X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Felf32-i386.c;h=48e76e916e80375cff3cdaddb743e7ae7ee4d077;hb=c456f0829fef883581694547d21b7183cdbaa3d6;hp=d52d5a7db4d920cd38b5735cbdcbbe7748d52d8e;hpb=37e55690c4f22ba8d0a24fb9a3ccbb1515e49790;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c index d52d5a7db4..48e76e916e 100644 --- a/bfd/elf32-i386.c +++ b/bfd/elf32-i386.c @@ -1,368 +1,304 @@ /* Intel 80386/80486-specific support for 32-bit ELF - Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 - Free Software Foundation, Inc. + Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, + 2003, 2004, 2005 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ #include "bfd.h" #include "sysdep.h" #include "bfdlink.h" #include "libbfd.h" #include "elf-bfd.h" +#include "elf-vxworks.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_backend_data *, struct elf_link_hash_entry *, - struct elf_link_hash_entry *)); -static int elf_i386_tls_transition - PARAMS ((struct bfd_link_info *, int, int)); - -static boolean elf_i386_mkobject - PARAMS((bfd *)); -static boolean elf_i386_object_p - PARAMS((bfd *)); -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 ((asection *, 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 bfd_vma dtpoff_base - PARAMS ((struct bfd_link_info *)); -static bfd_vma tpoff - PARAMS ((struct bfd_link_info *, bfd_vma)); -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_TLS_TPOFF - R_386_standard) +#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, + 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, + 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, + 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, + 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, + 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, + 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, + 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 ((unsigned int) R_386_PC8 + 1 - R_386_ext_offset) -#define R_386_tls_offset ((unsigned int) R_386_TLS_LDO_32 - R_386_ext) +#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, + 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, + 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, + 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, + 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, + 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, + 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), + TRUE, 0xffffffff, 0xffffffff, FALSE), /* Another gap. */ -#define R_386_tls ((unsigned int) R_386_TLS_TPOFF32 + 1 - R_386_tls_offset) -#define R_386_vt_offset ((unsigned int) R_386_GNU_VTINHERIT - R_386_tls) +#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), /* pcrel_offset */ + 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) /* pcrel_offset */ + 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[(unsigned int) R_386_TLS_TPOFF - R_386_ext_offset]; + 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[(unsigned int) R_386_TLS_IE - R_386_ext_offset]; + 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[(unsigned int) R_386_TLS_GOTIE - R_386_ext_offset]; + 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[(unsigned int) R_386_TLS_LE - R_386_ext_offset]; + 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[(unsigned int) R_386_TLS_GD - R_386_ext_offset]; + 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[(unsigned int) R_386_TLS_LDM - R_386_ext_offset]; + return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset]; 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[(unsigned int) R_386_TLS_LDO_32 - R_386_tls_offset]; + 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[(unsigned int) R_386_TLS_IE_32 - R_386_tls_offset]; + 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[(unsigned int) R_386_TLS_LE_32 - R_386_tls_offset]; + 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[(unsigned int) R_386_TLS_DTPMOD32 - R_386_tls_offset]; + 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[(unsigned int) R_386_TLS_DTPOFF32 - R_386_tls_offset]; + 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[(unsigned int) R_386_TLS_TPOFF32 - R_386_tls_offset]; + 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; @@ -373,19 +309,9 @@ 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; @@ -398,9 +324,9 @@ elf_i386_info_to_howto_rel (abfd, cache_ptr, dst) && ((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]; } @@ -411,71 +337,100 @@ 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 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); + 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); @@ -484,7 +439,7 @@ elf_i386_grok_psinfo (abfd, note) command[n - 1] = '\0'; } - return true; + return TRUE; } /* Functions for the i386 ELF linker. @@ -506,20 +461,26 @@ 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 /* The first entry in an absolute procedure linkage table looks like - this. See the SVR4 ABI i386 supplement to see how this works. */ + this. See the SVR4 ABI i386 supplement to see how this works. + Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */ -static const bfd_byte elf_i386_plt0_entry[PLT_ENTRY_SIZE] = +static const bfd_byte elf_i386_plt0_entry[12] = { 0xff, 0x35, /* pushl contents of address */ 0, 0, 0, 0, /* replaced with address of .got + 4. */ 0xff, 0x25, /* jmp indirect */ - 0, 0, 0, 0, /* replaced with address of .got + 8. */ - 0, 0, 0, 0 /* pad out to 16 bytes. */ + 0, 0, 0, 0 /* replaced with address of .got + 8. */ }; /* Subsequent entries in an absolute procedure linkage table look like @@ -535,13 +496,13 @@ static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] = 0, 0, 0, 0 /* replaced with offset to start of .plt. */ }; -/* The first entry in a PIC procedure linkage table look like this. */ +/* The first entry in a PIC procedure linkage table look like this. + Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte. */ -static const bfd_byte elf_i386_pic_plt0_entry[PLT_ENTRY_SIZE] = +static const bfd_byte elf_i386_pic_plt0_entry[12] = { 0xff, 0xb3, 4, 0, 0, 0, /* pushl 4(%ebx) */ - 0xff, 0xa3, 8, 0, 0, 0, /* jmp *8(%ebx) */ - 0, 0, 0, 0 /* pad out to 16 bytes. */ + 0xff, 0xa3, 8, 0, 0, 0 /* jmp *8(%ebx) */ }; /* Subsequent entries in a PIC procedure linkage table look like this. */ @@ -556,6 +517,12 @@ static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] = 0, 0, 0, 0 /* replaced with offset to start of .plt. */ }; +/* On VxWorks, the .rel.plt.unloaded section has absolute relocations + for the PLTResolve stub and then for each PLT entry. */ +#define PLTRESOLVE_RELOCS_SHLIB 0 +#define PLTRESOLVE_RELOCS 2 +#define PLT_NON_JUMP_SLOT_RELOCS 2 + /* The i386 linker needs to keep track of the number of relocs that it decides to copy as dynamic relocs in check_relocs for each symbol. This is so that it can later discard them if they are found to be @@ -611,30 +578,14 @@ struct elf_i386_obj_tdata #define elf_i386_local_got_tls_type(abfd) \ (elf_i386_tdata (abfd)->local_got_tls_type) -static boolean -elf_i386_mkobject (abfd) - bfd *abfd; +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; -} - -static boolean -elf_i386_object_p (abfd) - bfd *abfd; -{ - /* Allocate our special target data. */ - struct elf_i386_obj_tdata *new_tdata; - bfd_size_type amt = sizeof (struct elf_i386_obj_tdata); - new_tdata = bfd_zalloc (abfd, amt); - if (new_tdata == NULL) - return false; - new_tdata->root = *abfd->tdata.elf_obj_data; - abfd->tdata.any = new_tdata; - return true; + return FALSE; + return TRUE; } /* i386 ELF linker hash table. */ @@ -652,6 +603,18 @@ struct elf_i386_link_hash_table asection *sdynbss; asection *srelbss; + /* The (unloaded but important) .rel.plt.unloaded section on VxWorks. */ + asection *srelplt2; + + /* Short-cuts to frequently used symbols for VxWorks targets. */ + struct elf_link_hash_entry *hgot, *hplt; + + /* True if the target system is VxWorks. */ + int is_vxworks; + + /* Value used to fill the last word of the first plt entry. */ + bfd_byte plt0_pad_byte; + union { bfd_signed_vma refcount; bfd_vma offset; @@ -669,10 +632,9 @@ 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. */ @@ -701,13 +663,12 @@ 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_malloc (amt); + ret = bfd_malloc (amt); if (ret == NULL) return NULL; @@ -726,6 +687,11 @@ elf_i386_link_hash_table_create (abfd) ret->srelbss = NULL; ret->tls_ldm_got.refcount = 0; ret->sym_sec.abfd = NULL; + ret->is_vxworks = 0; + ret->srelplt2 = NULL; + ret->hgot = NULL; + ret->hplt = NULL; + ret->plt0_pad_byte = 0; return &ret->elf.root; } @@ -733,15 +699,13 @@ 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"); @@ -749,34 +713,36 @@ create_got_section (dynobj, info) if (!htab->sgot || !htab->sgotplt) abort (); - htab->srelgot = bfd_make_section (dynobj, ".rel.got"); + htab->srelgot = bfd_make_section_with_flags (dynobj, ".rel.got", + (SEC_ALLOC | SEC_LOAD + | SEC_HAS_CONTENTS + | SEC_IN_MEMORY + | SEC_LINKER_CREATED + | SEC_READONLY)); if (htab->srelgot == NULL - || ! bfd_set_section_flags (dynobj, htab->srelgot, - (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS - | 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; + asection * s; + int flags; + const struct elf_backend_data *bed = get_elf_backend_data (dynobj); 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"); @@ -788,15 +754,27 @@ elf_i386_create_dynamic_sections (dynobj, info) || (!info->shared && !htab->srelbss)) abort (); - return true; + if (htab->is_vxworks && !info->shared) + { + s = bfd_make_section (dynobj, ".rel.plt.unloaded"); + flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_READONLY + | SEC_LINKER_CREATED); + if (s == NULL + || ! bfd_set_section_flags (dynobj, s, flags) + || ! bfd_set_section_alignment (dynobj, s, bed->s->log_file_align)) + return FALSE; + htab->srelplt2 = s; + } + + return TRUE; } /* Copy the extra info we tack onto an elf_link_hash_entry. */ static void -elf_i386_copy_indirect_symbol (bed, dir, ind) - struct elf_backend_data *bed; - 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; @@ -843,14 +821,26 @@ elf_i386_copy_indirect_symbol (bed, dir, ind) edir->tls_type = eind->tls_type; eind->tls_type = GOT_UNKNOWN; } - _bfd_elf_link_hash_copy_indirect (bed, dir, ind); + + if (ELIMINATE_COPY_RELOCS + && ind->root.type != bfd_link_hash_indirect + && dir->dynamic_adjusted) + { + /* If called to transfer flags for a weakdef during processing + of elf_adjust_dynamic_symbol, don't copy non_got_ref. + We clear it ourselves for ELIMINATE_COPY_RELOCS. */ + dir->ref_dynamic |= ind->ref_dynamic; + dir->ref_regular |= ind->ref_regular; + dir->ref_regular_nonweak |= ind->ref_regular_nonweak; + dir->needs_plt |= ind->needs_plt; + dir->pointer_equality_needed |= ind->pointer_equality_needed; + } + else + _bfd_elf_link_hash_copy_indirect (bed, dir, ind); } static int -elf_i386_tls_transition (info, r_type, is_local) - struct bfd_link_info *info; - int r_type; - int is_local; +elf_i386_tls_transition (struct bfd_link_info *info, int r_type, int is_local) { if (info->shared) return r_type; @@ -878,12 +868,11 @@ elf_i386_tls_transition (info, r_type, is_local) 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; @@ -892,8 +881,8 @@ 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; @@ -913,16 +902,21 @@ elf_i386_check_relocs (abfd, info, sec, relocs) 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) h = NULL; else - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + { + 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; + } r_type = elf_i386_tls_transition (info, r_type, h == NULL); @@ -945,7 +939,7 @@ elf_i386_check_relocs (abfd, info, sec, relocs) if (h == NULL) continue; - h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; + h->needs_plt = 1; h->plt.refcount += 1; break; @@ -997,10 +991,9 @@ elf_i386_check_relocs (abfd, info, sec, relocs) size = symtab_hdr->sh_info; size *= (sizeof (bfd_signed_vma) + sizeof(char)); - local_got_refcounts = ((bfd_signed_vma *) - bfd_zalloc (abfd, size)); + local_got_refcounts = bfd_zalloc (abfd, size); if (local_got_refcounts == NULL) - return false; + 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); @@ -1022,10 +1015,11 @@ elf_i386_check_relocs (abfd, info, sec, relocs) else { (*_bfd_error_handler) - (_("%s: `%s' accessed both as normal and thread local symbol"), - bfd_archive_filename (abfd), + (_("%B: `%s' accessed both as normal and " + "thread local symbol"), + abfd, h ? h->root.root.string : ""); - return false; + return FALSE; } } @@ -1047,7 +1041,7 @@ elf_i386_check_relocs (abfd, info, sec, relocs) if (htab->elf.dynobj == NULL) htab->elf.dynobj = abfd; if (!create_got_section (htab->elf.dynobj, info)) - return false; + return FALSE; } if (r_type != R_386_TLS_IE) break; @@ -1057,7 +1051,8 @@ elf_i386_check_relocs (abfd, info, sec, relocs) case R_386_TLS_LE: if (!info->shared) break; - /* Fall through */ + info->flags |= DF_STATIC_TLS; + /* Fall through */ case R_386_32: case R_386_PC32: @@ -1069,11 +1064,13 @@ elf_i386_check_relocs (abfd, info, sec, relocs) sections have not yet been mapped to output sections. Tentatively set the flag for now, and correct in adjust_dynamic_symbol. */ - h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; + h->non_got_ref = 1; /* 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->pointer_equality_needed = 1; } /* If we are creating a shared library, and this is a reloc @@ -1103,14 +1100,13 @@ elf_i386_check_relocs (abfd, info, sec, relocs) || (h != NULL && (! info->symbolic || h->root.type == bfd_link_hash_defweak - || (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0)))) - || (!info->shared + || !h->def_regular)))) + || (ELIMINATE_COPY_RELOCS + && !info->shared && (sec->flags & SEC_ALLOC) != 0 && h != NULL && (h->root.type == bfd_link_hash_defweak - || (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0))) + || !h->def_regular))) { struct elf_i386_dyn_relocs *p; struct elf_i386_dyn_relocs **head; @@ -1127,15 +1123,15 @@ elf_i386_check_relocs (abfd, info, sec, relocs) 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) @@ -1147,15 +1143,16 @@ elf_i386_check_relocs (abfd, info, sec, relocs) { flagword flags; - sreloc = bfd_make_section (dynobj, name); flags = (SEC_HAS_CONTENTS | SEC_READONLY | SEC_IN_MEMORY | SEC_LINKER_CREATED); if ((sec->flags & SEC_ALLOC) != 0) flags |= SEC_ALLOC | SEC_LOAD; + sreloc = bfd_make_section_with_flags (dynobj, + name, + flags); 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; } @@ -1176,7 +1173,7 @@ 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); @@ -1186,10 +1183,9 @@ 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; @@ -1206,15 +1202,15 @@ 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: @@ -1222,19 +1218,18 @@ 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 (sec, info, rel, h, sym) - asection *sec; - 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) { @@ -1267,20 +1262,16 @@ elf_i386_gc_mark_hook (sec, info, rel, h, sym) /* 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; - int r_type; - struct elf_link_hash_entry *h; elf_section_data (sec)->local_dynrel = NULL; @@ -1290,87 +1281,79 @@ elf_i386_gc_sweep_hook (abfd, info, sec, relocs) relend = relocs + sec->reloc_count; for (rel = relocs; rel < relend; rel++) - switch ((r_type = elf_i386_tls_transition (info, - ELF32_R_TYPE (rel->r_info), - ELF32_R_SYM (rel->r_info) - >= symtab_hdr->sh_info))) - { - 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; - - 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: - 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; - } - if (r_type != R_386_TLS_IE) - break; - /* Fall through */ + { + unsigned long r_symndx; + unsigned int r_type; + struct elf_link_hash_entry *h = NULL; - case R_386_TLS_LE_32: - case R_386_TLS_LE: - if (!info->shared) - break; - /* Fall through */ + 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; - 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; + 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; + eh = (struct elf_i386_link_hash_entry *) h; - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) + if (p->sec == sec) + { + /* Everything must go for SEC. */ + *pp = p->next; + break; + } + } - if (!info->shared && h->plt.refcount > 0) - h->plt.refcount -= 1; + 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; - eh = (struct elf_i386_link_hash_entry *) h; + 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; - 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_32: + case R_386_PC32: + if (info->shared) + break; + /* Fall through */ - 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_PLT32: + if (h != NULL) + { + if (h->plt.refcount > 0) + h->plt.refcount -= 1; + } + break; - default: - break; - } + default: + break; + } + } - return true; + return TRUE; } /* Adjust a symbol defined by a dynamic object and referenced by a @@ -1379,14 +1362,11 @@ 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; @@ -1394,14 +1374,12 @@ elf_i386_adjust_dynamic_symbol (info, h) will fill in the contents of the procedure linkage table later, when we know the address of the .got section. */ if (h->type == STT_FUNC - || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) + || h->needs_plt) { 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 - && h->root.type != bfd_link_hash_undefweak - && h->root.type != bfd_link_hash_undefined)) + || 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 @@ -1409,10 +1387,10 @@ elf_i386_adjust_dynamic_symbol (info, h) such a case, we don't actually need to build a procedure linkage table, and we can just do a PC32 reloc instead. */ h->plt.offset = (bfd_vma) -1; - h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; + h->needs_plt = 0; } - return true; + return TRUE; } else /* It's possible that we incorrectly decided a .plt reloc was @@ -1425,13 +1403,15 @@ elf_i386_adjust_dynamic_symbol (info, h) /* If this is a weak symbol, and there is a real definition, the processor independent code will have arranged for us to see the real definition first, and we can just use the same value. */ - if (h->weakdef != NULL) + if (h->u.weakdef != NULL) { - BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined - || 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; + BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined + || h->u.weakdef->root.type == bfd_link_hash_defweak); + h->root.u.def.section = h->u.weakdef->root.u.def.section; + h->root.u.def.value = h->u.weakdef->root.u.def.value; + if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) + h->non_got_ref = h->u.weakdef->non_got_ref; + return TRUE; } /* This is a reference to a symbol defined by a dynamic object which @@ -1442,34 +1422,44 @@ 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; + if (!h->non_got_ref) + 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; + h->non_got_ref = 0; + 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; - } + htab = elf_i386_hash_table (info); - /* 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) + /* If there aren't any dynamic relocs in read-only sections, then + we can keep the dynamic relocs and avoid the copy reloc. This + doesn't work on VxWorks, where we can not have dynamic relocations + (other than copy and jump slot relocations) in an executable. */ + if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks) { - h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; - return true; + struct elf_i386_link_hash_entry * eh; + struct elf_i386_dyn_relocs *p; + + 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 (p == NULL) + { + h->non_got_ref = 0; + return TRUE; + } } /* We must allocate the symbol in our .dynbss section, which will @@ -1482,15 +1472,13 @@ elf_i386_adjust_dynamic_symbol (info, h) both the dynamic object and the regular object will refer to the same memory location for the variable. */ - htab = elf_i386_hash_table (info); - /* We must generate a R_386_COPY reloc to tell the dynamic linker to copy the initial value out of the dynamic object and into the runtime process image. */ if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) { - htab->srelbss->_raw_size += sizeof (Elf32_External_Rel); - h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; + htab->srelbss->size += sizeof (Elf32_External_Rel); + h->needs_copy = 1; } /* We need to figure out the alignment required for this symbol. I @@ -1501,41 +1489,28 @@ 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; @@ -1543,7 +1518,7 @@ allocate_dynrelocs (h, inf) struct elf_i386_dyn_relocs *p; if (h->root.type == bfd_link_hash_indirect) - return true; + return TRUE; if (h->root.type == bfd_link_hash_warning) /* When warning symbols are created, they **replace** the "real" @@ -1560,22 +1535,23 @@ allocate_dynrelocs (h, inf) /* 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) + && !h->forced_local) { - 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 @@ -1583,32 +1559,52 @@ allocate_dynrelocs (h, inf) pointers compare as equal between the normal executable and the shared library. */ if (! info->shared - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) + && !h->def_regular) { h->root.u.def.section = s; h->root.u.def.value = h->plt.offset; } /* 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); + + if (htab->is_vxworks && !info->shared) + { + /* VxWorks has a second set of relocations for each PLT entry + in executables. They go in a separate relocation section, + which is processed by the kernel loader. */ + + /* There are two relocations for the initial PLT entry: an + R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an + R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ + + if (h->plt.offset == PLT_ENTRY_SIZE) + htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); + + /* There are two extra relocations for each subsequent PLT entry: + an R_386_32 relocation for the GOT entry, and an R_386_32 + relocation for the PLT entry. */ + + htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2); + } } else { h->plt.offset = (bfd_vma) -1; - h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; + h->needs_plt = 0; } } else { h->plt.offset = (bfd_vma) -1; - h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; + h->needs_plt = 0; } /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary, @@ -1621,24 +1617,24 @@ allocate_dynrelocs (h, inf) 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) + && !h->forced_local) { - 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->_raw_size += 4; + s->size += 4; dyn = htab->elf.dynamic_sections_created; /* R_386_TLS_IE_32 needs one dynamic relocation, R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation, @@ -1646,21 +1642,24 @@ allocate_dynrelocs (h, inf) need two), R_386_TLS_GD needs one if local symbol and two if global. */ if (tls_type == GOT_TLS_IE_BOTH) - htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel); + 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->_raw_size += sizeof (Elf32_External_Rel); + htab->srelgot->size += sizeof (Elf32_External_Rel); else if (tls_type == GOT_TLS_GD) - htab->srelgot->_raw_size += 2 * sizeof (Elf32_External_Rel); - else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)) - htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); + 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 @@ -1670,9 +1669,13 @@ 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; @@ -1686,16 +1689,22 @@ 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 dynamic. */ - if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 - && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) + if (!h->non_got_ref + && ((h->def_dynamic + && !h->def_regular) || (htab->elf.dynamic_sections_created && (h->root.type == bfd_link_hash_undefweak || h->root.type == bfd_link_hash_undefined)))) @@ -1703,10 +1712,10 @@ allocate_dynrelocs (h, inf) /* 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) + && !h->forced_local) { - 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 @@ -1724,18 +1733,16 @@ 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; @@ -1755,23 +1762,22 @@ 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); @@ -1782,12 +1788,12 @@ 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; } } @@ -1826,7 +1832,7 @@ elf_i386_size_dynamic_sections (output_bfd, info) 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; } @@ -1847,19 +1853,19 @@ elf_i386_size_dynamic_sections (output_bfd, info) { if (*local_got > 0) { - *local_got = s->_raw_size; - s->_raw_size += 4; + *local_got = s->size; + s->size += 4; if (*local_tls_type == GOT_TLS_GD || *local_tls_type == GOT_TLS_IE_BOTH) - s->_raw_size += 4; + 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->_raw_size += 2 * sizeof (Elf32_External_Rel); + srel->size += 2 * sizeof (Elf32_External_Rel); else - srel->_raw_size += sizeof (Elf32_External_Rel); + srel->size += sizeof (Elf32_External_Rel); } } else @@ -1871,36 +1877,66 @@ elf_i386_size_dynamic_sections (output_bfd, info) { /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM relocs. */ - htab->tls_ldm_got.offset = htab->sgot->_raw_size; - htab->sgot->_raw_size += 8; - htab->srelgot->_raw_size += sizeof (Elf32_External_Rel); + 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; + if (htab->is_vxworks) + { + /* Save the GOT and PLT symbols in the hash table for easy access. + Mark them as having relocations; they might not, but we won't + know for sure until we build the GOT in finish_dynamic_symbol. */ + + htab->hgot = elf_link_hash_lookup (elf_hash_table (info), + "_GLOBAL_OFFSET_TABLE_", + FALSE, FALSE, FALSE); + if (htab->hgot) + htab->hgot->indx = -2; + htab->hplt = elf_link_hash_lookup (elf_hash_table (info), + "_PROCEDURE_LINKAGE_TABLE_", + FALSE, FALSE, FALSE); + if (htab->hplt) + htab->hplt->indx = -2; + + if (htab->is_vxworks && htab->hplt && htab->splt->flags & SEC_CODE) + htab->hplt->type = STT_FUNC; + } + /* 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) { + bfd_boolean strip_section = TRUE; + if ((s->flags & SEC_LINKER_CREATED) == 0) continue; if (s == htab->splt || s == htab->sgot - || s == htab->sgotplt) + || s == htab->sgotplt + || s == htab->sdynbss) { /* Strip this section if we don't need it; see the comment below. */ + /* We'd like to strip these sections if they aren't needed, but if + we've exported dynamic symbols from them we must leave them. + It's too late to tell BFD to get rid of the symbols. */ + + if (htab->hplt != NULL) + strip_section = FALSE; } 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 && s != htab->srelplt2) + relocs = TRUE; /* We use the reloc_count field as a counter if we need to copy relocs into the output file. */ @@ -1912,7 +1948,7 @@ 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 @@ -1923,19 +1959,22 @@ elf_i386_size_dynamic_sections (output_bfd, info) adjust_dynamic_symbol is called, and it is that function which decides whether anything needs to go into these sections. */ - - _bfd_strip_section_from_output (info, s); + if (strip_section) + s->flags |= SEC_EXCLUDE; continue; } + if ((s->flags & SEC_HAS_CONTENTS) == 0) + continue; + /* Allocate memory for the section contents. We use bfd_zalloc here in case unused entries are not reclaimed before the 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) @@ -1946,21 +1985,21 @@ 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) @@ -1968,7 +2007,7 @@ 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. */ @@ -1979,23 +2018,22 @@ elf_i386_size_dynamic_sections (output_bfd, 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; @@ -2020,7 +2058,7 @@ 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 @@ -2028,46 +2066,39 @@ elf_i386_fake_sections (abfd, hdr, sec) This is PT_TLS segment p_vaddr. */ static bfd_vma -dtpoff_base (info) - struct bfd_link_info *info; +dtpoff_base (struct bfd_link_info *info) { - /* If tls_segment is NULL, we should have signalled an error already. */ - if (elf_hash_table (info)->tls_segment == NULL) + /* 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_segment->start; + 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 (info, address) - struct bfd_link_info *info; - bfd_vma address; +tpoff (struct bfd_link_info *info, bfd_vma address) { - struct elf_link_tls_segment *tls_segment - = elf_hash_table (info)->tls_segment; + struct elf_link_hash_table *htab = elf_hash_table (info); - /* If tls_segment is NULL, we should have signalled an error already. */ - if (tls_segment == NULL) + /* If tls_sec is NULL, we should have signalled an error already. */ + if (htab->tls_sec == NULL) return 0; - return (align_power (tls_segment->size, tls_segment->align) - + tls_segment->start - address); + 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; @@ -2093,30 +2124,33 @@ 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 + 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; @@ -2163,7 +2197,7 @@ 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; @@ -2236,43 +2270,27 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, } 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; + + RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, + r_symndx, symtab_hdr, sym_hashes, + h, sec, relocation, + unresolved_reloc, warned); + } + + if (r_symndx == 0) + { + /* r_symndx will be zero only for relocs against symbols from + removed linkonce sections, or sections discarded by a linker + script. For these relocs, we just want the section contents + zeroed. Avoid any special processing in the switch below. */ + r_type = R_386_NONE; 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; - } + if (howto->pc_relative) + relocation = (input_section->output_section->vma + + input_section->output_offset + + rel->r_offset); } switch (r_type) @@ -2285,16 +2303,15 @@ 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 @@ -2318,7 +2335,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, } } else - unresolved_reloc = false; + unresolved_reloc = FALSE; } else { @@ -2339,20 +2356,20 @@ 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); } @@ -2363,25 +2380,47 @@ 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 + /* Check to make sure it isn't a protected function symbol + for shared library since it may not be local when used + as function address. */ + if (info->shared + && !info->executable + && h + && h->def_regular + && h->type == STT_FUNC + && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED) + { + (*_bfd_error_handler) + (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"), + input_bfd, h->root.root.string); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + /* 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: @@ -2405,55 +2444,49 @@ 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: case R_386_PC32: - /* 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 ((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 - && (((h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_DYNAMIC) != 0 - && (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0) + && !h->non_got_ref + && ((h->def_dynamic + && !h->def_regular) || 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; - relocate = false; + 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; + skip = TRUE; else if (outrel.r_offset == (bfd_vma) -2) - skip = true, relocate = true; + skip = TRUE, relocate = TRUE; outrel.r_offset += (input_section->output_section->vma + input_section->output_offset); @@ -2464,13 +2497,12 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, && (r_type == R_386_PC32 || !info->shared || !info->symbolic - || (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0)) + || !h->def_regular)) 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); } @@ -2478,8 +2510,8 @@ 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 @@ -2494,9 +2526,9 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, case R_386_TLS_IE: if (info->shared) { - Elf_Internal_Rel outrel; + Elf_Internal_Rela outrel; + bfd_byte *loc; asection *sreloc; - Elf32_External_Rel *loc; outrel.r_offset = rel->r_offset + input_section->output_section->vma @@ -2505,8 +2537,8 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, sreloc = elf_section_data (input_section)->sreloc; 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); } /* Fall through */ @@ -2546,7 +2578,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, 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->_raw_size); + BFD_ASSERT (rel->r_offset + 9 <= input_section->size); BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4) == 0xe8); @@ -2572,7 +2604,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, else { BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4); - if (rel->r_offset + 10 <= input_section->_raw_size + if (rel->r_offset + 10 <= input_section->size && bfd_get_8 (input_bfd, contents + rel->r_offset + 9) == 0x90) { @@ -2615,37 +2647,43 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, 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->_raw_size); - if (val != 0xa1) - { - BFD_ASSERT (rel->r_offset >= 2); - type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2); - } + 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 - 2); - } - else if (type == 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), + bfd_put_8 (output_bfd, 0xb8, contents + rel->r_offset - 1); } - else if (type == 0x03) + else { - /* 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); + 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; + } } - else - BFD_FAIL (); bfd_put_32 (output_bfd, -tpoff (info, relocation), contents + rel->r_offset); continue; @@ -2666,7 +2704,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, 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->_raw_size); + BFD_ASSERT (rel->r_offset + 4 <= input_section->size); BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4); if (type == 0x8b) { @@ -2719,10 +2757,10 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, if ((off & 1) != 0) off &= ~1; - else + else { - Elf_Internal_Rel outrel; - Elf32_External_Rel *loc; + Elf_Internal_Rela outrel; + bfd_byte *loc; int dr_type, indx; if (htab->srelgot == NULL) @@ -2748,8 +2786,8 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, bfd_put_32 (output_bfd, 0, htab->sgot->contents + off); outrel.r_info = ELF32_R_INFO (indx, dr_type); - 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, &outrel, loc); if (r_type == R_386_TLS_GD) @@ -2769,9 +2807,8 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, R_386_TLS_DTPOFF32); outrel.r_offset += 4; htab->srelgot->reloc_count++; - loc++; - bfd_elf32_swap_reloc_out (output_bfd, &outrel, - loc); + loc += sizeof (Elf32_External_Rel); + bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); } } else if (tls_type == GOT_TLS_IE_BOTH) @@ -2782,7 +2819,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF); outrel.r_offset += 4; htab->srelgot->reloc_count++; - loc++; + loc += sizeof (Elf32_External_Rel); bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc); } @@ -2796,13 +2833,16 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, abort (); if (r_type == ELF32_R_TYPE (rel->r_info)) { - relocation = htab->sgot->output_offset + off; + 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 += htab->sgot->output_section->vma; - unresolved_reloc = false; + relocation += g_o_t; + unresolved_reloc = FALSE; } else { @@ -2813,7 +2853,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, 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->_raw_size); + 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); @@ -2837,7 +2877,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, /* 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->_raw_size); + 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) @@ -2858,7 +2898,11 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, if (tls_type == GOT_TLS_IE_BOTH) off += 4; } - bfd_put_32 (output_bfd, htab->sgot->output_offset + off, + 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++; @@ -2881,7 +2925,7 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, == 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->_raw_size); + 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); @@ -2901,8 +2945,8 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, off &= ~1; else { - Elf_Internal_Rel outrel; - Elf32_External_Rel *loc; + Elf_Internal_Rela outrel; + bfd_byte *loc; if (htab->srelgot == NULL) abort (); @@ -2915,17 +2959,20 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, bfd_put_32 (output_bfd, 0, htab->sgot->contents + off + 4); outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32); - 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, &outrel, loc); htab->tls_ldm_got.offset |= 1; } - relocation = htab->sgot->output_offset + off; - unresolved_reloc = false; + 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) + if (info->shared || (input_section->flags & SEC_CODE) == 0) relocation -= dtpoff_base (info); else /* When converting LDO to LE, we must negate. */ @@ -2936,9 +2983,9 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, case R_386_TLS_LE: if (info->shared) { - Elf_Internal_Rel outrel; + Elf_Internal_Rela outrel; asection *sreloc; - Elf32_External_Rel *loc; + bfd_byte *loc; int indx; outrel.r_offset = rel->r_offset @@ -2955,8 +3002,8 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, sreloc = elf_section_data (input_section)->sreloc; 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 (indx) continue; @@ -2980,20 +3027,20 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, not process them. */ if (unresolved_reloc && !((input_section->flags & SEC_DEBUGGING) != 0 - && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) + && h->def_dynamic)) { (*_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), + (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"), + input_bfd, + input_section, (long) rel->r_offset, h->root.root.string); - return false; + 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) { @@ -3007,7 +3054,7 @@ 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); } @@ -3015,34 +3062,33 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, if (r == bfd_reloc_overflow) { if (! ((*info->callbacks->reloc_overflow) - (info, name, howto->name, (bfd_vma) 0, - input_bfd, input_section, rel->r_offset))) - return false; + (info, (h ? &h->root : NULL), name, howto->name, + (bfd_vma) 0, input_bfd, input_section, + rel->r_offset))) + 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; @@ -3052,8 +3098,8 @@ 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. */ @@ -3085,6 +3131,42 @@ elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym) + htab->sgotplt->output_offset + got_offset), htab->splt->contents + h->plt.offset + 2); + + if (htab->is_vxworks) + { + int s, k, reloc_index; + + /* Create the R_386_32 relocation referencing the GOT + for this PLT entry. */ + + /* S: Current slot number (zero-based). */ + s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE; + /* K: Number of relocations for PLTResolve. */ + if (info->shared) + k = PLTRESOLVE_RELOCS_SHLIB; + else + k = PLTRESOLVE_RELOCS; + /* Skip the PLTresolve relocations, and the relocations for + the other PLT slots. */ + reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS; + loc = (htab->srelplt2->contents + reloc_index + * sizeof (Elf32_External_Rel)); + + rel.r_offset = (htab->splt->output_section->vma + + htab->splt->output_offset + + h->plt.offset + 2), + rel.r_info = ELF32_R_INFO (htab->hgot->indx, R_386_32); + bfd_elf32_swap_reloc_out (output_bfd, &rel, loc); + + /* Create the R_386_32 relocation referencing the beginning of + the PLT for this GOT entry. */ + rel.r_offset = (htab->sgotplt->output_section->vma + + htab->sgotplt->output_offset + + got_offset); + rel.r_info = ELF32_R_INFO (htab->hplt->indx, R_386_32); + bfd_elf32_swap_reloc_out (output_bfd, &rel, + loc + sizeof (Elf32_External_Rel)); + } } else { @@ -3112,17 +3194,22 @@ 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) + if (!h->def_regular) { /* 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->pointer_equality_needed) + sym->st_value = 0; } } @@ -3130,8 +3217,8 @@ elf_i386_finish_dynamic_symbol (output_bfd, info, h, sym) && 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. */ @@ -3149,10 +3236,7 @@ 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); @@ -3165,15 +3249,15 @@ 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) + if (h->needs_copy) { - Elf_Internal_Rel rel; - Elf32_External_Rel *loc; + Elf_Internal_Rela rel; + bfd_byte *loc; /* This symbol needs a copy reloc. Set it up. */ @@ -3187,27 +3271,29 @@ 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); } - /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ + /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. + On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it + is relative to the ".got" section. */ if (strcmp (h->root.root.string, "_DYNAMIC") == 0 - || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) + || (strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 + && !htab->is_vxworks)) 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; @@ -3222,10 +3308,9 @@ 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; @@ -3243,7 +3328,7 @@ 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; @@ -3257,19 +3342,18 @@ 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: @@ -3278,18 +3362,23 @@ 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; } @@ -3297,15 +3386,23 @@ 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, - elf_i386_pic_plt0_entry, PLT_ENTRY_SIZE); + { + memcpy (htab->splt->contents, elf_i386_pic_plt0_entry, + sizeof (elf_i386_pic_plt0_entry)); + memset (htab->splt->contents + sizeof (elf_i386_pic_plt0_entry), + htab->plt0_pad_byte, + PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry)); + } else { - memcpy (htab->splt->contents, - elf_i386_plt0_entry, PLT_ENTRY_SIZE); + memcpy (htab->splt->contents, elf_i386_plt0_entry, + sizeof(elf_i386_plt0_entry)); + memset (htab->splt->contents + sizeof (elf_i386_plt0_entry), + htab->plt0_pad_byte, + PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry)); bfd_put_32 (output_bfd, (htab->sgotplt->output_section->vma + htab->sgotplt->output_offset @@ -3316,40 +3413,110 @@ elf_i386_finish_dynamic_sections (output_bfd, info) + htab->sgotplt->output_offset + 8), htab->splt->contents + 8); + + if (htab->is_vxworks) + { + Elf_Internal_Rela rel; + struct elf_link_hash_entry *hgot; + + /* The VxWorks GOT is relocated by the dynamic linker. + Therefore, we must emit relocations rather than + simply computing the values now. */ + hgot = elf_link_hash_lookup (elf_hash_table (info), + "_GLOBAL_OFFSET_TABLE_", + FALSE, FALSE, FALSE); + /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4. + On IA32 we use REL relocations so the addend goes in + the PLT directly. */ + rel.r_offset = (htab->splt->output_section->vma + + htab->splt->output_offset + + 2); + rel.r_info = ELF32_R_INFO (hgot->indx, R_386_32); + bfd_elf32_swap_reloc_out (output_bfd, &rel, + htab->srelplt2->contents); + /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8. */ + rel.r_offset = (htab->splt->output_section->vma + + htab->splt->output_offset + + 8); + rel.r_info = ELF32_R_INFO (hgot->indx, R_386_32); + bfd_elf32_swap_reloc_out (output_bfd, &rel, + htab->srelplt2->contents + + sizeof (Elf32_External_Rel)); + } } /* UnixWare sets the entsize of .plt to 4, although that doesn't really seem like the right value. */ elf_section_data (htab->splt->output_section) ->this_hdr.sh_entsize = 4; + + /* Correct the .rel.plt.unloaded relocations. */ + if (htab->is_vxworks && !info->shared) + { + int num_plts = (htab->splt->size / PLT_ENTRY_SIZE) - 1; + unsigned char *p; + + p = htab->srelplt2->contents; + if (info->shared) + p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel); + else + p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel); + + for (; num_plts; num_plts--) + { + Elf_Internal_Rela rel; + bfd_elf32_swap_reloc_in (output_bfd, p, &rel); + rel.r_info = ELF32_R_INFO (htab->hgot->indx, R_386_32); + bfd_elf32_swap_reloc_out (output_bfd, &rel, p); + p += sizeof (Elf32_External_Rel); + + bfd_elf32_swap_reloc_in (output_bfd, p, &rel); + rel.r_info = ELF32_R_INFO (htab->hplt->indx, R_386_32); + bfd_elf32_swap_reloc_out (output_bfd, &rel, p); + p += sizeof (Elf32_External_Rel); + } + } } } 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; } -#ifndef ELF_ARCH + #define TARGET_LITTLE_SYM bfd_elf32_i386_vec #define TARGET_LITTLE_NAME "elf32-i386" #define ELF_ARCH bfd_arch_i386 #define ELF_MACHINE_CODE EM_386 #define ELF_MAXPAGESIZE 0x1000 -#endif /* ELF_ARCH */ #define elf_backend_can_gc_sections 1 #define elf_backend_can_refcount 1 @@ -3357,13 +3524,12 @@ 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 elf_backend_object_p elf_i386_object_p #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 @@ -3383,7 +3549,111 @@ 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 -#ifndef ELF32_I386_C_INCLUDED #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" + +/* VxWorks support. */ + +#undef TARGET_LITTLE_SYM +#define TARGET_LITTLE_SYM bfd_elf32_i386_vxworks_vec +#undef TARGET_LITTLE_NAME +#define TARGET_LITTLE_NAME "elf32-i386-vxworks" + + +/* Like elf_i386_link_hash_table_create but with tweaks for VxWorks. */ + +static struct bfd_link_hash_table * +elf_i386_vxworks_link_hash_table_create (bfd *abfd) +{ + struct bfd_link_hash_table *ret; + struct elf_i386_link_hash_table *htab; + + ret = elf_i386_link_hash_table_create (abfd); + if (ret) + { + htab = (struct elf_i386_link_hash_table *) ret; + htab->is_vxworks = 1; + htab->plt0_pad_byte = 0x90; + } + + return ret; +} + + +/* Tweak magic VxWorks symbols as they are written to the output file. */ +static bfd_boolean +elf_i386_vxworks_link_output_symbol_hook (struct bfd_link_info *info + ATTRIBUTE_UNUSED, + const char *name, + Elf_Internal_Sym *sym, + asection *input_sec ATTRIBUTE_UNUSED, + struct elf_link_hash_entry *h + ATTRIBUTE_UNUSED) +{ + /* Ignore the first dummy symbol. */ + if (!name) + return TRUE; + + return elf_vxworks_link_output_symbol_hook (name, sym); +} + +#undef elf_backend_post_process_headers +#undef bfd_elf32_bfd_link_hash_table_create +#define bfd_elf32_bfd_link_hash_table_create \ + elf_i386_vxworks_link_hash_table_create +#undef elf_backend_add_symbol_hook +#define elf_backend_add_symbol_hook \ + elf_vxworks_add_symbol_hook +#undef elf_backend_link_output_symbol_hook +#define elf_backend_link_output_symbol_hook \ + elf_i386_vxworks_link_output_symbol_hook +#undef elf_backend_emit_relocs +#define elf_backend_emit_relocs elf_vxworks_emit_relocs +#undef elf_backend_final_write_processing +#define elf_backend_final_write_processing \ + elf_vxworks_final_write_processing + +/* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so + define it. */ +#undef elf_backend_want_plt_sym +#define elf_backend_want_plt_sym 1 + +#undef elf32_bed +#define elf32_bed elf32_i386_vxworks_bed + +#include "elf32-target.h"