/* POWER/PowerPC XCOFF linker support.
- Copyright 1995 Free Software Foundation, Inc.
+ Copyright 1995, 1996 Free Software Foundation, Inc.
Written by Ian Lance Taylor <ian@cygnus.com>, Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
} u;
/* If this symbol is a function entry point which is called, this
- field holds a pointer to the function descriptor. */
+ field holds a pointer to the function descriptor. If this symbol
+ is a function descriptor, this field holds a pointer to the
+ function entry point. */
struct xcoff_link_hash_entry *descriptor;
/* The .loader symbol table entry, if there is one. */
#define XCOFF_REF_REGULAR (01)
/* Symbol is defined by a regular object. */
#define XCOFF_DEF_REGULAR (02)
- /* Symbol is referenced by a dynamic object. */
-#define XCOFF_REF_DYNAMIC (04)
+ /* Symbol is defined by a dynamic object. */
+#define XCOFF_DEF_DYNAMIC (04)
/* Symbol is used in a reloc being copied into the .loader section. */
#define XCOFF_LDREL (010)
/* Symbol is the entry point. */
#define XCOFF_MARK (02000)
/* Symbol size is recorded in size_list list from hash table. */
#define XCOFF_HAS_SIZE (04000)
+ /* Symbol is a function descriptor. */
+#define XCOFF_DESCRIPTOR (010000)
/* The storage mapping class. */
unsigned char smclas;
linkage code. */
asection *toc_section;
+ /* The .ds section we use to hold function descriptors which we
+ create for exported symbols. */
+ asection *descriptor_section;
+
/* The list of import files. */
struct xcoff_import_file *imports;
struct xcoff_link_hash_entry *h;
bfd_size_type size;
} *size_list;
+
+ /* Magic sections: _text, _etext, _data, _edata, _end, end. */
+ asection *special_sections[6];
};
/* Information we keep for each section in the output file during the
bfd_byte *external_relocs;
};
+static void xcoff_swap_ldhdr_in
+ PARAMS ((bfd *, const struct external_ldhdr *, struct internal_ldhdr *));
static void xcoff_swap_ldhdr_out
PARAMS ((bfd *, const struct internal_ldhdr *, struct external_ldhdr *));
+static void xcoff_swap_ldsym_in
+ PARAMS ((bfd *, const struct external_ldsym *, struct internal_ldsym *));
static void xcoff_swap_ldsym_out
PARAMS ((bfd *, const struct internal_ldsym *, struct external_ldsym *));
static void xcoff_swap_ldrel_out
struct bfd_link_order *));
static int xcoff_sort_relocs PARAMS ((const PTR, const PTR));
\f
-/* Routines to swap information in the XCOFF .loader section. We only
- need to swap this information out, not in. I believe that only the
- loader needs to swap this information in. If we ever need to write
- an XCOFF loader, this stuff will need to be moved to another file
- shared by the linker (which XCOFF calls the ``binder'') and the
- loader. */
+/* Routines to swap information in the XCOFF .loader section. If we
+ ever need to write an XCOFF loader, this stuff will need to be
+ moved to another file shared by the linker (which XCOFF calls the
+ ``binder'') and the loader. */
+
+/* Swap in the ldhdr structure. */
+
+static void
+xcoff_swap_ldhdr_in (abfd, src, dst)
+ bfd *abfd;
+ const struct external_ldhdr *src;
+ struct internal_ldhdr *dst;
+{
+ dst->l_version = bfd_get_32 (abfd, src->l_version);
+ dst->l_nsyms = bfd_get_32 (abfd, src->l_nsyms);
+ dst->l_nreloc = bfd_get_32 (abfd, src->l_nreloc);
+ dst->l_istlen = bfd_get_32 (abfd, src->l_istlen);
+ dst->l_nimpid = bfd_get_32 (abfd, src->l_nimpid);
+ dst->l_impoff = bfd_get_32 (abfd, src->l_impoff);
+ dst->l_stlen = bfd_get_32 (abfd, src->l_stlen);
+ dst->l_stoff = bfd_get_32 (abfd, src->l_stoff);
+}
/* Swap out the ldhdr structure. */
bfd_put_32 (abfd, src->l_stoff, dst->l_stoff);
}
+/* Swap in the ldsym structure. */
+
+static void
+xcoff_swap_ldsym_in (abfd, src, dst)
+ bfd *abfd;
+ const struct external_ldsym *src;
+ struct internal_ldsym *dst;
+{
+ if (bfd_get_32 (abfd, src->_l._l_l._l_zeroes) != 0)
+ memcpy (dst->_l._l_name, src->_l._l_name, SYMNMLEN);
+ else
+ {
+ dst->_l._l_l._l_zeroes = 0;
+ dst->_l._l_l._l_offset = bfd_get_32 (abfd, src->_l._l_l._l_offset);
+ }
+ dst->l_value = bfd_get_32 (abfd, src->l_value);
+ dst->l_scnum = bfd_get_16 (abfd, src->l_scnum);
+ dst->l_smtype = bfd_get_8 (abfd, src->l_smtype);
+ dst->l_smclas = bfd_get_8 (abfd, src->l_smclas);
+ dst->l_ifile = bfd_get_32 (abfd, src->l_ifile);
+ dst->l_parm = bfd_get_32 (abfd, src->l_parm);
+}
+
/* Swap out the ldsym structure. */
static void
bfd_put_32 (abfd, src->l_parm, dst->l_parm);
}
+/* As it happens, we never need to swap in the ldrel structure. */
+
/* Swap out the ldrel structure. */
static void
ret = ((struct xcoff_link_hash_entry *)
bfd_hash_allocate (table, sizeof (struct xcoff_link_hash_entry)));
if (ret == (struct xcoff_link_hash_entry *) NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return (struct bfd_hash_entry *) ret;
- }
+ return (struct bfd_hash_entry *) ret;
/* Call the allocation method of the superclass. */
ret = ((struct xcoff_link_hash_entry *)
ret = ((struct xcoff_link_hash_table *)
bfd_alloc (abfd, sizeof (struct xcoff_link_hash_table)));
if (ret == (struct xcoff_link_hash_table *) NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return (struct bfd_link_hash_table *) NULL;
- }
+ return (struct bfd_link_hash_table *) NULL;
if (! _bfd_link_hash_table_init (&ret->root, abfd, xcoff_link_hash_newfunc))
{
bfd_release (abfd, ret);
memset (&ret->ldhdr, 0, sizeof (struct internal_ldhdr));
ret->linkage_section = NULL;
ret->toc_section = NULL;
+ ret->descriptor_section = NULL;
ret->imports = NULL;
ret->file_align = 0;
ret->textro = false;
ret->gc = false;
+ memset (ret->special_sections, 0, sizeof ret->special_sections);
/* The linker will always generate a full a.out header. We need to
record that fact now, before the sizeof_headers routine could be
bfd_size_type min, max, this;
if (count < 2)
- return 0;
+ {
+ if (count == 1 && relocs[0].r_vaddr < address)
+ return 1;
+ else
+ return 0;
+ }
min = 0;
max = count;
if ((abfd->flags & DYNAMIC) != 0
&& ! info->static_link)
- return xcoff_link_add_dynamic_symbols (abfd, info);
-
- n_tmask = coff_data (abfd)->local_n_tmask;
- n_btshft = coff_data (abfd)->local_n_btshft;
-
- /* Define macros so that ISFCN, et. al., macros work correctly. */
-#define N_TMASK n_tmask
-#define N_BTSHFT n_btshft
+ {
+ if (! xcoff_link_add_dynamic_symbols (abfd, info))
+ return false;
+ }
/* We need to build a .loader section, so we do it here. This won't
- work if we're producing an XCOFF output file with no non dynamic
- XCOFF input files. FIXME. */
+ work if we're producing an XCOFF output file with no XCOFF input
+ files. FIXME. */
if (xcoff_hash_table (info)->loader_section == NULL)
{
asection *lsec;
goto error_return;
xcoff_hash_table (info)->linkage_section = lsec;
lsec->flags |= SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+ lsec->alignment_power = 2;
}
/* Likewise for the TOC section. */
if (xcoff_hash_table (info)->toc_section == NULL)
tsec->flags |= SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
tsec->alignment_power = 2;
}
+ /* Likewise for the descriptor section. */
+ if (xcoff_hash_table (info)->descriptor_section == NULL)
+ {
+ asection *dsec;
+
+ dsec = bfd_make_section_anyway (abfd, ".ds");
+ if (dsec == NULL)
+ goto error_return;
+ xcoff_hash_table (info)->descriptor_section = dsec;
+ dsec->flags |= SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+ dsec->alignment_power = 2;
+ }
/* Likewise for the .debug section. */
if (xcoff_hash_table (info)->debug_section == NULL)
{
dsec->flags |= SEC_HAS_CONTENTS | SEC_IN_MEMORY;
}
+ if ((abfd->flags & DYNAMIC) != 0
+ && ! info->static_link)
+ return true;
+
+ n_tmask = coff_data (abfd)->local_n_tmask;
+ n_btshft = coff_data (abfd)->local_n_btshft;
+
+ /* Define macros so that ISFCN, et. al., macros work correctly. */
+#define N_TMASK n_tmask
+#define N_BTSHFT n_btshft
+
if (info->keep_memory)
default_copy = false;
else
(symcount
* sizeof (struct xcoff_link_hash_entry *))));
if (sym_hash == NULL && symcount != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
coff_data (abfd)->sym_hashes = (struct coff_link_hash_entry **) sym_hash;
memset (sym_hash, 0,
(size_t) symcount * sizeof (struct xcoff_link_hash_entry *));
csect_cache = ((asection **)
bfd_alloc (abfd, symcount * sizeof (asection *)));
if (csect_cache == NULL && symcount != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
xcoff_data (abfd)->csects = csect_cache;
memset (csect_cache, 0, (size_t) symcount * sizeof (asection *));
scanning along the relocs as we process the csects. We index
into reloc_info using the section target_index. */
reloc_info = ((struct reloc_info_struct *)
- malloc ((abfd->section_count + 1)
- * sizeof (struct reloc_info_struct)));
+ bfd_malloc ((abfd->section_count + 1)
+ * sizeof (struct reloc_info_struct)));
if (reloc_info == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
memset ((PTR) reloc_info, 0,
(abfd->section_count + 1) * sizeof (struct reloc_info_struct));
xcoff_read_internal_relocs (abfd, o, true, (bfd_byte *) NULL,
false, (struct internal_reloc *) NULL);
reloc_info[o->target_index].csects =
- (asection **) malloc (o->reloc_count * sizeof (asection *));
+ (asection **) bfd_malloc (o->reloc_count * sizeof (asection *));
if (reloc_info[o->target_index].csects == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
memset (reloc_info[o->target_index].csects, 0,
o->reloc_count * sizeof (asection *));
}
{
bfd_byte *linenos;
- linenos = (bfd_byte *) malloc (o->lineno_count * linesz);
+ linenos = (bfd_byte *) bfd_malloc (o->lineno_count * linesz);
if (linenos == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
reloc_info[o->target_index].linenos = linenos;
if (bfd_seek (abfd, o->line_filepos, SEEK_SET) != 0
|| (bfd_read (linenos, linesz, o->lineno_count, abfd)
bfd_set_error (bfd_error_bad_value);
goto error_return;
}
- section = bfd_und_section_ptr;
+
+ /* An XMC_XO external reference is actually a reference to
+ an absolute location. */
+ if (aux.x_csect.x_smclas != XMC_XO)
+ section = bfd_und_section_ptr;
+ else
+ {
+ section = bfd_abs_section_ptr;
+ value = sym.n_value;
+ }
break;
case XTY_SD:
((struct coff_section_tdata *)
bfd_zalloc (abfd, sizeof (struct coff_section_tdata)));
if (csect->used_by_bfd == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
coff_section_data (abfd, csect)->tdata =
bfd_zalloc (abfd, sizeof (struct xcoff_section_tdata));
if (coff_section_data (abfd, csect)->tdata == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
xcoff_section_data (abfd, csect)->enclosing = enclosing;
xcoff_section_data (abfd, csect)->lineno_count =
enclosing->lineno_count;
((struct coff_section_tdata *)
bfd_zalloc (abfd, sizeof (struct coff_section_tdata)));
if (csect->used_by_bfd == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
coff_section_data (abfd, csect)->tdata =
bfd_zalloc (abfd, sizeof (struct xcoff_section_tdata));
if (coff_section_data (abfd, csect)->tdata == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
xcoff_section_data (abfd, csect)->first_symndx = csect_index;
if (first_csect == NULL)
break;
}
+ /* Check for magic symbol names. */
+ if ((smtyp == XTY_SD || smtyp == XTY_CM)
+ && aux.x_csect.x_smclas != XMC_TC)
+ {
+ int i;
+
+ i = -1;
+ if (name[0] == '_')
+ {
+ if (strcmp (name, "_text") == 0)
+ i = 0;
+ else if (strcmp (name, "_etext") == 0)
+ i = 1;
+ else if (strcmp (name, "_data") == 0)
+ i = 2;
+ else if (strcmp (name, "_edata") == 0)
+ i = 3;
+ else if (strcmp (name, "_end") == 0)
+ i = 4;
+ }
+ else if (name[0] == 'e' && strcmp (name, "end") == 0)
+ i = 5;
+
+ if (i != -1)
+ xcoff_hash_table (info)->special_sections[i] = csect;
+ }
+
/* Now we have enough information to add the symbol to the
linker hash table. */
(flagword) 0, bfd_und_section_ptr,
(bfd_vma) 0, (const char *) NULL, false,
true,
- (struct bfd_link_hash_entry **) NULL)))
+ (struct bfd_link_hash_entry **) &hds)))
goto error_return;
}
+ hds->flags |= XCOFF_DESCRIPTOR;
+ BFD_ASSERT ((hds->flags & XCOFF_CALLED) == 0
+ && (h->flags & XCOFF_DESCRIPTOR) == 0);
+ hds->descriptor = h;
h->descriptor = hds;
}
}
bfd *abfd;
struct bfd_link_info *info;
{
- bfd_size_type symesz;
- bfd_byte *esym;
- bfd_byte *esym_end;
+ asection *lsec;
+ bfd_byte *buf = NULL;
+ struct internal_ldhdr ldhdr;
+ const char *strings;
+ struct external_ldsym *elsym, *elsymend;
struct xcoff_import_file *n;
const char *bname;
const char *mname;
("%s: XCOFF shared object when not producing XCOFF output",
bfd_get_filename (abfd));
bfd_set_error (bfd_error_invalid_operation);
- return false;
+ goto error_return;
+ }
+
+ /* The symbols we use from a dynamic object are not the symbols in
+ the normal symbol table, but, rather, the symbols in the export
+ table. If there is a global symbol in a dynamic object which is
+ not in the export table, the loader will not be able to find it,
+ so we don't want to find it either. Also, on AIX 4.1.3, shr.o in
+ libc.a has symbols in the export table which are not in the
+ symbol table. */
+
+ /* Read in the .loader section. FIXME: We should really use the
+ o_snloader field in the a.out header, rather than grabbing the
+ section by name. */
+ lsec = bfd_get_section_by_name (abfd, ".loader");
+ if (lsec == NULL)
+ {
+ (*_bfd_error_handler)
+ ("%s: dynamic object with no .loader section",
+ bfd_get_filename (abfd));
+ bfd_set_error (bfd_error_no_symbols);
+ goto error_return;
}
+ buf = (bfd_byte *) bfd_malloc (lsec->_raw_size);
+ if (buf == NULL && lsec->_raw_size > 0)
+ goto error_return;
+
+ if (! bfd_get_section_contents (abfd, lsec, (PTR) buf, (file_ptr) 0,
+ lsec->_raw_size))
+ goto error_return;
+
/* Remove the sections from this object, so that they do not get
included in the link. */
abfd->sections = NULL;
- symesz = bfd_coff_symesz (abfd);
- esym = (bfd_byte *) obj_coff_external_syms (abfd);
- esym_end = esym + obj_raw_syment_count (abfd) * symesz;
- while (esym < esym_end)
+ xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) buf, &ldhdr);
+
+ strings = (char *) buf + ldhdr.l_stoff;
+
+ elsym = (struct external_ldsym *) (buf + LDHDRSZ);
+ elsymend = elsym + ldhdr.l_nsyms;
+ BFD_ASSERT (sizeof (struct external_ldsym) == LDSYMSZ);
+ for (; elsym < elsymend; elsym++)
{
- struct internal_syment sym;
+ struct internal_ldsym ldsym;
+ char nambuf[SYMNMLEN + 1];
+ const char *name;
+ struct xcoff_link_hash_entry *h;
- bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym);
+ xcoff_swap_ldsym_in (abfd, elsym, &ldsym);
- /* I think that every symbol mentioned in a dynamic object must
- be defined by that object, perhaps by importing it from
- another dynamic object. All we have to do is look up each
- external symbol. If we have already put it in the hash
- table, we simply set a flag indicating that it appears in a
- dynamic object. */
+ /* We are only interested in exported symbols. */
+ if ((ldsym.l_smtype & L_EXPORT) == 0)
+ continue;
- if (sym.n_sclass == C_EXT)
+ if (ldsym._l._l_l._l_zeroes == 0)
+ name = strings + ldsym._l._l_l._l_offset;
+ else
{
- const char *name;
- char buf[SYMNMLEN + 1];
- struct xcoff_link_hash_entry *h;
+ memcpy (nambuf, ldsym._l._l_name, SYMNMLEN);
+ nambuf[SYMNMLEN] = '\0';
+ name = nambuf;
+ }
- name = _bfd_coff_internal_syment_name (abfd, &sym, buf);
- if (name == NULL)
- return false;
+ /* Normally we could not xcoff_link_hash_lookup in an add
+ symbols routine, since we might not be using an XCOFF hash
+ table. However, we verified above that we are using an XCOFF
+ hash table. */
- /* Normally we could not xcoff_link_hash_lookup in an add
- symbols routine, since we might not be using an XCOFF
- hash table. However, we verified above that we are using
- an XCOFF hash table. */
- h = xcoff_link_hash_lookup (xcoff_hash_table (info), name,
- false, false, true);
- if (h != NULL)
- {
- h->flags |= XCOFF_REF_DYNAMIC;
-
- /* If the symbol is undefined, and the current BFD is
- not a dynamic object, change the BFD to this dynamic
- object, so that we can get the correct import file
- ID. */
- if ((h->root.type == bfd_link_hash_undefined
- || h->root.type == bfd_link_hash_undefweak)
- && (h->root.u.undef.abfd == NULL
- || (h->root.u.undef.abfd->flags & DYNAMIC) == 0))
- h->root.u.undef.abfd = abfd;
-
- if (h->smclas == XMC_UA
- && sym.n_numaux > 0)
- {
- union internal_auxent aux;
-
- bfd_coff_swap_aux_in (abfd,
- (PTR) (esym + symesz * sym.n_numaux),
- sym.n_type, sym.n_sclass,
- sym.n_numaux - 1, sym.n_numaux,
- (PTR) &aux);
- h->smclas = aux.x_csect.x_smclas;
- }
- }
+ h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, true,
+ true, true);
+ if (h == NULL)
+ goto error_return;
+
+ h->flags |= XCOFF_DEF_DYNAMIC;
+
+ /* If the symbol is undefined, and the BFD it was found in is
+ not a dynamic object, change the BFD to this dynamic object,
+ so that we can get the correct import file ID. */
+ if ((h->root.type == bfd_link_hash_undefined
+ || h->root.type == bfd_link_hash_undefweak)
+ && (h->root.u.undef.abfd == NULL
+ || (h->root.u.undef.abfd->flags & DYNAMIC) == 0))
+ h->root.u.undef.abfd = abfd;
+
+ if (h->root.type == bfd_link_hash_new)
+ {
+ h->root.type = bfd_link_hash_undefined;
+ h->root.u.undef.abfd = abfd;
+ /* We do not want to add this to the undefined symbol list. */
}
- esym += (sym.n_numaux + 1) * symesz;
+ if (h->smclas == XMC_UA
+ || h->root.type == bfd_link_hash_undefined
+ || h->root.type == bfd_link_hash_undefweak)
+ h->smclas = ldsym.l_smclas;
+
+ /* Unless this is an XMC_XO symbol, we don't bother to actually
+ define it, since we don't have a section to put it in anyhow.
+ Instead, the relocation routines handle the DEF_DYNAMIC flag
+ correctly. */
+
+ if (h->smclas == XMC_XO
+ && (h->root.type == bfd_link_hash_undefined
+ || h->root.type == bfd_link_hash_undefweak))
+ {
+ /* This symbol has an absolute value. */
+ h->root.type = bfd_link_hash_defined;
+ h->root.u.def.section = bfd_abs_section_ptr;
+ h->root.u.def.value = ldsym.l_value;
+ }
+ }
+
+ if (buf != NULL)
+ {
+ free (buf);
+ buf = NULL;
}
/* Record this file in the import files. */
n = ((struct xcoff_import_file *)
bfd_alloc (abfd, sizeof (struct xcoff_import_file)));
if (n == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ goto error_return;
n->next = NULL;
/* For some reason, the path entry in the import file list for a
xcoff_data (abfd)->import_file_id = c;
return true;
+
+ error_return:
+ if (buf != NULL)
+ free (buf);
+ return false;
}
\f
/* Routines that are called after all the input files have been
|| h->root.type == bfd_link_hash_defweak
|| h->root.type == bfd_link_hash_common
|| ((h->flags & XCOFF_CALLED) != 0
- && (h->flags & XCOFF_DEF_REGULAR) == 0
- && ((h->flags & XCOFF_REF_DYNAMIC) != 0
- || info->shared)
&& (h->root.type == bfd_link_hash_undefined
|| h->root.type == bfd_link_hash_undefweak)
- && h->root.root.string[0] == '.'))
+ && h->root.root.string[0] == '.'
+ && h->descriptor != NULL
+ && ((h->descriptor->flags & XCOFF_DEF_DYNAMIC) != 0
+ || info->shared)))
break;
/* Fall through. */
case R_POS:
|| o == xcoff_hash_table (info)->loader_section
|| o == xcoff_hash_table (info)->linkage_section
|| o == xcoff_hash_table (info)->toc_section
+ || o == xcoff_hash_table (info)->descriptor_section
|| strcmp (o->name, ".debug") == 0)
o->flags |= SEC_MARK;
else
n = ((struct xcoff_link_size_list *)
bfd_alloc (output_bfd, sizeof (struct xcoff_link_size_list)));
if (n == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ return false;
n->next = xcoff_hash_table (info)->size_list;
n->h = h;
n->size = size;
if (val != (bfd_vma) -1)
{
- if (h->root.type == bfd_link_hash_defined)
+ if (h->root.type == bfd_link_hash_defined
+ && (! bfd_is_abs_section (h->root.u.def.section)
+ || h->root.u.def.value != val))
{
if (! ((*info->callbacks->multiple_definition)
(info, h->root.root.string, h->root.u.def.section->owner,
h->ldsym = ((struct internal_ldsym *)
bfd_zalloc (output_bfd, sizeof (struct internal_ldsym)));
if (h->ldsym == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ return false;
}
if (imppath == NULL)
n = ((struct xcoff_import_file *)
bfd_alloc (output_bfd, sizeof (struct xcoff_import_file)));
if (n == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ return false;
n->next = NULL;
n->path = imppath;
n->file = impfile;
/* FIXME: I'm not at all sure what syscall is supposed to mean, so
I'm just going to ignore it until somebody explains it. */
+ /* See if this is a function descriptor. It may be one even though
+ it is not so marked. */
+ if ((h->flags & XCOFF_DESCRIPTOR) == 0
+ && h->root.root.string[0] != '.')
+ {
+ char *fnname;
+ struct xcoff_link_hash_entry *hfn;
+
+ fnname = (char *) bfd_malloc (strlen (h->root.root.string) + 2);
+ if (fnname == NULL)
+ return false;
+ fnname[0] = '.';
+ strcpy (fnname + 1, h->root.root.string);
+ hfn = xcoff_link_hash_lookup (xcoff_hash_table (info),
+ fnname, false, false, true);
+ free (fnname);
+ if (hfn != NULL
+ && hfn->smclas == XMC_PR
+ && (hfn->root.type == bfd_link_hash_defined
+ || hfn->root.type == bfd_link_hash_defweak))
+ {
+ h->flags |= XCOFF_DESCRIPTOR;
+ h->descriptor = hfn;
+ hfn->descriptor = h;
+ }
+ }
+
/* Make sure we don't garbage collect this symbol. */
if (! xcoff_mark_symbol (info, h))
return false;
+ /* If this is a function descriptor, make sure we don't garbage
+ collect the associated function code. We normally don't have to
+ worry about this, because the descriptor will be attached to a
+ section with relocs, but if we are creating the descriptor
+ ourselves those relocs will not be visible to the mark code. */
+ if ((h->flags & XCOFF_DESCRIPTOR) != 0)
+ {
+ if (! xcoff_mark_symbol (info, h->descriptor))
+ return false;
+ }
+
return true;
}
bfd *output_bfd;
/* Link information structure. */
struct bfd_link_info *info;
+ /* Whether all defined symbols should be exported. */
+ boolean export_defineds;
/* Number of ldsym structures. */
size_t ldsym_count;
/* Size of string table. */
.loader section before the linker lays out the output file.
LIBPATH is the library path to search for shared objects; this is
normally built from the -L arguments passed to the linker. ENTRY
- is the name of the entry point symbol. */
+ is the name of the entry point symbol (the -e linker option).
+ FILE_ALIGN is the alignment to use for sections within the file
+ (the -H linker option). MAXSTACK is the maximum stack size (the
+ -bmaxstack linker option). MAXDATA is the maximum data size (the
+ -bmaxdata linker option). GC is whether to do garbage collection
+ (the -bgc linker option). MODTYPE is the module type (the
+ -bmodtype linker option). TEXTRO is whether the text section must
+ be read only (the -btextro linker option). EXPORT_DEFINEDS is
+ whether all defined symbols should be exported (the -unix linker
+ option). SPECIAL_SECTIONS is set by this routine to csects with
+ magic names like _end. */
boolean
bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry,
file_align, maxstack, maxdata, gc,
- modtype, textro)
+ modtype, textro, export_defineds,
+ special_sections)
bfd *output_bfd;
struct bfd_link_info *info;
const char *libpath;
boolean gc;
int modtype;
boolean textro;
+ boolean export_defineds;
+ asection **special_sections;
{
struct xcoff_link_hash_entry *hentry;
asection *lsec;
struct xcoff_loader_info ldinfo;
+ int i;
size_t impsize, impcount;
struct xcoff_import_file *fl;
struct internal_ldhdr *ldhdr;
bfd_byte *debug_contents = NULL;
if (! XCOFF_XVECP (output_bfd->xvec))
- return true;
+ {
+ for (i = 0; i < 6; i++)
+ special_sections[i] = NULL;
+ return true;
+ }
ldinfo.failed = false;
ldinfo.output_bfd = output_bfd;
ldinfo.info = info;
+ ldinfo.export_defineds = export_defineds;
ldinfo.ldsym_count = 0;
ldinfo.string_size = 0;
ldinfo.strings = NULL;
xcoff_hash_table (info)->gc = true;
}
+ /* Return special sections to the caller. */
+ for (i = 0; i < 6; i++)
+ {
+ asection *sec;
+
+ sec = xcoff_hash_table (info)->special_sections[i];
+ if (sec != NULL
+ && gc
+ && (sec->flags & SEC_MARK) == 0)
+ sec = NULL;
+ special_sections[i] = sec;
+ }
+
if (info->input_bfds == NULL)
{
/* I'm not sure what to do in this bizarre case. */
lsec->_raw_size = stoff + ldhdr->l_stlen;
lsec->contents = (bfd_byte *) bfd_zalloc (output_bfd, lsec->_raw_size);
if (lsec->contents == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
/* Set up the header. */
xcoff_swap_ldhdr_out (output_bfd, ldhdr,
when the corresponding normal relocs are handled in
xcoff_link_input_bfd. */
- /* Allocate space for the global linkage section and the global toc
- section. */
+ /* Allocate space for the magic sections. */
sec = xcoff_hash_table (info)->linkage_section;
if (sec->_raw_size > 0)
{
sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size);
if (sec->contents == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
}
sec = xcoff_hash_table (info)->toc_section;
if (sec->_raw_size > 0)
{
sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size);
if (sec->contents == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
+ }
+ sec = xcoff_hash_table (info)->descriptor_section;
+ if (sec->_raw_size > 0)
+ {
+ sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size);
+ if (sec->contents == NULL)
+ goto error_return;
}
/* Now that we've done garbage collection, figure out the contents
debug_index = ((unsigned long *)
bfd_zalloc (sub, symcount * sizeof (unsigned long)));
if (debug_index == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
xcoff_data (sub)->debug_indices = debug_index;
/* Grab the contents of the .debug section. We use malloc and
bfd_alloc, because I expect that, when linking many files
together, many of the strings will be the same. Storing the
strings in the hash table should save space in this case. */
- debug_contents = (bfd_byte *) malloc (subdeb->_raw_size);
+ debug_contents = (bfd_byte *) bfd_malloc (subdeb->_raw_size);
if (debug_contents == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
if (! bfd_get_section_contents (sub, subdeb, (PTR) debug_contents,
(file_ptr) 0, subdeb->_raw_size))
goto error_return;
struct xcoff_loader_info *ldinfo = (struct xcoff_loader_info *) p;
size_t len;
+ /* If all defined symbols should be exported, mark them now. */
+ if (ldinfo->export_defineds
+ && (h->flags & XCOFF_DEF_REGULAR) != 0)
+ h->flags |= XCOFF_EXPORT;
+
/* We don't want to garbage collect symbols which are not defined in
XCOFF files. This is a convenient place to mark them. */
if (xcoff_hash_table (ldinfo->info)->gc
!= ldinfo->info->hash->creator)))
h->flags |= XCOFF_MARK;
- /* If this symbol is called, and it is defined in a dynamic object,
- or if we are creating a dynamic object and it is not defined at
- all, then we need to set up global linkage code for it. (Unless
- we did garbage collection and we didn't need this symbol.) */
+ /* If this symbol is called and defined in a dynamic object, or not
+ defined at all when building a shared object, then we need to set
+ up global linkage code for it. (Unless we did garbage collection
+ and we didn't need this symbol.) */
if ((h->flags & XCOFF_CALLED) != 0
- && (h->flags & XCOFF_DEF_REGULAR) == 0
&& (h->root.type == bfd_link_hash_undefined
|| h->root.type == bfd_link_hash_undefweak)
- && ((h->flags & XCOFF_REF_DYNAMIC) != 0
- || ldinfo->info->shared)
&& h->root.root.string[0] == '.'
+ && h->descriptor != NULL
+ && ((h->descriptor->flags & XCOFF_DEF_DYNAMIC) != 0
+ || ldinfo->info->shared)
&& (! xcoff_hash_table (ldinfo->info)->gc
|| (h->flags & XCOFF_MARK) != 0))
{
h->root.u.def.section = sec;
h->root.u.def.value = sec->_raw_size;
h->smclas = XMC_GL;
+ h->flags |= XCOFF_DEF_REGULAR;
sec->_raw_size += XCOFF_GLINK_SIZE;
/* The global linkage code requires a TOC entry for the
hds = h->descriptor;
BFD_ASSERT ((hds->root.type == bfd_link_hash_undefined
|| hds->root.type == bfd_link_hash_undefweak)
- && (hds->flags & XCOFF_DEF_REGULAR) == 0
- && ((hds->flags & XCOFF_REF_DYNAMIC) != 0
- || ldinfo->info->shared));
+ && (hds->flags & XCOFF_DEF_REGULAR) == 0);
hds->flags |= XCOFF_MARK;
if (hds->toc_section == NULL)
{
}
}
+ /* If this symbol is exported, but not defined, we need to try to
+ define it. */
+ if ((h->flags & XCOFF_EXPORT) != 0
+ && (h->flags & XCOFF_IMPORT) == 0
+ && (h->flags & XCOFF_DEF_REGULAR) == 0
+ && (h->flags & XCOFF_DEF_DYNAMIC) == 0
+ && (h->root.type == bfd_link_hash_undefined
+ || h->root.type == bfd_link_hash_undefweak))
+ {
+ if ((h->flags & XCOFF_DESCRIPTOR) != 0
+ && (h->descriptor->root.type == bfd_link_hash_defined
+ || h->descriptor->root.type == bfd_link_hash_defweak))
+ {
+ asection *sec;
+
+ /* This is an undefined function descriptor associated with
+ a defined entry point. We can build up a function
+ descriptor ourselves. Believe it or not, the AIX linker
+ actually does this, and there are cases where we need to
+ do it as well. */
+ sec = xcoff_hash_table (ldinfo->info)->descriptor_section;
+ h->root.type = bfd_link_hash_defined;
+ h->root.u.def.section = sec;
+ h->root.u.def.value = sec->_raw_size;
+ h->smclas = XMC_DS;
+ h->flags |= XCOFF_DEF_REGULAR;
+ sec->_raw_size += 12;
+
+ /* A function descriptor uses two relocs: one for the
+ associated code, and one for the TOC address. */
+ xcoff_hash_table (ldinfo->info)->ldrel_count += 2;
+ sec->reloc_count += 2;
+
+ /* We handle writing out the contents of the descriptor in
+ xcoff_write_global_symbol. */
+ }
+ else
+ {
+ (*_bfd_error_handler)
+ ("attempt to export undefined symbol `%s'",
+ h->root.root.string);
+ ldinfo->failed = true;
+ bfd_set_error (bfd_error_invalid_operation);
+ return false;
+ }
+ }
+
/* If this is still a common symbol, and it wasn't garbage
collected, we need to actually allocate space for it in the .bss
section. */
if (h->ldsym == NULL)
{
ldinfo->failed = true;
- bfd_set_error (bfd_error_no_memory);
return false;
}
}
while (ldinfo->string_size + len + 3 > newalc)
newalc *= 2;
- if (ldinfo->strings == NULL)
- newstrings = (bfd_byte *) malloc (newalc);
- else
- newstrings = ((bfd_byte *)
- realloc ((PTR) ldinfo->strings, newalc));
+ newstrings = ((bfd_byte *)
+ bfd_realloc ((PTR) ldinfo->strings, newalc));
if (newstrings == NULL)
{
ldinfo->failed = true;
- bfd_set_error (bfd_error_no_memory);
return false;
}
ldinfo->string_alc = newalc;
if (finfo.strtab == NULL)
goto error_return;
+ /* Count the line number and relocation entries required for the
+ output file. Determine a few maximum sizes. */
+ max_contents_size = 0;
+ max_lineno_count = 0;
+ max_reloc_count = 0;
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ o->reloc_count = 0;
+ o->lineno_count = 0;
+ for (p = o->link_order_head; p != NULL; p = p->next)
+ {
+ if (p->type == bfd_indirect_link_order)
+ {
+ asection *sec;
+
+ sec = p->u.indirect.section;
+
+ if (info->strip == strip_none
+ || info->strip == strip_some)
+ o->lineno_count += sec->lineno_count;
+
+ o->reloc_count += sec->reloc_count;
+
+ if (sec->_raw_size > max_contents_size)
+ max_contents_size = sec->_raw_size;
+ if (sec->lineno_count > max_lineno_count)
+ max_lineno_count = sec->lineno_count;
+ if (coff_section_data (sec->owner, sec) != NULL
+ && xcoff_section_data (sec->owner, sec) != NULL
+ && (xcoff_section_data (sec->owner, sec)->lineno_count
+ > max_lineno_count))
+ max_lineno_count =
+ xcoff_section_data (sec->owner, sec)->lineno_count;
+ if (sec->reloc_count > max_reloc_count)
+ max_reloc_count = sec->reloc_count;
+ }
+ else if (p->type == bfd_section_reloc_link_order
+ || p->type == bfd_symbol_reloc_link_order)
+ ++o->reloc_count;
+ }
+ }
+
/* Compute the file positions for all the sections. */
if (abfd->output_has_begun)
{
sofar = bfd_coff_filhsz (abfd);
sofar += bfd_coff_aoutsz (abfd);
sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
+ for (o = abfd->sections; o != NULL; o = o->next)
+ if (o->reloc_count >= 0xffff || o->lineno_count >= 0xffff)
+ sofar += bfd_coff_scnhsz (abfd);
for (o = abfd->sections; o != NULL; o = o->next)
{
bfd_coff_compute_section_file_positions (abfd);
}
- /* Count the line numbers and relocation entries required for the
- output file. Set the file positions for the relocs. */
- rel_filepos = obj_relocbase (abfd);
- relsz = bfd_coff_relsz (abfd);
- max_contents_size = 0;
- max_lineno_count = 0;
- max_reloc_count = 0;
- for (o = abfd->sections; o != NULL; o = o->next)
- {
- o->reloc_count = 0;
- o->lineno_count = 0;
- for (p = o->link_order_head; p != NULL; p = p->next)
- {
- if (p->type == bfd_indirect_link_order)
- {
- asection *sec;
-
- sec = p->u.indirect.section;
-
- if (info->strip == strip_none
- || info->strip == strip_some)
- o->lineno_count += sec->lineno_count;
-
- o->reloc_count += sec->reloc_count;
-
- if (sec->_raw_size > max_contents_size)
- max_contents_size = sec->_raw_size;
- if (sec->lineno_count > max_lineno_count)
- max_lineno_count = sec->lineno_count;
- if (coff_section_data (sec->owner, sec) != NULL
- && xcoff_section_data (sec->owner, sec) != NULL
- && (xcoff_section_data (sec->owner, sec)->lineno_count
- > max_lineno_count))
- max_lineno_count =
- xcoff_section_data (sec->owner, sec)->lineno_count;
- if (sec->reloc_count > max_reloc_count)
- max_reloc_count = sec->reloc_count;
- }
- else if (p->type == bfd_section_reloc_link_order
- || p->type == bfd_symbol_reloc_link_order)
- ++o->reloc_count;
- }
- if (o->reloc_count == 0)
- o->rel_filepos = 0;
- else
- {
- o->flags |= SEC_RELOC;
- o->rel_filepos = rel_filepos;
- rel_filepos += o->reloc_count * relsz;
- }
- }
-
/* Allocate space for the pointers we need to keep for the relocs. */
{
unsigned int i;
/* We use section_count + 1, rather than section_count, because
the target_index fields are 1 based. */
- finfo.section_info = ((struct xcoff_link_section_info *)
- malloc ((abfd->section_count + 1)
- * sizeof (struct xcoff_link_section_info)));
+ finfo.section_info =
+ ((struct xcoff_link_section_info *)
+ bfd_malloc ((abfd->section_count + 1)
+ * sizeof (struct xcoff_link_section_info)));
if (finfo.section_info == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
for (i = 0; i <= abfd->section_count; i++)
{
finfo.section_info[i].relocs = NULL;
}
}
- /* We now know the size of the relocs, so we can determine the file
- positions of the line numbers. */
- line_filepos = rel_filepos;
- finfo.line_filepos = line_filepos;
- linesz = bfd_coff_linesz (abfd);
+ /* Set the file positions for the relocs. */
+ rel_filepos = obj_relocbase (abfd);
+ relsz = bfd_coff_relsz (abfd);
max_output_reloc_count = 0;
for (o = abfd->sections; o != NULL; o = o->next)
{
- if (o->lineno_count == 0)
- o->line_filepos = 0;
+ if (o->reloc_count == 0)
+ o->rel_filepos = 0;
else
{
- o->line_filepos = line_filepos;
- line_filepos += o->lineno_count * linesz;
- }
+ o->flags |= SEC_RELOC;
+ o->rel_filepos = rel_filepos;
+ rel_filepos += o->reloc_count * relsz;
- if (o->reloc_count != 0)
- {
/* We don't know the indices of global symbols until we have
written out all the local symbols. For each section in
the output file, we keep an array of pointers to hash
would be slow. */
finfo.section_info[o->target_index].relocs =
((struct internal_reloc *)
- malloc (o->reloc_count * sizeof (struct internal_reloc)));
+ bfd_malloc (o->reloc_count * sizeof (struct internal_reloc)));
finfo.section_info[o->target_index].rel_hashes =
((struct xcoff_link_hash_entry **)
- malloc (o->reloc_count
+ bfd_malloc (o->reloc_count
* sizeof (struct xcoff_link_hash_entry *)));
if (finfo.section_info[o->target_index].relocs == NULL
|| finfo.section_info[o->target_index].rel_hashes == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
if (o->reloc_count > max_output_reloc_count)
max_output_reloc_count = o->reloc_count;
}
+ }
+
+ /* We now know the size of the relocs, so we can determine the file
+ positions of the line numbers. */
+ line_filepos = rel_filepos;
+ finfo.line_filepos = line_filepos;
+ linesz = bfd_coff_linesz (abfd);
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ if (o->lineno_count == 0)
+ o->line_filepos = 0;
+ else
+ {
+ o->line_filepos = line_filepos;
+ line_filepos += o->lineno_count * linesz;
+ }
/* Reset the reloc and lineno counts, so that we can use them to
count the number of entries we have output so far. */
/* Allocate some buffers used while linking. */
finfo.internal_syms = ((struct internal_syment *)
- malloc (max_sym_count
- * sizeof (struct internal_syment)));
- finfo.sym_indices = (long *) malloc (max_sym_count * sizeof (long));
+ bfd_malloc (max_sym_count
+ * sizeof (struct internal_syment)));
+ finfo.sym_indices = (long *) bfd_malloc (max_sym_count * sizeof (long));
finfo.outsyms = ((bfd_byte *)
- malloc ((size_t) ((max_sym_count + 1) * symesz)));
- finfo.linenos = (bfd_byte *) malloc (max_lineno_count
- * bfd_coff_linesz (abfd));
- finfo.contents = (bfd_byte *) malloc (max_contents_size);
- finfo.external_relocs = (bfd_byte *) malloc (max_reloc_count * relsz);
+ bfd_malloc ((size_t) ((max_sym_count + 1) * symesz)));
+ finfo.linenos = (bfd_byte *) bfd_malloc (max_lineno_count
+ * bfd_coff_linesz (abfd));
+ finfo.contents = (bfd_byte *) bfd_malloc (max_contents_size);
+ finfo.external_relocs = (bfd_byte *) bfd_malloc (max_reloc_count * relsz);
if ((finfo.internal_syms == NULL && max_sym_count > 0)
|| (finfo.sym_indices == NULL && max_sym_count > 0)
|| finfo.outsyms == NULL
|| (finfo.linenos == NULL && max_lineno_count > 0)
|| (finfo.contents == NULL && max_contents_size > 0)
|| (finfo.external_relocs == NULL && max_reloc_count > 0))
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ goto error_return;
obj_raw_syment_count (abfd) = 0;
xcoff_data (abfd)->toc = (bfd_vma) -1;
o->_raw_size))
goto error_return;
- /* Write out the global linkage section and the toc section. */
+ /* Write out the magic sections. */
o = xcoff_hash_table (info)->linkage_section;
if (o->_raw_size > 0
&& ! bfd_set_section_contents (abfd, o->output_section, o->contents,
o->output_offset, o->_raw_size))
goto error_return;
o = xcoff_hash_table (info)->toc_section;
+ if (o->_raw_size > 0
+ && ! bfd_set_section_contents (abfd, o->output_section, o->contents,
+ o->output_offset, o->_raw_size))
+ goto error_return;
+ o = xcoff_hash_table (info)->descriptor_section;
if (o->_raw_size > 0
&& ! bfd_set_section_contents (abfd, o->output_section, o->contents,
o->output_offset, o->_raw_size))
ldsym->l_smtype = smtyp;
if (((h->flags & XCOFF_DEF_REGULAR) == 0
- && (h->flags & XCOFF_REF_DYNAMIC) != 0)
+ && (h->flags & XCOFF_DEF_DYNAMIC) != 0)
|| (h->flags & XCOFF_IMPORT) != 0)
ldsym->l_smtype |= L_IMPORT;
if (((h->flags & XCOFF_DEF_REGULAR) != 0
- && (h->flags & XCOFF_REF_DYNAMIC) != 0)
+ && (h->flags & XCOFF_DEF_DYNAMIC) != 0)
|| (h->flags & XCOFF_EXPORT) != 0)
ldsym->l_smtype |= L_EXPORT;
if ((h->flags & XCOFF_ENTRY) != 0)
skip = true;
else
{
+ bfd_vma tocval, tocend;
+
+ tocval = ((*csectpp)->output_section->vma
+ + (*csectpp)->output_offset
+ + isym.n_value
+ - (*csectpp)->vma);
+ /* We want to find out if tocval is a good value to use
+ as the TOC anchor--that is, whether we can access all
+ of the TOC using a 16 bit offset from tocval. This
+ test assumes that the TOC comes at the end of the
+ output section, as it does in the default linker
+ script. If the TOC anchor is too far into the .toc
+ section, the relocation routine will report
+ overflows. */
+ tocend = ((*csectpp)->output_section->vma
+ + (*csectpp)->output_section->_raw_size);
+ if (tocval + 0x8000 < tocend)
+ {
+ bfd_vma tocadd;
+
+ tocadd = tocend - (tocval + 0x8000);
+ tocval += tocadd;
+ isym.n_value += tocadd;
+ }
+
finfo->toc_symindx = output_index;
- xcoff_data (finfo->output_bfd)->toc =
- ((*csectpp)->output_section->vma
- + (*csectpp)->output_offset
- + isym.n_value
- - (*csectpp)->vma);
+ xcoff_data (finfo->output_bfd)->toc = tocval;
xcoff_data (finfo->output_bfd)->toc_section =
(*csectpp)->output_section;
require = true;
bfd_alloc (finfo->output_bfd,
sizeof (struct xcoff_toc_rel_hash)));
if (n == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ return false;
si = finfo->section_info + target_index;
n->next = si->toc_rel_hashes;
n->h = h;
abort ();
if (((h->flags & XCOFF_DEF_REGULAR) == 0
- && (h->flags & XCOFF_REF_DYNAMIC) != 0)
+ && (h->flags & XCOFF_DEF_DYNAMIC) != 0)
|| (h->flags & XCOFF_IMPORT) != 0)
ldsym->l_smtype |= L_IMPORT;
if (((h->flags & XCOFF_DEF_REGULAR) != 0
- && (h->flags & XCOFF_REF_DYNAMIC) != 0)
+ && (h->flags & XCOFF_DEF_DYNAMIC) != 0)
|| (h->flags & XCOFF_EXPORT) != 0)
ldsym->l_smtype |= L_EXPORT;
if ((h->flags & XCOFF_ENTRY) != 0)
- xcoff_data (output_bfd)->toc);
if ((h->descriptor->flags & XCOFF_SET_TOC) != 0)
tocoff += h->descriptor->u.toc_offset;
- bfd_put_32 (output_bfd, XCOFF_GLINK_FIRST | tocoff, p);
+ bfd_put_32 (output_bfd, XCOFF_GLINK_FIRST | (tocoff & 0xffff), p);
for (i = 0, p += 4;
i < sizeof xcoff_glink_code / sizeof xcoff_glink_code[0];
i++, p += 4)
++finfo->ldrel;
}
+ /* If this symbol is a specially defined function descriptor, write
+ it out. The first word is the address of the function code
+ itself, the second word is the address of the TOC, and the third
+ word is zero. */
+ if ((h->flags & XCOFF_DESCRIPTOR) != 0
+ && h->root.type == bfd_link_hash_defined
+ && (h->root.u.def.section
+ == xcoff_hash_table (finfo->info)->descriptor_section))
+ {
+ asection *sec;
+ asection *osec;
+ int oindx;
+ bfd_byte *p;
+ struct xcoff_link_hash_entry *hentry;
+ asection *esec;
+ struct internal_reloc *irel;
+ struct internal_ldrel ldrel;
+ asection *tsec;
+
+ sec = h->root.u.def.section;
+ osec = sec->output_section;
+ oindx = osec->target_index;
+ p = sec->contents + h->root.u.def.value;
+
+ hentry = h->descriptor;
+ BFD_ASSERT (hentry != NULL
+ && (hentry->root.type == bfd_link_hash_defined
+ || hentry->root.type == bfd_link_hash_defweak));
+ esec = hentry->root.u.def.section;
+ bfd_put_32 (output_bfd,
+ (esec->output_section->vma
+ + esec->output_offset
+ + hentry->root.u.def.value),
+ p);
+
+ irel = finfo->section_info[oindx].relocs + osec->reloc_count;
+ irel->r_vaddr = (osec->vma
+ + sec->output_offset
+ + h->root.u.def.value);
+ irel->r_symndx = esec->output_section->target_index;
+ irel->r_type = R_POS;
+ irel->r_size = 31;
+ finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL;
+ ++osec->reloc_count;
+
+ ldrel.l_vaddr = irel->r_vaddr;
+ if (strcmp (esec->output_section->name, ".text") == 0)
+ ldrel.l_symndx = 0;
+ else if (strcmp (esec->output_section->name, ".data") == 0)
+ ldrel.l_symndx = 1;
+ else if (strcmp (esec->output_section->name, ".bss") == 0)
+ ldrel.l_symndx = 2;
+ else
+ {
+ (*_bfd_error_handler)
+ ("%s: loader reloc in unrecognized section `%s'",
+ bfd_get_filename (output_bfd),
+ esec->output_section->name);
+ bfd_set_error (bfd_error_nonrepresentable_section);
+ return false;
+ }
+ ldrel.l_rtype = (31 << 8) | R_POS;
+ ldrel.l_rsecnm = oindx;
+ xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel);
+ ++finfo->ldrel;
+
+ bfd_put_32 (output_bfd, xcoff_data (output_bfd)->toc, p + 4);
+
+ tsec = xcoff_data (output_bfd)->toc_section;
+
+ ++irel;
+ irel->r_vaddr = (osec->vma
+ + sec->output_offset
+ + h->root.u.def.value
+ + 4);
+ irel->r_symndx = tsec->output_section->target_index;
+ irel->r_type = R_POS;
+ irel->r_size = 31;
+ finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL;
+ ++osec->reloc_count;
+
+ ldrel.l_vaddr = irel->r_vaddr;
+ if (strcmp (tsec->output_section->name, ".text") == 0)
+ ldrel.l_symndx = 0;
+ else if (strcmp (tsec->output_section->name, ".data") == 0)
+ ldrel.l_symndx = 1;
+ else if (strcmp (tsec->output_section->name, ".bss") == 0)
+ ldrel.l_symndx = 2;
+ else
+ {
+ (*_bfd_error_handler)
+ ("%s: loader reloc in unrecognized section `%s'",
+ bfd_get_filename (output_bfd),
+ tsec->output_section->name);
+ bfd_set_error (bfd_error_nonrepresentable_section);
+ return false;
+ }
+ ldrel.l_rtype = (31 << 8) | R_POS;
+ ldrel.l_rsecnm = oindx;
+ xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel);
+ ++finfo->ldrel;
+ }
+
if (h->indx >= 0)
return true;
size = bfd_get_reloc_size (howto);
buf = (bfd_byte *) bfd_zmalloc (size);
if (buf == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ return false;
rstat = _bfd_relocate_contents (howto, output_bfd, addend, buf);
switch (rstat)
else
{
sec = sections[symndx];
- val = (sec->output_section->vma
- + sec->output_offset
- + sym->n_value
- - sec->vma);
+ /* Hack to make sure we use the right TOC anchor value
+ if this reloc is against the TOC anchor. */
+ if (sec->name[3] == '0'
+ && strcmp (sec->name, ".tc0") == 0)
+ val = xcoff_data (output_bfd)->toc;
+ else
+ val = (sec->output_section->vma
+ + sec->output_offset
+ + sym->n_value
+ - sec->vma);
}
}
else
val = (sec->output_section->vma
+ sec->output_offset);
}
- else if ((h->flags & XCOFF_REF_DYNAMIC) != 0
+ else if ((h->flags & XCOFF_DEF_DYNAMIC) != 0
|| (h->flags & XCOFF_IMPORT) != 0)
{
/* Every symbol in a shared object is defined somewhere. */
projects / binutils-gdb.git / blobdiff