diff options
Diffstat (limited to 'bfd/elf-hppa.h')
| -rw-r--r-- | bfd/elf-hppa.h | 175 |
1 files changed, 150 insertions, 25 deletions
diff --git a/bfd/elf-hppa.h b/bfd/elf-hppa.h index a98c2b0..99a66f4 100644 --- a/bfd/elf-hppa.h +++ b/bfd/elf-hppa.h @@ -64,6 +64,12 @@ static boolean elf_hppa_fake_sections static void elf_hppa_final_write_processing PARAMS ((bfd *, boolean)); +static int hppa_unwind_entry_compare + PARAMS ((const PTR, const PTR)); + +static boolean elf_hppa_sort_unwind + PARAMS ((bfd *)); + #if ARCH_SIZE == 64 static boolean elf_hppa_add_symbol_hook PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, @@ -75,6 +81,9 @@ static boolean elf_hppa_unmark_useless_dynamic_symbols static boolean elf_hppa_remark_useless_dynamic_symbols PARAMS ((struct elf_link_hash_entry *, PTR)); +static boolean elf_hppa_is_dynamic_loader_symbol + PARAMS ((const char *)); + static void elf_hppa_record_segment_addrs PARAMS ((bfd *, asection *, PTR)); @@ -83,12 +92,12 @@ static boolean elf_hppa_final_link static boolean elf_hppa_relocate_section PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, - bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); + bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); static bfd_reloc_status_type elf_hppa_final_link_relocate PARAMS ((Elf_Internal_Rela *, bfd *, bfd *, asection *, - bfd_byte *, bfd_vma, struct bfd_link_info *, - asection *, struct elf_link_hash_entry *, + bfd_byte *, bfd_vma, struct bfd_link_info *, + asection *, struct elf_link_hash_entry *, struct elf64_hppa_dyn_hash_entry *)); static int elf_hppa_relocate_insn @@ -706,7 +715,7 @@ elf_hppa_reloc_final_type (abfd, base_type, format, field) be a section relative relocation. Dwarf2 (for example) uses 32bit section relative relocations. */ if (bfd_get_arch_info (abfd)->bits_per_address != 32) - final_type = R_PARISC_SECREL32; + final_type = R_PARISC_SECREL32; break; case e_psel: final_type = R_PARISC_PLABEL32; @@ -1034,6 +1043,64 @@ elf_hppa_final_write_processing (abfd, linker) | EF_PARISC_TRAPNIL); } +/* Comparison function for qsort to sort unwind section during a + final link. */ + +static int +hppa_unwind_entry_compare (a, b) + const PTR a; + const PTR b; +{ + const bfd_byte *ap, *bp; + unsigned long av, bv; + + ap = (const bfd_byte *) a; + av = (unsigned long) ap[0] << 24; + av |= (unsigned long) ap[1] << 16; + av |= (unsigned long) ap[2] << 8; + av |= (unsigned long) ap[3]; + + bp = (const bfd_byte *) b; + bv = (unsigned long) bp[0] << 24; + bv |= (unsigned long) bp[1] << 16; + bv |= (unsigned long) bp[2] << 8; + bv |= (unsigned long) bp[3]; + + return av < bv ? -1 : av > bv ? 1 : 0; +} + +static boolean elf_hppa_sort_unwind (abfd) + bfd *abfd; +{ + asection *s; + + /* Magic section names, but this is much safer than having + relocate_section remember where SEGREL32 relocs occurred. + Consider what happens if someone inept creates a linker script + that puts unwind information in .text. */ + s = bfd_get_section_by_name (abfd, ".PARISC.unwind"); + if (s != NULL) + { + bfd_size_type size; + char *contents; + + size = s->_raw_size; + contents = bfd_malloc (size); + if (contents == NULL) + return false; + + if (! bfd_get_section_contents (abfd, s, contents, (file_ptr) 0, size)) + return false; + + qsort (contents, (size_t) (size / 16), 16, hppa_unwind_entry_compare); + + if (! bfd_set_section_contents (abfd, s, contents, (file_ptr) 0, size)) + return false; + } + + return true; +} + #if ARCH_SIZE == 64 /* Hook called by the linker routine which adds symbols from an object file. HP's libraries define symbols with HP specific section @@ -1076,6 +1143,9 @@ elf_hppa_unmark_useless_dynamic_symbols (h, data) { struct bfd_link_info *info = (struct bfd_link_info *)data; + if (h->root.type == bfd_link_hash_warning) + h = (struct elf_link_hash_entry *) h->root.u.i.link; + /* If we are not creating a shared library, and this symbol is referenced by a shared library but is not defined anywhere, then the generic code will warn that it is undefined. @@ -1109,6 +1179,9 @@ elf_hppa_remark_useless_dynamic_symbols (h, data) { struct bfd_link_info *info = (struct bfd_link_info *)data; + if (h->root.type == bfd_link_hash_warning) + h = (struct elf_link_hash_entry *) h->root.u.i.link; + /* If we are not creating a shared library, and this symbol is referenced by a shared library but is not defined anywhere, then the generic code will warn that it is undefined. @@ -1136,6 +1209,23 @@ elf_hppa_remark_useless_dynamic_symbols (h, data) return true; } +static boolean +elf_hppa_is_dynamic_loader_symbol (name) + const char * name; +{ + return (! strcmp (name, "__CPU_REVISION") + || ! strcmp (name, "__CPU_KEYBITS_1") + || ! strcmp (name, "__SYSTEM_ID_D") + || ! strcmp (name, "__FPU_MODEL") + || ! strcmp (name, "__FPU_REVISION") + || ! strcmp (name, "__ARGC") + || ! strcmp (name, "__ARGV") + || ! strcmp (name, "__ENVP") + || ! strcmp (name, "__TLS_SIZE_D") + || ! strcmp (name, "__LOAD_INFO") + || ! strcmp (name, "__systab")); +} + /* Record the lowest address for the data and text segments. */ static void elf_hppa_record_segment_addrs (abfd, section, data) @@ -1258,6 +1348,11 @@ elf_hppa_final_link (abfd, info) elf_hppa_remark_useless_dynamic_symbols, info); + /* If we're producing a final executable, sort the contents of the + unwind section. */ + if (retval) + retval = elf_hppa_sort_unwind (abfd); + return retval; } @@ -1390,7 +1485,7 @@ elf_hppa_relocate_section (output_bfd, info, input_bfd, input_section, relocation = 0; } /* Allow undefined symbols in shared libraries. */ - else if (info->shared && !info->no_undefined + else if (info->shared && !info->no_undefined && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) { if (info->symbolic) @@ -1419,11 +1514,17 @@ elf_hppa_relocate_section (output_bfd, info, input_bfd, input_section, relocation = 0; else { - if (!((*info->callbacks->undefined_symbol) - (info, h->root.root.string, input_bfd, - input_section, rel->r_offset, true))) - return false; - break; + /* Ignore dynamic loader defined symbols. */ + if (elf_hppa_is_dynamic_loader_symbol (h->root.root.string)) + relocation = 0; + else + { + if (!((*info->callbacks->undefined_symbol) + (info, h->root.root.string, input_bfd, + input_section, rel->r_offset, true))) + return false; + break; + } } } @@ -1620,11 +1721,7 @@ elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, a local function which had its address taken. */ if (dyn_h->h == NULL) { - bfd_put_64 (hppa_info->dlt_sec->owner, - value, - hppa_info->dlt_sec->contents + dyn_h->dlt_offset); - - /* Now handle .opd creation if needed. */ + /* Now do .opd creation if needed. */ if (r_type == R_PARISC_LTOFF_FPTR14R || r_type == R_PARISC_LTOFF_FPTR14DR || r_type == R_PARISC_LTOFF_FPTR14WR @@ -1638,7 +1735,7 @@ elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, 0, 16); /* The next word is the address of the function. */ - bfd_put_64 (hppa_info->opd_sec->owner, value, + bfd_put_64 (hppa_info->opd_sec->owner, value + addend, (hppa_info->opd_sec->contents + dyn_h->opd_offset + 16)); @@ -1648,7 +1745,17 @@ elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, bfd_put_64 (hppa_info->opd_sec->owner, value, (hppa_info->opd_sec->contents + dyn_h->opd_offset + 24)); + + /* The DLT value is the address of the .opd entry. */ + value = (dyn_h->opd_offset + + hppa_info->opd_sec->output_offset + + hppa_info->opd_sec->output_section->vma); + addend = 0; } + + bfd_put_64 (hppa_info->dlt_sec->owner, + value + addend, + hppa_info->dlt_sec->contents + dyn_h->dlt_offset); } /* We want the value of the DLT offset for this symbol, not @@ -1666,7 +1773,7 @@ elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, if (r_type == R_PARISC_DLTIND21L || r_type == R_PARISC_LTOFF_FPTR21L || r_type == R_PARISC_LTOFF_TP21L) - value = hppa_field_adjust (value, addend, e_lrsel); + value = hppa_field_adjust (value, 0, e_lsel); else if (r_type == R_PARISC_DLTIND14F || r_type == R_PARISC_LTOFF_FPTR16F || r_type == R_PARISC_LTOFF_FPTR16WF @@ -1677,9 +1784,9 @@ elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, || r_type == R_PARISC_LTOFF_TP16F || r_type == R_PARISC_LTOFF_TP16WF || r_type == R_PARISC_LTOFF_TP16DF) - value = hppa_field_adjust (value, addend, e_fsel); + value = hppa_field_adjust (value, 0, e_fsel); else - value = hppa_field_adjust (value, addend, e_rrsel); + value = hppa_field_adjust (value, 0, e_rsel); insn = elf_hppa_relocate_insn (insn, (int) value, r_type); break; @@ -1804,7 +1911,7 @@ elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, memset (hppa_info->opd_sec->contents + dyn_h->opd_offset, 0, 16); /* The next word is the address of the function. */ - bfd_put_64 (hppa_info->opd_sec->owner, value, + bfd_put_64 (hppa_info->opd_sec->owner, value + addend, (hppa_info->opd_sec->contents + dyn_h->opd_offset + 16)); @@ -1813,6 +1920,15 @@ elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, (hppa_info->opd_sec->output_section->owner); bfd_put_64 (hppa_info->opd_sec->owner, value, hppa_info->opd_sec->contents + dyn_h->opd_offset + 24); + + /* The DLT value is the address of the .opd entry. */ + value = (dyn_h->opd_offset + + hppa_info->opd_sec->output_offset + + hppa_info->opd_sec->output_section->vma); + + bfd_put_64 (hppa_info->dlt_sec->owner, + value, + hppa_info->dlt_sec->contents + dyn_h->dlt_offset); } /* We want the value of the DLT offset for this symbol, not @@ -1838,7 +1954,7 @@ elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, memset (hppa_info->opd_sec->contents + dyn_h->opd_offset, 0, 16); /* The next word is the address of the function. */ - bfd_put_64 (hppa_info->opd_sec->owner, value, + bfd_put_64 (hppa_info->opd_sec->owner, value + addend, (hppa_info->opd_sec->contents + dyn_h->opd_offset + 16)); @@ -1847,6 +1963,15 @@ elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, (hppa_info->opd_sec->output_section->owner); bfd_put_64 (hppa_info->opd_sec->owner, value, hppa_info->opd_sec->contents + dyn_h->opd_offset + 24); + + /* The DLT value is the address of the .opd entry. */ + value = (dyn_h->opd_offset + + hppa_info->opd_sec->output_offset + + hppa_info->opd_sec->output_section->vma); + + bfd_put_64 (hppa_info->dlt_sec->owner, + value, + hppa_info->dlt_sec->contents + dyn_h->dlt_offset); } /* We want the value of the DLT offset for this symbol, not @@ -1938,7 +2063,7 @@ elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, memset (hppa_info->opd_sec->contents + dyn_h->opd_offset, 0, 16); /* The next word is the address of the function. */ - bfd_put_64 (hppa_info->opd_sec->owner, value, + bfd_put_64 (hppa_info->opd_sec->owner, value + addend, (hppa_info->opd_sec->contents + dyn_h->opd_offset + 16)); @@ -1950,12 +2075,12 @@ elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, } /* We want the value of the OPD offset for this symbol, not - the symbol's actual address. */ + the symbol's actual address. */ value = (dyn_h->opd_offset + hppa_info->opd_sec->output_offset + hppa_info->opd_sec->output_section->vma); - bfd_put_64 (input_bfd, value + addend, hit_data); + bfd_put_64 (input_bfd, value, hit_data); return bfd_reloc_ok; } @@ -1991,7 +2116,7 @@ elf_hppa_final_link_relocate (rel, input_bfd, output_bfd, bfd_put_32 (input_bfd, value, hit_data); else bfd_put_64 (input_bfd, value, hit_data); - return bfd_reloc_ok; + return bfd_reloc_ok; } /* Something we don't know how to handle. */ |