/* The PA needs this for PIC code generation. */
#define TC_VALIDATE_FIX_SUB(FIX) 1
#else
-#ifdef BFD_ASSEMBLER
#define TC_VALIDATE_FIX_SUB(FIX) \
((FIX)->fx_r_type == BFD_RELOC_GPREL32 \
|| (FIX)->fx_r_type == BFD_RELOC_GPREL16)
-#else
-#define TC_VALIDATE_FIX_SUB(FIX) 0
-#endif
#endif
#endif
void print_fixup (fixS *);
-#ifdef BFD_ASSEMBLER
static void renumber_sections (bfd *, asection *, PTR);
/* We generally attach relocs to frag chains. However, after we have
that must be attached to a segment. This will include relocs added
in md_estimate_size_for_relax, for example. */
static int frags_chained = 0;
-#endif
-
-#ifndef BFD_ASSEMBLER
-
-#ifndef MANY_SEGMENTS
-struct frag *text_frag_root;
-struct frag *data_frag_root;
-struct frag *bss_frag_root;
-
-struct frag *text_last_frag; /* Last frag in segment. */
-struct frag *data_last_frag; /* Last frag in segment. */
-static struct frag *bss_last_frag; /* Last frag in segment. */
-#endif
-
-#ifndef BFD
-static object_headers headers;
-#endif
-
-long string_byte_count;
-char *next_object_file_charP; /* Tracks object file bytes. */
-
-#ifndef OBJ_VMS
-int magic_number_for_object_file = DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE;
-#endif
-
-#endif /* BFD_ASSEMBLER */
static int n_fixups;
-#ifdef BFD_ASSEMBLER
#define RELOC_ENUM enum bfd_reloc_code_real
-#else
-#define RELOC_ENUM int
-#endif
static fixS *fix_new_internal (fragS *, int where, int size,
symbolS *add, symbolS *sub,
offsetT offset, int pcrel,
RELOC_ENUM r_type);
-#if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS))
static long fixup_segment (fixS *, segT);
-#endif
static relax_addressT relax_align (relax_addressT addr, int align);
-#if defined (BFD_ASSEMBLER) || ! defined (BFD)
static fragS *chain_frchains_together_1 (segT, struct frchain *);
-#endif
-#ifdef BFD_ASSEMBLER
static void chain_frchains_together (bfd *, segT, PTR);
static void cvt_frag_to_fill (segT, fragS *);
static void adjust_reloc_syms (bfd *, asection *, PTR);
static void write_relocs (bfd *, asection *, PTR);
static void write_contents (bfd *, asection *, PTR);
static void set_symtab (void);
-#endif
-#if defined (BFD_ASSEMBLER) || (! defined (BFD) && ! defined (OBJ_AOUT))
static void merge_data_into_text (void);
-#endif
-#if ! defined (BFD_ASSEMBLER) && ! defined (BFD)
-static void cvt_frag_to_fill (object_headers *, segT, fragS *);
-static void remove_subsegs (frchainS *, int, fragS **, fragS **);
-static void relax_and_size_all_segments (void);
-#endif
/* Create a fixS in obstack 'notes'. */
fixP->fx_dot_value = dot_value;
fixP->fx_pcrel = pcrel;
fixP->fx_plt = 0;
-#if defined(NEED_FX_R_TYPE) || defined (BFD_ASSEMBLER)
fixP->fx_r_type = r_type;
-#endif
fixP->fx_im_disp = 0;
fixP->fx_pcrel_adjust = 0;
fixP->fx_bit_fixP = 0;
time option. xoxorich. */
{
-#ifdef BFD_ASSEMBLER
fixS **seg_fix_rootP = (frags_chained
? &seg_info (now_seg)->fix_root
: &frchain_now->fix_root);
fixS **seg_fix_tailP = (frags_chained
? &seg_info (now_seg)->fix_tail
: &frchain_now->fix_tail);
-#endif
#ifdef REVERSE_SORT_RELOCS
case O_symbol_rva:
add = exp->X_add_symbol;
off = exp->X_add_number;
-
-#if defined(BFD_ASSEMBLER)
r_type = BFD_RELOC_RVA;
-#else
-#if defined(TC_RVA_RELOC)
- r_type = TC_RVA_RELOC;
-#else
- as_fatal (_("rva not supported"));
-#endif
-#endif
break;
case O_uminus:
int
generic_force_reloc (fixS *fix)
{
-#ifdef BFD_ASSEMBLER
if (fix->fx_r_type == BFD_RELOC_VTABLE_INHERIT
|| fix->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
return 1;
-#endif
+
+ if (fix->fx_addsy == NULL)
+ return 0;
+
return S_FORCE_RELOC (fix->fx_addsy, fix->fx_subsy == NULL);
}
*charPP += length;
}
-#ifndef BFD_ASSEMBLER
-int section_alignment[SEG_MAXIMUM_ORDINAL];
-#endif
-
/* This routine records the largest alignment seen for each segment.
If the beginning of the segment is aligned on the worst-case
boundary, all of the other alignments within it will work. At
{
if (seg == absolute_section)
return;
-#ifdef BFD_ASSEMBLER
+
if ((unsigned int) align > bfd_get_section_alignment (stdoutput, seg))
bfd_set_section_alignment (stdoutput, seg, align);
-#else
- if (align > section_alignment[(int) seg])
- section_alignment[(int) seg] = align;
-#endif
}
int
{
if (seg == absolute_section)
return 0;
-#ifdef BFD_ASSEMBLER
+
return bfd_get_section_alignment (stdoutput, seg);
-#else
- return section_alignment[(int) seg];
-#endif
}
-#ifdef BFD_ASSEMBLER
-
/* Reset the section indices after removing the gas created sections. */
static void
++*countp;
}
-#endif /* defined (BFD_ASSEMBLER) */
-
-#if defined (BFD_ASSEMBLER) || ! defined (BFD)
-
static fragS *
chain_frchains_together_1 (segT section, struct frchain *frchp)
{
fragS dummy, *prev_frag = &dummy;
-#ifdef BFD_ASSEMBLER
fixS fix_dummy, *prev_fix = &fix_dummy;
-#endif
for (; frchp && frchp->frch_seg == section; frchp = frchp->frch_next)
{
prev_frag->fr_next = frchp->frch_root;
prev_frag = frchp->frch_last;
assert (prev_frag->fr_type != 0);
-#ifdef BFD_ASSEMBLER
if (frchp->fix_root != (fixS *) NULL)
{
if (seg_info (section)->fix_root == (fixS *) NULL)
seg_info (section)->fix_tail = frchp->fix_tail;
prev_fix = frchp->fix_tail;
}
-#endif
}
assert (prev_frag->fr_type != 0);
prev_frag->fr_next = 0;
return prev_frag;
}
-#endif
-
-#ifdef BFD_ASSEMBLER
-
static void
chain_frchains_together (bfd *abfd ATTRIBUTE_UNUSED,
segT section,
frags_chained = 1;
}
-#endif
-
-#if !defined (BFD) && !defined (BFD_ASSEMBLER)
-
-static void
-remove_subsegs (frchainS *head, int seg, fragS **root, fragS **last)
-{
- *root = head->frch_root;
- *last = chain_frchains_together_1 (seg, head);
-}
-
-#endif /* BFD */
-
-#if defined (BFD_ASSEMBLER) || !defined (BFD)
-
-#ifdef BFD_ASSEMBLER
static void
cvt_frag_to_fill (segT sec ATTRIBUTE_UNUSED, fragS *fragP)
-#else
-static void
-cvt_frag_to_fill (object_headers *headersP, segT sec, fragS *fragP)
-#endif
{
switch (fragP->fr_type)
{
break;
case rs_machine_dependent:
-#ifdef BFD_ASSEMBLER
md_convert_frag (stdoutput, sec, fragP);
-#else
- md_convert_frag (headersP, sec, fragP);
-#endif
assert (fragP->fr_next == NULL
|| ((offsetT) (fragP->fr_next->fr_address - fragP->fr_address)
#endif
}
-#endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */
-
-#ifdef BFD_ASSEMBLER
static void relax_seg (bfd *, asection *, PTR);
static void
/* If this symbol is equated to an undefined or common symbol,
convert the fixup to being against that symbol. */
- if (symbol_equated_reloc_p (sym))
+ if (symbol_equated_reloc_p (sym)
+ || S_IS_WEAKREFR (sym))
{
- symbolS *new_sym
- = symbol_get_value_expression (sym)->X_add_symbol;
- const char *name = S_GET_NAME (sym);
- if (!S_IS_COMMON (new_sym)
- && !TC_FAKE_LABEL (name)
- && (!S_IS_EXTERNAL (sym) || S_IS_LOCAL (sym)))
- as_bad (_("Local symbol `%s' can't be equated to undefined symbol `%s'"),
- name, S_GET_NAME (new_sym));
fixp->fx_offset += symbol_get_value_expression (sym)->X_add_number;
- sym = new_sym;
+ sym = symbol_get_value_expression (sym)->X_add_symbol;
fixp->fx_addsy = sym;
}
}
}
}
-#endif
-#if defined(BFD_ASSEMBLER) || (!defined (BFD) && !defined(OBJ_AOUT))
static void
merge_data_into_text (void)
{
-#if defined(BFD_ASSEMBLER) || defined(MANY_SEGMENTS)
seg_info (text_section)->frchainP->frch_last->fr_next =
seg_info (data_section)->frchainP->frch_root;
seg_info (text_section)->frchainP->frch_last =
seg_info (data_section)->frchainP->frch_last;
seg_info (data_section)->frchainP = 0;
-#else
- fixS *tmp;
-
- text_last_frag->fr_next = data_frag_root;
- text_last_frag = data_last_frag;
- data_last_frag = NULL;
- data_frag_root = NULL;
- if (text_fix_root)
- {
- for (tmp = text_fix_root; tmp->fx_next; tmp = tmp->fx_next);;
- tmp->fx_next = data_fix_root;
- text_fix_tail = data_fix_tail;
- }
- else
- text_fix_root = data_fix_root;
- data_fix_root = NULL;
-#endif
-}
-#endif /* BFD_ASSEMBLER || (! BFD && ! OBJ_AOUT) */
-
-#if !defined (BFD_ASSEMBLER) && !defined (BFD)
-static void
-relax_and_size_all_segments ()
-{
- fragS *fragP;
-
- relax_segment (text_frag_root, SEG_TEXT);
- relax_segment (data_frag_root, SEG_DATA);
- relax_segment (bss_frag_root, SEG_BSS);
-
- /* Now the addresses of frags are correct within the segment. */
- know (text_last_frag->fr_type == rs_fill && text_last_frag->fr_offset == 0);
- H_SET_TEXT_SIZE (&headers, text_last_frag->fr_address);
- text_last_frag->fr_address = H_GET_TEXT_SIZE (&headers);
-
- /* Join the 2 segments into 1 huge segment.
- To do this, re-compute every rn_address in the SEG_DATA frags.
- Then join the data frags after the text frags.
-
- Determine a_data [length of data segment]. */
- if (data_frag_root)
- {
- register relax_addressT slide;
-
- know ((text_last_frag->fr_type == rs_fill)
- && (text_last_frag->fr_offset == 0));
-
- H_SET_DATA_SIZE (&headers, data_last_frag->fr_address);
- data_last_frag->fr_address = H_GET_DATA_SIZE (&headers);
- slide = H_GET_TEXT_SIZE (&headers); /* & in file of the data segment. */
-#ifdef OBJ_BOUT
-#define RoundUp(N,S) (((N)+(S)-1)&-(S))
- /* For b.out: If the data section has a strict alignment
- requirement, its load address in the .o file will be
- rounded up from the size of the text section. These
- two values are *not* the same! Similarly for the bss
- section.... */
- slide = RoundUp (slide, 1 << section_alignment[SEG_DATA]);
-#endif
-
- for (fragP = data_frag_root; fragP; fragP = fragP->fr_next)
- fragP->fr_address += slide;
-
- know (text_last_frag != 0);
- text_last_frag->fr_next = data_frag_root;
- }
- else
- {
- H_SET_DATA_SIZE (&headers, 0);
- }
-
-#ifdef OBJ_BOUT
- /* See above comments on b.out data section address. */
- {
- addressT bss_vma;
- if (data_last_frag == 0)
- bss_vma = H_GET_TEXT_SIZE (&headers);
- else
- bss_vma = data_last_frag->fr_address;
- bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]);
- bss_address_frag.fr_address = bss_vma;
- }
-#else /* ! OBJ_BOUT */
- bss_address_frag.fr_address = (H_GET_TEXT_SIZE (&headers) +
- H_GET_DATA_SIZE (&headers));
-
-#endif /* ! OBJ_BOUT */
-
- /* Slide all the frags. */
- if (bss_frag_root)
- {
- relax_addressT slide = bss_address_frag.fr_address;
-
- for (fragP = bss_frag_root; fragP; fragP = fragP->fr_next)
- fragP->fr_address += slide;
- }
-
- if (bss_last_frag)
- H_SET_BSS_SIZE (&headers,
- bss_last_frag->fr_address - bss_frag_root->fr_address);
- else
- H_SET_BSS_SIZE (&headers, 0);
}
-#endif /* ! BFD_ASSEMBLER && ! BFD */
-#if defined (BFD_ASSEMBLER) || !defined (BFD)
-
-#ifdef BFD_ASSEMBLER
static void
set_symtab (void)
{
assert (result);
symbol_table_frozen = 1;
}
-#endif
/* Finish the subsegments. After every sub-segment, we fake an
".align ...". This conforms to BSD4.2 brane-damage. We then fake
(!(FRCHAIN)->frch_next || (FRCHAIN)->frch_next->frch_seg != (SEG) \
? get_recorded_alignment (SEG) : 0)
#else
-#ifdef BFD_ASSEMBLER
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
-#else
-#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 2
-#endif
#endif
#endif
if (!had_errors ())
{
alignment = SUB_SEGMENT_ALIGN (now_seg, frchainP);
-#ifdef BFD_ASSEMBLER
if ((bfd_get_section_flags (now_seg->owner, now_seg) & SEC_MERGE)
&& now_seg->entsize)
{
if (entalign > alignment)
alignment = entalign;
}
-#endif
}
if (subseg_text_p (now_seg))
void
write_object_file (void)
{
-#if ! defined (BFD_ASSEMBLER) || ! defined (WORKING_DOT_WORD)
+#ifndef WORKING_DOT_WORD
fragS *fragP; /* Track along all frags. */
#endif
/* From now on, we don't care about sub-segments. Build one frag chain
for each segment. Linked thru fr_next. */
-#ifdef BFD_ASSEMBLER
/* Remove the sections created by gas for its own purposes. */
{
int i;
}
bfd_map_over_sections (stdoutput, chain_frchains_together, (char *) 0);
-#else
- remove_subsegs (frchain_root, SEG_TEXT, &text_frag_root, &text_last_frag);
- remove_subsegs (data0_frchainP, SEG_DATA, &data_frag_root, &data_last_frag);
- remove_subsegs (bss0_frchainP, SEG_BSS, &bss_frag_root, &bss_last_frag);
-#endif
/* We have two segments. If user gave -R flag, then we must put the
data frags into the text segment. Do this before relaxing so
we know to take advantage of -R and make shorter addresses. */
-#if !defined (OBJ_AOUT) || defined (BFD_ASSEMBLER)
if (flag_readonly_data_in_text)
{
merge_data_into_text ();
}
-#endif
-#ifdef BFD_ASSEMBLER
while (1)
{
int changed;
finalize_syms = TC_FINALIZE_SYMS_BEFORE_SIZE_SEG;
bfd_map_over_sections (stdoutput, size_seg, (char *) 0);
-#else
- relax_and_size_all_segments ();
-#endif /* BFD_ASSEMBLER */
/* Relaxation has completed. Freeze all syms. */
finalize_syms = 1;
md_post_relax_hook;
#endif
-#ifndef BFD_ASSEMBLER
- /* Crawl the symbol chain.
-
- For each symbol whose value depends on a frag, take the address of
- that frag and subsume it into the value of the symbol.
- After this, there is just one way to lookup a symbol value.
- Values are left in their final state for object file emission.
- We adjust the values of 'L' local symbols, even if we do
- not intend to emit them to the object file, because their values
- are needed for fix-ups.
-
- Unless we saw a -L flag, remove all symbols that begin with 'L'
- from the symbol chain. (They are still pointed to by the fixes.)
-
- Count the remaining symbols.
- Assign a symbol number to each symbol.
- Count the number of string-table chars we will emit.
- Put this info into the headers as appropriate. */
- know (zero_address_frag.fr_address == 0);
- string_byte_count = 4;
-
- obj_crawl_symbol_chain (&headers);
-
- if (string_byte_count == 4)
- string_byte_count = 0;
-
- H_SET_STRING_SIZE (&headers, string_byte_count);
-
- /* Addresses of frags now reflect addresses we use in the object file.
- Symbol values are correct.
- Scan the frags, converting any ".org"s and ".align"s to ".fill"s.
- Also converting any machine-dependent frags using md_convert_frag(); */
- subseg_change (SEG_TEXT, 0);
-
- for (fragP = text_frag_root; fragP; fragP = fragP->fr_next)
- {
- /* At this point we have linked all the frags into a single
- chain. However, cvt_frag_to_fill may call md_convert_frag
- which may call fix_new. We need to ensure that fix_new adds
- the fixup to the right section. */
- if (fragP == data_frag_root)
- subseg_change (SEG_DATA, 0);
-
- cvt_frag_to_fill (&headers, SEG_TEXT, fragP);
-
- /* Some assert macros don't work with # directives mixed in. */
-#ifndef NDEBUG
- if (!(fragP->fr_next == NULL
-#ifdef OBJ_BOUT
- || fragP->fr_next == data_frag_root
-#endif
- || ((offsetT) (fragP->fr_next->fr_address - fragP->fr_address)
- == (fragP->fr_fix + fragP->fr_offset * fragP->fr_var))))
- abort ();
-#endif
- }
-#endif /* ! BFD_ASSEMBLER */
-
#ifndef WORKING_DOT_WORD
{
struct broken_word *lie;
exp.X_add_symbol = lie->add;
exp.X_op_symbol = lie->sub;
exp.X_add_number = lie->addnum;
-#ifdef BFD_ASSEMBLER
#ifdef TC_CONS_FIX_NEW
TC_CONS_FIX_NEW (lie->frag,
lie->word_goes_here - lie->frag->fr_literal,
lie->word_goes_here - lie->frag->fr_literal,
2, &exp, 0, BFD_RELOC_16);
#endif
-#else
-#if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE)
- fix_new_exp (lie->frag,
- lie->word_goes_here - lie->frag->fr_literal,
- 2, &exp, 0, NO_RELOC);
-#else
-#ifdef TC_NS32K
- fix_new_ns32k_exp (lie->frag,
- lie->word_goes_here - lie->frag->fr_literal,
- 2, &exp, 0, 0, 2, 0, 0);
-#else
- fix_new_exp (lie->frag,
- lie->word_goes_here - lie->frag->fr_literal,
- 2, &exp, 0, 0);
-#endif /* TC_NS32K */
-#endif /* TC_SPARC|TC_A29K|NEED_FX_R_TYPE */
-#endif /* BFD_ASSEMBLER */
*prevP = lie->next_broken_word;
}
else
}
#endif /* not WORKING_DOT_WORD */
-#ifndef BFD_ASSEMBLER
-#ifndef OBJ_VMS
- { /* not vms */
- char *the_object_file;
- long object_file_size;
- /* Scan every FixS performing fixups. We had to wait until now to
- do this because md_convert_frag() may have made some fixSs. */
- int trsize, drsize;
-
- subseg_change (SEG_TEXT, 0);
- trsize = md_reloc_size * fixup_segment (text_fix_root, SEG_TEXT);
- subseg_change (SEG_DATA, 0);
- drsize = md_reloc_size * fixup_segment (data_fix_root, SEG_DATA);
- H_SET_RELOCATION_SIZE (&headers, trsize, drsize);
-
- /* FIXME: Move this stuff into the pre-write-hook. */
- H_SET_MAGIC_NUMBER (&headers, magic_number_for_object_file);
- H_SET_ENTRY_POINT (&headers, 0);
-
- obj_pre_write_hook (&headers); /* Extra coff stuff. */
-
- object_file_size = H_GET_FILE_SIZE (&headers);
- next_object_file_charP = the_object_file = xmalloc (object_file_size);
-
- output_file_create (out_file_name);
-
- obj_header_append (&next_object_file_charP, &headers);
-
- know ((next_object_file_charP - the_object_file)
- == H_GET_HEADER_SIZE (&headers));
-
- /* Emit code. */
- for (fragP = text_frag_root; fragP; fragP = fragP->fr_next)
- {
- register long count;
- register char *fill_literal;
- register long fill_size;
-
- PROGRESS (1);
- know (fragP->fr_type == rs_fill);
- append (&next_object_file_charP, fragP->fr_literal,
- (unsigned long) fragP->fr_fix);
- fill_literal = fragP->fr_literal + fragP->fr_fix;
- fill_size = fragP->fr_var;
- know (fragP->fr_offset >= 0);
-
- for (count = fragP->fr_offset; count; count--)
- append (&next_object_file_charP, fill_literal,
- (unsigned long) fill_size);
- }
-
- know ((next_object_file_charP - the_object_file)
- == (H_GET_HEADER_SIZE (&headers)
- + H_GET_TEXT_SIZE (&headers)
- + H_GET_DATA_SIZE (&headers)));
-
- /* Emit relocations. */
- obj_emit_relocations (&next_object_file_charP, text_fix_root,
- (relax_addressT) 0);
- 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)));
-#ifdef TC_I960
- /* Make addresses in data relocation directives relative to beginning of
- first data fragment, not end of last text fragment: alignment of the
- start of the data segment may place a gap between the segments. */
- obj_emit_relocations (&next_object_file_charP, data_fix_root,
- data0_frchainP->frch_root->fr_address);
-#else /* TC_I960 */
- obj_emit_relocations (&next_object_file_charP, data_fix_root,
- text_last_frag->fr_address);
-#endif /* TC_I960 */
-
- 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)));
-
- /* Emit line number entries. */
- OBJ_EMIT_LINENO (&next_object_file_charP, lineno_rootP, the_object_file);
- 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)));
-
- /* Emit symbols. */
- obj_emit_symbols (&next_object_file_charP, symbol_rootP);
- 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)));
-
- /* Emit strings. */
- if (string_byte_count > 0)
- obj_emit_strings (&next_object_file_charP);
-
-#ifdef BFD_HEADERS
- bfd_seek (stdoutput, (file_ptr) 0, 0);
- bfd_bwrite (the_object_file, (bfd_size_type) object_file_size, stdoutput);
-#else
-
- /* Write the data to the file. */
- output_file_append (the_object_file, object_file_size, out_file_name);
- free (the_object_file);
-#endif
- }
-#else /* OBJ_VMS */
- /* Now do the VMS-dependent part of writing the object file. */
- vms_write_object_file (H_GET_TEXT_SIZE (&headers),
- H_GET_DATA_SIZE (&headers),
- H_GET_BSS_SIZE (&headers),
- text_frag_root, data_frag_root);
-#endif /* OBJ_VMS */
-#else /* BFD_ASSEMBLER */
-
/* Resolve symbol values. This needs to be done before processing
the relocations. */
if (symbol_rootP)
/* Skip symbols which were equated to undefined or common
symbols. */
- if (symbol_equated_reloc_p (symp))
+ if (symbol_equated_reloc_p (symp)
+ || S_IS_WEAKREFR (symp))
{
const char *name = S_GET_NAME (symp);
if (S_IS_COMMON (symp)
&& !TC_FAKE_LABEL (name)
+ && !S_IS_WEAKREFR (symp)
&& (!S_IS_EXTERNAL (symp) || S_IS_LOCAL (symp)))
{
expressionS *e = symbol_get_value_expression (symp);
continue;
}
- /* So far, common symbols have been treated like undefined symbols.
- Put them in the common section now. */
- if (S_IS_DEFINED (symp) == 0
- && S_GET_VALUE (symp) != 0)
- S_SET_SEGMENT (symp, bfd_com_section_ptr);
-
#ifdef obj_frob_symbol
obj_frob_symbol (symp, punt);
#endif
opposites. Sometimes the former checks flags and the
latter examines the name... */
|| (!S_IS_EXTERNAL (symp)
- && (punt || S_IS_LOCAL (symp))
+ && (punt || S_IS_LOCAL (symp) ||
+ (S_IS_WEAKREFD (symp) && ! symbol_used_p (symp)))
&& ! symbol_used_in_reloc_p (symp)))
{
symbol_remove (symp, &symbol_rootP, &symbol_lastP);
#endif
bfd_map_over_sections (stdoutput, write_contents, (char *) 0);
-#endif /* BFD_ASSEMBLER */
}
-#endif /* ! BFD */
#ifdef TC_GENERIC_RELAX_TABLE
-
/* Relax a fragment by scanning TC_GENERIC_RELAX_TABLE. */
long
sym_frag = symbol_get_frag (symbolP);
#ifndef DIFF_EXPR_OK
-#if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER)
- know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
- || (S_GET_SEGMENT (symbolP) == SEG_DATA)
- || (S_GET_SEGMENT (symbolP) == SEG_BSS)
- || (S_GET_SEGMENT (symbolP) == SEG_TEXT));
-#endif
know (sym_frag != NULL);
#endif
know (S_GET_SEGMENT (symbolP) != absolute_section
int
relax_segment (struct frag *segment_frag_root, segT segment)
{
- register struct frag *fragP;
- register relax_addressT address;
+ unsigned long frag_count;
+ struct frag *fragP;
+ relax_addressT address;
int ret;
-#if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER)
- know (segment == SEG_DATA || segment == SEG_TEXT || segment == SEG_BSS);
-#endif
/* In case md_estimate_size_before_relax() wants to make fixSs. */
subseg_change (segment, 0);
/* For each frag in segment: count and store (a 1st guess of)
fr_address. */
address = 0;
- for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next)
+ for (frag_count = 0, fragP = segment_frag_root;
+ fragP;
+ fragP = fragP->fr_next, frag_count ++)
{
fragP->relax_marker = 0;
fragP->fr_address = address;
/* Do relax(). */
{
+ unsigned long max_iterations;
offsetT stretch; /* May be any size, 0 or negative. */
/* Cumulative number of addresses we have relaxed this pass.
We may have relaxed more than one address. */
grew, and another shrank. If a branch instruction doesn't fit anymore,
we could be scrod. */
+ /* We want to prevent going into an infinite loop where one frag grows
+ depending upon the location of a symbol which is in turn moved by
+ the growing frag. eg:
+
+ foo = .
+ .org foo+16
+ foo = .
+
+ So we dictate that this algorithm can be at most O2. */
+ max_iterations = frag_count * frag_count;
+ /* Check for overflow. */
+ if (max_iterations < frag_count)
+ max_iterations = frag_count;
+
do
{
stretch = 0;
if (symbolP)
{
-#if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER)
- know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
- || (S_GET_SEGMENT (symbolP) == SEG_DATA)
- || (S_GET_SEGMENT (symbolP) == SEG_TEXT)
- || S_GET_SEGMENT (symbolP) == SEG_BSS);
- know (symbolP->sy_frag);
- know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
- || (symbolP->sy_frag == &zero_address_frag));
-#endif
/* Convert from an actual address to an octet offset
into the section. Here it is assumed that the
section's VMA is zero, and can omit subtracting it
from the symbol's value to get the address offset. */
-#ifdef BFD_ASSEMBLER
know (S_GET_SEGMENT (symbolP)->vma == 0);
-#endif
target += S_GET_VALUE (symbolP) * OCTETS_PER_BYTE;
}
stretch += growth;
stretched = 1;
}
- } /* For each frag in the segment. */
+ }
}
- while (stretched); /* Until nothing further to relax. */
- } /* do_relax */
+ /* Until nothing further to relax. */
+ while (stretched && -- max_iterations);
+
+ if (stretched)
+ as_fatal (_("Infinite loop encountered whilst attempting to compute the addresses of symbols in section %s"),
+ segment_name (segment));
+ }
ret = 0;
for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next)
return ret;
}
-#if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS))
-
/* fixup_segment()
Go through all the fixS's in a segment and see which ones can be
segT add_symbol_segment = absolute_section;
if (fixP != NULL && abs_section_sym == NULL)
- {
-#ifndef BFD_ASSEMBLER
- abs_section_sym = &abs_symbol;
-#else
- abs_section_sym = section_symbol (absolute_section);
-#endif
- }
+ abs_section_sym = section_symbol (absolute_section);
/* If the linker is doing the relaxing, we must not do any fixups.
fixP->fx_addsy = NULL;
}
else if (add_symbol_segment != undefined_section
-#ifdef BFD_ASSEMBLER
&& ! bfd_is_com_section (add_symbol_segment)
-#endif
&& MD_APPLY_SYM_VALUE (fixP))
add_number += S_GET_VALUE (fixP->fx_addsy);
}
return seg_reloc_count;
}
-#endif /* defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) */
-
void
number_to_chars_bigendian (char *buf, valueT val, int n)
{
fprintf (stderr, "\n size=%d frag=%lx where=%ld offset=%lx addnumber=%lx",
fixp->fx_size, (long) fixp->fx_frag, (long) fixp->fx_where,
(long) fixp->fx_offset, (long) fixp->fx_addnumber);
-#ifdef BFD_ASSEMBLER
fprintf (stderr, "\n %s (%d)", bfd_get_reloc_code_name (fixp->fx_r_type),
fixp->fx_r_type);
-#else
-#ifdef NEED_FX_R_TYPE
- fprintf (stderr, " r_type=%d", fixp->fx_r_type);
-#endif
-#endif
if (fixp->fx_addsy)
{
fprintf (stderr, "\n +<");