1 /* write.c - emit .o file
2 Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 96, 97, 1998
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 TC_INIT_FIX_DATA(fixP);
193 as_where (&fixP->fx_file, &fixP->fx_line);
195 /* Usually, we want relocs sorted numerically, but while
196 comparing to older versions of gas that have relocs
197 reverse sorted, it is convenient to have this compile
198 time option. xoxorich. */
203 fixS **seg_fix_rootP = (frags_chained
204 ? &seg_info (now_seg)->fix_root
205 : &frchain_now->fix_root);
206 fixS **seg_fix_tailP = (frags_chained
207 ? &seg_info (now_seg)->fix_tail
208 : &frchain_now->fix_tail);
211 #ifdef REVERSE_SORT_RELOCS
213 fixP->fx_next = *seg_fix_rootP;
214 *seg_fix_rootP = fixP;
216 #else /* REVERSE_SORT_RELOCS */
218 fixP->fx_next = NULL;
221 (*seg_fix_tailP)->fx_next = fixP;
223 *seg_fix_rootP = fixP;
224 *seg_fix_tailP = fixP;
226 #endif /* REVERSE_SORT_RELOCS */
233 /* Create a fixup relative to a symbol (plus a constant). */
236 fix_new (frag, where, size, add_symbol, offset, pcrel, r_type)
237 fragS *frag; /* Which frag? */
238 int where; /* Where in that frag? */
239 int size; /* 1, 2, or 4 usually. */
240 symbolS *add_symbol; /* X_add_symbol. */
241 offsetT offset; /* X_add_number. */
242 int pcrel; /* TRUE if PC-relative relocation. */
244 bfd_reloc_code_real_type r_type; /* Relocation type */
246 int r_type; /* Relocation type */
249 return fix_new_internal (frag, where, size, add_symbol,
250 (symbolS *) NULL, offset, pcrel, r_type);
253 /* Create a fixup for an expression. Currently we only support fixups
254 for difference expressions. That is itself more than most object
255 file formats support anyhow. */
258 fix_new_exp (frag, where, size, exp, pcrel, r_type)
259 fragS *frag; /* Which frag? */
260 int where; /* Where in that frag? */
261 int size; /* 1, 2, or 4 usually. */
262 expressionS *exp; /* Expression. */
263 int pcrel; /* TRUE if PC-relative relocation. */
265 bfd_reloc_code_real_type r_type; /* Relocation type */
267 int r_type; /* Relocation type */
280 /* This comes up when _GLOBAL_OFFSET_TABLE_+(.-L0) is read, if
281 the difference expression cannot immediately be reduced. */
283 symbolS *stmp = make_expr_symbol (exp);
284 exp->X_op = O_symbol;
285 exp->X_op_symbol = 0;
286 exp->X_add_symbol = stmp;
287 exp->X_add_number = 0;
288 return fix_new_exp (frag, where, size, exp, pcrel, r_type);
292 add = exp->X_add_symbol;
293 off = exp->X_add_number;
295 #if defined(BFD_ASSEMBLER)
296 r_type = BFD_RELOC_RVA;
298 #if defined(TC_RVA_RELOC)
299 r_type = TC_RVA_RELOC;
301 as_fatal(_("rva not supported"));
307 sub = exp->X_add_symbol;
308 off = exp->X_add_number;
312 sub = exp->X_op_symbol;
315 add = exp->X_add_symbol;
318 off = exp->X_add_number;
322 add = make_expr_symbol (exp);
326 return fix_new_internal (frag, where, size, add, sub, off,
330 /* Append a string onto another string, bumping the pointer along. */
332 append (charPP, fromP, length)
335 unsigned long length;
337 /* Don't trust memcpy() of 0 chars. */
341 memcpy (*charPP, fromP, length);
345 #ifndef BFD_ASSEMBLER
346 int section_alignment[SEG_MAXIMUM_ORDINAL];
350 * This routine records the largest alignment seen for each segment.
351 * If the beginning of the segment is aligned on the worst-case
352 * boundary, all of the other alignments within it will work. At
353 * least one object format really uses this info.
356 record_alignment (seg, align)
357 /* Segment to which alignment pertains */
359 /* Alignment, as a power of 2 (e.g., 1 => 2-byte boundary, 2 => 4-byte
363 if (seg == absolute_section)
366 if ((unsigned int) align > bfd_get_section_alignment (stdoutput, seg))
367 bfd_set_section_alignment (stdoutput, seg, align);
369 if (align > section_alignment[(int) seg])
370 section_alignment[(int) seg] = align;
376 /* Reset the section indices after removing the gas created sections. */
379 renumber_sections (abfd, sec, countparg)
384 int *countp = (int *) countparg;
386 sec->index = *countp;
390 #endif /* defined (BFD_ASSEMBLER) */
392 #if defined (BFD_ASSEMBLER) || ! defined (BFD)
395 chain_frchains_together_1 (section, frchp)
397 struct frchain *frchp;
399 fragS dummy, *prev_frag = &dummy;
401 fixS fix_dummy, *prev_fix = &fix_dummy;
404 for (; frchp && frchp->frch_seg == section; frchp = frchp->frch_next)
406 prev_frag->fr_next = frchp->frch_root;
407 prev_frag = frchp->frch_last;
408 assert (prev_frag->fr_type != 0);
410 if (frchp->fix_root != (fixS *) NULL)
412 if (seg_info (section)->fix_root == (fixS *) NULL)
413 seg_info (section)->fix_root = frchp->fix_root;
414 prev_fix->fx_next = frchp->fix_root;
415 seg_info (section)->fix_tail = frchp->fix_tail;
416 prev_fix = frchp->fix_tail;
420 assert (prev_frag->fr_type != 0);
421 prev_frag->fr_next = 0;
430 chain_frchains_together (abfd, section, xxx)
431 bfd *abfd; /* unused */
433 PTR xxx; /* unused */
435 segment_info_type *info;
437 /* BFD may have introduced its own sections without using
438 subseg_new, so it is possible that seg_info is NULL. */
439 info = seg_info (section);
440 if (info != (segment_info_type *) NULL)
441 info->frchainP->frch_last
442 = chain_frchains_together_1 (section, info->frchainP);
444 /* Now that we've chained the frags together, we must add new fixups
445 to the segment, not to the frag chain. */
451 #if !defined (BFD) && !defined (BFD_ASSEMBLER)
454 remove_subsegs (head, seg, root, last)
460 *root = head->frch_root;
461 *last = chain_frchains_together_1 (seg, head);
466 #if defined (BFD_ASSEMBLER) || !defined (BFD)
470 cvt_frag_to_fill (sec, fragP)
475 cvt_frag_to_fill (headersP, sec, fragP)
476 object_headers *headersP;
481 switch (fragP->fr_type)
488 HANDLE_ALIGN (fragP);
490 know (fragP->fr_next != NULL);
491 fragP->fr_offset = (fragP->fr_next->fr_address
493 - fragP->fr_fix) / fragP->fr_var;
494 if (fragP->fr_offset < 0)
496 as_bad (_("attempt to .org/.space backwards? (%ld)"),
497 (long) fragP->fr_offset);
499 fragP->fr_type = rs_fill;
507 valueT value = S_GET_VALUE (fragP->fr_symbol);
510 size = output_leb128 (fragP->fr_literal + fragP->fr_fix, value,
513 fragP->fr_fix += size;
514 fragP->fr_type = rs_fill;
516 fragP->fr_offset = 0;
517 fragP->fr_symbol = NULL;
522 eh_frame_convert_frag (fragP);
525 case rs_machine_dependent:
527 md_convert_frag (stdoutput, sec, fragP);
529 md_convert_frag (headersP, sec, fragP);
532 assert (fragP->fr_next == NULL
533 || ((offsetT) (fragP->fr_next->fr_address - fragP->fr_address)
537 * After md_convert_frag, we make the frag into a ".space 0".
538 * Md_convert_frag() should set up any fixSs and constants
544 #ifndef WORKING_DOT_WORD
547 struct broken_word *lie;
549 if (fragP->fr_subtype)
551 fragP->fr_fix += md_short_jump_size;
552 for (lie = (struct broken_word *) (fragP->fr_symbol);
553 lie && lie->dispfrag == fragP;
554 lie = lie->next_broken_word)
556 fragP->fr_fix += md_long_jump_size;
564 BAD_CASE (fragP->fr_type);
569 #endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */
573 relax_and_size_seg (abfd, sec, xxx)
580 segment_info_type *seginfo;
582 valueT size, newsize;
584 subseg_change (sec, 0);
586 flags = bfd_get_section_flags (abfd, sec);
588 seginfo = seg_info (sec);
589 if (seginfo && seginfo->frchainP)
591 relax_segment (seginfo->frchainP->frch_root, sec);
592 for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next)
593 cvt_frag_to_fill (sec, fragp);
594 for (fragp = seginfo->frchainP->frch_root;
596 fragp = fragp->fr_next)
597 /* walk to last elt */;
598 size = fragp->fr_address + fragp->fr_fix;
603 if (size > 0 && ! seginfo->bss)
604 flags |= SEC_HAS_CONTENTS;
606 /* @@ This is just an approximation. */
607 if (seginfo && seginfo->fix_root)
611 x = bfd_set_section_flags (abfd, sec, flags);
614 newsize = md_section_align (sec, size);
615 x = bfd_set_section_size (abfd, sec, newsize);
618 /* If the size had to be rounded up, add some padding in the last
620 assert (newsize >= size);
623 fragS *last = seginfo->frchainP->frch_last;
624 fragp = seginfo->frchainP->frch_root;
625 while (fragp->fr_next != last)
626 fragp = fragp->fr_next;
627 last->fr_address = size;
628 fragp->fr_offset += newsize - size;
631 #ifdef tc_frob_section
632 tc_frob_section (sec);
634 #ifdef obj_frob_section
635 obj_frob_section (sec);
641 dump_section_relocs (abfd, sec, stream_)
646 FILE *stream = (FILE *) stream_;
647 segment_info_type *seginfo = seg_info (sec);
648 fixS *fixp = seginfo->fix_root;
653 fprintf (stream, "sec %s relocs:\n", sec->name);
656 symbolS *s = fixp->fx_addsy;
659 fprintf (stream, " %08x: %s(%s", fixp, S_GET_NAME (s),
660 s->bsym->section->name);
661 if (s->bsym->flags & BSF_SECTION_SYM)
663 fprintf (stream, " section sym");
665 fprintf (stream, "+%x", S_GET_VALUE (s));
668 fprintf (stream, "+%x", S_GET_VALUE (s));
669 fprintf (stream, ")+%x\n", fixp->fx_offset);
672 fprintf (stream, " %08x: type %d no sym\n", fixp, fixp->fx_r_type);
673 fixp = fixp->fx_next;
677 #define dump_section_relocs(ABFD,SEC,STREAM) ((void) 0)
680 #ifndef EMIT_SECTION_SYMBOLS
681 #define EMIT_SECTION_SYMBOLS 1
685 adjust_reloc_syms (abfd, sec, xxx)
690 segment_info_type *seginfo = seg_info (sec);
696 dump_section_relocs (abfd, sec, stderr);
698 for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next)
701 else if (fixp->fx_addsy)
707 fprintf (stderr, "\n\nadjusting fixup:\n");
711 sym = fixp->fx_addsy;
713 /* All symbols should have already been resolved at this
714 point. It is possible to see unresolved expression
715 symbols, though, since they are not in the regular symbol
717 if (sym != NULL && ! sym->sy_resolved)
718 resolve_symbol_value (sym, 1);
719 if (fixp->fx_subsy != NULL && ! fixp->fx_subsy->sy_resolved)
720 resolve_symbol_value (fixp->fx_subsy, 1);
722 /* If this symbol is equated to an undefined symbol, convert
723 the fixup to being against that symbol. */
724 if (sym->sy_value.X_op == O_symbol
725 && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym)))
727 fixp->fx_offset += sym->sy_value.X_add_number;
728 sym = sym->sy_value.X_add_symbol;
729 fixp->fx_addsy = sym;
732 symsec = S_GET_SEGMENT (sym);
734 if (sym != NULL && sym->sy_mri_common)
736 /* These symbols are handled specially in fixup_segment. */
740 if (bfd_is_abs_section (symsec))
742 /* The fixup_segment routine will not use this symbol in a
743 relocation unless TC_FORCE_RELOCATION returns 1. */
744 if (TC_FORCE_RELOCATION (fixp))
746 fixp->fx_addsy->sy_used_in_reloc = 1;
747 #ifdef UNDEFINED_DIFFERENCE_OK
748 if (fixp->fx_subsy != NULL)
749 fixp->fx_subsy->sy_used_in_reloc = 1;
755 /* If it's one of these sections, assume the symbol is
756 definitely going to be output. The code in
757 md_estimate_size_before_relax in tc-mips.c uses this test
758 as well, so if you change this code you should look at that
760 if (bfd_is_und_section (symsec)
761 || bfd_is_com_section (symsec))
763 fixp->fx_addsy->sy_used_in_reloc = 1;
764 #ifdef UNDEFINED_DIFFERENCE_OK
765 /* We have the difference of an undefined symbol and some
766 other symbol. Make sure to mark the other symbol as used
767 in a relocation so that it will always be output. */
769 fixp->fx_subsy->sy_used_in_reloc = 1;
774 /* Don't try to reduce relocs which refer to .linkonce
775 sections. It can lead to confusion when a debugging
776 section refers to a .linkonce section. I hope this will
777 always be correct. */
784 if ((bfd_get_section_flags (stdoutput, symsec) & SEC_LINK_ONCE)
789 /* The GNU toolchain uses an extension for ELF: a section
790 beginning with the magic string .gnu.linkonce is a
792 if (strncmp (segment_name (symsec), ".gnu.linkonce",
793 sizeof ".gnu.linkonce" - 1) == 0)
799 fixp->fx_addsy->sy_used_in_reloc = 1;
800 #ifdef UNDEFINED_DIFFERENCE_OK
801 if (fixp->fx_subsy != NULL)
802 fixp->fx_subsy->sy_used_in_reloc = 1;
808 /* Since we're reducing to section symbols, don't attempt to reduce
809 anything that's already using one. */
810 if (sym->bsym->flags & BSF_SECTION_SYM)
812 fixp->fx_addsy->sy_used_in_reloc = 1;
816 /* Is there some other reason we can't adjust this one? (E.g.,
817 call/bal links in i960-bout symbols.) */
818 #ifdef obj_fix_adjustable
819 if (! obj_fix_adjustable (fixp))
821 fixp->fx_addsy->sy_used_in_reloc = 1;
826 /* Is there some other (target cpu dependent) reason we can't adjust
827 this one? (E.g. relocations involving function addresses on
829 #ifdef tc_fix_adjustable
830 if (! tc_fix_adjustable (fixp))
832 fixp->fx_addsy->sy_used_in_reloc = 1;
837 /* If the section symbol isn't going to be output, the relocs
838 at least should still work. If not, figure out what to do
839 when we run into that case.
841 We refetch the segment when calling section_symbol, rather
842 than using symsec, because S_GET_VALUE may wind up changing
843 the section when it calls resolve_symbol_value. */
844 fixp->fx_offset += S_GET_VALUE (sym);
845 fixp->fx_addsy = section_symbol (S_GET_SEGMENT (sym));
846 fixp->fx_addsy->sy_used_in_reloc = 1;
851 #if 1/*def RELOC_REQUIRES_SYMBOL*/
854 /* There was no symbol required by this relocation. However,
855 BFD doesn't really handle relocations without symbols well.
856 (At least, the COFF support doesn't.) So for now we fake up
857 a local symbol in the absolute section. */
859 fixp->fx_addsy = section_symbol (absolute_section);
860 /* fixp->fx_addsy->sy_used_in_reloc = 1; */
864 dump_section_relocs (abfd, sec, stderr);
868 write_relocs (abfd, sec, xxx)
873 segment_info_type *seginfo = seg_info (sec);
880 /* If seginfo is NULL, we did not create this section; don't do
885 fixup_segment (seginfo->fix_root, sec);
888 for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next)
891 #ifndef RELOC_EXPANSION_POSSIBLE
892 /* Set up reloc information as well. */
893 relocs = (arelent **) xmalloc (n * sizeof (arelent *));
894 memset ((char*)relocs, 0, n * sizeof (arelent*));
897 for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next)
900 bfd_reloc_status_type s;
909 /* If this is an undefined symbol which was equated to another
910 symbol, then use generate the reloc against the latter symbol
911 rather than the former. */
912 sym = fixp->fx_addsy;
913 while (sym->sy_value.X_op == O_symbol
914 && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym)))
918 /* We must avoid looping, as that can occur with a badly
920 n = sym->sy_value.X_add_symbol;
923 fixp->fx_offset += sym->sy_value.X_add_number;
926 fixp->fx_addsy = sym;
928 reloc = tc_gen_reloc (sec, fixp);
936 /* This test is triggered inappropriately for the SH. */
937 if (fixp->fx_where + fixp->fx_size
938 > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset)
942 s = bfd_install_relocation (stdoutput, reloc,
943 fixp->fx_frag->fr_literal,
944 fixp->fx_frag->fr_address,
950 case bfd_reloc_overflow:
951 as_bad_where (fixp->fx_file, fixp->fx_line, _("relocation overflow"));
954 as_fatal (_("%s:%u: bad return from bfd_install_relocation"),
955 fixp->fx_file, fixp->fx_line);
960 n = n * MAX_RELOC_EXPANSION;
961 /* Set up reloc information as well. */
962 relocs = (arelent **) xmalloc (n * sizeof (arelent *));
965 for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next)
969 bfd_reloc_status_type s;
979 /* If this is an undefined symbol which was equated to another
980 symbol, then use generate the reloc against the latter symbol
981 rather than the former. */
982 sym = fixp->fx_addsy;
983 while (sym->sy_value.X_op == O_symbol
984 && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym)))
985 sym = sym->sy_value.X_add_symbol;
986 fixp->fx_addsy = sym;
988 reloc = tc_gen_reloc (sec, fixp);
990 for (j = 0; reloc[j]; j++)
992 relocs[i++] = reloc[j];
995 data = fixp->fx_frag->fr_literal + fixp->fx_where;
996 if (fixp->fx_where + fixp->fx_size
997 > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset)
998 as_bad_where (fixp->fx_file, fixp->fx_line,
999 _("internal error: fixup not contained within frag"));
1000 for (j = 0; reloc[j]; j++)
1002 s = bfd_install_relocation (stdoutput, reloc[j],
1003 fixp->fx_frag->fr_literal,
1004 fixp->fx_frag->fr_address,
1010 case bfd_reloc_overflow:
1011 as_bad_where (fixp->fx_file, fixp->fx_line,
1012 _("relocation overflow"));
1015 as_fatal (_("%s:%u: bad return from bfd_install_relocation"),
1016 fixp->fx_file, fixp->fx_line);
1027 sympp = bfd_get_outsymbols (stdoutput);
1028 nsyms = bfd_get_symcount (stdoutput);
1029 for (i = 0; i < n; i++)
1030 if (((*relocs[i]->sym_ptr_ptr)->flags & BSF_SECTION_SYM) == 0)
1032 for (j = 0; j < nsyms; j++)
1033 if (sympp[j] == *relocs[i]->sym_ptr_ptr)
1042 bfd_set_reloc (stdoutput, sec, relocs, n);
1044 bfd_set_section_flags (abfd, sec,
1045 (bfd_get_section_flags (abfd, sec)
1046 & (flagword) ~SEC_RELOC));
1053 fprintf (stderr, "relocs for sec %s\n", sec->name);
1054 for (i = 0; i < n; i++)
1057 s = *r->sym_ptr_ptr;
1058 fprintf (stderr, " reloc %2d @%08x off %4x : sym %-10s addend %x\n",
1059 i, r, r->address, s->name, r->addend);
1066 write_contents (abfd, sec, xxx)
1071 segment_info_type *seginfo = seg_info (sec);
1072 unsigned long offset = 0;
1075 /* Write out the frags. */
1077 || ! (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS))
1080 for (f = seginfo->frchainP->frch_root;
1085 unsigned long fill_size;
1089 assert (f->fr_type == rs_fill);
1092 x = bfd_set_section_contents (stdoutput, sec,
1093 f->fr_literal, (file_ptr) offset,
1094 (bfd_size_type) f->fr_fix);
1097 bfd_perror (stdoutput->filename);
1098 as_perror (_("FATAL: Can't write %s"), stdoutput->filename);
1099 exit (EXIT_FAILURE);
1101 offset += f->fr_fix;
1103 fill_literal = f->fr_literal + f->fr_fix;
1104 fill_size = f->fr_var;
1105 count = f->fr_offset;
1106 assert (count >= 0);
1107 if (fill_size && count)
1110 if (fill_size > sizeof(buf))
1112 /* Do it the old way. Can this ever happen? */
1115 x = bfd_set_section_contents (stdoutput, sec,
1118 (bfd_size_type) fill_size);
1121 bfd_perror (stdoutput->filename);
1122 as_perror (_("FATAL: Can't write %s"), stdoutput->filename);
1123 exit (EXIT_FAILURE);
1125 offset += fill_size;
1130 /* Build a buffer full of fill objects and output it as
1131 often as necessary. This saves on the overhead of
1132 potentially lots of bfd_set_section_contents calls. */
1136 n_per_buf = sizeof (buf);
1137 memset (buf, *fill_literal, n_per_buf);
1142 n_per_buf = sizeof(buf)/fill_size;
1143 for (i = n_per_buf, bufp = buf; i; i--, bufp += fill_size)
1144 memcpy(bufp, fill_literal, fill_size);
1146 for (; count > 0; count -= n_per_buf)
1148 n_per_buf = n_per_buf > count ? count : n_per_buf;
1149 x = bfd_set_section_contents (stdoutput, sec,
1150 buf, (file_ptr) offset,
1151 (bfd_size_type) n_per_buf * fill_size);
1153 as_fatal (_("Cannot write to output file."));
1154 offset += n_per_buf * fill_size;
1162 #if defined(BFD_ASSEMBLER) || (!defined (BFD) && !defined(OBJ_AOUT))
1164 merge_data_into_text ()
1166 #if defined(BFD_ASSEMBLER) || defined(MANY_SEGMENTS)
1167 seg_info (text_section)->frchainP->frch_last->fr_next =
1168 seg_info (data_section)->frchainP->frch_root;
1169 seg_info (text_section)->frchainP->frch_last =
1170 seg_info (data_section)->frchainP->frch_last;
1171 seg_info (data_section)->frchainP = 0;
1175 text_last_frag->fr_next = data_frag_root;
1176 text_last_frag = data_last_frag;
1177 data_last_frag = NULL;
1178 data_frag_root = NULL;
1181 for (tmp = text_fix_root; tmp->fx_next; tmp = tmp->fx_next);;
1182 tmp->fx_next = data_fix_root;
1183 text_fix_tail = data_fix_tail;
1186 text_fix_root = data_fix_root;
1187 data_fix_root = NULL;
1190 #endif /* BFD_ASSEMBLER || (! BFD && ! OBJ_AOUT) */
1192 #if !defined (BFD_ASSEMBLER) && !defined (BFD)
1194 relax_and_size_all_segments ()
1198 relax_segment (text_frag_root, SEG_TEXT);
1199 relax_segment (data_frag_root, SEG_DATA);
1200 relax_segment (bss_frag_root, SEG_BSS);
1202 * Now the addresses of frags are correct within the segment.
1205 know (text_last_frag->fr_type == rs_fill && text_last_frag->fr_offset == 0);
1206 H_SET_TEXT_SIZE (&headers, text_last_frag->fr_address);
1207 text_last_frag->fr_address = H_GET_TEXT_SIZE (&headers);
1210 * Join the 2 segments into 1 huge segment.
1211 * To do this, re-compute every rn_address in the SEG_DATA frags.
1212 * Then join the data frags after the text frags.
1214 * Determine a_data [length of data segment].
1218 register relax_addressT slide;
1220 know ((text_last_frag->fr_type == rs_fill) && (text_last_frag->fr_offset == 0));
1222 H_SET_DATA_SIZE (&headers, data_last_frag->fr_address);
1223 data_last_frag->fr_address = H_GET_DATA_SIZE (&headers);
1224 slide = H_GET_TEXT_SIZE (&headers); /* & in file of the data segment. */
1226 #define RoundUp(N,S) (((N)+(S)-1)&-(S))
1227 /* For b.out: If the data section has a strict alignment
1228 requirement, its load address in the .o file will be
1229 rounded up from the size of the text section. These
1230 two values are *not* the same! Similarly for the bss
1232 slide = RoundUp (slide, 1 << section_alignment[SEG_DATA]);
1235 for (fragP = data_frag_root; fragP; fragP = fragP->fr_next)
1237 fragP->fr_address += slide;
1238 } /* for each data frag */
1240 know (text_last_frag != 0);
1241 text_last_frag->fr_next = data_frag_root;
1245 H_SET_DATA_SIZE (&headers, 0);
1249 /* See above comments on b.out data section address. */
1252 if (data_last_frag == 0)
1253 bss_vma = H_GET_TEXT_SIZE (&headers);
1255 bss_vma = data_last_frag->fr_address;
1256 bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]);
1257 bss_address_frag.fr_address = bss_vma;
1259 #else /* ! OBJ_BOUT */
1260 bss_address_frag.fr_address = (H_GET_TEXT_SIZE (&headers) +
1261 H_GET_DATA_SIZE (&headers));
1263 #endif /* ! OBJ_BOUT */
1265 /* Slide all the frags */
1268 relax_addressT slide = bss_address_frag.fr_address;
1270 for (fragP = bss_frag_root; fragP; fragP = fragP->fr_next)
1272 fragP->fr_address += slide;
1273 } /* for each bss frag */
1277 H_SET_BSS_SIZE (&headers,
1278 bss_last_frag->fr_address - bss_frag_root->fr_address);
1280 H_SET_BSS_SIZE (&headers, 0);
1282 #endif /* ! BFD_ASSEMBLER && ! BFD */
1284 #if defined (BFD_ASSEMBLER) || !defined (BFD)
1286 #ifdef BFD_ASSEMBLER
1294 extern PTR bfd_alloc PARAMS ((bfd *, size_t));
1296 /* Count symbols. We can't rely on a count made by the loop in
1297 write_object_file, because *_frob_file may add a new symbol or
1300 for (symp = symbol_rootP; symp; symp = symbol_next (symp))
1307 asympp = (asymbol **) bfd_alloc (stdoutput,
1308 nsyms * sizeof (asymbol *));
1309 symp = symbol_rootP;
1310 for (i = 0; i < nsyms; i++, symp = symbol_next (symp))
1312 asympp[i] = symp->bsym;
1318 result = bfd_set_symtab (stdoutput, asympp, nsyms);
1319 assert (result == true);
1320 symbol_table_frozen = 1;
1324 /* Finish the subsegments. After every sub-segment, we fake an
1325 ".align ...". This conforms to BSD4.2 brane-damage. We then fake
1326 ".fill 0" because that is the kind of frag that requires least
1327 thought. ".align" frags like to have a following frag since that
1328 makes calculating their intended length trivial. */
1330 #ifndef SUB_SEGMENT_ALIGN
1331 #ifdef BFD_ASSEMBLER
1332 #define SUB_SEGMENT_ALIGN(SEG) (0)
1334 #define SUB_SEGMENT_ALIGN(SEG) (2)
1341 struct frchain *frchainP;
1343 for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next)
1345 subseg_set (frchainP->frch_seg, frchainP->frch_subseg);
1346 frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE, 0);
1348 /* frag_align will have left a new frag.
1349 Use this last frag for an empty ".fill".
1351 For this segment ...
1352 Create a last frag. Do not leave a "being filled in frag". */
1354 frag_wane (frag_now);
1355 frag_now->fr_fix = 0;
1356 know (frag_now->fr_next == NULL);
1360 /* Write the object file. */
1363 write_object_file ()
1365 #if ! defined (BFD_ASSEMBLER) || ! defined (WORKING_DOT_WORD)
1366 fragS *fragP; /* Track along all frags. */
1369 /* Do we really want to write it? */
1371 int n_warns, n_errs;
1372 n_warns = had_warnings ();
1373 n_errs = had_errors ();
1374 /* The -Z flag indicates that an object file should be generated,
1375 regardless of warnings and errors. */
1376 if (flag_always_generate_output)
1378 if (n_warns || n_errs)
1379 as_warn (_("%d error%s, %d warning%s, generating bad object file.\n"),
1380 n_errs, n_errs == 1 ? "" : "s",
1381 n_warns, n_warns == 1 ? "" : "s");
1386 as_fatal (_("%d error%s, %d warning%s, no object file generated.\n"),
1387 n_errs, n_errs == 1 ? "" : "s",
1388 n_warns, n_warns == 1 ? "" : "s");
1393 /* Under VMS we try to be compatible with VAX-11 "C". Thus, we call
1394 a routine to check for the definition of the procedure "_main",
1395 and if so -- fix it up so that it can be program entry point. */
1396 vms_check_for_main ();
1397 #endif /* OBJ_VMS */
1399 /* From now on, we don't care about sub-segments. Build one frag chain
1400 for each segment. Linked thru fr_next. */
1402 #ifdef BFD_ASSEMBLER
1403 /* Remove the sections created by gas for its own purposes. */
1405 asection **seclist, *sec;
1408 seclist = &stdoutput->sections;
1409 while (seclist && *seclist)
1412 while (sec == reg_section || sec == expr_section)
1416 stdoutput->section_count--;
1421 seclist = &(*seclist)->next;
1424 bfd_map_over_sections (stdoutput, renumber_sections, &i);
1427 bfd_map_over_sections (stdoutput, chain_frchains_together, (char *) 0);
1429 remove_subsegs (frchain_root, SEG_TEXT, &text_frag_root, &text_last_frag);
1430 remove_subsegs (data0_frchainP, SEG_DATA, &data_frag_root, &data_last_frag);
1431 remove_subsegs (bss0_frchainP, SEG_BSS, &bss_frag_root, &bss_last_frag);
1434 /* We have two segments. If user gave -R flag, then we must put the
1435 data frags into the text segment. Do this before relaxing so
1436 we know to take advantage of -R and make shorter addresses. */
1437 #if !defined (OBJ_AOUT) || defined (BFD_ASSEMBLER)
1438 if (flag_readonly_data_in_text)
1440 merge_data_into_text ();
1444 #ifdef BFD_ASSEMBLER
1445 bfd_map_over_sections (stdoutput, relax_and_size_seg, (char *) 0);
1447 relax_and_size_all_segments ();
1448 #endif /* BFD_ASSEMBLER */
1450 #ifndef BFD_ASSEMBLER
1453 * Crawl the symbol chain.
1455 * For each symbol whose value depends on a frag, take the address of
1456 * that frag and subsume it into the value of the symbol.
1457 * After this, there is just one way to lookup a symbol value.
1458 * Values are left in their final state for object file emission.
1459 * We adjust the values of 'L' local symbols, even if we do
1460 * not intend to emit them to the object file, because their values
1461 * are needed for fix-ups.
1463 * Unless we saw a -L flag, remove all symbols that begin with 'L'
1464 * from the symbol chain. (They are still pointed to by the fixes.)
1466 * Count the remaining symbols.
1467 * Assign a symbol number to each symbol.
1468 * Count the number of string-table chars we will emit.
1469 * Put this info into the headers as appropriate.
1472 know (zero_address_frag.fr_address == 0);
1473 string_byte_count = sizeof (string_byte_count);
1475 obj_crawl_symbol_chain (&headers);
1477 if (string_byte_count == sizeof (string_byte_count))
1478 string_byte_count = 0;
1480 H_SET_STRING_SIZE (&headers, string_byte_count);
1483 * Addresses of frags now reflect addresses we use in the object file.
1484 * Symbol values are correct.
1485 * Scan the frags, converting any ".org"s and ".align"s to ".fill"s.
1486 * Also converting any machine-dependent frags using md_convert_frag();
1488 subseg_change (SEG_TEXT, 0);
1490 for (fragP = text_frag_root; fragP; fragP = fragP->fr_next)
1492 /* At this point we have linked all the frags into a single
1493 chain. However, cvt_frag_to_fill may call md_convert_frag
1494 which may call fix_new. We need to ensure that fix_new adds
1495 the fixup to the right section. */
1496 if (fragP == data_frag_root)
1497 subseg_change (SEG_DATA, 0);
1499 cvt_frag_to_fill (&headers, SEG_TEXT, fragP);
1501 /* Some assert macros don't work with # directives mixed in. */
1503 if (!(fragP->fr_next == NULL
1505 || fragP->fr_next == data_frag_root
1507 || ((fragP->fr_next->fr_address - fragP->fr_address)
1508 == (fragP->fr_fix + fragP->fr_offset * fragP->fr_var))))
1512 #endif /* ! BFD_ASSEMBLER */
1514 #ifndef WORKING_DOT_WORD
1516 struct broken_word *lie;
1517 struct broken_word **prevP;
1519 prevP = &broken_words;
1520 for (lie = broken_words; lie; lie = lie->next_broken_word)
1525 exp.X_op = O_subtract;
1526 exp.X_add_symbol = lie->add;
1527 exp.X_op_symbol = lie->sub;
1528 exp.X_add_number = lie->addnum;
1529 #ifdef BFD_ASSEMBLER
1530 #ifdef TC_CONS_FIX_NEW
1531 TC_CONS_FIX_NEW (lie->frag,
1532 lie->word_goes_here - lie->frag->fr_literal,
1535 fix_new_exp (lie->frag,
1536 lie->word_goes_here - lie->frag->fr_literal,
1537 2, &exp, 0, BFD_RELOC_16);
1540 #if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE)
1541 fix_new_exp (lie->frag,
1542 lie->word_goes_here - lie->frag->fr_literal,
1543 2, &exp, 0, NO_RELOC);
1546 fix_new_ns32k_exp (lie->frag,
1547 lie->word_goes_here - lie->frag->fr_literal,
1548 2, &exp, 0, 0, 2, 0, 0);
1550 fix_new_exp (lie->frag,
1551 lie->word_goes_here - lie->frag->fr_literal,
1553 #endif /* TC_NS32K */
1554 #endif /* TC_SPARC|TC_A29K|NEED_FX_R_TYPE */
1555 #endif /* BFD_ASSEMBLER */
1556 *prevP = lie->next_broken_word;
1559 prevP = &(lie->next_broken_word);
1561 for (lie = broken_words; lie;)
1563 struct broken_word *untruth;
1565 addressT table_addr;
1566 addressT from_addr, to_addr;
1569 fragP = lie->dispfrag;
1571 /* Find out how many broken_words go here. */
1573 for (untruth = lie; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word)
1574 if (untruth->added == 1)
1577 table_ptr = lie->dispfrag->fr_opcode;
1578 table_addr = lie->dispfrag->fr_address + (table_ptr - lie->dispfrag->fr_literal);
1579 /* Create the jump around the long jumps. This is a short
1580 jump from table_ptr+0 to table_ptr+n*long_jump_size. */
1581 from_addr = table_addr;
1582 to_addr = table_addr + md_short_jump_size + n * md_long_jump_size;
1583 md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add);
1584 table_ptr += md_short_jump_size;
1585 table_addr += md_short_jump_size;
1587 for (m = 0; lie && lie->dispfrag == fragP; m++, lie = lie->next_broken_word)
1589 if (lie->added == 2)
1591 /* Patch the jump table */
1592 /* This is the offset from ??? to table_ptr+0 */
1593 to_addr = table_addr - S_GET_VALUE (lie->sub);
1594 #ifdef BFD_ASSEMBLER
1595 to_addr -= lie->sub->sy_frag->fr_address;
1597 md_number_to_chars (lie->word_goes_here, to_addr, 2);
1598 for (untruth = lie->next_broken_word; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word)
1600 if (untruth->use_jump == lie)
1601 md_number_to_chars (untruth->word_goes_here, to_addr, 2);
1604 /* Install the long jump */
1605 /* this is a long jump from table_ptr+0 to the final target */
1606 from_addr = table_addr;
1607 to_addr = S_GET_VALUE (lie->add) + lie->addnum;
1608 #ifdef BFD_ASSEMBLER
1609 to_addr += lie->add->sy_frag->fr_address;
1611 md_create_long_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add);
1612 table_ptr += md_long_jump_size;
1613 table_addr += md_long_jump_size;
1617 #endif /* not WORKING_DOT_WORD */
1619 #ifndef BFD_ASSEMBLER
1622 char *the_object_file;
1623 long object_file_size;
1625 * Scan every FixS performing fixups. We had to wait until now to do
1626 * this because md_convert_frag() may have made some fixSs.
1630 subseg_change (SEG_TEXT, 0);
1631 trsize = md_reloc_size * fixup_segment (text_fix_root, SEG_TEXT);
1632 subseg_change (SEG_DATA, 0);
1633 drsize = md_reloc_size * fixup_segment (data_fix_root, SEG_DATA);
1634 H_SET_RELOCATION_SIZE (&headers, trsize, drsize);
1636 /* FIXME move this stuff into the pre-write-hook */
1637 H_SET_MAGIC_NUMBER (&headers, magic_number_for_object_file);
1638 H_SET_ENTRY_POINT (&headers, 0);
1640 obj_pre_write_hook (&headers); /* extra coff stuff */
1642 object_file_size = H_GET_FILE_SIZE (&headers);
1643 next_object_file_charP = the_object_file = xmalloc (object_file_size);
1645 output_file_create (out_file_name);
1647 obj_header_append (&next_object_file_charP, &headers);
1649 know ((next_object_file_charP - the_object_file) == H_GET_HEADER_SIZE (&headers));
1654 for (fragP = text_frag_root; fragP; fragP = fragP->fr_next)
1656 register long count;
1657 register char *fill_literal;
1658 register long fill_size;
1661 know (fragP->fr_type == rs_fill);
1662 append (&next_object_file_charP, fragP->fr_literal, (unsigned long) fragP->fr_fix);
1663 fill_literal = fragP->fr_literal + fragP->fr_fix;
1664 fill_size = fragP->fr_var;
1665 know (fragP->fr_offset >= 0);
1667 for (count = fragP->fr_offset; count; count--)
1669 append (&next_object_file_charP, fill_literal, (unsigned long) fill_size);
1672 } /* for each code frag. */
1674 know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers)));
1679 obj_emit_relocations (&next_object_file_charP, text_fix_root, (relax_addressT) 0);
1680 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)));
1682 /* Make addresses in data relocation directives relative to beginning of
1683 * first data fragment, not end of last text fragment: alignment of the
1684 * start of the data segment may place a gap between the segments.
1686 obj_emit_relocations (&next_object_file_charP, data_fix_root, data0_frchainP->frch_root->fr_address);
1688 obj_emit_relocations (&next_object_file_charP, data_fix_root, text_last_frag->fr_address);
1689 #endif /* TC_I960 */
1691 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)));
1694 * Emit line number entries.
1696 OBJ_EMIT_LINENO (&next_object_file_charP, lineno_rootP, the_object_file);
1697 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)));
1702 obj_emit_symbols (&next_object_file_charP, symbol_rootP);
1703 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)));
1709 if (string_byte_count > 0)
1711 obj_emit_strings (&next_object_file_charP);
1712 } /* only if we have a string table */
1715 bfd_seek (stdoutput, 0, 0);
1716 bfd_write (the_object_file, 1, object_file_size, stdoutput);
1719 /* Write the data to the file */
1720 output_file_append (the_object_file, object_file_size, out_file_name);
1721 free (the_object_file);
1723 } /* non vms output */
1726 * Now do the VMS-dependent part of writing the object file
1728 vms_write_object_file (H_GET_TEXT_SIZE (&headers),
1729 H_GET_DATA_SIZE (&headers),
1730 H_GET_BSS_SIZE (&headers),
1731 text_frag_root, data_frag_root);
1732 #endif /* OBJ_VMS */
1733 #else /* BFD_ASSEMBLER */
1735 /* Resolve symbol values. This needs to be done before processing
1741 for (symp = symbol_rootP; symp; symp = symbol_next (symp))
1742 if (!symp->sy_resolved)
1743 resolve_symbol_value (symp, 1);
1748 #ifdef tc_frob_file_before_adjust
1749 tc_frob_file_before_adjust ();
1751 #ifdef obj_frob_file_before_adjust
1752 obj_frob_file_before_adjust ();
1755 bfd_map_over_sections (stdoutput, adjust_reloc_syms, (char *)0);
1757 /* Set up symbol table, and write it out. */
1762 for (symp = symbol_rootP; symp; symp = symbol_next (symp))
1767 if (symp->sy_mri_common)
1769 if (S_IS_EXTERNAL (symp))
1770 as_bad (_("%s: global symbols not supported in common sections"),
1772 symbol_remove (symp, &symbol_rootP, &symbol_lastP);
1776 name = S_GET_NAME (symp);
1779 const char *name2 = decode_local_label_name ((char *)S_GET_NAME (symp));
1780 /* They only differ if `name' is a fb or dollar local
1782 if (name2 != name && ! S_IS_DEFINED (symp))
1783 as_bad (_("local label %s is not defined"), name2);
1786 /* Do it again, because adjust_reloc_syms might introduce
1787 more symbols. They'll probably only be section symbols,
1788 but they'll still need to have the values computed. */
1789 if (! symp->sy_resolved)
1791 if (symp->sy_value.X_op == O_constant)
1793 /* This is the normal case; skip the call. */
1796 + symp->sy_frag->fr_address));
1797 symp->sy_resolved = 1;
1800 resolve_symbol_value (symp, 1);
1803 /* Skip symbols which were equated to undefined or common
1805 if (symp->sy_value.X_op == O_symbol
1806 && (! S_IS_DEFINED (symp) || S_IS_COMMON (symp)))
1808 symbol_remove (symp, &symbol_rootP, &symbol_lastP);
1812 /* So far, common symbols have been treated like undefined symbols.
1813 Put them in the common section now. */
1814 if (S_IS_DEFINED (symp) == 0
1815 && S_GET_VALUE (symp) != 0)
1816 S_SET_SEGMENT (symp, bfd_com_section_ptr);
1818 printf ("symbol `%s'\n\t@%x: value=%d flags=%x seg=%s\n",
1819 S_GET_NAME (symp), symp,
1822 segment_name (symp->bsym->section));
1825 #ifdef obj_frob_symbol
1826 obj_frob_symbol (symp, punt);
1828 #ifdef tc_frob_symbol
1829 if (! punt || symp->sy_used_in_reloc)
1830 tc_frob_symbol (symp, punt);
1833 /* If we don't want to keep this symbol, splice it out of
1834 the chain now. If EMIT_SECTION_SYMBOLS is 0, we never
1835 want section symbols. Otherwise, we skip local symbols
1836 and symbols that the frob_symbol macros told us to punt,
1837 but we keep such symbols if they are used in relocs. */
1838 if ((! EMIT_SECTION_SYMBOLS
1839 && (symp->bsym->flags & BSF_SECTION_SYM) != 0)
1840 /* Note that S_IS_EXTERN and S_IS_LOCAL are not always
1841 opposites. Sometimes the former checks flags and the
1842 latter examines the name... */
1843 || (!S_IS_EXTERN (symp)
1844 && (S_IS_LOCAL (symp) || punt)
1845 && ! symp->sy_used_in_reloc))
1847 symbol_remove (symp, &symbol_rootP, &symbol_lastP);
1848 /* After symbol_remove, symbol_next(symp) still returns
1849 the one that came after it in the chain. So we don't
1850 need to do any extra cleanup work here. */
1855 /* Make sure we really got a value for the symbol. */
1856 if (! symp->sy_resolved)
1858 as_bad (_("can't resolve value for symbol \"%s\""),
1860 symp->sy_resolved = 1;
1863 /* Set the value into the BFD symbol. Up til now the value
1864 has only been kept in the gas symbolS struct. */
1865 symp->bsym->value = S_GET_VALUE (symp);
1871 /* Now do any format-specific adjustments to the symbol table, such
1872 as adding file symbols. */
1873 #ifdef tc_adjust_symtab
1874 tc_adjust_symtab ();
1876 #ifdef obj_adjust_symtab
1877 obj_adjust_symtab ();
1880 /* Now that all the sizes are known, and contents correct, we can
1881 start writing to the file. */
1884 /* If *_frob_file changes the symbol value at this point, it is
1885 responsible for moving the changed value into symp->bsym->value
1886 as well. Hopefully all symbol value changing can be done in
1891 #ifdef obj_frob_file
1895 bfd_map_over_sections (stdoutput, write_relocs, (char *) 0);
1897 #ifdef tc_frob_file_after_relocs
1898 tc_frob_file_after_relocs ();
1900 #ifdef obj_frob_file_after_relocs
1901 obj_frob_file_after_relocs ();
1904 bfd_map_over_sections (stdoutput, write_contents, (char *) 0);
1905 #endif /* BFD_ASSEMBLER */
1912 * Now we have a segment, not a crowd of sub-segments, we can make fr_address
1917 * After this, all frags in this segment have addresses that are correct
1918 * within the segment. Since segments live in different file addresses,
1919 * these frag addresses may not be the same as final object-file addresses.
1922 #ifdef TC_GENERIC_RELAX_TABLE
1924 static int is_dnrange PARAMS ((fragS *, fragS *));
1926 /* Subroutines of relax_segment. */
1932 for (; f1; f1 = f1->fr_next)
1933 if (f1->fr_next == f2)
1938 /* Relax a fragment by scanning TC_GENERIC_RELAX_TABLE. */
1941 relax_frag (fragP, stretch)
1945 const relax_typeS *this_type;
1946 const relax_typeS *start_type;
1947 relax_substateT next_state;
1948 relax_substateT this_state;
1949 long aim, target, growth;
1950 symbolS *symbolP = fragP->fr_symbol;
1951 long offset = fragP->fr_offset;
1952 /* Recompute was_address by undoing "+= stretch" done by relax_segment. */
1953 unsigned long was_address = fragP->fr_address - stretch;
1954 unsigned long address = fragP->fr_address;
1955 const relax_typeS *table = TC_GENERIC_RELAX_TABLE;
1957 this_state = fragP->fr_subtype;
1958 start_type = this_type = table + this_state;
1963 #ifndef DIFF_EXPR_OK
1964 #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER)
1965 know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
1966 || (S_GET_SEGMENT (symbolP) == SEG_DATA)
1967 || (S_GET_SEGMENT (symbolP) == SEG_BSS)
1968 || (S_GET_SEGMENT (symbolP) == SEG_TEXT));
1970 know (symbolP->sy_frag);
1972 know (!(S_GET_SEGMENT (symbolP) == absolute_section)
1973 || symbolP->sy_frag == &zero_address_frag);
1975 S_GET_VALUE (symbolP)
1976 + symbolP->sy_frag->fr_address;
1978 /* If frag has yet to be reached on this pass,
1979 assume it will move by STRETCH just as we did.
1980 If this is not so, it will be because some frag
1981 between grows, and that will force another pass.
1983 Beware zero-length frags.
1985 There should be a faster way to do this. */
1987 if (symbolP->sy_frag->fr_address >= was_address
1988 && is_dnrange (fragP, symbolP->sy_frag))
1994 aim = target - address - fragP->fr_fix;
1995 #ifdef TC_PCREL_ADJUST
1996 /* Currently only the ns32k family needs this */
1997 aim += TC_PCREL_ADJUST(fragP);
1999 /* This machine doesn't want to use pcrel_adjust.
2000 In that case, pcrel_adjust should be zero. */
2001 /* assert (fragP->fr_targ.ns32k.pcrel_adjust == 0);*/
2003 #ifdef md_prepare_relax_scan /* formerly called M68K_AIM_KLUDGE */
2004 md_prepare_relax_scan (fragP, address, aim, this_state, this_type);
2009 /* Look backwards. */
2010 for (next_state = this_type->rlx_more; next_state;)
2011 if (aim >= this_type->rlx_backward)
2015 /* Grow to next state. */
2016 this_state = next_state;
2017 this_type = table + this_state;
2018 next_state = this_type->rlx_more;
2023 /* Look forwards. */
2024 for (next_state = this_type->rlx_more; next_state;)
2025 if (aim <= this_type->rlx_forward)
2029 /* Grow to next state. */
2030 this_state = next_state;
2031 this_type = table + this_state;
2032 next_state = this_type->rlx_more;
2036 growth = this_type->rlx_length - start_type->rlx_length;
2038 fragP->fr_subtype = this_state;
2042 #endif /* defined (TC_GENERIC_RELAX_TABLE) */
2044 /* Relax_align. Advance location counter to next address that has 'alignment'
2045 lowest order bits all 0s, return size of adjustment made. */
2046 static relax_addressT
2047 relax_align (address, alignment)
2048 register relax_addressT address; /* Address now. */
2049 register int alignment; /* Alignment (binary). */
2051 relax_addressT mask;
2052 relax_addressT new_address;
2054 mask = ~((~0) << alignment);
2055 new_address = (address + mask) & (~mask);
2056 #ifdef LINKER_RELAXING_SHRINKS_ONLY
2058 /* We must provide lots of padding, so the linker can discard it
2059 when needed. The linker will not add extra space, ever. */
2060 new_address += (1 << alignment);
2062 return (new_address - address);
2066 relax_segment (segment_frag_root, segment)
2067 struct frag *segment_frag_root;
2070 register struct frag *fragP;
2071 register relax_addressT address;
2072 #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER)
2073 know (segment == SEG_DATA || segment == SEG_TEXT || segment == SEG_BSS);
2075 /* In case md_estimate_size_before_relax() wants to make fixSs. */
2076 subseg_change (segment, 0);
2078 /* For each frag in segment: count and store (a 1st guess of)
2081 for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next)
2083 fragP->fr_address = address;
2084 address += fragP->fr_fix;
2086 switch (fragP->fr_type)
2089 address += fragP->fr_offset * fragP->fr_var;
2095 addressT offset = relax_align (address, (int) fragP->fr_offset);
2097 if (fragP->fr_subtype != 0 && offset > fragP->fr_subtype)
2100 if (offset % fragP->fr_var != 0)
2102 as_bad (_("alignment padding (%lu bytes) not a multiple of %ld"),
2103 (unsigned long) offset, (long) fragP->fr_var);
2104 offset -= (offset % fragP->fr_var);
2113 /* Assume .org is nugatory. It will grow with 1st relax. */
2116 case rs_machine_dependent:
2117 address += md_estimate_size_before_relax (fragP, segment);
2120 #ifndef WORKING_DOT_WORD
2121 /* Broken words don't concern us yet */
2122 case rs_broken_word:
2127 /* Initial guess is always 1; doing otherwise can result in
2128 stable solutions that are larger than the minimum. */
2129 address += fragP->fr_offset = 1;
2133 address += eh_frame_estimate_size_before_relax (fragP);
2137 BAD_CASE (fragP->fr_type);
2139 } /* switch(fr_type) */
2140 } /* for each frag in the segment */
2144 long stretch; /* May be any size, 0 or negative. */
2145 /* Cumulative number of addresses we have */
2146 /* relaxed this pass. */
2147 /* We may have relaxed more than one address. */
2148 long stretched; /* Have we stretched on this pass? */
2149 /* This is 'cuz stretch may be zero, when, in fact some piece of code
2150 grew, and another shrank. If a branch instruction doesn't fit anymore,
2151 we could be scrod. */
2155 stretch = stretched = 0;
2156 for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next)
2159 addressT was_address;
2163 was_address = fragP->fr_address;
2164 address = fragP->fr_address += stretch;
2165 symbolP = fragP->fr_symbol;
2166 offset = fragP->fr_offset;
2168 switch (fragP->fr_type)
2170 case rs_fill: /* .fill never relaxes. */
2174 #ifndef WORKING_DOT_WORD
2175 /* JF: This is RMS's idea. I do *NOT* want to be blamed
2176 for it I do not want to write it. I do not want to have
2177 anything to do with it. This is not the proper way to
2178 implement this misfeature. */
2179 case rs_broken_word:
2181 struct broken_word *lie;
2182 struct broken_word *untruth;
2184 /* Yes this is ugly (storing the broken_word pointer
2185 in the symbol slot). Still, this whole chunk of
2186 code is ugly, and I don't feel like doing anything
2187 about it. Think of it as stubbornness in action. */
2189 for (lie = (struct broken_word *) (fragP->fr_symbol);
2190 lie && lie->dispfrag == fragP;
2191 lie = lie->next_broken_word)
2197 offset = (lie->add->sy_frag->fr_address
2198 + S_GET_VALUE (lie->add)
2200 - (lie->sub->sy_frag->fr_address
2201 + S_GET_VALUE (lie->sub)));
2202 if (offset <= -32768 || offset >= 32767)
2204 if (flag_warn_displacement)
2207 sprint_value (buf, (addressT) lie->addnum);
2208 as_warn (_(".word %s-%s+%s didn't fit"),
2209 S_GET_NAME (lie->add),
2210 S_GET_NAME (lie->sub),
2214 if (fragP->fr_subtype == 0)
2216 fragP->fr_subtype++;
2217 growth += md_short_jump_size;
2219 for (untruth = lie->next_broken_word;
2220 untruth && untruth->dispfrag == lie->dispfrag;
2221 untruth = untruth->next_broken_word)
2222 if ((untruth->add->sy_frag == lie->add->sy_frag)
2223 && S_GET_VALUE (untruth->add) == S_GET_VALUE (lie->add))
2226 untruth->use_jump = lie;
2228 growth += md_long_jump_size;
2233 } /* case rs_broken_word */
2238 addressT oldoff, newoff;
2240 oldoff = relax_align (was_address + fragP->fr_fix,
2242 newoff = relax_align (address + fragP->fr_fix,
2245 if (fragP->fr_subtype != 0)
2247 if (oldoff > fragP->fr_subtype)
2249 if (newoff > fragP->fr_subtype)
2253 growth = newoff - oldoff;
2259 long target = offset;
2264 #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER)
2265 know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
2266 || (S_GET_SEGMENT (symbolP) == SEG_DATA)
2267 || (S_GET_SEGMENT (symbolP) == SEG_TEXT)
2268 || S_GET_SEGMENT (symbolP) == SEG_BSS);
2269 know (symbolP->sy_frag);
2270 know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
2271 || (symbolP->sy_frag == &zero_address_frag));
2273 target += S_GET_VALUE (symbolP)
2274 + symbolP->sy_frag->fr_address;
2275 } /* if we have a symbol */
2277 know (fragP->fr_next);
2278 after = fragP->fr_next->fr_address;
2279 growth = target - after;
2282 /* Growth may be negative, but variable part of frag
2283 cannot have fewer than 0 chars. That is, we can't
2285 as_bad (_("attempt to .org backwards ignored"));
2289 growth -= stretch; /* This is an absolute growth factor */
2296 growth = S_GET_VALUE (symbolP);
2297 if (symbolP->sy_frag != &zero_address_frag
2298 || S_IS_COMMON (symbolP)
2299 || ! S_IS_DEFINED (symbolP))
2300 as_bad_where (fragP->fr_file, fragP->fr_line,
2301 _(".space specifies non-absolute value"));
2302 fragP->fr_symbol = 0;
2305 as_warn (_(".space or .fill with negative value, ignored"));
2313 case rs_machine_dependent:
2314 #ifdef md_relax_frag
2315 growth = md_relax_frag (fragP, stretch);
2317 #ifdef TC_GENERIC_RELAX_TABLE
2318 /* The default way to relax a frag is to look through
2319 TC_GENERIC_RELAX_TABLE. */
2320 growth = relax_frag (fragP, stretch);
2321 #endif /* TC_GENERIC_RELAX_TABLE */
2330 value = resolve_symbol_value (fragP->fr_symbol, 0);
2331 size = sizeof_leb128 (value, fragP->fr_subtype);
2332 growth = size - fragP->fr_offset;
2333 fragP->fr_offset = size;
2338 growth = eh_frame_relax_frag (fragP);
2342 BAD_CASE (fragP->fr_type);
2350 } /* For each frag in the segment. */
2352 while (stretched); /* Until nothing further to relax. */
2356 * We now have valid fr_address'es for each frag.
2360 * All fr_address's are correct, relative to their own segment.
2361 * We have made all the fixS we will ever make.
2363 } /* relax_segment() */
2365 #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS))
2367 #ifndef TC_RELOC_RTSYM_LOC_FIXUP
2368 #define TC_RELOC_RTSYM_LOC_FIXUP(X) (1)
2373 Go through all the fixS's in a segment and see which ones can be
2374 handled now. (These consist of fixS where we have since discovered
2375 the value of a symbol, or the address of the frag involved.)
2376 For each one, call md_apply_fix to put the fix into the frag data.
2378 Result is a count of how many relocation structs will be needed to
2379 handle the remaining fixS's that we couldn't completely handle here.
2380 These will be output later by emit_relocations(). */
2383 fixup_segment (fixP, this_segment_type)
2384 register fixS *fixP;
2385 segT this_segment_type; /* N_TYPE bits for segment. */
2387 long seg_reloc_count = 0;
2388 symbolS *add_symbolP;
2389 symbolS *sub_symbolP;
2396 segT add_symbol_segment = absolute_section;
2398 /* If the linker is doing the relaxing, we must not do any fixups.
2400 Well, strictly speaking that's not true -- we could do any that are
2401 PC-relative and don't cross regions that could change size. And for the
2402 i960 (the only machine for which we've got a relaxing linker right now),
2403 we might be able to turn callx/callj into bal anyways in cases where we
2404 know the maximum displacement. */
2407 for (; fixP; fixP = fixP->fx_next)
2409 TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count);
2410 return seg_reloc_count;
2413 for (; fixP; fixP = fixP->fx_next)
2416 fprintf (stderr, "\nprocessing fixup:\n");
2420 fragP = fixP->fx_frag;
2422 where = fixP->fx_where;
2423 place = fragP->fr_literal + where;
2424 size = fixP->fx_size;
2425 add_symbolP = fixP->fx_addsy;
2426 #ifdef TC_VALIDATE_FIX
2427 TC_VALIDATE_FIX (fixP, this_segment_type, skip);
2429 sub_symbolP = fixP->fx_subsy;
2430 add_number = fixP->fx_offset;
2431 pcrel = fixP->fx_pcrel;
2434 if (add_symbolP != NULL
2435 && add_symbolP->sy_mri_common)
2437 know (add_symbolP->sy_value.X_op == O_symbol);
2438 add_number += S_GET_VALUE (add_symbolP);
2439 fixP->fx_offset = add_number;
2440 add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol;
2444 add_symbol_segment = S_GET_SEGMENT (add_symbolP);
2448 resolve_symbol_value (sub_symbolP, 1);
2449 if (add_symbolP == NULL || add_symbol_segment == absolute_section)
2451 if (add_symbolP != NULL)
2453 add_number += S_GET_VALUE (add_symbolP);
2455 fixP->fx_addsy = NULL;
2458 /* It's just -sym */
2459 if (S_GET_SEGMENT (sub_symbolP) == absolute_section)
2461 add_number -= S_GET_VALUE (sub_symbolP);
2462 fixP->fx_subsy = NULL;
2465 && S_GET_SEGMENT (sub_symbolP) == this_segment_type)
2467 /* Should try converting to a constant. */
2472 as_bad_where (fixP->fx_file, fixP->fx_line,
2473 _("Negative of non-absolute symbol %s"),
2474 S_GET_NAME (sub_symbolP));
2476 else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment
2477 && SEG_NORMAL (add_symbol_segment))
2479 /* Difference of 2 symbols from same segment.
2480 Can't make difference of 2 undefineds: 'value' means
2481 something different for N_UNDF. */
2483 /* Makes no sense to use the difference of 2 arbitrary symbols
2484 as the target of a call instruction. */
2486 as_bad_where (fixP->fx_file, fixP->fx_line,
2487 _("callj to difference of 2 symbols"));
2488 #endif /* TC_I960 */
2489 add_number += S_GET_VALUE (add_symbolP) -
2490 S_GET_VALUE (sub_symbolP);
2493 pcrel = 0; /* No further pcrel processing. */
2495 /* Let the target machine make the final determination
2496 as to whether or not a relocation will be needed to
2497 handle this fixup. */
2498 if (!TC_FORCE_RELOCATION_SECTION (fixP, this_segment_type))
2501 fixP->fx_addsy = NULL;
2502 fixP->fx_subsy = NULL;
2507 /* Different segments in subtraction. */
2508 know (!(S_IS_EXTERNAL (sub_symbolP)
2509 && (S_GET_SEGMENT (sub_symbolP) == absolute_section)));
2511 if ((S_GET_SEGMENT (sub_symbolP) == absolute_section))
2512 add_number -= S_GET_VALUE (sub_symbolP);
2515 else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type
2516 #if 0 /* Do this even if it's already described as pc-relative. For example,
2517 on the m68k, an operand of "pc@(foo-.-2)" should address "foo" in a
2518 pc-relative mode. */
2523 /* Make it pc-relative. */
2524 add_number += (MD_PCREL_FROM_SECTION (fixP, this_segment_type)
2525 - S_GET_VALUE (sub_symbolP));
2532 #ifdef UNDEFINED_DIFFERENCE_OK
2533 /* The PA needs this for PIC code generation. We basically
2534 don't want to do anything if we have the difference of two
2535 symbols at this point. */
2538 /* Leave it alone. */
2541 #ifdef BFD_ASSEMBLER
2542 else if (fixP->fx_r_type == BFD_RELOC_GPREL32
2543 || fixP->fx_r_type == BFD_RELOC_GPREL16)
2545 /* Leave it alone. */
2551 sprint_value (buf, fragP->fr_address + where);
2552 as_bad_where (fixP->fx_file, fixP->fx_line,
2553 _("Subtraction of two symbols in different segments \"%s\" {%s segment} - \"%s\" {%s segment} at file address %s."),
2554 S_GET_NAME (add_symbolP),
2555 segment_name (S_GET_SEGMENT (add_symbolP)),
2556 S_GET_NAME (sub_symbolP),
2557 segment_name (S_GET_SEGMENT (sub_symbolP)),
2565 if (add_symbol_segment == this_segment_type && pcrel && !plt
2566 && TC_RELOC_RTSYM_LOC_FIXUP (fixP))
2569 * This fixup was made when the symbol's segment was
2570 * SEG_UNKNOWN, but it is now in the local segment.
2571 * So we know how to do the address without relocation.
2574 /* reloc_callj() may replace a 'call' with a 'calls' or a
2575 'bal', in which cases it modifies *fixP as appropriate.
2576 In the case of a 'calls', no further work is required,
2577 and *fixP has been set up to make the rest of the code
2580 #endif /* TC_I960 */
2582 add_number += S_GET_VALUE (add_symbolP);
2583 add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type);
2584 pcrel = 0; /* Lie. Don't want further pcrel processing. */
2586 /* Let the target machine make the final determination
2587 as to whether or not a relocation will be needed to
2588 handle this fixup. */
2589 if (!TC_FORCE_RELOCATION (fixP))
2592 fixP->fx_addsy = NULL;
2597 if (add_symbol_segment == absolute_section
2601 /* See comment about reloc_callj() above. */
2603 #endif /* TC_I960 */
2604 add_number += S_GET_VALUE (add_symbolP);
2606 /* Let the target machine make the final determination
2607 as to whether or not a relocation will be needed to
2608 handle this fixup. */
2610 if (!TC_FORCE_RELOCATION (fixP))
2612 fixP->fx_addsy = NULL;
2616 else if (add_symbol_segment == undefined_section
2617 #ifdef BFD_ASSEMBLER
2618 || bfd_is_com_section (add_symbol_segment)
2623 if ((int) fixP->fx_bit_fixP == 13)
2625 /* This is a COBR instruction. They have only a
2626 * 13-bit displacement and are only to be used
2627 * for local branches: flag as error, don't generate
2630 as_bad_where (fixP->fx_file, fixP->fx_line,
2631 _("can't use COBR format with external label"));
2632 fixP->fx_addsy = NULL;
2636 #endif /* TC_I960 */
2640 if (S_IS_COMMON (add_symbolP))
2641 add_number += S_GET_VALUE (add_symbolP);
2642 #endif /* TE_I386AIX */
2643 #endif /* OBJ_COFF */
2649 #if !(defined (TC_V850) && defined (OBJ_ELF))
2650 #if !(defined (TC_M68K) && defined (OBJ_ELF))
2651 #if !defined (TC_I386) || !(defined (OBJ_ELF) || defined (OBJ_COFF)) || defined (TE_PE)
2652 add_number += S_GET_VALUE (add_symbolP);
2662 add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type);
2663 if (add_symbolP == 0)
2665 #ifndef BFD_ASSEMBLER
2666 fixP->fx_addsy = &abs_symbol;
2668 fixP->fx_addsy = section_symbol (absolute_section);
2670 fixP->fx_addsy->sy_used_in_reloc = 1;
2675 if (!fixP->fx_bit_fixP && !fixP->fx_no_overflow && size > 0)
2677 if ((size_t) size < sizeof (valueT))
2681 /* set all bits to one */
2684 /* Technically, combining these produces an undefined result
2685 if size is sizeof (valueT), though I think these two
2686 half-way operations should both be defined. And the
2687 compiler should be able to combine them if it's valid on
2688 the host architecture. */
2691 hibit = (valueT) 1 << (size * 8 - 1);
2692 if (((add_number & mask) != 0
2694 && (add_number & hibit) != 0))
2695 && ((add_number & mask) != mask
2696 || (add_number & hibit) == 0))
2698 char buf[50], buf2[50];
2699 sprint_value (buf, fragP->fr_address + where);
2700 if (add_number > 1000)
2701 sprint_value (buf2, add_number);
2703 sprintf (buf2, "%ld", (long) add_number);
2704 as_bad_where (fixP->fx_file, fixP->fx_line,
2705 _("Value of %s too large for field of %d bytes at %s"),
2707 } /* generic error checking */
2709 #ifdef WARN_SIGNED_OVERFLOW_WORD
2710 /* Warn if a .word value is too large when treated as a signed
2711 number. We already know it is not too negative. This is to
2712 catch over-large switches generated by gcc on the 68k. */
2713 if (!flag_signed_overflow_ok
2715 && add_number > 0x7fff)
2716 as_bad_where (fixP->fx_file, fixP->fx_line,
2717 _("Signed .word overflow; switch may be too large; %ld at 0x%lx"),
2719 (unsigned long) (fragP->fr_address + where));
2721 } /* not a bit fix */
2725 #ifdef MD_APPLY_FIX3
2726 md_apply_fix3 (fixP, &add_number, this_segment_type);
2728 #ifdef BFD_ASSEMBLER
2729 md_apply_fix (fixP, &add_number);
2731 md_apply_fix (fixP, add_number);
2735 #ifndef TC_HANDLES_FX_DONE
2736 /* If the tc-* files haven't been converted, assume it's handling
2737 it the old way, where a null fx_addsy means that the fix has
2738 been applied completely, and no further work is needed. */
2739 if (fixP->fx_addsy == 0 && fixP->fx_pcrel == 0)
2743 #ifdef TC_VALIDATE_FIX
2747 fprintf (stderr, "result:\n");
2750 } /* For each fixS in this segment. */
2752 TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count);
2753 return seg_reloc_count;
2756 #endif /* defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) */
2759 number_to_chars_bigendian (buf, val, n)
2764 if ((size_t) n > sizeof (val) || n <= 0)
2768 buf[n] = val & 0xff;
2774 number_to_chars_littleendian (buf, val, n)
2779 if ((size_t) n > sizeof (val) || n <= 0)
2783 *buf++ = val & 0xff;
2789 write_print_statistics (file)
2792 fprintf (stderr, "fixups: %d\n", n_fixups);
2796 extern int indent_level;
2803 fprintf (stderr, "fix %lx %s:%d", (long) fixp, fixp->fx_file, fixp->fx_line);
2805 fprintf (stderr, " pcrel");
2806 if (fixp->fx_pcrel_adjust)
2807 fprintf (stderr, " pcrel_adjust=%d", fixp->fx_pcrel_adjust);
2808 if (fixp->fx_im_disp)
2811 fprintf (stderr, " im_disp=%d", fixp->fx_im_disp);
2813 fprintf (stderr, " im_disp");
2817 fprintf (stderr, " tcbit");
2819 fprintf (stderr, " done");
2820 fprintf (stderr, "\n size=%d frag=%lx where=%ld offset=%lx addnumber=%lx",
2821 fixp->fx_size, (long) fixp->fx_frag, (long) fixp->fx_where,
2822 (long) fixp->fx_offset, (long) fixp->fx_addnumber);
2823 #ifdef BFD_ASSEMBLER
2824 fprintf (stderr, "\n %s (%d)", bfd_get_reloc_code_name (fixp->fx_r_type),
2827 #ifdef NEED_FX_R_TYPE
2828 fprintf (stderr, " r_type=%d", fixp->fx_r_type);
2833 fprintf (stderr, "\n +<");
2834 print_symbol_value_1 (stderr, fixp->fx_addsy);
2835 fprintf (stderr, ">");
2839 fprintf (stderr, "\n -<");
2840 print_symbol_value_1 (stderr, fixp->fx_subsy);
2841 fprintf (stderr, ">");
2843 fprintf (stderr, "\n");
2844 #ifdef TC_FIX_DATA_PRINT
2845 TC_FIX_DATA_PRINT (stderr, fixp);
2849 /* end of write.c */