X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Felf64-sparc.c;h=4933f8de801e92682fef8bff680dfe81b013bd5a;hb=86fb1dece37497b267579ed4f062d280cd5760cd;hp=50b0cd58cc6ecfa500ce48f822e07c81c1f6ffde;hpb=c629eae01a0ff6a72882b1a7aad636d38c98bc50;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf64-sparc.c b/bfd/elf64-sparc.c index 50b0cd58cc..4933f8de80 100644 --- a/bfd/elf64-sparc.c +++ b/bfd/elf64-sparc.c @@ -1,5 +1,5 @@ /* SPARC-specific support for 64-bit ELF - Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 + Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. This file is part of BFD, the Binary File Descriptor library. @@ -69,8 +69,6 @@ static boolean sparc64_elf_output_arch_syms static void sparc64_elf_symbol_processing PARAMS ((bfd *, asymbol *)); -static boolean sparc64_elf_copy_private_bfd_data - PARAMS ((bfd *, bfd *)); static boolean sparc64_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); @@ -118,7 +116,7 @@ static reloc_howto_type sparc64_elf_howto_table[] = HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", false,0,0xffffffff,true), HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", false,0,0x000000ff,true), HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", false,0,0x0000ffff,true), - HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0x00ffffff,true), + HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", false,0,0xffffffff,true), HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", false,0,0x3fffffff,true), HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", false,0,0x003fffff,true), HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", false,0,0x003fffff,true), @@ -137,8 +135,8 @@ static reloc_howto_type sparc64_elf_howto_table[] = HOWTO(R_SPARC_RELATIVE, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",false,0,0x00000000,true), HOWTO(R_SPARC_UA32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", false,0,0xffffffff,true), #ifndef SPARC64_OLD_RELOCS + HOWTO(R_SPARC_PLT32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", false,0,0xffffffff,true), /* These aren't implemented yet. */ - HOWTO(R_SPARC_PLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PLT32", false,0,0x00000000,true), HOWTO(R_SPARC_HIPLT22, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_HIPLT22", false,0,0x00000000,true), HOWTO(R_SPARC_LOPLT10, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_LOPLT10", false,0,0x00000000,true), HOWTO(R_SPARC_PCPLT32, 0,0,00,false,0,complain_overflow_dont, sparc_elf_notsup_reloc, "R_SPARC_PCPLT32", false,0,0x00000000,true), @@ -162,7 +160,7 @@ static reloc_howto_type sparc64_elf_howto_table[] = HOWTO(R_SPARC_5, 0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", false,0,0x0000001f,true), HOWTO(R_SPARC_6, 0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", false,0,0x0000003f,true), HOWTO(R_SPARC_DISP64, 0,4,64,true, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP64", false,0,MINUS_ONE, true), - HOWTO(R_SPARC_PLT64, 0,4,64,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_PLT64", false,0,MINUS_ONE, false), + HOWTO(R_SPARC_PLT64, 0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT64", false,0,MINUS_ONE, true), HOWTO(R_SPARC_HIX22, 0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc, "R_SPARC_HIX22", false,0,MINUS_ONE, false), HOWTO(R_SPARC_LOX10, 0,4, 0,false,0,complain_overflow_dont, sparc_elf_lox10_reloc, "R_SPARC_LOX10", false,0,MINUS_ONE, false), HOWTO(R_SPARC_H44, 22,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc, "R_SPARC_H44", false,0,0x003fffff,false), @@ -182,6 +180,7 @@ static const struct elf_reloc_map sparc_reloc_map[] = { { BFD_RELOC_NONE, R_SPARC_NONE, }, { BFD_RELOC_16, R_SPARC_16, }, + { BFD_RELOC_16_PCREL, R_SPARC_DISP16 }, { BFD_RELOC_8, R_SPARC_8 }, { BFD_RELOC_8_PCREL, R_SPARC_DISP8 }, { BFD_RELOC_CTOR, R_SPARC_64 }, @@ -190,6 +189,7 @@ static const struct elf_reloc_map sparc_reloc_map[] = { BFD_RELOC_HI22, R_SPARC_HI22 }, { BFD_RELOC_LO10, R_SPARC_LO10, }, { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 }, + { BFD_RELOC_64_PCREL, R_SPARC_DISP64 }, { BFD_RELOC_SPARC22, R_SPARC_22 }, { BFD_RELOC_SPARC13, R_SPARC_13 }, { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 }, @@ -222,6 +222,9 @@ static const struct elf_reloc_map sparc_reloc_map[] = { BFD_RELOC_SPARC_5, R_SPARC_5 }, { BFD_RELOC_SPARC_6, R_SPARC_6 }, { BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64 }, +#ifndef SPARC64_OLD_RELOCS + { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 }, +#endif { BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64 }, { BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22 }, { BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10 }, @@ -656,14 +659,14 @@ sparc64_elf_bfd_link_hash_table_create (abfd) struct sparc64_elf_link_hash_table *ret; bfd_size_type amt = sizeof (struct sparc64_elf_link_hash_table); - ret = (struct sparc64_elf_link_hash_table *) bfd_zalloc (abfd, amt); + ret = (struct sparc64_elf_link_hash_table *) bfd_zmalloc (amt); if (ret == (struct sparc64_elf_link_hash_table *) NULL) return NULL; if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, _bfd_elf_link_hash_newfunc)) { - bfd_release (abfd, ret); + free (ret); return NULL; } @@ -1169,8 +1172,10 @@ sparc64_elf_check_relocs (abfd, info, sec, relocs) } h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; - break; - + if (ELF64_R_TYPE_ID (rel->r_info) != R_SPARC_PLT32 + && ELF64_R_TYPE_ID (rel->r_info) != R_SPARC_PLT64) + break; + /* Fall through. */ case R_SPARC_PC10: case R_SPARC_PC22: case R_SPARC_PC_HH22: @@ -1326,11 +1331,9 @@ sparc64_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) if (p->name != NULL && strcmp (p->name, *namep)) { (*_bfd_error_handler) - (_("Register %%g%d used incompatibly: %s in %s"), + (_("Register %%g%d used incompatibly: %s in %s, previously %s in %s"), (int) sym->st_value, - **namep ? *namep : "#scratch", bfd_archive_filename (abfd)); - (*_bfd_error_handler) - (_(" previously %s in %s"), + **namep ? *namep : "#scratch", bfd_archive_filename (abfd), *p->name ? p->name : "#scratch", bfd_archive_filename (p->abfd)); return false; } @@ -1351,10 +1354,8 @@ sparc64_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) if (type > STT_FUNC) type = 0; (*_bfd_error_handler) - (_("Symbol `%s' has differing types: %s in %s"), - *namep, "REGISTER", bfd_archive_filename (abfd)); - (*_bfd_error_handler) - (_(" previously %s in %s"), + (_("Symbol `%s' has differing types: REGISTER in %s, previously %s in %s"), + *namep, bfd_archive_filename (abfd), stt_types[type], bfd_archive_filename (p->abfd)); return false; } @@ -1384,9 +1385,8 @@ sparc64_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) *namep = NULL; return true; } - else if (! *namep || ! **namep) - return true; - else + else if (*namep && **namep + && info->hash->creator->flavour == bfd_target_elf_flavour) { int i; struct sparc64_elf_app_reg *p; @@ -1400,11 +1400,9 @@ sparc64_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) if (type > STT_FUNC) type = 0; (*_bfd_error_handler) - (_("Symbol `%s' has differing types: %s in %s"), - *namep, stt_types[type], bfd_archive_filename (abfd)); - (*_bfd_error_handler) - (_(" previously %s in %s"), - "REGISTER", bfd_archive_filename (p->abfd)); + (_("Symbol `%s' has differing types: %s in %s, previously REGISTER in %s"), + *namep, stt_types[type], bfd_archive_filename (abfd), + bfd_archive_filename (p->abfd)); return false; } } @@ -1882,6 +1880,17 @@ sparc64_elf_relax_section (abfd, section, link_info, again) return true; } +/* This is the condition under which finish_dynamic_symbol will be called + from elflink.h. If elflink.h doesn't call our finish_dynamic_symbol + routine, we'll need to do something about initializing any .plt and + .got entries in relocate_section. */ +#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \ + ((DYN) \ + && ((INFO)->shared \ + || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ + && ((H)->dynindx != -1 \ + || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) + /* Relocate a SPARC64 ELF section. */ static boolean @@ -1929,8 +1938,10 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, struct elf_link_hash_entry *h; Elf_Internal_Sym *sym; asection *sec; - bfd_vma relocation; + bfd_vma relocation, off; bfd_reloc_status_type r; + boolean is_plt = false; + boolean unresolved_reloc; r_type = ELF64_R_TYPE_ID (rel->r_info); if (r_type < 0 || r_type >= (int) R_SPARC_max_std) @@ -1965,6 +1976,7 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, h = NULL; sym = NULL; sec = NULL; + unresolved_reloc = false; if (r_symndx < symtab_hdr->sh_info) { sym = local_syms + r_symndx; @@ -1977,116 +1989,30 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, while (h->root.type == bfd_link_hash_indirect || h->root.type == bfd_link_hash_warning) h = (struct elf_link_hash_entry *) h->root.u.i.link; + + relocation = 0; if (h->root.type == bfd_link_hash_defined || h->root.type == bfd_link_hash_defweak) { - boolean skip_it = false; sec = h->root.u.def.section; - - switch (r_type) - { - case R_SPARC_WPLT30: - case R_SPARC_PLT32: - case R_SPARC_HIPLT22: - case R_SPARC_LOPLT10: - case R_SPARC_PCPLT32: - case R_SPARC_PCPLT22: - case R_SPARC_PCPLT10: - case R_SPARC_PLT64: - if (h->plt.offset != (bfd_vma) -1) - skip_it = true; - break; - - case R_SPARC_GOT10: - case R_SPARC_GOT13: - case R_SPARC_GOT22: - if (elf_hash_table(info)->dynamic_sections_created - && (!info->shared - || (!info->symbolic && h->dynindx != -1) - || !(h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR))) - skip_it = true; - break; - - case R_SPARC_PC10: - case R_SPARC_PC22: - case R_SPARC_PC_HH22: - case R_SPARC_PC_HM10: - case R_SPARC_PC_LM22: - if (!strcmp(h->root.root.string, "_GLOBAL_OFFSET_TABLE_")) - break; - /* FALLTHRU */ - - case R_SPARC_8: - case R_SPARC_16: - case R_SPARC_32: - case R_SPARC_DISP8: - case R_SPARC_DISP16: - case R_SPARC_DISP32: - case R_SPARC_WDISP30: - case R_SPARC_WDISP22: - case R_SPARC_HI22: - case R_SPARC_22: - case R_SPARC_13: - case R_SPARC_LO10: - case R_SPARC_UA32: - case R_SPARC_10: - case R_SPARC_11: - case R_SPARC_64: - case R_SPARC_OLO10: - case R_SPARC_HH22: - case R_SPARC_HM10: - case R_SPARC_LM22: - case R_SPARC_WDISP19: - case R_SPARC_WDISP16: - case R_SPARC_7: - case R_SPARC_5: - case R_SPARC_6: - case R_SPARC_DISP64: - case R_SPARC_HIX22: - case R_SPARC_LOX10: - case R_SPARC_H44: - case R_SPARC_M44: - case R_SPARC_L44: - case R_SPARC_UA64: - case R_SPARC_UA16: - if (info->shared - && ((!info->symbolic && h->dynindx != -1) - || !(h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR)) - && ((input_section->flags & SEC_ALLOC) != 0 - /* DWARF will emit R_SPARC_{32,64} relocations in - its sections against symbols defined externally - in shared libraries. We can't do anything - with them here. */ - || ((input_section->flags & SEC_DEBUGGING) != 0 - && (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_DYNAMIC) != 0))) - skip_it = true; - break; - } - - if (skip_it) - { - /* In these cases, we don't need the relocation - value. We check specially because in some - obscure cases sec->output_section will be NULL. */ - relocation = 0; - } + if (sec->output_section == NULL) + /* Set a flag that will be cleared later if we find a + relocation value for this symbol. output_section + is typically NULL for symbols satisfied by a shared + library. */ + unresolved_reloc = true; else - { - relocation = (h->root.u.def.value - + sec->output_section->vma - + sec->output_offset); - } + relocation = (h->root.u.def.value + + sec->output_section->vma + + sec->output_offset); } else if (h->root.type == bfd_link_hash_undefweak) - relocation = 0; + ; else if (info->shared && (!info->symbolic || info->allow_shlib_undefined) && !info->no_undefined && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) - relocation = 0; + ; else { if (! ((*info->callbacks->undefined_symbol) @@ -2107,6 +2033,7 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, } } + do_dynreloc: /* When generating a shared object, these relocations are copied into the output file to be resolved at run time. */ if (info->shared && r_symndx != 0 && (input_section->flags & SEC_ALLOC)) @@ -2125,11 +2052,11 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, case R_SPARC_DISP8: case R_SPARC_DISP16: case R_SPARC_DISP32: + case R_SPARC_DISP64: case R_SPARC_WDISP30: case R_SPARC_WDISP22: case R_SPARC_WDISP19: case R_SPARC_WDISP16: - case R_SPARC_DISP64: if (h == NULL) break; /* Fall through. */ @@ -2160,7 +2087,7 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, case R_SPARC_UA16: { Elf_Internal_Rela outrel; - boolean skip; + boolean skip, relocate; if (sreloc == NULL) { @@ -2183,12 +2110,15 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, } skip = false; + relocate = false; outrel.r_offset = _bfd_elf_section_offset (output_bfd, info, input_section, rel->r_offset); if (outrel.r_offset == (bfd_vma) -1) skip = true; + else if (outrel.r_offset == (bfd_vma) -2) + skip = true, relocate = true; outrel.r_offset += (input_section->output_section->vma + input_section->output_offset); @@ -2215,13 +2145,25 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, case R_SPARC_UA64: if (!(outrel.r_offset & 7)) r_type = R_SPARC_64; break; + case R_SPARC_DISP8: + case R_SPARC_DISP16: + case R_SPARC_DISP32: + case R_SPARC_DISP64: + /* If the symbol is not dynamic, we should not keep + a dynamic relocation. But an .rela.* slot has been + allocated for it, output R_SPARC_NONE. + FIXME: Add code tracking needed dynamic relocs as + e.g. i386 has. */ + if (h->dynindx == -1) + skip = true, relocate = true; + break; } if (skip) memset (&outrel, 0, sizeof outrel); /* h->dynindx may be -1 if the symbol was marked to become local. */ - else if (h != NULL + else if (h != NULL && ! is_plt && ((! info->symbolic && h->dynindx != -1) || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)) @@ -2245,7 +2187,9 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, { long indx; - if (h == NULL) + if (is_plt) + sec = splt; + else if (h == NULL) sec = local_sections[r_symndx]; else { @@ -2298,7 +2242,8 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, /* This reloc will be computed at runtime, so there's no need to do anything now. */ - continue; + if (! relocate) + continue; } break; } @@ -2319,14 +2264,18 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, if (h != NULL) { - bfd_vma off = h->got.offset; + boolean dyn; + + off = h->got.offset; BFD_ASSERT (off != (bfd_vma) -1); + dyn = elf_hash_table (info)->dynamic_sections_created; - if (! elf_hash_table (info)->dynamic_sections_created + if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h) || (info->shared - && (info->symbolic || h->dynindx == -1) - && (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR))) + && (info->symbolic + || h->dynindx == -1 + || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) { /* This is actually a static link, or it is a -Bsymbolic link and the symbol is defined locally, or the symbol @@ -2349,12 +2298,11 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, h->got.offset |= 1; } } - relocation = sgot->output_offset + off - got_base; + else + unresolved_reloc = false; } else { - bfd_vma off; - BFD_ASSERT (local_got_offsets != NULL); off = local_got_offsets[r_symndx]; BFD_ASSERT (off != (bfd_vma) -1); @@ -2400,8 +2348,8 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, else bfd_put_64 (output_bfd, relocation, sgot->contents + off); } - relocation = sgot->output_offset + off - got_base; } + relocation = sgot->output_offset + off - got_base; goto do_default; case R_SPARC_WPLT30: @@ -2433,8 +2381,15 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, relocation = (splt->output_section->vma + splt->output_offset + sparc64_elf_plt_entry_offset (h->plt.offset)); + unresolved_reloc = false; if (r_type == R_SPARC_WPLT30) goto do_wplt30; + if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64) + { + r_type = r_type == R_SPARC_PLT32 ? R_SPARC_32 : R_SPARC_64; + is_plt = true; + goto do_dynreloc; + } goto do_default; case R_SPARC_OLO10: @@ -2610,6 +2565,17 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section, break; } + if (unresolved_reloc + && !(info->shared + && (input_section->flags & SEC_DEBUGGING) != 0 + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) + (*_bfd_error_handler) + (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), + bfd_archive_filename (input_bfd), + bfd_get_section_name (input_bfd, input_section), + (long) rel->r_offset, + h->root.root.string); + switch (r) { case bfd_reloc_ok: @@ -2942,24 +2908,6 @@ sparc64_elf_reloc_type_class (rela) /* Functions for dealing with the e_flags field. */ -/* Copy backend specific data from one object module to another */ -static boolean -sparc64_elf_copy_private_bfd_data (ibfd, obfd) - bfd *ibfd, *obfd; -{ - if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour - || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return true; - - BFD_ASSERT (!elf_flags_init (obfd) - || (elf_elfheader (obfd)->e_flags - == elf_elfheader (ibfd)->e_flags)); - - elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; - elf_flags_init (obfd) = true; - return true; -} - /* Merge backend specific data from an object file to the output object file when linking. */ @@ -3181,8 +3129,6 @@ const struct elf_size_info sparc64_elf_size_info = sparc64_elf_print_symbol_all #define elf_backend_output_arch_syms \ sparc64_elf_output_arch_syms -#define bfd_elf64_bfd_copy_private_bfd_data \ - sparc64_elf_copy_private_bfd_data #define bfd_elf64_bfd_merge_private_bfd_data \ sparc64_elf_merge_private_bfd_data