp (s->s_name, ".fini") == 0)
2163	s->s_flags \|= STYP_TEXT;
2164	else if (strncmp (s->s_name, ".comment", 8) == 0)
2165	s->s_flags \|= STYP_INFO;
2166
2167	while (frag)
2168	{
2169	unsigned int fill_size;
2170	switch (frag->fr_type)
2171	{
2172	case rs_machine_dependent:
2173	if (frag->fr_fix)
2174	{
2175	memcpy (buffer + frag->fr_address,
2176	frag->fr_literal,
2177	(unsigned int) frag->fr_fix);
2178	offset += frag->fr_fix;
2179	}
2180
2181	break;
2182	case rs_space:
2183	case rs_fill:
2184	case rs_align:
2185	case rs_align_code:
2186	case rs_align_test:
2187	case rs_org:
2188	if (frag->fr_fix)
2189	{
2190	memcpy (buffer + frag->fr_address,
2191	frag->fr_literal,
2192	(unsigned int) frag->fr_fix);
2193	offset += frag->fr_fix;
2194	}
2195
2196	fill_size = frag->fr_var;
2197	if (fill_size && frag->fr_offset > 0)
2198	{
2199	unsigned int count;
2200	unsigned int off = frag->fr_fix;
2201	for (count = frag->fr_offset; count; count--)
2202	{
2203	if (fill_size + frag->fr_address + off <= s->s_size)
2204	{
2205	memcpy (buffer + frag->fr_address + off,
2206	frag->fr_literal + frag->fr_fix,
2207	fill_size);
2208	off += fill_size;
2209	offset += fill_size;
2210	}
2211	}
2212	}
2213	break;
2214	case rs_broken_word:
2215	break;
2216	default:
2217	abort ();
2218	}
2219	frag = frag->fr_next;
2220	}
2221
2222	if (s->s_size != 0)
2223	{
2224	if (s->s_scnptr != 0)
2225	{
2226	bfd_bwrite (buffer, s->s_size, abfd);
2227	*file_cursor += s->s_size;
2228	}
2229	free (buffer);
2230	}
2231	paddr += s->s_size;
2232	}
2233	}
2234	}
2235
2236	/* Coff file generation & utilities. */
2237
2238	static void
2239	coff_header_append (abfd, h)
2240	bfd * abfd;
2241	object_headers * h;
2242	{
2243	unsigned int i;
2244	char buffer[1000];
2245	char buffero[1000];
2246	#ifdef COFF_LONG_SECTION_NAMES
2247	unsigned long string_size = 4;
2248	#endif
2249
2250	bfd_seek (abfd, (file_ptr) 0, 0);
2251
2252	#ifndef OBJ_COFF_OMIT_OPTIONAL_HEADER
2253	H_SET_MAGIC_NUMBER (h, COFF_MAGIC);
2254	H_SET_VERSION_STAMP (h, 0);
2255	H_SET_ENTRY_POINT (h, 0);
2256	H_SET_TEXT_START (h, segment_info[SEG_E0].frchainP->frch_root->fr_address);
2257	H_SET_DATA_START (h, segment_info[SEG_E1].frchainP->frch_root->fr_address);
2258	H_SET_SIZEOF_OPTIONAL_HEADER (h, bfd_coff_swap_aouthdr_out(abfd, &h->aouthdr,
2259	buffero));
2260	#else /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
2261	H_SET_SIZEOF_OPTIONAL_HEADER (h, 0);
2262	#endif /* defined (OBJ_COFF_OMIT_OPTIONAL_HEADER) */
2263
2264	i = bfd_coff_swap_filehdr_out (abfd, &h->filehdr, buffer);
2265
2266	bfd_bwrite (buffer, (bfd_size_type) i, abfd);
2267	bfd_bwrite (buffero, (bfd_size_type) H_GET_SIZEOF_OPTIONAL_HEADER (h), abfd);
2268
2269	for (i = SEG_E0; i < SEG_LAST; i++)
2270	{
2271	if (segment_info[i].scnhdr.s_name[0])
2272	{
2273	unsigned int size;
2274
2275	#ifdef COFF_LONG_SECTION_NAMES
2276	/* Support long section names as found in PE. This code
2277	must coordinate with that in write_object_file and
2278	w_strings. */
2279	if (strlen (segment_info[i].name) > SCNNMLEN)
2280	{
2281	memset (segment_info[i].scnhdr.s_name, 0, SCNNMLEN);
2282	sprintf (segment_info[i].scnhdr.s_name, "/%lu", string_size);
2283	string_size += strlen (segment_info[i].name) + 1;
2284	}
2285	#endif
2286	size = bfd_coff_swap_scnhdr_out (abfd,
2287	&(segment_info[i].scnhdr),
2288	buffer);
2289	if (size == 0)
2290	as_bad (_("bfd_coff_swap_scnhdr_out failed"));
2291	bfd_bwrite (buffer, (bfd_size_type) size, abfd);
2292	}
2293	}
2294	}
2295
2296	char *
2297	symbol_to_chars (abfd, where, symbolP)
2298	bfd * abfd;
2299	char *where;
2300	symbolS * symbolP;
2301	{
2302	unsigned int numaux = symbolP->sy_symbol.ost_entry.n_numaux;
2303	unsigned int i;
2304	valueT val;
2305
2306	/* Turn any symbols with register attributes into abs symbols. */
2307	if (S_GET_SEGMENT (symbolP) == reg_section)
2308	S_SET_SEGMENT (symbolP, absolute_section);
2309
2310	/* At the same time, relocate all symbols to their output value. */
2311	#ifndef TE_PE
2312	val = (segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_paddr
2313	+ S_GET_VALUE (symbolP));
2314	#else
2315	val = S_GET_VALUE (symbolP);
2316	#endif
2317
2318	S_SET_VALUE (symbolP, val);
2319
2320	symbolP->sy_symbol.ost_entry.n_value = val;
2321
2322	where += bfd_coff_swap_sym_out (abfd, &symbolP->sy_symbol.ost_entry,
2323	where);
2324
2325	for (i = 0; i < numaux; i++)
2326	{
2327	where += bfd_coff_swap_aux_out (abfd,
2328	&symbolP->sy_symbol.ost_auxent[i],
2329	S_GET_DATA_TYPE (symbolP),
2330	S_GET_STORAGE_CLASS (symbolP),
2331	i, numaux, where);
2332	}
2333
2334	return where;
2335	}
2336
2337	void
2338	coff_obj_symbol_new_hook (symbolP)
2339	symbolS *symbolP;
2340	{
2341	char underscore = 0; /* Symbol has leading _ */
2342
2343	/* Effective symbol. */
2344	/* Store the pointer in the offset. */
2345	S_SET_ZEROES (symbolP, 0L);
2346	S_SET_DATA_TYPE (symbolP, T_NULL);
2347	S_SET_STORAGE_CLASS (symbolP, 0);
2348	S_SET_NUMBER_AUXILIARY (symbolP, 0);
2349	/* Additional information. */
2350	symbolP->sy_symbol.ost_flags = 0;
2351	/* Auxiliary entries. */
2352	memset ((char *) &symbolP->sy_symbol.ost_auxent[0], 0, AUXESZ);
2353
2354	if (S_IS_STRING (symbolP))
2355	SF_SET_STRING (symbolP);
2356	if (!underscore && S_IS_LOCAL (symbolP))
2357	SF_SET_LOCAL (symbolP);
2358	}
2359
2360	/* Handle .ln directives. */
2361
2362	static void
2363	obj_coff_ln (appline)
2364	int appline;
2365	{
2366	int l;
2367
2368	if (! appline && def_symbol_in_progress != NULL)
2369	{
2370	/* Wrong context. */
2371	as_warn (_(".ln pseudo-op inside .def/.endef: ignored."));
2372	demand_empty_rest_of_line ();
2373	return;
2374	}
2375
2376	l = get_absolute_expression ();
2377	c_line_new (0, frag_now_fix (), l, frag_now);
2378
2379	if (appline)
2380	new_logical_line ((char *) NULL, l - 1);
2381
2382	#ifndef NO_LISTING
2383	{
2384	extern int listing;
2385
2386	if (listing)
2387	{
2388	if (! appline)
2389	l += line_base - 1;
2390	listing_source_line ((unsigned int) l);
2391	}
2392
2393	}
2394	#endif
2395	demand_empty_rest_of_line ();
2396	}
2397
2398	/* Handle .def directives.
2399
2400	One might ask : why can't we symbol_new if the symbol does not
2401	already exist and fill it with debug information. Because of
2402	the C_EFCN special symbol. It would clobber the value of the
2403	function symbol before we have a chance to notice that it is
2404	a C_EFCN. And a second reason is that the code is more clear this
2405	way. (at least I think it is :-). */
2406
2407	#define SKIP_SEMI_COLON() while (*input_line_pointer++ != ';')
2408	#define SKIP_WHITESPACES() while (*input_line_pointer == ' ' \|\| \
2409	*input_line_pointer == '\t') \
2410	input_line_pointer++;
2411
2412	static void
2413	obj_coff_def (what)
2414	int what ATTRIBUTE_UNUSED;
2415	{
2416	char name_end; /* Char after the end of name. */
2417	char symbol_name; / Name of the debug symbol. */
2418	char symbol_name_copy; / Temporary copy of the name. */
2419	unsigned int symbol_name_length;
2420
2421	if (def_symbol_in_progress != NULL)
2422	{
2423	as_warn (_(".def pseudo-op used inside of .def/.endef: ignored."));
2424	demand_empty_rest_of_line ();
2425	return;
2426	}
2427
2428	SKIP_WHITESPACES ();
2429
2430	def_symbol_in_progress = (symbolS ) obstack_alloc (&notes, sizeof (def_symbol_in_progress));
2431	memset (def_symbol_in_progress, 0, sizeof (*def_symbol_in_progress));
2432
2433	symbol_name = input_line_pointer;
2434	name_end = get_symbol_end ();
2435	symbol_name_length = strlen (symbol_name);
2436	symbol_name_copy = xmalloc (symbol_name_length + 1);
2437	strcpy (symbol_name_copy, symbol_name);
2438	#ifdef tc_canonicalize_symbol_name
2439	symbol_name_copy = tc_canonicalize_symbol_name (symbol_name_copy);
2440	#endif
2441
2442	/* Initialize the new symbol. */
2443	#ifdef STRIP_UNDERSCORE
2444	S_SET_NAME (def_symbol_in_progress, (*symbol_name_copy == '_'
2445	? symbol_name_copy + 1
2446	: symbol_name_copy));
2447	#else /* STRIP_UNDERSCORE */
2448	S_SET_NAME (def_symbol_in_progress, symbol_name_copy);
2449	#endif /* STRIP_UNDERSCORE */
2450	/* free(symbol_name_copy); */
2451	def_symbol_in_progress->sy_name_offset = (unsigned long) ~0;
2452	def_symbol_in_progress->sy_number = ~0;
2453	def_symbol_in_progress->sy_frag = &zero_address_frag;
2454	S_SET_VALUE (def_symbol_in_progress, 0);
2455
2456	if (S_IS_STRING (def_symbol_in_progress))
2457	SF_SET_STRING (def_symbol_in_progress);
2458
2459	*input_line_pointer = name_end;
2460
2461	demand_empty_rest_of_line ();
2462	}
2463
2464	unsigned int dim_index;
2465
2466	static void
2467	obj_coff_endef (ignore)
2468	int ignore ATTRIBUTE_UNUSED;
2469	{
2470	symbolS *symbolP = 0;
2471	/* DIM BUG FIX sac@cygnus.com */
2472	dim_index = 0;
2473	if (def_symbol_in_progress == NULL)
2474	{
2475	as_warn (_(".endef pseudo-op used outside of .def/.endef: ignored."));
2476	demand_empty_rest_of_line ();
2477	return;
2478	}
2479
2480	/* Set the section number according to storage class. */
2481	switch (S_GET_STORAGE_CLASS (def_symbol_in_progress))
2482	{
2483	case C_STRTAG:
2484	case C_ENTAG:
2485	case C_UNTAG:
2486	SF_SET_TAG (def_symbol_in_progress);
2487	/* Intentional fallthrough. */
2488
2489	case C_FILE:
2490	case C_TPDEF:
2491	SF_SET_DEBUG (def_symbol_in_progress);
2492	S_SET_SEGMENT (def_symbol_in_progress, SEG_DEBUG);
2493	break;
2494
2495	case C_EFCN:
2496	/* Do not emit this symbol. */
2497	SF_SET_LOCAL (def_symbol_in_progress);
2498	/* Intentional fallthrough. */
2499
2500	case C_BLOCK:
2501	/* Will need processing before writing. */
2502	SF_SET_PROCESS (def_symbol_in_progress);
2503	/* Intentional fallthrough. */
2504
2505	case C_FCN:
2506	S_SET_SEGMENT (def_symbol_in_progress, SEG_E0);
2507
2508	if (strcmp (S_GET_NAME (def_symbol_in_progress), ".bf") == 0)
2509	{ /* .bf */
2510	if (function_lineoff < 0)
2511	fprintf (stderr, _("`.bf' symbol without preceding function\n"));
2512
2513	SA_GET_SYM_LNNOPTR (last_line_symbol) = function_lineoff;
2514
2515	SF_SET_PROCESS (last_line_symbol);
2516	SF_SET_ADJ_LNNOPTR (last_line_symbol);
2517	SF_SET_PROCESS (def_symbol_in_progress);
2518	function_lineoff = -1;
2519	}
2520
2521	/* Value is always set to . */
2522	def_symbol_in_progress->sy_frag = frag_now;
2523	S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
2524	break;
2525
2526	#ifdef C_AUTOARG
2527	case C_AUTOARG:
2528	#endif /* C_AUTOARG */
2529	case C_AUTO:
2530	case C_REG:
2531	case C_MOS:
2532	case C_MOE:
2533	case C_MOU:
2534	case C_ARG:
2535	case C_REGPARM:
2536	case C_FIELD:
2537	case C_EOS:
2538	SF_SET_DEBUG (def_symbol_in_progress);
2539	S_SET_SEGMENT (def_symbol_in_progress, absolute_section);
2540	break;
2541
2542	case C_EXT:
2543	case C_WEAKEXT:
2544	#ifdef TE_PE
2545	case C_NT_WEAK:
2546	#endif
2547	case C_STAT:
2548	case C_LABEL:
2549	/* Valid but set somewhere else (s_comm, s_lcomm, colon). */
2550	break;
2551
2552	case C_USTATIC:
2553	case C_EXTDEF:
2554	case C_ULABEL:
2555	as_warn (_("unexpected storage class %d"), S_GET_STORAGE_CLASS (def_symbol_in_progress));
2556	break;
2557	}
2558
2559	/* Now that we have built a debug symbol, try to find if we should
2560	merge with an existing symbol or not. If a symbol is C_EFCN or
2561	absolute_section or untagged SEG_DEBUG it never merges. We also
2562	don't merge labels, which are in a different namespace, nor
2563	symbols which have not yet been defined since they are typically
2564	unique, nor do we merge tags with non-tags. */
2565
2566	/* Two cases for functions. Either debug followed by definition or
2567	definition followed by debug. For definition first, we will
2568	merge the debug symbol into the definition. For debug first, the
2569	lineno entry MUST point to the definition function or else it
2570	will point off into space when crawl_symbols() merges the debug
2571	symbol into the real symbol. Therefor, let's presume the debug
2572	symbol is a real function reference. */
2573
2574	/* FIXME-SOON If for some reason the definition label/symbol is
2575	never seen, this will probably leave an undefined symbol at link
2576	time. */
2577
2578	if (S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_EFCN
2579	\|\| S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_LABEL
2580	\|\| (S_GET_SEGMENT (def_symbol_in_progress) == SEG_DEBUG
2581	&& !SF_GET_TAG (def_symbol_in_progress))
2582	\|\| S_GET_SEGMENT (def_symbol_in_progress) == absolute_section
2583	\|\| def_symbol_in_progress->sy_value.X_op != O_constant
2584	\|\| (symbolP = symbol_find_base (S_GET_NAME (def_symbol_in_progress), DO_NOT_STRIP)) == NULL
2585	\|\| (SF_GET_TAG (def_symbol_in_progress) != SF_GET_TAG (symbolP)))
2586	{
2587	symbol_append (def_symbol_in_progress, symbol_lastP, &symbol_rootP,
2588	&symbol_lastP);
2589	}
2590	else
2591	{
2592	/* This symbol already exists, merge the newly created symbol
2593	into the old one. This is not mandatory. The linker can
2594	handle duplicate symbols correctly. But I guess that it save
2595	a lot of space if the assembly file defines a lot of
2596	symbols. [loic] */
2597
2598	/* The debug entry (def_symbol_in_progress) is merged into the
2599	previous definition. */
2600
2601	c_symbol_merge (def_symbol_in_progress, symbolP);
2602	/* FIXME-SOON Should def_symbol_in_progress be free'd? xoxorich. /
2603	def_symbol_in_progress = symbolP;
2604
2605	if (SF_GET_FUNCTION (def_symbol_in_progress)
2606	\|\| SF_GET_TAG (def_symbol_in_progress)
2607	\|\| S_GET_STORAGE_CLASS (def_symbol_in_progress) == C_STAT)
2608	{
2609	/* For functions, and tags, and static symbols, the symbol
2610	must be where the debug symbol appears. Move the
2611	existing symbol to the current place. */
2612	/* If it already is at the end of the symbol list, do nothing. */
2613	if (def_symbol_in_progress != symbol_lastP)
2614	{
2615	symbol_remove (def_symbol_in_progress, &symbol_rootP,
2616	&symbol_lastP);
2617	symbol_append (def_symbol_in_progress, symbol_lastP,
2618	&symbol_rootP, &symbol_lastP);
2619	}
2620	}
2621	}
2622
2623	if (SF_GET_TAG (def_symbol_in_progress))
2624	{
2625	symbolS *oldtag;
2626
2627	oldtag = symbol_find_base (S_GET_NAME (def_symbol_in_progress),
2628	DO_NOT_STRIP);
2629	if (oldtag == NULL \|\| ! SF_GET_TAG (oldtag))
2630	tag_insert (S_GET_NAME (def_symbol_in_progress),
2631	def_symbol_in_progress);
2632	}
2633
2634	if (SF_GET_FUNCTION (def_symbol_in_progress))
2635	{
2636	know (sizeof (def_symbol_in_progress) <= sizeof (long));
2637	function_lineoff
2638	= c_line_new (def_symbol_in_progress, 0, 0, &zero_address_frag);
2639
2640	SF_SET_PROCESS (def_symbol_in_progress);
2641
2642	if (symbolP == NULL)
2643	{
2644	/* That is, if this is the first time we've seen the
2645	function... */
2646	symbol_table_insert (def_symbol_in_progress);
2647	}
2648	}
2649
2650	def_symbol_in_progress = NULL;
2651	demand_empty_rest_of_line ();
2652	}
2653
2654	static void
2655	obj_coff_dim (ignore)
2656	int ignore ATTRIBUTE_UNUSED;
2657	{
2658	int dim_index;
2659
2660	if (def_symbol_in_progress == NULL)
2661	{
2662	as_warn (_(".dim pseudo-op used outside of .def/.endef: ignored."));
2663	demand_empty_rest_of_line ();
2664	return;
2665	}
2666
2667	S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2668
2669	for (dim_index = 0; dim_index < DIMNUM; dim_index++)
2670	{
2671	SKIP_WHITESPACES ();
2672	SA_SET_SYM_DIMEN (def_symbol_in_progress, dim_index,
2673	get_absolute_expression ());
2674
2675	switch (*input_line_pointer)
2676	{
2677	case ',':
2678	input_line_pointer++;
2679	break;
2680
2681	default:
2682	as_warn (_("badly formed .dim directive ignored"));
2683	/* Intentional fallthrough. */
2684
2685	case '\n':
2686	case ';':
2687	dim_index = DIMNUM;
2688	break;
2689	}
2690	}
2691
2692	demand_empty_rest_of_line ();
2693	}
2694
2695	static void
2696	obj_coff_line (ignore)
2697	int ignore ATTRIBUTE_UNUSED;
2698	{
2699	int this_base;
2700	const char *name;
2701
2702	if (def_symbol_in_progress == NULL)
2703	{
2704	obj_coff_ln (0);
2705	return;
2706	}
2707
2708	name = S_GET_NAME (def_symbol_in_progress);
2709	this_base = get_absolute_expression ();
2710
2711	/* Only .bf symbols indicate the use of a new base line number; the
2712	line numbers associated with .ef, .bb, .eb are relative to the
2713	start of the containing function. */
2714	if (!strcmp (".bf", name))
2715	{
2716	#if 0 /* XXX Can we ever have line numbers going backwards? */
2717	if (this_base > line_base)
2718	#endif
2719	line_base = this_base;
2720
2721	#ifndef NO_LISTING
2722	{
2723	extern int listing;
2724	if (listing)
2725	listing_source_line ((unsigned int) line_base);
2726	}
2727	#endif
2728	}
2729
2730	S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2731	SA_SET_SYM_LNNO (def_symbol_in_progress, this_base);
2732
2733	demand_empty_rest_of_line ();
2734	}
2735
2736	static void
2737	obj_coff_size (ignore)
2738	int ignore ATTRIBUTE_UNUSED;
2739	{
2740	if (def_symbol_in_progress == NULL)
2741	{
2742	as_warn (_(".size pseudo-op used outside of .def/.endef ignored."));
2743	demand_empty_rest_of_line ();
2744	return;
2745	}
2746
2747	S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2748	SA_SET_SYM_SIZE (def_symbol_in_progress, get_absolute_expression ());
2749	demand_empty_rest_of_line ();
2750	}
2751
2752	static void
2753	obj_coff_scl (ignore)
2754	int ignore ATTRIBUTE_UNUSED;
2755	{
2756	if (def_symbol_in_progress == NULL)
2757	{
2758	as_warn (_(".scl pseudo-op used outside of .def/.endef ignored."));
2759	demand_empty_rest_of_line ();
2760	return;
2761	}
2762
2763	S_SET_STORAGE_CLASS (def_symbol_in_progress, get_absolute_expression ());
2764	demand_empty_rest_of_line ();
2765	}
2766
2767	static void
2768	obj_coff_tag (ignore)
2769	int ignore ATTRIBUTE_UNUSED;
2770	{
2771	char *symbol_name;
2772	char name_end;
2773
2774	if (def_symbol_in_progress == NULL)
2775	{
2776	as_warn (_(".tag pseudo-op used outside of .def/.endef ignored."));
2777	demand_empty_rest_of_line ();
2778	return;
2779	}
2780
2781	S_SET_NUMBER_AUXILIARY (def_symbol_in_progress, 1);
2782	symbol_name = input_line_pointer;
2783	name_end = get_symbol_end ();
2784	#ifdef tc_canonicalize_symbol_name
2785	symbol_name = tc_canonicalize_symbol_name (symbol_name);
2786	#endif
2787
2788	/* Assume that the symbol referred to by .tag is always defined.
2789	This was a bad assumption. I've added find_or_make. xoxorich. */
2790	SA_SET_SYM_TAGNDX (def_symbol_in_progress,
2791	(long) tag_find_or_make (symbol_name));
2792	if (SA_GET_SYM_TAGNDX (def_symbol_in_progress) == 0L)
2793	as_warn (_("tag not found for .tag %s"), symbol_name);
2794
2795	SF_SET_TAGGED (def_symbol_in_progress);
2796	*input_line_pointer = name_end;
2797
2798	demand_empty_rest_of_line ();
2799	}
2800
2801	static void
2802	obj_coff_type (ignore)
2803	int ignore ATTRIBUTE_UNUSED;
2804	{
2805	if (def_symbol_in_progress == NULL)
2806	{
2807	as_warn (_(".type pseudo-op used outside of .def/.endef ignored."));
2808	demand_empty_rest_of_line ();
2809	return;
2810	}
2811
2812	S_SET_DATA_TYPE (def_symbol_in_progress, get_absolute_expression ());
2813
2814	if (ISFCN (S_GET_DATA_TYPE (def_symbol_in_progress)) &&
2815	S_GET_STORAGE_CLASS (def_symbol_in_progress) != C_TPDEF)
2816	SF_SET_FUNCTION (def_symbol_in_progress);
2817
2818	demand_empty_rest_of_line ();
2819	}
2820
2821	static void
2822	obj_coff_val (ignore)
2823	int ignore ATTRIBUTE_UNUSED;
2824	{
2825	if (def_symbol_in_progress == NULL)
2826	{
2827	as_warn (_(".val pseudo-op used outside of .def/.endef ignored."));
2828	demand_empty_rest_of_line ();
2829	return;
2830	}
2831
2832	if (is_name_beginner (*input_line_pointer))
2833	{
2834	char *symbol_name = input_line_pointer;
2835	char name_end = get_symbol_end ();
2836
2837	#ifdef tc_canonicalize_symbol_name
2838	symbol_name = tc_canonicalize_symbol_name (symbol_name);
2839	#endif
2840
2841	if (!strcmp (symbol_name, "."))
2842	{
2843	def_symbol_in_progress->sy_frag = frag_now;
2844	S_SET_VALUE (def_symbol_in_progress, (valueT) frag_now_fix ());
2845	/* If the .val is != from the .def (e.g. statics). */
2846	}
2847	else if (strcmp (S_GET_NAME (def_symbol_in_progress), symbol_name))
2848	{
2849	def_symbol_in_progress->sy_value.X_op = O_symbol;
2850	def_symbol_in_progress->sy_value.X_add_symbol =
2851	symbol_find_or_make (symbol_name);
2852	def_symbol_in_progress->sy_value.X_op_symbol = NULL;
2853	def_symbol_in_progress->sy_value.X_add_number = 0;
2854
2855	/* If the segment is undefined when the forward reference is
2856	resolved, then copy the segment id from the forward
2857	symbol. */
2858	SF_SET_GET_SEGMENT (def_symbol_in_progress);
2859
2860	/* FIXME: gcc can generate address expressions here in
2861	unusual cases (search for "obscure" in sdbout.c). We
2862	just ignore the offset here, thus generating incorrect
2863	debugging information. We ignore the rest of the line
2864	just below. */
2865	}
2866	/* Otherwise, it is the name of a non debug symbol and
2867	its value will be calculated later. */
2868	*input_line_pointer = name_end;
2869
2870	/* FIXME: this is to avoid an error message in the
2871	FIXME case mentioned just above. */
2872	while (! is_end_of_line[(unsigned char) *input_line_pointer])
2873	++input_line_pointer;
2874	}
2875	else
2876	{
2877	S_SET_VALUE (def_symbol_in_progress,
2878	(valueT) get_absolute_expression ());
2879	} /* if symbol based */
2880
2881	demand_empty_rest_of_line ();
2882	}
2883
2884	#ifdef TE_PE
2885
2886	/* Handle the .linkonce pseudo-op. This is parsed by s_linkonce in
2887	read.c, which then calls this object file format specific routine. */
2888
2889	void
2890	obj_coff_pe_handle_link_once (type)
2891	enum linkonce_type type;
2892	{
2893	seg_info (now_seg)->scnhdr.s_flags \|= IMAGE_SCN_LNK_COMDAT;
2894
2895	/* We store the type in the seg_info structure, and use it to set up
2896	the auxiliary entry for the section symbol in c_section_symbol. */
2897	seg_info (now_seg)->linkonce = type;
2898	}
2899
2900	#endif /* TE_PE */
2901
2902	void
2903	coff_obj_read_begin_hook ()
2904	{
2905	/* These had better be the same. Usually 18 bytes. */
2906	#ifndef BFD_HEADERS
2907	know (sizeof (SYMENT) == sizeof (AUXENT));
2908	know (SYMESZ == AUXESZ);
2909	#endif
2910	tag_init ();
2911	}
2912
2913	/* This function runs through the symbol table and puts all the
2914	externals onto another chain. */
2915
2916	/* The chain of globals. */
2917	symbolS *symbol_globalP;
2918	symbolS *symbol_global_lastP;
2919
2920	/* The chain of externals. */
2921	symbolS *symbol_externP;
2922	symbolS *symbol_extern_lastP;
2923
2924	stack *block_stack;
2925	symbolS *last_functionP;
2926	static symbolS *last_bfP;
2927	symbolS *last_tagP;
2928
2929	static unsigned int
2930	yank_symbols ()
2931	{
2932	symbolS *symbolP;
2933	unsigned int symbol_number = 0;
2934	unsigned int last_file_symno = 0;
2935
2936	struct filename_list *filename_list_scan = filename_list_head;
2937
2938	for (symbolP = symbol_rootP;
2939	symbolP;
2940	symbolP = symbolP ? symbol_next (symbolP) : symbol_rootP)
2941	{
2942	if (symbolP->sy_mri_common)
2943	{
2944	if (S_GET_STORAGE_CLASS (symbolP) == C_EXT
2945	#ifdef TE_PE
2946	\|\| S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK
2947	#endif
2948	\|\| S_GET_STORAGE_CLASS (symbolP) == C_WEAKEXT)
2949	as_bad (_("%s: global symbols not supported in common sections"),
2950	S_GET_NAME (symbolP));
2951	symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2952	continue;
2953	}
2954
2955	if (!SF_GET_DEBUG (symbolP))
2956	{
2957	/* Debug symbols do not need all this rubbish. */
2958	symbolS *real_symbolP;
2959
2960	/* L* and C_EFCN symbols never merge. */
2961	if (!SF_GET_LOCAL (symbolP)
2962	&& !SF_GET_STATICS (symbolP)
2963	&& S_GET_STORAGE_CLASS (symbolP) != C_LABEL
2964	&& symbolP->sy_value.X_op == O_constant
2965	&& (real_symbolP = symbol_find_base (S_GET_NAME (symbolP), DO_NOT_STRIP))
2966	&& real_symbolP != symbolP)
2967	{
2968	/* FIXME-SOON: where do dups come from?
2969	Maybe tag references before definitions? xoxorich. */
2970	/* Move the debug data from the debug symbol to the
2971	real symbol. Do NOT do the oposite (i.e. move from
2972	real symbol to debug symbol and remove real symbol from the
2973	list.) Because some pointers refer to the real symbol
2974	whereas no pointers refer to the debug symbol. */
2975	c_symbol_merge (symbolP, real_symbolP);
2976	/* Replace the current symbol by the real one. */
2977	/* The symbols will never be the last or the first
2978	because : 1st symbol is .file and 3 last symbols are
2979	.text, .data, .bss. */
2980	symbol_remove (real_symbolP, &symbol_rootP, &symbol_lastP);
2981	symbol_insert (real_symbolP, symbolP, &symbol_rootP, &symbol_lastP);
2982	symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
2983	symbolP = real_symbolP;
2984	}
2985
2986	if (flag_readonly_data_in_text && (S_GET_SEGMENT (symbolP) == SEG_E1))
2987	S_SET_SEGMENT (symbolP, SEG_E0);
2988
2989	resolve_symbol_value (symbolP);
2990
2991	if (S_GET_STORAGE_CLASS (symbolP) == C_NULL)
2992	{
2993	if (!S_IS_DEFINED (symbolP) && !SF_GET_LOCAL (symbolP))
2994	{
2995	S_SET_EXTERNAL (symbolP);
2996	}
2997
2998	else if (S_GET_SEGMENT (symbolP) == SEG_E0)
2999	S_SET_STORAGE_CLASS (symbolP, C_LABEL);
3000
3001	else
3002	S_SET_STORAGE_CLASS (symbolP, C_STAT);
3003	}
3004
3005	/* Mainly to speed up if not -g. */
3006	if (SF_GET_PROCESS (symbolP))
3007	{
3008	/* Handle the nested blocks auxiliary info. */
3009	if (S_GET_STORAGE_CLASS (symbolP) == C_BLOCK)
3010	{
3011	if (!strcmp (S_GET_NAME (symbolP), ".bb"))
3012	stack_push (block_stack, (char *) &symbolP);
3013	else
3014	{
3015	/* .eb */
3016	symbolS *begin_symbolP;
3017
3018	begin_symbolP = (symbolS *) stack_pop (block_stack);
3019	if (begin_symbolP == (symbolS *) 0)
3020	as_warn (_("mismatched .eb"));
3021	else
3022	SA_SET_SYM_ENDNDX (begin_symbolP, symbol_number + 2);
3023	}
3024	}
3025	/* If we are able to identify the type of a function, and we
3026	are out of a function (last_functionP == 0) then, the
3027	function symbol will be associated with an auxiliary
3028	entry. */
3029	if (last_functionP == (symbolS *) 0 &&
3030	SF_GET_FUNCTION (symbolP))
3031	{
3032	last_functionP = symbolP;
3033
3034	if (S_GET_NUMBER_AUXILIARY (symbolP) < 1)
3035	S_SET_NUMBER_AUXILIARY (symbolP, 1);
3036
3037	/* Clobber possible stale .dim information. */
3038	#if 0
3039	/* Iffed out by steve - this fries the lnnoptr info too. */
3040	bzero (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen,
3041	sizeof (symbolP->sy_symbol.ost_auxent[0].x_sym.x_fcnary.x_ary.x_dimen));
3042	#endif
3043	}
3044	if (S_GET_STORAGE_CLASS (symbolP) == C_FCN)
3045	{
3046	if (strcmp (S_GET_NAME (symbolP), ".bf") == 0)
3047	{
3048	if (last_bfP != NULL)
3049	SA_SET_SYM_ENDNDX (last_bfP, symbol_number);
3050	last_bfP = symbolP;
3051	}
3052	}
3053	else if (S_GET_STORAGE_CLASS (symbolP) == C_EFCN)
3054	{
3055	/* I don't even know if this is needed for sdb. But
3056	the standard assembler generates it, so... */
3057	if (last_functionP == (symbolS *) 0)
3058	as_fatal (_("C_EFCN symbol out of scope"));
3059	SA_SET_SYM_FSIZE (last_functionP,
3060	(long) (S_GET_VALUE (symbolP) -
3061	S_GET_VALUE (last_functionP)));
3062	SA_SET_SYM_ENDNDX (last_functionP, symbol_number);
3063	last_functionP = (symbolS *) 0;
3064	}
3065	}
3066	}
3067	else if (SF_GET_TAG (symbolP))
3068	{
3069	/* First descriptor of a structure must point to
3070	the first slot after the structure description. */
3071	last_tagP = symbolP;
3072
3073	}
3074	else if (S_GET_STORAGE_CLASS (symbolP) == C_EOS)
3075	{
3076	/* +2 take in account the current symbol. */
3077	SA_SET_SYM_ENDNDX (last_tagP, symbol_number + 2);
3078	}
3079	else if (S_GET_STORAGE_CLASS (symbolP) == C_FILE)
3080	{
3081	/* If the filename was too long to fit in the
3082	auxent, put it in the string table. */
3083	if (SA_GET_FILE_FNAME_ZEROS (symbolP) == 0
3084	&& SA_GET_FILE_FNAME_OFFSET (symbolP) != 0)
3085	{
3086	SA_SET_FILE_FNAME_OFFSET (symbolP, string_byte_count);
3087	string_byte_count += strlen (filename_list_scan->filename) + 1;
3088	filename_list_scan = filename_list_scan->next;
3089	}
3090	if (S_GET_VALUE (symbolP))
3091	{
3092	S_SET_VALUE (symbolP, last_file_symno);
3093	last_file_symno = symbol_number;
3094	}
3095	}
3096
3097	#ifdef tc_frob_coff_symbol
3098	tc_frob_coff_symbol (symbolP);
3099	#endif
3100
3101	/* We must put the external symbols apart. The loader
3102	does not bomb if we do not. But the references in
3103	the endndx field for a .bb symbol are not corrected
3104	if an external symbol is removed between .bb and .be.
3105	I.e in the following case :
3106	[20] .bb endndx = 22
3107	[21] foo external
3108	[22] .be
3109	ld will move the symbol 21 to the end of the list but
3110	endndx will still be 22 instead of 21. */
3111
3112	if (SF_GET_LOCAL (symbolP))
3113	{
3114	/* Remove C_EFCN and LOCAL (L...) symbols. */
3115	/* Next pointer remains valid. */
3116	symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3117
3118	}
3119	else if (symbolP->sy_value.X_op == O_symbol
3120	&& (! S_IS_DEFINED (symbolP) \|\| S_IS_COMMON (symbolP)))
3121	{
3122	/* Skip symbols which were equated to undefined or common
3123	symbols. */
3124	symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3125	}
3126	else if (!S_IS_DEFINED (symbolP)
3127	&& !S_IS_DEBUG (symbolP)
3128	&& !SF_GET_STATICS (symbolP)
3129	&& (S_GET_STORAGE_CLASS (symbolP) == C_EXT
3130	#ifdef TE_PE
3131	\|\| S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK
3132	#endif
3133	\|\| S_GET_STORAGE_CLASS (symbolP) == C_WEAKEXT))
3134	{
3135	/* If external, Remove from the list. */
3136	symbolS *hold = symbol_previous (symbolP);
3137
3138	symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3139	symbol_clear_list_pointers (symbolP);
3140	symbol_append (symbolP, symbol_extern_lastP, &symbol_externP, &symbol_extern_lastP);
3141	symbolP = hold;
3142	}
3143	else if (! S_IS_DEBUG (symbolP)
3144	&& ! SF_GET_STATICS (symbolP)
3145	&& ! SF_GET_FUNCTION (symbolP)
3146	&& (S_GET_STORAGE_CLASS (symbolP) == C_EXT
3147	#ifdef TE_PE
3148	\|\| S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK
3149	#endif
3150	\|\| S_GET_STORAGE_CLASS (symbolP) == C_NT_WEAK))
3151	{
3152	symbolS *hold = symbol_previous (symbolP);
3153
3154	/* The O'Reilly COFF book says that defined global symbols
3155	come at the end of the symbol table, just before
3156	undefined global symbols. */
3157	symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3158	symbol_clear_list_pointers (symbolP);
3159	symbol_append (symbolP, symbol_global_lastP, &symbol_globalP,
3160	&symbol_global_lastP);
3161	symbolP = hold;
3162	}
3163	else
3164	{
3165	if (SF_GET_STRING (symbolP))
3166	{
3167	symbolP->sy_name_offset = string_byte_count;
3168	string_byte_count += strlen (S_GET_NAME (symbolP)) + 1;
3169	}
3170	else
3171	{
3172	symbolP->sy_name_offset = 0;
3173	}
3174
3175	symbolP->sy_number = symbol_number;
3176	symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP);
3177	}
3178	}
3179
3180	return symbol_number;
3181	}
3182
3183	static unsigned int
3184	glue_symbols (head, tail)
3185	symbolS **head;
3186	symbolS **tail;
3187	{
3188	unsigned int symbol_number = 0;
3189
3190	while (*head != NULL)
3191	{
3192	symbolS tmp = head;
3193
3194	/* Append. */
3195	symbol_remove (tmp, head, tail);
3196	symbol_append (tmp, symbol_lastP, &symbol_rootP, &symbol_lastP);
3197
3198	/* Process. */
3199	if (SF_GET_STRING (tmp))
3200	{
3201	tmp->sy_name_offset = string_byte_count;
3202	string_byte_count += strlen (S_GET_NAME (tmp)) + 1;
3203	}
3204	else
3205	{
3206	/* Fix "long" names. */
3207	tmp->sy_name_offset = 0;
3208	}
3209
3210	tmp->sy_number = symbol_number;
3211	symbol_number += 1 + S_GET_NUMBER_AUXILIARY (tmp);
3212	}
3213
3214	return symbol_number;
3215	}
3216
3217	static unsigned int
3218	tie_tags ()
3219	{
3220	unsigned int symbol_number = 0;
3221	symbolS *symbolP;
3222
3223	for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
3224	{
3225	symbolP->sy_number = symbol_number;
3226
3227	if (SF_GET_TAGGED (symbolP))
3228	{
3229	SA_SET_SYM_TAGNDX
3230	(symbolP,
3231	((symbolS *) SA_GET_SYM_TAGNDX (symbolP))->sy_number);
3232	}
3233
3234	symbol_number += 1 + S_GET_NUMBER_AUXILIARY (symbolP);
3235	}
3236
3237	return symbol_number;
3238	}
3239
3240
3241	static void
3242	crawl_symbols (h, abfd)
3243	object_headers *h;
3244	bfd *abfd ATTRIBUTE_UNUSED;
3245	{
3246	unsigned int i;
3247
3248	/* Initialize the stack used to keep track of the matching .bb .be. */
3249
3250	block_stack = stack_init (512, sizeof (symbolS *));
3251
3252	/* The symbol list should be ordered according to the following sequence
3253	order :
3254	. .file symbol
3255	. debug entries for functions
3256	. fake symbols for the sections, including .text .data and .bss
3257	. defined symbols
3258	. undefined symbols
3259	But this is not mandatory. The only important point is to put the
3260	undefined symbols at the end of the list. */
3261
3262	/* Is there a .file symbol ? If not insert one at the beginning. */
3263	if (symbol_rootP == NULL
3264	\|\| S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE)
3265	c_dot_file_symbol ("fake");
3266
3267	/* Build up static symbols for the sections, they are filled in later. */
3268
3269	for (i = SEG_E0; i < SEG_LAST; i++)
3270	if (segment_info[i].scnhdr.s_name[0])
3271	segment_info[i].dot = c_section_symbol ((char *) segment_info[i].name,
3272	i - SEG_E0 + 1);
3273
3274	/* Take all the externals out and put them into another chain. */
3275	H_SET_SYMBOL_TABLE_SIZE (h, yank_symbols ());
3276	/* Take the externals and glue them onto the end. */
3277	H_SET_SYMBOL_TABLE_SIZE (h,
3278	(H_GET_SYMBOL_COUNT (h)
3279	+ glue_symbols (&symbol_globalP,
3280	&symbol_global_lastP)
3281	+ glue_symbols (&symbol_externP,
3282	&symbol_extern_lastP)));
3283
3284	H_SET_SYMBOL_TABLE_SIZE (h, tie_tags ());
3285	know (symbol_globalP == NULL);
3286	know (symbol_global_lastP == NULL);
3287	know (symbol_externP == NULL);
3288	know (symbol_extern_lastP == NULL);
3289	}
3290
3291	/* Find strings by crawling along symbol table chain. */
3292
3293	void
3294	w_strings (where)
3295	char *where;
3296	{
3297	symbolS *symbolP;
3298	struct filename_list *filename_list_scan = filename_list_head;
3299
3300	/* Gotta do md_ byte-ordering stuff for string_byte_count first - KWK. */
3301	md_number_to_chars (where, (valueT) string_byte_count, 4);
3302	where += 4;
3303
3304	#ifdef COFF_LONG_SECTION_NAMES
3305	/* Support long section names as found in PE. This code must
3306	coordinate with that in coff_header_append and write_object_file. */
3307	{
3308	unsigned int i;
3309
3310	for (i = SEG_E0; i < SEG_LAST; i++)
3311	{
3312	if (segment_info[i].scnhdr.s_name[0]
3313	&& strlen (segment_info[i].name) > SCNNMLEN)
3314	{
3315	unsigned int size;
3316
3317	size = strlen (segment_info[i].name) + 1;
3318	memcpy (where, segment_info[i].name, size);
3319	where += size;
3320	}
3321	}
3322	}
3323	#endif /* COFF_LONG_SECTION_NAMES */
3324
3325	for (symbolP = symbol_rootP;
3326	symbolP;
3327	symbolP = symbol_next (symbolP))
3328	{
3329	unsigned int size;
3330
3331	if (SF_GET_STRING (symbolP))
3332	{
3333	size = strlen (S_GET_NAME (symbolP)) + 1;
3334	memcpy (where, S_GET_NAME (symbolP), size);
3335	where += size;
3336	}
3337	if (S_GET_STORAGE_CLASS (symbolP) == C_FILE
3338	&& SA_GET_FILE_FNAME_ZEROS (symbolP) == 0
3339	&& SA_GET_FILE_FNAME_OFFSET (symbolP) != 0)
3340	{
3341	size = strlen (filename_list_scan->filename) + 1;
3342	memcpy (where, filename_list_scan->filename, size);
3343	filename_list_scan = filename_list_scan ->next;
3344	where += size;
3345	}
3346	}
3347	}
3348
3349	static void
3350	do_linenos_for (abfd, h, file_cursor)
3351	bfd * abfd;
3352	object_headers * h;
3353	unsigned long *file_cursor;
3354	{
3355	unsigned int idx;
3356	unsigned long start = *file_cursor;
3357
3358	for (idx = SEG_E0; idx < SEG_LAST; idx++)
3359	{
3360	segment_info_type *s = segment_info + idx;
3361
3362	if (s->scnhdr.s_nlnno != 0)
3363	{
3364	struct lineno_list *line_ptr;
3365
3366	struct external_lineno *buffer =
3367	(struct external_lineno ) xmalloc (s->scnhdr.s_nlnno LINESZ);
3368
3369	struct external_lineno *dst = buffer;
3370
3371	/* Run through the table we've built and turn it into its external
3372	form, take this chance to remove duplicates. */
3373
3374	for (line_ptr = s->lineno_list_head;
3375	line_ptr != (struct lineno_list *) NULL;
3376	line_ptr = line_ptr->next)
3377	{
3378	if (line_ptr->line.l_lnno == 0)
3379	{
3380	/* Turn a pointer to a symbol into the symbols' index,
3381	provided that it has been initialised. */
3382	if (line_ptr->line.l_addr.l_symndx)
3383	line_ptr->line.l_addr.l_symndx =
3384	((symbolS *) line_ptr->line.l_addr.l_symndx)->sy_number;
3385	}
3386	else
3387	line_ptr->line.l_addr.l_paddr += ((struct frag *) (line_ptr->frag))->fr_address;
3388
3389	(void) bfd_coff_swap_lineno_out (abfd, &(line_ptr->line), dst);
3390	dst++;
3391	}
3392
3393	s->scnhdr.s_lnnoptr = *file_cursor;
3394
3395	bfd_bwrite (buffer, (bfd_size_type) s->scnhdr.s_nlnno * LINESZ, abfd);
3396	free (buffer);
3397
3398	file_cursor += s->scnhdr.s_nlnno LINESZ;
3399	}
3400	}
3401
3402	H_SET_LINENO_SIZE (h, *file_cursor - start);
3403	}
3404
3405	/* Now we run through the list of frag chains in a segment and
3406	make all the subsegment frags appear at the end of the
3407	list, as if the seg 0 was extra long. */
3408
3409	static void
3410	remove_subsegs ()
3411	{
3412	unsigned int i;
3413
3414	for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3415	{
3416	frchainS *head = segment_info[i].frchainP;
3417	fragS dummy;
3418	fragS *prev_frag = &dummy;
3419
3420	while (head && head->frch_seg == i)
3421	{
3422	prev_frag->fr_next = head->frch_root;
3423	prev_frag = head->frch_last;
3424	head = head->frch_next;
3425	}
3426	prev_frag->fr_next = 0;
3427	}
3428	}
3429
3430	unsigned long machine;
3431	int coff_flags;
3432
3433	#ifndef SUB_SEGMENT_ALIGN
3434	#ifdef HANDLE_ALIGN
3435	/* The last subsegment gets an aligment corresponding to the alignment
3436	of the section. This allows proper nop-filling at the end of
3437	code-bearing sections. */
3438	#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) \
3439	(!(FRCHAIN)->frch_next \|\| (FRCHAIN)->frch_next->frch_seg != (SEG) \
3440	? get_recorded_alignment (SEG) : 0)
3441	#else
3442	#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 1
3443	#endif
3444	#endif
3445
3446	extern void
3447	write_object_file ()
3448	{
3449	int i;
3450	const char *name;
3451	struct frchain *frchain_ptr;
3452
3453	object_headers headers;
3454	unsigned long file_cursor;
3455	bfd *abfd;
3456	unsigned int addr;
3457	abfd = bfd_openw (out_file_name, TARGET_FORMAT);
3458
3459	if (abfd == 0)
3460	{
3461	as_perror (_("FATAL: Can't create %s"), out_file_name);
3462	exit (EXIT_FAILURE);
3463	}
3464	bfd_set_format (abfd, bfd_object);
3465	bfd_set_arch_mach (abfd, BFD_ARCH, machine);
3466
3467	string_byte_count = 4;
3468
3469	/* Run through all the sub-segments and align them up. Also
3470	close any open frags. We tack a .fill onto the end of the
3471	frag chain so that any .align's size can be worked by looking
3472	at the next frag. */
3473	for (frchain_ptr = frchain_root;
3474	frchain_ptr != (struct frchain *) NULL;
3475	frchain_ptr = frchain_ptr->frch_next)
3476	{
3477	int alignment;
3478
3479	subseg_set (frchain_ptr->frch_seg, frchain_ptr->frch_subseg);
3480
3481	alignment = SUB_SEGMENT_ALIGN (now_seg, frchain_ptr);
3482
3483	#ifdef md_do_align
3484	md_do_align (alignment, (char *) NULL, 0, 0, alignment_done);
3485	#endif
3486	if (subseg_text_p (now_seg))
3487	frag_align_code (alignment, 0);
3488	else
3489	frag_align (alignment, 0, 0);
3490
3491	#ifdef md_do_align
3492	alignment_done:
3493	#endif
3494
3495	frag_wane (frag_now);
3496	frag_now->fr_fix = 0;
3497	know (frag_now->fr_next == NULL);
3498	}
3499
3500	remove_subsegs ();
3501
3502	for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3503	relax_segment (segment_info[i].frchainP->frch_root, i);
3504
3505	/* Relaxation has completed. Freeze all syms. */
3506	finalize_syms = 1;
3507
3508	H_SET_NUMBER_OF_SECTIONS (&headers, 0);
3509
3510	/* Find out how big the sections are, and set the addresses. */
3511	addr = 0;
3512	for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3513	{
3514	long size;
3515
3516	segment_info[i].scnhdr.s_paddr = addr;
3517	segment_info[i].scnhdr.s_vaddr = addr;
3518
3519	if (segment_info[i].scnhdr.s_name[0])
3520	{
3521	H_SET_NUMBER_OF_SECTIONS (&headers,
3522	H_GET_NUMBER_OF_SECTIONS (&headers) + 1);
3523
3524	#ifdef COFF_LONG_SECTION_NAMES
3525	/* Support long section names as found in PE. This code
3526	must coordinate with that in coff_header_append and
3527	w_strings. */
3528	{
3529	unsigned int len;
3530
3531	len = strlen (segment_info[i].name);
3532	if (len > SCNNMLEN)
3533	string_byte_count += len + 1;
3534	}
3535	#endif /* COFF_LONG_SECTION_NAMES */
3536	}
3537
3538	size = size_section (abfd, (unsigned int) i);
3539	addr += size;
3540
3541	/* I think the section alignment is only used on the i960; the
3542	i960 needs it, and it should do no harm on other targets. */
3543	#ifdef ALIGNMENT_IN_S_FLAGS
3544	segment_info[i].scnhdr.s_flags \|= (section_alignment[i] & 0xF) << 8;
3545	#else
3546	segment_info[i].scnhdr.s_align = 1 << section_alignment[i];
3547	#endif
3548
3549	if (i == SEG_E0)
3550	H_SET_TEXT_SIZE (&headers, size);
3551	else if (i == SEG_E1)
3552	H_SET_DATA_SIZE (&headers, size);
3553	else if (i == SEG_E2)
3554	H_SET_BSS_SIZE (&headers, size);
3555	}
3556
3557	/* Turn the gas native symbol table shape into a coff symbol table. */
3558	crawl_symbols (&headers, abfd);
3559
3560	if (string_byte_count == 4)
3561	string_byte_count = 0;
3562
3563	H_SET_STRING_SIZE (&headers, string_byte_count);
3564
3565	#ifdef tc_frob_file
3566	tc_frob_file ();
3567	#endif
3568
3569	for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3570	{
3571	fixup_mdeps (segment_info[i].frchainP->frch_root, &headers, i);
3572	fixup_segment (&segment_info[i], i);
3573	}
3574
3575	/* Look for ".stab" segments and fill in their initial symbols
3576	correctly. */
3577	for (i = SEG_E0; i < SEG_UNKNOWN; i++)
3578	{
3579	name = segment_info[i].name;
3580
3581	if (name != NULL
3582	&& strncmp (".stab", name, 5) == 0
3583	&& strncmp (".stabstr", name, 8) != 0)
3584	adjust_stab_section (abfd, i);
3585	}
3586
3587	file_cursor = H_GET_TEXT_FILE_OFFSET (&headers);
3588
3589	bfd_seek (abfd, (file_ptr) file_cursor, 0);
3590
3591	/* Plant the data. */
3592	fill_section (abfd, &headers, &file_cursor);
3593
3594	do_relocs_for (abfd, &headers, &file_cursor);
3595
3596	do_linenos_for (abfd, &headers, &file_cursor);
3597
3598	H_SET_FILE_MAGIC_NUMBER (&headers, COFF_MAGIC);
3599	#ifndef OBJ_COFF_OMIT_TIMESTAMP
3600	H_SET_TIME_STAMP (&headers, (long)time((time_t *)0));
3601	#else
3602	H_SET_TIME_STAMP (&headers, 0);
3603	#endif
3604	#ifdef TC_COFF_SET_MACHINE
3605	TC_COFF_SET_MACHINE (&headers);
3606	#endif
3607
3608	#ifndef COFF_FLAGS
3609	#define COFF_FLAGS 0
3610	#endif
3611
3612	#ifdef KEEP_RELOC_INFO
3613	H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) \|
3614	COFF_FLAGS \| coff_flags));
3615	#else
3616	H_SET_FLAGS (&headers, ((H_GET_LINENO_SIZE(&headers) ? 0 : F_LNNO) \|
3617	(H_GET_RELOCATION_SIZE(&headers) ? 0 : F_RELFLG) \|
3618	COFF_FLAGS \| coff_flags));
3619	#endif
3620
3621	{
3622	unsigned int symtable_size = H_GET_SYMBOL_TABLE_SIZE (&headers);
3623	char *buffer1 = xmalloc (symtable_size + string_byte_count + 1);
3624
3625	H_SET_SYMBOL_TABLE_POINTER (&headers, bfd_tell (abfd));
3626	w_symbols (abfd, buffer1, symbol_rootP);
3627	if (string_byte_count > 0)
3628	w_strings (buffer1 + symtable_size);
3629	bfd_bwrite (buffer1, (bfd_size_type) symtable_size + string_byte_count,
3630	abfd);
3631	free (buffer1);
3632	}
3633
3634	coff_header_append (abfd, &headers);
3635	#if 0
3636	/* Recent changes to write need this, but where it should
3637	go is up to Ken.. */
3638	if (!bfd_close_all_done (abfd))
3639	as_fatal (_("Can't close %s: %s"), out_file_name,
3640	bfd_errmsg (bfd_get_error ()));
3641	#else
3642	{
3643	extern bfd *stdoutput;
3644	stdoutput = abfd;
3645	}
3646	#endif
3647
3648	}
3649
3650	/* Add a new segment. This is called from subseg_new via the
3651	obj_new_segment macro. */
3652
3653	segT
3654	obj_coff_add_segment (name)
3655	const char *name;
3656	{
3657	unsigned int i;
3658
3659	#ifndef COFF_LONG_SECTION_NAMES
3660	char buf[SCNNMLEN + 1];
3661
3662	strncpy (buf, name, SCNNMLEN);
3663	buf[SCNNMLEN] = '\0';
3664	name = buf;
3665	#endif
3666
3667	for (i = SEG_E0; i < SEG_LAST && segment_info[i].scnhdr.s_name[0]; i++)
3668	if (strcmp (name, segment_info[i].name) == 0)
3669	return (segT) i;
3670
3671	if (i == SEG_LAST)
3672	{
3673	as_bad (_("Too many new sections; can't add \"%s\""), name);
3674	return now_seg;
3675	}
3676
3677	/* Add a new section. */
3678	strncpy (segment_info[i].scnhdr.s_name, name,
3679	sizeof (segment_info[i].scnhdr.s_name));
3680	segment_info[i].scnhdr.s_flags = STYP_REG;
3681	segment_info[i].name = xstrdup (name);
3682
3683	return (segT) i;
3684	}
3685
3686	/* Implement the .section pseudo op:
3687	.section name {, "flags"}
3688	^ ^
3689	\| +--- optional flags: 'b' for bss
3690	\| 'i' for info
3691	+-- section name 'l' for lib
3692	'n' for noload
3693	'o' for over
3694	'w' for data
3695	'd' (apparently m88k for data)
3696	'x' for text
3697	'r' for read-only data
3698	But if the argument is not a quoted string, treat it as a
3699	subsegment number. */
3700
3701	void
3702	obj_coff_section (ignore)
3703	int ignore ATTRIBUTE_UNUSED;
3704	{
3705	/* Strip out the section name. */
3706	char section_name, name;
3707	char c;
3708	unsigned int exp;
3709	long flags;
3710
3711	if (flag_mri)
3712	{
3713	char type;
3714
3715	s_mri_sect (&type);
3716	flags = 0;
3717	if (type == 'C')
3718	flags = STYP_TEXT;
3719	else if (type == 'D')
3720	flags = STYP_DATA;
3721	segment_info[now_seg].scnhdr.s_flags \|= flags;
3722
3723	return;
3724	}
3725
3726	section_name = input_line_pointer;
3727	c = get_symbol_end ();
3728
3729	name = xmalloc (input_line_pointer - section_name + 1);
3730	strcpy (name, section_name);
3731
3732	*input_line_pointer = c;
3733
3734	exp = 0;
3735	flags = 0;
3736
3737	SKIP_WHITESPACE ();
3738	if (*input_line_pointer == ',')
3739	{
3740	++input_line_pointer;
3741	SKIP_WHITESPACE ();
3742
3743	if (*input_line_pointer != '"')
3744	exp = get_absolute_expression ();
3745	else
3746	{
3747	++input_line_pointer;
3748	while (*input_line_pointer != '"'
3749	&& ! is_end_of_line[(unsigned char) *input_line_pointer])
3750	{
3751	switch (*input_line_pointer)
3752	{
3753	case 'b': flags \|= STYP_BSS; break;
3754	case 'i': flags \|= STYP_INFO; break;
3755	case 'l': flags \|= STYP_LIB; break;
3756	case 'n': flags \|= STYP_NOLOAD; break;
3757	case 'o': flags \|= STYP_OVER; break;
3758	case 'd':
3759	case 'w': flags \|= STYP_DATA; break;
3760	case 'x': flags \|= STYP_TEXT; break;
3761	case 'r': flags \|= STYP_LIT; break;
3762	default:
3763	as_warn(_("unknown section attribute '%c'"),
3764	*input_line_pointer);
3765	break;
3766	}
3767	++input_line_pointer;
3768	}
3769	if (*input_line_pointer == '"')
3770	++input_line_pointer;
3771	}
3772	}
3773
3774	subseg_new (name, (subsegT) exp);
3775
3776	segment_info[now_seg].scnhdr.s_flags \|= flags;
3777
3778	demand_empty_rest_of_line ();
3779	}
3780
3781	static void
3782	obj_coff_text (ignore)
3783	int ignore ATTRIBUTE_UNUSED;
3784	{
3785	subseg_new (".text", get_absolute_expression ());
3786	}
3787
3788	static void
3789	obj_coff_data (ignore)
3790	int ignore ATTRIBUTE_UNUSED;
3791	{
3792	if (flag_readonly_data_in_text)
3793	subseg_new (".text", get_absolute_expression () + 1000);
3794	else
3795	subseg_new (".data", get_absolute_expression ());
3796	}
3797
3798	static void
3799	obj_coff_ident (ignore)
3800	int ignore ATTRIBUTE_UNUSED;
3801	{
3802	segT current_seg = now_seg; /* Save current seg. */
3803	subsegT current_subseg = now_subseg;
3804
3805	subseg_new (".comment", 0); /* .comment seg. */
3806	stringer (1); /* Read string. */
3807	subseg_set (current_seg, current_subseg); /* Restore current seg. */
3808	}
3809
3810	void
3811	c_symbol_merge (debug, normal)
3812	symbolS *debug;
3813	symbolS *normal;
3814	{
3815	S_SET_DATA_TYPE (normal, S_GET_DATA_TYPE (debug));
3816	S_SET_STORAGE_CLASS (normal, S_GET_STORAGE_CLASS (debug));
3817
3818	if (S_GET_NUMBER_AUXILIARY (debug) > S_GET_NUMBER_AUXILIARY (normal))
3819	S_SET_NUMBER_AUXILIARY (normal, S_GET_NUMBER_AUXILIARY (debug));
3820
3821	if (S_GET_NUMBER_AUXILIARY (debug) > 0)
3822	memcpy ((char *) &normal->sy_symbol.ost_auxent[0],
3823	(char *) &debug->sy_symbol.ost_auxent[0],
3824	(unsigned int) (S_GET_NUMBER_AUXILIARY (debug) * AUXESZ));
3825
3826	/* Move the debug flags. */
3827	SF_SET_DEBUG_FIELD (normal, SF_GET_DEBUG_FIELD (debug));
3828	}
3829
3830	static int
3831	c_line_new (symbol, paddr, line_number, frag)
3832	symbolS * symbol;
3833	long paddr;
3834	int line_number;
3835	fragS * frag;
3836	{
3837	struct lineno_list *new_line =
3838	(struct lineno_list *) xmalloc (sizeof (struct lineno_list));
3839
3840	segment_info_type *s = segment_info + now_seg;
3841	new_line->line.l_lnno = line_number;
3842
3843	if (line_number == 0)
3844	{
3845	last_line_symbol = symbol;
3846	new_line->line.l_addr.l_symndx = (long) symbol;
3847	}
3848	else
3849	{
3850	new_line->line.l_addr.l_paddr = paddr;
3851	}
3852
3853	new_line->frag = (char *) frag;
3854	new_line->next = (struct lineno_list *) NULL;
3855
3856	if (s->lineno_list_head == (struct lineno_list *) NULL)
3857	s->lineno_list_head = new_line;
3858	else
3859	s->lineno_list_tail->next = new_line;
3860
3861	s->lineno_list_tail = new_line;
3862	return LINESZ * s->scnhdr.s_nlnno++;
3863	}
3864
3865	void
3866	c_dot_file_symbol (filename)
3867	char *filename;
3868	{
3869	symbolS *symbolP;
3870
3871	symbolP = symbol_new (".file",
3872	SEG_DEBUG,
3873	0,
3874	&zero_address_frag);
3875
3876	S_SET_STORAGE_CLASS (symbolP, C_FILE);
3877	S_SET_NUMBER_AUXILIARY (symbolP, 1);
3878
3879	if (strlen (filename) > FILNMLEN)
3880	{
3881	/* Filename is too long to fit into an auxent,
3882	we stick it into the string table instead. We keep
3883	a linked list of the filenames we find so we can emit
3884	them later. */
3885	struct filename_list f = ((struct filename_list )
3886	xmalloc (sizeof (struct filename_list)));
3887
3888	f->filename = filename;
3889	f->next = 0;
3890
3891	SA_SET_FILE_FNAME_ZEROS (symbolP, 0);
3892	SA_SET_FILE_FNAME_OFFSET (symbolP, 1);
3893
3894	if (filename_list_tail)
3895	filename_list_tail->next = f;
3896	else
3897	filename_list_head = f;
3898	filename_list_tail = f;
3899	}
3900	else
3901	{
3902	SA_SET_FILE_FNAME (symbolP, filename);
3903	}
3904	#ifndef NO_LISTING
3905	{
3906	extern int listing;
3907	if (listing)
3908	listing_source_file (filename);
3909	}
3910	#endif
3911	SF_SET_DEBUG (symbolP);
3912	S_SET_VALUE (symbolP, (valueT) previous_file_symbol);
3913
3914	previous_file_symbol = symbolP;
3915
3916	/* Make sure that the symbol is first on the symbol chain. */
3917	if (symbol_rootP != symbolP)
3918	{
3919	symbol_remove (symbolP, &symbol_rootP, &symbol_lastP);
3920	symbol_insert (symbolP, symbol_rootP, &symbol_rootP, &symbol_lastP);
3921	}
3922	}
3923
3924	/* Build a 'section static' symbol. */
3925
3926	symbolS *
3927	c_section_symbol (name, idx)
3928	char *name;
3929	int idx;
3930	{
3931	symbolS *symbolP;
3932
3933	symbolP = symbol_find_base (name, DO_NOT_STRIP);
3934	if (symbolP == NULL)
3935	symbolP = symbol_new (name, idx, 0, &zero_address_frag);
3936	else
3937	{
3938	/* Mmmm. I just love violating interfaces. Makes me feel...dirty. */
3939	S_SET_SEGMENT (symbolP, idx);
3940	symbolP->sy_frag = &zero_address_frag;
3941	}
3942
3943	S_SET_STORAGE_CLASS (symbolP, C_STAT);
3944	S_SET_NUMBER_AUXILIARY (symbolP, 1);
3945
3946	SF_SET_STATICS (symbolP);
3947
3948	#ifdef TE_DELTA
3949	/* manfred@s-direktnet.de: section symbols must have the LOCAL bit cleared,
3950	which is set by the new definition of LOCAL_LABEL in tc-m68k.h. */
3951	SF_CLEAR_LOCAL (symbolP);
3952	#endif
3953	#ifdef TE_PE
3954	/* If the .linkonce pseudo-op was used for this section, we must
3955	store the information in the auxiliary entry for the section
3956	symbol. */
3957	if (segment_info[idx].linkonce != LINKONCE_UNSET)
3958	{
3959	int type;
3960
3961	switch (segment_info[idx].linkonce)
3962	{
3963	default:
3964	abort ();
3965	case LINKONCE_DISCARD:
3966	type = IMAGE_COMDAT_SELECT_ANY;
3967	break;
3968	case LINKONCE_ONE_ONLY:
3969	type = IMAGE_COMDAT_SELECT_NODUPLICATES;
3970	break;
3971	case LINKONCE_SAME_SIZE:
3972	type = IMAGE_COMDAT_SELECT_SAME_SIZE;
3973	break;
3974	case LINKONCE_SAME_CONTENTS:
3975	type = IMAGE_COMDAT_SELECT_EXACT_MATCH;
3976	break;
3977	}
3978
3979	SYM_AUXENT (symbolP)->x_scn.x_comdat = type;
3980	}
3981	#endif /* TE_PE */
3982
3983	return symbolP;
3984	}
3985
3986	static void
3987	w_symbols (abfd, where, symbol_rootP)
3988	bfd * abfd;
3989	char *where;
3990	symbolS * symbol_rootP;
3991	{
3992	symbolS *symbolP;
3993	unsigned int i;
3994
3995	/* First fill in those values we have only just worked out. */
3996	for (i = SEG_E0; i < SEG_LAST; i++)
3997	{
3998	symbolP = segment_info[i].dot;
3999	if (symbolP)
4000	{
4001	SA_SET_SCN_SCNLEN (symbolP, segment_info[i].scnhdr.s_size);
4002	SA_SET_SCN_NRELOC (symbolP, segment_info[i].scnhdr.s_nreloc);
4003	SA_SET_SCN_NLINNO (symbolP, segment_info[i].scnhdr.s_nlnno);
4004	}
4005	}
4006
4007	/* Emit all symbols left in the symbol chain. */
4008	for (symbolP = symbol_rootP; symbolP; symbolP = symbol_next (symbolP))
4009	{
4010	/* Used to save the offset of the name. It is used to point
4011	to the string in memory but must be a file offset. */
4012	char *temp;
4013
4014	/* We can't fix the lnnoptr field in yank_symbols with the other
4015	adjustments, because we have to wait until we know where they
4016	go in the file. */
4017	if (SF_GET_ADJ_LNNOPTR (symbolP))
4018	SA_GET_SYM_LNNOPTR (symbolP) +=
4019	segment_info[S_GET_SEGMENT (symbolP)].scnhdr.s_lnnoptr;
4020
4021	tc_coff_symbol_emit_hook (symbolP);
4022
4023	temp = S_GET_NAME (symbolP);
4024	if (SF_GET_STRING (symbolP))
4025	{
4026	S_SET_OFFSET (symbolP, symbolP->sy_name_offset);
4027	S_SET_ZEROES (symbolP, 0);
4028	}
4029	else
4030	{
4031	memset (symbolP->sy_symbol.ost_entry.n_name, 0, SYMNMLEN);
4032	strncpy (symbolP->sy_symbol.ost_entry.n_name, temp, SYMNMLEN);
4033	}
4034	where = symbol_to_chars (abfd, where, symbolP);
4035	S_SET_NAME (symbolP, temp);
4036	}
4037	}
4038
4039	static void
4040	obj_coff_lcomm (ignore)
4041	int ignore ATTRIBUTE_UNUSED;
4042	{
4043	s_lcomm(0);
4044	return;
4045	#if 0
4046	char *name;
4047	char c;
4048	int temp;
4049	char *p;
4050
4051	symbolS *symbolP;
4052
4053	name = input_line_pointer;
4054
4055	c = get_symbol_end ();
4056	p = input_line_pointer;
4057	*p = c;
4058	SKIP_WHITESPACE ();
4059	if (*input_line_pointer != ',')
4060	{
4061	as_bad (_("Expected comma after name"));
4062	ignore_rest_of_line ();
4063	return;
4064	}
4065	if (*input_line_pointer == '\n')
4066	{
4067	as_bad (_("Missing size expression"));
4068	return;
4069	}
4070	input_line_pointer++;
4071	if ((temp = get_absolute_expression ()) < 0)
4072	{
4073	as_warn (_("lcomm length (%d.) <0! Ignored."), temp);
4074	ignore_rest_of_line ();
4075	return;
4076	}
4077	*p = 0;
4078
4079	symbolP = symbol_find_or_make (name);
4080
4081	if (S_GET_SEGMENT (symbolP) == SEG_UNKNOWN &&
4082	S_GET_VALUE (symbolP) == 0)
4083	{
4084	if (! need_pass_2)
4085	{
4086	char *p;
4087	segT current_seg = now_seg; /* Save current seg. */
4088	subsegT current_subseg = now_subseg;
4089
4090	subseg_set (SEG_E2, 1);
4091	symbolP->sy_frag = frag_now;
4092	p = frag_var(rs_org, 1, 1, (relax_substateT)0, symbolP,
4093	(offsetT) temp, (char *) 0);
4094	*p = 0;
4095	subseg_set (current_seg, current_subseg); /* Restore current seg. */
4096	S_SET_SEGMENT (symbolP, SEG_E2);
4097	S_SET_STORAGE_CLASS (symbolP, C_STAT);
4098	}
4099	}
4100	else
4101	as_bad (_("Symbol %s already defined"), name);
4102
4103	demand_empty_rest_of_line ();
4104	#endif
4105	}
4106
4107	static void
4108	fixup_mdeps (frags, h, this_segment)
4109	fragS *frags;
4110	object_headers *h ATTRIBUTE_UNUSED;
4111	segT this_segment;
4112	{
4113	subseg_change (this_segment, 0);
4114
4115	while (frags)
4116	{
4117	switch (frags->fr_type)
4118	{
4119	case rs_align:
4120	case rs_align_code:
4121	case rs_align_test:
4122	case rs_org:
4123	#ifdef HANDLE_ALIGN
4124	HANDLE_ALIGN (frags);
4125	#endif
4126	frags->fr_type = rs_fill;
4127	frags->fr_offset =
4128	((frags->fr_next->fr_address - frags->fr_address - frags->fr_fix)
4129	/ frags->fr_var);
4130	break;
4131	case rs_machine_dependent:
4132	md_convert_frag (h, this_segment, frags);
4133	frag_wane (frags);
4134	break;
4135	default:
4136	;
4137	}
4138	frags = frags->fr_next;
4139	}
4140	}
4141
4142	#if 1
4143
4144	#ifndef TC_FORCE_RELOCATION
4145	#define TC_FORCE_RELOCATION(fix) 0
4146	#endif
4147
4148	static void
4149	fixup_segment (segP, this_segment_type)
4150	segment_info_type * segP;
4151	segT this_segment_type;
4152	{
4153	fixS * fixP;
4154	symbolS *add_symbolP;
4155	symbolS *sub_symbolP;
4156	long add_number;
4157	int size;
4158	char *place;
4159	long where;
4160	char pcrel;
4161	fragS *fragP;
4162	segT add_symbol_segment = absolute_section;
4163
4164	for (fixP = segP->fix_root; fixP; fixP = fixP->fx_next)
4165	{
4166	fragP = fixP->fx_frag;
4167	know (fragP);
4168	where = fixP->fx_where;
4169	place = fragP->fr_literal + where;
4170	size = fixP->fx_size;
4171	add_symbolP = fixP->fx_addsy;
4172	sub_symbolP = fixP->fx_subsy;
4173	add_number = fixP->fx_offset;
4174	pcrel = fixP->fx_pcrel;
4175
4176	/* We want function-relative stabs to work on systems which
4177	may use a relaxing linker; thus we must handle the sym1-sym2
4178	fixups function-relative stabs generates.
4179
4180	Of course, if you actually enable relaxing in the linker, the
4181	line and block scoping information is going to be incorrect
4182	in some cases. The only way to really fix this is to support
4183	a reloc involving the difference of two symbols. */
4184	if (linkrelax
4185	&& (!sub_symbolP \|\| pcrel))
4186	continue;
4187
4188	#ifdef TC_I960
4189	if (fixP->fx_tcbit && SF_GET_CALLNAME (add_symbolP))
4190	{
4191	/* Relocation should be done via the associated 'bal' entry
4192	point symbol. */
4193
4194	if (!SF_GET_BALNAME (tc_get_bal_of_call (add_symbolP)))
4195	{
4196	as_bad_where (fixP->fx_file, fixP->fx_line,
4197	_("No 'bal' entry point for leafproc %s"),
4198	S_GET_NAME (add_symbolP));
4199	continue;
4200	}
4201	fixP->fx_addsy = add_symbolP = tc_get_bal_of_call (add_symbolP);
4202	}
4203	#endif
4204
4205	/* Make sure the symbols have been resolved; this may not have
4206	happened if these are expression symbols. */
4207	if (add_symbolP != NULL && ! add_symbolP->sy_resolved)
4208	resolve_symbol_value (add_symbolP);
4209
4210	if (add_symbolP != NULL)
4211	{
4212	/* If this fixup is against a symbol which has been equated
4213	to another symbol, convert it to the other symbol. */
4214	if (add_symbolP->sy_value.X_op == O_symbol
4215	&& (! S_IS_DEFINED (add_symbolP)
4216	\|\| S_IS_COMMON (add_symbolP)))
4217	{
4218	while (add_symbolP->sy_value.X_op == O_symbol
4219	&& (! S_IS_DEFINED (add_symbolP)
4220	\|\| S_IS_COMMON (add_symbolP)))
4221	{
4222	symbolS *n;
4223
4224	/* We must avoid looping, as that can occur with a
4225	badly written program. */
4226	n = add_symbolP->sy_value.X_add_symbol;
4227	if (n == add_symbolP)
4228	break;
4229	add_number += add_symbolP->sy_value.X_add_number;
4230	add_symbolP = n;
4231	}
4232	fixP->fx_addsy = add_symbolP;
4233	fixP->fx_offset = add_number;
4234	}
4235	}
4236
4237	if (sub_symbolP != NULL && ! sub_symbolP->sy_resolved)
4238	resolve_symbol_value (sub_symbolP);
4239
4240	if (add_symbolP != NULL
4241	&& add_symbolP->sy_mri_common)
4242	{
4243	know (add_symbolP->sy_value.X_op == O_symbol);
4244	add_number += S_GET_VALUE (add_symbolP);
4245	fixP->fx_offset = add_number;
4246	add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol;
4247	}
4248
4249	if (add_symbolP)
4250	add_symbol_segment = S_GET_SEGMENT (add_symbolP);
4251
4252	if (sub_symbolP)
4253	{
4254	if (add_symbolP == NULL \|\| add_symbol_segment == absolute_section)
4255	{
4256	if (add_symbolP != NULL)
4257	{
4258	add_number += S_GET_VALUE (add_symbolP);
4259	add_symbolP = NULL;
4260	fixP->fx_addsy = NULL;
4261	}
4262
4263	/* It's just -sym. */
4264	if (S_GET_SEGMENT (sub_symbolP) == absolute_section)
4265	{
4266	add_number -= S_GET_VALUE (sub_symbolP);
4267	fixP->fx_subsy = 0;
4268	fixP->fx_done = 1;
4269	}
4270	else
4271	{
4272	#ifndef TC_M68K
4273	as_bad_where (fixP->fx_file, fixP->fx_line,
4274	_("Negative of non-absolute symbol %s"),
4275	S_GET_NAME (sub_symbolP));
4276	#endif
4277	add_number -= S_GET_VALUE (sub_symbolP);
4278	} /* not absolute */
4279
4280	/* if sub_symbol is in the same segment that add_symbol
4281	and add_symbol is either in DATA, TEXT, BSS or ABSOLUTE. */
4282	}
4283	else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment
4284	&& SEG_NORMAL (add_symbol_segment))
4285	{
4286	/* Difference of 2 symbols from same segment. Can't
4287	make difference of 2 undefineds: 'value' means
4288	something different for N_UNDF. */
4289	#ifdef TC_I960
4290	/* Makes no sense to use the difference of 2 arbitrary symbols
4291	as the target of a call instruction. */
4292	if (fixP->fx_tcbit)
4293	as_bad_where (fixP->fx_file, fixP->fx_line,
4294	_("callj to difference of 2 symbols"));
4295	#endif /* TC_I960 */
4296	add_number += S_GET_VALUE (add_symbolP) -
4297	S_GET_VALUE (sub_symbolP);
4298	add_symbolP = NULL;
4299
4300	if (!TC_FORCE_RELOCATION (fixP))
4301	{
4302	fixP->fx_addsy = NULL;
4303	fixP->fx_subsy = NULL;
4304	fixP->fx_done = 1;
4305	#ifdef TC_M68K /* is this right? */
4306	pcrel = 0;
4307	fixP->fx_pcrel = 0;
4308	#endif
4309	}
4310	}
4311	else
4312	{
4313	/* Different segments in subtraction. */
4314	know (!(S_IS_EXTERNAL (sub_symbolP) && (S_GET_SEGMENT (sub_symbolP) == absolute_section)));
4315
4316	if ((S_GET_SEGMENT (sub_symbolP) == absolute_section))
4317	add_number -= S_GET_VALUE (sub_symbolP);
4318
4319	#ifdef DIFF_EXPR_OK
4320	else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type
4321	#if 0 /* Okay for 68k, at least... */
4322	&& !pcrel
4323	#endif
4324	)
4325	{
4326	/* Make it pc-relative. */
4327	add_number += (md_pcrel_from (fixP)
4328	- S_GET_VALUE (sub_symbolP));
4329	pcrel = 1;
4330	fixP->fx_pcrel = 1;
4331	sub_symbolP = 0;
4332	fixP->fx_subsy = 0;
4333	}
4334	#endif
4335	else
4336	{
4337	as_bad_where (fixP->fx_file, fixP->fx_line,
4338	_("Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %ld."),
4339	segment_name (S_GET_SEGMENT (sub_symbolP)),
4340	S_GET_NAME (sub_symbolP),
4341	(long) (fragP->fr_address + where));
4342	}
4343	}
4344	}
4345
4346	if (add_symbolP)
4347	{
4348	if (add_symbol_segment == this_segment_type && pcrel)
4349	{
4350	/* This fixup was made when the symbol's segment was
4351	SEG_UNKNOWN, but it is now in the local segment.
4352	So we know how to do the address without relocation. */
4353	#ifdef TC_I960
4354	/* reloc_callj() may replace a 'call' with a 'calls' or a 'bal',
4355	in which cases it modifies *fixP as appropriate. In the case
4356	of a 'calls', no further work is required, and *fixP has been
4357	set up to make the rest of the code below a no-op. */
4358	reloc_callj (fixP);
4359	#endif /* TC_I960 */
4360
4361	add_number += S_GET_VALUE (add_symbolP);
4362	add_number -= md_pcrel_from (fixP);
4363
4364	/* We used to do
4365	add_number -= segP->scnhdr.s_vaddr;
4366	if defined (TC_I386) \|\| defined (TE_LYNX). I now
4367	think that was an error propagated from the case when
4368	we are going to emit the relocation. If we are not
4369	going to emit the relocation, then we just want to
4370	set add_number to the difference between the symbols.
4371	This is a case that would only arise when there is a
4372	PC relative reference from a section other than .text
4373	to a symbol defined in the same section, and the
4374	reference is not relaxed. Since jump instructions on
4375	the i386 are relaxed, this could only arise with a
4376	call instruction. */
4377
4378	pcrel = 0; /* Lie. Don't want further pcrel processing. */
4379	if (!TC_FORCE_RELOCATION (fixP))
4380	{
4381	fixP->fx_addsy = NULL;
4382	fixP->fx_done = 1;
4383	}
4384	}
4385	else
4386	{
4387	switch (add_symbol_segment)
4388	{
4389	case absolute_section:
4390	#ifdef TC_I960
4391	/* See comment about reloc_callj() above. */
4392	reloc_callj (fixP);
4393	#endif /* TC_I960 */
4394	add_number += S_GET_VALUE (add_symbolP);
4395	add_symbolP = NULL;
4396
4397	if (!TC_FORCE_RELOCATION (fixP))
4398	{
4399	fixP->fx_addsy = NULL;
4400	fixP->fx_done = 1;
4401	}
4402	break;
4403	default:
4404
4405	#if defined(TC_A29K) \|\| (defined(TE_PE) && defined(TC_I386)) \|\| defined(TC_M88K) \|\| defined(TC_OR32)
4406	/* This really should be handled in the linker, but
4407	backward compatibility forbids. */
4408	add_number += S_GET_VALUE (add_symbolP);
4409	#else
4410	add_number += S_GET_VALUE (add_symbolP) +
4411	segment_info[S_GET_SEGMENT (add_symbolP)].scnhdr.s_paddr;
4412	#endif
4413	break;
4414
4415	case SEG_UNKNOWN:
4416	#ifdef TC_I960
4417	if ((int) fixP->fx_bit_fixP == 13)
4418	{
4419	/* This is a COBR instruction. They have only a
4420	13-bit displacement and are only to be used
4421	for local branches: flag as error, don't generate
4422	relocation. */
4423	as_bad_where (fixP->fx_file, fixP->fx_line,
4424	_("can't use COBR format with external label"));
4425	fixP->fx_addsy = NULL;
4426	fixP->fx_done = 1;
4427	continue;
4428	}
4429	#endif /* TC_I960 */
4430	#if ((defined (TC_I386) \|\| defined (TE_LYNX) \|\| defined (TE_AUX)) && !defined(TE_PE)) \|\| defined (COFF_COMMON_ADDEND)
4431	/* 386 COFF uses a peculiar format in which the
4432	value of a common symbol is stored in the .text
4433	segment (I've checked this on SVR3.2 and SCO
4434	3.2.2) Ian Taylor <ian@cygnus.com>. */
4435	/* This is also true for 68k COFF on sysv machines
4436	(Checked on Motorola sysv68 R3V6 and R3V7.1, and also on
4437	UNIX System V/M68000, Release 1.0 from ATT/Bell Labs)
4438	Philippe De Muyter <phdm@info.ucl.ac.be>. */
4439	if (S_IS_COMMON (add_symbolP))
4440	add_number += S_GET_VALUE (add_symbolP);
4441	#endif
4442	break;
4443
4444	}
4445	}
4446	}
4447
4448	if (pcrel)
4449	{
4450	#if !defined(TC_M88K) && !(defined(TE_PE) && defined(TC_I386)) && !defined(TC_A29K) && !defined(TC_OR32)
4451	/* This adjustment is not correct on the m88k, for which the
4452	linker does all the computation. */
4453	add_number -= md_pcrel_from (fixP);
4454	#endif
4455	if (add_symbolP == 0)
4456	fixP->fx_addsy = &abs_symbol;
4457	#if defined (TC_I386) \|\| defined (TE_LYNX) \|\| defined (TC_I960) \|\| defined (TC_M68K)
4458	/* On the 386 we must adjust by the segment vaddr as well.
4459	Ian Taylor.
4460
4461	I changed the i960 to work this way as well. This is
4462	compatible with the current GNU linker behaviour. I do
4463	not know what other i960 COFF assemblers do. This is not
4464	a common case: normally, only assembler code will contain
4465	a PC relative reloc, and only branches which do not
4466	originate in the .text section will have a non-zero
4467	address.
4468
4469	I changed the m68k to work this way as well. This will
4470	break existing PC relative relocs from sections which do
4471	not start at address 0, but it will make ld -r work.
4472	Ian Taylor, 4 Oct 96. */
4473
4474	add_number -= segP->scnhdr.s_vaddr;
4475	#endif
4476	}
4477
4478	md_apply_fix3 (fixP, (valueT *) & add_number, this_segment_type);
4479
4480	if (!fixP->fx_bit_fixP && ! fixP->fx_no_overflow)
4481	{
4482	#ifndef TC_M88K
4483	/* The m88k uses the offset field of the reloc to get around
4484	this problem. */
4485	if ((size == 1
4486	&& ((add_number & ~0xFF)
4487	\|\| (fixP->fx_signed && (add_number & 0x80)))
4488	&& ((add_number & ~0xFF) != (-1 & ~0xFF)
4489	\|\| (add_number & 0x80) == 0))
4490	\|\| (size == 2
4491	&& ((add_number & ~0xFFFF)
4492	\|\| (fixP->fx_signed && (add_number & 0x8000)))
4493	&& ((add_number & ~0xFFFF) != (-1 & ~0xFFFF)
4494	\|\| (add_number & 0x8000) == 0)))
4495	{
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));
4500	}
4501	#endif
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
4506	the 68k. */
4507	if (!flag_signed_overflow_ok
4508	&& size == 2
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"),
4512	(long) add_number,
4513	(unsigned long) (fragP->fr_address + where));
4514	#endif
4515	}
4516	}
4517	}
4518
4519	#endif
4520
4521	/* The first entry in a .stab section is special. */
4522
4523	void
4524	obj_coff_init_stab_section (seg)
4525	segT seg;
4526	{
4527	char *file;
4528	char *p;
4529	char *stabstr_name;
4530	unsigned int stroff;
4531
4532	/* Make space for this first symbol. */
4533	p = frag_more (12);
4534	/* Zero it out. */
4535	memset (p, 0, 12);
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);
4541	know (stroff == 1);
4542	md_number_to_chars (p, stroff, 4);
4543	}
4544
4545	/* Fill in the counts in the first entry in a .stab section. */
4546
4547	static void
4548	adjust_stab_section(abfd, seg)
4549	bfd *abfd;
4550	segT seg;
4551	{
4552	segT stabstrseg = SEG_UNKNOWN;
4553	const char secname, name2;
4554	char *name;
4555	char *p = NULL;
4556	int i, strsz = 0, nsyms;
4557	fragS *frag = segment_info[seg].frchainP->frch_root;
4558
4559	/* Look for the associated string table section. */
4560
4561	secname = segment_info[seg].name;
4562	name = (char *) alloca (strlen (secname) + 4);
4563	strcpy (name, secname);
4564	strcat (name, "str");
4565
4566	for (i = SEG_E0; i < SEG_UNKNOWN; i++)
4567	{
4568	name2 = segment_info[i].name;
4569	if (name2 != NULL && strncmp(name2, name, 8) == 0)
4570	{
4571	stabstrseg = i;
4572	break;
4573	}
4574	}
4575
4576	/* If we found the section, get its size. */
4577	if (stabstrseg != SEG_UNKNOWN)
4578	strsz = size_section (abfd, stabstrseg);
4579
4580	nsyms = size_section (abfd, seg) / 12 - 1;
4581
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;
4586	assert (frag != 0);
4587	p = frag->fr_literal;
4588	assert (p != 0);
4589
4590	/* Write in the number of stab symbols and the size of the string
4591	table. */
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);
4594	}
4595
4596	#endif /* not BFD_ASSEMBLER */
4597
4598	const pseudo_typeS coff_pseudo_table[] =
4599	{
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},
4607	#endif
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},
4629	#else
4630	{"optim", s_ignore, 0}, /* For sun386i cc (?) */
4631	#endif
4632	{"version", s_ignore, 0},
4633	{"ABORT", s_abort, 0},
4634	#if defined( TC_M88K ) \|\| defined ( TC_TIC4X )
4635	/* The m88k and tic4x uses sdef instead of def. */
4636	{"sdef", obj_coff_def, 0},
4637	#endif
4638	{NULL, NULL, 0} /* end sentinel */
4639	}; /* coff_pseudo_table */
4640
4641
4642	#ifdef BFD_ASSEMBLER
4643
4644	/* Support for a COFF emulation. */
4645
4646	static void coff_pop_insert PARAMS ((void));
4647	static int coff_separate_stab_sections PARAMS ((void));
4648
4649	static void
4650	coff_pop_insert ()
4651	{
4652	pop_insert (coff_pseudo_table);
4653	}
4654
4655	static int
4656	coff_separate_stab_sections ()
4657	{
4658	return 1;
4659	}
4660
4661	const struct format_ops coff_format_ops =
4662	{
4663	bfd_target_coff_flavour,
4664	0, /* dfl_leading_underscore */
4665	1, /* emit_section_symbols */
4666	0, /* begin */
4667	c_dot_file_symbol,
4668	coff_frob_symbol,
4669	0, /* frob_file */
4670	0, /* frob_file_before_adjust */
4671	0, /* frob_file_before_fix */
4672	coff_frob_file_after_relocs,
4673	0, /* s_get_size */
4674	0, /* s_set_size */
4675	0, /* s_get_align */
4676	0, /* s_set_align */
4677	0, /* s_get_other */
4678	0, /* s_set_other */
4679	0, /* s_get_desc */
4680	0, /* s_set_desc */
4681	0, /* s_get_type */
4682	0, /* s_set_type */
4683	0, /* copy_symbol_attributes */
4684	0, /* generate_asm_lineno */
4685	0, /* process_stab */
4686	coff_separate_stab_sections,
4687	obj_coff_init_stab_section,
4688	0, /* sec_sym_ok_for_reloc */
4689	coff_pop_insert,
4690	0, /* ecoff_set_ext */
4691	coff_obj_read_begin_hook,
4692	coff_obj_symbol_new_hook
4693	};
4694
4695	#endif

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