/* write.c - emit .o file
-
- Copyright (C) 1986, 1987, 1990, 1991, 1992 Free Software Foundation, Inc.
+ Copyright (C) 1986, 1987, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
#include "obstack.h"
#include "output-file.h"
-/* The NOP_OPCODE is for the alignment fill value.
- * fill it a nop instruction so that the disassembler does not choke
- * on it
- */
+/* The NOP_OPCODE is for the alignment fill value. Fill it with a nop
+ instruction so that the disassembler does not choke on it. */
#ifndef NOP_OPCODE
#define NOP_OPCODE 0x00
#endif
+#ifndef WORKING_DOT_WORD
+extern CONST int md_short_jump_size;
+extern CONST int md_long_jump_size;
+#endif
+
+#ifndef BFD_ASSEMBLER
+
#ifndef MANY_SEGMENTS
struct frag *text_frag_root;
struct frag *data_frag_root;
int magic_number_for_object_file = DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE;
#endif
-static int is_dnrange PARAMS ((struct frag * f1, struct frag * f2));
+#endif /* BFD_ASSEMBLER */
+
static long fixup_segment PARAMS ((fixS * fixP, segT this_segment_type));
static relax_addressT relax_align PARAMS ((relax_addressT addr, long align));
void relax_segment PARAMS ((struct frag * seg_frag_root, segT seg_type));
symbolS *sub_symbol; /* X_subtract_symbol. */
long offset; /* X_add_number. */
int pcrel; /* TRUE if PC-relative relocation. */
+#ifdef BFD_ASSEMBLER
+ bfd_reloc_code_real_type r_type; /* Relocation type */
+#else
int r_type; /* Relocation type */
+#endif
{
fixS *fixP;
fixP->fx_subsy = sub_symbol;
fixP->fx_offset = offset;
fixP->fx_pcrel = pcrel;
-#if defined(TC_SPARC) || defined(TC_A29K) || defined( NEED_FX_R_TYPE)
+#if defined(NEED_FX_R_TYPE) || defined (BFD_ASSEMBLER)
fixP->fx_r_type = r_type;
#endif
- /* JF these 'cuz of the NS32K stuff */
fixP->fx_im_disp = 0;
fixP->fx_pcrel_adjust = 0;
- fixP->fx_bsr = 0;
fixP->fx_bit_fixP = 0;
+ fixP->fx_addnumber = 0;
+
+#ifdef TC_something
+ fixP->fx_bsr = 0;
+#endif
+#ifdef TC_I960
+ fixP->fx_callj = 0;
+#endif
+
+ /* Usually, we want relocs sorted numerically, but while
+ comparing to older versions of gas that have relocs
+ reverse sorted, it is convenient to have this compile
+ time option. xoxorich. */
+
+ {
- /* usually, we want relocs sorted numerically, but while
- comparing to older versions of gas that have relocs
- reverse sorted, it is convenient to have this compile
- time option. xoxorich. */
+#ifdef BFD_ASSEMBLER
+ fixS **seg_fix_rootP = & (seg_info (now_seg)->fix_root);
+ fixS **seg_fix_tailP = & (seg_info (now_seg)->fix_tail);
+#endif
#ifdef REVERSE_SORT_RELOCS
- fixP->fx_next = *seg_fix_rootP;
- *seg_fix_rootP = fixP;
+ fixP->fx_next = *seg_fix_rootP;
+ *seg_fix_rootP = fixP;
#else /* REVERSE_SORT_RELOCS */
- fixP->fx_next = NULL;
+ fixP->fx_next = NULL;
- if (*seg_fix_tailP)
- (*seg_fix_tailP)->fx_next = fixP;
- else
- *seg_fix_rootP = fixP;
- *seg_fix_tailP = fixP;
+ if (*seg_fix_tailP)
+ (*seg_fix_tailP)->fx_next = fixP;
+ else
+ *seg_fix_rootP = fixP;
+ *seg_fix_tailP = fixP;
#endif /* REVERSE_SORT_RELOCS */
- fixP->fx_callj = 0;
- return (fixP);
-} /* fix_new() */
+ }
+
+ return fixP;
+}
+
+/* Append a string onto another string, bumping the pointer along. */
+void
+append (charPP, fromP, length)
+ char **charPP;
+ char *fromP;
+ unsigned long length;
+{
+ /* Don't trust memcpy() of 0 chars. */
+ if (length == 0)
+ return;
+
+ memcpy (*charPP, fromP, (int) length);
+ *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
+ * least one object format really uses this info.
+ */
+void
+record_alignment (seg, align)
+ /* Segment to which alignment pertains */
+ segT seg;
+ /* Alignment, as a power of 2 (e.g., 1 => 2-byte boundary, 2 => 4-byte
+ boundary, etc.) */
+ int align;
+{
+#ifdef BFD_ASSEMBLER
+ if (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
+}
+
+#if defined (BFD_ASSEMBLER) || ! defined (BFD)
+
+static fragS *
+chain_frchains_together_1 (section, frchp)
+ segT section;
+ struct frchain *frchp;
+{
+ fragS dummy, *prev_frag = &dummy;
+ for (; frchp && frchp->frch_seg == section; frchp = frchp->frch_next)
+ {
+ prev_frag->fr_next = frchp->frch_root;
+ prev_frag = frchp->frch_last;
+ }
+ prev_frag->fr_next = 0;
+ return prev_frag;
+}
+
+#endif
+
+#ifdef BFD_ASSEMBLER
+
+static void
+chain_frchains_together (abfd, section, xxx)
+ bfd *abfd; /* unused */
+ segT section;
+ char *xxx; /* unused */
+{
+ chain_frchains_together_1 (section, seg_info (section)->frchainP);
+}
+
+#endif
#ifndef BFD
fragS **root;
fragS **last;
{
- fragS dummy;
- fragS *prev_frag = &dummy;
*root = head->frch_root;
- while (head && head->frch_seg == seg)
+ *last = chain_frchains_together_1 (seg, head);
+}
+
+#endif /* BFD */
+
+#ifndef BFD
+
+static void
+cvt_frag_to_fill (x, fragP)
+#ifdef BFD_ASSEMBLER
+ segT x;
+#else
+ object_headers *x;
+#endif
+ fragS *fragP;
+{
+#ifdef BFD_ASSEMBLER
+ segT sec = x;
+#else
+ object_headers *headers = x;
+#endif
+
+ switch (fragP->fr_type)
{
- prev_frag->fr_next = head->frch_root;
+ case rs_align:
+ case rs_org:
+#ifdef HANDLE_ALIGN
+ HANDLE_ALIGN (fragP);
+#endif
+ fragP->fr_type = rs_fill;
+ know (fragP->fr_var == 1);
+ know (fragP->fr_next != NULL);
+
+ fragP->fr_offset = (fragP->fr_next->fr_address
+ - fragP->fr_address
+ - fragP->fr_fix);
+ break;
- prev_frag = head->frch_last;
- head = head->frch_next;
+ case rs_fill:
+ break;
+
+ case rs_machine_dependent:
+#ifdef BFD_ASSEMBLER
+ md_convert_frag (stdoutput, sec, fragP);
+#else
+ md_convert_frag (headers, fragP);
+#endif
+
+ assert (fragP->fr_next == NULL
+ || (fragP->fr_next->fr_address - fragP->fr_address
+ == fragP->fr_fix));
+
+ /*
+ * After md_convert_frag, we make the frag into a ".space 0".
+ * Md_convert_frag() should set up any fixSs and constants
+ * required.
+ */
+ frag_wane (fragP);
+ break;
+
+#ifndef WORKING_DOT_WORD
+ case rs_broken_word:
+ {
+ struct broken_word *lie;
+
+ if (fragP->fr_subtype)
+ {
+ fragP->fr_fix += md_short_jump_size;
+ for (lie = (struct broken_word *) (fragP->fr_symbol);
+ lie && lie->dispfrag == fragP;
+ lie = lie->next_broken_word)
+ if (lie->added == 1)
+ fragP->fr_fix += md_long_jump_size;
+ }
+ frag_wane (fragP);
+ }
+ break;
+#endif
+
+ default:
+ BAD_CASE (fragP->fr_type);
+ break;
}
- *last = prev_frag;
- prev_frag->fr_next = 0;
}
+#ifdef BFD_ASSEMBLER
+static void
+relax_and_size_seg (abfd, sec, xxx)
+ bfd *abfd;
+ asection *sec;
+ char *xxx;
+{
+ flagword flags;
+
+ flags = bfd_get_section_flags (abfd, sec);
+
+ if (flags & SEC_ALLOC)
+ {
+ fragS *fragp;
+ segment_info_type *seginfo;
+ int x;
+ unsigned long size, newsize;
+
+ seginfo = (segment_info_type *) bfd_get_section_userdata (abfd, sec);
+ relax_segment (seginfo->frchainP->frch_root, sec);
+ for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next)
+ cvt_frag_to_fill (sec, fragp);
+ for (fragp = seginfo->frchainP->frch_root;
+ fragp->fr_next;
+ fragp = fragp->fr_next)
+ /* walk to last elt */;
+ size = fragp->fr_address;
+ if (size > 0)
+ {
+ flags |= SEC_HAS_CONTENTS;
+ /* @@ This is just an approximation. */
+ if (seginfo->fix_root)
+ flags |= SEC_RELOC;
+ x = bfd_set_section_flags (abfd, sec, flags);
+ assert (x == true);
+ }
+ size = md_section_align (sec, size);
+ x = bfd_set_section_size (abfd, sec, size);
+ assert (x == true);
+
+ /* If the size had to be rounded up, add some padding in the last
+ non-empty frag. */
+ newsize = bfd_get_section_size_before_reloc (sec);
+ assert (newsize >= size);
+ if (size != newsize)
+ {
+ fragS *last = seginfo->frchainP->frch_last;
+ fragp = seginfo->frchainP->frch_root;
+ while (fragp->fr_next != last)
+ fragp = fragp->fr_next;
+ last->fr_address = size;
+ fragp->fr_offset += newsize - size;
+ }
+ }
+#ifdef tc_frob_section
+ tc_frob_section (sec);
+#endif
+#ifdef obj_frob_section
+ obj_frob_section (sec);
+#endif
+}
+
+static void
+write_contents (abfd, sec, xxx)
+ bfd *abfd;
+ asection *sec;
+ char *xxx;
+{
+ segment_info_type *seginfo = seg_info (sec);
+ unsigned long offset = 0;
+ fragS *frags;
+ int i, n;
+ arelent **relocs;
+ fixS *fixp;
+
+ if (! (bfd_get_section_flags (abfd, sec) & SEC_LOAD))
+ return;
+
+ fixup_segment (seginfo->fix_root, sec);
+
+ for (i = 0, fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next)
+ if (fixp->fx_addsy)
+ {
+ symbolS *sym = fixp->fx_addsy;
+ asection *sec = sym->bsym->section;
+ if (sec == &bfd_und_section
+ || sec == &bfd_abs_section
+ || sec == &bfd_com_section)
+ continue;
+ if (sym->bsym == sec->symbol)
+ continue;
+ /* If the section symbol isn't going to be output, the relocs
+ at least should still work. If not, figure out what to do
+ when we run into that case. */
+ fixp->fx_offset += S_GET_VALUE (sym);
+ fixp->fx_addsy = symbol_find (sec->name);
+ if (!fixp->fx_addsy)
+ {
+ fixp->fx_addsy = symbol_make (sec->name);
+ fixp->fx_addsy->bsym = sec->symbol;
+ }
+ }
+
+ /* Force calculations (size, vma) to get done. */
+ bfd_set_section_contents (stdoutput, sec, "", 0, 0);
+
+ /* Set up reloc information as well. */
+ n = 0;
+ for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next)
+ n++;
+ relocs = (arelent **) bfd_alloc_by_size_t (stdoutput,
+ n * sizeof (arelent *));
+
+ for (frags = seginfo->frchainP->frch_root, fixp = seginfo->fix_root, i = 0;
+ frags;
+ frags = frags->fr_next)
+ {
+ int x;
+ unsigned long fill_size;
+ char *fill_literal;
+ long count;
+
+ assert (frags->fr_type == rs_fill);
+ while (fixp
+ && fixp->fx_frag == frags)
+ {
+ arelent *reloc;
+ extern arelent *tc_gen_reloc ();
+ char *data;
+ static bfd_reloc_status_type s;
+
+ if (fixp->fx_addsy == 0)
+ {
+ /* @@ Need some other flag to indicate which have already
+ been performed... */
+ n--;
+ goto next;
+ }
+ reloc = tc_gen_reloc (sec, fixp);
+ if (!reloc)
+ {
+ n--;
+ goto next;
+ }
+ data = frags->fr_literal + fixp->fx_where;
+ if (fixp->fx_where + 4 > frags->fr_fix + frags->fr_offset)
+ abort ();
+ s = bfd_perform_relocation (stdoutput, reloc, data - reloc->address,
+ sec, stdoutput);
+ switch (s)
+ {
+ case bfd_reloc_ok:
+ break;
+ default:
+ printf ("bad s value\n");
+ abort ();
+ }
+ relocs[i++] = reloc;
+ next:
+ fixp = fixp->fx_next;
+ }
+ if (frags->fr_fix)
+ {
+ x = bfd_set_section_contents (stdoutput, sec,
+ frags->fr_literal, offset,
+ frags->fr_fix);
+ assert (x == true);
+ offset += frags->fr_fix;
+ }
+ fill_literal = frags->fr_literal + frags->fr_fix;
+ fill_size = frags->fr_var;
+ count = frags->fr_offset;
+ assert (count >= 0);
+ if (fill_size && count)
+ while (count--)
+ {
+ x = bfd_set_section_contents (stdoutput, sec,
+ fill_literal, offset, fill_size);
+ assert (x == true);
+ offset += fill_size;
+ }
+ }
+ /* Did we miss any relocs? */
+ if (fixp != 0)
+ abort ();
+
+ if (n)
+ bfd_set_reloc (stdoutput, sec, relocs, n);
+}
+#endif
+
void
write_object_file ()
{
long object_file_size;
+ /* Do we really want to write it? */
+ {
+ int n_warns, n_errs;
+ n_warns = had_warnings ();
+ n_errs = had_errors ();
+ /* The -Z flag indicates that an object file should be generated,
+ regardless of warnings and errors. */
+ if (flagseen['Z'])
+ {
+ if (n_warns || n_errs)
+ as_warn ("%d error%s, %d warning%s, generating bad object file.\n",
+ n_errs, n_errs == 1 ? "" : "s",
+ n_warns, n_warns == 1 ? "" : "s");
+ }
+ else
+ {
+ if (n_errs)
+ as_fatal ("%d error%s, %d warning%s, no object file generated.\n",
+ n_errs, n_errs == 1 ? "" : "s",
+ n_warns, n_warns == 1 ? "" : "s");
+ }
+ }
+
#ifdef OBJ_VMS
/*
* Under VMS we try to be compatible with VAX-11 "C". Thus, we
*/
VMS_Check_For_Main ();
#endif /* VMS */
- /*
- * After every sub-segment, we fake an ".align ...". This conforms to
- * BSD4.2 brane-damage. We then fake ".fill 0" because that is the
- * kind of frag that requires least thought. ".align" frags like to
- * have a following frag since that makes calculating their intended
- * length trivial.
- */
+
+ /* After every sub-segment, we fake an ".align ...". This conforms to
+ BSD4.2 brane-damage. We then fake ".fill 0" because that is the kind of
+ frag that requires least thought. ".align" frags like to have a
+ following frag since that makes calculating their intended length
+ trivial.
+
+ @@ Is this really necessary?? */
#ifndef SUB_SEGMENT_ALIGN
+#ifdef BFD_ASSEMBLER
+#define SUB_SEGMENT_ALIGN (0)
+#else
#define SUB_SEGMENT_ALIGN (2)
+#endif
#endif
for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next)
{
-#ifdef OBJ_VMS
- /*
- * Under VAX/VMS, the linker (and PSECT specifications)
- * take care of correctly aligning the segments.
- * Doing the alignment here (on initialized data) can
- * mess up the calculation of global data PSECT sizes.
- */
-#undef SUB_SEGMENT_ALIGN
-#define SUB_SEGMENT_ALIGN ((frchainP->frch_seg != SEG_DATA) ? 2 : 0)
-#endif /* VMS */
+#ifdef BFD_ASSEMBLER
+ subseg_set (frchainP->frch_seg, frchainP->frch_subseg);
+#else
subseg_new (frchainP->frch_seg, frchainP->frch_subseg);
+#endif
frag_align (SUB_SEGMENT_ALIGN, NOP_OPCODE);
- /* frag_align will have left a new frag. */
- /* Use this last frag for an empty ".fill". */
- /*
- * For this segment ...
- * Create a last frag. Do not leave a "being filled in frag".
- */
+ /* frag_align will have left a new frag.
+ Use this last frag for an empty ".fill".
+
+ For this segment ...
+ Create a last frag. Do not leave a "being filled in frag". */
frag_wane (frag_now);
frag_now->fr_fix = 0;
know (frag_now->fr_next == NULL);
/* know( frags . obstack_c_base == frags . obstack_c_next_free ); */
/* Above shows we haven't left a half-completed object on obstack. */
- } /* walk the frag chain */
+ }
- /*
- * From now on, we don't care about sub-segments.
- * Build one frag chain for each segment. Linked thru fr_next.
- * We know that there is at least 1 text frchain & at least 1 data
- * frchain.
- */
+ /* 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. */
+ {
+ asection **seclist, *sec;
+ seclist = &stdoutput->sections;
+ while (seclist && *seclist)
+ {
+ sec = *seclist;
+ while (sec == big_section
+ || sec == reg_section
+ || sec == pass1_section
+ || sec == diff_section
+ || sec == absent_section)
+ {
+ sec = sec->next;
+ *seclist = sec;
+ stdoutput->section_count--;
+ if (!sec)
+ break;
+ }
+ if (*seclist)
+ seclist = &(*seclist)->next;
+ }
+ }
+
+ 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.
- */
-#ifndef OBJ_AOUT
+ /* 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 (flagseen['R'])
{
+#ifdef BFD_ASSEMBLER
+ 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;
else
text_fix_root = data_fix_root;
data_fix_root = NULL;
+#endif
}
#endif
+
+#ifdef BFD_ASSEMBLER
+ bfd_map_over_sections (stdoutput, relax_and_size_seg, (char *) 0);
+#else
relax_segment (text_frag_root, SEG_TEXT);
relax_segment (data_frag_root, SEG_DATA);
relax_segment (bss_frag_root, SEG_BSS);
bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]);
bss_address_frag.fr_address = bss_vma;
}
-#else
+#else /* ! OBJ_BOUT */
bss_address_frag.fr_address = (H_GET_TEXT_SIZE (&headers) +
H_GET_DATA_SIZE (&headers));
} /* for each bss frag */
}
-#endif
+#endif /* ! OBJ_BOUT */
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 */
+#ifndef BFD_ASSEMBLER
/*
*
* Crawl the symbol chain.
obj_crawl_symbol_chain (&headers);
if (string_byte_count == sizeof (string_byte_count))
- {
- string_byte_count = 0;
- } /* if no strings, then no count. */
+ string_byte_count = 0;
H_SET_STRING_SIZE (&headers, string_byte_count);
for (fragP = text_frag_root; fragP; fragP = fragP->fr_next)
{
- switch (fragP->fr_type)
- {
- case rs_align:
- case rs_org:
-#ifdef HANDLE_ALIGN
- HANDLE_ALIGN (fragP);
-#endif
- fragP->fr_type = rs_fill;
- know (fragP->fr_var == 1);
- know (fragP->fr_next != NULL);
-
- fragP->fr_offset = (fragP->fr_next->fr_address
- - fragP->fr_address
- - fragP->fr_fix);
- break;
-
- case rs_fill:
- break;
-
- case rs_machine_dependent:
- md_convert_frag (&headers, fragP);
-
- know ((fragP->fr_next == NULL) || ((fragP->fr_next->fr_address - fragP->fr_address) == fragP->fr_fix));
-
- /*
- * After md_convert_frag, we make the frag into a ".space 0".
- * Md_convert_frag() should set up any fixSs and constants
- * required.
- */
- frag_wane (fragP);
- break;
-
-#ifndef WORKING_DOT_WORD
- case rs_broken_word:
- {
- struct broken_word *lie;
- extern md_short_jump_size;
- extern md_long_jump_size;
-
- if (fragP->fr_subtype)
- {
- fragP->fr_fix += md_short_jump_size;
- for (lie = (struct broken_word *) (fragP->fr_symbol); lie && lie->dispfrag == fragP; lie = lie->next_broken_word)
- if (lie->added == 1)
- fragP->fr_fix += md_long_jump_size;
- }
- frag_wane (fragP);
- }
- break;
-#endif
-
- default:
- BAD_CASE (fragP->fr_type);
- break;
- } /* switch (fr_type) */
+ cvt_frag_to_fill (&headers, fragP);
- if (!((fragP->fr_next == NULL)
+ /* 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)
+ || fragP->fr_next == data_frag_root
#endif
|| ((fragP->fr_next->fr_address - fragP->fr_address)
- == (fragP->fr_fix + (fragP->fr_offset * fragP->fr_var)))))
- {
- fprintf (stderr, "assertion failed: file `%s', line %d\n",
- __FILE__, __LINE__ - 4);
- exit (1);
- }
- } /* for each frag. */
+ == (fragP->fr_fix + fragP->fr_offset * fragP->fr_var))))
+ abort ();
+#endif
+ }
+#endif /* ! BFD_ASSEMBLER */
#ifndef WORKING_DOT_WORD
{
for (lie = broken_words; lie; lie = lie->next_broken_word)
if (!lie->added)
{
+#ifdef BFD_ASSEMBLER
+ fix_new (lie->frag, lie->word_goes_here - lie->frag->fr_literal,
+ 2, lie->add, lie->sub, lie->addnum, 0, BFD_RELOC_NONE);
+#else
+#if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE)
+ fix_new (lie->frag, lie->word_goes_here - lie->frag->fr_literal,
+ 2, lie->add,
+ lie->sub, lie->addnum,
+ 0, NO_RELOC);
+#else
#ifdef TC_NS32K
fix_new_ns32k (lie->frag,
lie->word_goes_here - lie->frag->fr_literal,
lie->addnum,
0, 0, 2, 0, 0);
#else
-# if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE)
- fix_new (lie->frag, lie->word_goes_here - lie->frag->fr_literal,
- 2, lie->add,
- lie->sub, lie->addnum,
- 0, NO_RELOC);
-# else
fix_new (lie->frag, lie->word_goes_here - lie->frag->fr_literal,
2, lie->add,
lie->sub, lie->addnum,
0, 0);
-
-# endif /* tc_sparc|tc_a29k|need_fx_r_type */
#endif /* TC_NS32K */
- /* md_number_to_chars(lie->word_goes_here,
- S_GET_VALUE(lie->add)
- + lie->addnum
- - S_GET_VALUE(lie->sub),
- 2); */
+#endif /* TC_SPARC|TC_A29K|NEED_FX_R_TYPE */
+#endif /* BFD_ASSEMBLER */
*prevP = lie->next_broken_word;
}
else
long from_addr, to_addr;
int n, m;
- extern md_short_jump_size;
- extern md_long_jump_size;
-
fragP = lie->dispfrag;
- /* Find out how many broken_words go here */
+ /* Find out how many broken_words go here. */
n = 0;
for (untruth = lie; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word)
if (untruth->added == 1)
table_ptr = lie->dispfrag->fr_opcode;
table_addr = lie->dispfrag->fr_address + (table_ptr - lie->dispfrag->fr_literal);
- /* Create the jump around the long jumps */
- /* This is a short jump from table_ptr+0 to table_ptr+n*long_jump_size */
+ /* Create the jump around the long jumps. This is a short
+ jump from table_ptr+0 to table_ptr+n*long_jump_size. */
from_addr = table_addr;
to_addr = table_addr + md_short_jump_size + n * md_long_jump_size;
md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add);
}
#endif /* not WORKING_DOT_WORD */
+#ifndef BFD_ASSEMBLER
#ifndef OBJ_VMS
{ /* not vms */
/*
H_SET_ENTRY_POINT (&headers, 0);
obj_pre_write_hook (&headers); /* extra coff stuff */
- if ((had_warnings () && flagseen['Z'])
- || had_errors () > 0)
- {
- if (flagseen['Z'])
- {
- as_warn ("%d error%s, %d warning%s, generating bad object file.\n",
- had_errors (), had_errors () == 1 ? "" : "s",
- had_warnings (), had_warnings () == 1 ? "" : "s");
- }
- else
- {
- as_fatal ("%d error%s, %d warning%s, no object file generated.\n",
- had_errors (), had_errors () == 1 ? "" : "s",
- had_warnings (), had_warnings () == 1 ? "" : "s");
- } /* on want output */
- } /* on error condition */
object_file_size = H_GET_FILE_SIZE (&headers);
next_object_file_charP = the_object_file = xmalloc (object_file_size);
know ((next_object_file_charP - the_object_file) == H_GET_HEADER_SIZE (&headers));
/*
- * Emit code.
- */
+ * Emit code.
+ */
for (fragP = text_frag_root; fragP; fragP = fragP->fr_next)
{
register long count;
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.
- */
+ * 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.
- */
+ * 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);
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.
- */
+ * 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)));
obj_emit_strings (&next_object_file_charP);
} /* only if we have a string table */
- /* 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) + H_GET_STRING_SIZE(&headers)));
- */
- /* know(next_object_file_charP == the_object_file + object_file_size);*/
-
#ifdef BFD_HEADERS
bfd_seek (stdoutput, 0, 0);
bfd_write (the_object_file, 1, object_file_size, stdoutput);
H_GET_BSS_SIZE (&headers),
text_frag_root, data_frag_root);
#endif /* VMS */
-} /* write_object_file() */
+#else /* BFD_ASSEMBLER */
+#ifdef obj_frob_file
+ obj_frob_file ();
+#endif
-#else
+ /* Set up symbol table, and write it out. */
+ if (symbol_rootP)
+ {
+ int i = 0, n;
+ symbolS *symp;
+
+ for (symp = symbol_rootP; symp; symp = symbol_next (symp))
+ {
+ S_SET_VALUE (symp, S_GET_VALUE (symp) + symp->sy_frag->fr_address);
+ /* 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);
+#if 0
+ printf ("symbol `%s'\n\t@%x: value=%d type=%d forward=%x seg=%s\n",
+ S_GET_NAME (symp), symp,
+ S_GET_VALUE (symp),
+ S_GET_DATA_TYPE (symp),
+ symp->sy_forward,
+ segment_name (symp->bsym->section));
+#endif
+ {
+ int punt = 0;
+#ifdef obj_frob_symbol
+ obj_frob_symbol (symp, punt);
+ if (punt)
+ goto punt_it;
+#endif
+#ifdef tc_frob_symbol
+ tc_frob_symbol (symp, punt);
+ if (punt)
+ goto punt_it;
+#endif
+ }
+ /* If we don't want to keep this symbol, splice it out of the
+ chain now. */
+ if (S_IS_LOCAL (symp))
+ {
+ symbolS *prev, *next;
+ punt_it:
+ prev = symbol_previous (symp);
+ next = symbol_next (symp);
+#ifdef DEBUG
+ /* debugging: verify consistency */
+ {
+ symbolS *p = symp, *n = symp;
+ while (symbol_previous (p))
+ p = symbol_previous (p);
+ while (symbol_next (n))
+ n = symbol_next (n);
+ verify_symbol_chain (p, n);
+ }
+#endif
+ if (prev)
+ {
+ symbol_next (prev) = next;
+ symp = prev;
+ }
+ else
+ abort ();
+ if (next)
+ symbol_previous (next) = prev;
+ else
+ symbol_lastP = prev;
+#ifdef DEBUG
+ /* debugging: verify consistency */
+ {
+ symbolS *p = symp, *n = symp;
+ while (symbol_previous (p))
+ p = symbol_previous (p);
+ while (symbol_next (n))
+ n = symbol_next (n);
+ verify_symbol_chain (p, n);
+ }
#endif
+ continue;
+ }
+ i++;
+ }
+ n = i;
+ if (n)
+ {
+ asymbol **asympp;
+ boolean result;
+
+ asympp = (asymbol **) bfd_alloc (stdoutput, n * sizeof (asymbol *));
+ symp = symbol_rootP;
+ for (i = 0; i < n; i++, symp = symbol_next (symp))
+ {
+ asympp[i] = symp->bsym;
+ symp->written = 1;
+ }
+ result = bfd_set_symtab (stdoutput, asympp, n);
+ assert (result == true);
+ }
+ }
+
+ /* Now that all the sizes are known, and contents correct, we can
+ start writing the file. */
+ bfd_map_over_sections (stdoutput, write_contents, (char *) 0);
+
+ output_file_close (out_file_name);
+#endif /* BFD_ASSEMBLER */
+}
+#endif /* BFD */
/*
* relax_segment()
*/
+static int
+is_dnrange (f1, f2)
+ struct frag *f1;
+ struct frag *f2;
+{
+ for (; f1; f1 = f1->fr_next)
+ if (f1->fr_next == f2)
+ return 1;
+ return 0;
+}
+
+/* Relax_align. Advance location counter to next address that has 'alignment'
+ lowest order bits all 0s. */
+
+/* How many addresses does the .align take? */
+static relax_addressT
+relax_align (address, alignment)
+ register relax_addressT address; /* Address now. */
+ register long alignment; /* Alignment (binary). */
+{
+ relax_addressT mask;
+ relax_addressT new_address;
+
+ mask = ~((~0) << alignment);
+ new_address = (address + mask) & (~mask);
+ if (linkrelax)
+ /* We must provide lots of padding, so the linker can discard it
+ when needed. The linker will not add extra space, ever. */
+ new_address += (1 << alignment);
+ return (new_address - address);
+}
void
relax_segment (segment_frag_root, segment)
struct frag *segment_frag_root;
- segT segment; /* SEG_DATA or SEG_TEXT */
+ segT segment;
{
register struct frag *fragP;
register relax_addressT address;
-#ifndef MANY_SEGMENTS
+#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. */
{
struct broken_word *lie;
struct broken_word *untruth;
- extern int md_short_jump_size;
- extern int md_long_jump_size;
/* Yes this is ugly (storing the broken_word pointer
in the symbol slot). Still, this whole chunk of
} /* case rs_broken_word */
#endif
case rs_align:
- growth = (relax_align ((relax_addressT) (address + fragP->fr_fix), offset)
- - relax_align ((relax_addressT) (was_address + fragP->fr_fix), offset));
+ growth = (relax_align ((relax_addressT) (address
+ + fragP->fr_fix),
+ offset)
+ - relax_align ((relax_addressT) (was_address
+ + fragP->fr_fix),
+ offset));
break;
case rs_org:
if (symbolP)
{
-#ifdef MANY_SEGMENTS
-#else
- 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);
+#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));
+ know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE)
+ || (symbolP->sy_frag == &zero_address_frag));
#endif
target += S_GET_VALUE (symbolP)
+ symbolP->sy_frag->fr_address;
know (fragP->fr_next);
after = fragP->fr_next->fr_address;
growth = ((target - after) > 0) ? (target - after) : 0;
- /* Growth may be -ve, but variable part of frag cannot have
- fewer than 0 chars. That is, we can't .org backwards. */
+ /* Growth may be negative, but variable part of frag
+ cannot have fewer than 0 chars. That is, we can't
+ .org backwards. */
growth -= stretch; /* This is an absolute growth factor */
break;
if (symbolP)
{
-#ifndef MANY_SEGMENTS
- 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));
+#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 (symbolP->sy_frag);
- know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) || symbolP->sy_frag == &zero_address_frag);
+ know (!(S_GET_SEGMENT (symbolP) == absolute_section)
+ || symbolP->sy_frag == &zero_address_frag);
target +=
S_GET_VALUE (symbolP)
+ symbolP->sy_frag->fr_address;
*/
} /* relax_segment() */
-/*
- * Relax_align. Advance location counter to next address that has 'alignment'
- * lowest order bits all 0s.
- */
-
-/* How many addresses does the .align take? */
-static relax_addressT
-relax_align (address, alignment)
- register relax_addressT address; /* Address now. */
- register long alignment; /* Alignment (binary). */
-{
- relax_addressT mask;
- relax_addressT new_address;
-
- mask = ~((~0) << alignment);
- new_address = (address + mask) & (~mask);
- if (linkrelax)
- /* We must provide lots of padding, so the linker can discard it
- when needed. The linker will not add extra space, ever. */
- new_address += (1 << alignment);
- return (new_address - address);
-} /* relax_align() */
-
/* fixup_segment()
Go through all the fixS's in a segment and see which ones can be
register long seg_reloc_count;
register symbolS *add_symbolP;
register symbolS *sub_symbolP;
- register long add_number;
+ long add_number;
register int size;
register char *place;
register long where;
register char pcrel;
register fragS *fragP;
- register segT add_symbol_segment = SEG_ABSOLUTE;
+ register segT add_symbol_segment = absolute_section;
- /* FIXME: remove this line *//* fixS *orig = fixP; */
seg_reloc_count = 0;
-#ifdef TC_I960
/* If the linker is doing the relaxing, we must not do any fixups */
if (linkrelax)
- {
- for (; fixP; fixP = fixP->fx_next)
- {
- seg_reloc_count++;
- }
- }
+ for (; fixP; fixP = fixP->fx_next)
+ seg_reloc_count++;
else
-#endif
for (; fixP; fixP = fixP->fx_next)
{
fragP = fixP->fx_frag;
#ifdef TC_I960
if (fixP->fx_callj && TC_S_IS_CALLNAME (add_symbolP))
{
- /* Relocation should be done via the
- associated 'bal' entry point
- symbol. */
+ /* Relocation should be done via the associated 'bal'
+ entry point symbol. */
if (!TC_S_IS_BALNAME (tc_get_bal_of_call (add_symbolP)))
{
continue;
}
fixP->fx_addsy = add_symbolP = tc_get_bal_of_call (add_symbolP);
- } /* callj relocation */
+ }
#endif
sub_symbolP = fixP->fx_subsy;
add_number = fixP->fx_offset;
pcrel = fixP->fx_pcrel;
if (add_symbolP)
- {
- add_symbol_segment = S_GET_SEGMENT (add_symbolP);
- } /* if there is an addend */
+ add_symbol_segment = S_GET_SEGMENT (add_symbolP);
if (sub_symbolP)
{
if (!add_symbolP)
{
/* Its just -sym */
- if (S_GET_SEGMENT (sub_symbolP) != SEG_ABSOLUTE)
- {
- as_bad ("Negative of non-absolute symbol %s", S_GET_NAME (sub_symbolP));
- } /* not absolute */
+ if (S_GET_SEGMENT (sub_symbolP) != absolute_section)
+ as_bad ("Negative of non-absolute symbol %s",
+ S_GET_NAME (sub_symbolP));
add_number -= S_GET_VALUE (sub_symbolP);
-
- /* if sub_symbol is in the same segment that add_symbol
- and add_symbol is either in DATA, TEXT, BSS or ABSOLUTE */
}
else if ((S_GET_SEGMENT (sub_symbolP) == add_symbol_segment)
&& (SEG_NORMAL (add_symbol_segment)
- || (add_symbol_segment == SEG_ABSOLUTE)))
+ || (add_symbol_segment == absolute_section)))
{
- /* Difference of 2 symbols from same segment. */
- /* Can't make difference of 2 undefineds: 'value' means */
- /* something different for N_UNDF. */
+ /* Difference of 2 symbols from same segment.
+ Can't make difference of 2 undefineds: 'value' means
+ something different for N_UNDF. */
#ifdef TC_I960
/* Makes no sense to use the difference of 2 arbitrary symbols
- * as the target of a call instruction.
- */
+ as the target of a call instruction. */
if (fixP->fx_callj)
{
as_bad ("callj to difference of 2 symbols");
else
{
/* Different segments in subtraction. */
- know (!(S_IS_EXTERNAL (sub_symbolP) && (S_GET_SEGMENT (sub_symbolP) == SEG_ABSOLUTE)));
+ know (!(S_IS_EXTERNAL (sub_symbolP)
+ && (S_GET_SEGMENT (sub_symbolP) == absolute_section)));
- if ((S_GET_SEGMENT (sub_symbolP) == SEG_ABSOLUTE))
+ if ((S_GET_SEGMENT (sub_symbolP) == absolute_section))
{
add_number -= S_GET_VALUE (sub_symbolP);
}
if (add_symbol_segment == this_segment_type && pcrel)
{
/*
- * This fixup was made when the symbol's segment was
- * SEG_UNKNOWN, but it is now in the local segment.
- * So we know how to do the address without relocation.
- */
+ * This fixup was made when the symbol's segment was
+ * SEG_UNKNOWN, but it is now in the local segment.
+ * So we know how to do the address without relocation.
+ */
#ifdef TC_I960
- /* reloc_callj() may replace a 'call' with a 'calls' or a 'bal',
- * in which cases it modifies *fixP as appropriate. In the case
- * of a 'calls', no further work is required, and *fixP has been
- * set up to make the rest of the code below a no-op.
- */
+ /* reloc_callj() may replace a 'call' with a 'calls' or a
+ 'bal', in which cases it modifies *fixP as appropriate.
+ In the case of a 'calls', no further work is required,
+ and *fixP has been set up to make the rest of the code
+ below a no-op. */
reloc_callj (fixP);
#endif /* TC_I960 */
}
else
{
- switch (add_symbol_segment)
+ if (add_symbol_segment == absolute_section)
{
- case SEG_ABSOLUTE:
#ifdef TC_I960
- reloc_callj (fixP); /* See comment about reloc_callj() above*/
+ /* See comment about reloc_callj() above. */
+ reloc_callj (fixP);
#endif /* TC_I960 */
add_number += S_GET_VALUE (add_symbolP);
fixP->fx_addsy = NULL;
add_symbolP = NULL;
- break;
- default:
- seg_reloc_count++;
- add_number += S_GET_VALUE (add_symbolP);
- break;
-
- case SEG_UNKNOWN:
+ }
+ else if (add_symbol_segment == undefined_section
+#ifdef BFD_ASSEMBLER
+ || add_symbol_segment == &bfd_com_section
+#endif
+ )
+ {
#ifdef TC_I960
if ((int) fixP->fx_bit_fixP == 13)
{
/* This is a COBR instruction. They have only a
- * 13-bit displacement and are only to be used
- * for local branches: flag as error, don't generate
- * relocation.
- */
+ * 13-bit displacement and are only to be used
+ * for local branches: flag as error, don't generate
+ * relocation.
+ */
as_bad ("can't use COBR format with external label");
fixP->fx_addsy = NULL; /* No relocations please. */
continue;
#endif /* TE_I386AIX */
#endif /* OBJ_COFF */
++seg_reloc_count;
-
- break;
-
-
- } /* switch on symbol seg */
+ }
+ else
+ {
+ seg_reloc_count++;
+ add_number += S_GET_VALUE (add_symbolP);
+ }
} /* if not in local seg */
} /* if there was a + symbol */
if (!fixP->fx_bit_fixP)
{
if ((size == 1 &&
- (add_number & ~0xFF) && ((add_number & ~0xFF) != (-1 & ~0xFF))) ||
- (size == 2 &&
- (add_number & ~0xFFFF) && ((add_number & ~0xFFFF) != (-1 & ~0xFFFF))))
+ (add_number & ~0xFF)
+ && ((add_number & ~0xFF) != (-1 & ~0xFF)))
+ || (size == 2
+ && (add_number & ~0xFFFF)
+ && ((add_number & ~0xFFFF) != (-1 & ~0xFFFF))))
{
as_bad ("Value of %d too large for field of %d bytes at 0x%x",
add_number, size, fragP->fr_address + where);
} /* generic error checking */
#ifdef WARN_SIGNED_OVERFLOW_WORD
- /* Warn if a .word value is too large when
- treated as a signed number. We already
- know it is not too negative. This is to
- catch over-large switches generated by gcc
- on the 68k. */
+ /* Warn if a .word value is too large when treated as a signed
+ number. We already know it is not too negative. This is to
+ catch over-large switches generated by gcc on the 68k. */
if (!flagseen['J']
&& size == 2
&& add_number > 0x7fff)
#endif
} /* not a bit fix */
+#ifdef BFD_ASSEMBLER
+ md_apply_fix (fixP, &add_number);
+#else
md_apply_fix (fixP, add_number);
+#endif
} /* For each fixS in this segment. */
#ifdef OBJ_COFF
return (seg_reloc_count);
} /* fixup_segment() */
-
-static int
-is_dnrange (f1, f2)
- struct frag *f1;
- struct frag *f2;
-{
- while (f1)
- {
- if (f1->fr_next == f2)
- return 1;
- f1 = f1->fr_next;
- }
- return 0;
-} /* is_dnrange() */
-
-/* Append a string onto another string, bumping the pointer along. */
-void
-append (charPP, fromP, length)
- char **charPP;
- char *fromP;
- unsigned long length;
-{
- if (length)
- { /* Don't trust memcpy() of 0 chars. */
- memcpy (*charPP, fromP, (int) length);
- *charPP += length;
- }
-}
-
-int section_alignment[SEG_MAXIMUM_ORDINAL];
-
-/*
- * 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
- * least one object format really uses this info.
- */
-void
-record_alignment (seg, align)
- segT seg; /* Segment to which alignment pertains */
- int align; /* Alignment, as a power of 2
- * (e.g., 1 => 2-byte boundary, 2 => 4-byte boundary, etc.)
- */
-{
-
- if (align > section_alignment[(int) seg])
- {
- section_alignment[(int) seg] = align;
- } /* if highest yet */
-
- return;
-} /* record_alignment() */
-
/* end of write.c */
projects / binutils-gdb.git / commitdiff