diff options
Diffstat (limited to 'bfd/elf32-i370.c')
| -rw-r--r-- | bfd/elf32-i370.c | 1722 |
1 files changed, 0 insertions, 1722 deletions
diff --git a/bfd/elf32-i370.c b/bfd/elf32-i370.c deleted file mode 100644 index d70ba53bc6d..00000000000 --- a/bfd/elf32-i370.c +++ /dev/null @@ -1,1722 +0,0 @@ -/* i370-specific support for 32-bit ELF - Copyright 1994, 1995, 1996, 1997, 1998, 2000, 2001 - 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 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. - -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. */ - -/* 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 ... -*/ - -#include "bfd.h" -#include "sysdep.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[] = -{ - /* This reloc does nothing. */ - HOWTO (R_I370_NONE, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_NONE", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - 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 */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_ADDR31", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0x7fffffff, /* dst_mask */ - 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 */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_ADDR32", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - 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 */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_ADDR16", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffff, /* dst_mask */ - false), /* pcrel_offset */ - - /* 31-bit PC relative */ - HOWTO (R_I370_REL31, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 31, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_REL31", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0x7fffffff, /* dst_mask */ - true), /* pcrel_offset */ - - /* 32-bit PC relative */ - HOWTO (R_I370_REL32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_REL32", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - 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 */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_ADDR12", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xfff, /* dst_mask */ - false), /* pcrel_offset */ - - /* 12-bit PC relative */ - HOWTO (R_I370_REL12, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 12, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_REL12", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xfff, /* dst_mask */ - 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 */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_ADDR8", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xff, /* dst_mask */ - false), /* pcrel_offset */ - - /* 8-bit PC relative */ - HOWTO (R_I370_REL8, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - true, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_REL8", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xff, /* dst_mask */ - 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 - dynamic linker copies the data addressed by the symbol from the - shared library into the object, because the object being - run has to have the data at some particular address. */ - HOWTO (R_I370_COPY, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_COPY", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - 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 - addend. */ - HOWTO (R_I370_RELATIVE, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_I370_RELATIVE", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0xffffffff, /* dst_mask */ - false), /* pcrel_offset */ - -}; - -static void i370_elf_howto_init PARAMS ((void)); -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 () -{ - unsigned int i, type; - - for (i = 0; i < sizeof (i370_elf_howto_raw) / sizeof (i370_elf_howto_raw[0]); i++) - { - type = i370_elf_howto_raw[i].type; - BFD_ASSERT (type < sizeof (i370_elf_howto_table) / sizeof (i370_elf_howto_table[0])); - 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; -{ - enum i370_reloc_type i370_reloc = R_I370_NONE; - - if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table if needed */ - i370_elf_howto_init (); - - switch ((int)code) - { - default: - return (reloc_howto_type *)NULL; - - case BFD_RELOC_NONE: i370_reloc = R_I370_NONE; break; - case BFD_RELOC_32: i370_reloc = R_I370_ADDR31; break; - case BFD_RELOC_16: i370_reloc = R_I370_ADDR16; break; - case BFD_RELOC_32_PCREL: i370_reloc = R_I370_REL31; break; - case BFD_RELOC_CTOR: i370_reloc = R_I370_ADDR31; break; - case BFD_RELOC_I370_D12: i370_reloc = R_I370_ADDR12; break; - } - - 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 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 boolean i370_elf_size_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); - -static boolean i370_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *)); - -/* The name of the dynamic interpreter. This is put in the .interp - section. */ - -#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so" - -/* 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; -{ - 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 ??? - */ -/* Function to set whether a module needs the -mrelocatable bit set. */ -static boolean -i370_elf_set_private_flags (abfd, 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; -} - -/* 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; -{ - 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; - - new_flags = elf_elfheader (ibfd)->e_flags; - old_flags = elf_elfheader (obfd)->e_flags; - if (!elf_flags_init (obfd)) /* First call, no flags set */ - { - elf_flags_init (obfd) = true; - elf_elfheader (obfd)->e_flags = new_flags; - } - - else if (new_flags == old_flags) /* Compatible flags are ok */ - ; - - else /* Incompatible flags */ - { - (*_bfd_error_handler) - ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)", - bfd_get_filename (ibfd), (long)new_flags, (long)old_flags); - - bfd_set_error (bfd_error_bad_value); - return false; - } - - 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; -{ - asection *newsect; - flagword flags; - - if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) - 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; -} - -/* 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; -{ - if ((asect->flags & SEC_EXCLUDE) != 0) - 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_get_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; -} -#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; -{ - register asection *s; - flagword flags; - - if (!_bfd_elf_create_dynamic_sections(abfd, info)) - 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; - - if (! info->shared) - { - s = bfd_make_section (abfd, ".rela.sbss"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) - || ! bfd_set_section_alignment (abfd, s, 2)) - return false; - } - - /* xxx beats me, seem to need a rela.text ... */ - s = bfd_make_section (abfd, ".rela.text"); - if (s == NULL - || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) - || ! bfd_set_section_alignment (abfd, s, 2)) - return false; - return true; -} - -/* Adjust a symbol defined by a dynamic object and referenced by a - regular object. The current definition is in some section of the - dynamic object, but we're not including those sections. We have to - 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; -{ - 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", - h->root.root.string); -#endif - - /* 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))); - - s = bfd_get_section_by_name (dynobj, ".rela.text"); - BFD_ASSERT (s != NULL); - s->_raw_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) - { - 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; - } - - /* This is a reference to a symbol defined by a dynamic object which - is not a function. */ - - /* If we are creating a shared library, we must presume that the - only references to the symbol are via the global offset table. - For such cases we need not do anything here; the relocations will - be handled correctly by relocate_section. */ - if (info->shared) - 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 - an entry for this symbol in the .dynsym section. The dynamic - object will contain position independent code, so all references - from the dynamic object to this symbol will go through the global - offset table. The dynamic linker will use the .dynsym entry to - determine the address it must put in the global offset table, so - both the dynamic object and the regular object will refer to the - same memory location for the variable. - - Of course, if the symbol is sufficiently small, we must instead - allocate it in .sbss. FIXME: It would be better to do this if and - only if there were actually SDAREL relocs for that symbol. */ - - if (h->size <= elf_gp_size (dynobj)) - s = bfd_get_section_by_name (dynobj, ".dynsbss"); - else - s = bfd_get_section_by_name (dynobj, ".dynbss"); - BFD_ASSERT (s != NULL); - - /* We must generate a R_I370_COPY reloc to tell the dynamic linker to - copy the initial value out of the dynamic object and into the - runtime process image. We need to remember the offset into the - .rela.bss section we are going to use. */ - if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) - { - asection *srel; - - if (h->size <= elf_gp_size (dynobj)) - srel = bfd_get_section_by_name (dynobj, ".rela.sbss"); - 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; - } - - /* 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; -} - -/* 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; -{ - int *cp = (int *) cparg; - -#ifdef DEBUG - fprintf (stderr, - "i370_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n", - h->dynindx, *cp); -#endif - - if (h->dynindx != -1) - h->dynindx += *cp; - - 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; -{ - bfd *dynobj; - asection *s; - boolean plt; - boolean relocs; - boolean reltext; - -#ifdef DEBUG - fprintf (stderr, "i370_elf_size_dynamic_sections called\n"); -#endif - - dynobj = elf_hash_table (info)->dynobj; - BFD_ASSERT (dynobj != NULL); - - if (elf_hash_table (info)->dynamic_sections_created) - { - /* Set the contents of the .interp section to the interpreter. */ - if (! info->shared) - { - s = bfd_get_section_by_name (dynobj, ".interp"); - BFD_ASSERT (s != NULL); - s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; - s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; - } - } - else - { - /* We may have created entries in the .rela.got, .rela.sdata, and - .rela.sdata2 sections. However, if we are not creating the - dynamic sections, we will not actually use these entries. Reset - the size of .rela.got, et al, which will cause it to get - stripped from the output file below. */ - static char *rela_sections[] = { ".rela.got", ".rela.sdata", - ".rela.sdata2", ".rela.sbss", - (char *)0 }; - char **p; - - for (p = rela_sections; *p != (char *)0; p++) - { - s = bfd_get_section_by_name (dynobj, *p); - if (s != NULL) - s->_raw_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; - for (s = dynobj->sections; s != NULL; s = s->next) - { - const char *name; - boolean strip; - - if ((s->flags & SEC_LINKER_CREATED) == 0) - continue; - - /* 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; - } - } - else if (strncmp (name, ".rela", 5) == 0) - { - 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 - { - asection *target; - const char *outname; - - /* Remember whether there are any relocation sections. */ - relocs = true; - - /* If this relocation section applies to a read only - section, then we probably need a DT_TEXTREL entry. */ - outname = bfd_get_section_name (output_bfd, - s->output_section); - target = bfd_get_section_by_name (output_bfd, outname + 5); - if (target != NULL - && (target->flags & SEC_READONLY) != 0 - && (target->flags & SEC_ALLOC) != 0) - reltext = true; - - /* We use the reloc_count field as a counter if we need - to copy relocs into the output file. */ - s->reloc_count = 0; - } - } - else if (strcmp (name, ".got") != 0 - && strcmp (name, ".sdata") != 0 - && strcmp (name, ".sdata2") != 0) - { - /* It's not one of our sections, so don't allocate space. */ - continue; - } - - if (strip) - { - 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; - - 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; - } - - if (elf_hash_table (info)->dynamic_sections_created) - { - /* Add some entries to the .dynamic section. We fill in the - values later, in i370_elf_finish_dynamic_sections, but we - must add the entries now so that we get the correct size for - the .dynamic section. The DT_DEBUG entry is filled in by the - dynamic linker and used by the debugger. */ - if (! info->shared) - { - if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) - return false; - } - - if (plt) - { - if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) - || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) - return false; - } - - if (relocs) - { - if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) - || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, - sizeof (Elf32_External_Rela))) - return false; - } - - if (reltext) - { - if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) - return false; - info->flags |= DF_TEXTREL; - } - } - - /* If we are generating a shared library, we generate a section - symbol for each output section. These are local symbols, which - means that they must come first in the dynamic symbol table. - That means we must increment the dynamic symbol index of every - other dynamic symbol. - - 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. */ - if (info->shared) - { - int c; - - for (c = 0, s = output_bfd->sections; s != NULL; s = s->next) - { - if ((s->flags & SEC_LINKER_CREATED) != 0 - || (s->flags & SEC_ALLOC) == 0) - { - elf_section_data (s)->dynindx = -1; - continue; - } - - /* These symbols will have no names, so we don't need to - fiddle with dynstr_index. */ - - elf_section_data (s)->dynindx = c + 1; - - c++; - } - - elf_link_hash_traverse (elf_hash_table (info), - i370_elf_adjust_dynindx, - (PTR) &c); - elf_hash_table (info)->dynsymcount += c; - } - - 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; -{ - 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; - -#ifdef DEBUG - fprintf (stderr, "i370_elf_check_relocs called for section %s in %s\n", - bfd_get_section_name (abfd, sec), - bfd_get_filename (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; - - rel_end = relocs + sec->reloc_count; - for (rel = relocs; rel < rel_end; rel++) - { - unsigned long r_symndx; - struct elf_link_hash_entry *h; - - r_symndx = ELF32_R_SYM (rel->r_info); - if (r_symndx < symtab_hdr->sh_info) - h = NULL; - else - h = sym_hashes[r_symndx - symtab_hdr->sh_info]; - - if (info->shared) - { -#ifdef DEBUG - fprintf (stderr, - "i370_elf_check_relocs needs to create relocation for %s\n", - (h && h->root.root.string) - ? h->root.root.string : "<unknown>"); -#endif - if (sreloc == NULL) - { - const char *name; - - 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; - } - } - - sreloc->_raw_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 - in case it turns out that the reloc is unnecessary - because the symbol is forced local by versioning or - we are linking with -Bdynamic. Fortunately this - case is not frequent. */ - } - } - - 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; -{ - asection *sdyn; - bfd *dynobj = elf_hash_table (info)->dynobj; - asection *sgot = bfd_get_section_by_name (dynobj, ".got"); - -#ifdef DEBUG - fprintf (stderr, "i370_elf_finish_dynamic_sections called\n"); -#endif - - sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); - - if (elf_hash_table (info)->dynamic_sections_created) - { - asection *splt; - Elf32_External_Dyn *dyncon, *dynconend; - - splt = bfd_get_section_by_name (dynobj, ".plt"); - BFD_ASSERT (splt != NULL && sdyn != NULL); - - dyncon = (Elf32_External_Dyn *) sdyn->contents; - dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); - for (; dyncon < dynconend; dyncon++) - { - Elf_Internal_Dyn dyn; - const char *name; - 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; - } - - if (name != NULL) - { - asection *s; - - s = bfd_get_section_by_name (output_bfd, name); - if (s == NULL) - dyn.d_un.d_val = 0; - else - { - 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; - } - } - 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) - { - unsigned char *contents = sgot->contents; - bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents); - - if (sdyn == NULL) - bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4); - else - bfd_put_32 (output_bfd, - sdyn->output_section->vma + sdyn->output_offset, - contents+4); - - elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; - } - - if (info->shared) - { - asection *sdynsym; - asection *s; - Elf_Internal_Sym sym; - int maxdindx = 0; - - /* Set up the section symbols for the output sections. */ - - sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); - BFD_ASSERT (sdynsym != NULL); - - sym.st_size = 0; - sym.st_name = 0; - sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); - sym.st_other = 0; - - for (s = output_bfd->sections; s != NULL; s = s->next) - { - int indx, dindx; - - sym.st_value = s->vma; - - indx = elf_section_data (s)->this_idx; - dindx = elf_section_data (s)->dynindx; - if (dindx != -1) - { - BFD_ASSERT(indx > 0); - BFD_ASSERT(dindx > 0); - - if (dindx > maxdindx) - maxdindx = dindx; - - sym.st_shndx = indx; - - bfd_elf32_swap_symbol_out (output_bfd, &sym, - (PTR) (((Elf32_External_Sym *) - sdynsym->contents) - + dindx)); - } - } - - /* Set the sh_info field of the output .dynsym section to the - index of the first global symbol. */ - elf_section_data (sdynsym->output_section)->this_hdr.sh_info = - maxdindx + 1; - } - - return true; -} - -/* The RELOCATE_SECTION function is called by the ELF backend linker - to handle the relocations for a section. - - The relocs are always passed as Rela structures; if the section - actually uses Rel structures, the r_addend field will always be - zero. - - 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 - necessary. - - This function does not have to worry about setting the reloc - address or the reloc symbol index. - - LOCAL_SYMS is a pointer to the swapped in local symbols. - - LOCAL_SECTIONS is an array giving the section in the input file - corresponding to the st_shndx field of each local symbol. - - 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 - 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; -{ - 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; - -#ifdef DEBUG - fprintf (stderr, "i370_elf_relocate_section called for %s section %s, %ld relocations%s\n", - bfd_get_filename (input_bfd), - bfd_section_name(input_bfd, input_section), - (long)input_section->reloc_count, - (info->relocateable) ? " (relocatable)" : ""); -#endif - - 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; - reloc_howto_type *howto; - unsigned long r_symndx; - bfd_vma relocation; - - /* 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_get_filename (input_bfd), - (int)r_type); - - bfd_set_error (bfd_error_bad_value); - ret = false; - continue; - } - - howto = i370_elf_howto_table[(int)r_type]; - r_symndx = ELF32_R_SYM (rel->r_info); - - 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 = "<local symbol>"; - - relocation = (sec->output_section->vma - + sec->output_offset - + sym->st_value); - } - 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; - sym_name = h->root.root.string; - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - 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) - && (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; - } - 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 - && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) - relocation = 0; - else - { - (*info->callbacks->undefined_symbol) (info, - h->root.root.string, - input_bfd, - input_section, - rel->r_offset, - true); - ret = false; - continue; - } - } - - switch ((int)r_type) - { - default: - (*_bfd_error_handler) ("%s: unknown relocation type %d for symbol %s", - bfd_get_filename (input_bfd), - (int)r_type, sym_name); - - bfd_set_error (bfd_error_bad_value); - ret = false; - continue; - - /* Relocations that may need to be propagated if this is a shared - 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 */ - - /* Relocations that always need to be propagated if this is a shared - object. */ - case (int)R_I370_NONE: - case (int)R_I370_ADDR31: - case (int)R_I370_ADDR16: - if (info->shared) - { - Elf_Internal_Rela outrel; - boolean skip; - -#ifdef DEBUG - fprintf (stderr, - "i370_elf_relocate_section needs to create relocation for %s\n", - (h && h->root.root.string) ? h->root.root.string : "<unknown>"); -#endif - - /* When generating a shared object, these relocations - 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); - } - - 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; - } - - 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. */ - else if (h != NULL - && ((! info->symbolic && h->dynindx != -1) - || (h->elf_link_hash_flags - & ELF_LINK_HASH_DEF_REGULAR) == 0)) - { - BFD_ASSERT (h->dynindx != -1); - outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); - outrel.r_addend = rel->r_addend; - } - else - { - if (r_type == R_I370_ADDR31) - { - outrel.r_info = ELF32_R_INFO (0, R_I370_RELATIVE); - outrel.r_addend = relocation + rel->r_addend; - } - else - { - 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)) - indx = 0; - else if (sec == NULL || sec->owner == NULL) - { - bfd_set_error (bfd_error_bad_value); - return false; - } - else - { - asection *osec; - - osec = sec->output_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", - indx, osec->name, osec->flags, - h->root.root.string); - } -#endif - } - - outrel.r_info = ELF32_R_INFO (indx, r_type); - outrel.r_addend = relocation + rel->r_addend; - } - } - - bfd_elf32_swap_reloca_out (output_bfd, &outrel, - (((Elf32_External_Rela *) - sreloc->contents) - + sreloc->reloc_count)); - ++sreloc->reloc_count; - - /* 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 - || (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: - (*_bfd_error_handler) ("%s: Relocation %s is not yet supported for symbol %s.", - bfd_get_filename (input_bfd), - i370_elf_howto_table[ (int)r_type ]->name, - sym_name); - - bfd_set_error (bfd_error_invalid_operation); - ret = false; - continue; - } - -#ifdef DEBUG - fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n", - howto->name, - (int)r_type, - sym_name, - r_symndx, - (long)offset, - (long)addend); -#endif - - r = _bfd_final_link_relocate (howto, - input_bfd, - input_section, - contents, - offset, - relocation, - addend); - - if (r != bfd_reloc_ok) - { - ret = false; - switch (r) - { - default: - break; - - case bfd_reloc_overflow: - { - const char *name; - - if (h != NULL) - name = h->root.root.string; - else - { - name = bfd_elf_string_from_elf_section (input_bfd, - symtab_hdr->sh_link, - sym->st_name); - if (name == NULL) - break; - - if (*name == '\0') - name = bfd_section_name (input_bfd, sec); - } - - (*info->callbacks->reloc_overflow) (info, - name, - howto->name, - (bfd_vma) 0, - input_bfd, - input_section, - offset); - } - break; - - } - } - } - -#ifdef DEBUG - fprintf (stderr, "\n"); -#endif - - 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" -#define ELF_ARCH bfd_arch_i370 -#define ELF_MACHINE_CODE EM_S370 -#ifdef EM_I370_OLD -#define ELF_MACHINE_ALT1 EM_I370_OLD -#endif -#define ELF_MAXPAGESIZE 0x1000 -#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 bfd_elf32_bfd_reloc_type_lookup i370_elf_reloc_type_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. - */ -#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_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_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 - -int i370_noop() -{ - 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 - -#include "elf32-target.h" |