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author | Christian Svensson <blue@cmd.nu> | 2014-04-22 15:57:47 +0100 |
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committer | Nick Clifton <nickc@redhat.com> | 2014-04-22 15:57:47 +0100 |
commit | 73589c9dbddc7906fa6a150f2a2a0ff6b746e8ba (patch) | |
tree | 92412e946a93c7cee10640c68d2cd79f4e786c9f /bfd/elf32-openrisc.c | |
parent | a75fef0e5bc3bfeb4eac434c1c68831f55ab597d (diff) | |
download | gdb-73589c9dbddc7906fa6a150f2a2a0ff6b746e8ba.zip gdb-73589c9dbddc7906fa6a150f2a2a0ff6b746e8ba.tar.gz gdb-73589c9dbddc7906fa6a150f2a2a0ff6b746e8ba.tar.bz2 |
Remove support for the (deprecated) openrisc and or32 configurations and replace
with support for the new or1k configuration.
Diffstat (limited to 'bfd/elf32-openrisc.c')
-rw-r--r-- | bfd/elf32-openrisc.c | 569 |
1 files changed, 0 insertions, 569 deletions
diff --git a/bfd/elf32-openrisc.c b/bfd/elf32-openrisc.c deleted file mode 100644 index 0e53759..0000000 --- a/bfd/elf32-openrisc.c +++ /dev/null @@ -1,569 +0,0 @@ -/* OpenRISC-specific support for 32-bit ELF. - Copyright (C) 2001-2014 Free Software Foundation, Inc. - Contributed by Johan Rydberg, jrydberg@opencores.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 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. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, - MA 02110-1301, USA. */ - -#include "sysdep.h" -#include "bfd.h" -#include "libbfd.h" -#include "elf-bfd.h" -#include "elf/openrisc.h" -#include "libiberty.h" - -static reloc_howto_type openrisc_elf_howto_table[] = -{ - /* This reloc does nothing. */ - HOWTO (R_OPENRISC_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_OPENRISC_NONE", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A PC relative 26 bit relocation, right shifted by 2. */ - HOWTO (R_OPENRISC_INSN_REL_26, /* type */ - 2, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 26, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_OPENRISC_INSN_REL_26", /* name */ - FALSE, /* partial_inplace */ - 0x00000000, /* src_mask */ - 0x03ffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A absolute 26 bit relocation, right shifted by 2. */ - HOWTO (R_OPENRISC_INSN_ABS_26, /* type */ - 2, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 26, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_signed, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_OPENRISC_INSN_ABS_26", /* name */ - FALSE, /* partial_inplace */ - 0x00000000, /* src_mask */ - 0x03ffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_OPENRISC_LO_16_IN_INSN, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_OPENRISC_LO_16_IN_INSN", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0x0000ffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_OPENRISC_HI_16_IN_INSN, /* type */ - 16, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* special_function */ - "R_OPENRISC_HI_16_IN_INSN", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0x0000ffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* An 8 bit absolute relocation. */ - HOWTO (R_OPENRISC_8, /* 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_OPENRISC_8", /* name */ - TRUE, /* partial_inplace */ - 0x0000, /* src_mask */ - 0x00ff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A 16 bit absolute relocation. */ - HOWTO (R_OPENRISC_16, /* 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_OPENRISC_16", /* name */ - TRUE, /* partial_inplace */ - 0x00000000, /* src_mask */ - 0x0000ffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* A 32 bit absolute relocation. */ - HOWTO (R_OPENRISC_32, /* 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_OPENRISC_32", /* name */ - TRUE, /* partial_inplace */ - 0x00000000, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* GNU extension to record C++ vtable hierarchy. */ - HOWTO (R_OPENRISC_GNU_VTINHERIT, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - NULL, /* special_function */ - "R_OPENRISC_GNU_VTINHERIT", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* GNU extension to record C++ vtable member usage. */ - HOWTO (R_OPENRISC_GNU_VTENTRY, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - _bfd_elf_rel_vtable_reloc_fn, /* special_function */ - "R_OPENRISC_GNU_VTENTRY", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ -}; - -/* Map BFD reloc types to OpenRISC ELF reloc types. */ - -struct openrisc_reloc_map -{ - bfd_reloc_code_real_type bfd_reloc_val; - unsigned int openrisc_reloc_val; -}; - -static const struct openrisc_reloc_map openrisc_reloc_map[] = -{ - { BFD_RELOC_NONE, R_OPENRISC_NONE }, - { BFD_RELOC_32, R_OPENRISC_32 }, - { BFD_RELOC_16, R_OPENRISC_16 }, - { BFD_RELOC_8, R_OPENRISC_8 }, - { BFD_RELOC_OPENRISC_REL_26, R_OPENRISC_INSN_REL_26 }, - { BFD_RELOC_OPENRISC_ABS_26, R_OPENRISC_INSN_ABS_26 }, - { BFD_RELOC_HI16, R_OPENRISC_HI_16_IN_INSN }, - { BFD_RELOC_LO16, R_OPENRISC_LO_16_IN_INSN }, - { BFD_RELOC_VTABLE_INHERIT, R_OPENRISC_GNU_VTINHERIT }, - { BFD_RELOC_VTABLE_ENTRY, R_OPENRISC_GNU_VTENTRY } -}; - -static reloc_howto_type * -openrisc_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, - bfd_reloc_code_real_type code) -{ - unsigned int i; - - for (i = ARRAY_SIZE (openrisc_reloc_map); --i;) - if (openrisc_reloc_map[i].bfd_reloc_val == code) - return & openrisc_elf_howto_table[openrisc_reloc_map[i]. - openrisc_reloc_val]; - - return NULL; -} - -static reloc_howto_type * -openrisc_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, - const char *r_name) -{ - unsigned int i; - - for (i = 0; - i < (sizeof (openrisc_elf_howto_table) - / sizeof (openrisc_elf_howto_table[0])); - i++) - if (openrisc_elf_howto_table[i].name != NULL - && strcasecmp (openrisc_elf_howto_table[i].name, r_name) == 0) - return &openrisc_elf_howto_table[i]; - - return NULL; -} - -/* Set the howto pointer for an OpenRISC ELF reloc. */ - -static void -openrisc_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED, - arelent * cache_ptr, - Elf_Internal_Rela * dst) -{ - unsigned int r_type; - - r_type = ELF32_R_TYPE (dst->r_info); - BFD_ASSERT (r_type < (unsigned int) R_OPENRISC_max); - cache_ptr->howto = & openrisc_elf_howto_table[r_type]; -} - -/* Perform a single relocation. By default we use the standard BFD - routines, but a few relocs, we have to do them ourselves. */ - -static bfd_reloc_status_type -openrisc_final_link_relocate (reloc_howto_type *howto, - bfd *input_bfd, - asection *input_section, - bfd_byte *contents, - Elf_Internal_Rela *rel, - bfd_vma relocation) -{ - bfd_reloc_status_type r = bfd_reloc_ok; - - switch (howto->type) - { - case R_OPENRISC_LO_16_IN_INSN: - relocation &= 0xffff; - r = _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, - relocation, rel->r_addend); - break; - - default: - r = _bfd_final_link_relocate (howto, input_bfd, input_section, - contents, rel->r_offset, - relocation, rel->r_addend); - } - - return r; -} - -/* Relocate an OpenRISC ELF section. - - The RELOCATE_SECTION function is called by the new 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 adjusting the section contents as - necessary, and (if using Rela relocs and generating a relocatable - 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 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 bfd_boolean -openrisc_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; - struct elf_link_hash_entry **sym_hashes; - Elf_Internal_Rela *rel; - Elf_Internal_Rela *relend; - - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (input_bfd); - relend = relocs + input_section->reloc_count; - - for (rel = relocs; rel < relend; rel++) - { - reloc_howto_type *howto; - unsigned long r_symndx; - Elf_Internal_Sym *sym; - asection *sec; - struct elf_link_hash_entry *h; - bfd_vma relocation; - bfd_reloc_status_type r; - const char *name = NULL; - int r_type; - - r_type = ELF32_R_TYPE (rel->r_info); - r_symndx = ELF32_R_SYM (rel->r_info); - - if (r_type == R_OPENRISC_GNU_VTINHERIT - || r_type == R_OPENRISC_GNU_VTENTRY) - continue; - - if ((unsigned int) r_type > - (sizeof openrisc_elf_howto_table / sizeof (reloc_howto_type))) - abort (); - - howto = openrisc_elf_howto_table + ELF32_R_TYPE (rel->r_info); - h = NULL; - sym = NULL; - sec = NULL; - - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - sec = local_sections[r_symndx]; - relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); - - name = bfd_elf_string_from_elf_section - (input_bfd, symtab_hdr->sh_link, sym->st_name); - name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; - } - else - { - bfd_boolean unresolved_reloc, warned, ignored; - - RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, - r_symndx, symtab_hdr, sym_hashes, - h, sec, relocation, - unresolved_reloc, warned, ignored); - } - - if (sec != NULL && discarded_section (sec)) - RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, - rel, 1, relend, howto, 0, contents); - - if (info->relocatable) - continue; - - r = openrisc_final_link_relocate (howto, input_bfd, input_section, - contents, rel, relocation); - - if (r != bfd_reloc_ok) - { - const char *msg = NULL; - - switch (r) - { - case bfd_reloc_overflow: - r = info->callbacks->reloc_overflow - (info, (h ? &h->root : NULL), name, howto->name, - (bfd_vma) 0, input_bfd, input_section, rel->r_offset); - break; - - case bfd_reloc_undefined: - r = info->callbacks->undefined_symbol - (info, name, input_bfd, input_section, rel->r_offset, TRUE); - break; - - case bfd_reloc_outofrange: - msg = _("internal error: out of range error"); - break; - - case bfd_reloc_notsupported: - msg = _("internal error: unsupported relocation error"); - break; - - case bfd_reloc_dangerous: - msg = _("internal error: dangerous relocation"); - break; - - default: - msg = _("internal error: unknown error"); - break; - } - - if (msg) - r = info->callbacks->warning - (info, msg, name, input_bfd, input_section, rel->r_offset); - - if (!r) - return FALSE; - } - } - - return TRUE; -} - -/* Return the section that should be marked against GC for a given - relocation. */ - -static asection * -openrisc_elf_gc_mark_hook (asection *sec, - struct bfd_link_info *info, - Elf_Internal_Rela *rel, - struct elf_link_hash_entry *h, - Elf_Internal_Sym *sym) -{ - if (h != NULL) - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_OPENRISC_GNU_VTINHERIT: - case R_OPENRISC_GNU_VTENTRY: - return NULL; - } - - return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); -} - -/* Look through the relocs for a section during the first phase. - Since we don't do .gots or .plts, we just need to consider the - virtual table relocs for gc. */ - -static bfd_boolean -openrisc_elf_check_relocs (bfd *abfd, - struct bfd_link_info *info, - asection *sec, - const Elf_Internal_Rela *relocs) -{ - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - const Elf_Internal_Rela *rel; - const Elf_Internal_Rela *rel_end; - - if (info->relocatable) - return TRUE; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (abfd); - - rel_end = relocs + sec->reloc_count; - for (rel = relocs; rel < rel_end; rel++) - { - struct elf_link_hash_entry *h; - unsigned long r_symndx; - - 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]; - 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; - - /* PR15323, ref flags aren't set for references in the same - object. */ - h->root.non_ir_ref = 1; - } - - switch (ELF32_R_TYPE (rel->r_info)) - { - /* This relocation describes the C++ object vtable hierarchy. - Reconstruct it for later use during GC. */ - case R_OPENRISC_GNU_VTINHERIT: - if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) - return FALSE; - break; - - /* This relocation describes which C++ vtable entries are actually - used. Record for later use during GC. */ - case R_OPENRISC_GNU_VTENTRY: - BFD_ASSERT (h != NULL); - if (h != NULL - && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) - return FALSE; - break; - } - } - - return TRUE; -} - -/* Set the right machine number. */ - -static bfd_boolean -openrisc_elf_object_p (bfd *abfd) -{ - bfd_default_set_arch_mach (abfd, bfd_arch_openrisc, 0); - return TRUE; -} - -/* Store the machine number in the flags field. */ - -static void -openrisc_elf_final_write_processing (bfd *abfd, - bfd_boolean linker ATTRIBUTE_UNUSED) -{ - unsigned long val; - - switch (bfd_get_mach (abfd)) - { - default: - val = 0; - break; - } - - elf_elfheader (abfd)->e_flags &= ~0xf; - elf_elfheader (abfd)->e_flags |= val; -} - - -#define ELF_ARCH bfd_arch_openrisc -#define ELF_MACHINE_CODE EM_OPENRISC -#define ELF_MACHINE_ALT1 EM_OPENRISC_OLD -#define ELF_MAXPAGESIZE 0x1000 - -#define TARGET_BIG_SYM bfd_elf32_openrisc_vec -#define TARGET_BIG_NAME "elf32-openrisc" - -#define elf_info_to_howto_rel NULL -#define elf_info_to_howto openrisc_info_to_howto_rela -#define elf_backend_relocate_section openrisc_elf_relocate_section -#define elf_backend_gc_mark_hook openrisc_elf_gc_mark_hook -#define elf_backend_check_relocs openrisc_elf_check_relocs - -#define elf_backend_can_gc_sections 1 -#define elf_backend_rela_normal 1 - -#define bfd_elf32_bfd_reloc_type_lookup openrisc_reloc_type_lookup -#define bfd_elf32_bfd_reloc_name_lookup openrisc_reloc_name_lookup - -#define elf_backend_object_p openrisc_elf_object_p -#define elf_backend_final_write_processing openrisc_elf_final_write_processing - -#include "elf32-target.h" |