194 lines
7.5 KiB
C
194 lines
7.5 KiB
C
/* E2K-specific support for 32-bit ELF
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Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
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2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/e2k.h"
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#include "elfxx-e2k.h"
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static int
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elf32_e2k_write_out_phdrs (bfd *abfd,
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const Elf_Internal_Phdr *phdr,
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unsigned int count)
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{
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/* There is no point in hacking VMA's unless we are creating an executable
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containing DSP-specific segments. Otherwise we may very well set wrong
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VMA's when creating non-trivial ELF files (e.g. Kernels, BIOSes and so
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on) which may have segments with `VMA != LMA'. Later when creating binary
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images OBJCOPY may very well figure out wrong LMAs for the corresponding
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sections since it'll be unable to find appropriate segments containing
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them and set `LMA = VMA' (see `_bfd_elf_make_section_from_shdr ()'). This
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may very well lead to binary images having HUGE sizes (see Bug #67966). */
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if (!e2k_dsp_linux_mode)
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return bfd_elf32_write_out_phdrs (abfd, phdr, count);
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while (count--)
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{
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Elf32_External_Phdr extphdr;
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if (phdr->p_vaddr != phdr->p_paddr)
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{
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Elf_Internal_Phdr fake;
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memcpy (&fake, phdr, sizeof (fake));
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fake.p_vaddr = phdr->p_paddr;
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bfd_elf32_swap_phdr_out (abfd, &fake, &extphdr);
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}
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else
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bfd_elf32_swap_phdr_out (abfd, phdr, &extphdr);
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if (bfd_bwrite (&extphdr, sizeof (Elf32_External_Phdr), abfd)
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!= sizeof (Elf32_External_Phdr))
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return -1;
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phdr++;
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}
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return 0;
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}
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/* All fields are set to their default values from
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`elfcode.h' except `write_out_phdrs' which shoud
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fool the Kernel in case of DSP segments. */
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static const struct elf_size_info elf32_e2k_size_info = {
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sizeof (Elf32_External_Ehdr),
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sizeof (Elf32_External_Phdr),
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sizeof (Elf32_External_Shdr),
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sizeof (Elf32_External_Rel),
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sizeof (Elf32_External_Rela),
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sizeof (Elf32_External_Sym),
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sizeof (Elf32_External_Dyn),
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sizeof (Elf_External_Note),
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4,
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1,
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32, 2,
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1, 1,
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elf32_e2k_write_out_phdrs,
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bfd_elf32_write_shdrs_and_ehdr,
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bfd_elf32_checksum_contents,
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bfd_elf32_write_relocs,
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bfd_elf32_swap_symbol_in,
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bfd_elf32_swap_symbol_out,
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bfd_elf32_slurp_reloc_table,
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bfd_elf32_slurp_symbol_table,
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bfd_elf32_swap_dyn_in,
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bfd_elf32_swap_dyn_out,
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bfd_elf32_swap_reloc_in,
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bfd_elf32_swap_reloc_out,
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bfd_elf32_swap_reloca_in,
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bfd_elf32_swap_reloca_out
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};
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#define bfd_elf32_bfd_link_add_symbols _bfd_e2k_elf_link_add_symbols
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#define bfd_elf32_bfd_reloc_type_lookup _bfd_e2k_elf_reloc_type_lookup
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#define bfd_elf32_bfd_reloc_name_lookup _bfd_e2k_elf_reloc_name_lookup
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#define bfd_elf32_bfd_merge_private_bfd_data _bfd_e2k_elf_merge_private_bfd_data
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#define bfd_elf32_mkobject _bfd_e2k_elf_mkobject
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#define bfd_elf32_bfd_link_hash_table_create _bfd_e2k_elf_link_hash_table_create
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#define bfd_elf32_bfd_final_link _bfd_e2k_elf_final_link
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#define bfd_elf32_get_synthetic_symtab _bfd_e2k_elf_get_synthetic_symtab
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#define bfd_elf32_write_object_contents _bfd_e2k_elf_write_object_contents
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#define bfd_elf32_bfd_copy_private_bfd_data _bfd_e2k_elf_copy_private_bfd_data
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#define elf_info_to_howto _bfd_e2k_elf_info_to_howto
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#define elf_backend_add_symbol_hook _bfd_e2k_elf_add_symbol_hook
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#define elf_backend_special_sections _bfd_e2k_elf_special_sections
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#define elf_backend_common_definition _bfd_e2k_elf_common_definition
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#define elf_backend_merge_symbol_attribute _bfd_e2k_elf_merge_symbol_attribute
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#define elf_backend_grok_prstatus _bfd_e2k_elf_grok_prstatus
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#define elf_backend_write_core_note _bfd_e2k_elf_write_core_note
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#define elf_backend_create_dynamic_sections _bfd_e2k_elf_create_dynamic_sections
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#define elf_backend_copy_indirect_symbol _bfd_e2k_elf_copy_indirect_symbol
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#define elf_backend_check_directives _bfd_e2k_elf_check_directives
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#define elf_backend_check_relocs _bfd_e2k_elf_check_relocs
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#define elf_backend_gc_sweep_hook _bfd_e2k_elf_gc_sweep_hook
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#define elf_backend_adjust_dynamic_symbol _bfd_e2k_elf_adjust_dynamic_symbol
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#define elf_backend_size_dynamic_sections _bfd_e2k_elf_size_dynamic_sections
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#define elf_backend_action_discarded _bfd_e2k_elf_action_discarded
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#define elf_backend_relocate_section _bfd_e2k_elf_relocate_section
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#define elf_backend_finish_dynamic_symbol _bfd_e2k_elf_finish_dynamic_symbol
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#define elf_backend_reloc_type_class _bfd_e2k_elf_reloc_type_class
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#define elf_backend_finish_dynamic_sections _bfd_e2k_elf_finish_dynamic_sections
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#define elf_backend_init_file_header _bfd_e2k_elf_init_file_header
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#define elf_backend_ignore_discarded_relocs _bfd_e2k_elf_ignore_discarded_relocs
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#define elf_backend_hide_symbol _bfd_e2k_elf_hide_symbol
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#define elf_backend_object_p _bfd_e2k_elf_object_p
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#define elf_backend_setup_gnu_properties _bfd_e2k_elf_link_setup_gnu_properties
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/* Make tests employing `gc-sections' option PASS. I wonder if any backend-
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specific support is required. TODO: place here actual names of the tests. */
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#define elf_backend_can_gc_sections 1
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#define elf_backend_want_got_sym 1
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/* I want got.refcount start from `0', not from `-1'
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(see _bfd_elf_link_hash_table_init). */
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#define elf_backend_can_refcount 1
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#define elf_backend_want_got_plt 1
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#define elf_backend_plt_readonly 1
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/* This is required to ensure that addends of rela-relocations against section
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symbols are adjusted correctly during the relocatable linkage in
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`elf_link_input_bfd ()'. */
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#define elf_backend_rela_normal 1
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#define elf_backend_plt_alignment 3
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#define elf_backend_size_info elf32_e2k_size_info
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#define elf_backend_extern_protected_data 1
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#define elf_backend_r_none_info R_E2K_NONE
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/* Let `bfd_elf_size_dynamic_sections ()' treat a missing PT_GNU_STACK as an
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unexecutable one to be in line with the Kernel and glibc. */
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#define elf_backend_default_execstack 0
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#define ELF_ARCH bfd_arch_e2k
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#define ELF_MACHINE_CODE EM_MCST_ELBRUS
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/* This is the value we initially used. */
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#define ELF_MACHINE_ALT1 EM_E2K_OLD
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#define ELF_MAXPAGESIZE 0x1000
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/* The first entry in `.got' is reserved for the `_DYNAMIC' link-time
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address. */
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#define elf_backend_got_header_size 12
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#define TARGET_LITTLE_SYM e2k_elf32_vec
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#ifndef TARGET_LITTLE_NAME
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# define TARGET_LITTLE_NAME "elf32-e2k"
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# include "elf32-target.h"
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#endif
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