--- /dev/null
+/* Motorola 68k series support for 32-bit ELF
+ Copyright 1993 Free Software Foundation, Inc.
+
+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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "bfdlink.h"
+#include "libbfd.h"
+#include "libelf.h"
+
+static reloc_howto_type *reloc_type_lookup
+ PARAMS ((bfd *, bfd_reloc_code_real_type));
+static void rtype_to_howto
+ PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
+static void rtype_to_howto_rel
+ PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
+static boolean elf_m68k_create_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+static boolean elf_m68k_create_got_section
+ PARAMS ((bfd *, struct bfd_link_info *));
+static boolean elf_m68k_check_relocs
+ PARAMS ((bfd *, struct bfd_link_info *, asection *,
+ const Elf_Internal_Rela *));
+static boolean elf_m68k_adjust_dynamic_symbol
+ PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
+static boolean elf_m68k_adjust_dynindx
+ PARAMS ((struct elf_link_hash_entry *, PTR));
+static boolean elf_m68k_size_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+static boolean elf_m68k_relocate_section
+ PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
+ Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
+static boolean elf_m68k_finish_dynamic_symbol
+ PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
+ Elf_Internal_Sym *));
+static boolean elf_m68k_finish_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+
+/* elf32 m68k code, generated by elf.el */
+enum reloc_type {
+ R_68K_NONE = 0,
+ R_68K_32 = 1,
+ R_68K_16 = 2,
+ R_68K_8 = 3,
+ R_68K_PC32 = 4,
+ R_68K_PC16 = 5,
+ R_68K_PC8 = 6,
+ R_68K_GOT32 = 7,
+ R_68K_GOT16 = 8,
+ R_68K_GOT8 = 9,
+ R_68K_GOT32O = 10,
+ R_68K_GOT16O = 11,
+ R_68K_GOT8O = 12,
+ R_68K_PLT32 = 13,
+ R_68K_PLT16 = 14,
+ R_68K_PLT8 = 15,
+ R_68K_PLT32O = 16,
+ R_68K_PLT16O = 17,
+ R_68K_PLT8O = 18,
+ R_68K_COPY = 19,
+ R_68K_GLOB_DAT = 20,
+ R_68K_JMP_SLOT = 21,
+ R_68K_RELATIVE = 22,
+ R_68K__max
+};
+
+static reloc_howto_type howto_table[] = {
+ HOWTO(R_68K_NONE, 0, 0, 0, false,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_NONE", false, 0x00000000, 0x00000000,false),
+ HOWTO(R_68K_32, 0, 2,32, false,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_32", false, 0xffffffff, 0xffffffff,false),
+ HOWTO(R_68K_16, 0, 1,16, false,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_16", false, 0x0000ffff, 0x0000ffff,false),
+ HOWTO(R_68K_8, 0, 0, 8, false,0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_68K_8", false, 0x000000ff, 0x000000ff,false),
+ HOWTO(R_68K_PC32, 0, 2,32, true, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC32", false, 0xffffffff, 0xffffffff,true),
+ HOWTO(R_68K_PC16, 0, 1,16, true, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC16", false, 0x0000ffff, 0x0000ffff,true),
+ HOWTO(R_68K_PC8, 0, 0, 8, true, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PC8", false, 0x000000ff, 0x000000ff,true),
+ HOWTO(R_68K_GOT32, 0, 2,32, true, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT32", false, 0xffffffff, 0xffffffff,true),
+ HOWTO(R_68K_GOT16, 0, 1,16, true, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16", false, 0x0000ffff, 0x0000ffff,true),
+ HOWTO(R_68K_GOT8, 0, 0, 8, true, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8", false, 0x000000ff, 0x000000ff,true),
+ HOWTO(R_68K_GOT32O, 0, 2,32, false,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT32O", false, 0xffffffff, 0xffffffff,false),
+ HOWTO(R_68K_GOT16O, 0, 1,16, false,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT16O", false, 0x0000ffff, 0x0000ffff,false),
+ HOWTO(R_68K_GOT8O, 0, 0, 8, false,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_GOT8O", false, 0x000000ff, 0x000000ff,false),
+ HOWTO(R_68K_PLT32, 0, 2,32, true, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT32", false, 0xffffffff, 0xffffffff,true),
+ HOWTO(R_68K_PLT16, 0, 1,16, true, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16", false, 0x0000ffff, 0x0000ffff,true),
+ HOWTO(R_68K_PLT8, 0, 0, 8, true, 0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8", false, 0x000000ff, 0x000000ff,true),
+ HOWTO(R_68K_PLT32O, 0, 2,32, false,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT32O", false, 0xffffffff, 0xffffffff,false),
+ HOWTO(R_68K_PLT16O, 0, 1,16, false,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT16O", false, 0x0000ffff, 0x0000ffff,false),
+ HOWTO(R_68K_PLT8O, 0, 0, 8, false,0, complain_overflow_signed, bfd_elf_generic_reloc, "R_68K_PLT8O", false, 0x000000ff, 0x000000ff,false),
+ HOWTO(R_68K_COPY, 0, 0, 0, false,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_COPY", false, 0xffffffff, 0xffffffff,false),
+ HOWTO(R_68K_GLOB_DAT, 0, 2,32, false,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_GLOB_DAT", false, 0xffffffff, 0xffffffff,false),
+ HOWTO(R_68K_JMP_SLOT, 0, 2,32, false,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_JMP_SLOT", false, 0xffffffff, 0xffffffff,false),
+ HOWTO(R_68K_RELATIVE, 0, 2,32, false,0, complain_overflow_dont, bfd_elf_generic_reloc, "R_68K_RELATIVE", false, 0xffffffff, 0xffffffff,false),
+};
+
+static void
+rtype_to_howto (abfd, cache_ptr, dst)
+ bfd *abfd;
+ arelent *cache_ptr;
+ Elf_Internal_Rela *dst;
+{
+ BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_68K__max);
+ cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)];
+}
+
+static void
+rtype_to_howto_rel (abfd, cache_ptr, dst)
+ bfd *abfd;
+ arelent *cache_ptr;
+ Elf_Internal_Rel *dst;
+{
+ BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_68K__max);
+ cache_ptr->howto = &howto_table[ELF32_R_TYPE(dst->r_info)];
+}
+
+#define elf_info_to_howto rtype_to_howto
+#define elf_info_to_howto_rel rtype_to_howto_rel
+
+static const struct { unsigned char bfd_val, elf_val; } reloc_map[] = {
+ { BFD_RELOC_NONE, R_68K_NONE },
+ { BFD_RELOC_32, R_68K_32 },
+ { BFD_RELOC_16, R_68K_16 },
+ { BFD_RELOC_8, R_68K_8 },
+ { BFD_RELOC_32_PCREL, R_68K_PC32 },
+ { BFD_RELOC_16_PCREL, R_68K_PC16 },
+ { BFD_RELOC_8_PCREL, R_68K_PC8 },
+ { BFD_RELOC_32_GOT_PCREL, R_68K_GOT32 },
+ { BFD_RELOC_16_GOT_PCREL, R_68K_GOT16 },
+ { BFD_RELOC_8_GOT_PCREL, R_68K_GOT8 },
+ { BFD_RELOC_32_GOTOFF, R_68K_GOT32O },
+ { BFD_RELOC_16_GOTOFF, R_68K_GOT16O },
+ { BFD_RELOC_8_GOTOFF, R_68K_GOT8O },
+ { BFD_RELOC_32_PLT_PCREL, R_68K_PLT32 },
+ { BFD_RELOC_16_PLT_PCREL, R_68K_PLT16 },
+ { BFD_RELOC_8_PLT_PCREL, R_68K_PLT8 },
+ { BFD_RELOC_32_PLTOFF, R_68K_PLT32O },
+ { BFD_RELOC_16_PLTOFF, R_68K_PLT16O },
+ { BFD_RELOC_8_PLTOFF, R_68K_PLT8O },
+ { BFD_RELOC_NONE, R_68K_COPY },
+ { BFD_RELOC_68K_GLOB_DAT, R_68K_GLOB_DAT },
+ { BFD_RELOC_68K_JMP_SLOT, R_68K_JMP_SLOT },
+ { BFD_RELOC_68K_RELATIVE, R_68K_RELATIVE },
+ { BFD_RELOC_CTOR, R_68K_32 },
+};
+
+static reloc_howto_type *
+reloc_type_lookup (abfd, code)
+ bfd *abfd;
+ bfd_reloc_code_real_type code;
+{
+ int i;
+ for (i = 0; i < sizeof (reloc_map) / sizeof (reloc_map[0]); i++)
+ {
+ if (reloc_map[i].bfd_val == code)
+ return &howto_table[(int) reloc_map[i].elf_val];
+ }
+ return 0;
+}
+
+#define bfd_elf32_bfd_reloc_type_lookup reloc_type_lookup
+#define ELF_ARCH bfd_arch_m68k
+/* end code generated by elf.el */
+
+#define USE_RELA
+
+\f
+/* Functions for the m68k ELF linker. */
+
+/* The name of the dynamic interpreter. This is put in the .interp
+ section. */
+
+#define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
+
+/* The size in bytes of an entry in the procedure linkage table. */
+
+#define PLT_ENTRY_SIZE 20
+
+/* The first entry in a procedure linkage table looks like this. See
+ the SVR4 ABI m68k supplement to see how this works. */
+
+static const bfd_byte elf_m68k_plt0_entry[PLT_ENTRY_SIZE] =
+{
+ 0x2f, 0x3b, 0x01, 0x70, /* move.l (%pc,addr),-(%sp) */
+ 0, 0, 0, 0, /* replaced with address of .got + 4. */
+ 0x4e, 0xfb, 0x01, 0x71, /* jmp ([%pc,addr]) */
+ 0, 0, 0, 0, /* replaced with address of .got + 8. */
+ 0, 0, 0, 0 /* pad out to 20 bytes. */
+};
+
+/* Subsequent entries in a procedure linkage table look like this. */
+
+static const bfd_byte elf_m68k_plt_entry[PLT_ENTRY_SIZE] =
+{
+ 0x4e, 0xfb, 0x01, 0x71, /* jmp ([addr]) */
+ 0, 0, 0, 0, /* replaced with address of this symbol in .got. */
+ 0x2f, 0x3c, /* move.l #offset,-(%sp) */
+ 0, 0, 0, 0, /* replaced with offset into relocation table. */
+ 0x60, 0xff, /* bra.l .plt */
+ 0, 0, 0, 0 /* replaced with offset to start of .plt. */
+};
+
+/* Create dynamic sections when linking against a dynamic object. */
+
+static boolean
+elf_m68k_create_dynamic_sections (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ flagword flags;
+ register asection *s;
+
+ /* We need to create .plt, .rela.plt, .got, .got.plt, .dynbss, and
+ .rela.bss sections. */
+
+ flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+
+ s = bfd_make_section (abfd, ".plt");
+ if (s == NULL
+ || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY | SEC_CODE)
+ || !bfd_set_section_alignment (abfd, s, 2))
+ return false;
+
+ s = bfd_make_section (abfd, ".rela.plt");
+ if (s == NULL
+ || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
+ || !bfd_set_section_alignment (abfd, s, 2))
+ return false;
+
+ if (!elf_m68k_create_got_section (abfd, info))
+ return false;
+
+ /* The .dynbss section is a place to put symbols which are defined
+ by dynamic objects, are referenced by regular objects, and are
+ not functions. We must allocate space for them in the process
+ image and use a R_68K_COPY reloc to tell the dynamic linker to
+ initialize them at run time. The linker script puts the .dynbss
+ section into the .bss section of the final image. */
+ s = bfd_make_section (abfd, ".dynbss");
+ if (s == NULL
+ || !bfd_set_section_flags (abfd, s, SEC_ALLOC))
+ return false;
+
+ /* The .rela.bss section holds copy relocs. This section is not
+ normally needed. We need to create it here, though, so that the
+ linker will map it to an output section. We can't just create it
+ only if we need it, because we will not know whether we need it
+ until we have seen all the input files, and the first time the
+ main linker code calls BFD after examining all the input files
+ (size_dynamic_sections) the input sections have already been
+ mapped to the output sections. If the section turns out not to
+ be needed, we can discard it later. We will never need this
+ section when generating a shared object, since they do not use
+ copy relocs. */
+ if (!info->shared)
+ {
+ s = bfd_make_section (abfd, ".rela.bss");
+ if (s == NULL
+ || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
+ || !bfd_set_section_alignment (abfd, s, 2))
+ return false;
+ }
+
+ return true;
+}
+
+/* Create the .got section to hold the global offset table, and the
+ .got.plt section to hold procedure linkage table GOT entries. The
+ linker script will put .got.plt into the output .got section. */
+
+static boolean
+elf_m68k_create_got_section (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ flagword flags;
+ register asection *s;
+ struct elf_link_hash_entry *h;
+
+ /* This function may be called more than once. */
+ if (bfd_get_section_by_name (abfd, ".got") != NULL)
+ return true;
+
+ flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
+
+ s = bfd_make_section (abfd, ".got");
+ if (s == NULL
+ || !bfd_set_section_flags (abfd, s, flags)
+ || !bfd_set_section_alignment (abfd, s, 2))
+ return false;
+
+ s = bfd_make_section (abfd, ".got.plt");
+ if (s == NULL
+ || !bfd_set_section_flags (abfd, s, flags)
+ || !bfd_set_section_alignment (abfd, s, 2))
+ return false;
+
+ /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the
+ .got.plt section, which will be placed at the start of the output
+ .got section. We don't do this in the linker script because we
+ don't want to define the symbol if we are not creating a global
+ offset table. */
+ h = NULL;
+ if (!(_bfd_generic_link_add_one_symbol
+ (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, (bfd_vma) 0,
+ (const char *) NULL, false, get_elf_backend_data (abfd)->collect,
+ (struct bfd_link_hash_entry **) &h)))
+ return false;
+ h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
+ h->type = STT_OBJECT;
+
+ if (info->shared
+ && !bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+
+ /* The first three global offset table entries are reserved. */
+ s->_raw_size += 3 * 4;
+
+ 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. */
+
+static boolean
+elf_m68k_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;
+ bfd_vma *local_got_offsets;
+ const Elf_Internal_Rela *rel;
+ const Elf_Internal_Rela *rel_end;
+ asection *sgot;
+ asection *srelgot;
+ asection *sreloc;
+
+ if (info->relocateable)
+ return true;
+
+ 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);
+
+ sgot = NULL;
+ srelgot = NULL;
+ sreloc = NULL;
+
+ rel_end = relocs + sec->reloc_count;
+ for (rel = relocs; rel < rel_end; rel++)
+ {
+ 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];
+
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_68K_GOT8:
+ case R_68K_GOT16:
+ case R_68K_GOT32:
+ case R_68K_GOT8O:
+ case R_68K_GOT16O:
+ case R_68K_GOT32O:
+ /* This symbol requires a global offset table entry. */
+
+ if (h != NULL
+ && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
+ break;
+
+ if (dynobj == NULL)
+ {
+ /* Create the .got section. */
+ elf_hash_table (info)->dynobj = dynobj = abfd;
+ if (!elf_m68k_create_got_section (dynobj, info))
+ return false;
+ }
+
+ if (sgot == NULL)
+ {
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+ BFD_ASSERT (sgot != NULL);
+ }
+
+ if (srelgot == NULL
+ && (h != NULL || info->shared))
+ {
+ srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
+ if (srelgot == NULL)
+ {
+ srelgot = bfd_make_section (dynobj, ".rela.got");
+ if (srelgot == NULL
+ || !bfd_set_section_flags (dynobj, srelgot,
+ (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_READONLY))
+ || !bfd_set_section_alignment (dynobj, srelgot, 2))
+ return false;
+ }
+ }
+
+ if (h != NULL)
+ {
+ if (h->got_offset != (bfd_vma) -1)
+ {
+ /* We have already allocated space in the .got. */
+ break;
+ }
+ h->got_offset = sgot->_raw_size;
+
+ /* Make sure this symbol is output as a dynamic symbol. */
+ if (h->dynindx == -1)
+ {
+ if (!bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+ }
+
+ srelgot->_raw_size += sizeof (Elf32_External_Rela);
+ }
+ else
+ {
+ /* This is a global offset table entry for a local
+ symbol. */
+ if (local_got_offsets == NULL)
+ {
+ size_t size;
+ register int i;
+
+ size = symtab_hdr->sh_info * sizeof (bfd_vma);
+ local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
+ if (local_got_offsets == NULL)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ elf_local_got_offsets (abfd) = local_got_offsets;
+ for (i = 0; i < symtab_hdr->sh_info; i++)
+ local_got_offsets[i] = (bfd_vma) -1;
+ }
+ if (local_got_offsets[r_symndx] != (bfd_vma) -1)
+ {
+ /* We have already allocated space in the .got. */
+ break;
+ }
+ local_got_offsets[r_symndx] = sgot->_raw_size;
+
+ if (info->shared)
+ {
+ /* If we are generating a shared object, we need to
+ output a R_68K_RELATIVE reloc so that the dynamic
+ linker can adjust this GOT entry. */
+ srelgot->_raw_size += sizeof (Elf32_External_Rela);
+ }
+ }
+
+ sgot->_raw_size += 4;
+ break;
+
+ case R_68K_PLT8:
+ case R_68K_PLT16:
+ case R_68K_PLT32:
+ case R_68K_PLT8O:
+ case R_68K_PLT16O:
+ case R_68K_PLT32O:
+ /* This symbol requires a procedure linkage table entry. We
+ actually build the entry in adjust_dynamic_symbol,
+ because this might be a case of linking PIC code without
+ linking in any dynamic objects, in which case we don't
+ need to generate a procedure linkage table after all. */
+
+ /* If this is a local symbol, we resolve it directly without
+ creating a procedure linkage table entry. */
+ if (h == NULL)
+ continue;
+
+ /* Make sure this symbol is output as a dynamic symbol. */
+ if (h->dynindx == -1)
+ {
+ if (!bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+ }
+
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ break;
+
+ case R_68K_8:
+ case R_68K_16:
+ case R_68K_32:
+ case R_68K_PC8:
+ case R_68K_PC16:
+ case R_68K_PC32:
+ if (info->shared
+ && (sec->flags & SEC_ALLOC) != 0)
+ {
+ /* When creating a shared object, we must copy these
+ reloc types into the output file. We create a reloc
+ section in dynobj and make room for this reloc. */
+ if (sreloc == NULL)
+ {
+ const char *name;
+
+ name = (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)
+ {
+ sreloc = bfd_make_section (dynobj, name);
+ if (sreloc == NULL
+ || !bfd_set_section_flags (dynobj, sreloc,
+ (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_READONLY))
+ || !bfd_set_section_alignment (dynobj, sreloc, 2))
+ return false;
+ }
+ }
+
+ sreloc->_raw_size += sizeof (Elf32_External_Rela);
+ }
+
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ 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. */
+
+static boolean
+elf_m68k_adjust_dynamic_symbol (info, h)
+ struct bfd_link_info *info;
+ struct elf_link_hash_entry *h;
+{
+ bfd *dynobj;
+ asection *s;
+ unsigned int power_of_two;
+
+ dynobj = elf_hash_table (info)->dynobj;
+
+ /* Make sure we know what is going on here. */
+ BFD_ASSERT (dynobj != NULL);
+ BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
+ || ((h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_DYNAMIC) != 0
+ && (h->elf_link_hash_flags
+ & ELF_LINK_HASH_REF_REGULAR) != 0
+ && (h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && (h->root.u.def.section->owner == NULL
+ || ((elf_elfheader (h->root.u.def.section->owner)->e_type
+ == ET_DYN)
+ && (bfd_get_flavour (h->root.u.def.section->owner)
+ == bfd_target_elf_flavour)
+ && h->root.u.def.section->output_section == NULL))));
+
+ /* If this is a function, put it in the procedure linkage table. We
+ will fill in the contents of the procedure linkage table later,
+ when we know the address of the .got section. */
+ if (h->type == STT_FUNC
+ || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
+ {
+ if (!elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* This case can occur if we saw a PLT32 reloc in an input
+ file, but none of the input files were dynamic objects.
+ In such a case, we don't actually need to build a
+ procedure linkage table, and we can just do a PC32 reloc
+ instead. */
+ BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
+ return true;
+ }
+
+ s = bfd_get_section_by_name (dynobj, ".plt");
+ BFD_ASSERT (s != NULL);
+
+ /* If this is the first .plt entry, make room for the special
+ first entry. */
+ if (s->_raw_size == 0)
+ s->_raw_size += PLT_ENTRY_SIZE;
+
+ /* If this symbol is not defined in a regular file, and we are
+ not generating a shared library, then set the symbol to this
+ location in the .plt. This is required to make function
+ pointers compare as equal between the normal executable and
+ the shared library. */
+ if (!info->shared
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ {
+ h->root.u.def.section = s;
+ h->root.u.def.value = s->_raw_size;
+ }
+
+ h->plt_offset = s->_raw_size;
+
+ /* Make room for this entry. */
+ s->_raw_size += PLT_ENTRY_SIZE;
+
+ /* We also need to make an entry in the .got.plt section, which
+ will be placed in the .got section by the linker script. */
+
+ s = bfd_get_section_by_name (dynobj, ".got.plt");
+ BFD_ASSERT (s != NULL);
+ s->_raw_size += 4;
+
+ /* We also need to make an entry in the .rela.plt section. */
+
+ s = bfd_get_section_by_name (dynobj, ".rela.plt");
+ BFD_ASSERT (s != NULL);
+ s->_raw_size += sizeof (Elf32_External_Rela);
+
+ return true;
+ }
+
+ /* 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. */
+
+ s = bfd_get_section_by_name (dynobj, ".dynbss");
+ BFD_ASSERT (s != NULL);
+
+ /* If the symbol is currently defined in the .bss section of the
+ dynamic object, then it is OK to simply initialize it to zero.
+ If the symbol is in some other section, we must generate a
+ R_68K_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_LOAD) != 0)
+ {
+ asection *srel;
+
+ 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 > 3)
+ power_of_two = 3;
+
+ /* 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;
+}
+
+/* Set the sizes of the dynamic sections. */
+
+static boolean
+elf_m68k_size_dynamic_sections (output_bfd, info)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+{
+ bfd *dynobj;
+ asection *s;
+ boolean plt;
+ boolean relocs;
+ boolean reltext;
+
+ 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 section.
+ However, if we are not creating the dynamic sections, we will
+ not actually use these entries. Reset the size of .rela.got,
+ which will cause it to get stripped from the output file
+ below. */
+ s = bfd_get_section_by_name (dynobj, ".rela.got");
+ 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_IN_MEMORY) == 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;
+
+ /* Remember whether there are any reloc sections other
+ than .rela.plt. */
+ if (strcmp (name, ".rela.plt") != 0)
+ {
+ relocs = true;
+
+ /* If this relocation section applies to a read only
+ section, then we probably need a DT_TEXTREL
+ entry. .rela.plt is actually associated with
+ .got.plt, which is never readonly. */
+ target = bfd_get_section_by_name (output_bfd, name + 5);
+ if (target != NULL
+ && (target->flags & SEC_READONLY) != 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 (strncmp (name, ".got", 4) != 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_alloc (dynobj, s->_raw_size);
+ if (s->contents == NULL && s->_raw_size != 0)
+ {
+ bfd_set_error (bfd_error_no_memory);
+ return false;
+ }
+ }
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* Add some entries to the .dynamic section. We fill in the
+ values later, in elf_m68k_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;
+ }
+ }
+
+ /* 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. */
+ if (info->shared)
+ {
+ int c, i;
+
+ c = bfd_count_sections (output_bfd);
+ elf_link_hash_traverse (elf_hash_table (info),
+ elf_m68k_adjust_dynindx,
+ (PTR) &c);
+ elf_hash_table (info)->dynsymcount += c;
+
+ for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++)
+ {
+ elf_section_data (s)->dynindx = i;
+ /* These symbols will have no names, so we don't need to
+ fiddle with dynstr_index. */
+ }
+ }
+
+ return true;
+}
+
+/* Increment the index of a dynamic symbol by a given amount. Called
+ via elf_link_hash_traverse. */
+
+static boolean
+elf_m68k_adjust_dynindx (h, cparg)
+ struct elf_link_hash_entry *h;
+ PTR cparg;
+{
+ int *cp = (int *) cparg;
+
+ if (h->dynindx != -1)
+ h->dynindx += *cp;
+ return true;
+}
+
+/* Relocate an M68K ELF section. */
+
+static boolean
+elf_m68k_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;
+{
+ bfd *dynobj;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ bfd_vma *local_got_offsets;
+ asection *sgot;
+ asection *sgotplt;
+ asection *splt;
+ asection *sreloc;
+ Elf_Internal_Rela *rel;
+ Elf_Internal_Rela *relend;
+
+ dynobj = elf_hash_table (info)->dynobj;
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (input_bfd);
+ local_got_offsets = elf_local_got_offsets (input_bfd);
+
+ sgot = NULL;
+ sgotplt = NULL;
+ splt = NULL;
+ sreloc = NULL;
+
+ rel = relocs;
+ relend = relocs + input_section->reloc_count;
+ for (; rel < relend; rel++)
+ {
+ int r_type;
+ reloc_howto_type *howto;
+ long r_symndx;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+ asection *sec;
+ bfd_vma relocation;
+ bfd_reloc_status_type r;
+
+ r_type = ELF32_R_TYPE (rel->r_info);
+ if (r_type < 0 || r_type >= (int) R_68K__max)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ howto = howto_table + 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 (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ {
+ sec = local_sections[r_symndx];
+ rel->r_addend += sec->output_offset + sym->st_value;
+ }
+ }
+
+ continue;
+ }
+
+ /* This is a final link. */
+ 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);
+ }
+ else
+ {
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ sec = h->root.u.def.section;
+ if (((r_type == R_68K_PLT8
+ || r_type == R_68K_PLT16
+ || r_type == R_68K_PLT32
+ || r_type == R_68K_PLT8O
+ || r_type == R_68K_PLT16O
+ || r_type == R_68K_PLT32O)
+ && h->plt_offset != (bfd_vma) -1)
+ || ((r_type == R_68K_GOT8O
+ || r_type == R_68K_GOT16O
+ || r_type == R_68K_GOT32O
+ || ((r_type == R_68K_GOT8
+ || r_type == R_68K_GOT16
+ || r_type == R_68K_GOT32)
+ && strcmp (h->root.root.string,
+ "_GLOBAL_OFFSET_TABLE_") != 0))
+ && elf_hash_table (info)->dynamic_sections_created)
+ || (info->shared
+ && (input_section->flags & SEC_ALLOC) != 0
+ && (r_type == R_68K_8
+ || r_type == R_68K_16
+ || r_type == R_68K_32
+ || r_type == R_68K_PC8
+ || r_type == R_68K_PC16
+ || r_type == R_68K_PC32)))
+ {
+ /* 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)
+ relocation = 0;
+ else
+ {
+ if (!(info->callbacks->undefined_symbol
+ (info, h->root.root.string, input_bfd,
+ input_section, rel->r_offset)))
+ return false;
+ relocation = 0;
+ }
+ }
+
+ switch (r_type)
+ {
+ case R_68K_GOT8:
+ case R_68K_GOT16:
+ case R_68K_GOT32:
+ /* Relocation is to the entry for this symbol in the global
+ offset table. */
+ if (h != NULL
+ && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
+ break;
+ /* Fall through. */
+ case R_68K_GOT8O:
+ case R_68K_GOT16O:
+ case R_68K_GOT32O:
+ /* Relocation is the offset of the entry for this symbol in
+ the global offset table. */
+
+ if (sgot == NULL)
+ {
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+ BFD_ASSERT (sgot != NULL);
+ }
+
+ if (sgotplt == NULL)
+ {
+ sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
+ BFD_ASSERT (sgotplt != NULL);
+ }
+
+ if (h != NULL)
+ {
+ bfd_vma off;
+
+ off = h->got_offset;
+ BFD_ASSERT (off != (bfd_vma) -1);
+
+ if (!elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* This is actually a static link. We must
+ initialize this entry in the global offset table.
+ Since the offset must always be a multiple of 4,
+ we use the least significant bit to record
+ whether we have initialized it already.
+
+ When doing a dynamic link, we create a .rela.got
+ relocation entry to initialize the value. This
+ is done in the finish_dynamic_symbol routine. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_put_32 (output_bfd, relocation,
+ sgot->contents + off);
+ h->got_offset |= 1;
+ }
+ }
+
+ relocation = sgot->output_offset + off;
+ if (r_type == R_68K_GOT8O
+ || r_type == R_68K_GOT16O
+ || r_type == R_68K_GOT32O)
+ relocation -= sgotplt->output_offset;
+ }
+ else
+ {
+ bfd_vma off;
+
+ BFD_ASSERT (local_got_offsets != NULL
+ && local_got_offsets[r_symndx] != (bfd_vma) -1);
+
+ off = local_got_offsets[r_symndx];
+
+ /* The offset must always be a multiple of 4. We use
+ the least significant bit to record whether we have
+ already generated the necessary reloc. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_put_32 (output_bfd, relocation, sgot->contents + off);
+
+ if (info->shared)
+ {
+ asection *srelgot;
+ Elf_Internal_Rela outrel;
+
+ srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
+ BFD_ASSERT (srelgot != NULL);
+
+ outrel.r_offset = (sgot->output_section->vma
+ + sgot->output_offset
+ + off);
+ outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
+ outrel.r_addend = 0;
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel,
+ (((Elf32_External_Rela *)
+ srelgot->contents)
+ + srelgot->reloc_count));
+ ++srelgot->reloc_count;
+ }
+
+ local_got_offsets[r_symndx] |= 1;
+ }
+
+ relocation = sgot->output_offset + off;
+ if (r_type == R_68K_GOT8O
+ || r_type == R_68K_GOT16O
+ || r_type == R_68K_GOT32O)
+ relocation -= sgotplt->output_offset;
+ }
+
+ break;
+
+ case R_68K_PLT8:
+ case R_68K_PLT16:
+ case R_68K_PLT32:
+ /* Relocation is to the entry for this symbol in the
+ procedure linkage table. */
+
+ /* Resolve a PLT32 reloc against a local symbol directly,
+ without using the procedure linkage table. */
+ if (h == NULL)
+ break;
+
+ if (h->plt_offset == (bfd_vma) -1)
+ {
+ /* We didn't make a PLT entry for this symbol. This
+ happens when statically linking PIC code. */
+ break;
+ }
+
+ if (splt == NULL)
+ {
+ splt = bfd_get_section_by_name (dynobj, ".plt");
+ BFD_ASSERT (splt != NULL);
+ }
+
+ relocation = (splt->output_section->vma
+ + splt->output_offset
+ + h->plt_offset);
+ break;
+
+ case R_68K_PLT8O:
+ case R_68K_PLT16O:
+ case R_68K_PLT32O:
+ /* Relocation is the offset of the entry for this symbol in
+ the procedure linkage table. */
+ BFD_ASSERT (h != NULL);
+
+ if (h->plt_offset == (bfd_vma) -1)
+ {
+ /* We didn't make a PLT entry for this symbol. This
+ happens when statically linking PIC code. */
+ break;
+ }
+
+ if (splt == NULL)
+ {
+ splt = bfd_get_section_by_name (dynobj, ".plt");
+ BFD_ASSERT (splt != NULL);
+ }
+
+ relocation = h->plt_offset;
+ break;
+
+ case R_68K_8:
+ case R_68K_16:
+ case R_68K_32:
+ case R_68K_PC8:
+ case R_68K_PC16:
+ case R_68K_PC32:
+ if (info->shared
+ && (input_section->flags & SEC_ALLOC) != 0)
+ {
+ Elf_Internal_Rela outrel;
+
+ /* 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 = (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);
+ }
+
+ outrel.r_offset = (rel->r_offset
+ + input_section->output_section->vma
+ + input_section->output_offset);
+ if (h != NULL)
+ {
+ 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_68K_32)
+ {
+ outrel.r_info = ELF32_R_INFO (0, R_68K_RELATIVE);
+ outrel.r_addend = relocation + rel->r_addend;
+ }
+ else
+ {
+ long indx;
+
+ sym = local_syms + r_symndx;
+
+ BFD_ASSERT (ELF_ST_TYPE (sym->st_info) == STT_SECTION);
+
+ sec = local_sections[r_symndx];
+ 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;
+ if (indx == 0)
+ abort ();
+ }
+
+ 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. */
+ continue;
+ }
+
+ break;
+
+ default:
+ break;
+ }
+
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset,
+ relocation, rel->r_addend);
+
+ if (r != bfd_reloc_ok)
+ {
+ switch (r)
+ {
+ default:
+ case bfd_reloc_outofrange:
+ abort ();
+ case bfd_reloc_overflow:
+ {
+ const char *name;
+
+ if (h != NULL)
+ name = h->root.root.string;
+ else
+ {
+ name = elf_string_from_elf_section (input_bfd,
+ symtab_hdr->sh_link,
+ sym->st_name);
+ if (name == NULL)
+ return false;
+ if (*name == '\0')
+ name = bfd_section_name (input_bfd, sec);
+ }
+ if (!(info->callbacks->reloc_overflow
+ (info, name, howto->name, (bfd_vma) 0,
+ input_bfd, input_section, rel->r_offset)))
+ return false;
+ }
+ break;
+ }
+ }
+ }
+
+ return true;
+}
+
+/* Finish up dynamic symbol handling. We set the contents of various
+ dynamic sections here. */
+
+static boolean
+elf_m68k_finish_dynamic_symbol (output_bfd, info, h, sym)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+{
+ bfd *dynobj;
+
+ dynobj = elf_hash_table (info)->dynobj;
+
+ if (h->plt_offset != (bfd_vma) -1)
+ {
+ asection *splt;
+ asection *sgot;
+ asection *srela;
+ bfd_vma plt_index;
+ bfd_vma got_offset;
+ Elf_Internal_Rela rela;
+
+ /* This symbol has an entry in the procedure linkage table. Set
+ it up. */
+
+ BFD_ASSERT (h->dynindx != -1);
+
+ splt = bfd_get_section_by_name (dynobj, ".plt");
+ sgot = bfd_get_section_by_name (dynobj, ".got.plt");
+ srela = bfd_get_section_by_name (dynobj, ".rela.plt");
+ BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
+
+ /* Get the index in the procedure linkage table which
+ corresponds to this symbol. This is the index of this symbol
+ in all the symbols for which we are making plt entries. The
+ first entry in the procedure linkage table is reserved. */
+ plt_index = h->plt_offset / PLT_ENTRY_SIZE - 1;
+
+ /* Get the offset into the .got table of the entry that
+ corresponds to this function. Each .got entry is 4 bytes.
+ The first three are reserved. */
+ got_offset = (plt_index + 3) * 4;
+
+ /* Fill in the entry in the procedure linkage table. */
+ memcpy (splt->contents + h->plt_offset, elf_m68k_plt_entry,
+ PLT_ENTRY_SIZE);
+ /* The offset is relative to the first extension word. */
+ bfd_put_32 (output_bfd,
+ (sgot->output_section->vma
+ + sgot->output_offset
+ + got_offset
+ - (splt->output_section->vma
+ + h->plt_offset + 2)),
+ splt->contents + h->plt_offset + 4);
+
+ bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
+ splt->contents + h->plt_offset + 10);
+ bfd_put_32 (output_bfd, - (h->plt_offset + 16),
+ splt->contents + h->plt_offset + 16);
+
+ /* Fill in the entry in the global offset table. */
+ bfd_put_32 (output_bfd,
+ (splt->output_section->vma
+ + splt->output_offset
+ + h->plt_offset
+ + 8),
+ sgot->contents + got_offset);
+
+ /* Fill in the entry in the .rela.plt section. */
+ rela.r_offset = (sgot->output_section->vma
+ + sgot->output_offset
+ + got_offset);
+ rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_JMP_SLOT);
+ rela.r_addend = 0;
+ bfd_elf32_swap_reloca_out (output_bfd, &rela,
+ ((Elf32_External_Rela *) srela->contents
+ + plt_index));
+
+ if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ {
+ /* Mark the symbol as undefined, rather than as defined in
+ the .plt section. Leave the value alone. */
+ sym->st_shndx = SHN_UNDEF;
+ }
+ }
+
+ if (h->got_offset != (bfd_vma) -1)
+ {
+ asection *sgot;
+ asection *srela;
+ Elf_Internal_Rela rela;
+
+ /* This symbol has an entry in the global offset table. Set it
+ up. */
+
+ BFD_ASSERT (h->dynindx != -1);
+
+ sgot = bfd_get_section_by_name (dynobj, ".got");
+ srela = bfd_get_section_by_name (dynobj, ".rela.got");
+ BFD_ASSERT (sgot != NULL && srela != NULL);
+
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got_offset);
+
+ rela.r_offset = (sgot->output_section->vma
+ + sgot->output_offset
+ + h->got_offset);
+ rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_GLOB_DAT);
+ rela.r_addend = 0;
+ bfd_elf32_swap_reloca_out (output_bfd, &rela,
+ ((Elf32_External_Rela *) srela->contents
+ + srela->reloc_count));
+ ++srela->reloc_count;
+ }
+
+ if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
+ {
+ asection *s;
+ Elf_Internal_Rela rela;
+
+ /* This symbol needs a copy reloc. Set it up. */
+
+ BFD_ASSERT (h->dynindx != -1
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak));
+
+ s = bfd_get_section_by_name (h->root.u.def.section->owner,
+ ".rela.bss");
+ BFD_ASSERT (s != NULL);
+
+ rela.r_offset = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ rela.r_info = ELF32_R_INFO (h->dynindx, R_68K_COPY);
+ rela.r_addend = 0;
+ bfd_elf32_swap_reloca_out (output_bfd, &rela,
+ ((Elf32_External_Rela *) s->contents
+ + s->reloc_count));
+ ++s->reloc_count;
+ }
+
+ /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
+ if (strcmp (h->root.root.string, "_DYNAMIC") == 0
+ || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
+ sym->st_shndx = SHN_ABS;
+
+ return true;
+}
+
+/* Finish up the dynamic sections. */
+
+static boolean
+elf_m68k_finish_dynamic_sections (output_bfd, info)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+{
+ bfd *dynobj;
+ asection *sgot;
+ asection *sdyn;
+
+ dynobj = elf_hash_table (info)->dynobj;
+
+ sgot = bfd_get_section_by_name (dynobj, ".got.plt");
+ BFD_ASSERT (sgot != NULL);
+ 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;
+ asection *s;
+
+ bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
+
+ switch (dyn.d_tag)
+ {
+ default:
+ break;
+
+ case DT_PLTGOT:
+ name = ".got";
+ goto get_vma;
+ case DT_JMPREL:
+ name = ".rela.plt";
+ get_vma:
+ s = bfd_get_section_by_name (output_bfd, name);
+ BFD_ASSERT (s != NULL);
+ dyn.d_un.d_ptr = s->vma;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_PLTRELSZ:
+ s = bfd_get_section_by_name (output_bfd, ".rela.plt");
+ BFD_ASSERT (s != NULL);
+ 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);
+ break;
+
+ case DT_RELASZ:
+ /* My reading of the SVR4 ABI indicates that the
+ procedure linkage table relocs (DT_JMPREL) should be
+ included in the overall relocs (DT_RELA). This is
+ what Solaris does. However, UnixWare can not handle
+ that case. Therefore, we override the DT_RELASZ entry
+ here to make it not include the JMPREL relocs. Since
+ the linker script arranges for .rela.plt to follow all
+ other relocation sections, we don't have to worry
+ about changing the DT_RELA entry. */
+ /* FIXME: This comment is from elf32-i386.c, what about
+ the SVR4/m68k implementations? */
+ s = bfd_get_section_by_name (output_bfd, ".rela.plt");
+ if (s != NULL)
+ {
+ 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);
+ break;
+ }
+ }
+
+ /* Fill in the first entry in the procedure linkage table. */
+ if (splt->_raw_size > 0)
+ {
+ memcpy (splt->contents, elf_m68k_plt0_entry, PLT_ENTRY_SIZE);
+ bfd_put_32 (output_bfd,
+ (sgot->output_section->vma
+ + sgot->output_offset + 4
+ - (splt->output_section->vma + 2)),
+ splt->contents + 4);
+ bfd_put_32 (output_bfd,
+ (sgot->output_section->vma
+ + sgot->output_offset + 8
+ - (splt->output_section->vma + 10)),
+ splt->contents + 12);
+ }
+
+ elf_section_data (splt->output_section)->this_hdr.sh_entsize
+ = PLT_ENTRY_SIZE;
+ }
+
+ /* Fill in the first three entries in the global offset table. */
+ if (sgot->_raw_size > 0)
+ {
+ if (sdyn == NULL)
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
+ else
+ bfd_put_32 (output_bfd,
+ sdyn->output_section->vma + sdyn->output_offset,
+ sgot->contents);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
+ }
+
+ elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
+
+ return true;
+}
+
+#define TARGET_BIG_SYM bfd_elf32_m68k_vec
+#define TARGET_BIG_NAME "elf32-m68k"
+#define ELF_MACHINE_CODE EM_68K
+#define ELF_MAXPAGESIZE 0x2000
+#define elf_backend_create_dynamic_sections \
+ elf_m68k_create_dynamic_sections
+#define elf_backend_check_relocs elf_m68k_check_relocs
+#define elf_backend_adjust_dynamic_symbol \
+ elf_m68k_adjust_dynamic_symbol
+#define elf_backend_size_dynamic_sections \
+ elf_m68k_size_dynamic_sections
+#define elf_backend_relocate_section elf_m68k_relocate_section
+#define elf_backend_finish_dynamic_symbol \
+ elf_m68k_finish_dynamic_symbol
+#define elf_backend_finish_dynamic_sections \
+ elf_m68k_finish_dynamic_sections
+
+#include "elf32-target.h"
projects / binutils-gdb.git / commitdiff