diff options
| -rw-r--r-- | bfd/linker.c | 125 |
1 files changed, 93 insertions, 32 deletions
diff --git a/bfd/linker.c b/bfd/linker.c index 1c4b8fe..0d7e47a 100644 --- a/bfd/linker.c +++ b/bfd/linker.c @@ -1121,27 +1121,27 @@ generic_link_check_archive_element (abfd, info, pneeded, collect) attached to symbfd to ensure that it is in a BFD which will be linked in. */ h->type = bfd_link_hash_common; + h->u.c.p = + ((struct bfd_link_hash_common_entry *) + bfd_hash_allocate (&info->hash->table, + sizeof (struct bfd_link_hash_common_entry))); + if (h->u.c.p == NULL) + return false; size = bfd_asymbol_value (p); h->u.c.size = size; - if (h->u.c.size != size) - { - /* The size did not fit in the bitfield. */ - bfd_set_error (bfd_error_bad_value); - return false; - } power = bfd_log2 (size); if (power > 4) power = 4; - h->u.c.alignment_power = power; + h->u.c.p->alignment_power = power; if (p->section == bfd_com_section_ptr) - h->u.c.section = bfd_make_section_old_way (symbfd, "COMMON"); + h->u.c.p->section = bfd_make_section_old_way (symbfd, "COMMON"); else - h->u.c.section = bfd_make_section_old_way (symbfd, - p->section->name); - h->u.c.section->flags = SEC_ALLOC; + h->u.c.p->section = bfd_make_section_old_way (symbfd, + p->section->name); + h->u.c.p->section->flags = SEC_ALLOC; } else { @@ -1217,6 +1217,17 @@ generic_link_add_symbol_list (abfd, info, symbol_count, symbols, collect) (struct bfd_link_hash_entry **) &h))) return false; + /* If this is a constructor symbol, and the linker didn't do + anything with it, then we want to just pass the symbol + through to the output file. This will happen when + linking with -r. */ + if ((p->flags & BSF_CONSTRUCTOR) != 0 + && (h == NULL || h->root.type == bfd_link_hash_new)) + { + p->udata.p = NULL; + continue; + } + /* Save the BFD symbol so that we don't lose any backend specific information that may be attached to it. We only want this one if it gives more information than the @@ -1311,7 +1322,7 @@ static const enum link_action link_action[8][8] = { /* current\prev new undef undefw def defw com indr warn */ /* UNDEF_ROW */ {UND, NOACT, NOACT, REF, REF, NOACT, REFC, WARNC }, - /* UNDEFW_ROW */ {WEAK, WEAK, NOACT, REF, REF, NOACT, REFC, WARNC }, + /* UNDEFW_ROW */ {WEAK, NOACT, NOACT, REF, REF, NOACT, REFC, WARNC }, /* DEF_ROW */ {DEF, DEF, DEF, MDEF, DEF, CDEF, MDEF, CYCLE }, /* DEFW_ROW */ {DEFW, DEFW, DEFW, NOACT, NOACT, NOACT, NOACT, CYCLE }, /* COMMON_ROW */ {COM, COM, COM, CREF, CREF, BIG, CREF, WARNC }, @@ -1461,7 +1472,7 @@ _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, value, BFD_ASSERT (h->type == bfd_link_hash_common); if (! ((*info->callbacks->multiple_common) (info, name, - h->u.c.section->owner, bfd_link_hash_common, h->u.c.size, + h->u.c.p->section->owner, bfd_link_hash_common, h->u.c.size, abfd, bfd_link_hash_defined, (bfd_vma) 0))) return false; /* Fall through. */ @@ -1537,13 +1548,14 @@ _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, value, if (h->type == bfd_link_hash_new) bfd_link_add_undef (info->hash, h); h->type = bfd_link_hash_common; + h->u.c.p = + ((struct bfd_link_hash_common_entry *) + bfd_hash_allocate (&info->hash->table, + sizeof (struct bfd_link_hash_common_entry))); + if (h->u.c.p == NULL) + return false; + h->u.c.size = value; - if (h->u.c.size != value) - { - /* The size did not fit in the bitfield. */ - bfd_set_error (bfd_error_bad_value); - return false; - } /* Select a default alignment based on the size. This may be overridden by the caller. */ @@ -1553,7 +1565,7 @@ _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, value, power = bfd_log2 (value); if (power > 4) power = 4; - h->u.c.alignment_power = power; + h->u.c.p->alignment_power = power; } /* The section of a common symbol is only used if the common @@ -1568,16 +1580,17 @@ _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, value, handling. */ if (section == bfd_com_section_ptr) { - h->u.c.section = bfd_make_section_old_way (abfd, "COMMON"); - h->u.c.section->flags = SEC_ALLOC; + h->u.c.p->section = bfd_make_section_old_way (abfd, "COMMON"); + h->u.c.p->section->flags = SEC_ALLOC; } else if (section->owner != abfd) { - h->u.c.section = bfd_make_section_old_way (abfd, section->name); - h->u.c.section->flags = SEC_ALLOC; + h->u.c.p->section = bfd_make_section_old_way (abfd, + section->name); + h->u.c.p->section->flags = SEC_ALLOC; } else - h->u.c.section = section; + h->u.c.p->section = section; break; case REF: @@ -1593,7 +1606,7 @@ _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, value, BFD_ASSERT (h->type == bfd_link_hash_common); if (! ((*info->callbacks->multiple_common) (info, name, - h->u.c.section->owner, bfd_link_hash_common, h->u.c.size, + h->u.c.p->section->owner, bfd_link_hash_common, h->u.c.size, abfd, bfd_link_hash_common, value))) return false; if (value > h->u.c.size) @@ -1607,7 +1620,7 @@ _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, value, power = bfd_log2 (value); if (power > 4) power = 4; - h->u.c.alignment_power = power; + h->u.c.p->alignment_power = power; } break; @@ -1677,7 +1690,7 @@ _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, value, BFD_ASSERT (h->type == bfd_link_hash_common); if (! ((*info->callbacks->multiple_common) (info, name, - h->u.c.section->owner, bfd_link_hash_common, h->u.c.size, + h->u.c.p->section->owner, bfd_link_hash_common, h->u.c.size, abfd, bfd_link_hash_indirect, (bfd_vma) 0))) return false; /* Fall through. */ @@ -2029,9 +2042,25 @@ _bfd_generic_link_output_symbols (output_bfd, input_bfd, info, psymalloc) || bfd_is_com_section (bfd_get_section (sym)) || bfd_is_ind_section (bfd_get_section (sym))) { - h = _bfd_generic_link_hash_lookup (_bfd_generic_hash_table (info), - bfd_asymbol_name (sym), - false, false, true); + if (sym->udata.p != NULL) + h = (struct generic_link_hash_entry *) sym->udata.p; + else if ((sym->flags & BSF_CONSTRUCTOR) != 0) + { + /* This case normally means that the main linker code + deliberately ignored this constructor symbol. We + should just pass it through. This will screw up if + the constructor symbol is from a different, + non-generic, object file format, but the case will + only arise when linking with -r, which will probably + fail anyhow, since there will be no way to represent + the relocs in the output format being used. */ + h = NULL; + } + else + h = _bfd_generic_link_hash_lookup (_bfd_generic_hash_table (info), + bfd_asymbol_name (sym), + false, false, true); + if (h != (struct generic_link_hash_entry *) NULL) { /* Force all references to this symbol to point to @@ -2055,13 +2084,18 @@ _bfd_generic_link_output_symbols (output_bfd, input_bfd, info, psymalloc) case bfd_link_hash_undefweak: sym->flags |= BSF_WEAK; break; + case bfd_link_hash_indirect: + h = (struct generic_link_hash_entry *) h->root.u.i.link; + /* fall through */ case bfd_link_hash_defined: sym->flags |= BSF_GLOBAL; + sym->flags &=~ BSF_CONSTRUCTOR; sym->value = h->root.u.def.value; sym->section = h->root.u.def.section; break; case bfd_link_hash_defweak: sym->flags |= BSF_WEAK; + sym->flags &=~ BSF_CONSTRUCTOR; sym->value = h->root.u.def.value; sym->section = h->root.u.def.section; break; @@ -2074,7 +2108,7 @@ _bfd_generic_link_output_symbols (output_bfd, input_bfd, info, psymalloc) sym->section = bfd_com_section_ptr; } /* We do not set the section of the symbol to - h->root.u.c.section. That value was saved so + h->root.u.c.p->section. That value was saved so that we would know where to allocate the symbol if it was defined. In this case the type is still bfd_link_hash_common, so we did not define @@ -2612,3 +2646,30 @@ _bfd_count_link_order_relocs (link_order) return c; } + +/* +FUNCTION + bfd_link_split_section + +SYNOPSIS + boolean bfd_link_split_section(bfd *abfd, asection *sec); + +DESCRIPTION + Return nonzero if @var{sec} should be split during a + reloceatable or final link. + +.#define bfd_link_split_section(abfd, sec) \ +. BFD_SEND (abfd, _bfd_link_split_section, (abfd, sec)) +. + +*/ + + + +boolean +_bfd_generic_link_split_section (abfd, sec) + bfd *abfd; + asection *sec; +{ + return false; +} |