X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Felf32-i386.c;h=f689bee56bedf88ed1e7951ba4bf53cb51347d24;hb=2605216ead6dc7de911e115c7dc972c54d8786c7;hp=238772e4c6192d02e3e81b6ab157c82f6e4d0913;hpb=ec33885937c311707a20bac4207422abde93511e;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c index 238772e4c6..f689bee56b 100644 --- a/bfd/elf32-i386.c +++ b/bfd/elf32-i386.c @@ -1,22 +1,22 @@ /* Intel 80386/80486-specific support for 32-bit ELF - Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 - Free Software Foundation, Inc. + Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, + 2003, 2004 Free Software Foundation, Inc. -This file is part of BFD, the Binary File Descriptor library. + This file is part of BFD, the Binary File Descriptor library. -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "bfd.h" #include "sysdep.h" @@ -24,244 +24,280 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "libbfd.h" #include "elf-bfd.h" -static reloc_howto_type *elf_i386_reloc_type_lookup - PARAMS ((bfd *, bfd_reloc_code_real_type)); -static void elf_i386_info_to_howto - PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); -static void elf_i386_info_to_howto_rel - PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *)); -static boolean elf_i386_is_local_label_name - PARAMS ((bfd *, const char *)); -static boolean elf_i386_grok_prstatus - PARAMS ((bfd *abfd, Elf_Internal_Note *note)); -static boolean elf_i386_grok_psinfo - PARAMS ((bfd *abfd, Elf_Internal_Note *note)); -static struct bfd_hash_entry *link_hash_newfunc - PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); -static struct bfd_link_hash_table *elf_i386_link_hash_table_create - PARAMS ((bfd *)); -static boolean create_got_section - PARAMS((bfd *, struct bfd_link_info *)); -static boolean elf_i386_create_dynamic_sections - PARAMS((bfd *, struct bfd_link_info *)); -static void elf_i386_copy_indirect_symbol - PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *)); -static boolean elf_i386_check_relocs - PARAMS ((bfd *, struct bfd_link_info *, asection *, - const Elf_Internal_Rela *)); -static asection *elf_i386_gc_mark_hook - PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, - struct elf_link_hash_entry *, Elf_Internal_Sym *)); -static boolean elf_i386_gc_sweep_hook - PARAMS ((bfd *, struct bfd_link_info *, asection *, - const Elf_Internal_Rela *)); -static boolean elf_i386_adjust_dynamic_symbol - PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); -static boolean allocate_dynrelocs - PARAMS ((struct elf_link_hash_entry *, PTR)); -static boolean readonly_dynrelocs - PARAMS ((struct elf_link_hash_entry *, PTR)); -static boolean elf_i386_fake_sections - PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *)); -static boolean elf_i386_size_dynamic_sections - PARAMS ((bfd *, struct bfd_link_info *)); -static boolean elf_i386_relocate_section - PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, - Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); -static boolean elf_i386_finish_dynamic_symbol - PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, - Elf_Internal_Sym *)); -static enum elf_reloc_type_class elf_i386_reloc_type_class - PARAMS ((const Elf_Internal_Rela *)); -static boolean elf_i386_finish_dynamic_sections - PARAMS ((bfd *, struct bfd_link_info *)); - -#define USE_REL 1 /* 386 uses REL relocations instead of RELA */ +/* 386 uses REL relocations instead of RELA. */ +#define USE_REL 1 #include "elf/i386.h" static reloc_howto_type elf_howto_table[]= { - HOWTO(R_386_NONE, 0, 0, 0, false, 0, complain_overflow_bitfield, + HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_386_NONE", - true, 0x00000000, 0x00000000, false), - HOWTO(R_386_32, 0, 2, 32, false, 0, complain_overflow_bitfield, + TRUE, 0x00000000, 0x00000000, FALSE), + HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_386_32", - true, 0xffffffff, 0xffffffff, false), - HOWTO(R_386_PC32, 0, 2, 32, true, 0, complain_overflow_bitfield, + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_386_PC32", - true, 0xffffffff, 0xffffffff, true), - HOWTO(R_386_GOT32, 0, 2, 32, false, 0, complain_overflow_bitfield, + TRUE, 0xffffffff, 0xffffffff, TRUE), + HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_386_GOT32", - true, 0xffffffff, 0xffffffff, false), - HOWTO(R_386_PLT32, 0, 2, 32, true, 0, complain_overflow_bitfield, + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_386_PLT32", - true, 0xffffffff, 0xffffffff, true), - HOWTO(R_386_COPY, 0, 2, 32, false, 0, complain_overflow_bitfield, + TRUE, 0xffffffff, 0xffffffff, TRUE), + HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_386_COPY", - true, 0xffffffff, 0xffffffff, false), - HOWTO(R_386_GLOB_DAT, 0, 2, 32, false, 0, complain_overflow_bitfield, + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_386_GLOB_DAT", - true, 0xffffffff, 0xffffffff, false), - HOWTO(R_386_JUMP_SLOT, 0, 2, 32, false, 0, complain_overflow_bitfield, + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_386_JUMP_SLOT", - true, 0xffffffff, 0xffffffff, false), - HOWTO(R_386_RELATIVE, 0, 2, 32, false, 0, complain_overflow_bitfield, + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_386_RELATIVE", - true, 0xffffffff, 0xffffffff, false), - HOWTO(R_386_GOTOFF, 0, 2, 32, false, 0, complain_overflow_bitfield, + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_386_GOTOFF", - true, 0xffffffff, 0xffffffff, false), - HOWTO(R_386_GOTPC, 0, 2, 32, true, 0, complain_overflow_bitfield, + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_386_GOTPC", - true, 0xffffffff, 0xffffffff, true), + TRUE, 0xffffffff, 0xffffffff, TRUE), /* We have a gap in the reloc numbers here. R_386_standard counts the number up to this point, and R_386_ext_offset is the value to subtract from a reloc type of R_386_16 thru R_386_PC8 to form an index into this table. */ -#define R_386_standard ((unsigned int) R_386_GOTPC + 1) -#define R_386_ext_offset ((unsigned int) R_386_16 - R_386_standard) - - /* The remaining relocs are a GNU extension. */ - HOWTO(R_386_16, 0, 1, 16, false, 0, complain_overflow_bitfield, +#define R_386_standard (R_386_GOTPC + 1) +#define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard) + + /* These relocs are a GNU extension. */ + HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_386_TLS_TPOFF", + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_386_TLS_IE", + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_386_TLS_GOTIE", + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_386_TLS_LE", + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_386_TLS_GD", + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_386_TLS_LDM", + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_386_16", - true, 0xffff, 0xffff, false), - HOWTO(R_386_PC16, 0, 1, 16, true, 0, complain_overflow_bitfield, + TRUE, 0xffff, 0xffff, FALSE), + HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_386_PC16", - true, 0xffff, 0xffff, true), - HOWTO(R_386_8, 0, 0, 8, false, 0, complain_overflow_bitfield, + TRUE, 0xffff, 0xffff, TRUE), + HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_386_8", - true, 0xff, 0xff, false), - HOWTO(R_386_PC8, 0, 0, 8, true, 0, complain_overflow_signed, + TRUE, 0xff, 0xff, FALSE), + HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_386_PC8", - true, 0xff, 0xff, true), + TRUE, 0xff, 0xff, TRUE), + +#define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset) +#define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext) + /* These are common with Solaris TLS implementation. */ + HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_386_TLS_LDO_32", + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_386_TLS_IE_32", + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_386_TLS_LE_32", + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32", + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32", + TRUE, 0xffffffff, 0xffffffff, FALSE), + HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_386_TLS_TPOFF32", + TRUE, 0xffffffff, 0xffffffff, FALSE), /* Another gap. */ -#define R_386_ext ((unsigned int) R_386_PC8 + 1 - R_386_ext_offset) -#define R_386_vt_offset ((unsigned int) R_386_GNU_VTINHERIT - R_386_ext) +#define R_386_tls (R_386_TLS_TPOFF32 + 1 - R_386_tls_offset) +#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_tls) /* GNU extension to record C++ vtable hierarchy. */ HOWTO (R_386_GNU_VTINHERIT, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 0, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ NULL, /* special_function */ "R_386_GNU_VTINHERIT", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false), + FALSE), /* pcrel_offset */ /* GNU extension to record C++ vtable member usage. */ HOWTO (R_386_GNU_VTENTRY, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 0, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont, /* complain_on_overflow */ _bfd_elf_rel_vtable_reloc_fn, /* special_function */ "R_386_GNU_VTENTRY", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false) + FALSE) /* pcrel_offset */ -#define R_386_vt ((unsigned int) R_386_GNU_VTENTRY + 1 - R_386_vt_offset) +#define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset) }; #ifdef DEBUG_GEN_RELOC -#define TRACE(str) fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str) +#define TRACE(str) \ + fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str) #else #define TRACE(str) #endif static reloc_howto_type * -elf_i386_reloc_type_lookup (abfd, code) - bfd *abfd ATTRIBUTE_UNUSED; - bfd_reloc_code_real_type code; +elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, + bfd_reloc_code_real_type code) { switch (code) { case BFD_RELOC_NONE: TRACE ("BFD_RELOC_NONE"); - return &elf_howto_table[(unsigned int) R_386_NONE ]; + return &elf_howto_table[R_386_NONE]; case BFD_RELOC_32: TRACE ("BFD_RELOC_32"); - return &elf_howto_table[(unsigned int) R_386_32 ]; + return &elf_howto_table[R_386_32]; case BFD_RELOC_CTOR: TRACE ("BFD_RELOC_CTOR"); - return &elf_howto_table[(unsigned int) R_386_32 ]; + return &elf_howto_table[R_386_32]; case BFD_RELOC_32_PCREL: TRACE ("BFD_RELOC_PC32"); - return &elf_howto_table[(unsigned int) R_386_PC32 ]; + return &elf_howto_table[R_386_PC32]; case BFD_RELOC_386_GOT32: TRACE ("BFD_RELOC_386_GOT32"); - return &elf_howto_table[(unsigned int) R_386_GOT32 ]; + return &elf_howto_table[R_386_GOT32]; case BFD_RELOC_386_PLT32: TRACE ("BFD_RELOC_386_PLT32"); - return &elf_howto_table[(unsigned int) R_386_PLT32 ]; + return &elf_howto_table[R_386_PLT32]; case BFD_RELOC_386_COPY: TRACE ("BFD_RELOC_386_COPY"); - return &elf_howto_table[(unsigned int) R_386_COPY ]; + return &elf_howto_table[R_386_COPY]; case BFD_RELOC_386_GLOB_DAT: TRACE ("BFD_RELOC_386_GLOB_DAT"); - return &elf_howto_table[(unsigned int) R_386_GLOB_DAT ]; + return &elf_howto_table[R_386_GLOB_DAT]; case BFD_RELOC_386_JUMP_SLOT: TRACE ("BFD_RELOC_386_JUMP_SLOT"); - return &elf_howto_table[(unsigned int) R_386_JUMP_SLOT ]; + return &elf_howto_table[R_386_JUMP_SLOT]; case BFD_RELOC_386_RELATIVE: TRACE ("BFD_RELOC_386_RELATIVE"); - return &elf_howto_table[(unsigned int) R_386_RELATIVE ]; + return &elf_howto_table[R_386_RELATIVE]; case BFD_RELOC_386_GOTOFF: TRACE ("BFD_RELOC_386_GOTOFF"); - return &elf_howto_table[(unsigned int) R_386_GOTOFF ]; + return &elf_howto_table[R_386_GOTOFF]; case BFD_RELOC_386_GOTPC: TRACE ("BFD_RELOC_386_GOTPC"); - return &elf_howto_table[(unsigned int) R_386_GOTPC ]; + return &elf_howto_table[R_386_GOTPC]; + + /* These relocs are a GNU extension. */ + case BFD_RELOC_386_TLS_TPOFF: + TRACE ("BFD_RELOC_386_TLS_TPOFF"); + return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset]; + + case BFD_RELOC_386_TLS_IE: + TRACE ("BFD_RELOC_386_TLS_IE"); + return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset]; + + case BFD_RELOC_386_TLS_GOTIE: + TRACE ("BFD_RELOC_386_TLS_GOTIE"); + return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset]; + + case BFD_RELOC_386_TLS_LE: + TRACE ("BFD_RELOC_386_TLS_LE"); + return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset]; + + case BFD_RELOC_386_TLS_GD: + TRACE ("BFD_RELOC_386_TLS_GD"); + return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset]; + + case BFD_RELOC_386_TLS_LDM: + TRACE ("BFD_RELOC_386_TLS_LDM"); + return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset]; - /* The remaining relocs are a GNU extension. */ case BFD_RELOC_16: TRACE ("BFD_RELOC_16"); - return &elf_howto_table[(unsigned int) R_386_16 - R_386_ext_offset]; + return &elf_howto_table[R_386_16 - R_386_ext_offset]; case BFD_RELOC_16_PCREL: TRACE ("BFD_RELOC_16_PCREL"); - return &elf_howto_table[(unsigned int) R_386_PC16 - R_386_ext_offset]; + return &elf_howto_table[R_386_PC16 - R_386_ext_offset]; case BFD_RELOC_8: TRACE ("BFD_RELOC_8"); - return &elf_howto_table[(unsigned int) R_386_8 - R_386_ext_offset]; + return &elf_howto_table[R_386_8 - R_386_ext_offset]; case BFD_RELOC_8_PCREL: TRACE ("BFD_RELOC_8_PCREL"); - return &elf_howto_table[(unsigned int) R_386_PC8 - R_386_ext_offset]; + return &elf_howto_table[R_386_PC8 - R_386_ext_offset]; + + /* Common with Sun TLS implementation. */ + case BFD_RELOC_386_TLS_LDO_32: + TRACE ("BFD_RELOC_386_TLS_LDO_32"); + return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset]; + + case BFD_RELOC_386_TLS_IE_32: + TRACE ("BFD_RELOC_386_TLS_IE_32"); + return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset]; + + case BFD_RELOC_386_TLS_LE_32: + TRACE ("BFD_RELOC_386_TLS_LE_32"); + return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset]; + + case BFD_RELOC_386_TLS_DTPMOD32: + TRACE ("BFD_RELOC_386_TLS_DTPMOD32"); + return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset]; + + case BFD_RELOC_386_TLS_DTPOFF32: + TRACE ("BFD_RELOC_386_TLS_DTPOFF32"); + return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset]; + + case BFD_RELOC_386_TLS_TPOFF32: + TRACE ("BFD_RELOC_386_TLS_TPOFF32"); + return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset]; case BFD_RELOC_VTABLE_INHERIT: TRACE ("BFD_RELOC_VTABLE_INHERIT"); - return &elf_howto_table[(unsigned int) R_386_GNU_VTINHERIT - - R_386_vt_offset]; + return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset]; case BFD_RELOC_VTABLE_ENTRY: TRACE ("BFD_RELOC_VTABLE_ENTRY"); - return &elf_howto_table[(unsigned int) R_386_GNU_VTENTRY - - R_386_vt_offset]; + return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset]; default: break; @@ -272,19 +308,9 @@ elf_i386_reloc_type_lookup (abfd, code) } static void -elf_i386_info_to_howto (abfd, cache_ptr, dst) - bfd *abfd ATTRIBUTE_UNUSED; - arelent *cache_ptr ATTRIBUTE_UNUSED; - Elf32_Internal_Rela *dst ATTRIBUTE_UNUSED; -{ - abort (); -} - -static void -elf_i386_info_to_howto_rel (abfd, cache_ptr, dst) - bfd *abfd ATTRIBUTE_UNUSED; - arelent *cache_ptr; - Elf32_Internal_Rel *dst; +elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, + arelent *cache_ptr, + Elf_Internal_Rela *dst) { unsigned int r_type = ELF32_R_TYPE (dst->r_info); unsigned int indx; @@ -292,12 +318,14 @@ elf_i386_info_to_howto_rel (abfd, cache_ptr, dst) if ((indx = r_type) >= R_386_standard && ((indx = r_type - R_386_ext_offset) - R_386_standard >= R_386_ext - R_386_standard) - && ((indx = r_type - R_386_vt_offset) - R_386_ext - >= R_386_vt - R_386_ext)) + && ((indx = r_type - R_386_tls_offset) - R_386_ext + >= R_386_tls - R_386_ext) + && ((indx = r_type - R_386_vt_offset) - R_386_tls + >= R_386_vt - R_386_tls)) { - (*_bfd_error_handler) (_("%s: invalid relocation type %d"), - bfd_archive_filename (abfd), (int) r_type); - indx = (unsigned int) R_386_NONE; + (*_bfd_error_handler) (_("%B: invalid relocation type %d"), + abfd, (int) r_type); + indx = R_386_NONE; } cache_ptr->howto = &elf_howto_table[indx]; } @@ -308,71 +336,100 @@ elf_i386_info_to_howto_rel (abfd, cache_ptr, dst) If so, we should move the .X recognition into _bfd_elf_is_local_label_name. */ -static boolean -elf_i386_is_local_label_name (abfd, name) - bfd *abfd; - const char *name; +static bfd_boolean +elf_i386_is_local_label_name (bfd *abfd, const char *name) { if (name[0] == '.' && name[1] == 'X') - return true; + return TRUE; return _bfd_elf_is_local_label_name (abfd, name); } /* Support for core dump NOTE sections. */ -static boolean -elf_i386_grok_prstatus (abfd, note) - bfd *abfd; - Elf_Internal_Note *note; + +static bfd_boolean +elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) { int offset; - size_t raw_size; + size_t size; - switch (note->descsz) + if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) { - default: - return false; + int pr_version = bfd_get_32 (abfd, note->descdata); - case 144: /* Linux/i386 */ - /* pr_cursig */ - elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); + if (pr_version != 1) + return FALSE; - /* pr_pid */ - elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); + /* pr_cursig */ + elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20); - /* pr_reg */ - offset = 72; - raw_size = 68; + /* pr_pid */ + elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); - break; + /* pr_reg */ + offset = 28; + size = bfd_get_32 (abfd, note->descdata + 8); + } + else + { + switch (note->descsz) + { + default: + return FALSE; + + case 144: /* Linux/i386 */ + /* pr_cursig */ + elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); + + /* pr_pid */ + elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); + + /* pr_reg */ + offset = 72; + size = 68; + + break; + } } /* Make a ".reg/999" section. */ return _bfd_elfcore_make_pseudosection (abfd, ".reg", - raw_size, note->descpos + offset); + size, note->descpos + offset); } -static boolean -elf_i386_grok_psinfo (abfd, note) - bfd *abfd; - Elf_Internal_Note *note; +static bfd_boolean +elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) { - switch (note->descsz) + if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0) { - default: - return false; - - case 128: /* Linux/MIPS elf_prpsinfo */ - elf_tdata (abfd)->core_program - = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); - elf_tdata (abfd)->core_command - = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); + int pr_version = bfd_get_32 (abfd, note->descdata); + + if (pr_version != 1) + return FALSE; + + elf_tdata (abfd)->core_program + = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17); + elf_tdata (abfd)->core_command + = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81); + } + else + { + switch (note->descsz) + { + default: + return FALSE; + + case 124: /* Linux/i386 elf_prpsinfo. */ + elf_tdata (abfd)->core_program + = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); + elf_tdata (abfd)->core_command + = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); + } } /* Note that for some reason, a spurious space is tacked onto the end of the args in some (at least one anyway) implementations, so strip it off if it exists. */ - { char *command = elf_tdata (abfd)->core_command; int n = strlen (command); @@ -381,7 +438,7 @@ elf_i386_grok_psinfo (abfd, note) command[n - 1] = '\0'; } - return true; + return TRUE; } /* Functions for the i386 ELF linker. @@ -403,6 +460,12 @@ elf_i386_grok_psinfo (abfd, note) #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" +/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid + copying dynamic variables from a shared lib into an app's dynbss + section, and instead use a dynamic relocation to point into the + shared lib. */ +#define ELIMINATE_COPY_RELOCS 1 + /* The size in bytes of an entry in the procedure linkage table. */ #define PLT_ENTRY_SIZE 16 @@ -481,8 +544,43 @@ struct elf_i386_link_hash_entry /* Track dynamic relocs copied for this symbol. */ struct elf_i386_dyn_relocs *dyn_relocs; + +#define GOT_UNKNOWN 0 +#define GOT_NORMAL 1 +#define GOT_TLS_GD 2 +#define GOT_TLS_IE 4 +#define GOT_TLS_IE_POS 5 +#define GOT_TLS_IE_NEG 6 +#define GOT_TLS_IE_BOTH 7 + unsigned char tls_type; }; +#define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent)) + +struct elf_i386_obj_tdata +{ + struct elf_obj_tdata root; + + /* tls_type for each local got entry. */ + char *local_got_tls_type; +}; + +#define elf_i386_tdata(abfd) \ + ((struct elf_i386_obj_tdata *) (abfd)->tdata.any) + +#define elf_i386_local_got_tls_type(abfd) \ + (elf_i386_tdata (abfd)->local_got_tls_type) + +static bfd_boolean +elf_i386_mkobject (bfd *abfd) +{ + bfd_size_type amt = sizeof (struct elf_i386_obj_tdata); + abfd->tdata.any = bfd_zalloc (abfd, amt); + if (abfd->tdata.any == NULL) + return FALSE; + return TRUE; +} + /* i386 ELF linker hash table. */ struct elf_i386_link_hash_table @@ -498,6 +596,11 @@ struct elf_i386_link_hash_table asection *sdynbss; asection *srelbss; + union { + bfd_signed_vma refcount; + bfd_vma offset; + } tls_ldm_got; + /* Small local sym to section mapping cache. */ struct sym_sec_cache sym_sec; }; @@ -510,10 +613,9 @@ struct elf_i386_link_hash_table /* Create an entry in an i386 ELF linker hash table. */ static struct bfd_hash_entry * -link_hash_newfunc (entry, table, string) - struct bfd_hash_entry *entry; - struct bfd_hash_table *table; - const char *string; +link_hash_newfunc (struct bfd_hash_entry *entry, + struct bfd_hash_table *table, + const char *string) { /* Allocate the structure if it has not already been allocated by a subclass. */ @@ -533,6 +635,7 @@ link_hash_newfunc (entry, table, string) eh = (struct elf_i386_link_hash_entry *) entry; eh->dyn_relocs = NULL; + eh->tls_type = GOT_UNKNOWN; } return entry; @@ -541,19 +644,18 @@ link_hash_newfunc (entry, table, string) /* Create an i386 ELF linker hash table. */ static struct bfd_link_hash_table * -elf_i386_link_hash_table_create (abfd) - bfd *abfd; +elf_i386_link_hash_table_create (bfd *abfd) { struct elf_i386_link_hash_table *ret; bfd_size_type amt = sizeof (struct elf_i386_link_hash_table); - ret = (struct elf_i386_link_hash_table *) bfd_alloc (abfd, amt); + ret = bfd_malloc (amt); if (ret == NULL) return NULL; if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc)) { - bfd_release (abfd, ret); + free (ret); return NULL; } @@ -564,6 +666,7 @@ elf_i386_link_hash_table_create (abfd) ret->srelplt = NULL; ret->sdynbss = NULL; ret->srelbss = NULL; + ret->tls_ldm_got.refcount = 0; ret->sym_sec.abfd = NULL; return &ret->elf.root; @@ -572,15 +675,13 @@ elf_i386_link_hash_table_create (abfd) /* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up shortcuts to them in our hash table. */ -static boolean -create_got_section (dynobj, info) - bfd *dynobj; - struct bfd_link_info *info; +static bfd_boolean +create_got_section (bfd *dynobj, struct bfd_link_info *info) { struct elf_i386_link_hash_table *htab; if (! _bfd_elf_create_got_section (dynobj, info)) - return false; + return FALSE; htab = elf_i386_hash_table (info); htab->sgot = bfd_get_section_by_name (dynobj, ".got"); @@ -595,27 +696,25 @@ create_got_section (dynobj, info) | SEC_IN_MEMORY | SEC_LINKER_CREATED | SEC_READONLY)) || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) - return false; - return true; + return FALSE; + return TRUE; } /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and .rel.bss sections in DYNOBJ, and set up shortcuts to them in our hash table. */ -static boolean -elf_i386_create_dynamic_sections (dynobj, info) - bfd *dynobj; - struct bfd_link_info *info; +static bfd_boolean +elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) { struct elf_i386_link_hash_table *htab; htab = elf_i386_hash_table (info); if (!htab->sgot && !create_got_section (dynobj, info)) - return false; + return FALSE; if (!_bfd_elf_create_dynamic_sections (dynobj, info)) - return false; + return FALSE; htab->splt = bfd_get_section_by_name (dynobj, ".plt"); htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt"); @@ -627,14 +726,15 @@ elf_i386_create_dynamic_sections (dynobj, info) || (!info->shared && !htab->srelbss)) abort (); - return true; + return TRUE; } /* Copy the extra info we tack onto an elf_link_hash_entry. */ static void -elf_i386_copy_indirect_symbol (dir, ind) - struct elf_link_hash_entry *dir, *ind; +elf_i386_copy_indirect_symbol (const struct elf_backend_data *bed, + struct elf_link_hash_entry *dir, + struct elf_link_hash_entry *ind) { struct elf_i386_link_hash_entry *edir, *eind; @@ -675,19 +775,63 @@ elf_i386_copy_indirect_symbol (dir, ind) eind->dyn_relocs = NULL; } - _bfd_elf_link_hash_copy_indirect (dir, ind); + if (ind->root.type == bfd_link_hash_indirect + && dir->got.refcount <= 0) + { + edir->tls_type = eind->tls_type; + eind->tls_type = GOT_UNKNOWN; + } + + if (ELIMINATE_COPY_RELOCS + && ind->root.type != bfd_link_hash_indirect + && (dir->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0) + /* If called to transfer flags for a weakdef during processing + of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF. + We clear it ourselves for ELIMINATE_COPY_RELOCS. */ + dir->elf_link_hash_flags |= + (ind->elf_link_hash_flags & (ELF_LINK_HASH_REF_DYNAMIC + | ELF_LINK_HASH_REF_REGULAR + | ELF_LINK_HASH_REF_REGULAR_NONWEAK + | ELF_LINK_HASH_NEEDS_PLT + | ELF_LINK_POINTER_EQUALITY_NEEDED)); + else + _bfd_elf_link_hash_copy_indirect (bed, dir, ind); +} + +static int +elf_i386_tls_transition (struct bfd_link_info *info, int r_type, int is_local) +{ + if (info->shared) + return r_type; + + switch (r_type) + { + case R_386_TLS_GD: + case R_386_TLS_IE_32: + if (is_local) + return R_386_TLS_LE_32; + return R_386_TLS_IE_32; + case R_386_TLS_IE: + case R_386_TLS_GOTIE: + if (is_local) + return R_386_TLS_LE_32; + return r_type; + case R_386_TLS_LDM: + return R_386_TLS_LE_32; + } + + return r_type; } /* Look through the relocs for a section during the first phase, and calculate needed space in the global offset table, procedure linkage table, and dynamic reloc sections. */ -static boolean -elf_i386_check_relocs (abfd, info, sec, relocs) - bfd *abfd; - struct bfd_link_info *info; - asection *sec; - const Elf_Internal_Rela *relocs; +static bfd_boolean +elf_i386_check_relocs (bfd *abfd, + struct bfd_link_info *info, + asection *sec, + const Elf_Internal_Rela *relocs) { struct elf_i386_link_hash_table *htab; Elf_Internal_Shdr *symtab_hdr; @@ -696,8 +840,8 @@ elf_i386_check_relocs (abfd, info, sec, relocs) const Elf_Internal_Rela *rel_end; asection *sreloc; - if (info->relocateable) - return true; + if (info->relocatable) + return TRUE; htab = elf_i386_hash_table (info); symtab_hdr = &elf_tdata (abfd)->symtab_hdr; @@ -708,17 +852,19 @@ elf_i386_check_relocs (abfd, info, sec, relocs) rel_end = relocs + sec->reloc_count; for (rel = relocs; rel < rel_end; rel++) { + unsigned int r_type; unsigned long r_symndx; struct elf_link_hash_entry *h; r_symndx = ELF32_R_SYM (rel->r_info); + r_type = ELF32_R_TYPE (rel->r_info); if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) { - (*_bfd_error_handler) (_("%s: bad symbol index: %d"), - bfd_archive_filename (abfd), + (*_bfd_error_handler) (_("%B: bad symbol index: %d"), + abfd, r_symndx); - return false; + return FALSE; } if (r_symndx < symtab_hdr->sh_info) @@ -726,46 +872,13 @@ elf_i386_check_relocs (abfd, info, sec, relocs) else h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_386_GOT32: - /* This symbol requires a global offset table entry. */ - if (h != NULL) - { - h->got.refcount += 1; - } - else - { - bfd_signed_vma *local_got_refcounts; - - /* This is a global offset table entry for a local symbol. */ - local_got_refcounts = elf_local_got_refcounts (abfd); - if (local_got_refcounts == NULL) - { - bfd_size_type size; - - size = symtab_hdr->sh_info; - size *= sizeof (bfd_signed_vma); - local_got_refcounts = ((bfd_signed_vma *) - bfd_zalloc (abfd, size)); - if (local_got_refcounts == NULL) - return false; - elf_local_got_refcounts (abfd) = local_got_refcounts; - } - local_got_refcounts[r_symndx] += 1; - } - /* Fall through */ + r_type = elf_i386_tls_transition (info, r_type, h == NULL); - case R_386_GOTOFF: - case R_386_GOTPC: - if (htab->sgot == NULL) - { - if (htab->elf.dynobj == NULL) - htab->elf.dynobj = abfd; - if (!create_got_section (htab->elf.dynobj, info)) - return false; - } - break; + switch (r_type) + { + case R_386_TLS_LDM: + htab->tls_ldm_got.refcount += 1; + goto create_got; case R_386_PLT32: /* This symbol requires a procedure linkage table entry. We @@ -784,6 +897,117 @@ elf_i386_check_relocs (abfd, info, sec, relocs) h->plt.refcount += 1; break; + case R_386_TLS_IE_32: + case R_386_TLS_IE: + case R_386_TLS_GOTIE: + if (info->shared) + info->flags |= DF_STATIC_TLS; + /* Fall through */ + + case R_386_GOT32: + case R_386_TLS_GD: + /* This symbol requires a global offset table entry. */ + { + int tls_type, old_tls_type; + + switch (r_type) + { + default: + case R_386_GOT32: tls_type = GOT_NORMAL; break; + case R_386_TLS_GD: tls_type = GOT_TLS_GD; break; + case R_386_TLS_IE_32: + if (ELF32_R_TYPE (rel->r_info) == r_type) + tls_type = GOT_TLS_IE_NEG; + else + /* If this is a GD->IE transition, we may use either of + R_386_TLS_TPOFF and R_386_TLS_TPOFF32. */ + tls_type = GOT_TLS_IE; + break; + case R_386_TLS_IE: + case R_386_TLS_GOTIE: + tls_type = GOT_TLS_IE_POS; break; + } + + if (h != NULL) + { + h->got.refcount += 1; + old_tls_type = elf_i386_hash_entry(h)->tls_type; + } + else + { + bfd_signed_vma *local_got_refcounts; + + /* This is a global offset table entry for a local symbol. */ + local_got_refcounts = elf_local_got_refcounts (abfd); + if (local_got_refcounts == NULL) + { + bfd_size_type size; + + size = symtab_hdr->sh_info; + size *= (sizeof (bfd_signed_vma) + sizeof(char)); + local_got_refcounts = bfd_zalloc (abfd, size); + if (local_got_refcounts == NULL) + return FALSE; + elf_local_got_refcounts (abfd) = local_got_refcounts; + elf_i386_local_got_tls_type (abfd) + = (char *) (local_got_refcounts + symtab_hdr->sh_info); + } + local_got_refcounts[r_symndx] += 1; + old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx]; + } + + if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE)) + tls_type |= old_tls_type; + /* If a TLS symbol is accessed using IE at least once, + there is no point to use dynamic model for it. */ + else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN + && (old_tls_type != GOT_TLS_GD + || (tls_type & GOT_TLS_IE) == 0)) + { + if ((old_tls_type & GOT_TLS_IE) && tls_type == GOT_TLS_GD) + tls_type = old_tls_type; + else + { + (*_bfd_error_handler) + (_("%B: `%s' accessed both as normal and " + "thread local symbol"), + abfd, + h ? h->root.root.string : ""); + return FALSE; + } + } + + if (old_tls_type != tls_type) + { + if (h != NULL) + elf_i386_hash_entry (h)->tls_type = tls_type; + else + elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type; + } + } + /* Fall through */ + + case R_386_GOTOFF: + case R_386_GOTPC: + create_got: + if (htab->sgot == NULL) + { + if (htab->elf.dynobj == NULL) + htab->elf.dynobj = abfd; + if (!create_got_section (htab->elf.dynobj, info)) + return FALSE; + } + if (r_type != R_386_TLS_IE) + break; + /* Fall through */ + + case R_386_TLS_LE_32: + case R_386_TLS_LE: + if (!info->shared) + break; + info->flags |= DF_STATIC_TLS; + /* Fall through */ + case R_386_32: case R_386_PC32: if (h != NULL && !info->shared) @@ -799,6 +1023,8 @@ elf_i386_check_relocs (abfd, info, sec, relocs) /* We may need a .plt entry if the function this reloc refers to is in a shared lib. */ h->plt.refcount += 1; + if (r_type != R_386_PC32) + h->elf_link_hash_flags |= ELF_LINK_POINTER_EQUALITY_NEEDED; } /* If we are creating a shared library, and this is a reloc @@ -824,13 +1050,14 @@ elf_i386_check_relocs (abfd, info, sec, relocs) symbol. */ if ((info->shared && (sec->flags & SEC_ALLOC) != 0 - && (ELF32_R_TYPE (rel->r_info) != R_386_PC32 + && (r_type != R_386_PC32 || (h != NULL && (! info->symbolic || h->root.type == bfd_link_hash_defweak || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)))) - || (!info->shared + || (ELIMINATE_COPY_RELOCS + && !info->shared && (sec->flags & SEC_ALLOC) != 0 && h != NULL && (h->root.type == bfd_link_hash_defweak @@ -847,21 +1074,20 @@ elf_i386_check_relocs (abfd, info, sec, relocs) { const char *name; bfd *dynobj; + unsigned int strndx = elf_elfheader (abfd)->e_shstrndx; + unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name; - name = (bfd_elf_string_from_elf_section - (abfd, - elf_elfheader (abfd)->e_shstrndx, - elf_section_data (sec)->rel_hdr.sh_name)); + name = bfd_elf_string_from_elf_section (abfd, strndx, shnam); if (name == NULL) - return false; + return FALSE; if (strncmp (name, ".rel", 4) != 0 || strcmp (bfd_get_section_name (abfd, sec), name + 4) != 0) { (*_bfd_error_handler) - (_("%s: bad relocation section name `%s\'"), - bfd_archive_filename (abfd), name); + (_("%B: bad relocation section name `%s\'"), + abfd, name); } if (htab->elf.dynobj == NULL) @@ -881,7 +1107,7 @@ elf_i386_check_relocs (abfd, info, sec, relocs) if (sreloc == NULL || ! bfd_set_section_flags (dynobj, sreloc, flags) || ! bfd_set_section_alignment (dynobj, sreloc, 2)) - return false; + return FALSE; } elf_section_data (sec)->sreloc = sreloc; } @@ -902,7 +1128,7 @@ elf_i386_check_relocs (abfd, info, sec, relocs) s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, r_symndx); if (s == NULL) - return false; + return FALSE; head = ((struct elf_i386_dyn_relocs **) &elf_section_data (s)->local_dynrel); @@ -912,10 +1138,9 @@ elf_i386_check_relocs (abfd, info, sec, relocs) if (p == NULL || p->sec != sec) { bfd_size_type amt = sizeof *p; - p = ((struct elf_i386_dyn_relocs *) - bfd_alloc (htab->elf.dynobj, amt)); + p = bfd_alloc (htab->elf.dynobj, amt); if (p == NULL) - return false; + return FALSE; p->next = *head; *head = p; p->sec = sec; @@ -924,7 +1149,7 @@ elf_i386_check_relocs (abfd, info, sec, relocs) } p->count += 1; - if (ELF32_R_TYPE (rel->r_info) == R_386_PC32) + if (r_type == R_386_PC32) p->pc_count += 1; } break; @@ -932,15 +1157,15 @@ elf_i386_check_relocs (abfd, info, sec, relocs) /* This relocation describes the C++ object vtable hierarchy. Reconstruct it for later use during GC. */ case R_386_GNU_VTINHERIT: - if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) - return false; + if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) + return FALSE; break; /* This relocation describes which C++ vtable entries are actually used. Record for later use during GC. */ case R_386_GNU_VTENTRY: - if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset)) - return false; + if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) + return FALSE; break; default: @@ -948,19 +1173,18 @@ elf_i386_check_relocs (abfd, info, sec, relocs) } } - return true; + return TRUE; } /* Return the section that should be marked against GC for a given relocation. */ static asection * -elf_i386_gc_mark_hook (abfd, info, rel, h, sym) - bfd *abfd; - struct bfd_link_info *info ATTRIBUTE_UNUSED; - Elf_Internal_Rela *rel; - struct elf_link_hash_entry *h; - Elf_Internal_Sym *sym; +elf_i386_gc_mark_hook (asection *sec, + struct bfd_link_info *info ATTRIBUTE_UNUSED, + Elf_Internal_Rela *rel, + struct elf_link_hash_entry *h, + Elf_Internal_Sym *sym) { if (h != NULL) { @@ -986,34 +1210,23 @@ elf_i386_gc_mark_hook (abfd, info, rel, h, sym) } } else - { - if (!(elf_bad_symtab (abfd) - && ELF_ST_BIND (sym->st_info) != STB_LOCAL) - && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) - && sym->st_shndx != SHN_COMMON)) - { - return bfd_section_from_elf_index (abfd, sym->st_shndx); - } - } + return bfd_section_from_elf_index (sec->owner, sym->st_shndx); return NULL; } /* Update the got entry reference counts for the section being removed. */ -static boolean -elf_i386_gc_sweep_hook (abfd, info, sec, relocs) - bfd *abfd; - struct bfd_link_info *info; - asection *sec; - const Elf_Internal_Rela *relocs; +static bfd_boolean +elf_i386_gc_sweep_hook (bfd *abfd, + struct bfd_link_info *info, + asection *sec, + const Elf_Internal_Rela *relocs) { Elf_Internal_Shdr *symtab_hdr; struct elf_link_hash_entry **sym_hashes; bfd_signed_vma *local_got_refcounts; const Elf_Internal_Rela *rel, *relend; - unsigned long r_symndx; - struct elf_link_hash_entry *h; elf_section_data (sec)->local_dynrel = NULL; @@ -1023,69 +1236,76 @@ elf_i386_gc_sweep_hook (abfd, info, sec, relocs) relend = relocs + sec->reloc_count; for (rel = relocs; rel < relend; rel++) - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_386_GOT32: - case R_386_GOTOFF: - case R_386_GOTPC: - r_symndx = ELF32_R_SYM (rel->r_info); - if (r_symndx >= symtab_hdr->sh_info) - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - if (h->got.refcount > 0) - h->got.refcount -= 1; - } - else if (local_got_refcounts != NULL) - { - if (local_got_refcounts[r_symndx] > 0) - local_got_refcounts[r_symndx] -= 1; - } - break; + { + unsigned long r_symndx; + unsigned int r_type; + struct elf_link_hash_entry *h = NULL; - case R_386_32: - case R_386_PC32: - r_symndx = ELF32_R_SYM (rel->r_info); - if (r_symndx >= symtab_hdr->sh_info) - { - struct elf_i386_link_hash_entry *eh; - struct elf_i386_dyn_relocs **pp; - struct elf_i386_dyn_relocs *p; + r_symndx = ELF32_R_SYM (rel->r_info); + if (r_symndx >= symtab_hdr->sh_info) + { + struct elf_i386_link_hash_entry *eh; + struct elf_i386_dyn_relocs **pp; + struct elf_i386_dyn_relocs *p; - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + eh = (struct elf_i386_link_hash_entry *) h; - if (!info->shared && h->plt.refcount > 0) - h->plt.refcount -= 1; + for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) + if (p->sec == sec) + { + /* Everything must go for SEC. */ + *pp = p->next; + break; + } + } - eh = (struct elf_i386_link_hash_entry *) h; + r_type = ELF32_R_TYPE (rel->r_info); + r_type = elf_i386_tls_transition (info, r_type, h != NULL); + switch (r_type) + { + case R_386_TLS_LDM: + if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0) + elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1; + break; - for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) - if (p->sec == sec) - { - if (ELF32_R_TYPE (rel->r_info) == R_386_PC32) - p->pc_count -= 1; - p->count -= 1; - if (p->count == 0) - *pp = p->next; - break; - } - } - break; + case R_386_TLS_GD: + case R_386_TLS_IE_32: + case R_386_TLS_IE: + case R_386_TLS_GOTIE: + case R_386_GOT32: + if (h != NULL) + { + if (h->got.refcount > 0) + h->got.refcount -= 1; + } + else if (local_got_refcounts != NULL) + { + if (local_got_refcounts[r_symndx] > 0) + local_got_refcounts[r_symndx] -= 1; + } + break; - case R_386_PLT32: - r_symndx = ELF32_R_SYM (rel->r_info); - if (r_symndx >= symtab_hdr->sh_info) - { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - if (h->plt.refcount > 0) - h->plt.refcount -= 1; - } - break; + case R_386_32: + case R_386_PC32: + if (info->shared) + break; + /* Fall through */ - default: - break; - } + case R_386_PLT32: + if (h != NULL) + { + if (h->plt.refcount > 0) + h->plt.refcount -= 1; + } + break; - return true; + default: + break; + } + } + + return TRUE; } /* Adjust a symbol defined by a dynamic object and referenced by a @@ -1094,14 +1314,11 @@ elf_i386_gc_sweep_hook (abfd, info, sec, relocs) change the definition to something the rest of the link can understand. */ -static boolean -elf_i386_adjust_dynamic_symbol (info, h) - struct bfd_link_info *info; - struct elf_link_hash_entry *h; +static bfd_boolean +elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info, + struct elf_link_hash_entry *h) { struct elf_i386_link_hash_table *htab; - struct elf_i386_link_hash_entry * eh; - struct elf_i386_dyn_relocs *p; asection *s; unsigned int power_of_two; @@ -1112,9 +1329,9 @@ elf_i386_adjust_dynamic_symbol (info, h) || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) { if (h->plt.refcount <= 0 - || (! info->shared - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 - && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)) + || SYMBOL_CALLS_LOCAL (info, h) + || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT + && h->root.type == bfd_link_hash_undefweak)) { /* This case can occur if we saw a PLT32 reloc in an input file, but the symbol was never referred to by a dynamic @@ -1125,7 +1342,7 @@ elf_i386_adjust_dynamic_symbol (info, h) h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; } - return true; + return TRUE; } else /* It's possible that we incorrectly decided a .plt reloc was @@ -1144,7 +1361,11 @@ elf_i386_adjust_dynamic_symbol (info, h) || h->weakdef->root.type == bfd_link_hash_defweak); h->root.u.def.section = h->weakdef->root.u.def.section; h->root.u.def.value = h->weakdef->root.u.def.value; - return true; + if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) + h->elf_link_hash_flags + = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF) + | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF)); + return TRUE; } /* This is a reference to a symbol defined by a dynamic object which @@ -1155,34 +1376,40 @@ elf_i386_adjust_dynamic_symbol (info, h) For such cases we need not do anything here; the relocations will be handled correctly by relocate_section. */ if (info->shared) - return true; + return TRUE; /* If there are no references to this symbol that do not use the GOT, we don't need to generate a copy reloc. */ if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) - return true; + return TRUE; /* If -z nocopyreloc was given, we won't generate them either. */ if (info->nocopyreloc) { h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; - return true; + return TRUE; } - eh = (struct elf_i386_link_hash_entry *) h; - for (p = eh->dyn_relocs; p != NULL; p = p->next) + if (ELIMINATE_COPY_RELOCS) { - s = p->sec->output_section; - if (s != NULL && (s->flags & SEC_READONLY) != 0) - break; - } + struct elf_i386_link_hash_entry * eh; + struct elf_i386_dyn_relocs *p; - /* If we didn't find any dynamic relocs in read-only sections, then - we'll be keeping the dynamic relocs and avoiding the copy reloc. */ - if (p == NULL) - { - h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; - return true; + eh = (struct elf_i386_link_hash_entry *) h; + for (p = eh->dyn_relocs; p != NULL; p = p->next) + { + s = p->sec->output_section; + if (s != NULL && (s->flags & SEC_READONLY) != 0) + break; + } + + /* If we didn't find any dynamic relocs in read-only sections, then + we'll be keeping the dynamic relocs and avoiding the copy reloc. */ + if (p == NULL) + { + h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; + return TRUE; + } } /* We must allocate the symbol in our .dynbss section, which will @@ -1202,7 +1429,7 @@ elf_i386_adjust_dynamic_symbol (info, h) runtime process image. */ if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) { - htab->srelbss->_raw_size += sizeof (Elf32_External_Rel); + htab->srelbss->size += sizeof (Elf32_External_Rel); h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; } @@ -1214,50 +1441,42 @@ elf_i386_adjust_dynamic_symbol (info, h) /* Apply the required alignment. */ s = htab->sdynbss; - s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two)); + s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) { if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) - return false; + return FALSE; } /* Define the symbol as being at this point in the section. */ h->root.u.def.section = s; - h->root.u.def.value = s->_raw_size; + h->root.u.def.value = s->size; /* Increment the section size to make room for the symbol. */ - s->_raw_size += h->size; + s->size += h->size; - return true; + return TRUE; } -/* This is the condition under which elf_i386_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 elf_i386_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)) - /* Allocate space in .plt, .got and associated reloc sections for dynamic relocs. */ -static boolean -allocate_dynrelocs (h, inf) - struct elf_link_hash_entry *h; - PTR inf; +static bfd_boolean +allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) { struct bfd_link_info *info; struct elf_i386_link_hash_table *htab; struct elf_i386_link_hash_entry *eh; struct elf_i386_dyn_relocs *p; - if (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - return true; + if (h->root.type == bfd_link_hash_indirect) + return TRUE; + + if (h->root.type == bfd_link_hash_warning) + /* When warning symbols are created, they **replace** the "real" + entry in the hash table, thus we never get to see the real + symbol in a hash traversal. So look at it now. */ + h = (struct elf_link_hash_entry *) h->root.u.i.link; info = (struct bfd_link_info *) inf; htab = elf_i386_hash_table (info); @@ -1270,20 +1489,21 @@ allocate_dynrelocs (h, inf) if (h->dynindx == -1 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) { - if (! bfd_elf32_link_record_dynamic_symbol (info, h)) - return false; + if (! bfd_elf_link_record_dynamic_symbol (info, h)) + return FALSE; } - if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h)) + if (info->shared + || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) { asection *s = htab->splt; /* If this is the first .plt entry, make room for the special first entry. */ - if (s->_raw_size == 0) - s->_raw_size += PLT_ENTRY_SIZE; + if (s->size == 0) + s->size += PLT_ENTRY_SIZE; - h->plt.offset = s->_raw_size; + h->plt.offset = s->size; /* If this symbol is not defined in a regular file, and we are not generating a shared library, then set the symbol to this @@ -1298,14 +1518,14 @@ allocate_dynrelocs (h, inf) } /* Make room for this entry. */ - s->_raw_size += PLT_ENTRY_SIZE; + s->size += PLT_ENTRY_SIZE; /* We also need to make an entry in the .got.plt section, which will be placed in the .got section by the linker script. */ - htab->sgotplt->_raw_size += 4; + htab->sgotplt->size += 4; /* We also need to make an entry in the .rel.plt section. */ - htab->srelplt->_raw_size += sizeof (Elf32_External_Rel); + htab->srelplt->size += sizeof (Elf32_External_Rel); } else { @@ -1319,33 +1539,59 @@ allocate_dynrelocs (h, inf) h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; } - if (h->got.refcount > 0) + /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary, + make it a R_386_TLS_LE_32 requiring no TLS entry. */ + if (h->got.refcount > 0 + && !info->shared + && h->dynindx == -1 + && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE)) + h->got.offset = (bfd_vma) -1; + else if (h->got.refcount > 0) { asection *s; - boolean dyn; + bfd_boolean dyn; + int tls_type = elf_i386_hash_entry(h)->tls_type; /* Make sure this symbol is output as a dynamic symbol. Undefined weak syms won't yet be marked as dynamic. */ if (h->dynindx == -1 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) { - if (! bfd_elf32_link_record_dynamic_symbol (info, h)) - return false; + if (! bfd_elf_link_record_dynamic_symbol (info, h)) + return FALSE; } s = htab->sgot; - h->got.offset = s->_raw_size; - s->_raw_size += 4; + h->got.offset = s->size; + s->size += 4; + /* R_386_TLS_GD needs 2 consecutive GOT slots. */ + if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE_BOTH) + s->size += 4; dyn = htab->elf.dynamic_sections_created; - if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)) - htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); + /* R_386_TLS_IE_32 needs one dynamic relocation, + R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation, + (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we + need two), R_386_TLS_GD needs one if local symbol and two if + global. */ + if (tls_type == GOT_TLS_IE_BOTH) + htab->srelgot->size += 2 * sizeof (Elf32_External_Rel); + else if ((tls_type == GOT_TLS_GD && h->dynindx == -1) + || (tls_type & GOT_TLS_IE)) + htab->srelgot->size += sizeof (Elf32_External_Rel); + else if (tls_type == GOT_TLS_GD) + htab->srelgot->size += 2 * sizeof (Elf32_External_Rel); + else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT + || h->root.type != bfd_link_hash_undefweak) + && (info->shared + || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) + htab->srelgot->size += sizeof (Elf32_External_Rel); } else h->got.offset = (bfd_vma) -1; eh = (struct elf_i386_link_hash_entry *) h; if (eh->dyn_relocs == NULL) - return true; + return TRUE; /* In the shared -Bsymbolic case, discard space allocated for dynamic pc-relative relocs against symbols which turn out to be @@ -1355,9 +1601,13 @@ allocate_dynrelocs (h, inf) if (info->shared) { - if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 - && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 - || info->symbolic)) + /* The only reloc that uses pc_count is R_386_PC32, which will + appear on a call or on something like ".long foo - .". We + want calls to protected symbols to resolve directly to the + function rather than going via the plt. If people want + function pointer comparisons to work as expected then they + should avoid writing assembly like ".long foo - .". */ + if (SYMBOL_CALLS_LOCAL (info, h)) { struct elf_i386_dyn_relocs **pp; @@ -1371,8 +1621,14 @@ allocate_dynrelocs (h, inf) pp = &p->next; } } + + /* Also discard relocs on undefined weak syms with non-default + visibility. */ + if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT + && h->root.type == bfd_link_hash_undefweak) + eh->dyn_relocs = NULL; } - else + else if (ELIMINATE_COPY_RELOCS) { /* For the non-shared case, discard space for relocs against symbols which turn out to need copy relocs or are not @@ -1390,8 +1646,8 @@ allocate_dynrelocs (h, inf) if (h->dynindx == -1 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) { - if (! bfd_elf32_link_record_dynamic_symbol (info, h)) - return false; + if (! bfd_elf_link_record_dynamic_symbol (info, h)) + return FALSE; } /* If that succeeded, we know we'll be keeping all the @@ -1409,22 +1665,23 @@ allocate_dynrelocs (h, inf) for (p = eh->dyn_relocs; p != NULL; p = p->next) { asection *sreloc = elf_section_data (p->sec)->sreloc; - sreloc->_raw_size += p->count * sizeof (Elf32_External_Rel); + sreloc->size += p->count * sizeof (Elf32_External_Rel); } - return true; + return TRUE; } /* Find any dynamic relocs that apply to read-only sections. */ -static boolean -readonly_dynrelocs (h, inf) - struct elf_link_hash_entry *h; - PTR inf; +static bfd_boolean +readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) { struct elf_i386_link_hash_entry *eh; struct elf_i386_dyn_relocs *p; + if (h->root.type == bfd_link_hash_warning) + h = (struct elf_link_hash_entry *) h->root.u.i.link; + eh = (struct elf_i386_link_hash_entry *) h; for (p = eh->dyn_relocs; p != NULL; p = p->next) { @@ -1437,23 +1694,22 @@ readonly_dynrelocs (h, inf) info->flags |= DF_TEXTREL; /* Not an error, just cut short the traversal. */ - return false; + return FALSE; } } - return true; + return TRUE; } /* Set the sizes of the dynamic sections. */ -static boolean -elf_i386_size_dynamic_sections (output_bfd, info) - bfd *output_bfd ATTRIBUTE_UNUSED; - struct bfd_link_info *info; +static bfd_boolean +elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, + struct bfd_link_info *info) { struct elf_i386_link_hash_table *htab; bfd *dynobj; asection *s; - boolean relocs; + bfd_boolean relocs; bfd *ibfd; htab = elf_i386_hash_table (info); @@ -1464,12 +1720,12 @@ elf_i386_size_dynamic_sections (output_bfd, info) if (htab->elf.dynamic_sections_created) { /* Set the contents of the .interp section to the interpreter. */ - if (! info->shared) + if (info->executable) { s = bfd_get_section_by_name (dynobj, ".interp"); if (s == NULL) abort (); - s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; + s->size = sizeof ELF_DYNAMIC_INTERPRETER; s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; } } @@ -1480,6 +1736,7 @@ elf_i386_size_dynamic_sections (output_bfd, info) { bfd_signed_vma *local_got; bfd_signed_vma *end_local_got; + char *local_tls_type; bfd_size_type locsymcount; Elf_Internal_Shdr *symtab_hdr; asection *srel; @@ -1504,10 +1761,12 @@ elf_i386_size_dynamic_sections (output_bfd, info) linker script /DISCARD/, so we'll be discarding the relocs too. */ } - else + else if (p->count != 0) { srel = elf_section_data (p->sec)->sreloc; - srel->_raw_size += p->count * sizeof (Elf32_External_Rel); + srel->size += p->count * sizeof (Elf32_External_Rel); + if ((p->sec->output_section->flags & SEC_READONLY) != 0) + info->flags |= DF_TEXTREL; } } } @@ -1519,29 +1778,51 @@ elf_i386_size_dynamic_sections (output_bfd, info) symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; locsymcount = symtab_hdr->sh_info; end_local_got = local_got + locsymcount; + local_tls_type = elf_i386_local_got_tls_type (ibfd); s = htab->sgot; srel = htab->srelgot; - for (; local_got < end_local_got; ++local_got) + for (; local_got < end_local_got; ++local_got, ++local_tls_type) { if (*local_got > 0) { - *local_got = s->_raw_size; - s->_raw_size += 4; - if (info->shared) - srel->_raw_size += sizeof (Elf32_External_Rel); + *local_got = s->size; + s->size += 4; + if (*local_tls_type == GOT_TLS_GD + || *local_tls_type == GOT_TLS_IE_BOTH) + s->size += 4; + if (info->shared + || *local_tls_type == GOT_TLS_GD + || (*local_tls_type & GOT_TLS_IE)) + { + if (*local_tls_type == GOT_TLS_IE_BOTH) + srel->size += 2 * sizeof (Elf32_External_Rel); + else + srel->size += sizeof (Elf32_External_Rel); + } } else *local_got = (bfd_vma) -1; } } + if (htab->tls_ldm_got.refcount > 0) + { + /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM + relocs. */ + htab->tls_ldm_got.offset = htab->sgot->size; + htab->sgot->size += 8; + htab->srelgot->size += sizeof (Elf32_External_Rel); + } + else + htab->tls_ldm_got.offset = -1; + /* Allocate global sym .plt and .got entries, and space for global sym dynamic relocs. */ elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); /* We now have determined the sizes of the various dynamic sections. Allocate memory for them. */ - relocs = false; + relocs = FALSE; for (s = dynobj->sections; s != NULL; s = s->next) { if ((s->flags & SEC_LINKER_CREATED) == 0) @@ -1556,8 +1837,8 @@ elf_i386_size_dynamic_sections (output_bfd, info) } else if (strncmp (bfd_get_section_name (dynobj, s), ".rel", 4) == 0) { - if (s->_raw_size != 0 && s != htab->srelplt) - relocs = true; + if (s->size != 0 && s != htab->srelplt) + relocs = TRUE; /* We use the reloc_count field as a counter if we need to copy relocs into the output file. */ @@ -1569,7 +1850,7 @@ elf_i386_size_dynamic_sections (output_bfd, info) continue; } - if (s->_raw_size == 0) + if (s->size == 0) { /* If we don't need this section, strip it from the output file. This is mostly to handle .rel.bss and @@ -1590,9 +1871,9 @@ elf_i386_size_dynamic_sections (output_bfd, info) section's contents are written out. This should not happen, but this way if it does, we get a R_386_NONE reloc instead of garbage. */ - s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); + s->contents = bfd_zalloc (dynobj, s->size); if (s->contents == NULL) - return false; + return FALSE; } if (htab->elf.dynamic_sections_created) @@ -1603,21 +1884,21 @@ elf_i386_size_dynamic_sections (output_bfd, info) the .dynamic section. The DT_DEBUG entry is filled in by the dynamic linker and used by the debugger. */ #define add_dynamic_entry(TAG, VAL) \ - bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) + _bfd_elf_add_dynamic_entry (info, TAG, VAL) - if (! info->shared) + if (info->executable) { if (!add_dynamic_entry (DT_DEBUG, 0)) - return false; + return FALSE; } - if (htab->splt->_raw_size != 0) + if (htab->splt->size != 0) { if (!add_dynamic_entry (DT_PLTGOT, 0) || !add_dynamic_entry (DT_PLTRELSZ, 0) || !add_dynamic_entry (DT_PLTREL, DT_REL) || !add_dynamic_entry (DT_JMPREL, 0)) - return false; + return FALSE; } if (relocs) @@ -1625,32 +1906,33 @@ elf_i386_size_dynamic_sections (output_bfd, info) if (!add_dynamic_entry (DT_REL, 0) || !add_dynamic_entry (DT_RELSZ, 0) || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel))) - return false; + return FALSE; /* If any dynamic relocs apply to a read-only section, then we need a DT_TEXTREL entry. */ - elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, (PTR) info); + if ((info->flags & DF_TEXTREL) == 0) + elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, + (PTR) info); if ((info->flags & DF_TEXTREL) != 0) { if (!add_dynamic_entry (DT_TEXTREL, 0)) - return false; + return FALSE; } } } #undef add_dynamic_entry - return true; + return TRUE; } /* Set the correct type for an x86 ELF section. We do this by the section name, which is a hack, but ought to work. */ -static boolean -elf_i386_fake_sections (abfd, hdr, sec) - bfd *abfd ATTRIBUTE_UNUSED; - Elf32_Internal_Shdr *hdr; - asection *sec; +static bfd_boolean +elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, + Elf_Internal_Shdr *hdr, + asection *sec) { register const char *name; @@ -1675,22 +1957,47 @@ elf_i386_fake_sections (abfd, hdr, sec) if (strcmp (name, ".reloc") == 0) hdr->sh_type = SHT_PROGBITS; - return true; + return TRUE; +} + +/* Return the base VMA address which should be subtracted from real addresses + when resolving @dtpoff relocation. + This is PT_TLS segment p_vaddr. */ + +static bfd_vma +dtpoff_base (struct bfd_link_info *info) +{ + /* If tls_sec is NULL, we should have signalled an error already. */ + if (elf_hash_table (info)->tls_sec == NULL) + return 0; + return elf_hash_table (info)->tls_sec->vma; +} + +/* Return the relocation value for @tpoff relocation + if STT_TLS virtual address is ADDRESS. */ + +static bfd_vma +tpoff (struct bfd_link_info *info, bfd_vma address) +{ + struct elf_link_hash_table *htab = elf_hash_table (info); + + /* If tls_sec is NULL, we should have signalled an error already. */ + if (htab->tls_sec == NULL) + return 0; + return htab->tls_size + htab->tls_sec->vma - address; } /* Relocate an i386 ELF section. */ -static boolean -elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, - contents, relocs, local_syms, local_sections) - bfd *output_bfd; - struct bfd_link_info *info; - bfd *input_bfd; - asection *input_section; - bfd_byte *contents; - Elf_Internal_Rela *relocs; - Elf_Internal_Sym *local_syms; - asection **local_sections; +static bfd_boolean +elf_i386_relocate_section (bfd *output_bfd, + struct bfd_link_info *info, + bfd *input_bfd, + asection *input_section, + bfd_byte *contents, + Elf_Internal_Rela *relocs, + Elf_Internal_Sym *local_syms, + asection **local_sections) { struct elf_i386_link_hash_table *htab; Elf_Internal_Shdr *symtab_hdr; @@ -1708,7 +2015,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, relend = relocs + input_section->reloc_count; for (; rel < relend; rel++) { - int r_type; + unsigned int r_type; reloc_howto_type *howto; unsigned long r_symndx; struct elf_link_hash_entry *h; @@ -1716,44 +2023,71 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, asection *sec; bfd_vma off; bfd_vma relocation; - boolean unresolved_reloc; + bfd_boolean unresolved_reloc; bfd_reloc_status_type r; unsigned int indx; + int tls_type; r_type = ELF32_R_TYPE (rel->r_info); - if (r_type == (int) R_386_GNU_VTINHERIT - || r_type == (int) R_386_GNU_VTENTRY) + if (r_type == R_386_GNU_VTINHERIT + || r_type == R_386_GNU_VTENTRY) continue; - if ((indx = (unsigned) r_type) >= R_386_standard - && ((indx = (unsigned) r_type - R_386_ext_offset) - R_386_standard - >= R_386_ext - R_386_standard)) + if ((indx = r_type) >= R_386_standard + && ((indx = r_type - R_386_ext_offset) - R_386_standard + >= R_386_ext - R_386_standard) + && ((indx = r_type - R_386_tls_offset) - R_386_ext + >= R_386_tls - R_386_ext)) { + (*_bfd_error_handler) + (_("%B: unrecognized relocation (0x%x) in section `%A'"), + input_bfd, input_section, r_type); bfd_set_error (bfd_error_bad_value); - return false; + return FALSE; } howto = elf_howto_table + indx; r_symndx = ELF32_R_SYM (rel->r_info); - if (info->relocateable) + if (info->relocatable) { + bfd_vma val; + bfd_byte *where; + /* This is a relocatable link. We don't have to change anything, unless the reloc is against a section symbol, in which case we have to adjust according to where the section symbol winds up in the output section. */ - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) - { - bfd_vma val; + if (r_symndx >= symtab_hdr->sh_info) + continue; - sec = local_sections[r_symndx]; - val = bfd_get_32 (input_bfd, contents + rel->r_offset); - val += sec->output_offset + sym->st_value; - bfd_put_32 (input_bfd, val, contents + rel->r_offset); - } + sym = local_syms + r_symndx; + if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) + continue; + + sec = local_sections[r_symndx]; + val = sec->output_offset; + if (val == 0) + continue; + + where = contents + rel->r_offset; + switch (howto->size) + { + /* FIXME: overflow checks. */ + case 0: + val += bfd_get_8 (input_bfd, where); + bfd_put_8 (input_bfd, val, where); + break; + case 1: + val += bfd_get_16 (input_bfd, where); + bfd_put_16 (input_bfd, val, where); + break; + case 2: + val += bfd_get_32 (input_bfd, where); + bfd_put_32 (input_bfd, val, where); + break; + default: + abort (); } continue; } @@ -1762,7 +2096,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, h = NULL; sym = NULL; sec = NULL; - unresolved_reloc = false; + unresolved_reloc = FALSE; if (r_symndx < symtab_hdr->sh_info) { sym = local_syms + r_symndx; @@ -1770,46 +2104,77 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, relocation = (sec->output_section->vma + sec->output_offset + sym->st_value); + if ((sec->flags & SEC_MERGE) + && ELF_ST_TYPE (sym->st_info) == STT_SECTION) + { + asection *msec; + bfd_vma addend; + bfd_byte *where = contents + rel->r_offset; + + switch (howto->size) + { + case 0: + addend = bfd_get_8 (input_bfd, where); + if (howto->pc_relative) + { + addend = (addend ^ 0x80) - 0x80; + addend += 1; + } + break; + case 1: + addend = bfd_get_16 (input_bfd, where); + if (howto->pc_relative) + { + addend = (addend ^ 0x8000) - 0x8000; + addend += 2; + } + break; + case 2: + addend = bfd_get_32 (input_bfd, where); + if (howto->pc_relative) + { + addend = (addend ^ 0x80000000) - 0x80000000; + addend += 4; + } + break; + default: + abort (); + } + + msec = sec; + addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); + addend -= relocation; + addend += msec->output_section->vma + msec->output_offset; + + switch (howto->size) + { + case 0: + /* FIXME: overflow checks. */ + if (howto->pc_relative) + addend -= 1; + bfd_put_8 (input_bfd, addend, where); + break; + case 1: + if (howto->pc_relative) + addend -= 2; + bfd_put_16 (input_bfd, addend, where); + break; + case 2: + if (howto->pc_relative) + addend -= 4; + bfd_put_32 (input_bfd, addend, where); + break; + } + } } else { - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - 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; + bfd_boolean warned; - relocation = 0; - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - sec = h->root.u.def.section; - 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); - } - else if (h->root.type == bfd_link_hash_undefweak) - ; - else if (info->shared - && (!info->symbolic || info->allow_shlib_undefined) - && !info->no_undefined - && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) - ; - else - { - if (! ((*info->callbacks->undefined_symbol) - (info, h->root.root.string, input_bfd, - input_section, rel->r_offset, - (!info->shared || info->no_undefined - || ELF_ST_VISIBILITY (h->other))))) - return false; - } + RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, + r_symndx, symtab_hdr, sym_hashes, + h, sec, relocation, + unresolved_reloc, warned); } switch (r_type) @@ -1822,16 +2187,15 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, if (h != NULL) { - boolean dyn; + bfd_boolean dyn; off = h->got.offset; dyn = htab->elf.dynamic_sections_created; - if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h) + if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) || (info->shared - && (info->symbolic - || h->dynindx == -1 - || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) + && SYMBOL_REFERENCES_LOCAL (info, h)) + || (ELF_ST_VISIBILITY (h->other) + && h->root.type == bfd_link_hash_undefweak)) { /* This is actually a static link, or it is a -Bsymbolic link and the symbol is defined @@ -1855,7 +2219,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, } } else - unresolved_reloc = false; + unresolved_reloc = FALSE; } else { @@ -1876,20 +2240,20 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, if (info->shared) { - asection *srelgot; - Elf_Internal_Rel outrel; - Elf32_External_Rel *loc; + asection *s; + Elf_Internal_Rela outrel; + bfd_byte *loc; - srelgot = htab->srelgot; - if (srelgot == NULL) + s = htab->srelgot; + if (s == NULL) abort (); outrel.r_offset = (htab->sgot->output_section->vma + htab->sgot->output_offset + off); outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); - loc = (Elf32_External_Rel *) srelgot->contents; - loc += srelgot->reloc_count++; + loc = s->contents; + loc += s->reloc_count++ * sizeof (Elf32_External_Rel); bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); } @@ -1900,25 +2264,30 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, if (off >= (bfd_vma) -2) abort (); - relocation = htab->sgot->output_offset + off; + relocation = htab->sgot->output_section->vma + + htab->sgot->output_offset + off + - htab->sgotplt->output_section->vma + - htab->sgotplt->output_offset; break; case R_386_GOTOFF: /* Relocation is relative to the start of the global offset table. */ - /* Note that sgot->output_offset is not involved in this - calculation. We always want the start of .got. If we - defined _GLOBAL_OFFSET_TABLE in a different way, as is + /* Note that sgot is not involved in this + calculation. We always want the start of .got.plt. If we + defined _GLOBAL_OFFSET_TABLE_ in a different way, as is permitted by the ABI, we might have to change this calculation. */ - relocation -= htab->sgot->output_section->vma; + relocation -= htab->sgotplt->output_section->vma + + htab->sgotplt->output_offset; break; case R_386_GOTPC: /* Use global offset table as symbol value. */ - relocation = htab->sgot->output_section->vma; - unresolved_reloc = false; + relocation = htab->sgotplt->output_section->vma + + htab->sgotplt->output_offset; + unresolved_reloc = FALSE; break; case R_386_PLT32: @@ -1942,7 +2311,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, relocation = (htab->splt->output_section->vma + htab->splt->output_offset + h->plt.offset); - unresolved_reloc = false; + unresolved_reloc = FALSE; break; case R_386_32: @@ -1950,18 +2319,29 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, /* r_symndx will be zero only for relocs against symbols from removed linkonce sections, or sections discarded by a linker script. */ - if (r_symndx == 0 - || (input_section->flags & SEC_ALLOC) == 0) + if (r_symndx == 0) + { + /* Zero the section contents. eh_frame generated by old + versions of gcc isn't edited by elf-eh-frame.c, so + FDEs for discarded linkonce functions might remain. + Putting zeros here will zero such FDE's address range. + This is a hint to unwinders and other consumers of + exception handling info that the FDE is invalid. */ + bfd_put_32 (input_bfd, 0, contents + rel->r_offset); + break; + } + + if ((input_section->flags & SEC_ALLOC) == 0) break; if ((info->shared + && (h == NULL + || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT + || h->root.type != bfd_link_hash_undefweak) && (r_type != R_386_PC32 - || (h != NULL - && h->dynindx != -1 - && (! info->symbolic - || (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0)))) - || (!info->shared + || !SYMBOL_CALLS_LOCAL (info, h))) + || (ELIMINATE_COPY_RELOCS + && !info->shared && h != NULL && h->dynindx != -1 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 @@ -1972,38 +2352,30 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, || h->root.type == bfd_link_hash_undefweak || h->root.type == bfd_link_hash_undefined))) { - Elf_Internal_Rel outrel; - boolean skip, relocate; + Elf_Internal_Rela outrel; + bfd_byte *loc; + bfd_boolean skip, relocate; asection *sreloc; - Elf32_External_Rel *loc; /* When generating a shared object, these relocations are copied into the output file to be resolved at run time. */ - skip = false; - - if (elf_section_data (input_section)->stab_info == NULL) - outrel.r_offset = rel->r_offset; - else - { - off = (_bfd_stab_section_offset - (output_bfd, htab->elf.stab_info, input_section, - &elf_section_data (input_section)->stab_info, - rel->r_offset)); - if (off == (bfd_vma) -1) - skip = true; - outrel.r_offset = off; - } + 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); if (skip) - { - memset (&outrel, 0, sizeof outrel); - relocate = false; - } + memset (&outrel, 0, sizeof outrel); else if (h != NULL && h->dynindx != -1 && (r_type == R_386_PC32 @@ -2011,15 +2383,11 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, || !info->symbolic || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)) - - { - relocate = false; - outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); - } + outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); else { /* This symbol is local, or marked to become local. */ - relocate = true; + relocate = TRUE; outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); } @@ -2027,8 +2395,8 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, if (sreloc == NULL) abort (); - loc = (Elf32_External_Rel *) sreloc->contents; - loc += sreloc->reloc_count++; + loc = sreloc->contents; + loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); /* If this reloc is against an external symbol, we do @@ -2040,29 +2408,524 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, } break; + case R_386_TLS_IE: + if (info->shared) + { + Elf_Internal_Rela outrel; + bfd_byte *loc; + asection *sreloc; + + outrel.r_offset = rel->r_offset + + input_section->output_section->vma + + input_section->output_offset; + outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); + sreloc = elf_section_data (input_section)->sreloc; + if (sreloc == NULL) + abort (); + loc = sreloc->contents; + loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); + bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); + } + /* Fall through */ + + case R_386_TLS_GD: + case R_386_TLS_IE_32: + case R_386_TLS_GOTIE: + r_type = elf_i386_tls_transition (info, r_type, h == NULL); + tls_type = GOT_UNKNOWN; + if (h == NULL && local_got_offsets) + tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx]; + else if (h != NULL) + { + tls_type = elf_i386_hash_entry(h)->tls_type; + if (!info->shared && h->dynindx == -1 && (tls_type & GOT_TLS_IE)) + r_type = R_386_TLS_LE_32; + } + if (tls_type == GOT_TLS_IE) + tls_type = GOT_TLS_IE_NEG; + if (r_type == R_386_TLS_GD) + { + if (tls_type == GOT_TLS_IE_POS) + r_type = R_386_TLS_GOTIE; + else if (tls_type & GOT_TLS_IE) + r_type = R_386_TLS_IE_32; + } + + if (r_type == R_386_TLS_LE_32) + { + BFD_ASSERT (! unresolved_reloc); + if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD) + { + unsigned int val, type; + bfd_vma roff; + + /* GD->LE transition. */ + BFD_ASSERT (rel->r_offset >= 2); + type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); + BFD_ASSERT (type == 0x8d || type == 0x04); + BFD_ASSERT (rel->r_offset + 9 <= input_section->size); + BFD_ASSERT (bfd_get_8 (input_bfd, + contents + rel->r_offset + 4) + == 0xe8); + BFD_ASSERT (rel + 1 < relend); + BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); + roff = rel->r_offset + 5; + val = bfd_get_8 (input_bfd, + contents + rel->r_offset - 1); + if (type == 0x04) + { + /* leal foo(,%reg,1), %eax; call ___tls_get_addr + Change it into: + movl %gs:0, %eax; subl $foo@tpoff, %eax + (6 byte form of subl). */ + BFD_ASSERT (rel->r_offset >= 3); + BFD_ASSERT (bfd_get_8 (input_bfd, + contents + rel->r_offset - 3) + == 0x8d); + BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3)); + memcpy (contents + rel->r_offset - 3, + "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); + } + else + { + BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); + if (rel->r_offset + 10 <= input_section->size + && bfd_get_8 (input_bfd, + contents + rel->r_offset + 9) == 0x90) + { + /* leal foo(%reg), %eax; call ___tls_get_addr; nop + Change it into: + movl %gs:0, %eax; subl $foo@tpoff, %eax + (6 byte form of subl). */ + memcpy (contents + rel->r_offset - 2, + "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12); + roff = rel->r_offset + 6; + } + else + { + /* leal foo(%reg), %eax; call ___tls_get_addr + Change it into: + movl %gs:0, %eax; subl $foo@tpoff, %eax + (5 byte form of subl). */ + memcpy (contents + rel->r_offset - 2, + "\x65\xa1\0\0\0\0\x2d\0\0\0", 11); + } + } + bfd_put_32 (output_bfd, tpoff (info, relocation), + contents + roff); + /* Skip R_386_PLT32. */ + rel++; + continue; + } + else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE) + { + unsigned int val, type; + + /* IE->LE transition: + Originally it can be one of: + movl foo, %eax + movl foo, %reg + addl foo, %reg + We change it into: + movl $foo, %eax + movl $foo, %reg + addl $foo, %reg. */ + BFD_ASSERT (rel->r_offset >= 1); + val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); + BFD_ASSERT (rel->r_offset + 4 <= input_section->size); + if (val == 0xa1) + { + /* movl foo, %eax. */ + bfd_put_8 (output_bfd, 0xb8, + contents + rel->r_offset - 1); + } + else + { + BFD_ASSERT (rel->r_offset >= 2); + type = bfd_get_8 (input_bfd, + contents + rel->r_offset - 2); + switch (type) + { + case 0x8b: + /* movl */ + BFD_ASSERT ((val & 0xc7) == 0x05); + bfd_put_8 (output_bfd, 0xc7, + contents + rel->r_offset - 2); + bfd_put_8 (output_bfd, + 0xc0 | ((val >> 3) & 7), + contents + rel->r_offset - 1); + break; + case 0x03: + /* addl */ + BFD_ASSERT ((val & 0xc7) == 0x05); + bfd_put_8 (output_bfd, 0x81, + contents + rel->r_offset - 2); + bfd_put_8 (output_bfd, + 0xc0 | ((val >> 3) & 7), + contents + rel->r_offset - 1); + break; + default: + BFD_FAIL (); + break; + } + } + bfd_put_32 (output_bfd, -tpoff (info, relocation), + contents + rel->r_offset); + continue; + } + else + { + unsigned int val, type; + + /* {IE_32,GOTIE}->LE transition: + Originally it can be one of: + subl foo(%reg1), %reg2 + movl foo(%reg1), %reg2 + addl foo(%reg1), %reg2 + We change it into: + subl $foo, %reg2 + movl $foo, %reg2 (6 byte form) + addl $foo, %reg2. */ + BFD_ASSERT (rel->r_offset >= 2); + type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); + val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); + BFD_ASSERT (rel->r_offset + 4 <= input_section->size); + BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4); + if (type == 0x8b) + { + /* movl */ + bfd_put_8 (output_bfd, 0xc7, + contents + rel->r_offset - 2); + bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), + contents + rel->r_offset - 1); + } + else if (type == 0x2b) + { + /* subl */ + bfd_put_8 (output_bfd, 0x81, + contents + rel->r_offset - 2); + bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7), + contents + rel->r_offset - 1); + } + else if (type == 0x03) + { + /* addl */ + bfd_put_8 (output_bfd, 0x81, + contents + rel->r_offset - 2); + bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7), + contents + rel->r_offset - 1); + } + else + BFD_FAIL (); + if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE) + bfd_put_32 (output_bfd, -tpoff (info, relocation), + contents + rel->r_offset); + else + bfd_put_32 (output_bfd, tpoff (info, relocation), + contents + rel->r_offset); + continue; + } + } + + if (htab->sgot == NULL) + abort (); + + if (h != NULL) + off = h->got.offset; + else + { + if (local_got_offsets == NULL) + abort (); + + off = local_got_offsets[r_symndx]; + } + + if ((off & 1) != 0) + off &= ~1; + else + { + Elf_Internal_Rela outrel; + bfd_byte *loc; + int dr_type, indx; + + if (htab->srelgot == NULL) + abort (); + + outrel.r_offset = (htab->sgot->output_section->vma + + htab->sgot->output_offset + off); + + indx = h && h->dynindx != -1 ? h->dynindx : 0; + if (r_type == R_386_TLS_GD) + dr_type = R_386_TLS_DTPMOD32; + else if (tls_type == GOT_TLS_IE_POS) + dr_type = R_386_TLS_TPOFF; + else + dr_type = R_386_TLS_TPOFF32; + if (dr_type == R_386_TLS_TPOFF && indx == 0) + bfd_put_32 (output_bfd, relocation - dtpoff_base (info), + htab->sgot->contents + off); + else if (dr_type == R_386_TLS_TPOFF32 && indx == 0) + bfd_put_32 (output_bfd, dtpoff_base (info) - relocation, + htab->sgot->contents + off); + else + bfd_put_32 (output_bfd, 0, + htab->sgot->contents + off); + outrel.r_info = ELF32_R_INFO (indx, dr_type); + loc = htab->srelgot->contents; + loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); + bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); + + if (r_type == R_386_TLS_GD) + { + if (indx == 0) + { + BFD_ASSERT (! unresolved_reloc); + bfd_put_32 (output_bfd, + relocation - dtpoff_base (info), + htab->sgot->contents + off + 4); + } + else + { + bfd_put_32 (output_bfd, 0, + htab->sgot->contents + off + 4); + outrel.r_info = ELF32_R_INFO (indx, + R_386_TLS_DTPOFF32); + outrel.r_offset += 4; + htab->srelgot->reloc_count++; + loc += sizeof (Elf32_External_Rel); + bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); + } + } + else if (tls_type == GOT_TLS_IE_BOTH) + { + bfd_put_32 (output_bfd, + indx == 0 ? relocation - dtpoff_base (info) : 0, + htab->sgot->contents + off + 4); + outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); + outrel.r_offset += 4; + htab->srelgot->reloc_count++; + loc += sizeof (Elf32_External_Rel); + bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); + } + + if (h != NULL) + h->got.offset |= 1; + else + local_got_offsets[r_symndx] |= 1; + } + + if (off >= (bfd_vma) -2) + abort (); + if (r_type == ELF32_R_TYPE (rel->r_info)) + { + bfd_vma g_o_t = htab->sgotplt->output_section->vma + + htab->sgotplt->output_offset; + relocation = htab->sgot->output_section->vma + + htab->sgot->output_offset + off - g_o_t; + if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE) + && tls_type == GOT_TLS_IE_BOTH) + relocation += 4; + if (r_type == R_386_TLS_IE) + relocation += g_o_t; + unresolved_reloc = FALSE; + } + else + { + unsigned int val, type; + bfd_vma roff; + + /* GD->IE transition. */ + BFD_ASSERT (rel->r_offset >= 2); + type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); + BFD_ASSERT (type == 0x8d || type == 0x04); + BFD_ASSERT (rel->r_offset + 9 <= input_section->size); + BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4) + == 0xe8); + BFD_ASSERT (rel + 1 < relend); + BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); + roff = rel->r_offset - 3; + val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); + if (type == 0x04) + { + /* leal foo(,%reg,1), %eax; call ___tls_get_addr + Change it into: + movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ + BFD_ASSERT (rel->r_offset >= 3); + BFD_ASSERT (bfd_get_8 (input_bfd, + contents + rel->r_offset - 3) + == 0x8d); + BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3)); + val >>= 3; + } + else + { + /* leal foo(%reg), %eax; call ___tls_get_addr; nop + Change it into: + movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax. */ + BFD_ASSERT (rel->r_offset + 10 <= input_section->size); + BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); + BFD_ASSERT (bfd_get_8 (input_bfd, + contents + rel->r_offset + 9) + == 0x90); + roff = rel->r_offset - 2; + } + memcpy (contents + roff, + "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12); + contents[roff + 7] = 0x80 | (val & 7); + /* If foo is used only with foo@gotntpoff(%reg) and + foo@indntpoff, but not with foo@gottpoff(%reg), change + subl $foo@gottpoff(%reg), %eax + into: + addl $foo@gotntpoff(%reg), %eax. */ + if (r_type == R_386_TLS_GOTIE) + { + contents[roff + 6] = 0x03; + if (tls_type == GOT_TLS_IE_BOTH) + off += 4; + } + bfd_put_32 (output_bfd, + htab->sgot->output_section->vma + + htab->sgot->output_offset + off + - htab->sgotplt->output_section->vma + - htab->sgotplt->output_offset, + contents + roff + 8); + /* Skip R_386_PLT32. */ + rel++; + continue; + } + break; + + case R_386_TLS_LDM: + if (! info->shared) + { + unsigned int val; + + /* LD->LE transition: + Ensure it is: + leal foo(%reg), %eax; call ___tls_get_addr. + We change it into: + movl %gs:0, %eax; nop; leal 0(%esi,1), %esi. */ + BFD_ASSERT (rel->r_offset >= 2); + BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2) + == 0x8d); + val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1); + BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); + BFD_ASSERT (rel->r_offset + 9 <= input_section->size); + BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4) + == 0xe8); + BFD_ASSERT (rel + 1 < relend); + BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32); + memcpy (contents + rel->r_offset - 2, + "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11); + /* Skip R_386_PLT32. */ + rel++; + continue; + } + + if (htab->sgot == NULL) + abort (); + + off = htab->tls_ldm_got.offset; + if (off & 1) + off &= ~1; + else + { + Elf_Internal_Rela outrel; + bfd_byte *loc; + + if (htab->srelgot == NULL) + abort (); + + outrel.r_offset = (htab->sgot->output_section->vma + + htab->sgot->output_offset + off); + + bfd_put_32 (output_bfd, 0, + htab->sgot->contents + off); + bfd_put_32 (output_bfd, 0, + htab->sgot->contents + off + 4); + outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); + loc = htab->srelgot->contents; + loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); + bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); + htab->tls_ldm_got.offset |= 1; + } + relocation = htab->sgot->output_section->vma + + htab->sgot->output_offset + off + - htab->sgotplt->output_section->vma + - htab->sgotplt->output_offset; + unresolved_reloc = FALSE; + break; + + case R_386_TLS_LDO_32: + if (info->shared || (input_section->flags & SEC_CODE) == 0) + relocation -= dtpoff_base (info); + else + /* When converting LDO to LE, we must negate. */ + relocation = -tpoff (info, relocation); + break; + + case R_386_TLS_LE_32: + case R_386_TLS_LE: + if (info->shared) + { + Elf_Internal_Rela outrel; + asection *sreloc; + bfd_byte *loc; + int indx; + + outrel.r_offset = rel->r_offset + + input_section->output_section->vma + + input_section->output_offset; + if (h != NULL && h->dynindx != -1) + indx = h->dynindx; + else + indx = 0; + if (r_type == R_386_TLS_LE_32) + outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32); + else + outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); + sreloc = elf_section_data (input_section)->sreloc; + if (sreloc == NULL) + abort (); + loc = sreloc->contents; + loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel); + bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); + if (indx) + continue; + else if (r_type == R_386_TLS_LE_32) + relocation = dtpoff_base (info) - relocation; + else + relocation -= dtpoff_base (info); + } + else if (r_type == R_386_TLS_LE_32) + relocation = tpoff (info, relocation); + else + relocation = -tpoff (info, relocation); + break; + default: break; } - /* FIXME: Why do we allow debugging sections to escape this error? - More importantly, why do we not emit dynamic relocs for - R_386_32 above in debugging sections (which are ! SEC_ALLOC)? - If we had emitted the dynamic reloc, we could remove the - fudge here. */ + /* Dynamic relocs are not propagated for SEC_DEBUGGING sections + because such sections are not SEC_ALLOC and thus ld.so will + not process them. */ if (unresolved_reloc - && !(info->shared - && (input_section->flags & SEC_DEBUGGING) != 0 + && !((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); + { + (*_bfd_error_handler) + (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"), + input_bfd, + input_section, + (long) rel->r_offset, + h->root.root.string); + return FALSE; + } r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, rel->r_offset, - relocation, (bfd_vma) 0); + relocation, 0); if (r != bfd_reloc_ok) { @@ -2076,43 +2939,40 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, symtab_hdr->sh_link, sym->st_name); if (name == NULL) - return false; + return FALSE; if (*name == '\0') name = bfd_section_name (input_bfd, sec); } if (r == bfd_reloc_overflow) { - if (! ((*info->callbacks->reloc_overflow) - (info, name, howto->name, (bfd_vma) 0, + (info, name, howto->name, 0, input_bfd, input_section, rel->r_offset))) - return false; + return FALSE; } else { (*_bfd_error_handler) - (_("%s(%s+0x%lx): reloc against `%s': error %d"), - bfd_archive_filename (input_bfd), - bfd_get_section_name (input_bfd, input_section), + (_("%B(%A+0x%lx): reloc against `%s': error %d"), + input_bfd, input_section, (long) rel->r_offset, name, (int) r); - return false; + return FALSE; } } } - return true; + return TRUE; } /* Finish up dynamic symbol handling. We set the contents of various dynamic sections here. */ -static boolean -elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym) - bfd *output_bfd; - struct bfd_link_info *info; - struct elf_link_hash_entry *h; - Elf_Internal_Sym *sym; +static bfd_boolean +elf_i386_finish_dynamic_symbol (bfd *output_bfd, + struct bfd_link_info *info, + struct elf_link_hash_entry *h, + Elf_Internal_Sym *sym) { struct elf_i386_link_hash_table *htab; @@ -2122,8 +2982,8 @@ elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym) { bfd_vma plt_index; bfd_vma got_offset; - Elf_Internal_Rel rel; - Elf32_External_Rel *loc; + Elf_Internal_Rela rel; + bfd_byte *loc; /* This symbol has an entry in the procedure linkage table. Set it up. */ @@ -2182,24 +3042,31 @@ elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym) + htab->sgotplt->output_offset + got_offset); rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT); - loc = (Elf32_External_Rel *) htab->srelplt->contents + plt_index; + loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel); bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) { /* Mark the symbol as undefined, rather than as defined in - the .plt section. Leave the value alone. This is a clue + the .plt section. Leave the value if there were any + relocations where pointer equality matters (this is a clue for the dynamic linker, to make function pointer comparisons work between an application and shared - library. */ + library), otherwise set it to zero. If a function is only + called from a binary, there is no need to slow down + shared libraries because of that. */ sym->st_shndx = SHN_UNDEF; + if ((h->elf_link_hash_flags & ELF_LINK_POINTER_EQUALITY_NEEDED) == 0) + sym->st_value = 0; } } - if (h->got.offset != (bfd_vma) -1) + if (h->got.offset != (bfd_vma) -1 + && elf_i386_hash_entry(h)->tls_type != GOT_TLS_GD + && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0) { - Elf_Internal_Rel rel; - Elf32_External_Rel *loc; + Elf_Internal_Rela rel; + bfd_byte *loc; /* This symbol has an entry in the global offset table. Set it up. */ @@ -2217,10 +3084,7 @@ elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym) The entry in the global offset table will already have been initialized in the relocate_section function. */ if (info->shared - && (info->symbolic - || h->dynindx == -1 - || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) + && SYMBOL_REFERENCES_LOCAL (info, h)) { BFD_ASSERT((h->got.offset & 1) != 0); rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE); @@ -2233,15 +3097,15 @@ elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym) rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT); } - loc = (Elf32_External_Rel *) htab->srelgot->contents; - loc += htab->srelgot->reloc_count++; + loc = htab->srelgot->contents; + loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel); bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); } if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) { - Elf_Internal_Rel rel; - Elf32_External_Rel *loc; + Elf_Internal_Rela rel; + bfd_byte *loc; /* This symbol needs a copy reloc. Set it up. */ @@ -2255,8 +3119,8 @@ elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym) + h->root.u.def.section->output_section->vma + h->root.u.def.section->output_offset); rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY); - loc = (Elf32_External_Rel *) htab->srelbss->contents; - loc += htab->srelbss->reloc_count++; + loc = htab->srelbss->contents; + loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel); bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); } @@ -2265,17 +3129,16 @@ elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym) || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) sym->st_shndx = SHN_ABS; - return true; + return TRUE; } /* Used to decide how to sort relocs in an optimal manner for the dynamic linker, before writing them out. */ static enum elf_reloc_type_class -elf_i386_reloc_type_class (rela) - const Elf_Internal_Rela *rela; +elf_i386_reloc_type_class (const Elf_Internal_Rela *rela) { - switch ((int) ELF32_R_TYPE (rela->r_info)) + switch (ELF32_R_TYPE (rela->r_info)) { case R_386_RELATIVE: return reloc_class_relative; @@ -2290,10 +3153,9 @@ elf_i386_reloc_type_class (rela) /* Finish up the dynamic sections. */ -static boolean -elf_i386_finish_dynamic_sections (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; +static bfd_boolean +elf_i386_finish_dynamic_sections (bfd *output_bfd, + struct bfd_link_info *info) { struct elf_i386_link_hash_table *htab; bfd *dynobj; @@ -2311,7 +3173,7 @@ elf_i386_finish_dynamic_sections (output_bfd, info) abort (); dyncon = (Elf32_External_Dyn *) sdyn->contents; - dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); + dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); for (; dyncon < dynconend; dyncon++) { Elf_Internal_Dyn dyn; @@ -2325,19 +3187,18 @@ elf_i386_finish_dynamic_sections (output_bfd, info) continue; case DT_PLTGOT: - dyn.d_un.d_ptr = htab->sgot->output_section->vma; + s = htab->sgotplt; + dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; break; case DT_JMPREL: - dyn.d_un.d_ptr = htab->srelplt->output_section->vma; + s = htab->srelplt; + dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; break; case DT_PLTRELSZ: - s = htab->srelplt->output_section; - if (s->_cooked_size != 0) - dyn.d_un.d_val = s->_cooked_size; - else - dyn.d_un.d_val = s->_raw_size; + s = htab->srelplt; + dyn.d_un.d_val = s->size; break; case DT_RELSZ: @@ -2346,18 +3207,23 @@ elf_i386_finish_dynamic_sections (output_bfd, info) included in the overall relocs (DT_REL). This is what Solaris does. However, UnixWare can not handle that case. Therefore, we override the DT_RELSZ entry - here to make it not include the JMPREL relocs. Since - the linker script arranges for .rel.plt to follow all - other relocation sections, we don't have to worry - about changing the DT_REL entry. */ - if (htab->srelplt != NULL) - { - s = htab->srelplt->output_section; - if (s->_cooked_size != 0) - dyn.d_un.d_val -= s->_cooked_size; - else - dyn.d_un.d_val -= s->_raw_size; - } + here to make it not include the JMPREL relocs. */ + s = htab->srelplt; + if (s == NULL) + continue; + dyn.d_un.d_val -= s->size; + break; + + case DT_REL: + /* We may not be using the standard ELF linker script. + If .rel.plt is the first .rel section, we adjust + DT_REL to not include it. */ + s = htab->srelplt; + if (s == NULL) + continue; + if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) + continue; + dyn.d_un.d_ptr += s->size; break; } @@ -2365,7 +3231,7 @@ elf_i386_finish_dynamic_sections (output_bfd, info) } /* Fill in the first entry in the procedure linkage table. */ - if (htab->splt && htab->splt->_raw_size > 0) + if (htab->splt && htab->splt->size > 0) { if (info->shared) memcpy (htab->splt->contents, @@ -2396,21 +3262,36 @@ elf_i386_finish_dynamic_sections (output_bfd, info) if (htab->sgotplt) { /* Fill in the first three entries in the global offset table. */ - if (htab->sgotplt->_raw_size > 0) + if (htab->sgotplt->size > 0) { bfd_put_32 (output_bfd, - (sdyn == NULL ? (bfd_vma) 0 + (sdyn == NULL ? 0 : sdyn->output_section->vma + sdyn->output_offset), htab->sgotplt->contents); - bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4); - bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8); + bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 4); + bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 8); } elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4; } - return true; + + if (htab->sgot && htab->sgot->size > 0) + elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4; + + return TRUE; } +/* Return address for Ith PLT stub in section PLT, for relocation REL + or (bfd_vma) -1 if it should not be included. */ + +static bfd_vma +elf_i386_plt_sym_val (bfd_vma i, const asection *plt, + const arelent *rel ATTRIBUTE_UNUSED) +{ + return plt->vma + (i + 1) * PLT_ENTRY_SIZE; +} + + #define TARGET_LITTLE_SYM bfd_elf32_i386_vec #define TARGET_LITTLE_NAME "elf32-i386" #define ELF_ARCH bfd_arch_i386 @@ -2423,11 +3304,13 @@ elf_i386_finish_dynamic_sections (output_bfd, info) #define elf_backend_plt_readonly 1 #define elf_backend_want_plt_sym 0 #define elf_backend_got_header_size 12 -#define elf_backend_plt_header_size PLT_ENTRY_SIZE -#define elf_info_to_howto elf_i386_info_to_howto +/* Support RELA for objdump of prelink objects. */ +#define elf_info_to_howto elf_i386_info_to_howto_rel #define elf_info_to_howto_rel elf_i386_info_to_howto_rel +#define bfd_elf32_mkobject elf_i386_mkobject + #define bfd_elf32_bfd_is_local_label_name elf_i386_is_local_label_name #define bfd_elf32_bfd_link_hash_table_create elf_i386_link_hash_table_create #define bfd_elf32_bfd_reloc_type_lookup elf_i386_reloc_type_lookup @@ -2446,5 +3329,40 @@ elf_i386_finish_dynamic_sections (output_bfd, info) #define elf_backend_reloc_type_class elf_i386_reloc_type_class #define elf_backend_relocate_section elf_i386_relocate_section #define elf_backend_size_dynamic_sections elf_i386_size_dynamic_sections +#define elf_backend_plt_sym_val elf_i386_plt_sym_val + +#include "elf32-target.h" + +/* FreeBSD support. */ + +#undef TARGET_LITTLE_SYM +#define TARGET_LITTLE_SYM bfd_elf32_i386_freebsd_vec +#undef TARGET_LITTLE_NAME +#define TARGET_LITTLE_NAME "elf32-i386-freebsd" + +/* The kernel recognizes executables as valid only if they carry a + "FreeBSD" label in the ELF header. So we put this label on all + executables and (for simplicity) also all other object files. */ + +static void +elf_i386_post_process_headers (bfd *abfd, + struct bfd_link_info *info ATTRIBUTE_UNUSED) +{ + Elf_Internal_Ehdr *i_ehdrp; + + i_ehdrp = elf_elfheader (abfd); + + /* Put an ABI label supported by FreeBSD >= 4.1. */ + i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD; +#ifdef OLD_FREEBSD_ABI_LABEL + /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard. */ + memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8); +#endif +} + +#undef elf_backend_post_process_headers +#define elf_backend_post_process_headers elf_i386_post_process_headers +#undef elf32_bed +#define elf32_bed elf32_i386_fbsd_bed #include "elf32-target.h"