X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=bfd%2Felf32-i370.c;h=808292703313f8c3d4da447d4fca0f580fab8bd5;hb=62dc7e9a46fdeb1f2f772bda48a0605cc00e6bf8;hp=3f9c9c1e210e0d42ed304c44ad3fc8f36bb84814;hpb=c5643d219ee32b31e8c66b8eb4057b5be63c17e6;p=pf3gnuchains%2Fpf3gnuchains4x.git diff --git a/bfd/elf32-i370.c b/bfd/elf32-i370.c index 3f9c9c1e21..8082927033 100644 --- a/bfd/elf32-i370.c +++ b/bfd/elf32-i370.c @@ -1,65 +1,39 @@ /* i370-specific support for 32-bit ELF - Copyright 1994, 1995, 1996, 1997, 1998, 2000, 2001 - Free Software Foundation, Inc. + Copyright 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004, + 2005, 2006, 2007, 2008, 2010, 2011 Free Software Foundation, Inc. Written by Ian Lance Taylor, Cygnus Support. Hacked by Linas Vepstas for i370 linas@linas.org -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 3 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. */ /* This file is based on a preliminary PowerPC ELF ABI. But its been hacked on for the IBM 360/370 architectures. Basically, the 31bit relocation works, and just about everything else is a wild card. In particular, don't expect shared libs or - dynamic loading to work ... its never been tested ... -*/ + dynamic loading to work ... its never been tested. */ -#include "bfd.h" #include "sysdep.h" +#include "bfd.h" #include "bfdlink.h" #include "libbfd.h" #include "elf-bfd.h" #include "elf/i370.h" -#define USE_RELA /* we want RELA relocations, not REL */ - -/* i370 relocations */ -/* Note that there is really just one relocation that we currently - * support (and only one that we seem to need, at the moment), and - * that is the 31-bit address relocation. Note that the 370/390 - * only supports a 31-bit (2GB) address space. - */ -enum i370_reloc_type -{ - R_I370_NONE = 0, - R_I370_ADDR31 = 1, - R_I370_ADDR32 = 2, - R_I370_ADDR16 = 3, - R_I370_REL31 = 4, - R_I370_REL32 = 5, - R_I370_ADDR12 = 6, - R_I370_REL12 = 7, - R_I370_ADDR8 = 8, - R_I370_REL8 = 9, - R_I370_COPY = 10, - R_I370_RELATIVE = 11, - - R_I370_max -}; - static reloc_howto_type *i370_elf_howto_table[ (int)R_I370_max ]; static reloc_howto_type i370_elf_howto_raw[] = @@ -69,150 +43,150 @@ static reloc_howto_type i370_elf_howto_raw[] = 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_I370_NONE", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* A standard 31 bit relocation. */ HOWTO (R_I370_ADDR31, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 31, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_I370_ADDR31", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0x7fffffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* A standard 32 bit relocation. */ HOWTO (R_I370_ADDR32, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_I370_ADDR32", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* A standard 16 bit relocation. */ HOWTO (R_I370_ADDR16, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 16, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_I370_ADDR16", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ - /* 31-bit PC relative */ + /* 31-bit PC relative. */ HOWTO (R_I370_REL31, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 31, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_I370_REL31", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0x7fffffff, /* dst_mask */ - true), /* pcrel_offset */ + TRUE), /* pcrel_offset */ - /* 32-bit PC relative */ + /* 32-bit PC relative. */ HOWTO (R_I370_REL32, /* type */ 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_I370_REL32", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffffffff, /* dst_mask */ - true), /* pcrel_offset */ + TRUE), /* pcrel_offset */ /* A standard 12 bit relocation. */ HOWTO (R_I370_ADDR12, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 12, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_I370_ADDR12", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xfff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ - /* 12-bit PC relative */ + /* 12-bit PC relative. */ HOWTO (R_I370_REL12, /* type */ 0, /* rightshift */ 1, /* size (0 = byte, 1 = short, 2 = long) */ 12, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_I370_REL12", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xfff, /* dst_mask */ - true), /* pcrel_offset */ + TRUE), /* pcrel_offset */ /* A standard 8 bit relocation. */ HOWTO (R_I370_ADDR8, /* type */ 0, /* rightshift */ 0, /* size (0 = byte, 1 = short, 2 = long) */ 8, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_I370_ADDR8", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ - /* 8-bit PC relative */ + /* 8-bit PC relative. */ HOWTO (R_I370_REL8, /* type */ 0, /* rightshift */ 0, /* size (0 = byte, 1 = short, 2 = long) */ 8, /* bitsize */ - true, /* pc_relative */ + TRUE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_I370_REL8", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xff, /* dst_mask */ - true), /* pcrel_offset */ + TRUE), /* pcrel_offset */ /* This is used only by the dynamic linker. The symbol should exist both in the object being run and in some shared library. The @@ -223,15 +197,15 @@ static reloc_howto_type i370_elf_howto_raw[] = 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_I370_COPY", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ /* Used only by the dynamic linker. When the object is run, this longword is set to the load address of the object, plus the @@ -240,30 +214,22 @@ static reloc_howto_type i370_elf_howto_raw[] = 0, /* rightshift */ 2, /* size (0 = byte, 1 = short, 2 = long) */ 32, /* bitsize */ - false, /* pc_relative */ + FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_bitfield, /* complain_on_overflow */ bfd_elf_generic_reloc, /* special_function */ "R_I370_RELATIVE", /* name */ - false, /* partial_inplace */ + FALSE, /* partial_inplace */ 0, /* src_mask */ 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ + FALSE), /* pcrel_offset */ }; -static void i370_elf_howto_init PARAMS ((void)); -static reloc_howto_type *i370_elf_reloc_type_lookup - PARAMS ((bfd *, bfd_reloc_code_real_type)); - -static void i370_elf_info_to_howto PARAMS ((bfd *abfd, arelent *cache_ptr, - Elf32_Internal_Rela *dst)); -static boolean i370_elf_set_private_flags PARAMS ((bfd *, flagword)); - /* Initialize the i370_elf_howto_table, so that linear accesses can be done. */ static void -i370_elf_howto_init () +i370_elf_howto_init (void) { unsigned int i, type; @@ -274,21 +240,21 @@ i370_elf_howto_init () i370_elf_howto_table[type] = &i370_elf_howto_raw[i]; } } - + static reloc_howto_type * -i370_elf_reloc_type_lookup (abfd, code) - bfd *abfd ATTRIBUTE_UNUSED; - bfd_reloc_code_real_type code; +i370_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, + bfd_reloc_code_real_type code) { enum i370_reloc_type i370_reloc = R_I370_NONE; - if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table if needed */ + if (!i370_elf_howto_table[ R_I370_ADDR31 ]) + /* Initialize howto table if needed. */ i370_elf_howto_init (); - switch ((int)code) + switch ((int) code) { default: - return (reloc_howto_type *)NULL; + return NULL; case BFD_RELOC_NONE: i370_reloc = R_I370_NONE; break; case BFD_RELOC_32: i370_reloc = R_I370_ADDR31; break; @@ -301,48 +267,21 @@ i370_elf_reloc_type_lookup (abfd, code) return i370_elf_howto_table[ (int)i370_reloc ]; }; -static boolean i370_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *)); -static boolean i370_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); - -static boolean i370_elf_relocate_section PARAMS ((bfd *, - struct bfd_link_info *info, - bfd *, - asection *, - bfd_byte *, - Elf_Internal_Rela *relocs, - Elf_Internal_Sym *local_syms, - asection **)); -static void i370_elf_post_process_headers - PARAMS ((bfd *, struct bfd_link_info *)); - -static boolean i370_elf_create_dynamic_sections PARAMS ((bfd *, - struct bfd_link_info *)); - -static boolean i370_elf_section_from_shdr PARAMS ((bfd *, - Elf32_Internal_Shdr *, - char *)); -static boolean i370_elf_fake_sections PARAMS ((bfd *, - Elf32_Internal_Shdr *, - asection *)); -#if 0 -static elf_linker_section_t *i370_elf_create_linker_section - PARAMS ((bfd *abfd, - struct bfd_link_info *info, - enum elf_linker_section_enum)); -#endif -static boolean i370_elf_check_relocs PARAMS ((bfd *, - struct bfd_link_info *, - asection *, - const Elf_Internal_Rela *)); - -static boolean i370_elf_adjust_dynamic_symbol PARAMS ((struct bfd_link_info *, - struct elf_link_hash_entry *)); - -static boolean i370_elf_adjust_dynindx PARAMS ((struct elf_link_hash_entry *, PTR)); +static reloc_howto_type * +i370_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, + const char *r_name) +{ + unsigned int i; -static boolean i370_elf_size_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); + for (i = 0; + i < sizeof (i370_elf_howto_raw) / sizeof (i370_elf_howto_raw[0]); + i++) + if (i370_elf_howto_raw[i].name != NULL + && strcasecmp (i370_elf_howto_raw[i].name, r_name) == 0) + return &i370_elf_howto_raw[i]; -static boolean i370_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); + return NULL; +} /* The name of the dynamic interpreter. This is put in the .interp section. */ @@ -352,264 +291,156 @@ static boolean i370_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_ /* Set the howto pointer for an i370 ELF reloc. */ static void -i370_elf_info_to_howto (abfd, cache_ptr, dst) - bfd *abfd ATTRIBUTE_UNUSED; - arelent *cache_ptr; - Elf32_Internal_Rela *dst; +i370_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, + arelent *cache_ptr, + Elf_Internal_Rela *dst) { - if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table */ + if (!i370_elf_howto_table[ R_I370_ADDR31 ]) + /* Initialize howto table. */ i370_elf_howto_init (); BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_I370_max); cache_ptr->howto = i370_elf_howto_table[ELF32_R_TYPE (dst->r_info)]; } -/* hack alert -- the following several routines look generic to me ... - * why are we bothering with them ??? - */ +/* Hack alert -- the following several routines look generic to me ... + why are we bothering with them ? */ /* Function to set whether a module needs the -mrelocatable bit set. */ -static boolean -i370_elf_set_private_flags (abfd, flags) - bfd *abfd; - flagword flags; + +static bfd_boolean +i370_elf_set_private_flags (bfd *abfd, flagword flags) { BFD_ASSERT (!elf_flags_init (abfd) || elf_elfheader (abfd)->e_flags == flags); elf_elfheader (abfd)->e_flags = flags; - elf_flags_init (abfd) = true; - return true; -} - -/* Copy backend specific data from one object module to another */ -static boolean -i370_elf_copy_private_bfd_data (ibfd, obfd) - bfd *ibfd; - bfd *obfd; -{ - if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour - || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return true; - - BFD_ASSERT (!elf_flags_init (obfd) - || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); - - elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; - elf_flags_init (obfd) = true; - return true; + elf_flags_init (abfd) = TRUE; + return TRUE; } /* Merge backend specific data from an object file to the output - object file when linking */ -static boolean -i370_elf_merge_private_bfd_data (ibfd, obfd) - bfd *ibfd; - bfd *obfd; + object file when linking. */ + +static bfd_boolean +i370_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) { flagword old_flags; flagword new_flags; if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return true; + return TRUE; new_flags = elf_elfheader (ibfd)->e_flags; old_flags = elf_elfheader (obfd)->e_flags; - if (!elf_flags_init (obfd)) /* First call, no flags set */ + if (!elf_flags_init (obfd)) /* First call, no flags set. */ { - elf_flags_init (obfd) = true; + elf_flags_init (obfd) = TRUE; elf_elfheader (obfd)->e_flags = new_flags; } - else if (new_flags == old_flags) /* Compatible flags are ok */ + else if (new_flags == old_flags) /* Compatible flags are ok. */ ; - else /* Incompatible flags */ + else /* Incompatible flags. */ { (*_bfd_error_handler) - ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)", - bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags); + ("%B: uses different e_flags (0x%lx) fields than previous modules (0x%lx)", + ibfd, (long) new_flags, (long) old_flags); bfd_set_error (bfd_error_bad_value); - return false; + return FALSE; } - return true; + return TRUE; } /* Handle an i370 specific section when reading an object file. This is called when elfcode.h finds a section with an unknown type. */ /* XXX hack alert bogus This routine is mostly all junk and almost - * certainly does the wrong thing. Its here simply because it does - * just enough to allow glibc-2.1 ld.so to compile & link. - */ - -static boolean -i370_elf_section_from_shdr (abfd, hdr, name) - bfd *abfd; - Elf32_Internal_Shdr *hdr; - char *name; + certainly does the wrong thing. Its here simply because it does + just enough to allow glibc-2.1 ld.so to compile & link. */ + +static bfd_boolean +i370_elf_section_from_shdr (bfd *abfd, + Elf_Internal_Shdr *hdr, + const char *name, + int shindex) { asection *newsect; flagword flags; - if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) - return false; + if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) + return FALSE; newsect = hdr->bfd_section; flags = bfd_get_section_flags (abfd, newsect); - if (hdr->sh_flags & SHF_EXCLUDE) - flags |= SEC_EXCLUDE; - if (hdr->sh_type == SHT_ORDERED) flags |= SEC_SORT_ENTRIES; bfd_set_section_flags (abfd, newsect, flags); - return true; + return TRUE; } /* Set up any other section flags and such that may be necessary. */ /* XXX hack alert bogus This routine is mostly all junk and almost - * certainly does the wrong thing. Its here simply because it does - * just enough to allow glibc-2.1 ld.so to compile & link. - */ - -static boolean -i370_elf_fake_sections (abfd, shdr, asect) - bfd *abfd ATTRIBUTE_UNUSED; - Elf32_Internal_Shdr *shdr; - asection *asect; + certainly does the wrong thing. Its here simply because it does + just enough to allow glibc-2.1 ld.so to compile & link. */ + +static bfd_boolean +i370_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED, + Elf_Internal_Shdr *shdr, + asection *asect) { - if ((asect->flags & SEC_EXCLUDE) != 0) + if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE) shdr->sh_flags |= SHF_EXCLUDE; if ((asect->flags & SEC_SORT_ENTRIES) != 0) shdr->sh_type = SHT_ORDERED; - return true; -} - -#if 0 -/* Create a special linker section */ -/* XXX hack alert bogus This routine is mostly all junk and almost - * certainly does the wrong thing. Its here simply because it does - * just enough to allow glibc-2.1 ld.so to compile & link. - */ - -static elf_linker_section_t * -i370_elf_create_linker_section (abfd, info, which) - bfd *abfd; - struct bfd_link_info *info; - enum elf_linker_section_enum which; -{ - bfd *dynobj = elf_hash_table (info)->dynobj; - elf_linker_section_t *lsect; - - /* Record the first bfd section that needs the special section */ - if (!dynobj) - dynobj = elf_hash_table (info)->dynobj = abfd; - - /* If this is the first time, create the section */ - lsect = elf_linker_section (dynobj, which); - if (!lsect) - { - elf_linker_section_t defaults; - static elf_linker_section_t zero_section; - - defaults = zero_section; - defaults.which = which; - defaults.hole_written_p = false; - defaults.alignment = 2; - - /* Both of these sections are (technically) created by the user - putting data in them, so they shouldn't be marked - SEC_LINKER_CREATED. - - The linker creates them so it has somewhere to attach their - respective symbols. In fact, if they were empty it would - be OK to leave the symbol set to 0 (or any random number), because - the appropriate register should never be used. */ - defaults.flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS - | SEC_IN_MEMORY); - - switch (which) - { - default: - (*_bfd_error_handler) ("%s: Unknown special linker type %d", - bfd_archive_filename (abfd), - (int) which); - - bfd_set_error (bfd_error_bad_value); - return (elf_linker_section_t *)0; - - case LINKER_SECTION_SDATA: /* .sdata/.sbss section */ - defaults.name = ".sdata"; - defaults.rel_name = ".rela.sdata"; - defaults.bss_name = ".sbss"; - defaults.sym_name = "_SDA_BASE_"; - defaults.sym_offset = 32768; - break; - - case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */ - defaults.name = ".sdata2"; - defaults.rel_name = ".rela.sdata2"; - defaults.bss_name = ".sbss2"; - defaults.sym_name = "_SDA2_BASE_"; - defaults.sym_offset = 32768; - defaults.flags |= SEC_READONLY; - break; - } - - lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults); - } - - return lsect; + return TRUE; } -#endif /* We have to create .dynsbss and .rela.sbss here so that they get mapped to output sections (just like _bfd_elf_create_dynamic_sections has to create .dynbss and .rela.bss). */ /* XXX hack alert bogus This routine is mostly all junk and almost - * certainly does the wrong thing. Its here simply because it does - * just enough to allow glibc-2.1 ld.so to compile & link. - */ - -static boolean -i370_elf_create_dynamic_sections (abfd, info) - bfd *abfd; - struct bfd_link_info *info; + certainly does the wrong thing. Its here simply because it does + just enough to allow glibc-2.1 ld.so to compile & link. */ + +static bfd_boolean +i370_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) { - register asection *s; + asection *s; flagword flags; if (!_bfd_elf_create_dynamic_sections(abfd, info)) - return false; + return FALSE; flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); - s = bfd_make_section (abfd, ".dynsbss"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, SEC_ALLOC)) - return false; + s = bfd_make_section_with_flags (abfd, ".dynsbss", + SEC_ALLOC | SEC_LINKER_CREATED); + if (s == NULL) + return FALSE; if (! info->shared) { - s = bfd_make_section (abfd, ".rela.sbss"); + s = bfd_make_section_with_flags (abfd, ".rela.sbss", + flags | SEC_READONLY); if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) || ! bfd_set_section_alignment (abfd, s, 2)) - return false; + return FALSE; } - /* xxx beats me, seem to need a rela.text ... */ - s = bfd_make_section (abfd, ".rela.text"); + /* XXX beats me, seem to need a rela.text ... */ + s = bfd_make_section_with_flags (abfd, ".rela.text", + flags | SEC_READONLY); if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) || ! bfd_set_section_alignment (abfd, s, 2)) - return false; - return true; + return FALSE; + return TRUE; } /* Adjust a symbol defined by a dynamic object and referenced by a @@ -618,18 +449,15 @@ i370_elf_create_dynamic_sections (abfd, info) change the definition to something the rest of the link can understand. */ /* XXX hack alert bogus This routine is mostly all junk and almost - * certainly does the wrong thing. Its here simply because it does - * just enough to allow glibc-2.1 ld.so to compile & link. - */ - -static boolean -i370_elf_adjust_dynamic_symbol (info, h) - struct bfd_link_info *info; - struct elf_link_hash_entry *h; + certainly does the wrong thing. Its here simply because it does + just enough to allow glibc-2.1 ld.so to compile & link. */ + +static bfd_boolean +i370_elf_adjust_dynamic_symbol (struct bfd_link_info *info, + struct elf_link_hash_entry *h) { bfd *dynobj = elf_hash_table (info)->dynobj; asection *s; - unsigned int power_of_two; #ifdef DEBUG fprintf (stderr, "i370_elf_adjust_dynamic_symbol called for %s\n", @@ -638,29 +466,26 @@ i370_elf_adjust_dynamic_symbol (info, h) /* Make sure we know what is going on here. */ BFD_ASSERT (dynobj != NULL - && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) - || h->weakdef != NULL - || ((h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_DYNAMIC) != 0 - && (h->elf_link_hash_flags - & ELF_LINK_HASH_REF_REGULAR) != 0 - && (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0))); + && (h->needs_plt + || h->u.weakdef != NULL + || (h->def_dynamic + && h->ref_regular + && !h->def_regular))); s = bfd_get_section_by_name (dynobj, ".rela.text"); BFD_ASSERT (s != NULL); - s->_raw_size += sizeof (Elf32_External_Rela); + s->size += sizeof (Elf32_External_Rela); /* 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; + return TRUE; } /* This is a reference to a symbol defined by a dynamic object which @@ -671,7 +496,14 @@ i370_elf_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 (h->size == 0) + { + (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), + h->root.root.string); + return TRUE; + } /* We must allocate the symbol in our .dynbss section, which will become part of the .bss section of the executable. There will be @@ -706,77 +538,50 @@ i370_elf_adjust_dynamic_symbol (info, h) else srel = bfd_get_section_by_name (dynobj, ".rela.bss"); BFD_ASSERT (srel != NULL); - srel->_raw_size += sizeof (Elf32_External_Rela); - h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; - } - - /* We need to figure out the alignment required for this symbol. I - have no idea how ELF linkers handle this. */ - power_of_two = bfd_log2 (h->size); - if (power_of_two > 4) - power_of_two = 4; - - /* Apply the required alignment. */ - s->_raw_size = BFD_ALIGN (s->_raw_size, - (bfd_size_type) (1 << power_of_two)); - if (power_of_two > bfd_get_section_alignment (dynobj, s)) - { - if (! bfd_set_section_alignment (dynobj, s, power_of_two)) - return false; + srel->size += sizeof (Elf32_External_Rela); + h->needs_copy = 1; } - /* 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; - - /* Increment the section size to make room for the symbol. */ - s->_raw_size += h->size; - - return true; + return _bfd_elf_adjust_dynamic_copy (h, s); } /* Increment the index of a dynamic symbol by a given amount. Called via elf_link_hash_traverse. */ /* XXX hack alert bogus This routine is mostly all junk and almost - * certainly does the wrong thing. Its here simply because it does - * just enough to allow glibc-2.1 ld.so to compile & link. - */ - -static boolean -i370_elf_adjust_dynindx (h, cparg) - struct elf_link_hash_entry *h; - PTR cparg; + certainly does the wrong thing. Its here simply because it does + just enough to allow glibc-2.1 ld.so to compile & link. */ + +static bfd_boolean +i370_elf_adjust_dynindx (struct elf_link_hash_entry *h, void * cparg) { int *cp = (int *) cparg; #ifdef DEBUG fprintf (stderr, - "i370_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n", + "i370_elf_adjust_dynindx called, h->dynindx = %ld, *cp = %d\n", h->dynindx, *cp); #endif if (h->dynindx != -1) h->dynindx += *cp; - return true; + return TRUE; } /* Set the sizes of the dynamic sections. */ /* XXX hack alert bogus This routine is mostly all junk and almost - * certainly does the wrong thing. Its here simply because it does - * just enough to allow glibc-2.1 ld.so to compile & link. - */ - -static boolean -i370_elf_size_dynamic_sections (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; + certainly does the wrong thing. Its here simply because it does + just enough to allow glibc-2.1 ld.so to compile & link. */ + +static bfd_boolean +i370_elf_size_dynamic_sections (bfd *output_bfd, + struct bfd_link_info *info) { bfd *dynobj; asection *s; - boolean plt; - boolean relocs; - boolean reltext; + bfd_boolean plt; + bfd_boolean relocs; + bfd_boolean reltext; #ifdef DEBUG fprintf (stderr, "i370_elf_size_dynamic_sections called\n"); @@ -788,11 +593,11 @@ i370_elf_size_dynamic_sections (output_bfd, info) if (elf_hash_table (info)->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"); BFD_ASSERT (s != NULL); - s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; + s->size = sizeof ELF_DYNAMIC_INTERPRETER; s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; } } @@ -805,27 +610,26 @@ i370_elf_size_dynamic_sections (output_bfd, info) stripped from the output file below. */ static char *rela_sections[] = { ".rela.got", ".rela.sdata", ".rela.sdata2", ".rela.sbss", - (char *)0 }; + NULL }; char **p; - for (p = rela_sections; *p != (char *)0; p++) + for (p = rela_sections; *p != NULL; p++) { s = bfd_get_section_by_name (dynobj, *p); if (s != NULL) - s->_raw_size = 0; + s->size = 0; } } /* The check_relocs and adjust_dynamic_symbol entry points have determined the sizes of the various dynamic sections. Allocate memory for them. */ - plt = false; - relocs = false; - reltext = false; + plt = FALSE; + relocs = FALSE; + reltext = FALSE; for (s = dynobj->sections; s != NULL; s = s->next) { const char *name; - boolean strip; if ((s->flags & SEC_LINKER_CREATED) == 0) continue; @@ -833,44 +637,21 @@ i370_elf_size_dynamic_sections (output_bfd, info) /* It's OK to base decisions on the section name, because none of the dynobj section names depend upon the input files. */ name = bfd_get_section_name (dynobj, s); - strip = false; if (strcmp (name, ".plt") == 0) { - if (s->_raw_size == 0) - { - /* Strip this section if we don't need it; see the - comment below. */ - strip = true; - } - else - { - /* Remember whether there is a PLT. */ - plt = true; - } + /* Remember whether there is a PLT. */ + plt = s->size != 0; } - else if (strncmp (name, ".rela", 5) == 0) + else if (CONST_STRNEQ (name, ".rela")) { - if (s->_raw_size == 0) - { - /* If we don't need this section, strip it from the - output file. This is mostly to handle .rela.bss and - .rela.plt. We must create both sections in - create_dynamic_sections, because they must be created - before the linker maps input sections to output - sections. The linker does that before - adjust_dynamic_symbol is called, and it is that - function which decides whether anything needs to go - into these sections. */ - strip = true; - } - else + if (s->size != 0) { asection *target; const char *outname; /* Remember whether there are any relocation sections. */ - relocs = true; + relocs = TRUE; /* If this relocation section applies to a read only section, then we probably need a DT_TEXTREL entry. */ @@ -880,7 +661,7 @@ i370_elf_size_dynamic_sections (output_bfd, info) if (target != NULL && (target->flags & SEC_READONLY) != 0 && (target->flags & SEC_ALLOC) != 0) - reltext = true; + reltext = TRUE; /* We use the reloc_count field as a counter if we need to copy relocs into the output file. */ @@ -889,29 +670,36 @@ i370_elf_size_dynamic_sections (output_bfd, info) } else if (strcmp (name, ".got") != 0 && strcmp (name, ".sdata") != 0 - && strcmp (name, ".sdata2") != 0) + && strcmp (name, ".sdata2") != 0 + && strcmp (name, ".dynbss") != 0 + && strcmp (name, ".dynsbss") != 0) { /* It's not one of our sections, so don't allocate space. */ continue; } - if (strip) + if (s->size == 0) { - asection **spp; - - for (spp = &s->output_section->owner->sections; - *spp != s->output_section; - spp = &(*spp)->next) - ; - *spp = s->output_section->next; - --s->output_section->owner->section_count; - + /* If we don't need this section, strip it from the + output file. This is mostly to handle .rela.bss and + .rela.plt. We must create both sections in + create_dynamic_sections, because they must be created + before the linker maps input sections to output + sections. The linker does that before + adjust_dynamic_symbol is called, and it is that + function which decides whether anything needs to go + into these sections. */ + s->flags |= SEC_EXCLUDE; continue; } + + if ((s->flags & SEC_HAS_CONTENTS) == 0) + continue; + /* Allocate memory for the section contents. */ - s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); - if (s->contents == NULL && s->_raw_size != 0) - return false; + s->contents = bfd_zalloc (dynobj, s->size); + if (s->contents == NULL) + return FALSE; } if (elf_hash_table (info)->dynamic_sections_created) @@ -922,12 +710,12 @@ i370_elf_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 (!add_dynamic_entry (DT_DEBUG, 0)) - return false; + return FALSE; } if (plt) @@ -936,7 +724,7 @@ i370_elf_size_dynamic_sections (output_bfd, info) || !add_dynamic_entry (DT_PLTRELSZ, 0) || !add_dynamic_entry (DT_PLTREL, DT_RELA) || !add_dynamic_entry (DT_JMPREL, 0)) - return false; + return FALSE; } if (relocs) @@ -944,13 +732,13 @@ i370_elf_size_dynamic_sections (output_bfd, info) if (!add_dynamic_entry (DT_RELA, 0) || !add_dynamic_entry (DT_RELASZ, 0) || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) - return false; + return FALSE; } if (reltext) { if (!add_dynamic_entry (DT_TEXTREL, 0)) - return false; + return FALSE; info->flags |= DF_TEXTREL; } } @@ -965,7 +753,7 @@ i370_elf_size_dynamic_sections (output_bfd, info) FIXME: We assume that there will never be relocations to locations in linker-created sections that do not have externally-visible names. Instead, we should work out precisely - which sections relocations are targetted at. */ + which sections relocations are targeted at. */ if (info->shared) { int c; @@ -988,50 +776,44 @@ i370_elf_size_dynamic_sections (output_bfd, info) } elf_link_hash_traverse (elf_hash_table (info), - i370_elf_adjust_dynindx, - (PTR) &c); + i370_elf_adjust_dynindx, & c); elf_hash_table (info)->dynsymcount += c; } - return true; + return TRUE; } /* Look through the relocs for a section during the first phase, and allocate space in the global offset table or procedure linkage table. */ /* XXX hack alert bogus This routine is mostly all junk and almost - * certainly does the wrong thing. Its here simply because it does - * just enough to allow glibc-2.1 ld.so to compile & link. - */ - -static boolean -i370_elf_check_relocs (abfd, info, sec, relocs) - bfd *abfd; - struct bfd_link_info *info; - asection *sec; - const Elf_Internal_Rela *relocs; + certainly does the wrong thing. Its here simply because it does + just enough to allow glibc-2.1 ld.so to compile & link. */ + +static bfd_boolean +i370_elf_check_relocs (bfd *abfd, + struct bfd_link_info *info, + asection *sec, + const Elf_Internal_Rela *relocs) { bfd *dynobj; Elf_Internal_Shdr *symtab_hdr; struct elf_link_hash_entry **sym_hashes; const Elf_Internal_Rela *rel; const Elf_Internal_Rela *rel_end; - bfd_vma *local_got_offsets; asection *sreloc; - if (info->relocateable) - return true; + if (info->relocatable) + return TRUE; #ifdef DEBUG - fprintf (stderr, "i370_elf_check_relocs called for section %s in %s\n", - bfd_get_section_name (abfd, sec), - bfd_archive_filename (abfd)); + _bfd_error_handler ("i370_elf_check_relocs called for section %A in %B", + sec, abfd); #endif dynobj = elf_hash_table (info)->dynobj; symtab_hdr = &elf_tdata (abfd)->symtab_hdr; sym_hashes = elf_sym_hashes (abfd); - local_got_offsets = elf_local_got_offsets (abfd); sreloc = NULL; @@ -1045,7 +827,12 @@ i370_elf_check_relocs (abfd, info, sec, relocs) 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; + } if (info->shared) { @@ -1057,36 +844,14 @@ i370_elf_check_relocs (abfd, info, sec, relocs) #endif if (sreloc == NULL) { - const char *name; + sreloc = _bfd_elf_make_dynamic_reloc_section + (sec, dynobj, 2, abfd, /*rela?*/ TRUE); - name = (bfd_elf_string_from_elf_section - (abfd, - elf_elfheader (abfd)->e_shstrndx, - elf_section_data (sec)->rel_hdr.sh_name)); - if (name == NULL) - return false; - - BFD_ASSERT (strncmp (name, ".rela", 5) == 0 - && strcmp (bfd_get_section_name (abfd, sec), name + 5) == 0); - - sreloc = bfd_get_section_by_name (dynobj, name); if (sreloc == NULL) - { - 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; - if (sreloc == NULL - || ! bfd_set_section_flags (dynobj, sreloc, flags) - || ! bfd_set_section_alignment (dynobj, sreloc, 2)) - return false; - } + return FALSE; } - sreloc->_raw_size += sizeof (Elf32_External_Rela); + sreloc->size += sizeof (Elf32_External_Rela); /* FIXME: We should here do what the m68k and i386 backends do: if the reloc is pc-relative, record it @@ -1097,19 +862,17 @@ i370_elf_check_relocs (abfd, info, sec, relocs) } } - return true; + return TRUE; } /* Finish up the dynamic sections. */ /* XXX hack alert bogus This routine is mostly all junk and almost - * certainly does the wrong thing. Its here simply because it does - * just enough to allow glibc-2.1 ld.so to compile & link. - */ - -static boolean -i370_elf_finish_dynamic_sections (output_bfd, info) - bfd *output_bfd; - struct bfd_link_info *info; + certainly does the wrong thing. Its here simply because it does + just enough to allow glibc-2.1 ld.so to compile & link. */ + +static bfd_boolean +i370_elf_finish_dynamic_sections (bfd *output_bfd, + struct bfd_link_info *info) { asection *sdyn; bfd *dynobj = elf_hash_table (info)->dynobj; @@ -1130,21 +893,21 @@ i370_elf_finish_dynamic_sections (output_bfd, info) BFD_ASSERT (splt != NULL && sdyn != NULL); 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; const char *name; - boolean size; + bfd_boolean size; bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); switch (dyn.d_tag) { - case DT_PLTGOT: name = ".plt"; size = false; break; - case DT_PLTRELSZ: name = ".rela.plt"; size = true; break; - case DT_JMPREL: name = ".rela.plt"; size = false; break; - default: name = NULL; size = false; break; + case DT_PLTGOT: name = ".plt"; size = FALSE; break; + case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break; + case DT_JMPREL: name = ".rela.plt"; size = FALSE; break; + default: name = NULL; size = FALSE; break; } if (name != NULL) @@ -1159,32 +922,23 @@ i370_elf_finish_dynamic_sections (output_bfd, info) if (! size) dyn.d_un.d_ptr = s->vma; else - { - if (s->_cooked_size != 0) - dyn.d_un.d_val = s->_cooked_size; - else - dyn.d_un.d_val = s->_raw_size; - } + dyn.d_un.d_val = s->size; } bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); } } } - /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can - easily find the address of the _GLOBAL_OFFSET_TABLE_. */ -/* XXX this is clearly very wrong for the 370 arch */ - if (sgot) + if (sgot && sgot->size != 0) { unsigned char *contents = sgot->contents; - bfd_put_32 (output_bfd, (bfd_vma) 0x4e800021 /* blrl */, contents); if (sdyn == NULL) - bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4); + bfd_put_32 (output_bfd, (bfd_vma) 0, contents); else bfd_put_32 (output_bfd, sdyn->output_section->vma + sdyn->output_offset, - contents+4); + contents); elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; } @@ -1205,10 +959,12 @@ i370_elf_finish_dynamic_sections (output_bfd, info) sym.st_name = 0; sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); sym.st_other = 0; + sym.st_target_internal = 0; for (s = output_bfd->sections; s != NULL; s = s->next) { int indx, dindx; + Elf32_External_Sym *esym; sym.st_value = s->vma; @@ -1224,20 +980,18 @@ i370_elf_finish_dynamic_sections (output_bfd, info) sym.st_shndx = indx; - bfd_elf32_swap_symbol_out (output_bfd, &sym, - (PTR) (((Elf32_External_Sym *) - sdynsym->contents) - + dindx)); + esym = (Elf32_External_Sym *) sdynsym->contents + dindx; + bfd_elf32_swap_symbol_out (output_bfd, &sym, esym, NULL); } } /* Set the sh_info field of the output .dynsym section to the - index of the first global symbol. */ + index of the first global symbol. */ elf_section_data (sdynsym->output_section)->this_hdr.sh_info = maxdindx + 1; } - return true; + return TRUE; } /* The RELOCATE_SECTION function is called by the ELF backend linker @@ -1249,7 +1003,7 @@ i370_elf_finish_dynamic_sections (output_bfd, info) This function is responsible for adjust the section contents as necessary, and (if using Rela relocs and generating a - relocateable output file) adjusting the reloc addend as + relocatable output file) adjusting the reloc addend as necessary. This function does not have to worry about setting the reloc @@ -1263,113 +1017,79 @@ i370_elf_finish_dynamic_sections (output_bfd, info) The global hash table entry for the global symbols can be found via elf_sym_hashes (input_bfd). - When generating relocateable output, this function must handle + When generating relocatable output, this function must handle STB_LOCAL/STT_SECTION symbols specially. The output symbol is going to be the section symbol corresponding to the output section, which means that the addend must be adjusted accordingly. */ -static boolean -i370_elf_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 +i370_elf_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) { - Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; + Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); - bfd *dynobj = elf_hash_table (info)->dynobj; - Elf_Internal_Rela *rel = relocs; - Elf_Internal_Rela *relend = relocs + input_section->reloc_count; - asection *sreloc = NULL; - bfd_vma *local_got_offsets; - boolean ret = true; + Elf_Internal_Rela *rel = relocs; + Elf_Internal_Rela *relend = relocs + input_section->reloc_count; + asection *sreloc = NULL; + bfd_boolean ret = TRUE; #ifdef DEBUG - fprintf (stderr, "i370_elf_relocate_section called for %s section %s, %ld relocations%s\n", - bfd_archive_filename (input_bfd), - bfd_section_name(input_bfd, input_section), - (long) input_section->reloc_count, - (info->relocateable) ? " (relocatable)" : ""); + _bfd_error_handler ("i370_elf_relocate_section called for %B section %A, %ld relocations%s", + input_bfd, input_section, + (long) input_section->reloc_count, + (info->relocatable) ? " (relocatable)" : ""); #endif - if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table if needed */ + if (!i370_elf_howto_table[ R_I370_ADDR31 ]) + /* Initialize howto table if needed. */ i370_elf_howto_init (); - local_got_offsets = elf_local_got_offsets (input_bfd); - for (; rel < relend; rel++) { - enum i370_reloc_type r_type = (enum i370_reloc_type)ELF32_R_TYPE (rel->r_info); - bfd_vma offset = rel->r_offset; - bfd_vma addend = rel->r_addend; - bfd_reloc_status_type r = bfd_reloc_other; - Elf_Internal_Sym *sym = (Elf_Internal_Sym *)0; - asection *sec = (asection *)0; - struct elf_link_hash_entry *h = (struct elf_link_hash_entry *)0; - const char *sym_name = (const char *)0; + enum i370_reloc_type r_type = (enum i370_reloc_type) ELF32_R_TYPE (rel->r_info); + bfd_vma offset = rel->r_offset; + bfd_vma addend = rel->r_addend; + bfd_reloc_status_type r = bfd_reloc_other; + Elf_Internal_Sym *sym = NULL; + asection *sec = NULL; + struct elf_link_hash_entry * h = NULL; + const char *sym_name = NULL; reloc_howto_type *howto; unsigned long r_symndx; bfd_vma relocation; - /* Unknown relocation handling */ - if ((unsigned)r_type >= (unsigned)R_I370_max + /* Unknown relocation handling. */ + if ((unsigned) r_type >= (unsigned) R_I370_max || !i370_elf_howto_table[(int)r_type]) { - (*_bfd_error_handler) ("%s: unknown relocation type %d", - bfd_archive_filename (input_bfd), + (*_bfd_error_handler) ("%B: unknown relocation type %d", + input_bfd, (int) r_type); bfd_set_error (bfd_error_bad_value); - ret = false; + ret = FALSE; continue; } - howto = i370_elf_howto_table[(int)r_type]; + howto = i370_elf_howto_table[(int) r_type]; r_symndx = ELF32_R_SYM (rel->r_info); + relocation = 0; - if (info->relocateable) - { - /* This is a relocateable link. We don't have to change - anything, unless the reloc is against a section symbol, - in which case we have to adjust according to where the - section symbol winds up in the output section. */ - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - if ((unsigned)ELF_ST_TYPE (sym->st_info) == STT_SECTION) - { - sec = local_sections[r_symndx]; - addend = rel->r_addend += sec->output_offset + sym->st_value; - } - } - -#ifdef DEBUG - fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n", - howto->name, - (int)r_type, - r_symndx, - (long)offset, - (long)addend); -#endif - continue; - } - - /* This is a final link. */ if (r_symndx < symtab_hdr->sh_info) { sym = local_syms + r_symndx; sec = local_sections[r_symndx]; sym_name = ""; - relocation = (sec->output_section->vma - + sec->output_offset - + sym->st_value); + relocation = _bfd_elf_rela_local_sym (output_bfd, sym, & sec, rel); + addend = rel->r_addend; } else { @@ -1384,76 +1104,81 @@ i370_elf_relocate_section (output_bfd, info, input_bfd, input_section, sec = h->root.u.def.section; if (info->shared && ((! info->symbolic && h->dynindx != -1) - || (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0) + || !h->def_regular) && (input_section->flags & SEC_ALLOC) != 0 && (r_type == R_I370_ADDR31 || r_type == R_I370_COPY || r_type == R_I370_ADDR16 || r_type == R_I370_RELATIVE)) - { - /* In these cases, we don't need the relocation - value. We check specially because in some - obscure cases sec->output_section will be NULL. */ - relocation = 0; - } + /* In these cases, we don't need the relocation + value. We check specially because in some + obscure cases sec->output_section will be NULL. */ + ; else relocation = (h->root.u.def.value + sec->output_section->vma + sec->output_offset); } else if (h->root.type == bfd_link_hash_undefweak) - relocation = 0; - else if (info->shared + ; + else if (info->unresolved_syms_in_objects == RM_IGNORE && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) - relocation = 0; - else + ; + else if (!info->relocatable) { - (*info->callbacks->undefined_symbol) (info, - h->root.root.string, - input_bfd, - input_section, - rel->r_offset, - true); - ret = false; - continue; + if ((*info->callbacks->undefined_symbol) + (info, h->root.root.string, input_bfd, + input_section, rel->r_offset, + (info->unresolved_syms_in_objects == RM_GENERATE_ERROR + || ELF_ST_VISIBILITY (h->other)))) + { + ret = FALSE; + continue; + } } } + if (sec != NULL && elf_discarded_section (sec)) + RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, + rel, relend, howto, contents); + + if (info->relocatable) + continue; + switch ((int) r_type) { default: (*_bfd_error_handler) - ("%s: unknown relocation type %d for symbol %s", - bfd_archive_filename (input_bfd), - (int) r_type, sym_name); + ("%B: unknown relocation type %d for symbol %s", + input_bfd, (int) r_type, sym_name); bfd_set_error (bfd_error_bad_value); - ret = false; + ret = FALSE; continue; - case (int)R_I370_NONE: + case (int) R_I370_NONE: continue; /* Relocations that may need to be propagated if this is a shared - object. */ - case (int)R_I370_REL31: + object. */ + case (int) R_I370_REL31: /* If these relocations are not to a named symbol, they can be handled right here, no need to bother the dynamic linker. */ if (h == NULL || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) break; - /* fall through */ + /* Fall through. */ /* Relocations that always need to be propagated if this is a shared - object. */ - case (int)R_I370_ADDR31: - case (int)R_I370_ADDR16: + object. */ + case (int) R_I370_ADDR31: + case (int) R_I370_ADDR16: if (info->shared - && r_symndx != 0) + && r_symndx != STN_UNDEF) { Elf_Internal_Rela outrel; - boolean skip; + bfd_byte *loc; + int skip; #ifdef DEBUG fprintf (stderr, @@ -1462,58 +1187,35 @@ i370_elf_relocate_section (output_bfd, info, input_bfd, input_section, #endif /* When generating a shared object, these relocations - are copied into the output file to be resolved at run - time. */ + are copied into the output file to be resolved at run + time. */ if (sreloc == NULL) { - const char *name; - - name = (bfd_elf_string_from_elf_section - (input_bfd, - elf_elfheader (input_bfd)->e_shstrndx, - elf_section_data (input_section)->rel_hdr.sh_name)); - if (name == NULL) - return false; - - BFD_ASSERT (strncmp (name, ".rela", 5) == 0 - && strcmp (bfd_get_section_name (input_bfd, - input_section), - name + 5) == 0); - - sreloc = bfd_get_section_by_name (dynobj, name); - BFD_ASSERT (sreloc != NULL); + sreloc = _bfd_elf_get_dynamic_reloc_section + (input_bfd, input_section, /*rela?*/ TRUE); + if (sreloc == NULL) + return FALSE; } - skip = false; - - if (elf_section_data (input_section)->stab_info == NULL) - outrel.r_offset = rel->r_offset; - else - { - bfd_vma off; - - off = (_bfd_stab_section_offset - (output_bfd, &elf_hash_table (info)->stab_info, - input_section, - &elf_section_data (input_section)->stab_info, - rel->r_offset)); - if (off == (bfd_vma) -1) - skip = true; - outrel.r_offset = off; - } + skip = 0; + outrel.r_offset = + _bfd_elf_section_offset (output_bfd, info, input_section, + rel->r_offset); + if (outrel.r_offset == (bfd_vma) -1 + || outrel.r_offset == (bfd_vma) -2) + skip = (int) outrel.r_offset; outrel.r_offset += (input_section->output_section->vma + input_section->output_offset); if (skip) memset (&outrel, 0, sizeof outrel); /* h->dynindx may be -1 if this symbol was marked to - become local. */ + become local. */ else if (h != NULL && ((! info->symbolic && h->dynindx != -1) - || (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0)) + || !h->def_regular)) { BFD_ASSERT (h->dynindx != -1); outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); @@ -1530,33 +1232,36 @@ i370_elf_relocate_section (output_bfd, info, input_bfd, input_section, { long indx; - if (h == NULL) - sec = local_sections[r_symndx]; - else - { - BFD_ASSERT (h->root.type == bfd_link_hash_defined - || (h->root.type - == bfd_link_hash_defweak)); - sec = h->root.u.def.section; - } - if (sec != NULL && bfd_is_abs_section (sec)) + if (bfd_is_abs_section (sec)) indx = 0; else if (sec == NULL || sec->owner == NULL) { bfd_set_error (bfd_error_bad_value); - return false; + return FALSE; } else { asection *osec; + /* We are turning this relocation into one + against a section symbol. It would be + proper to subtract the symbol's value, + osec->vma, from the emitted reloc addend, + but ld.so expects buggy relocs. */ osec = sec->output_section; indx = elf_section_data (osec)->dynindx; - BFD_ASSERT(indx > 0); + if (indx == 0) + { + struct elf_link_hash_table *htab; + htab = elf_hash_table (info); + osec = htab->text_index_section; + indx = elf_section_data (osec)->dynindx; + } + BFD_ASSERT (indx != 0); #ifdef DEBUG if (indx <= 0) { - printf ("indx=%d section=%s flags=%08x name=%s\n", + printf ("indx=%ld section=%s flags=%08x name=%s\n", indx, osec->name, osec->flags, h->root.root.string); } @@ -1568,32 +1273,30 @@ i370_elf_relocate_section (output_bfd, info, input_bfd, input_section, } } - bfd_elf32_swap_reloca_out (output_bfd, &outrel, - (((Elf32_External_Rela *) - sreloc->contents) - + sreloc->reloc_count)); - ++sreloc->reloc_count; + loc = sreloc->contents; + loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); + bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); /* This reloc will be computed at runtime, so there's no - need to do anything now, unless this is a RELATIVE - reloc in an unallocated section. */ - if (skip + need to do anything now, unless this is a RELATIVE + reloc in an unallocated section. */ + if (skip == -1 || (input_section->flags & SEC_ALLOC) != 0 || ELF32_R_TYPE (outrel.r_info) != R_I370_RELATIVE) continue; } break; - case (int)R_I370_COPY: - case (int)R_I370_RELATIVE: + case (int) R_I370_COPY: + case (int) R_I370_RELATIVE: (*_bfd_error_handler) - ("%s: Relocation %s is not yet supported for symbol %s.", - bfd_archive_filename (input_bfd), + ("%B: Relocation %s is not yet supported for symbol %s.", + input_bfd, i370_elf_howto_table[(int) r_type]->name, sym_name); bfd_set_error (bfd_error_invalid_operation); - ret = false; + ret = FALSE; continue; } @@ -1603,21 +1306,16 @@ i370_elf_relocate_section (output_bfd, info, input_bfd, input_section, (int)r_type, sym_name, r_symndx, - (long)offset, - (long)addend); + (long) offset, + (long) addend); #endif - r = _bfd_final_link_relocate (howto, - input_bfd, - input_section, - contents, - offset, - relocation, - addend); + r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, + offset, relocation, addend); if (r != bfd_reloc_ok) { - ret = false; + ret = FALSE; switch (r) { default: @@ -1628,7 +1326,7 @@ i370_elf_relocate_section (output_bfd, info, input_bfd, input_section, const char *name; if (h != NULL) - name = h->root.root.string; + name = NULL; else { name = bfd_elf_string_from_elf_section (input_bfd, @@ -1642,6 +1340,7 @@ i370_elf_relocate_section (output_bfd, info, input_bfd, input_section, } (*info->callbacks->reloc_overflow) (info, + (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, @@ -1650,7 +1349,6 @@ i370_elf_relocate_section (output_bfd, info, input_bfd, input_section, offset); } break; - } } } @@ -1661,17 +1359,6 @@ i370_elf_relocate_section (output_bfd, info, input_bfd, input_section, return ret; } - -static void -i370_elf_post_process_headers (abfd, link_info) - bfd * abfd; - struct bfd_link_info * link_info ATTRIBUTE_UNUSED; -{ - Elf_Internal_Ehdr * i_ehdrp; /* Elf file header, internal form */ - - i_ehdrp = elf_elfheader (abfd); - i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX; -} #define TARGET_BIG_SYM bfd_elf32_i370_vec #define TARGET_BIG_NAME "elf32-i370" @@ -1681,57 +1368,40 @@ i370_elf_post_process_headers (abfd, link_info) #define ELF_MACHINE_ALT1 EM_I370_OLD #endif #define ELF_MAXPAGESIZE 0x1000 +#define ELF_OSABI ELFOSABI_GNU + #define elf_info_to_howto i370_elf_info_to_howto #define elf_backend_plt_not_loaded 1 -#define elf_backend_got_symbol_offset 4 +#define elf_backend_rela_normal 1 #define bfd_elf32_bfd_reloc_type_lookup i370_elf_reloc_type_lookup +#define bfd_elf32_bfd_reloc_name_lookup i370_elf_reloc_name_lookup #define bfd_elf32_bfd_set_private_flags i370_elf_set_private_flags -#define bfd_elf32_bfd_copy_private_bfd_data i370_elf_copy_private_bfd_data #define bfd_elf32_bfd_merge_private_bfd_data i370_elf_merge_private_bfd_data #define elf_backend_relocate_section i370_elf_relocate_section -/* dynamic loader support is mostly broken; just enough here to be able to - * link glibc's ld.so without errors. - */ +/* Dynamic loader support is mostly broken; just enough here to be able to + link glibc's ld.so without errors. */ #define elf_backend_create_dynamic_sections i370_elf_create_dynamic_sections #define elf_backend_size_dynamic_sections i370_elf_size_dynamic_sections +#define elf_backend_init_index_section _bfd_elf_init_1_index_section #define elf_backend_finish_dynamic_sections i370_elf_finish_dynamic_sections #define elf_backend_fake_sections i370_elf_fake_sections #define elf_backend_section_from_shdr i370_elf_section_from_shdr #define elf_backend_adjust_dynamic_symbol i370_elf_adjust_dynamic_symbol #define elf_backend_check_relocs i370_elf_check_relocs +#define elf_backend_post_process_headers _bfd_elf_set_osabi -/* -#define elf_backend_add_symbol_hook i370_elf_add_symbol_hook -#define elf_backend_finish_dynamic_symbol i370_elf_finish_dynamic_symbol -#define elf_backend_additional_program_headers i370_elf_additional_program_headers -#define elf_backend_modify_segment_map i370_elf_modify_segment_map -*/ - -#define elf_backend_post_process_headers i370_elf_post_process_headers - -static int i370_noop PARAMS ((void)); - -static int i370_noop () +static int +i370_noop (void) { return 1; } -/* we need to define these at least as no-ops to link glibc ld.so */ - -#define elf_backend_add_symbol_hook \ - (boolean (*) PARAMS ((bfd *, struct bfd_link_info *, \ - const Elf_Internal_Sym *, const char **, flagword *, \ - asection **, bfd_vma *))) i370_noop #define elf_backend_finish_dynamic_symbol \ - (boolean (*) PARAMS ((bfd *, struct bfd_link_info *, \ - struct elf_link_hash_entry *, \ - Elf_Internal_Sym *))) i370_noop -#define elf_backend_additional_program_headers \ - (int (*) PARAMS ((bfd *))) i370_noop -#define elf_backend_modify_segment_map \ - (boolean (*) PARAMS ((bfd *))) i370_noop + (bfd_boolean (*) \ + (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, \ + Elf_Internal_Sym *)) i370_noop #include "elf32-target.h"