1 /* write.c - emit .o file
2 Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999
3 Free Software Foundation, Inc.
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 /* This thing should be set up to do byteordering correctly. But... */
27 #include "output-file.h"
29 /* This looks like a good idea. Let's try turning it on always, for now. */
30 #undef BFD_FAST_SECTION_FILL
31 #define BFD_FAST_SECTION_FILL
33 /* The NOP_OPCODE is for the alignment fill value. Fill it with a nop
34 instruction so that the disassembler does not choke on it. */
36 #define NOP_OPCODE 0x00
39 #ifndef TC_ADJUST_RELOC_COUNT
40 #define TC_ADJUST_RELOC_COUNT(FIXP,COUNT)
43 #ifndef TC_FORCE_RELOCATION
44 #define TC_FORCE_RELOCATION(FIXP) 0
47 #ifndef TC_FORCE_RELOCATION_SECTION
48 #define TC_FORCE_RELOCATION_SECTION(FIXP,SEG) TC_FORCE_RELOCATION(FIXP)
51 #ifndef MD_PCREL_FROM_SECTION
52 #define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from(FIXP)
55 #ifndef WORKING_DOT_WORD
56 extern CONST int md_short_jump_size;
57 extern CONST int md_long_jump_size;
60 int symbol_table_frozen;
61 void print_fixup PARAMS ((fixS *));
64 static void renumber_sections PARAMS ((bfd *, asection *, PTR));
66 /* We generally attach relocs to frag chains. However, after we have
67 chained these all together into a segment, any relocs we add after
68 that must be attached to a segment. This will include relocs added
69 in md_estimate_size_for_relax, for example. */
70 static int frags_chained = 0;
76 struct frag *text_frag_root;
77 struct frag *data_frag_root;
78 struct frag *bss_frag_root;
80 struct frag *text_last_frag; /* Last frag in segment. */
81 struct frag *data_last_frag; /* Last frag in segment. */
82 static struct frag *bss_last_frag; /* Last frag in segment. */
86 static object_headers headers;
89 long string_byte_count;
90 char *next_object_file_charP; /* Tracks object file bytes. */
93 int magic_number_for_object_file = DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE;
96 #endif /* BFD_ASSEMBLER */
101 static fixS *fix_new_internal PARAMS ((fragS *, int where, int size,
102 symbolS *add, symbolS *sub,
103 offsetT offset, int pcrel,
104 bfd_reloc_code_real_type r_type));
106 static fixS *fix_new_internal PARAMS ((fragS *, int where, int size,
107 symbolS *add, symbolS *sub,
108 offsetT offset, int pcrel,
111 #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS))
112 static long fixup_segment PARAMS ((fixS * fixP, segT this_segment_type));
114 static relax_addressT relax_align PARAMS ((relax_addressT addr, int align));
115 #if defined (BFD_ASSEMBLER) || ! defined (BFD)
116 static fragS *chain_frchains_together_1 PARAMS ((segT, struct frchain *));
119 static void chain_frchains_together PARAMS ((bfd *, segT, PTR));
120 static void cvt_frag_to_fill PARAMS ((segT, fragS *));
121 static void relax_and_size_seg PARAMS ((bfd *, asection *, PTR));
122 static void adjust_reloc_syms PARAMS ((bfd *, asection *, PTR));
123 static void write_relocs PARAMS ((bfd *, asection *, PTR));
124 static void write_contents PARAMS ((bfd *, asection *, PTR));
125 static void set_symtab PARAMS ((void));
127 #if defined (BFD_ASSEMBLER) || (! defined (BFD) && ! defined (OBJ_AOUT))
128 static void merge_data_into_text PARAMS ((void));
130 #if ! defined (BFD_ASSEMBLER) && ! defined (BFD)
131 static void cvt_frag_to_fill PARAMS ((object_headers *, segT, fragS *));
132 static void remove_subsegs PARAMS ((frchainS *, int, fragS **, fragS **));
133 static void relax_and_size_all_segments PARAMS ((void));
139 * Create a fixS in obstack 'notes'.
142 fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel,
144 fragS *frag; /* Which frag? */
145 int where; /* Where in that frag? */
146 int size; /* 1, 2, or 4 usually. */
147 symbolS *add_symbol; /* X_add_symbol. */
148 symbolS *sub_symbol; /* X_op_symbol. */
149 offsetT offset; /* X_add_number. */
150 int pcrel; /* TRUE if PC-relative relocation. */
152 bfd_reloc_code_real_type r_type; /* Relocation type */
154 int r_type; /* Relocation type */
161 fixP = (fixS *) obstack_alloc (¬es, sizeof (fixS));
163 fixP->fx_frag = frag;
164 fixP->fx_where = where;
165 fixP->fx_size = size;
166 /* We've made fx_size a narrow field; check that it's wide enough. */
167 if (fixP->fx_size != size)
169 as_bad (_("field fx_size too small to hold %d"), size);
172 fixP->fx_addsy = add_symbol;
173 fixP->fx_subsy = sub_symbol;
174 fixP->fx_offset = offset;
175 fixP->fx_pcrel = pcrel;
177 #if defined(NEED_FX_R_TYPE) || defined (BFD_ASSEMBLER)
178 fixP->fx_r_type = r_type;
180 fixP->fx_im_disp = 0;
181 fixP->fx_pcrel_adjust = 0;
182 fixP->fx_bit_fixP = 0;
183 fixP->fx_addnumber = 0;
186 fixP->fx_no_overflow = 0;
190 fixP->fx_cgen.insn = NULL;
191 fixP->fx_cgen.opinfo = 0;
195 TC_INIT_FIX_DATA(fixP);
198 as_where (&fixP->fx_file, &fixP->fx_line);
200 /* Usually, we want relocs sorted numerically, but while
201 comparing to older versions of gas that have relocs
202 reverse sorted, it is convenient to have this compile
203 time option. xoxorich. */
208 fixS **seg_fix_rootP = (frags_chained
209 ? &seg_info (now_seg)->fix_root
210 : &frchain_now->fix_root);
211 fixS **seg_fix_tailP = (frags_chained
212 ? &seg_info (now_seg)->fix_tail
213 : &frchain_now->fix_tail);
216 #ifdef REVERSE_SORT_RELOCS
218 fixP->fx_next = *seg_fix_rootP;
219 *seg_fix_rootP = fixP;
221 #else /* REVERSE_SORT_RELOCS */
223 fixP->fx_next = NULL;
226 (*seg_fix_tailP)->fx_next = fixP;
228 *seg_fix_rootP = fixP;
229 *seg_fix_tailP = fixP;
231 #endif /* REVERSE_SORT_RELOCS */
238 /* Create a fixup relative to a symbol (plus a constant). */
241 fix_new (frag, where, size, add_symbol, offset, pcrel, r_type)
242 fragS *frag; /* Which frag? */
243 int where; /* Where in that frag? */
244 int size; /* 1, 2, or 4 usually. */
245 symbolS *add_symbol; /* X_add_symbol. */
246 offsetT offset; /* X_add_number. */
247 int pcrel; /* TRUE if PC-relative relocation. */
249 bfd_reloc_code_real_type r_type; /* Relocation type */
251 int r_type; /* Relocation type */
254 return fix_new_internal (frag, where, size, add_symbol,
255 (symbolS *) NULL, offset, pcrel, r_type);
258 /* Create a fixup for an expression. Currently we only support fixups
259 for difference expressions. That is itself more than most object
260 file formats support anyhow. */
263 fix_new_exp (frag, where, size, exp, pcrel, r_type)
264 fragS *frag; /* Which frag? */
265 int where; /* Where in that frag? */
266 int size; /* 1, 2, or 4 usually. */
267 expressionS *exp; /* Expression. */
268 int pcrel; /* TRUE if PC-relative relocation. */
270 bfd_reloc_code_real_type r_type; /* Relocation type */
272 int r_type; /* Relocation type */
285 /* This comes up when _GLOBAL_OFFSET_TABLE_+(.-L0) is read, if
286 the difference expression cannot immediately be reduced. */
288 symbolS *stmp = make_expr_symbol (exp);
289 exp->X_op = O_symbol;
290 exp->X_op_symbol = 0;
291 exp->X_add_symbol = stmp;
292 exp->X_add_number = 0;
293 return fix_new_exp (frag, where, size, exp, pcrel, r_type);
297 add = exp->X_add_symbol;
298 off = exp->X_add_number;
300 #if defined(BFD_ASSEMBLER)
301 r_type = BFD_RELOC_RVA;
303 #if defined(TC_RVA_RELOC)
304 r_type = TC_RVA_RELOC;
306 as_fatal(_("rva not supported"));
312 sub = exp->X_add_symbol;
313 off = exp->X_add_number;
317 sub = exp->X_op_symbol;
320 add = exp->X_add_symbol;
323 off = exp->X_add_number;
327 add = make_expr_symbol (exp);
331 return fix_new_internal (frag, where, size, add, sub, off,
335 /* Append a string onto another string, bumping the pointer along. */
337 append (charPP, fromP, length)
340 unsigned long length;
342 /* Don't trust memcpy() of 0 chars. */
346 memcpy (*charPP, fromP, length);
350 #ifndef BFD_ASSEMBLER
351 int section_alignment[SEG_MAXIMUM_ORDINAL];
355 * This routine records the largest alignment seen for each segment.
356 * If the beginning of the segment is aligned on the worst-case
357 * boundary, all of the other alignments within it will work. At
358 * least one object format really uses this info.
361 record_alignment (seg, align)
362 /* Segment to which alignment pertains */
364 /* Alignment, as a power of 2 (e.g., 1 => 2-byte boundary, 2 => 4-byte
368 if (seg == absolute_section)
371 if ((unsigned int) align > bfd_get_section_alignment (stdoutput, seg))
372 bfd_set_section_alignment (stdoutput, seg, align);
374 if (align > section_alignment[(int) seg])
375 section_alignment[(int) seg] = align;
381 /* Reset the section indices after removing the gas created sections. */
384 renumber_sections (abfd, sec, countparg)
385 bfd *abfd ATTRIBUTE_UNUSED;
389 int *countp = (int *) countparg;
391 sec->index = *countp;
395 #endif /* defined (BFD_ASSEMBLER) */
397 #if defined (BFD_ASSEMBLER) || ! defined (BFD)
400 chain_frchains_together_1 (section, frchp)
402 struct frchain *frchp;
404 fragS dummy, *prev_frag = &dummy;
406 fixS fix_dummy, *prev_fix = &fix_dummy;
409 for (; frchp && frchp->frch_seg == section; frchp = frchp->frch_next)
411 prev_frag->fr_next = frchp->frch_root;
412 prev_frag = frchp->frch_last;
413 assert (prev_frag->fr_type != 0);
415 if (frchp->fix_root != (fixS *) NULL)
417 if (seg_info (section)->fix_root == (fixS *) NULL)
418 seg_info (section)->fix_root = frchp->fix_root;
419 prev_fix->fx_next = frchp->fix_root;
420 seg_info (section)->fix_tail = frchp->fix_tail;
421 prev_fix = frchp->fix_tail;
425 assert (prev_frag->fr_type != 0);
426 prev_frag->fr_next = 0;
435 chain_frchains_together (abfd, section, xxx)
436 bfd *abfd ATTRIBUTE_UNUSED;
438 PTR xxx ATTRIBUTE_UNUSED;
440 segment_info_type *info;
442 /* BFD may have introduced its own sections without using
443 subseg_new, so it is possible that seg_info is NULL. */
444 info = seg_info (section);
445 if (info != (segment_info_type *) NULL)
446 info->frchainP->frch_last
447 = chain_frchains_together_1 (section, info->frchainP);
449 /* Now that we've chained the frags together, we must add new fixups
450 to the segment, not to the frag chain. */
456 #if !defined (BFD) && !defined (BFD_ASSEMBLER)
459 remove_subsegs (head, seg, root, last)
465 *root = head->frch_root;
466 *last = chain_frchains_together_1 (seg, head);
471 #if defined (BFD_ASSEMBLER) || !defined (BFD)
475 cvt_frag_to_fill (sec, fragP)
480 cvt_frag_to_fill (headersP, sec, fragP)
481 object_headers *headersP;
486 switch (fragP->fr_type)
493 HANDLE_ALIGN (fragP);
495 know (fragP->fr_next != NULL);
496 fragP->fr_offset = (fragP->fr_next->fr_address
498 - fragP->fr_fix) / fragP->fr_var;
499 if (fragP->fr_offset < 0)
501 as_bad_where (fragP->fr_file, fragP->fr_line,
502 _("attempt to .org/.space backwards? (%ld)"),
503 (long) fragP->fr_offset);
505 fragP->fr_type = rs_fill;
513 valueT value = S_GET_VALUE (fragP->fr_symbol);
516 size = output_leb128 (fragP->fr_literal + fragP->fr_fix, value,
519 fragP->fr_fix += size;
520 fragP->fr_type = rs_fill;
522 fragP->fr_offset = 0;
523 fragP->fr_symbol = NULL;
528 eh_frame_convert_frag (fragP);
531 case rs_machine_dependent:
533 md_convert_frag (stdoutput, sec, fragP);
535 md_convert_frag (headersP, sec, fragP);
538 assert (fragP->fr_next == NULL
539 || ((offsetT) (fragP->fr_next->fr_address - fragP->fr_address)
543 * After md_convert_frag, we make the frag into a ".space 0".
544 * Md_convert_frag() should set up any fixSs and constants
550 #ifndef WORKING_DOT_WORD
553 struct broken_word *lie;
555 if (fragP->fr_subtype)
557 fragP->fr_fix += md_short_jump_size;
558 for (lie = (struct broken_word *) (fragP->fr_symbol);
559 lie && lie->dispfrag == fragP;
560 lie = lie->next_broken_word)
562 fragP->fr_fix += md_long_jump_size;
570 BAD_CASE (fragP->fr_type);
575 #endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */
579 relax_and_size_seg (abfd, sec, xxx)
582 PTR xxx ATTRIBUTE_UNUSED;
586 segment_info_type *seginfo;
588 valueT size, newsize;
590 subseg_change (sec, 0);
592 flags = bfd_get_section_flags (abfd, sec);
594 seginfo = seg_info (sec);
595 if (seginfo && seginfo->frchainP)
597 relax_segment (seginfo->frchainP->frch_root, sec);
598 for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next)
599 cvt_frag_to_fill (sec, fragp);
600 for (fragp = seginfo->frchainP->frch_root;
602 fragp = fragp->fr_next)
603 /* walk to last elt */;
604 size = fragp->fr_address + fragp->fr_fix;
609 if (size > 0 && ! seginfo->bss)
610 flags |= SEC_HAS_CONTENTS;
612 /* @@ This is just an approximation. */
613 if (seginfo && seginfo->fix_root)
617 x = bfd_set_section_flags (abfd, sec, flags);
620 newsize = md_section_align (sec, size);
621 x = bfd_set_section_size (abfd, sec, newsize);
624 /* If the size had to be rounded up, add some padding in the last
626 assert (newsize >= size);
629 fragS *last = seginfo->frchainP->frch_last;
630 fragp = seginfo->frchainP->frch_root;
631 while (fragp->fr_next != last)
632 fragp = fragp->fr_next;
633 last->fr_address = size;
634 fragp->fr_offset += newsize - size;
637 #ifdef tc_frob_section
638 tc_frob_section (sec);
640 #ifdef obj_frob_section
641 obj_frob_section (sec);
647 dump_section_relocs (abfd, sec, stream_)
652 FILE *stream = (FILE *) stream_;
653 segment_info_type *seginfo = seg_info (sec);
654 fixS *fixp = seginfo->fix_root;
659 fprintf (stream, "sec %s relocs:\n", sec->name);
662 symbolS *s = fixp->fx_addsy;
665 fprintf (stream, " %08x: %s(%s", fixp, S_GET_NAME (s),
666 s->bsym->section->name);
667 if (s->bsym->flags & BSF_SECTION_SYM)
669 fprintf (stream, " section sym");
671 fprintf (stream, "+%x", S_GET_VALUE (s));
674 fprintf (stream, "+%x", S_GET_VALUE (s));
675 fprintf (stream, ")+%x\n", fixp->fx_offset);
678 fprintf (stream, " %08x: type %d no sym\n", fixp, fixp->fx_r_type);
679 fixp = fixp->fx_next;
683 #define dump_section_relocs(ABFD,SEC,STREAM) ((void) 0)
686 #ifndef EMIT_SECTION_SYMBOLS
687 #define EMIT_SECTION_SYMBOLS 1
691 adjust_reloc_syms (abfd, sec, xxx)
692 bfd *abfd ATTRIBUTE_UNUSED;
694 PTR xxx ATTRIBUTE_UNUSED;
696 segment_info_type *seginfo = seg_info (sec);
702 dump_section_relocs (abfd, sec, stderr);
704 for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next)
707 else if (fixp->fx_addsy)
713 fprintf (stderr, "\n\nadjusting fixup:\n");
717 sym = fixp->fx_addsy;
719 /* All symbols should have already been resolved at this
720 point. It is possible to see unresolved expression
721 symbols, though, since they are not in the regular symbol
724 resolve_symbol_value (sym, 1);
726 if (fixp->fx_subsy != NULL)
727 resolve_symbol_value (fixp->fx_subsy, 1);
729 /* If this symbol is equated to an undefined symbol, convert
730 the fixup to being against that symbol. */
731 if (sym != NULL && symbol_equated_p (sym)
732 && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym)))
734 fixp->fx_offset += symbol_get_value_expression (sym)->X_add_number;
735 sym = symbol_get_value_expression (sym)->X_add_symbol;
736 fixp->fx_addsy = sym;
739 if (sym != NULL && symbol_mri_common_p (sym))
741 /* These symbols are handled specially in fixup_segment. */
745 symsec = S_GET_SEGMENT (sym);
750 if (bfd_is_abs_section (symsec))
752 /* The fixup_segment routine will not use this symbol in a
753 relocation unless TC_FORCE_RELOCATION returns 1. */
754 if (TC_FORCE_RELOCATION (fixp))
756 symbol_mark_used_in_reloc (fixp->fx_addsy);
757 #ifdef UNDEFINED_DIFFERENCE_OK
758 if (fixp->fx_subsy != NULL)
759 symbol_mark_used_in_reloc (fixp->fx_subsy);
765 /* If it's one of these sections, assume the symbol is
766 definitely going to be output. The code in
767 md_estimate_size_before_relax in tc-mips.c uses this test
768 as well, so if you change this code you should look at that
770 if (bfd_is_und_section (symsec)
771 || bfd_is_com_section (symsec))
773 symbol_mark_used_in_reloc (fixp->fx_addsy);
774 #ifdef UNDEFINED_DIFFERENCE_OK
775 /* We have the difference of an undefined symbol and some
776 other symbol. Make sure to mark the other symbol as used
777 in a relocation so that it will always be output. */
779 symbol_mark_used_in_reloc (fixp->fx_subsy);
784 /* Don't try to reduce relocs which refer to non-local symbols
785 in .linkonce sections. It can lead to confusion when a
786 debugging section refers to a .linkonce section. I hope
787 this will always be correct. */
788 if (symsec != sec && ! S_IS_LOCAL (sym))
794 if ((bfd_get_section_flags (stdoutput, symsec) & SEC_LINK_ONCE)
799 /* The GNU toolchain uses an extension for ELF: a section
800 beginning with the magic string .gnu.linkonce is a
802 if (strncmp (segment_name (symsec), ".gnu.linkonce",
803 sizeof ".gnu.linkonce" - 1) == 0)
809 symbol_mark_used_in_reloc (fixp->fx_addsy);
810 #ifdef UNDEFINED_DIFFERENCE_OK
811 if (fixp->fx_subsy != NULL)
812 symbol_mark_used_in_reloc (fixp->fx_subsy);
818 /* Since we're reducing to section symbols, don't attempt to reduce
819 anything that's already using one. */
820 if (symbol_section_p (sym))
822 symbol_mark_used_in_reloc (fixp->fx_addsy);
827 /* We can never adjust a reloc against a weak symbol. If we
828 did, and the weak symbol was overridden by a real symbol
829 somewhere else, then our relocation would be pointing at
830 the wrong area of memory. */
833 symbol_mark_used_in_reloc (fixp->fx_addsy);
838 /* Is there some other reason we can't adjust this one? (E.g.,
839 call/bal links in i960-bout symbols.) */
840 #ifdef obj_fix_adjustable
841 if (! obj_fix_adjustable (fixp))
843 symbol_mark_used_in_reloc (fixp->fx_addsy);
848 /* Is there some other (target cpu dependent) reason we can't adjust
849 this one? (E.g. relocations involving function addresses on
851 #ifdef tc_fix_adjustable
852 if (! tc_fix_adjustable (fixp))
854 symbol_mark_used_in_reloc (fixp->fx_addsy);
859 /* If the section symbol isn't going to be output, the relocs
860 at least should still work. If not, figure out what to do
861 when we run into that case.
863 We refetch the segment when calling section_symbol, rather
864 than using symsec, because S_GET_VALUE may wind up changing
865 the section when it calls resolve_symbol_value. */
866 fixp->fx_offset += S_GET_VALUE (sym);
867 fixp->fx_addsy = section_symbol (S_GET_SEGMENT (sym));
868 symbol_mark_used_in_reloc (fixp->fx_addsy);
873 #if 1/*def RELOC_REQUIRES_SYMBOL*/
876 /* There was no symbol required by this relocation. However,
877 BFD doesn't really handle relocations without symbols well.
878 (At least, the COFF support doesn't.) So for now we fake up
879 a local symbol in the absolute section. */
881 fixp->fx_addsy = section_symbol (absolute_section);
882 /* fixp->fx_addsy->sy_used_in_reloc = 1; */
886 dump_section_relocs (abfd, sec, stderr);
890 write_relocs (abfd, sec, xxx)
893 PTR xxx ATTRIBUTE_UNUSED;
895 segment_info_type *seginfo = seg_info (sec);
902 /* If seginfo is NULL, we did not create this section; don't do
907 fixup_segment (seginfo->fix_root, sec);
910 for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next)
913 #ifndef RELOC_EXPANSION_POSSIBLE
914 /* Set up reloc information as well. */
915 relocs = (arelent **) xmalloc (n * sizeof (arelent *));
916 memset ((char*)relocs, 0, n * sizeof (arelent*));
919 for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next)
922 bfd_reloc_status_type s;
931 /* If this is an undefined symbol which was equated to another
932 symbol, then use generate the reloc against the latter symbol
933 rather than the former. */
934 sym = fixp->fx_addsy;
935 while (symbol_equated_p (sym)
936 && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym)))
940 /* We must avoid looping, as that can occur with a badly
942 n = symbol_get_value_expression (sym)->X_add_symbol;
945 fixp->fx_offset += symbol_get_value_expression (sym)->X_add_number;
948 fixp->fx_addsy = sym;
950 reloc = tc_gen_reloc (sec, fixp);
958 /* This test is triggered inappropriately for the SH. */
959 if (fixp->fx_where + fixp->fx_size
960 > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset)
964 s = bfd_install_relocation (stdoutput, reloc,
965 fixp->fx_frag->fr_literal,
966 fixp->fx_frag->fr_address,
972 case bfd_reloc_overflow:
973 as_bad_where (fixp->fx_file, fixp->fx_line, _("relocation overflow"));
975 case bfd_reloc_outofrange:
976 as_bad_where (fixp->fx_file, fixp->fx_line, _("relocation out of range"));
979 as_fatal (_("%s:%u: bad return from bfd_install_relocation: %x"),
980 fixp->fx_file, fixp->fx_line, s);
985 n = n * MAX_RELOC_EXPANSION;
986 /* Set up reloc information as well. */
987 relocs = (arelent **) xmalloc (n * sizeof (arelent *));
990 for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next)
994 bfd_reloc_status_type s;
1004 /* If this is an undefined symbol which was equated to another
1005 symbol, then use generate the reloc against the latter symbol
1006 rather than the former. */
1007 sym = fixp->fx_addsy;
1008 while (symbol_equated_p (sym)
1009 && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym)))
1010 sym = symbol_get_value_expression (sym)->X_add_symbol;
1011 fixp->fx_addsy = sym;
1013 reloc = tc_gen_reloc (sec, fixp);
1015 for (j = 0; reloc[j]; j++)
1017 relocs[i++] = reloc[j];
1020 data = fixp->fx_frag->fr_literal + fixp->fx_where;
1021 if (fixp->fx_where + fixp->fx_size
1022 > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset)
1023 as_bad_where (fixp->fx_file, fixp->fx_line,
1024 _("internal error: fixup not contained within frag"));
1025 for (j = 0; reloc[j]; j++)
1027 s = bfd_install_relocation (stdoutput, reloc[j],
1028 fixp->fx_frag->fr_literal,
1029 fixp->fx_frag->fr_address,
1035 case bfd_reloc_overflow:
1036 as_bad_where (fixp->fx_file, fixp->fx_line,
1037 _("relocation overflow"));
1040 as_fatal (_("%s:%u: bad return from bfd_install_relocation"),
1041 fixp->fx_file, fixp->fx_line);
1052 sympp = bfd_get_outsymbols (stdoutput);
1053 nsyms = bfd_get_symcount (stdoutput);
1054 for (i = 0; i < n; i++)
1055 if (((*relocs[i]->sym_ptr_ptr)->flags & BSF_SECTION_SYM) == 0)
1057 for (j = 0; j < nsyms; j++)
1058 if (sympp[j] == *relocs[i]->sym_ptr_ptr)
1067 bfd_set_reloc (stdoutput, sec, relocs, n);
1069 bfd_set_section_flags (abfd, sec,
1070 (bfd_get_section_flags (abfd, sec)
1071 & (flagword) ~SEC_RELOC));
1078 fprintf (stderr, "relocs for sec %s\n", sec->name);
1079 for (i = 0; i < n; i++)
1082 s = *r->sym_ptr_ptr;
1083 fprintf (stderr, " reloc %2d @%08x off %4x : sym %-10s addend %x\n",
1084 i, r, r->address, s->name, r->addend);
1091 write_contents (abfd, sec, xxx)
1092 bfd *abfd ATTRIBUTE_UNUSED;
1094 PTR xxx ATTRIBUTE_UNUSED;
1096 segment_info_type *seginfo = seg_info (sec);
1097 unsigned long offset = 0;
1100 /* Write out the frags. */
1102 || ! (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS))
1105 for (f = seginfo->frchainP->frch_root;
1110 unsigned long fill_size;
1114 assert (f->fr_type == rs_fill);
1117 x = bfd_set_section_contents (stdoutput, sec,
1118 f->fr_literal, (file_ptr) offset,
1119 (bfd_size_type) f->fr_fix);
1122 bfd_perror (stdoutput->filename);
1123 as_perror (_("FATAL: Can't write %s"), stdoutput->filename);
1124 exit (EXIT_FAILURE);
1126 offset += f->fr_fix;
1128 fill_literal = f->fr_literal + f->fr_fix;
1129 fill_size = f->fr_var;
1130 count = f->fr_offset;
1131 assert (count >= 0);
1132 if (fill_size && count)
1135 if (fill_size > sizeof(buf))
1137 /* Do it the old way. Can this ever happen? */
1140 x = bfd_set_section_contents (stdoutput, sec,
1143 (bfd_size_type) fill_size);
1146 bfd_perror (stdoutput->filename);
1147 as_perror (_("FATAL: Can't write %s"), stdoutput->filename);
1148 exit (EXIT_FAILURE);
1150 offset += fill_size;
1155 /* Build a buffer full of fill objects and output it as
1156 often as necessary. This saves on the overhead of
1157 potentially lots of bfd_set_section_contents calls. */
1161 n_per_buf = sizeof (buf);
1162 memset (buf, *fill_literal, n_per_buf);
1167 n_per_buf = sizeof(buf)/fill_size;
1168 for (i = n_per_buf, bufp = buf; i; i--, bufp += fill_size)
1169 memcpy(bufp, fill_literal, fill_size);
1171 for (; count > 0; count -= n_per_buf)
1173 n_per_buf = n_per_buf > count ? count : n_per_buf;
1174 x = bfd_set_section_contents (stdoutput, sec,
1175 buf, (file_ptr) offset,
1176 (bfd_size_type) n_per_buf * fill_size);
1178 as_fatal (_("Cannot write to output file."));
1179 offset += n_per_buf * fill_size;
1187 #if defined(BFD_ASSEMBLER) || (!defined (BFD) && !defined(OBJ_AOUT))
1189 merge_data_into_text ()
1191 #if defined(BFD_ASSEMBLER) || defined(MANY_SEGMENTS)
1192 seg_info (text_section)->frchainP->frch_last->fr_next =
1193 seg_info (data_section)->frchainP->frch_root;
1194 seg_info (text_section)->frchainP->frch_last =
1195 seg_info (data_section)->frchainP->frch_last;
1196 seg_info (data_section)->frchainP = 0;
1200 text_last_frag->fr_next = data_frag_root;
1201 text_last_frag = data_last_frag;
1202 data_last_frag = NULL;
1203 data_frag_root = NULL;
1206 for (tmp = text_fix_root; tmp->fx_next; tmp = tmp->fx_next);;
1207 tmp->fx_next = data_fix_root;
1208 text_fix_tail = data_fix_tail;
1211 text_fix_root = data_fix_root;
1212 data_fix_root = NULL;
1215 #endif /* BFD_ASSEMBLER || (! BFD && ! OBJ_AOUT) */
1217 #if !defined (BFD_ASSEMBLER) && !defined (BFD)
1219 relax_and_size_all_segments ()
1223 relax_segment (text_frag_root, SEG_TEXT);
1224 relax_segment (data_frag_root, SEG_DATA);
1225 relax_segment (bss_frag_root, SEG_BSS);
1227 * Now the addresses of frags are correct within the segment.
1230 know (text_last_frag->fr_type == rs_fill && text_last_frag->fr_offset == 0);
1231 H_SET_TEXT_SIZE (&headers, text_last_frag->fr_address);
1232 text_last_frag->fr_address = H_GET_TEXT_SIZE (&headers);
1235 * Join the 2 segments into 1 huge segment.
1236 * To do this, re-compute every rn_address in the SEG_DATA frags.
1237 * Then join the data frags after the text frags.
1239 * Determine a_data [length of data segment].
1243 register relax_addressT slide;
1245 know ((text_last_frag->fr_type == rs_fill) && (text_last_frag->fr_offset == 0));
1247 H_SET_DATA_SIZE (&headers, data_last_frag->fr_address);
1248 data_last_frag->fr_address = H_GET_DATA_SIZE (&headers);
1249 slide = H_GET_TEXT_SIZE (&headers); /* & in file of the data segment. */
1251 #define RoundUp(N,S) (((N)+(S)-1)&-(S))
1252 /* For b.out: If the data section has a strict alignment
1253 requirement, its load address in the .o file will be
1254 rounded up from the size of the text section. These
1255 two values are *not* the same! Similarly for the bss
1257 slide = RoundUp (slide, 1 << section_alignment[SEG_DATA]);
1260 for (fragP = data_frag_root; fragP; fragP = fragP->fr_next)
1262 fragP->fr_address += slide;
1263 } /* for each data frag */
1265 know (text_last_frag != 0);
1266 text_last_frag->fr_next = data_frag_root;
1270 H_SET_DATA_SIZE (&headers, 0);
1274 /* See above comments on b.out data section address. */
1277 if (data_last_frag == 0)
1278 bss_vma = H_GET_TEXT_SIZE (&headers);
1280 bss_vma = data_last_frag->fr_address;
1281 bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]);
1282 bss_address_frag.fr_address = bss_vma;
1284 #else /* ! OBJ_BOUT */
1285 bss_address_frag.fr_address = (H_GET_TEXT_SIZE (&headers) +
1286 H_GET_DATA_SIZE (&headers));
1288 #endif /* ! OBJ_BOUT */
1290 /* Slide all the frags */
1293 relax_addressT slide = bss_address_frag.fr_address;
1295 for (fragP = bss_frag_root; fragP; fragP = fragP->fr_next)
1297 fragP->fr_address += slide;
1298 } /* for each bss frag */
1302 H_SET_BSS_SIZE (&headers,
1303 bss_last_frag->fr_address - bss_frag_root->fr_address);
1305 H_SET_BSS_SIZE (&headers, 0);
1307 #endif /* ! BFD_ASSEMBLER && ! BFD */
1309 #if defined (BFD_ASSEMBLER) || !defined (BFD)
1311 #ifdef BFD_ASSEMBLER
1319 extern PTR bfd_alloc PARAMS ((bfd *, size_t));
1321 /* Count symbols. We can't rely on a count made by the loop in
1322 write_object_file, because *_frob_file may add a new symbol or
1325 for (symp = symbol_rootP; symp; symp = symbol_next (symp))
1332 asympp = (asymbol **) bfd_alloc (stdoutput,
1333 nsyms * sizeof (asymbol *));
1334 symp = symbol_rootP;
1335 for (i = 0; i < nsyms; i++, symp = symbol_next (symp))
1337 asympp[i] = symbol_get_bfdsym (symp);
1338 symbol_mark_written (symp);
1343 result = bfd_set_symtab (stdoutput, asympp, nsyms);
1344 assert (result == true);
1345 symbol_table_frozen = 1;
1349 /* Finish the subsegments. After every sub-segment, we fake an
1350 ".align ...". This conforms to BSD4.2 brane-damage. We then fake
1351 ".fill 0" because that is the kind of frag that requires least
1352 thought. ".align" frags like to have a following frag since that
1353 makes calculating their intended length trivial. */
1355 #ifndef SUB_SEGMENT_ALIGN
1356 #ifdef BFD_ASSEMBLER
1357 #define SUB_SEGMENT_ALIGN(SEG) (0)
1359 #define SUB_SEGMENT_ALIGN(SEG) (2)
1366 struct frchain *frchainP;
1368 for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next)
1370 subseg_set (frchainP->frch_seg, frchainP->frch_subseg);
1372 /* This now gets called even if we had errors. In that case,
1373 any alignment is meaningless, and, moreover, will look weird
1374 if we are generating a listing. */
1375 frag_align (had_errors () ? 0 : SUB_SEGMENT_ALIGN (now_seg),
1376 subseg_text_p (now_seg) ? NOP_OPCODE : 0,
1379 /* frag_align will have left a new frag.
1380 Use this last frag for an empty ".fill".
1382 For this segment ...
1383 Create a last frag. Do not leave a "being filled in frag". */
1385 frag_wane (frag_now);
1386 frag_now->fr_fix = 0;
1387 know (frag_now->fr_next == NULL);
1391 /* Write the object file. */
1394 write_object_file ()
1396 #if ! defined (BFD_ASSEMBLER) || ! defined (WORKING_DOT_WORD)
1397 fragS *fragP; /* Track along all frags. */
1400 /* Do we really want to write it? */
1402 int n_warns, n_errs;
1403 n_warns = had_warnings ();
1404 n_errs = had_errors ();
1405 /* The -Z flag indicates that an object file should be generated,
1406 regardless of warnings and errors. */
1407 if (flag_always_generate_output)
1409 if (n_warns || n_errs)
1410 as_warn (_("%d error%s, %d warning%s, generating bad object file.\n"),
1411 n_errs, n_errs == 1 ? "" : "s",
1412 n_warns, n_warns == 1 ? "" : "s");
1417 as_fatal (_("%d error%s, %d warning%s, no object file generated.\n"),
1418 n_errs, n_errs == 1 ? "" : "s",
1419 n_warns, n_warns == 1 ? "" : "s");
1424 /* Under VMS we try to be compatible with VAX-11 "C". Thus, we call
1425 a routine to check for the definition of the procedure "_main",
1426 and if so -- fix it up so that it can be program entry point. */
1427 vms_check_for_main ();
1428 #endif /* OBJ_VMS */
1430 /* From now on, we don't care about sub-segments. Build one frag chain
1431 for each segment. Linked thru fr_next. */
1433 #ifdef BFD_ASSEMBLER
1434 /* Remove the sections created by gas for its own purposes. */
1436 asection **seclist, *sec;
1439 seclist = &stdoutput->sections;
1440 while (seclist && *seclist)
1443 while (sec == reg_section || sec == expr_section)
1447 stdoutput->section_count--;
1452 seclist = &(*seclist)->next;
1455 bfd_map_over_sections (stdoutput, renumber_sections, &i);
1458 bfd_map_over_sections (stdoutput, chain_frchains_together, (char *) 0);
1460 remove_subsegs (frchain_root, SEG_TEXT, &text_frag_root, &text_last_frag);
1461 remove_subsegs (data0_frchainP, SEG_DATA, &data_frag_root, &data_last_frag);
1462 remove_subsegs (bss0_frchainP, SEG_BSS, &bss_frag_root, &bss_last_frag);
1465 /* We have two segments. If user gave -R flag, then we must put the
1466 data frags into the text segment. Do this before relaxing so
1467 we know to take advantage of -R and make shorter addresses. */
1468 #if !defined (OBJ_AOUT) || defined (BFD_ASSEMBLER)
1469 if (flag_readonly_data_in_text)
1471 merge_data_into_text ();
1475 #ifdef BFD_ASSEMBLER
1476 bfd_map_over_sections (stdoutput, relax_and_size_seg, (char *) 0);
1478 relax_and_size_all_segments ();
1479 #endif /* BFD_ASSEMBLER */
1481 #ifndef BFD_ASSEMBLER
1484 * Crawl the symbol chain.
1486 * For each symbol whose value depends on a frag, take the address of
1487 * that frag and subsume it into the value of the symbol.
1488 * After this, there is just one way to lookup a symbol value.
1489 * Values are left in their final state for object file emission.
1490 * We adjust the values of 'L' local symbols, even if we do
1491 * not intend to emit them to the object file, because their values
1492 * are needed for fix-ups.
1494 * Unless we saw a -L flag, remove all symbols that begin with 'L'
1495 * from the symbol chain. (They are still pointed to by the fixes.)
1497 * Count the remaining symbols.
1498 * Assign a symbol number to each symbol.
1499 * Count the number of string-table chars we will emit.
1500 * Put this info into the headers as appropriate.
1503 know (zero_address_frag.fr_address == 0);
1504 string_byte_count = sizeof (string_byte_count);
1506 obj_crawl_symbol_chain (&headers);
1508 if (string_byte_count == sizeof (string_byte_count))
1509 string_byte_count = 0;
1511 H_SET_STRING_SIZE (&headers, string_byte_count);
1514 * Addresses of frags now reflect addresses we use in the object file.
1515 * Symbol values are correct.
1516 * Scan the frags, converting any ".org"s and ".align"s to ".fill"s.
1517 * Also converting any machine-dependent frags using md_convert_frag();
1519 subseg_change (SEG_TEXT, 0);
1521 for (fragP = text_frag_root; fragP; fragP = fragP->fr_next)
1523 /* At this point we have linked all the frags into a single
1524 chain. However, cvt_frag_to_fill may call md_convert_frag
1525 which may call fix_new. We need to ensure that fix_new adds
1526 the fixup to the right section. */
1527 if (fragP == data_frag_root)
1528 subseg_change (SEG_DATA, 0);
1530 cvt_frag_to_fill (&headers, SEG_TEXT, fragP);
1532 /* Some assert macros don't work with # directives mixed in. */
1534 if (!(fragP->fr_next == NULL
1536 || fragP->fr_next == data_frag_root
1538 || ((fragP->fr_next->fr_address - fragP->fr_address)
1539 == (fragP->fr_fix + fragP->fr_offset * fragP->fr_var))))
1543 #endif /* ! BFD_ASSEMBLER */
1545 #ifndef WORKING_DOT_WORD
1547 struct broken_word *lie;
1548 struct broken_word **prevP;
1550 prevP = &broken_words;
1551 for (lie = broken_words; lie; lie = lie->next_broken_word)
1556 subseg_change (lie->seg, lie->subseg);
1557 exp.X_op = O_subtract;
1558 exp.X_add_symbol = lie->add;
1559 exp.X_op_symbol = lie->sub;
1560 exp.X_add_number = lie->addnum;
1561 #ifdef BFD_ASSEMBLER
1562 #ifdef TC_CONS_FIX_NEW
1563 TC_CONS_FIX_NEW (lie->frag,
1564 lie->word_goes_here - lie->frag->fr_literal,
1567 fix_new_exp (lie->frag,
1568 lie->word_goes_here - lie->frag->fr_literal,
1569 2, &exp, 0, BFD_RELOC_16);
1572 #if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE)
1573 fix_new_exp (lie->frag,
1574 lie->word_goes_here - lie->frag->fr_literal,
1575 2, &exp, 0, NO_RELOC);
1578 fix_new_ns32k_exp (lie->frag,
1579 lie->word_goes_here - lie->frag->fr_literal,
1580 2, &exp, 0, 0, 2, 0, 0);
1582 fix_new_exp (lie->frag,
1583 lie->word_goes_here - lie->frag->fr_literal,
1585 #endif /* TC_NS32K */
1586 #endif /* TC_SPARC|TC_A29K|NEED_FX_R_TYPE */
1587 #endif /* BFD_ASSEMBLER */
1588 *prevP = lie->next_broken_word;
1591 prevP = &(lie->next_broken_word);
1593 for (lie = broken_words; lie;)
1595 struct broken_word *untruth;
1597 addressT table_addr;
1598 addressT from_addr, to_addr;
1601 subseg_change (lie->seg, lie->subseg);
1602 fragP = lie->dispfrag;
1604 /* Find out how many broken_words go here. */
1606 for (untruth = lie; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word)
1607 if (untruth->added == 1)
1610 table_ptr = lie->dispfrag->fr_opcode;
1611 table_addr = lie->dispfrag->fr_address + (table_ptr - lie->dispfrag->fr_literal);
1612 /* Create the jump around the long jumps. This is a short
1613 jump from table_ptr+0 to table_ptr+n*long_jump_size. */
1614 from_addr = table_addr;
1615 to_addr = table_addr + md_short_jump_size + n * md_long_jump_size;
1616 md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add);
1617 table_ptr += md_short_jump_size;
1618 table_addr += md_short_jump_size;
1620 for (m = 0; lie && lie->dispfrag == fragP; m++, lie = lie->next_broken_word)
1622 if (lie->added == 2)
1624 /* Patch the jump table */
1625 /* This is the offset from ??? to table_ptr+0 */
1626 to_addr = table_addr - S_GET_VALUE (lie->sub);
1627 #ifdef BFD_ASSEMBLER
1628 to_addr -= symbol_get_frag (lie->sub)->fr_address;
1630 md_number_to_chars (lie->word_goes_here, to_addr, 2);
1631 for (untruth = lie->next_broken_word; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word)
1633 if (untruth->use_jump == lie)
1634 md_number_to_chars (untruth->word_goes_here, to_addr, 2);
1637 /* Install the long jump */
1638 /* this is a long jump from table_ptr+0 to the final target */
1639 from_addr = table_addr;
1640 to_addr = S_GET_VALUE (lie->add) + lie->addnum;
1641 #ifdef BFD_ASSEMBLER
1642 to_addr += symbol_get_frag (lie->add)->fr_address;
1644 md_create_long_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add);
1645 table_ptr += md_long_jump_size;
1646 table_addr += md_long_jump_size;
1650 #endif /* not WORKING_DOT_WORD */
1652 #ifndef BFD_ASSEMBLER
1655 char *the_object_file;
1656 long object_file_size;
1658 * Scan every FixS performing fixups. We had to wait until now to do
1659 * this because md_convert_frag() may have made some fixSs.
1663 subseg_change (SEG_TEXT, 0);
1664 trsize = md_reloc_size * fixup_segment (text_fix_root, SEG_TEXT);
1665 subseg_change (SEG_DATA, 0);
1666 drsize = md_reloc_size * fixup_segment (data_fix_root, SEG_DATA);
1667 H_SET_RELOCATION_SIZE (&headers, trsize, drsize);
1669 /* FIXME move this stuff into the pre-write-hook */
1670 H_SET_MAGIC_NUMBER (&headers, magic_number_for_object_file);
1671 H_SET_ENTRY_POINT (&headers, 0);
1673 obj_pre_write_hook (&headers); /* extra coff stuff */
1675 object_file_size = H_GET_FILE_SIZE (&headers);
1676 next_object_file_charP = the_object_file = xmalloc (object_file_size);
1678 output_file_create (out_file_name);
1680 obj_header_append (&next_object_file_charP, &headers);
1682 know ((next_object_file_charP - the_object_file) == H_GET_HEADER_SIZE (&headers));
1687 for (fragP = text_frag_root; fragP; fragP = fragP->fr_next)
1689 register long count;
1690 register char *fill_literal;
1691 register long fill_size;
1694 know (fragP->fr_type == rs_fill);
1695 append (&next_object_file_charP, fragP->fr_literal, (unsigned long) fragP->fr_fix);
1696 fill_literal = fragP->fr_literal + fragP->fr_fix;
1697 fill_size = fragP->fr_var;
1698 know (fragP->fr_offset >= 0);
1700 for (count = fragP->fr_offset; count; count--)
1702 append (&next_object_file_charP, fill_literal, (unsigned long) fill_size);
1705 } /* for each code frag. */
1707 know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers)));
1712 obj_emit_relocations (&next_object_file_charP, text_fix_root, (relax_addressT) 0);
1713 know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers) + H_GET_TEXT_RELOCATION_SIZE (&headers)));
1715 /* Make addresses in data relocation directives relative to beginning of
1716 * first data fragment, not end of last text fragment: alignment of the
1717 * start of the data segment may place a gap between the segments.
1719 obj_emit_relocations (&next_object_file_charP, data_fix_root, data0_frchainP->frch_root->fr_address);
1721 obj_emit_relocations (&next_object_file_charP, data_fix_root, text_last_frag->fr_address);
1722 #endif /* TC_I960 */
1724 know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers) + H_GET_TEXT_RELOCATION_SIZE (&headers) + H_GET_DATA_RELOCATION_SIZE (&headers)));
1727 * Emit line number entries.
1729 OBJ_EMIT_LINENO (&next_object_file_charP, lineno_rootP, the_object_file);
1730 know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers) + H_GET_TEXT_RELOCATION_SIZE (&headers) + H_GET_DATA_RELOCATION_SIZE (&headers) + H_GET_LINENO_SIZE (&headers)));
1735 obj_emit_symbols (&next_object_file_charP, symbol_rootP);
1736 know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers) + H_GET_TEXT_RELOCATION_SIZE (&headers) + H_GET_DATA_RELOCATION_SIZE (&headers) + H_GET_LINENO_SIZE (&headers) + H_GET_SYMBOL_TABLE_SIZE (&headers)));
1742 if (string_byte_count > 0)
1744 obj_emit_strings (&next_object_file_charP);
1745 } /* only if we have a string table */
1748 bfd_seek (stdoutput, 0, 0);
1749 bfd_write (the_object_file, 1, object_file_size, stdoutput);
1752 /* Write the data to the file */
1753 output_file_append (the_object_file, object_file_size, out_file_name);
1754 free (the_object_file);
1756 } /* non vms output */
1759 * Now do the VMS-dependent part of writing the object file
1761 vms_write_object_file (H_GET_TEXT_SIZE (&headers),
1762 H_GET_DATA_SIZE (&headers),
1763 H_GET_BSS_SIZE (&headers),
1764 text_frag_root, data_frag_root);
1765 #endif /* OBJ_VMS */
1766 #else /* BFD_ASSEMBLER */
1768 /* Resolve symbol values. This needs to be done before processing
1774 for (symp = symbol_rootP; symp; symp = symbol_next (symp))
1775 resolve_symbol_value (symp, 1);
1777 resolve_local_symbol_values ();
1781 #ifdef tc_frob_file_before_adjust
1782 tc_frob_file_before_adjust ();
1784 #ifdef obj_frob_file_before_adjust
1785 obj_frob_file_before_adjust ();
1788 bfd_map_over_sections (stdoutput, adjust_reloc_syms, (char *)0);
1790 /* Set up symbol table, and write it out. */
1795 for (symp = symbol_rootP; symp; symp = symbol_next (symp))
1800 if (symbol_mri_common_p (symp))
1802 if (S_IS_EXTERNAL (symp))
1803 as_bad (_("%s: global symbols not supported in common sections"),
1805 symbol_remove (symp, &symbol_rootP, &symbol_lastP);
1809 name = S_GET_NAME (symp);
1812 const char *name2 = decode_local_label_name ((char *)S_GET_NAME (symp));
1813 /* They only differ if `name' is a fb or dollar local
1815 if (name2 != name && ! S_IS_DEFINED (symp))
1816 as_bad (_("local label %s is not defined"), name2);
1819 /* Do it again, because adjust_reloc_syms might introduce
1820 more symbols. They'll probably only be section symbols,
1821 but they'll still need to have the values computed. */
1822 resolve_symbol_value (symp, 1);
1824 /* Skip symbols which were equated to undefined or common
1826 if (symbol_equated_p (symp)
1827 && (! S_IS_DEFINED (symp) || S_IS_COMMON (symp)))
1829 symbol_remove (symp, &symbol_rootP, &symbol_lastP);
1833 /* So far, common symbols have been treated like undefined symbols.
1834 Put them in the common section now. */
1835 if (S_IS_DEFINED (symp) == 0
1836 && S_GET_VALUE (symp) != 0)
1837 S_SET_SEGMENT (symp, bfd_com_section_ptr);
1839 printf ("symbol `%s'\n\t@%x: value=%d flags=%x seg=%s\n",
1840 S_GET_NAME (symp), symp,
1842 symbol_get_bfdsym (symp)->flags,
1843 segment_name (S_GET_SEGMENT (symp)));
1846 #ifdef obj_frob_symbol
1847 obj_frob_symbol (symp, punt);
1849 #ifdef tc_frob_symbol
1850 if (! punt || symbol_used_in_reloc_p (symp))
1851 tc_frob_symbol (symp, punt);
1854 /* If we don't want to keep this symbol, splice it out of
1855 the chain now. If EMIT_SECTION_SYMBOLS is 0, we never
1856 want section symbols. Otherwise, we skip local symbols
1857 and symbols that the frob_symbol macros told us to punt,
1858 but we keep such symbols if they are used in relocs. */
1859 if ((! EMIT_SECTION_SYMBOLS
1860 && symbol_section_p (symp))
1861 /* Note that S_IS_EXTERN and S_IS_LOCAL are not always
1862 opposites. Sometimes the former checks flags and the
1863 latter examines the name... */
1864 || (!S_IS_EXTERN (symp)
1865 && (S_IS_LOCAL (symp) || punt)
1866 && ! symbol_used_in_reloc_p (symp)))
1868 symbol_remove (symp, &symbol_rootP, &symbol_lastP);
1869 /* After symbol_remove, symbol_next(symp) still returns
1870 the one that came after it in the chain. So we don't
1871 need to do any extra cleanup work here. */
1876 /* Make sure we really got a value for the symbol. */
1877 if (! symbol_resolved_p (symp))
1879 as_bad (_("can't resolve value for symbol \"%s\""),
1881 symbol_mark_resolved (symp);
1884 /* Set the value into the BFD symbol. Up til now the value
1885 has only been kept in the gas symbolS struct. */
1886 symbol_get_bfdsym (symp)->value = S_GET_VALUE (symp);
1892 /* Now do any format-specific adjustments to the symbol table, such
1893 as adding file symbols. */
1894 #ifdef tc_adjust_symtab
1895 tc_adjust_symtab ();
1897 #ifdef obj_adjust_symtab
1898 obj_adjust_symtab ();
1901 /* Now that all the sizes are known, and contents correct, we can
1902 start writing to the file. */
1905 /* If *_frob_file changes the symbol value at this point, it is
1906 responsible for moving the changed value into symp->bsym->value
1907 as well. Hopefully all symbol value changing can be done in
1912 #ifdef obj_frob_file
1916 bfd_map_over_sections (stdoutput, write_relocs, (char *) 0);
1918 #ifdef tc_frob_file_after_relocs
1919 tc_frob_file_after_relocs ();
1921 #ifdef obj_frob_file_after_relocs
1922 obj_frob_file_after_relocs ();
1925 bfd_map_over_sections (stdoutput, write_contents, (char *) 0);
1926 #endif /* BFD_ASSEMBLER */
1933 * Now we have a segment, not a crowd of sub-segments, we can make fr_address
1938 * After this, all frags in this segment have addresses that are correct
1939 * within the segment. Since segments live in different file addresses,
1940 * these frag addresses may not be the same as final object-file addresses.
1943 #ifdef TC_GENERIC_RELAX_TABLE
1945 static int is_dnrange PARAMS ((fragS *, fragS *));
1947 /* Subroutines of relax_segment. */
1953 for (; f1; f1 = f1->fr_next)
1954 if (f1->fr_next == f2)
1959 /* Relax a fragment by scanning TC_GENERIC_RELAX_TABLE. */
1962 relax_frag (fragP, stretch)
1966 const relax_typeS *this_type;
1967 const relax_typeS *start_type;
1968 relax_substateT next_state;
1969 relax_substateT this_state;
1970 long aim, target, growth;
1971 symbolS *symbolP = fragP->fr_symbol;
1972 long offset = fragP->fr_offset;
1973 /* Recompute was_address by undoing "+= stretch" done by relax_segment. */
1974 unsigned long was_address = fragP->fr_address - stretch;
1975 unsigned long address = fragP->fr_address;
1976 const relax_typeS *table = TC_GENERIC_RELAX_TABLE;
1978 this_state = fragP->fr_subtype;
1979 start_type = this_type = table + this_state;
1984 #ifndef DIFF_EXPR_OK
1985 #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER)
1986 know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
1987 || (S_GET_SEGMENT (symbolP) == SEG_DATA)
1988 || (S_GET_SEGMENT (symbolP) == SEG_BSS)
1989 || (S_GET_SEGMENT (symbolP) == SEG_TEXT));
1991 know (symbolP->sy_frag);
1993 know (!(S_GET_SEGMENT (symbolP) == absolute_section)
1994 || symbolP->sy_frag == &zero_address_frag);
1995 target += S_GET_VALUE (symbolP) + symbol_get_frag (symbolP)->fr_address;
1997 /* If frag has yet to be reached on this pass,
1998 assume it will move by STRETCH just as we did.
1999 If this is not so, it will be because some frag
2000 between grows, and that will force another pass.
2002 Beware zero-length frags.
2004 There should be a faster way to do this. */
2006 if (symbol_get_frag (symbolP)->fr_address >= was_address
2007 && is_dnrange (fragP, symbol_get_frag (symbolP)))
2013 aim = target - address - fragP->fr_fix;
2014 #ifdef TC_PCREL_ADJUST
2015 /* Currently only the ns32k family needs this */
2016 aim += TC_PCREL_ADJUST(fragP);
2018 /* This machine doesn't want to use pcrel_adjust.
2019 In that case, pcrel_adjust should be zero. */
2020 /* assert (fragP->fr_targ.ns32k.pcrel_adjust == 0);*/
2022 #ifdef md_prepare_relax_scan /* formerly called M68K_AIM_KLUDGE */
2023 md_prepare_relax_scan (fragP, address, aim, this_state, this_type);
2028 /* Look backwards. */
2029 for (next_state = this_type->rlx_more; next_state;)
2030 if (aim >= this_type->rlx_backward)
2034 /* Grow to next state. */
2035 this_state = next_state;
2036 this_type = table + this_state;
2037 next_state = this_type->rlx_more;
2042 /* Look forwards. */
2043 for (next_state = this_type->rlx_more; next_state;)
2044 if (aim <= this_type->rlx_forward)
2048 /* Grow to next state. */
2049 this_state = next_state;
2050 this_type = table + this_state;
2051 next_state = this_type->rlx_more;
2055 growth = this_type->rlx_length - start_type->rlx_length;
2057 fragP->fr_subtype = this_state;
2061 #endif /* defined (TC_GENERIC_RELAX_TABLE) */
2063 /* Relax_align. Advance location counter to next address that has 'alignment'
2064 lowest order bits all 0s, return size of adjustment made. */
2065 static relax_addressT
2066 relax_align (address, alignment)
2067 register relax_addressT address; /* Address now. */
2068 register int alignment; /* Alignment (binary). */
2070 relax_addressT mask;
2071 relax_addressT new_address;
2073 mask = ~((~0) << alignment);
2074 new_address = (address + mask) & (~mask);
2075 #ifdef LINKER_RELAXING_SHRINKS_ONLY
2077 /* We must provide lots of padding, so the linker can discard it
2078 when needed. The linker will not add extra space, ever. */
2079 new_address += (1 << alignment);
2081 return (new_address - address);
2085 relax_segment (segment_frag_root, segment)
2086 struct frag *segment_frag_root;
2089 register struct frag *fragP;
2090 register relax_addressT address;
2091 #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER)
2092 know (segment == SEG_DATA || segment == SEG_TEXT || segment == SEG_BSS);
2094 /* In case md_estimate_size_before_relax() wants to make fixSs. */
2095 subseg_change (segment, 0);
2097 /* For each frag in segment: count and store (a 1st guess of)
2100 for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next)
2102 fragP->fr_address = address;
2103 address += fragP->fr_fix;
2105 switch (fragP->fr_type)
2108 address += fragP->fr_offset * fragP->fr_var;
2114 addressT offset = relax_align (address, (int) fragP->fr_offset);
2116 if (fragP->fr_subtype != 0 && offset > fragP->fr_subtype)
2119 if (offset % fragP->fr_var != 0)
2121 as_bad (_("alignment padding (%lu bytes) not a multiple of %ld"),
2122 (unsigned long) offset, (long) fragP->fr_var);
2123 offset -= (offset % fragP->fr_var);
2132 /* Assume .org is nugatory. It will grow with 1st relax. */
2135 case rs_machine_dependent:
2136 address += md_estimate_size_before_relax (fragP, segment);
2139 #ifndef WORKING_DOT_WORD
2140 /* Broken words don't concern us yet */
2141 case rs_broken_word:
2146 /* Initial guess is always 1; doing otherwise can result in
2147 stable solutions that are larger than the minimum. */
2148 address += fragP->fr_offset = 1;
2152 address += eh_frame_estimate_size_before_relax (fragP);
2156 BAD_CASE (fragP->fr_type);
2158 } /* switch(fr_type) */
2159 } /* for each frag in the segment */
2163 long stretch; /* May be any size, 0 or negative. */
2164 /* Cumulative number of addresses we have */
2165 /* relaxed this pass. */
2166 /* We may have relaxed more than one address. */
2167 long stretched; /* Have we stretched on this pass? */
2168 /* This is 'cuz stretch may be zero, when, in fact some piece of code
2169 grew, and another shrank. If a branch instruction doesn't fit anymore,
2170 we could be scrod. */
2174 stretch = stretched = 0;
2175 for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next)
2178 addressT was_address;
2182 was_address = fragP->fr_address;
2183 address = fragP->fr_address += stretch;
2184 symbolP = fragP->fr_symbol;
2185 offset = fragP->fr_offset;
2187 switch (fragP->fr_type)
2189 case rs_fill: /* .fill never relaxes. */
2193 #ifndef WORKING_DOT_WORD
2194 /* JF: This is RMS's idea. I do *NOT* want to be blamed
2195 for it I do not want to write it. I do not want to have
2196 anything to do with it. This is not the proper way to
2197 implement this misfeature. */
2198 case rs_broken_word:
2200 struct broken_word *lie;
2201 struct broken_word *untruth;
2203 /* Yes this is ugly (storing the broken_word pointer
2204 in the symbol slot). Still, this whole chunk of
2205 code is ugly, and I don't feel like doing anything
2206 about it. Think of it as stubbornness in action. */
2208 for (lie = (struct broken_word *) (fragP->fr_symbol);
2209 lie && lie->dispfrag == fragP;
2210 lie = lie->next_broken_word)
2216 offset = (symbol_get_frag (lie->add)->fr_address
2217 + S_GET_VALUE (lie->add)
2219 - (symbol_get_frag (lie->sub)->fr_address
2220 + S_GET_VALUE (lie->sub)));
2221 if (offset <= -32768 || offset >= 32767)
2223 if (flag_warn_displacement)
2226 sprint_value (buf, (addressT) lie->addnum);
2227 as_warn (_(".word %s-%s+%s didn't fit"),
2228 S_GET_NAME (lie->add),
2229 S_GET_NAME (lie->sub),
2233 if (fragP->fr_subtype == 0)
2235 fragP->fr_subtype++;
2236 growth += md_short_jump_size;
2238 for (untruth = lie->next_broken_word;
2239 untruth && untruth->dispfrag == lie->dispfrag;
2240 untruth = untruth->next_broken_word)
2241 if ((symbol_get_frag (untruth->add)
2242 == symbol_get_frag (lie->add))
2243 && (S_GET_VALUE (untruth->add)
2244 == S_GET_VALUE (lie->add)))
2247 untruth->use_jump = lie;
2249 growth += md_long_jump_size;
2254 } /* case rs_broken_word */
2259 addressT oldoff, newoff;
2261 oldoff = relax_align (was_address + fragP->fr_fix,
2263 newoff = relax_align (address + fragP->fr_fix,
2266 if (fragP->fr_subtype != 0)
2268 if (oldoff > fragP->fr_subtype)
2270 if (newoff > fragP->fr_subtype)
2274 growth = newoff - oldoff;
2280 long target = offset;
2285 #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER)
2286 know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
2287 || (S_GET_SEGMENT (symbolP) == SEG_DATA)
2288 || (S_GET_SEGMENT (symbolP) == SEG_TEXT)
2289 || S_GET_SEGMENT (symbolP) == SEG_BSS);
2290 know (symbolP->sy_frag);
2291 know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
2292 || (symbolP->sy_frag == &zero_address_frag));
2294 target += (S_GET_VALUE (symbolP)
2295 + symbol_get_frag (symbolP)->fr_address);
2296 } /* if we have a symbol */
2298 know (fragP->fr_next);
2299 after = fragP->fr_next->fr_address;
2300 growth = target - after;
2303 /* Growth may be negative, but variable part of frag
2304 cannot have fewer than 0 chars. That is, we can't
2306 as_bad_where (fragP->fr_file, fragP->fr_line,
2307 _("attempt to .org backwards ignored"));
2309 /* We've issued an error message. Change the
2310 frag to avoid cascading errors. */
2311 fragP->fr_type = rs_align;
2312 fragP->fr_subtype = 0;
2313 fragP->fr_offset = 0;
2314 fragP->fr_fix = after - address;
2318 growth -= stretch; /* This is an absolute growth factor */
2325 growth = S_GET_VALUE (symbolP);
2326 if (symbol_get_frag (symbolP) != &zero_address_frag
2327 || S_IS_COMMON (symbolP)
2328 || ! S_IS_DEFINED (symbolP))
2329 as_bad_where (fragP->fr_file, fragP->fr_line,
2330 _(".space specifies non-absolute value"));
2331 fragP->fr_symbol = 0;
2334 as_warn (_(".space or .fill with negative value, ignored"));
2342 case rs_machine_dependent:
2343 #ifdef md_relax_frag
2344 growth = md_relax_frag (fragP, stretch);
2346 #ifdef TC_GENERIC_RELAX_TABLE
2347 /* The default way to relax a frag is to look through
2348 TC_GENERIC_RELAX_TABLE. */
2349 growth = relax_frag (fragP, stretch);
2350 #endif /* TC_GENERIC_RELAX_TABLE */
2359 value = resolve_symbol_value (fragP->fr_symbol, 0);
2360 size = sizeof_leb128 (value, fragP->fr_subtype);
2361 growth = size - fragP->fr_offset;
2362 fragP->fr_offset = size;
2367 growth = eh_frame_relax_frag (fragP);
2371 BAD_CASE (fragP->fr_type);
2379 } /* For each frag in the segment. */
2381 while (stretched); /* Until nothing further to relax. */
2385 * We now have valid fr_address'es for each frag.
2389 * All fr_address's are correct, relative to their own segment.
2390 * We have made all the fixS we will ever make.
2392 } /* relax_segment() */
2394 #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS))
2396 #ifndef TC_RELOC_RTSYM_LOC_FIXUP
2397 #define TC_RELOC_RTSYM_LOC_FIXUP(X) (1)
2402 Go through all the fixS's in a segment and see which ones can be
2403 handled now. (These consist of fixS where we have since discovered
2404 the value of a symbol, or the address of the frag involved.)
2405 For each one, call md_apply_fix to put the fix into the frag data.
2407 Result is a count of how many relocation structs will be needed to
2408 handle the remaining fixS's that we couldn't completely handle here.
2409 These will be output later by emit_relocations(). */
2412 fixup_segment (fixP, this_segment_type)
2413 register fixS *fixP;
2414 segT this_segment_type; /* N_TYPE bits for segment. */
2416 long seg_reloc_count = 0;
2417 symbolS *add_symbolP;
2418 symbolS *sub_symbolP;
2425 segT add_symbol_segment = absolute_section;
2427 /* If the linker is doing the relaxing, we must not do any fixups.
2429 Well, strictly speaking that's not true -- we could do any that are
2430 PC-relative and don't cross regions that could change size. And for the
2431 i960 (the only machine for which we've got a relaxing linker right now),
2432 we might be able to turn callx/callj into bal anyways in cases where we
2433 know the maximum displacement. */
2436 for (; fixP; fixP = fixP->fx_next)
2438 TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count);
2439 return seg_reloc_count;
2442 for (; fixP; fixP = fixP->fx_next)
2446 fprintf (stderr, "\nprocessing fixup:\n");
2451 fragP = fixP->fx_frag;
2453 where = fixP->fx_where;
2454 place = fragP->fr_literal + where;
2455 size = fixP->fx_size;
2456 add_symbolP = fixP->fx_addsy;
2457 #ifdef TC_VALIDATE_FIX
2458 TC_VALIDATE_FIX (fixP, this_segment_type, skip);
2460 sub_symbolP = fixP->fx_subsy;
2461 add_number = fixP->fx_offset;
2462 pcrel = fixP->fx_pcrel;
2465 if (add_symbolP != NULL
2466 && symbol_mri_common_p (add_symbolP))
2468 know (add_symbolP->sy_value.X_op == O_symbol);
2469 add_number += S_GET_VALUE (add_symbolP);
2470 fixP->fx_offset = add_number;
2471 add_symbolP = fixP->fx_addsy =
2472 symbol_get_value_expression (add_symbolP)->X_add_symbol;
2476 add_symbol_segment = S_GET_SEGMENT (add_symbolP);
2480 resolve_symbol_value (sub_symbolP, 1);
2481 if (add_symbolP == NULL || add_symbol_segment == absolute_section)
2483 if (add_symbolP != NULL)
2485 add_number += S_GET_VALUE (add_symbolP);
2487 fixP->fx_addsy = NULL;
2490 /* It's just -sym */
2491 if (S_GET_SEGMENT (sub_symbolP) == absolute_section)
2493 add_number -= S_GET_VALUE (sub_symbolP);
2494 fixP->fx_subsy = NULL;
2497 && S_GET_SEGMENT (sub_symbolP) == this_segment_type)
2499 /* Should try converting to a constant. */
2504 as_bad_where (fixP->fx_file, fixP->fx_line,
2505 _("Negative of non-absolute symbol %s"),
2506 S_GET_NAME (sub_symbolP));
2508 else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment
2509 && SEG_NORMAL (add_symbol_segment))
2511 /* Difference of 2 symbols from same segment.
2512 Can't make difference of 2 undefineds: 'value' means
2513 something different for N_UNDF. */
2515 /* Makes no sense to use the difference of 2 arbitrary symbols
2516 as the target of a call instruction. */
2518 as_bad_where (fixP->fx_file, fixP->fx_line,
2519 _("callj to difference of 2 symbols"));
2520 #endif /* TC_I960 */
2521 add_number += S_GET_VALUE (add_symbolP) -
2522 S_GET_VALUE (sub_symbolP);
2525 pcrel = 0; /* No further pcrel processing. */
2527 /* Let the target machine make the final determination
2528 as to whether or not a relocation will be needed to
2529 handle this fixup. */
2530 if (!TC_FORCE_RELOCATION_SECTION (fixP, this_segment_type))
2533 fixP->fx_addsy = NULL;
2534 fixP->fx_subsy = NULL;
2539 /* Different segments in subtraction. */
2540 know (!(S_IS_EXTERNAL (sub_symbolP)
2541 && (S_GET_SEGMENT (sub_symbolP) == absolute_section)));
2543 if ((S_GET_SEGMENT (sub_symbolP) == absolute_section))
2544 add_number -= S_GET_VALUE (sub_symbolP);
2547 else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type
2548 #if 0 /* Do this even if it's already described as pc-relative. For example,
2549 on the m68k, an operand of "pc@(foo-.-2)" should address "foo" in a
2550 pc-relative mode. */
2555 /* Make it pc-relative. */
2556 add_number += (MD_PCREL_FROM_SECTION (fixP, this_segment_type)
2557 - S_GET_VALUE (sub_symbolP));
2564 #ifdef UNDEFINED_DIFFERENCE_OK
2565 /* The PA needs this for PIC code generation. We basically
2566 don't want to do anything if we have the difference of two
2567 symbols at this point. */
2570 /* Leave it alone. */
2573 #ifdef BFD_ASSEMBLER
2574 else if (fixP->fx_r_type == BFD_RELOC_GPREL32
2575 || fixP->fx_r_type == BFD_RELOC_GPREL16)
2577 /* Leave it alone. */
2583 sprint_value (buf, fragP->fr_address + where);
2584 as_bad_where (fixP->fx_file, fixP->fx_line,
2585 _("Subtraction of two symbols in different sections \"%s\" {%s section} - \"%s\" {%s section} at file address %s."),
2586 S_GET_NAME (add_symbolP),
2587 segment_name (S_GET_SEGMENT (add_symbolP)),
2588 S_GET_NAME (sub_symbolP),
2589 segment_name (S_GET_SEGMENT (sub_symbolP)),
2597 if (add_symbol_segment == this_segment_type && pcrel && !plt
2598 && TC_RELOC_RTSYM_LOC_FIXUP (fixP))
2601 * This fixup was made when the symbol's segment was
2602 * SEG_UNKNOWN, but it is now in the local segment.
2603 * So we know how to do the address without relocation.
2606 /* reloc_callj() may replace a 'call' with a 'calls' or a
2607 'bal', in which cases it modifies *fixP as appropriate.
2608 In the case of a 'calls', no further work is required,
2609 and *fixP has been set up to make the rest of the code
2612 #endif /* TC_I960 */
2614 add_number += S_GET_VALUE (add_symbolP);
2615 add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type);
2616 pcrel = 0; /* Lie. Don't want further pcrel processing. */
2618 /* Let the target machine make the final determination
2619 as to whether or not a relocation will be needed to
2620 handle this fixup. */
2621 if (!TC_FORCE_RELOCATION (fixP))
2624 fixP->fx_addsy = NULL;
2629 if (add_symbol_segment == absolute_section
2633 /* See comment about reloc_callj() above. */
2635 #endif /* TC_I960 */
2636 add_number += S_GET_VALUE (add_symbolP);
2638 /* Let the target machine make the final determination
2639 as to whether or not a relocation will be needed to
2640 handle this fixup. */
2642 if (!TC_FORCE_RELOCATION (fixP))
2644 fixP->fx_addsy = NULL;
2648 else if (add_symbol_segment == undefined_section
2649 #ifdef BFD_ASSEMBLER
2650 || bfd_is_com_section (add_symbol_segment)
2655 if ((int) fixP->fx_bit_fixP == 13)
2657 /* This is a COBR instruction. They have only a
2658 * 13-bit displacement and are only to be used
2659 * for local branches: flag as error, don't generate
2662 as_bad_where (fixP->fx_file, fixP->fx_line,
2663 _("can't use COBR format with external label"));
2664 fixP->fx_addsy = NULL;
2668 #endif /* TC_I960 */
2672 if (S_IS_COMMON (add_symbolP))
2673 add_number += S_GET_VALUE (add_symbolP);
2674 #endif /* TE_I386AIX */
2675 #endif /* OBJ_COFF */
2681 #if !(defined (TC_V850) && defined (OBJ_ELF))
2682 #if !(defined (TC_M68K) && defined (OBJ_ELF))
2683 #if !(defined (TC_ARM) && defined (OBJ_ELF))
2684 #if !(defined (TC_I960) && defined (OBJ_ELF))
2685 #if !defined (TC_I386) || !(defined (OBJ_ELF) || defined (OBJ_COFF)) || defined (TE_PE)
2686 add_number += S_GET_VALUE (add_symbolP);
2698 add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type);
2699 if (add_symbolP == 0)
2701 #ifndef BFD_ASSEMBLER
2702 fixP->fx_addsy = &abs_symbol;
2704 fixP->fx_addsy = section_symbol (absolute_section);
2706 symbol_mark_used_in_reloc (fixP->fx_addsy);
2713 #ifdef MD_APPLY_FIX3
2714 md_apply_fix3 (fixP, &add_number, this_segment_type);
2716 #ifdef BFD_ASSEMBLER
2717 md_apply_fix (fixP, &add_number);
2719 md_apply_fix (fixP, add_number);
2723 #ifndef TC_HANDLES_FX_DONE
2724 /* If the tc-* files haven't been converted, assume it's handling
2725 it the old way, where a null fx_addsy means that the fix has
2726 been applied completely, and no further work is needed. */
2727 if (fixP->fx_addsy == 0 && fixP->fx_pcrel == 0)
2732 if (!fixP->fx_bit_fixP && !fixP->fx_no_overflow && size > 0)
2734 if ((size_t) size < sizeof (valueT))
2738 /* set all bits to one */
2741 /* Technically, combining these produces an undefined result
2742 if size is sizeof (valueT), though I think these two
2743 half-way operations should both be defined. And the
2744 compiler should be able to combine them if it's valid on
2745 the host architecture. */
2748 hibit = (valueT) 1 << (size * 8 - 1);
2749 if (((add_number & mask) != 0
2751 && (add_number & hibit) != 0))
2752 && ((add_number & mask) != mask
2753 || (add_number & hibit) == 0))
2755 char buf[50], buf2[50];
2756 sprint_value (buf, fragP->fr_address + where);
2757 if (add_number > 1000)
2758 sprint_value (buf2, add_number);
2760 sprintf (buf2, "%ld", (long) add_number);
2761 as_bad_where (fixP->fx_file, fixP->fx_line,
2762 _("Value of %s too large for field of %d bytes at %s"),
2764 } /* generic error checking */
2766 #ifdef WARN_SIGNED_OVERFLOW_WORD
2767 /* Warn if a .word value is too large when treated as a signed
2768 number. We already know it is not too negative. This is to
2769 catch over-large switches generated by gcc on the 68k. */
2770 if (!flag_signed_overflow_ok
2772 && add_number > 0x7fff)
2773 as_bad_where (fixP->fx_file, fixP->fx_line,
2774 _("Signed .word overflow; switch may be too large; %ld at 0x%lx"),
2776 (unsigned long) (fragP->fr_address + where));
2778 } /* not a bit fix */
2780 #ifdef TC_VALIDATE_FIX
2781 skip: ATTRIBUTE_UNUSED_LABEL
2785 fprintf (stderr, "result:\n");
2788 } /* For each fixS in this segment. */
2790 TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count);
2791 return seg_reloc_count;
2794 #endif /* defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) */
2797 number_to_chars_bigendian (buf, val, n)
2802 if ((size_t) n > sizeof (val) || n <= 0)
2806 buf[n] = val & 0xff;
2812 number_to_chars_littleendian (buf, val, n)
2817 if ((size_t) n > sizeof (val) || n <= 0)
2821 *buf++ = val & 0xff;
2827 write_print_statistics (file)
2830 fprintf (file, "fixups: %d\n", n_fixups);
2834 extern int indent_level;
2841 fprintf (stderr, "fix %lx %s:%d", (long) fixp, fixp->fx_file, fixp->fx_line);
2843 fprintf (stderr, " pcrel");
2844 if (fixp->fx_pcrel_adjust)
2845 fprintf (stderr, " pcrel_adjust=%d", fixp->fx_pcrel_adjust);
2846 if (fixp->fx_im_disp)
2849 fprintf (stderr, " im_disp=%d", fixp->fx_im_disp);
2851 fprintf (stderr, " im_disp");
2855 fprintf (stderr, " tcbit");
2857 fprintf (stderr, " done");
2858 fprintf (stderr, "\n size=%d frag=%lx where=%ld offset=%lx addnumber=%lx",
2859 fixp->fx_size, (long) fixp->fx_frag, (long) fixp->fx_where,
2860 (long) fixp->fx_offset, (long) fixp->fx_addnumber);
2861 #ifdef BFD_ASSEMBLER
2862 fprintf (stderr, "\n %s (%d)", bfd_get_reloc_code_name (fixp->fx_r_type),
2865 #ifdef NEED_FX_R_TYPE
2866 fprintf (stderr, " r_type=%d", fixp->fx_r_type);
2871 fprintf (stderr, "\n +<");
2872 print_symbol_value_1 (stderr, fixp->fx_addsy);
2873 fprintf (stderr, ">");
2877 fprintf (stderr, "\n -<");
2878 print_symbol_value_1 (stderr, fixp->fx_subsy);
2879 fprintf (stderr, ">");
2881 fprintf (stderr, "\n");
2882 #ifdef TC_FIX_DATA_PRINT
2883 TC_FIX_DATA_PRINT (stderr, fixp);
2887 /* end of write.c */