diff options
| -rw-r--r-- | bfd/ChangeLog | 4 | ||||
| -rw-r--r-- | bfd/coff64-rs6000.c | 378 |
2 files changed, 194 insertions, 188 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 95dcc57..9c301d0 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,5 +1,9 @@ 2021-03-12 Clément Chigot <clement.chigot@atos.net> + * coff64-rs6000.c (xcoff64_ppc_relocate_section): Move. + +2021-03-12 Clément Chigot <clement.chigot@atos.net> + * coff64-rs6000.c (xcoff64_write_object_contents): Remove. * coffcode.h (coff_write_object_contents): Add bfd_mach_ppc_620 support for o_cputype field. Avoid creating an empty a.out header diff --git a/bfd/coff64-rs6000.c b/bfd/coff64-rs6000.c index a31a6fb..3f74130 100644 --- a/bfd/coff64-rs6000.c +++ b/bfd/coff64-rs6000.c @@ -814,194 +814,6 @@ xcoff64_reloc_type_br (bfd *input_bfd, return TRUE; } -/* This is the relocation function for the PowerPC64. - See xcoff_ppc_relocation_section for more information. */ - -bfd_boolean -xcoff64_ppc_relocate_section (bfd *output_bfd, - struct bfd_link_info *info, - bfd *input_bfd, - asection *input_section, - bfd_byte *contents, - struct internal_reloc *relocs, - struct internal_syment *syms, - asection **sections) -{ - struct internal_reloc *rel; - struct internal_reloc *relend; - - rel = relocs; - relend = rel + input_section->reloc_count; - for (; rel < relend; rel++) - { - long symndx; - struct xcoff_link_hash_entry *h; - struct internal_syment *sym; - bfd_vma addend; - bfd_vma val; - struct reloc_howto_struct howto; - bfd_vma relocation; - bfd_vma value_to_relocate; - bfd_vma address; - bfd_byte *location; - - /* Relocation type R_REF is a special relocation type which is - merely used to prevent garbage collection from occurring for - the csect including the symbol which it references. */ - if (rel->r_type == R_REF) - continue; - - /* howto */ - howto.type = rel->r_type; - howto.rightshift = 0; - howto.bitsize = (rel->r_size & 0x3f) + 1; - howto.size = howto.bitsize > 16 ? (howto.bitsize > 32 ? 4 : 2) : 1; - howto.pc_relative = FALSE; - howto.bitpos = 0; - howto.complain_on_overflow = (rel->r_size & 0x80 - ? complain_overflow_signed - : complain_overflow_bitfield); - howto.special_function = NULL; - howto.name = "internal"; - howto.partial_inplace = TRUE; - howto.src_mask = howto.dst_mask = N_ONES (howto.bitsize); - howto.pcrel_offset = FALSE; - - /* symbol */ - val = 0; - addend = 0; - h = NULL; - sym = NULL; - symndx = rel->r_symndx; - - if (-1 != symndx) - { - asection *sec; - - h = obj_xcoff_sym_hashes (input_bfd)[symndx]; - sym = syms + symndx; - addend = - sym->n_value; - - if (NULL == h) - { - sec = sections[symndx]; - /* 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 - { - if (info->unresolved_syms_in_objects != RM_IGNORE - && (h->flags & XCOFF_WAS_UNDEFINED) != 0) - info->callbacks->undefined_symbol - (info, h->root.root.string, input_bfd, input_section, - rel->r_vaddr - input_section->vma, - info->unresolved_syms_in_objects == RM_DIAGNOSE - && !info->warn_unresolved_syms); - - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - sec = h->root.u.def.section; - val = (h->root.u.def.value - + sec->output_section->vma - + sec->output_offset); - } - else if (h->root.type == bfd_link_hash_common) - { - sec = h->root.u.c.p->section; - val = (sec->output_section->vma - + sec->output_offset); - } - else - { - BFD_ASSERT (bfd_link_relocatable (info) - || (h->flags & XCOFF_DEF_DYNAMIC) != 0 - || (h->flags & XCOFF_IMPORT) != 0); - } - } - } - - if (rel->r_type >= XCOFF_MAX_CALCULATE_RELOCATION - || !((*xcoff64_calculate_relocation[rel->r_type]) - (input_bfd, input_section, output_bfd, rel, sym, &howto, val, - addend, &relocation, contents))) - return FALSE; - - /* address */ - address = rel->r_vaddr - input_section->vma; - location = contents + address; - - if (address > input_section->size) - abort (); - - /* Get the value we are going to relocate. */ - if (1 == howto.size) - value_to_relocate = bfd_get_16 (input_bfd, location); - else if (2 == howto.size) - value_to_relocate = bfd_get_32 (input_bfd, location); - else - value_to_relocate = bfd_get_64 (input_bfd, location); - - /* overflow. - - FIXME: We may drop bits during the addition - which we don't check for. We must either check at every single - operation, which would be tedious, or we must do the computations - in a type larger than bfd_vma, which would be inefficient. */ - - if (((*xcoff_complain_overflow[howto.complain_on_overflow]) - (input_bfd, value_to_relocate, relocation, &howto))) - { - const char *name; - char buf[SYMNMLEN + 1]; - char reloc_type_name[10]; - - if (symndx == -1) - { - name = "*ABS*"; - } - else if (h != NULL) - { - name = NULL; - } - else - { - name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); - if (name == NULL) - name = "UNKNOWN"; - } - sprintf (reloc_type_name, "0x%02x", rel->r_type); - - (*info->callbacks->reloc_overflow) - (info, (h ? &h->root : NULL), name, reloc_type_name, - (bfd_vma) 0, input_bfd, input_section, - rel->r_vaddr - input_section->vma); - } - - /* Add RELOCATION to the right bits of VALUE_TO_RELOCATE. */ - value_to_relocate = ((value_to_relocate & ~howto.dst_mask) - | (((value_to_relocate & howto.src_mask) - + relocation) & howto.dst_mask)); - - /* Put the value back in the object file. */ - if (1 == howto.size) - bfd_put_16 (input_bfd, value_to_relocate, location); - else if (2 == howto.size) - bfd_put_32 (input_bfd, value_to_relocate, location); - else - bfd_put_64 (input_bfd, value_to_relocate, location); - - } - return TRUE; -} /* The XCOFF reloc table. Actually, XCOFF relocations specify the @@ -1496,6 +1308,196 @@ xcoff64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, return NULL; } +/* This is the relocation function for the PowerPC64. + See xcoff_ppc_relocation_section for more information. */ + +bfd_boolean +xcoff64_ppc_relocate_section (bfd *output_bfd, + struct bfd_link_info *info, + bfd *input_bfd, + asection *input_section, + bfd_byte *contents, + struct internal_reloc *relocs, + struct internal_syment *syms, + asection **sections) +{ + struct internal_reloc *rel; + struct internal_reloc *relend; + + rel = relocs; + relend = rel + input_section->reloc_count; + for (; rel < relend; rel++) + { + long symndx; + struct xcoff_link_hash_entry *h; + struct internal_syment *sym; + bfd_vma addend; + bfd_vma val; + struct reloc_howto_struct howto; + bfd_vma relocation; + bfd_vma value_to_relocate; + bfd_vma address; + bfd_byte *location; + + /* Relocation type R_REF is a special relocation type which is + merely used to prevent garbage collection from occurring for + the csect including the symbol which it references. */ + if (rel->r_type == R_REF) + continue; + + /* howto */ + howto.type = rel->r_type; + howto.rightshift = 0; + howto.bitsize = (rel->r_size & 0x3f) + 1; + howto.size = howto.bitsize > 16 ? (howto.bitsize > 32 ? 4 : 2) : 1; + howto.pc_relative = FALSE; + howto.bitpos = 0; + howto.complain_on_overflow = (rel->r_size & 0x80 + ? complain_overflow_signed + : complain_overflow_bitfield); + howto.special_function = NULL; + howto.name = "internal"; + howto.partial_inplace = TRUE; + howto.src_mask = howto.dst_mask = N_ONES (howto.bitsize); + howto.pcrel_offset = FALSE; + + /* symbol */ + val = 0; + addend = 0; + h = NULL; + sym = NULL; + symndx = rel->r_symndx; + + if (-1 != symndx) + { + asection *sec; + + h = obj_xcoff_sym_hashes (input_bfd)[symndx]; + sym = syms + symndx; + addend = - sym->n_value; + + if (NULL == h) + { + sec = sections[symndx]; + /* 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 + { + if (info->unresolved_syms_in_objects != RM_IGNORE + && (h->flags & XCOFF_WAS_UNDEFINED) != 0) + info->callbacks->undefined_symbol + (info, h->root.root.string, input_bfd, input_section, + rel->r_vaddr - input_section->vma, + info->unresolved_syms_in_objects == RM_DIAGNOSE + && !info->warn_unresolved_syms); + + if (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + { + sec = h->root.u.def.section; + val = (h->root.u.def.value + + sec->output_section->vma + + sec->output_offset); + } + else if (h->root.type == bfd_link_hash_common) + { + sec = h->root.u.c.p->section; + val = (sec->output_section->vma + + sec->output_offset); + } + else + { + BFD_ASSERT (bfd_link_relocatable (info) + || (h->flags & XCOFF_DEF_DYNAMIC) != 0 + || (h->flags & XCOFF_IMPORT) != 0); + } + } + } + + if (rel->r_type >= XCOFF_MAX_CALCULATE_RELOCATION + || !((*xcoff64_calculate_relocation[rel->r_type]) + (input_bfd, input_section, output_bfd, rel, sym, &howto, val, + addend, &relocation, contents))) + return FALSE; + + /* address */ + address = rel->r_vaddr - input_section->vma; + location = contents + address; + + if (address > input_section->size) + abort (); + + /* Get the value we are going to relocate. */ + if (1 == howto.size) + value_to_relocate = bfd_get_16 (input_bfd, location); + else if (2 == howto.size) + value_to_relocate = bfd_get_32 (input_bfd, location); + else + value_to_relocate = bfd_get_64 (input_bfd, location); + + /* overflow. + + FIXME: We may drop bits during the addition + which we don't check for. We must either check at every single + operation, which would be tedious, or we must do the computations + in a type larger than bfd_vma, which would be inefficient. */ + + if (((*xcoff_complain_overflow[howto.complain_on_overflow]) + (input_bfd, value_to_relocate, relocation, &howto))) + { + const char *name; + char buf[SYMNMLEN + 1]; + char reloc_type_name[10]; + + if (symndx == -1) + { + name = "*ABS*"; + } + else if (h != NULL) + { + name = NULL; + } + else + { + name = _bfd_coff_internal_syment_name (input_bfd, sym, buf); + if (name == NULL) + name = "UNKNOWN"; + } + sprintf (reloc_type_name, "0x%02x", rel->r_type); + + (*info->callbacks->reloc_overflow) + (info, (h ? &h->root : NULL), name, reloc_type_name, + (bfd_vma) 0, input_bfd, input_section, + rel->r_vaddr - input_section->vma); + } + + /* Add RELOCATION to the right bits of VALUE_TO_RELOCATE. */ + value_to_relocate = ((value_to_relocate & ~howto.dst_mask) + | (((value_to_relocate & howto.src_mask) + + relocation) & howto.dst_mask)); + + /* Put the value back in the object file. */ + if (1 == howto.size) + bfd_put_16 (input_bfd, value_to_relocate, location); + else if (2 == howto.size) + bfd_put_32 (input_bfd, value_to_relocate, location); + else + bfd_put_64 (input_bfd, value_to_relocate, location); + + } + return TRUE; +} + + /* PR 21786: The PE/COFF standard does not require NUL termination for any of the ASCII fields in the archive headers. So in order to be able to extract numerical values we provide our own versions of strtol and strtoll which |