diff options
author | Ian Lance Taylor <ian@airs.com> | 1994-01-06 20:02:49 +0000 |
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committer | Ian Lance Taylor <ian@airs.com> | 1994-01-06 20:02:49 +0000 |
commit | e68de5d56ad99310e2fedc6959e121055533d563 (patch) | |
tree | b28cd123b42dcda06d4b8ab4ff15351d58e0b825 /bfd | |
parent | 6e07e54f1b347f885cc6c021c3fd912c79bdaf55 (diff) | |
download | gdb-e68de5d56ad99310e2fedc6959e121055533d563.zip gdb-e68de5d56ad99310e2fedc6959e121055533d563.tar.gz gdb-e68de5d56ad99310e2fedc6959e121055533d563.tar.bz2 |
* aoutx.h (NAME(aout,final_link)): Don't abort when trying to link
a non a.out file, just pass it to _bfd_default_link_order.
(aout_link_input_section_std): When doing a final PC relative link
against a section symbol, subtract the VMA of the input section.
(aout_link_input_section_ext): Likewise.
Diffstat (limited to 'bfd')
-rw-r--r-- | bfd/aoutx.h | 121 |
1 files changed, 80 insertions, 41 deletions
diff --git a/bfd/aoutx.h b/bfd/aoutx.h index 8e05efe..1d0fa1b 100644 --- a/bfd/aoutx.h +++ b/bfd/aoutx.h @@ -383,6 +383,8 @@ DEFUN(NAME(aout,some_aout_object_p),(abfd, execp, callback_to_real_object_p), /* Setting of EXEC_P has been deferred to the bottom of this function */ if (execp->a_syms) abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; + if (N_DYNAMIC(*execp)) + abfd->flags |= DYNAMIC; if (N_MAGIC (*execp) == ZMAGIC) { @@ -3102,8 +3104,8 @@ aout_link_add_symbols (abfd, info) } if (! (_bfd_generic_link_add_one_symbol - (info, abfd, name, flags, section, value, string, copy, - (struct bfd_link_hash_entry **) sym_hash))) + (info, abfd, name, flags, section, value, string, copy, false, + ARCH_SIZE, (struct bfd_link_hash_entry **) sym_hash))) return false; } @@ -3255,8 +3257,6 @@ NAME(aout,final_link) (abfd, info, callback) for (o = abfd->sections; o != (asection *) NULL; o = o->next) { - bfd *input_bfd; - for (p = o->link_order_head; p != (struct bfd_link_order *) NULL; p = p->next) @@ -3268,26 +3268,22 @@ NAME(aout,final_link) (abfd, info, callback) (void) alloca (0); #endif #endif - switch (p->type) + if (p->type == bfd_indirect_link_order + && (bfd_get_flavour (p->u.indirect.section->owner) + == bfd_target_aout_flavour)) { - case bfd_indirect_link_order: + bfd *input_bfd; + input_bfd = p->u.indirect.section->owner; - if (bfd_get_flavour (input_bfd) == bfd_target_aout_flavour) - { - if (! input_bfd->output_has_begun) - { - if (! aout_link_input_bfd (&aout_info, input_bfd)) - return false; - input_bfd->output_has_begun = true; - } - } - else + if (! input_bfd->output_has_begun) { - /* FIXME. */ - abort (); + if (! aout_link_input_bfd (&aout_info, input_bfd)) + return false; + input_bfd->output_has_begun = true; } - break; - default: + } + else + { if (! _bfd_default_link_order (abfd, info, o, p)) return false; } @@ -3982,14 +3978,12 @@ aout_link_input_section_std (finfo, input_bfd, input_section, relocs, rel->r_address); /* Adjust a PC relative relocation by removing the reference - to the original address in the section and then including - the reference to the new address. */ + to the original address in the section and including the + reference to the new address. */ if (r_pcrel) - { - relocation += input_section->vma; - relocation -= (input_section->output_section->vma - + input_section->output_offset); - } + relocation -= (input_section->output_section->vma + + input_section->output_offset + - input_section->vma); if (relocation == 0) r = bfd_reloc_ok; @@ -4034,9 +4028,10 @@ aout_link_input_section_std (finfo, input_bfd, input_section, relocs, relocation = (section->output_section->vma + section->output_offset - section->vma); + if (r_pcrel) + relocation += input_section->vma; } - r = _bfd_final_link_relocate (howto_table_std + howto_idx, input_bfd, input_section, contents, r_addr, relocation, @@ -4130,6 +4125,9 @@ aout_link_input_section_ext (finfo, input_bfd, input_section, relocs, r_addend = GET_SWORD (input_bfd, rel->r_addend); + BFD_ASSERT (r_type >= 0 + && r_type < TABLE_SIZE (howto_table_ext)); + if (relocateable) { /* We are generating a relocateable output file, and must @@ -4169,6 +4167,14 @@ aout_link_input_section_ext (finfo, input_bfd, input_section, relocs, relocation = (h->root.u.def.value + output_section->vma + h->root.u.def.section->output_offset); + + /* Now RELOCATION is the VMA of the final + destination. If this is a PC relative reloc, + then ADDEND is the negative of the source VMA. + We want to set ADDEND to the difference between + the destination VMA and the source VMA, which + means we must adjust RELOCATION by the change in + the source VMA. This is done below. */ } else { @@ -4190,6 +4196,11 @@ aout_link_input_section_ext (finfo, input_bfd, input_section, relocs, } relocation = 0; + + /* If this is a PC relative reloc, then the addend + is the negative of the source VMA. We must + adjust it by the change in the source VMA. This + is done below. */ } /* Write out the new r_index value. */ @@ -4216,19 +4227,21 @@ aout_link_input_section_ext (finfo, input_bfd, input_section, relocs, relocation = (section->output_section->vma + section->output_offset - section->vma); - } - /* Adjust a PC relative relocation by removing the reference - to the original address in the section and then including - the reference to the new address. */ - if (howto_table_ext[r_type].pc_relative - && ! howto_table_ext[r_type].pcrel_offset) - { - relocation += input_section->vma; - relocation -= (input_section->output_section->vma - + input_section->output_offset); + /* If this is a PC relative reloc, then the addend is + the difference in VMA between the destination and the + source. We have just adjusted for the change in VMA + of the destination, so we must also adjust by the + change in VMA of the source. This is done below. */ } + /* As described above, we must always adjust a PC relative + reloc by the change in VMA of the source. */ + if (howto_table_ext[r_type].pc_relative) + relocation -= (input_section->output_section->vma + + input_section->output_offset + - input_section->vma); + /* Change the addend if necessary. */ if (relocation != 0) PUT_WORD (output_bfd, r_addend + relocation, rel->r_addend); @@ -4273,14 +4286,40 @@ aout_link_input_section_ext (finfo, input_bfd, input_section, relocs, asection *section; section = aout_reloc_index_to_section (input_bfd, r_index); + + /* If this is a PC relative reloc, then R_ADDEND is the + difference between the two vmas, or + old_dest_sec + old_dest_off - (old_src_sec + old_src_off) + where + old_dest_sec == section->vma + and + old_src_sec == input_section->vma + and + old_src_off == r_addr + + _bfd_final_link_relocate expects RELOCATION + + R_ADDEND to be the VMA of the destination minus + r_addr (the minus r_addr is because this relocation + is not pcrel_offset, which is a bit confusing and + should, perhaps, be changed), or + new_dest_sec + where + new_dest_sec == output_section->vma + output_offset + We arrange for this to happen by setting RELOCATION to + new_dest_sec + old_src_sec - old_dest_sec + + If this is not a PC relative reloc, then R_ADDEND is + simply the VMA of the destination, so we set + RELOCATION to the change in the destination VMA, or + new_dest_sec - old_dest_sec + */ relocation = (section->output_section->vma + section->output_offset - section->vma); + if (howto_table_ext[r_type].pc_relative) + relocation += input_section->vma; } - BFD_ASSERT (r_type >= 0 - && r_type < TABLE_SIZE (howto_table_ext)); - r = _bfd_final_link_relocate (howto_table_ext + r_type, input_bfd, input_section, contents, r_addr, relocation, |