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Diffstat (limited to 'bfd/elf32-openrisc.c')
-rw-r--r--bfd/elf32-openrisc.c653
1 files changed, 0 insertions, 653 deletions
diff --git a/bfd/elf32-openrisc.c b/bfd/elf32-openrisc.c
deleted file mode 100644
index 54fd69c6999..00000000000
--- a/bfd/elf32-openrisc.c
+++ /dev/null
@@ -1,653 +0,0 @@
-/* OpenRISC-specific support for 32-bit ELF.
- Copyright (C) 2001 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 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. */
-
-#include "bfd.h"
-#include "sysdep.h"
-#include "libbfd.h"
-#include "elf-bfd.h"
-#include "elf/openrisc.h"
-#include "libiberty.h"
-
-/* Forward declarations. */
-
-static reloc_howto_type *openrisc_reloc_type_lookup
- PARAMS ((bfd * , bfd_reloc_code_real_type));
-static void openrisc_info_to_howto_rela
- PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
-static boolean openrisc_elf_relocate_section
- PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
- Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
-static bfd_reloc_status_type openrisc_final_link_relocate
- PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
- Elf_Internal_Rela *, bfd_vma));
-static boolean openrisc_elf_gc_sweep_hook
- PARAMS ((bfd *, struct bfd_link_info *, asection *,
- const Elf_Internal_Rela *));
-static asection *openrisc_elf_gc_mark_hook
- PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
- struct elf_link_hash_entry *, Elf_Internal_Sym *));
-
-
-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 (abfd, code)
- 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;
-}
-
-/* Set the howto pointer for an OpenRISC ELF reloc. */
-
-static void
-openrisc_info_to_howto_rela (abfd, cache_ptr, dst)
- bfd * abfd ATTRIBUTE_UNUSED;
- arelent * cache_ptr;
- Elf32_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 (howto, input_bfd, input_section, contents, rel,
- relocation)
- 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.
- There is some attempt to make this function usable for many architectures,
- both USE_REL and USE_RELA ['twould be nice if such a critter existed],
- if only to serve as a learning tool.
-
- 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 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
-openrisc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, local_syms, local_sections)
- bfd *output_bfd ATTRIBUTE_UNUSED;
- 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 (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 (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- {
- sec = local_sections[r_symndx];
- rel->r_addend += sec->output_offset + sym->st_value;
- }
- }
- continue;
- }
-
- if ((unsigned int) r_type >
- (sizeof openrisc_elf_howto_table / sizeof (reloc_howto_type)))
- abort ();
-
- /* This is a final link. */
- 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 = (sec->output_section->vma
- + sec->output_offset + sym->st_value);
-
- 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
- {
- 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;
-
- 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;
- 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->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, rel->r_offset, true)))
- return false;
- relocation = 0;
- }
- }
-
- r = openrisc_final_link_relocate (howto, input_bfd, input_section,
- contents, rel, relocation);
-
- if (r != bfd_reloc_ok)
- {
- const char *msg = (const char *) NULL;
-
- switch (r)
- {
- case bfd_reloc_overflow:
- r = info->callbacks->reloc_overflow
- (info, 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 (abfd, info, rel, h, sym)
- bfd *abfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
- Elf_Internal_Rela *rel ATTRIBUTE_UNUSED;
- struct elf_link_hash_entry *h ATTRIBUTE_UNUSED;
- Elf_Internal_Sym *sym ATTRIBUTE_UNUSED;
-{
- if (h != NULL)
- {
- switch (ELF32_R_TYPE (rel->r_info))
- {
- case R_OPENRISC_GNU_VTINHERIT:
- case R_OPENRISC_GNU_VTENTRY:
- break;
-
- default:
- switch (h->root.type)
- {
- case bfd_link_hash_defined:
- case bfd_link_hash_defweak:
- return h->root.u.def.section;
-
- case bfd_link_hash_common:
- return h->root.u.c.p->section;
-
- default:
- break;
- }
- }
- }
- else
- {
- if (!(elf_bad_symtab (abfd)
- && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
- && !((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
- && sym->st_shndx != SHN_COMMON))
- {
- return bfd_section_from_elf_index (abfd, sym->st_shndx);
- }
- }
-
- return NULL;
-}
-
-/* Update the got entry reference counts for the section being removed. */
-
-static boolean
-openrisc_elf_gc_sweep_hook (abfd, info, sec, relocs)
- bfd *abfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
- asection *sec ATTRIBUTE_UNUSED;
- const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
-{
- return true;
-}
-
-/* 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 boolean
-openrisc_elf_check_relocs (abfd, info, sec, 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, **sym_hashes_end;
- const Elf_Internal_Rela *rel;
- const Elf_Internal_Rela *rel_end;
-
- if (info->relocateable)
- return true;
-
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (abfd);
- sym_hashes_end =
- sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
- if (!elf_bad_symtab (abfd))
- sym_hashes_end -= symtab_hdr->sh_info;
-
- 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];
-
- 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_elf32_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:
- if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
- return false;
- break;
- }
- }
-
- return true;
-}
-
-/* Set the right machine number. */
-
-static boolean
-openrisc_elf_object_p (abfd)
- bfd *abfd;
-{
- switch (elf_elfheader (abfd)->e_flags & 0xf)
- {
- default:
- (void) bfd_default_set_arch_mach (abfd, bfd_arch_openrisc, 0);
- break;
- }
- return true;
-}
-
-/* Store the machine number in the flags field. */
-
-static void
-openrisc_elf_final_write_processing (abfd, linker)
- bfd *abfd;
- 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_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_gc_sweep_hook openrisc_elf_gc_sweep_hook
-#define elf_backend_check_relocs openrisc_elf_check_relocs
-
-#define elf_backend_can_gc_sections 1
-
-#define bfd_elf32_bfd_reloc_type_lookup openrisc_reloc_type_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"
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