diff options
Diffstat (limited to 'binutils-2.17/bfd/elf-m10300.c')
| -rw-r--r-- | binutils-2.17/bfd/elf-m10300.c | 4711 |
1 files changed, 0 insertions, 4711 deletions
diff --git a/binutils-2.17/bfd/elf-m10300.c b/binutils-2.17/bfd/elf-m10300.c deleted file mode 100644 index 509f2a10..00000000 --- a/binutils-2.17/bfd/elf-m10300.c +++ /dev/null @@ -1,4711 +0,0 @@ -/* Matsushita 10300 specific support for 32-bit ELF - Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, - 2006 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ - -#include "bfd.h" -#include "sysdep.h" -#include "libbfd.h" -#include "elf-bfd.h" -#include "elf/mn10300.h" - -static bfd_reloc_status_type mn10300_elf_final_link_relocate - PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *, - bfd_vma, bfd_vma, bfd_vma, - struct elf_link_hash_entry *, unsigned long, struct bfd_link_info *, - asection *, int)); -static bfd_boolean mn10300_elf_relocate_section - PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, - Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); -static bfd_boolean mn10300_elf_relax_section - PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *)); -static bfd_byte * mn10300_elf_get_relocated_section_contents - PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, - bfd_byte *, bfd_boolean, asymbol **)); -static unsigned long elf_mn10300_mach - PARAMS ((flagword)); -void _bfd_mn10300_elf_final_write_processing - PARAMS ((bfd *, bfd_boolean)); -bfd_boolean _bfd_mn10300_elf_object_p - PARAMS ((bfd *)); -bfd_boolean _bfd_mn10300_elf_merge_private_bfd_data - PARAMS ((bfd *,bfd *)); - -/* The mn10300 linker needs to keep track of the number of relocs that - it decides to copy in check_relocs for each symbol. This is so - that it can discard PC relative relocs if it doesn't need them when - linking with -Bsymbolic. We store the information in a field - extending the regular ELF linker hash table. */ - -struct elf32_mn10300_link_hash_entry { - /* The basic elf link hash table entry. */ - struct elf_link_hash_entry root; - - /* For function symbols, the number of times this function is - called directly (ie by name). */ - unsigned int direct_calls; - - /* For function symbols, the size of this function's stack - (if <= 255 bytes). We stuff this into "call" instructions - to this target when it's valid and profitable to do so. - - This does not include stack allocated by movm! */ - unsigned char stack_size; - - /* For function symbols, arguments (if any) for movm instruction - in the prologue. We stuff this value into "call" instructions - to the target when it's valid and profitable to do so. */ - unsigned char movm_args; - - /* For function symbols, the amount of stack space that would be allocated - by the movm instruction. This is redundant with movm_args, but we - add it to the hash table to avoid computing it over and over. */ - unsigned char movm_stack_size; - -/* When set, convert all "call" instructions to this target into "calls" - instructions. */ -#define MN10300_CONVERT_CALL_TO_CALLS 0x1 - -/* Used to mark functions which have had redundant parts of their - prologue deleted. */ -#define MN10300_DELETED_PROLOGUE_BYTES 0x2 - unsigned char flags; -}; - -/* We derive a hash table from the main elf linker hash table so - we can store state variables and a secondary hash table without - resorting to global variables. */ -struct elf32_mn10300_link_hash_table { - /* The main hash table. */ - struct elf_link_hash_table root; - - /* A hash table for static functions. We could derive a new hash table - instead of using the full elf32_mn10300_link_hash_table if we wanted - to save some memory. */ - struct elf32_mn10300_link_hash_table *static_hash_table; - - /* Random linker state flags. */ -#define MN10300_HASH_ENTRIES_INITIALIZED 0x1 - char flags; -}; - -/* For MN10300 linker hash table. */ - -/* Get the MN10300 ELF linker hash table from a link_info structure. */ - -#define elf32_mn10300_hash_table(p) \ - ((struct elf32_mn10300_link_hash_table *) ((p)->hash)) - -#define elf32_mn10300_link_hash_traverse(table, func, info) \ - (elf_link_hash_traverse \ - (&(table)->root, \ - (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ - (info))) - -static struct bfd_hash_entry *elf32_mn10300_link_hash_newfunc - PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); -static struct bfd_link_hash_table *elf32_mn10300_link_hash_table_create - PARAMS ((bfd *)); -static void elf32_mn10300_link_hash_table_free - PARAMS ((struct bfd_link_hash_table *)); - -static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup - PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); -static void mn10300_info_to_howto - PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); -static bfd_boolean mn10300_elf_check_relocs - PARAMS ((bfd *, struct bfd_link_info *, asection *, - const Elf_Internal_Rela *)); -static asection *mn10300_elf_gc_mark_hook - PARAMS ((asection *, struct bfd_link_info *info, Elf_Internal_Rela *, - struct elf_link_hash_entry *, Elf_Internal_Sym *)); -static bfd_boolean mn10300_elf_relax_delete_bytes - PARAMS ((bfd *, asection *, bfd_vma, int)); -static bfd_boolean mn10300_elf_symbol_address_p - PARAMS ((bfd *, asection *, Elf_Internal_Sym *, bfd_vma)); -static bfd_boolean elf32_mn10300_finish_hash_table_entry - PARAMS ((struct bfd_hash_entry *, PTR)); -static void compute_function_info - PARAMS ((bfd *, struct elf32_mn10300_link_hash_entry *, - bfd_vma, unsigned char *)); - -static bfd_boolean _bfd_mn10300_elf_create_got_section - PARAMS ((bfd *, struct bfd_link_info *)); -static bfd_boolean _bfd_mn10300_elf_create_dynamic_sections - PARAMS ((bfd *, struct bfd_link_info *)); -static bfd_boolean _bfd_mn10300_elf_adjust_dynamic_symbol - PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); -static bfd_boolean _bfd_mn10300_elf_size_dynamic_sections - PARAMS ((bfd *, struct bfd_link_info *)); -static bfd_boolean _bfd_mn10300_elf_finish_dynamic_symbol - PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, - Elf_Internal_Sym *)); -static bfd_boolean _bfd_mn10300_elf_finish_dynamic_sections - PARAMS ((bfd *, struct bfd_link_info *)); - -static reloc_howto_type elf_mn10300_howto_table[] = { - /* Dummy relocation. Does nothing. */ - HOWTO (R_MN10300_NONE, - 0, - 2, - 16, - FALSE, - 0, - complain_overflow_bitfield, - bfd_elf_generic_reloc, - "R_MN10300_NONE", - FALSE, - 0, - 0, - FALSE), - /* Standard 32 bit reloc. */ - HOWTO (R_MN10300_32, - 0, - 2, - 32, - FALSE, - 0, - complain_overflow_bitfield, - bfd_elf_generic_reloc, - "R_MN10300_32", - FALSE, - 0xffffffff, - 0xffffffff, - FALSE), - /* Standard 16 bit reloc. */ - HOWTO (R_MN10300_16, - 0, - 1, - 16, - FALSE, - 0, - complain_overflow_bitfield, - bfd_elf_generic_reloc, - "R_MN10300_16", - FALSE, - 0xffff, - 0xffff, - FALSE), - /* Standard 8 bit reloc. */ - HOWTO (R_MN10300_8, - 0, - 0, - 8, - FALSE, - 0, - complain_overflow_bitfield, - bfd_elf_generic_reloc, - "R_MN10300_8", - FALSE, - 0xff, - 0xff, - FALSE), - /* Standard 32bit pc-relative reloc. */ - HOWTO (R_MN10300_PCREL32, - 0, - 2, - 32, - TRUE, - 0, - complain_overflow_bitfield, - bfd_elf_generic_reloc, - "R_MN10300_PCREL32", - FALSE, - 0xffffffff, - 0xffffffff, - TRUE), - /* Standard 16bit pc-relative reloc. */ - HOWTO (R_MN10300_PCREL16, - 0, - 1, - 16, - TRUE, - 0, - complain_overflow_bitfield, - bfd_elf_generic_reloc, - "R_MN10300_PCREL16", - FALSE, - 0xffff, - 0xffff, - TRUE), - /* Standard 8 pc-relative reloc. */ - HOWTO (R_MN10300_PCREL8, - 0, - 0, - 8, - TRUE, - 0, - complain_overflow_bitfield, - bfd_elf_generic_reloc, - "R_MN10300_PCREL8", - FALSE, - 0xff, - 0xff, - TRUE), - - /* GNU extension to record C++ vtable hierarchy */ - HOWTO (R_MN10300_GNU_VTINHERIT, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - NULL, /* special_function */ - "R_MN10300_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_MN10300_GNU_VTENTRY, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 0, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - NULL, /* special_function */ - "R_MN10300_GNU_VTENTRY", /* name */ - FALSE, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - FALSE), /* pcrel_offset */ - - /* Standard 24 bit reloc. */ - HOWTO (R_MN10300_24, - 0, - 2, - 24, - FALSE, - 0, - complain_overflow_bitfield, - bfd_elf_generic_reloc, - "R_MN10300_24", - FALSE, - 0xffffff, - 0xffffff, - FALSE), - HOWTO (R_MN10300_GOTPC32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* */ - "R_MN10300_GOTPC32", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MN10300_GOTPC16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* */ - "R_MN10300_GOTPC16", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MN10300_GOTOFF32, /* 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, /* */ - "R_MN10300_GOTOFF32", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_MN10300_GOTOFF24, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 24, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* */ - "R_MN10300_GOTOFF24", /* name */ - FALSE, /* partial_inplace */ - 0xffffff, /* src_mask */ - 0xffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_MN10300_GOTOFF16, /* 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, /* */ - "R_MN10300_GOTOFF16", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_MN10300_PLT32, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* */ - "R_MN10300_PLT32", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MN10300_PLT16, /* type */ - 0, /* rightshift */ - 1, /* size (0 = byte, 1 = short, 2 = long) */ - 16, /* bitsize */ - TRUE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* */ - "R_MN10300_PLT16", /* name */ - FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ - 0xffff, /* dst_mask */ - TRUE), /* pcrel_offset */ - - HOWTO (R_MN10300_GOT32, /* 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, /* */ - "R_MN10300_GOT32", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_MN10300_GOT24, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 24, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* */ - "R_MN10300_GOT24", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_MN10300_GOT16, /* 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, /* */ - "R_MN10300_GOT16", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_MN10300_COPY, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* */ - "R_MN10300_COPY", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_MN10300_GLOB_DAT, /* 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, /* */ - "R_MN10300_GLOB_DAT", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_MN10300_JMP_SLOT, /* 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, /* */ - "R_MN10300_JMP_SLOT", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - - HOWTO (R_MN10300_RELATIVE, /* type */ - 0, /* rightshift */ - 2, /* size (0 = byte, 1 = short, 2 = long) */ - 32, /* bitsize */ - FALSE, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_bitfield, /* complain_on_overflow */ - bfd_elf_generic_reloc, /* */ - "R_MN10300_RELATIVE", /* name */ - FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ - 0xffffffff, /* dst_mask */ - FALSE), /* pcrel_offset */ - -}; - -struct mn10300_reloc_map { - bfd_reloc_code_real_type bfd_reloc_val; - unsigned char elf_reloc_val; -}; - -static const struct mn10300_reloc_map mn10300_reloc_map[] = { - { BFD_RELOC_NONE, R_MN10300_NONE, }, - { BFD_RELOC_32, R_MN10300_32, }, - { BFD_RELOC_16, R_MN10300_16, }, - { BFD_RELOC_8, R_MN10300_8, }, - { BFD_RELOC_32_PCREL, R_MN10300_PCREL32, }, - { BFD_RELOC_16_PCREL, R_MN10300_PCREL16, }, - { BFD_RELOC_8_PCREL, R_MN10300_PCREL8, }, - { BFD_RELOC_24, R_MN10300_24, }, - { BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT }, - { BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY }, - { BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 }, - { BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 }, - { BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 }, - { BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 }, - { BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 }, - { BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 }, - { BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 }, - { BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 }, - { BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 }, - { BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 }, - { BFD_RELOC_MN10300_COPY, R_MN10300_COPY }, - { BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT }, - { BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT }, - { BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE }, -}; - -/* Create the GOT section. */ - -static bfd_boolean -_bfd_mn10300_elf_create_got_section (abfd, info) - bfd * abfd; - struct bfd_link_info * info; -{ - flagword flags; - flagword pltflags; - asection * s; - struct elf_link_hash_entry * h; - const struct elf_backend_data * bed = get_elf_backend_data (abfd); - int ptralign; - - /* This function may be called more than once. */ - if (bfd_get_section_by_name (abfd, ".got") != NULL) - return TRUE; - - switch (bed->s->arch_size) - { - case 32: - ptralign = 2; - break; - - case 64: - ptralign = 3; - break; - - default: - bfd_set_error (bfd_error_bad_value); - return FALSE; - } - - flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY - | SEC_LINKER_CREATED); - - pltflags = flags; - pltflags |= SEC_CODE; - if (bed->plt_not_loaded) - pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); - if (bed->plt_readonly) - pltflags |= SEC_READONLY; - - s = bfd_make_section_with_flags (abfd, ".plt", pltflags); - if (s == NULL - || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) - return FALSE; - - /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the - .plt section. */ - if (bed->want_plt_sym) - { - h = _bfd_elf_define_linkage_sym (abfd, info, s, - "_PROCEDURE_LINKAGE_TABLE_"); - elf_hash_table (info)->hplt = h; - if (h == NULL) - return FALSE; - } - - s = bfd_make_section_with_flags (abfd, ".got", flags); - if (s == NULL - || ! bfd_set_section_alignment (abfd, s, ptralign)) - return FALSE; - - if (bed->want_got_plt) - { - s = bfd_make_section_with_flags (abfd, ".got.plt", flags); - if (s == NULL - || ! bfd_set_section_alignment (abfd, s, ptralign)) - return FALSE; - } - - /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got - (or .got.plt) 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 = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_"); - elf_hash_table (info)->hgot = h; - if (h == NULL) - return FALSE; - - /* The first bit of the global offset table is the header. */ - s->size += bed->got_header_size; - - return TRUE; -} - -static reloc_howto_type * -bfd_elf32_bfd_reloc_type_lookup (abfd, code) - bfd *abfd ATTRIBUTE_UNUSED; - bfd_reloc_code_real_type code; -{ - unsigned int i; - - for (i = 0; - i < sizeof (mn10300_reloc_map) / sizeof (struct mn10300_reloc_map); - i++) - { - if (mn10300_reloc_map[i].bfd_reloc_val == code) - return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val]; - } - - return NULL; -} - -/* Set the howto pointer for an MN10300 ELF reloc. */ - -static void -mn10300_info_to_howto (abfd, cache_ptr, dst) - 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_MN10300_MAX); - cache_ptr->howto = &elf_mn10300_howto_table[r_type]; -} - -/* 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 -mn10300_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; - bfd * dynobj; - bfd_vma * local_got_offsets; - asection * sgot; - asection * srelgot; - asection * sreloc; - - sgot = NULL; - srelgot = NULL; - sreloc = NULL; - - if (info->relocatable) - 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; - - dynobj = elf_hash_table (info)->dynobj; - local_got_offsets = elf_local_got_offsets (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; - } - - /* Some relocs require a global offset table. */ - if (dynobj == NULL) - { - switch (ELF32_R_TYPE (rel->r_info)) - { - case R_MN10300_GOT32: - case R_MN10300_GOT24: - case R_MN10300_GOT16: - case R_MN10300_GOTOFF32: - case R_MN10300_GOTOFF24: - case R_MN10300_GOTOFF16: - case R_MN10300_GOTPC32: - case R_MN10300_GOTPC16: - elf_hash_table (info)->dynobj = dynobj = abfd; - if (! _bfd_mn10300_elf_create_got_section (dynobj, info)) - return FALSE; - break; - - default: - break; - } - } - - switch (ELF32_R_TYPE (rel->r_info)) - { - /* This relocation describes the C++ object vtable hierarchy. - Reconstruct it for later use during GC. */ - case R_MN10300_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_MN10300_GNU_VTENTRY: - if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) - return FALSE; - break; - case R_MN10300_GOT32: - case R_MN10300_GOT24: - case R_MN10300_GOT16: - /* This symbol requires a global offset table entry. */ - - 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_with_flags (dynobj, - ".rela.got", - (SEC_ALLOC - | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY - | SEC_LINKER_CREATED - | SEC_READONLY)); - if (srelgot == NULL - || ! 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->size; - - /* Make sure this symbol is output as a dynamic symbol. */ - if (h->dynindx == -1) - { - if (! bfd_elf_link_record_dynamic_symbol (info, h)) - return FALSE; - } - - srelgot->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; - unsigned int i; - - size = symtab_hdr->sh_info * sizeof (bfd_vma); - local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size); - - if (local_got_offsets == NULL) - 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->size; - - if (info->shared) - /* If we are generating a shared object, we need to - output a R_MN10300_RELATIVE reloc so that the dynamic - linker can adjust this GOT entry. */ - srelgot->size += sizeof (Elf32_External_Rela); - } - - sgot->size += 4; - - break; - - case R_MN10300_PLT32: - case R_MN10300_PLT16: - /* 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 which is - never referenced by a dynamic object, in which case we - don't need to generate a procedure linkage table entry - after all. */ - - /* If this is a local symbol, we resolve it directly without - creating a procedure linkage table entry. */ - if (h == NULL) - continue; - - if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL - || ELF_ST_VISIBILITY (h->other) == STV_HIDDEN) - break; - - h->needs_plt = 1; - - break; - - case R_MN10300_24: - case R_MN10300_16: - case R_MN10300_8: - case R_MN10300_PCREL32: - case R_MN10300_PCREL16: - case R_MN10300_PCREL8: - if (h != NULL) - h->non_got_ref = 1; - break; - - case R_MN10300_32: - if (h != NULL) - h->non_got_ref = 1; - - /* If we are creating a shared library, then we need to copy - the reloc into the shared library. */ - 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 = (bfd_elf_string_from_elf_section - (abfd, - elf_elfheader (abfd)->e_shstrndx, - elf_section_data (sec)->rel_hdr.sh_name)); - if (name == NULL) - return FALSE; - - BFD_ASSERT (strncmp (name, ".rela", 5) == 0 - && strcmp (bfd_get_section_name (abfd, sec), - name + 5) == 0); - - sreloc = bfd_get_section_by_name (dynobj, name); - if (sreloc == NULL) - { - flagword flags; - - flags = (SEC_HAS_CONTENTS | SEC_READONLY - | SEC_IN_MEMORY | SEC_LINKER_CREATED); - if ((sec->flags & SEC_ALLOC) != 0) - flags |= SEC_ALLOC | SEC_LOAD; - sreloc = bfd_make_section_with_flags (dynobj, - name, - flags); - if (sreloc == NULL - || ! bfd_set_section_alignment (dynobj, sreloc, 2)) - return FALSE; - } - } - - sreloc->size += sizeof (Elf32_External_Rela); - } - - break; - } - } - - return TRUE; -} - -/* Return the section that should be marked against GC for a given - relocation. */ - -static asection * -mn10300_elf_gc_mark_hook (sec, info, rel, h, sym) - asection *sec; - struct bfd_link_info *info ATTRIBUTE_UNUSED; - 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_MN10300_GNU_VTINHERIT: - case R_MN10300_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 - return bfd_section_from_elf_index (sec->owner, sym->st_shndx); - - return NULL; -} - -/* Perform a relocation as part of a final link. */ -static bfd_reloc_status_type -mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, - input_section, contents, offset, value, - addend, h, symndx, info, sym_sec, is_local) - reloc_howto_type *howto; - bfd *input_bfd; - bfd *output_bfd ATTRIBUTE_UNUSED; - asection *input_section; - bfd_byte *contents; - bfd_vma offset; - bfd_vma value; - bfd_vma addend; - struct elf_link_hash_entry * h; - unsigned long symndx; - struct bfd_link_info *info; - asection *sym_sec ATTRIBUTE_UNUSED; - int is_local ATTRIBUTE_UNUSED; -{ - unsigned long r_type = howto->type; - bfd_byte *hit_data = contents + offset; - bfd * dynobj; - bfd_vma * local_got_offsets; - asection * sgot; - asection * splt; - asection * sreloc; - - dynobj = elf_hash_table (info)->dynobj; - local_got_offsets = elf_local_got_offsets (input_bfd); - - sgot = NULL; - splt = NULL; - sreloc = NULL; - - switch (r_type) - { - case R_MN10300_24: - case R_MN10300_16: - case R_MN10300_8: - case R_MN10300_PCREL8: - case R_MN10300_PCREL16: - case R_MN10300_PCREL32: - case R_MN10300_GOTOFF32: - case R_MN10300_GOTOFF24: - case R_MN10300_GOTOFF16: - if (info->shared - && (input_section->flags & SEC_ALLOC) != 0 - && h != NULL - && ! SYMBOL_REFERENCES_LOCAL (info, h)) - return bfd_reloc_dangerous; - } - - switch (r_type) - { - case R_MN10300_NONE: - return bfd_reloc_ok; - - case R_MN10300_32: - if (info->shared - && (input_section->flags & SEC_ALLOC) != 0) - { - Elf_Internal_Rela outrel; - bfd_boolean skip, relocate; - - /* When generating a shared object, these relocations are - copied into the output file to be resolved at run - time. */ - if (sreloc == NULL) - { - const char * name; - - name = (bfd_elf_string_from_elf_section - (input_bfd, - elf_elfheader (input_bfd)->e_shstrndx, - elf_section_data (input_section)->rel_hdr.sh_name)); - if (name == NULL) - return FALSE; - - BFD_ASSERT (strncmp (name, ".rela", 5) == 0 - && strcmp (bfd_get_section_name (input_bfd, - input_section), - name + 5) == 0); - - sreloc = bfd_get_section_by_name (dynobj, name); - BFD_ASSERT (sreloc != NULL); - } - - skip = FALSE; - - outrel.r_offset = _bfd_elf_section_offset (input_bfd, info, - input_section, offset); - if (outrel.r_offset == (bfd_vma) -1) - skip = TRUE; - - outrel.r_offset += (input_section->output_section->vma - + input_section->output_offset); - - if (skip) - { - memset (&outrel, 0, sizeof outrel); - relocate = FALSE; - } - else - { - /* h->dynindx may be -1 if this symbol was marked to - become local. */ - if (h == NULL - || SYMBOL_REFERENCES_LOCAL (info, h)) - { - relocate = TRUE; - outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); - outrel.r_addend = value + addend; - } - else - { - BFD_ASSERT (h->dynindx != -1); - relocate = FALSE; - outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32); - outrel.r_addend = value + addend; - } - } - - bfd_elf32_swap_reloca_out (output_bfd, &outrel, - (bfd_byte *) (((Elf32_External_Rela *) sreloc->contents) - + sreloc->reloc_count)); - ++sreloc->reloc_count; - - /* If this reloc is against an external symbol, we do - not want to fiddle with the addend. Otherwise, we - need to include the symbol value so that it becomes - an addend for the dynamic reloc. */ - if (! relocate) - return bfd_reloc_ok; - } - value += addend; - bfd_put_32 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_MN10300_24: - value += addend; - - if ((long) value > 0x7fffff || (long) value < -0x800000) - return bfd_reloc_overflow; - - bfd_put_8 (input_bfd, value & 0xff, hit_data); - bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); - bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); - return bfd_reloc_ok; - - case R_MN10300_16: - value += addend; - - if ((long) value > 0x7fff || (long) value < -0x8000) - return bfd_reloc_overflow; - - bfd_put_16 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_MN10300_8: - value += addend; - - if ((long) value > 0x7f || (long) value < -0x80) - return bfd_reloc_overflow; - - bfd_put_8 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_MN10300_PCREL8: - value -= (input_section->output_section->vma - + input_section->output_offset); - value -= offset; - value += addend; - - if ((long) value > 0xff || (long) value < -0x100) - return bfd_reloc_overflow; - - bfd_put_8 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_MN10300_PCREL16: - value -= (input_section->output_section->vma - + input_section->output_offset); - value -= offset; - value += addend; - - if ((long) value > 0xffff || (long) value < -0x10000) - return bfd_reloc_overflow; - - bfd_put_16 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_MN10300_PCREL32: - value -= (input_section->output_section->vma - + input_section->output_offset); - value -= offset; - value += addend; - - bfd_put_32 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_MN10300_GNU_VTINHERIT: - case R_MN10300_GNU_VTENTRY: - return bfd_reloc_ok; - - case R_MN10300_GOTPC32: - /* Use global offset table as symbol value. */ - - value = bfd_get_section_by_name (dynobj, - ".got")->output_section->vma; - value -= (input_section->output_section->vma - + input_section->output_offset); - value -= offset; - value += addend; - - bfd_put_32 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_MN10300_GOTPC16: - /* Use global offset table as symbol value. */ - - value = bfd_get_section_by_name (dynobj, - ".got")->output_section->vma; - value -= (input_section->output_section->vma - + input_section->output_offset); - value -= offset; - value += addend; - - if ((long) value > 0xffff || (long) value < -0x10000) - return bfd_reloc_overflow; - - bfd_put_16 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_MN10300_GOTOFF32: - value -= bfd_get_section_by_name (dynobj, - ".got")->output_section->vma; - value += addend; - - bfd_put_32 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_MN10300_GOTOFF24: - value -= bfd_get_section_by_name (dynobj, - ".got")->output_section->vma; - value += addend; - - if ((long) value > 0x7fffff || (long) value < -0x800000) - return bfd_reloc_overflow; - - bfd_put_8 (input_bfd, value, hit_data); - bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); - bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); - return bfd_reloc_ok; - - case R_MN10300_GOTOFF16: - value -= bfd_get_section_by_name (dynobj, - ".got")->output_section->vma; - value += addend; - - if ((long) value > 0xffff || (long) value < -0x10000) - return bfd_reloc_overflow; - - bfd_put_16 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_MN10300_PLT32: - if (h != NULL - && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL - && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN - && h->plt.offset != (bfd_vma) -1) - { - asection * splt; - - splt = bfd_get_section_by_name (dynobj, ".plt"); - - value = (splt->output_section->vma - + splt->output_offset - + h->plt.offset) - value; - } - - value -= (input_section->output_section->vma - + input_section->output_offset); - value -= offset; - value += addend; - - bfd_put_32 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_MN10300_PLT16: - if (h != NULL - && ELF_ST_VISIBILITY (h->other) != STV_INTERNAL - && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN - && h->plt.offset != (bfd_vma) -1) - { - asection * splt; - - splt = bfd_get_section_by_name (dynobj, ".plt"); - - value = (splt->output_section->vma - + splt->output_offset - + h->plt.offset) - value; - } - - value -= (input_section->output_section->vma - + input_section->output_offset); - value -= offset; - value += addend; - - if ((long) value > 0xffff || (long) value < -0x10000) - return bfd_reloc_overflow; - - bfd_put_16 (input_bfd, value, hit_data); - return bfd_reloc_ok; - - case R_MN10300_GOT32: - case R_MN10300_GOT24: - case R_MN10300_GOT16: - { - asection * sgot; - - sgot = bfd_get_section_by_name (dynobj, ".got"); - - if (h != NULL) - { - bfd_vma off; - - off = h->got.offset; - BFD_ASSERT (off != (bfd_vma) -1); - - if (! elf_hash_table (info)->dynamic_sections_created - || SYMBOL_REFERENCES_LOCAL (info, h)) - /* This is actually a static link, or it is a - -Bsymbolic link and the symbol is defined - locally, or the symbol was forced to be local - because of a version file. We must initialize - this entry in the global offset table. - - 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. */ - bfd_put_32 (output_bfd, value, - sgot->contents + off); - - value = sgot->output_offset + off; - } - else - { - bfd_vma off; - - off = elf_local_got_offsets (input_bfd)[symndx]; - - bfd_put_32 (output_bfd, value, 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_MN10300_RELATIVE); - outrel.r_addend = value; - bfd_elf32_swap_reloca_out (output_bfd, &outrel, - (bfd_byte *) (((Elf32_External_Rela *) - srelgot->contents) - + srelgot->reloc_count)); - ++ srelgot->reloc_count; - } - - value = sgot->output_offset + off; - } - } - - value += addend; - - if (r_type == R_MN10300_GOT32) - { - bfd_put_32 (input_bfd, value, hit_data); - return bfd_reloc_ok; - } - else if (r_type == R_MN10300_GOT24) - { - if ((long) value > 0x7fffff || (long) value < -0x800000) - return bfd_reloc_overflow; - - bfd_put_8 (input_bfd, value & 0xff, hit_data); - bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1); - bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2); - return bfd_reloc_ok; - } - else if (r_type == R_MN10300_GOT16) - { - if ((long) value > 0xffff || (long) value < -0x10000) - return bfd_reloc_overflow; - - bfd_put_16 (input_bfd, value, hit_data); - return bfd_reloc_ok; - } - /* Fall through. */ - - default: - return bfd_reloc_notsupported; - } -} - -/* Relocate an MN10300 ELF section. */ -static bfd_boolean -mn10300_elf_relocate_section (output_bfd, info, input_bfd, input_section, - contents, relocs, local_syms, local_sections) - bfd *output_bfd; - struct bfd_link_info *info; - bfd *input_bfd; - asection *input_section; - bfd_byte *contents; - Elf_Internal_Rela *relocs; - Elf_Internal_Sym *local_syms; - asection **local_sections; -{ - Elf_Internal_Shdr *symtab_hdr; - struct elf_link_hash_entry **sym_hashes; - Elf_Internal_Rela *rel, *relend; - - if (info->relocatable) - return TRUE; - - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - sym_hashes = elf_sym_hashes (input_bfd); - - rel = relocs; - relend = relocs + input_section->reloc_count; - for (; rel < relend; rel++) - { - int r_type; - reloc_howto_type *howto; - unsigned long r_symndx; - Elf_Internal_Sym *sym; - asection *sec; - struct elf32_mn10300_link_hash_entry *h; - bfd_vma relocation; - bfd_reloc_status_type r; - - r_symndx = ELF32_R_SYM (rel->r_info); - r_type = ELF32_R_TYPE (rel->r_info); - howto = elf_mn10300_howto_table + r_type; - - /* Just skip the vtable gc relocs. */ - if (r_type == R_MN10300_GNU_VTINHERIT - || r_type == R_MN10300_GNU_VTENTRY) - continue; - - 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); - } - else - { - bfd_boolean unresolved_reloc; - bfd_boolean warned; - struct elf_link_hash_entry *hh; - - RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, - r_symndx, symtab_hdr, sym_hashes, - hh, sec, relocation, - unresolved_reloc, warned); - - h = (struct elf32_mn10300_link_hash_entry *) hh; - - if ((h->root.root.type == bfd_link_hash_defined - || h->root.root.type == bfd_link_hash_defweak) - && ( r_type == R_MN10300_GOTPC32 - || r_type == R_MN10300_GOTPC16 - || (( r_type == R_MN10300_PLT32 - || r_type == R_MN10300_PLT16) - && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL - && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN - && h->root.plt.offset != (bfd_vma) -1) - || (( r_type == R_MN10300_GOT32 - || r_type == R_MN10300_GOT24 - || r_type == R_MN10300_GOT16) - && elf_hash_table (info)->dynamic_sections_created - && !SYMBOL_REFERENCES_LOCAL (info, hh)) - || (r_type == R_MN10300_32 - && !SYMBOL_REFERENCES_LOCAL (info, hh) - && ((input_section->flags & SEC_ALLOC) != 0 - /* DWARF will emit R_MN10300_32 relocations - in its sections against symbols defined - externally in shared libraries. We can't - do anything with them here. */ - || ((input_section->flags & SEC_DEBUGGING) != 0 - && h->root.def_dynamic))))) - /* 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 if (unresolved_reloc) - (*_bfd_error_handler) - (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), - input_bfd, - input_section, - (long) rel->r_offset, - howto->name, - h->root.root.root.string); - } - - r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd, - input_section, - contents, rel->r_offset, - relocation, rel->r_addend, - (struct elf_link_hash_entry *)h, - r_symndx, - info, sec, h == NULL); - - if (r != bfd_reloc_ok) - { - const char *name; - const char *msg = (const char *) 0; - - if (h != NULL) - name = h->root.root.root.string; - else - { - name = (bfd_elf_string_from_elf_section - (input_bfd, symtab_hdr->sh_link, sym->st_name)); - if (name == NULL || *name == '\0') - name = bfd_section_name (input_bfd, sec); - } - - switch (r) - { - case bfd_reloc_overflow: - if (! ((*info->callbacks->reloc_overflow) - (info, (h ? &h->root.root : NULL), name, - howto->name, (bfd_vma) 0, input_bfd, - input_section, rel->r_offset))) - return FALSE; - break; - - case bfd_reloc_undefined: - if (! ((*info->callbacks->undefined_symbol) - (info, name, input_bfd, input_section, - rel->r_offset, TRUE))) - return FALSE; - break; - - case bfd_reloc_outofrange: - msg = _("internal error: out of range error"); - goto common_error; - - case bfd_reloc_notsupported: - msg = _("internal error: unsupported relocation error"); - goto common_error; - - case bfd_reloc_dangerous: - msg = _("internal error: dangerous error"); - goto common_error; - - default: - msg = _("internal error: unknown error"); - /* fall through */ - - common_error: - if (!((*info->callbacks->warning) - (info, msg, name, input_bfd, input_section, - rel->r_offset))) - return FALSE; - break; - } - } - } - - return TRUE; -} - -/* Finish initializing one hash table entry. */ -static bfd_boolean -elf32_mn10300_finish_hash_table_entry (gen_entry, in_args) - struct bfd_hash_entry *gen_entry; - PTR in_args; -{ - struct elf32_mn10300_link_hash_entry *entry; - struct bfd_link_info *link_info = (struct bfd_link_info *)in_args; - unsigned int byte_count = 0; - - entry = (struct elf32_mn10300_link_hash_entry *) gen_entry; - - if (entry->root.root.type == bfd_link_hash_warning) - entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link; - - /* If we already know we want to convert "call" to "calls" for calls - to this symbol, then return now. */ - if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS) - return TRUE; - - /* If there are no named calls to this symbol, or there's nothing we - can move from the function itself into the "call" instruction, - then note that all "call" instructions should be converted into - "calls" instructions and return. If a symbol is available for - dynamic symbol resolution (overridable or overriding), avoid - custom calling conventions. */ - if (entry->direct_calls == 0 - || (entry->stack_size == 0 && entry->movm_args == 0) - || (elf_hash_table (link_info)->dynamic_sections_created - && ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL - && ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN)) - { - /* Make a note that we should convert "call" instructions to "calls" - instructions for calls to this symbol. */ - entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; - return TRUE; - } - - /* We may be able to move some instructions from the function itself into - the "call" instruction. Count how many bytes we might be able to - eliminate in the function itself. */ - - /* A movm instruction is two bytes. */ - if (entry->movm_args) - byte_count += 2; - - /* Count the insn to allocate stack space too. */ - if (entry->stack_size > 0) - { - if (entry->stack_size <= 128) - byte_count += 3; - else - byte_count += 4; - } - - /* If using "call" will result in larger code, then turn all - the associated "call" instructions into "calls" instructions. */ - if (byte_count < entry->direct_calls) - entry->flags |= MN10300_CONVERT_CALL_TO_CALLS; - - /* This routine never fails. */ - return TRUE; -} - -/* This function handles relaxing for the mn10300. - - There are quite a few relaxing opportunities available on the mn10300: - - * calls:32 -> calls:16 2 bytes - * call:32 -> call:16 2 bytes - - * call:32 -> calls:32 1 byte - * call:16 -> calls:16 1 byte - * These are done anytime using "calls" would result - in smaller code, or when necessary to preserve the - meaning of the program. - - * call:32 varies - * call:16 - * In some circumstances we can move instructions - from a function prologue into a "call" instruction. - This is only done if the resulting code is no larger - than the original code. - - * jmp:32 -> jmp:16 2 bytes - * jmp:16 -> bra:8 1 byte - - * If the previous instruction is a conditional branch - around the jump/bra, we may be able to reverse its condition - and change its target to the jump's target. The jump/bra - can then be deleted. 2 bytes - - * mov abs32 -> mov abs16 1 or 2 bytes - - * Most instructions which accept imm32 can relax to imm16 1 or 2 bytes - - Most instructions which accept imm16 can relax to imm8 1 or 2 bytes - - * Most instructions which accept d32 can relax to d16 1 or 2 bytes - - Most instructions which accept d16 can relax to d8 1 or 2 bytes - - We don't handle imm16->imm8 or d16->d8 as they're very rare - and somewhat more difficult to support. */ - -static bfd_boolean -mn10300_elf_relax_section (abfd, sec, link_info, again) - bfd *abfd; - asection *sec; - struct bfd_link_info *link_info; - bfd_boolean *again; -{ - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Rela *internal_relocs = NULL; - Elf_Internal_Rela *irel, *irelend; - bfd_byte *contents = NULL; - Elf_Internal_Sym *isymbuf = NULL; - struct elf32_mn10300_link_hash_table *hash_table; - asection *section = sec; - - /* Assume nothing changes. */ - *again = FALSE; - - /* We need a pointer to the mn10300 specific hash table. */ - hash_table = elf32_mn10300_hash_table (link_info); - - /* Initialize fields in each hash table entry the first time through. */ - if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0) - { - bfd *input_bfd; - - /* Iterate over all the input bfds. */ - for (input_bfd = link_info->input_bfds; - input_bfd != NULL; - input_bfd = input_bfd->link_next) - { - /* We're going to need all the symbols for each bfd. */ - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - if (symtab_hdr->sh_info != 0) - { - isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; - if (isymbuf == NULL) - isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, - symtab_hdr->sh_info, 0, - NULL, NULL, NULL); - if (isymbuf == NULL) - goto error_return; - } - - /* Iterate over each section in this bfd. */ - for (section = input_bfd->sections; - section != NULL; - section = section->next) - { - struct elf32_mn10300_link_hash_entry *hash; - Elf_Internal_Sym *sym; - asection *sym_sec = NULL; - const char *sym_name; - char *new_name; - - /* If there's nothing to do in this section, skip it. */ - if (! (((section->flags & SEC_RELOC) != 0 - && section->reloc_count != 0) - || (section->flags & SEC_CODE) != 0)) - continue; - - /* Get cached copy of section contents if it exists. */ - if (elf_section_data (section)->this_hdr.contents != NULL) - contents = elf_section_data (section)->this_hdr.contents; - else if (section->size != 0) - { - /* Go get them off disk. */ - if (!bfd_malloc_and_get_section (input_bfd, section, - &contents)) - goto error_return; - } - else - contents = NULL; - - /* If there aren't any relocs, then there's nothing to do. */ - if ((section->flags & SEC_RELOC) != 0 - && section->reloc_count != 0) - { - - /* Get a copy of the native relocations. */ - internal_relocs = (_bfd_elf_link_read_relocs - (input_bfd, section, (PTR) NULL, - (Elf_Internal_Rela *) NULL, - link_info->keep_memory)); - if (internal_relocs == NULL) - goto error_return; - - /* Now examine each relocation. */ - irel = internal_relocs; - irelend = irel + section->reloc_count; - for (; irel < irelend; irel++) - { - long r_type; - unsigned long r_index; - unsigned char code; - - r_type = ELF32_R_TYPE (irel->r_info); - r_index = ELF32_R_SYM (irel->r_info); - - if (r_type < 0 || r_type >= (int) R_MN10300_MAX) - goto error_return; - - /* We need the name and hash table entry of the target - symbol! */ - hash = NULL; - sym = NULL; - sym_sec = NULL; - - if (r_index < symtab_hdr->sh_info) - { - /* A local symbol. */ - Elf_Internal_Sym *isym; - struct elf_link_hash_table *elftab; - bfd_size_type amt; - - isym = isymbuf + r_index; - if (isym->st_shndx == SHN_UNDEF) - sym_sec = bfd_und_section_ptr; - else if (isym->st_shndx == SHN_ABS) - sym_sec = bfd_abs_section_ptr; - else if (isym->st_shndx == SHN_COMMON) - sym_sec = bfd_com_section_ptr; - else - sym_sec - = bfd_section_from_elf_index (input_bfd, - isym->st_shndx); - - sym_name - = bfd_elf_string_from_elf_section (input_bfd, - (symtab_hdr - ->sh_link), - isym->st_name); - - /* If it isn't a function, then we don't care - about it. */ - if (ELF_ST_TYPE (isym->st_info) != STT_FUNC) - continue; - - /* Tack on an ID so we can uniquely identify this - local symbol in the global hash table. */ - amt = strlen (sym_name) + 10; - new_name = bfd_malloc (amt); - if (new_name == 0) - goto error_return; - - sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); - sym_name = new_name; - - elftab = &hash_table->static_hash_table->root; - hash = ((struct elf32_mn10300_link_hash_entry *) - elf_link_hash_lookup (elftab, sym_name, - TRUE, TRUE, FALSE)); - free (new_name); - } - else - { - r_index -= symtab_hdr->sh_info; - hash = (struct elf32_mn10300_link_hash_entry *) - elf_sym_hashes (input_bfd)[r_index]; - } - - /* If this is not a "call" instruction, then we - should convert "call" instructions to "calls" - instructions. */ - code = bfd_get_8 (input_bfd, - contents + irel->r_offset - 1); - if (code != 0xdd && code != 0xcd) - hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; - - /* If this is a jump/call, then bump the - direct_calls counter. Else force "call" to - "calls" conversions. */ - if (r_type == R_MN10300_PCREL32 - || r_type == R_MN10300_PLT32 - || r_type == R_MN10300_PLT16 - || r_type == R_MN10300_PCREL16) - hash->direct_calls++; - else - hash->flags |= MN10300_CONVERT_CALL_TO_CALLS; - } - } - - /* Now look at the actual contents to get the stack size, - and a list of what registers were saved in the prologue - (ie movm_args). */ - if ((section->flags & SEC_CODE) != 0) - { - Elf_Internal_Sym *isym, *isymend; - unsigned int sec_shndx; - struct elf_link_hash_entry **hashes; - struct elf_link_hash_entry **end_hashes; - unsigned int symcount; - - sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, - section); - - symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) - - symtab_hdr->sh_info); - hashes = elf_sym_hashes (input_bfd); - end_hashes = hashes + symcount; - - /* Look at each function defined in this section and - update info for that function. */ - isymend = isymbuf + symtab_hdr->sh_info; - for (isym = isymbuf; isym < isymend; isym++) - { - if (isym->st_shndx == sec_shndx - && ELF_ST_TYPE (isym->st_info) == STT_FUNC) - { - struct elf_link_hash_table *elftab; - bfd_size_type amt; - struct elf_link_hash_entry **lhashes = hashes; - - /* Skip a local symbol if it aliases a - global one. */ - for (; lhashes < end_hashes; lhashes++) - { - hash = (struct elf32_mn10300_link_hash_entry *) *lhashes; - if ((hash->root.root.type == bfd_link_hash_defined - || hash->root.root.type == bfd_link_hash_defweak) - && hash->root.root.u.def.section == section - && hash->root.type == STT_FUNC - && hash->root.root.u.def.value == isym->st_value) - break; - } - if (lhashes != end_hashes) - continue; - - if (isym->st_shndx == SHN_UNDEF) - sym_sec = bfd_und_section_ptr; - else if (isym->st_shndx == SHN_ABS) - sym_sec = bfd_abs_section_ptr; - else if (isym->st_shndx == SHN_COMMON) - sym_sec = bfd_com_section_ptr; - else - sym_sec - = bfd_section_from_elf_index (input_bfd, - isym->st_shndx); - - sym_name = (bfd_elf_string_from_elf_section - (input_bfd, symtab_hdr->sh_link, - isym->st_name)); - - /* Tack on an ID so we can uniquely identify this - local symbol in the global hash table. */ - amt = strlen (sym_name) + 10; - new_name = bfd_malloc (amt); - if (new_name == 0) - goto error_return; - - sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); - sym_name = new_name; - - elftab = &hash_table->static_hash_table->root; - hash = ((struct elf32_mn10300_link_hash_entry *) - elf_link_hash_lookup (elftab, sym_name, - TRUE, TRUE, FALSE)); - free (new_name); - compute_function_info (input_bfd, hash, - isym->st_value, contents); - } - } - - for (; hashes < end_hashes; hashes++) - { - hash = (struct elf32_mn10300_link_hash_entry *) *hashes; - if ((hash->root.root.type == bfd_link_hash_defined - || hash->root.root.type == bfd_link_hash_defweak) - && hash->root.root.u.def.section == section - && hash->root.type == STT_FUNC) - compute_function_info (input_bfd, hash, - (hash)->root.root.u.def.value, - contents); - } - } - - /* Cache or free any memory we allocated for the relocs. */ - if (internal_relocs != NULL - && elf_section_data (section)->relocs != internal_relocs) - free (internal_relocs); - internal_relocs = NULL; - - /* Cache or free any memory we allocated for the contents. */ - if (contents != NULL - && elf_section_data (section)->this_hdr.contents != contents) - { - if (! link_info->keep_memory) - free (contents); - else - { - /* Cache the section contents for elf_link_input_bfd. */ - elf_section_data (section)->this_hdr.contents = contents; - } - } - contents = NULL; - } - - /* Cache or free any memory we allocated for the symbols. */ - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) - { - if (! link_info->keep_memory) - free (isymbuf); - else - { - /* Cache the symbols for elf_link_input_bfd. */ - symtab_hdr->contents = (unsigned char *) isymbuf; - } - } - isymbuf = NULL; - } - - /* Now iterate on each symbol in the hash table and perform - the final initialization steps on each. */ - elf32_mn10300_link_hash_traverse (hash_table, - elf32_mn10300_finish_hash_table_entry, - link_info); - elf32_mn10300_link_hash_traverse (hash_table->static_hash_table, - elf32_mn10300_finish_hash_table_entry, - link_info); - - /* All entries in the hash table are fully initialized. */ - hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED; - - /* Now that everything has been initialized, go through each - code section and delete any prologue insns which will be - redundant because their operations will be performed by - a "call" instruction. */ - for (input_bfd = link_info->input_bfds; - input_bfd != NULL; - input_bfd = input_bfd->link_next) - { - /* We're going to need all the local symbols for each bfd. */ - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - if (symtab_hdr->sh_info != 0) - { - isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; - if (isymbuf == NULL) - isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, - symtab_hdr->sh_info, 0, - NULL, NULL, NULL); - if (isymbuf == NULL) - goto error_return; - } - - /* Walk over each section in this bfd. */ - for (section = input_bfd->sections; - section != NULL; - section = section->next) - { - unsigned int sec_shndx; - Elf_Internal_Sym *isym, *isymend; - struct elf_link_hash_entry **hashes; - struct elf_link_hash_entry **end_hashes; - unsigned int symcount; - - /* Skip non-code sections and empty sections. */ - if ((section->flags & SEC_CODE) == 0 || section->size == 0) - continue; - - if (section->reloc_count != 0) - { - /* Get a copy of the native relocations. */ - internal_relocs = (_bfd_elf_link_read_relocs - (input_bfd, section, (PTR) NULL, - (Elf_Internal_Rela *) NULL, - link_info->keep_memory)); - if (internal_relocs == NULL) - goto error_return; - } - - /* Get cached copy of section contents if it exists. */ - if (elf_section_data (section)->this_hdr.contents != NULL) - contents = elf_section_data (section)->this_hdr.contents; - else - { - /* Go get them off disk. */ - if (!bfd_malloc_and_get_section (input_bfd, section, - &contents)) - goto error_return; - } - - sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd, - section); - - /* Now look for any function in this section which needs - insns deleted from its prologue. */ - isymend = isymbuf + symtab_hdr->sh_info; - for (isym = isymbuf; isym < isymend; isym++) - { - struct elf32_mn10300_link_hash_entry *sym_hash; - asection *sym_sec = NULL; - const char *sym_name; - char *new_name; - struct elf_link_hash_table *elftab; - bfd_size_type amt; - - if (isym->st_shndx != sec_shndx) - continue; - - if (isym->st_shndx == SHN_UNDEF) - sym_sec = bfd_und_section_ptr; - else if (isym->st_shndx == SHN_ABS) - sym_sec = bfd_abs_section_ptr; - else if (isym->st_shndx == SHN_COMMON) - sym_sec = bfd_com_section_ptr; - else - sym_sec - = bfd_section_from_elf_index (input_bfd, isym->st_shndx); - - sym_name - = bfd_elf_string_from_elf_section (input_bfd, - symtab_hdr->sh_link, - isym->st_name); - - /* Tack on an ID so we can uniquely identify this - local symbol in the global hash table. */ - amt = strlen (sym_name) + 10; - new_name = bfd_malloc (amt); - if (new_name == 0) - goto error_return; - sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); - sym_name = new_name; - - elftab = &hash_table->static_hash_table->root; - sym_hash = ((struct elf32_mn10300_link_hash_entry *) - elf_link_hash_lookup (elftab, sym_name, - FALSE, FALSE, FALSE)); - - free (new_name); - if (sym_hash == NULL) - continue; - - if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) - && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) - { - int bytes = 0; - - /* Note that we've changed things. */ - elf_section_data (section)->relocs = internal_relocs; - elf_section_data (section)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Count how many bytes we're going to delete. */ - if (sym_hash->movm_args) - bytes += 2; - - if (sym_hash->stack_size > 0) - { - if (sym_hash->stack_size <= 128) - bytes += 3; - else - bytes += 4; - } - - /* Note that we've deleted prologue bytes for this - function. */ - sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; - - /* Actually delete the bytes. */ - if (!mn10300_elf_relax_delete_bytes (input_bfd, - section, - isym->st_value, - bytes)) - goto error_return; - - /* Something changed. Not strictly necessary, but - may lead to more relaxing opportunities. */ - *again = TRUE; - } - } - - /* Look for any global functions in this section which - need insns deleted from their prologues. */ - symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) - - symtab_hdr->sh_info); - hashes = elf_sym_hashes (input_bfd); - end_hashes = hashes + symcount; - for (; hashes < end_hashes; hashes++) - { - struct elf32_mn10300_link_hash_entry *sym_hash; - - sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes; - if ((sym_hash->root.root.type == bfd_link_hash_defined - || sym_hash->root.root.type == bfd_link_hash_defweak) - && sym_hash->root.root.u.def.section == section - && ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS) - && ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES)) - { - int bytes = 0; - bfd_vma symval; - - /* Note that we've changed things. */ - elf_section_data (section)->relocs = internal_relocs; - elf_section_data (section)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Count how many bytes we're going to delete. */ - if (sym_hash->movm_args) - bytes += 2; - - if (sym_hash->stack_size > 0) - { - if (sym_hash->stack_size <= 128) - bytes += 3; - else - bytes += 4; - } - - /* Note that we've deleted prologue bytes for this - function. */ - sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES; - - /* Actually delete the bytes. */ - symval = sym_hash->root.root.u.def.value; - if (!mn10300_elf_relax_delete_bytes (input_bfd, - section, - symval, - bytes)) - goto error_return; - - /* Something changed. Not strictly necessary, but - may lead to more relaxing opportunities. */ - *again = TRUE; - } - } - - /* Cache or free any memory we allocated for the relocs. */ - if (internal_relocs != NULL - && elf_section_data (section)->relocs != internal_relocs) - free (internal_relocs); - internal_relocs = NULL; - - /* Cache or free any memory we allocated for the contents. */ - if (contents != NULL - && elf_section_data (section)->this_hdr.contents != contents) - { - if (! link_info->keep_memory) - free (contents); - else - { - /* Cache the section contents for elf_link_input_bfd. */ - elf_section_data (section)->this_hdr.contents = contents; - } - } - contents = NULL; - } - - /* Cache or free any memory we allocated for the symbols. */ - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) - { - if (! link_info->keep_memory) - free (isymbuf); - else - { - /* Cache the symbols for elf_link_input_bfd. */ - symtab_hdr->contents = (unsigned char *) isymbuf; - } - } - isymbuf = NULL; - } - } - - /* (Re)initialize for the basic instruction shortening/relaxing pass. */ - contents = NULL; - internal_relocs = NULL; - isymbuf = NULL; - /* For error_return. */ - section = sec; - - /* We don't have to do anything for a relocatable link, if - this section does not have relocs, or if this is not a - code section. */ - if (link_info->relocatable - || (sec->flags & SEC_RELOC) == 0 - || sec->reloc_count == 0 - || (sec->flags & SEC_CODE) == 0) - return TRUE; - - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - - /* Get a copy of the native relocations. */ - internal_relocs = (_bfd_elf_link_read_relocs - (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, - link_info->keep_memory)); - if (internal_relocs == NULL) - goto error_return; - - /* Walk through them looking for relaxing opportunities. */ - irelend = internal_relocs + sec->reloc_count; - for (irel = internal_relocs; irel < irelend; irel++) - { - bfd_vma symval; - struct elf32_mn10300_link_hash_entry *h = NULL; - - /* If this isn't something that can be relaxed, then ignore - this reloc. */ - if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE - || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8 - || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX) - continue; - - /* Get the section contents if we haven't done so already. */ - if (contents == NULL) - { - /* Get cached copy if it exists. */ - if (elf_section_data (sec)->this_hdr.contents != NULL) - contents = elf_section_data (sec)->this_hdr.contents; - else - { - /* Go get them off disk. */ - if (!bfd_malloc_and_get_section (abfd, sec, &contents)) - goto error_return; - } - } - - /* Read this BFD's symbols if we haven't done so already. */ - if (isymbuf == NULL && symtab_hdr->sh_info != 0) - { - isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; - if (isymbuf == NULL) - isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, - symtab_hdr->sh_info, 0, - NULL, NULL, NULL); - if (isymbuf == NULL) - goto error_return; - } - - /* Get the value of the symbol referred to by the reloc. */ - if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) - { - Elf_Internal_Sym *isym; - asection *sym_sec = NULL; - const char *sym_name; - char *new_name; - bfd_vma saved_addend; - - /* A local symbol. */ - isym = isymbuf + ELF32_R_SYM (irel->r_info); - if (isym->st_shndx == SHN_UNDEF) - sym_sec = bfd_und_section_ptr; - else if (isym->st_shndx == SHN_ABS) - sym_sec = bfd_abs_section_ptr; - else if (isym->st_shndx == SHN_COMMON) - sym_sec = bfd_com_section_ptr; - else - sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); - - sym_name = bfd_elf_string_from_elf_section (abfd, - symtab_hdr->sh_link, - isym->st_name); - - if ((sym_sec->flags & SEC_MERGE) - && ELF_ST_TYPE (isym->st_info) == STT_SECTION - && sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE) - { - saved_addend = irel->r_addend; - symval = _bfd_elf_rela_local_sym (abfd, isym, &sym_sec, irel); - symval += irel->r_addend; - irel->r_addend = saved_addend; - } - else - { - symval = (isym->st_value - + sym_sec->output_section->vma - + sym_sec->output_offset); - } - /* Tack on an ID so we can uniquely identify this - local symbol in the global hash table. */ - new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10); - if (new_name == 0) - goto error_return; - sprintf (new_name, "%s_%08x", sym_name, sym_sec->id); - sym_name = new_name; - - h = (struct elf32_mn10300_link_hash_entry *) - elf_link_hash_lookup (&hash_table->static_hash_table->root, - sym_name, FALSE, FALSE, FALSE); - free (new_name); - } - else - { - unsigned long indx; - - /* An external symbol. */ - indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; - h = (struct elf32_mn10300_link_hash_entry *) - (elf_sym_hashes (abfd)[indx]); - BFD_ASSERT (h != NULL); - if (h->root.root.type != bfd_link_hash_defined - && h->root.root.type != bfd_link_hash_defweak) - { - /* This appears to be a reference to an undefined - symbol. Just ignore it--it will be caught by the - regular reloc processing. */ - continue; - } - - symval = (h->root.root.u.def.value - + h->root.root.u.def.section->output_section->vma - + h->root.root.u.def.section->output_offset); - } - - /* For simplicity of coding, we are going to modify the section - contents, the section relocs, and the BFD symbol table. We - must tell the rest of the code not to free up this - information. It would be possible to instead create a table - of changes which have to be made, as is done in coff-mips.c; - that would be more work, but would require less memory when - the linker is run. */ - - /* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative - branch/call, also deal with "call" -> "calls" conversions and - insertion of prologue data into "call" instructions. */ - if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32 - || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32) - { - bfd_vma value = symval; - - if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32 - && h != NULL - && ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL - && ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN - && h->root.plt.offset != (bfd_vma) -1) - { - asection * splt; - - splt = bfd_get_section_by_name (elf_hash_table (link_info) - ->dynobj, ".plt"); - - value = ((splt->output_section->vma - + splt->output_offset - + h->root.plt.offset) - - (sec->output_section->vma - + sec->output_offset - + irel->r_offset)); - } - - /* If we've got a "call" instruction that needs to be turned - into a "calls" instruction, do so now. It saves a byte. */ - if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) - { - unsigned char code; - - /* Get the opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - - /* Make sure we're working with a "call" instruction! */ - if (code == 0xdd) - { - /* Note that we've changed the relocs, section contents, - etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the opcode. */ - bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1); - bfd_put_8 (abfd, 0xff, contents + irel->r_offset); - - /* Fix irel->r_offset and irel->r_addend. */ - irel->r_offset += 1; - irel->r_addend += 1; - - /* Delete one byte of data. */ - if (!mn10300_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 3, 1)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - } - else if (h) - { - /* We've got a "call" instruction which needs some data - from target function filled in. */ - unsigned char code; - - /* Get the opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - - /* Insert data from the target function into the "call" - instruction if needed. */ - if (code == 0xdd) - { - bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4); - bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, - contents + irel->r_offset + 5); - } - } - - /* Deal with pc-relative gunk. */ - value -= (sec->output_section->vma + sec->output_offset); - value -= irel->r_offset; - value += irel->r_addend; - - /* See if the value will fit in 16 bits, note the high value is - 0x7fff + 2 as the target will be two bytes closer if we are - able to relax. */ - if ((long) value < 0x8001 && (long) value > -0x8000) - { - unsigned char code; - - /* Get the opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - - if (code != 0xdc && code != 0xdd && code != 0xff) - continue; - - /* Note that we've changed the relocs, section contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the opcode. */ - if (code == 0xdc) - bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1); - else if (code == 0xdd) - bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1); - else if (code == 0xff) - bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_PLT32) - ? R_MN10300_PLT16 : - R_MN10300_PCREL16); - - /* Delete two bytes of data. */ - if (!mn10300_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 1, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - } - - /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative - branch. */ - if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16) - { - bfd_vma value = symval; - - /* If we've got a "call" instruction that needs to be turned - into a "calls" instruction, do so now. It saves a byte. */ - if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS)) - { - unsigned char code; - - /* Get the opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - - /* Make sure we're working with a "call" instruction! */ - if (code == 0xcd) - { - /* Note that we've changed the relocs, section contents, - etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the opcode. */ - bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1); - bfd_put_8 (abfd, 0xff, contents + irel->r_offset); - - /* Fix irel->r_offset and irel->r_addend. */ - irel->r_offset += 1; - irel->r_addend += 1; - - /* Delete one byte of data. */ - if (!mn10300_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 1, 1)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - } - else if (h) - { - unsigned char code; - - /* Get the opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - - /* Insert data from the target function into the "call" - instruction if needed. */ - if (code == 0xcd) - { - bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2); - bfd_put_8 (abfd, h->stack_size + h->movm_stack_size, - contents + irel->r_offset + 3); - } - } - - /* Deal with pc-relative gunk. */ - value -= (sec->output_section->vma + sec->output_offset); - value -= irel->r_offset; - value += irel->r_addend; - - /* See if the value will fit in 8 bits, note the high value is - 0x7f + 1 as the target will be one bytes closer if we are - able to relax. */ - if ((long) value < 0x80 && (long) value > -0x80) - { - unsigned char code; - - /* Get the opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - - if (code != 0xcc) - continue; - - /* Note that we've changed the relocs, section contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the opcode. */ - bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1); - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_MN10300_PCREL8); - - /* Delete one byte of data. */ - if (!mn10300_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 1, 1)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - } - - /* Try to eliminate an unconditional 8 bit pc-relative branch - which immediately follows a conditional 8 bit pc-relative - branch around the unconditional branch. - - original: new: - bCC lab1 bCC' lab2 - bra lab2 - lab1: lab1: - - This happens when the bCC can't reach lab2 at assembly time, - but due to other relaxations it can reach at link time. */ - if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8) - { - Elf_Internal_Rela *nrel; - bfd_vma value = symval; - unsigned char code; - - /* Deal with pc-relative gunk. */ - value -= (sec->output_section->vma + sec->output_offset); - value -= irel->r_offset; - value += irel->r_addend; - - /* Do nothing if this reloc is the last byte in the section. */ - if (irel->r_offset == sec->size) - continue; - - /* See if the next instruction is an unconditional pc-relative - branch, more often than not this test will fail, so we - test it first to speed things up. */ - code = bfd_get_8 (abfd, contents + irel->r_offset + 1); - if (code != 0xca) - continue; - - /* Also make sure the next relocation applies to the next - instruction and that it's a pc-relative 8 bit branch. */ - nrel = irel + 1; - if (nrel == irelend - || irel->r_offset + 2 != nrel->r_offset - || ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8) - continue; - - /* Make sure our destination immediately follows the - unconditional branch. */ - if (symval != (sec->output_section->vma + sec->output_offset - + irel->r_offset + 3)) - continue; - - /* Now make sure we are a conditional branch. This may not - be necessary, but why take the chance. - - Note these checks assume that R_MN10300_PCREL8 relocs - only occur on bCC and bCCx insns. If they occured - elsewhere, we'd need to know the start of this insn - for this check to be accurate. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - if (code != 0xc0 && code != 0xc1 && code != 0xc2 - && code != 0xc3 && code != 0xc4 && code != 0xc5 - && code != 0xc6 && code != 0xc7 && code != 0xc8 - && code != 0xc9 && code != 0xe8 && code != 0xe9 - && code != 0xea && code != 0xeb) - continue; - - /* We also have to be sure there is no symbol/label - at the unconditional branch. */ - if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf, - irel->r_offset + 1)) - continue; - - /* Note that we've changed the relocs, section contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Reverse the condition of the first branch. */ - switch (code) - { - case 0xc8: - code = 0xc9; - break; - case 0xc9: - code = 0xc8; - break; - case 0xc0: - code = 0xc2; - break; - case 0xc2: - code = 0xc0; - break; - case 0xc3: - code = 0xc1; - break; - case 0xc1: - code = 0xc3; - break; - case 0xc4: - code = 0xc6; - break; - case 0xc6: - code = 0xc4; - break; - case 0xc7: - code = 0xc5; - break; - case 0xc5: - code = 0xc7; - break; - case 0xe8: - code = 0xe9; - break; - case 0x9d: - code = 0xe8; - break; - case 0xea: - code = 0xeb; - break; - case 0xeb: - code = 0xea; - break; - } - bfd_put_8 (abfd, code, contents + irel->r_offset - 1); - - /* Set the reloc type and symbol for the first branch - from the second branch. */ - irel->r_info = nrel->r_info; - - /* Make the reloc for the second branch a null reloc. */ - nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info), - R_MN10300_NONE); - - /* Delete two bytes of data. */ - if (!mn10300_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 1, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - } - - /* Try to turn a 24 immediate, displacement or absolute address - into a 8 immediate, displacement or absolute address. */ - if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24) - { - bfd_vma value = symval; - value += irel->r_addend; - - /* See if the value will fit in 8 bits. */ - if ((long) value < 0x7f && (long) value > -0x80) - { - unsigned char code; - - /* AM33 insns which have 24 operands are 6 bytes long and - will have 0xfd as the first byte. */ - - /* Get the first opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 3); - - if (code == 0xfd) - { - /* Get the second opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 2); - - /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit - equivalent instructions exists. */ - if (code != 0x6b && code != 0x7b - && code != 0x8b && code != 0x9b - && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 - || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b - || (code & 0x0f) == 0x0e)) - { - /* Not safe if the high bit is on as relaxing may - move the value out of high mem and thus not fit - in a signed 8bit value. This is currently over - conservative. */ - if ((value & 0x80) == 0) - { - /* Note that we've changed the relocation contents, - etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the opcode. */ - bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3); - bfd_put_8 (abfd, code, contents + irel->r_offset - 2); - - /* Fix the relocation's type. */ - irel->r_info = - ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - R_MN10300_8); - - /* Delete two bytes of data. */ - if (!mn10300_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 1, 2)) - goto error_return; - - /* That will change things, so, we should relax - again. Note that this is not required, and it - may be slow. */ - *again = TRUE; - break; - } - } - } - } - } - - /* Try to turn a 32bit immediate, displacement or absolute address - into a 16bit immediate, displacement or absolute address. */ - if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32 - || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32 - || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32 - || ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32) - { - bfd_vma value = symval; - - if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32) - { - asection * sgot; - - sgot = bfd_get_section_by_name (elf_hash_table (link_info) - ->dynobj, ".got"); - - if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32) - { - value = sgot->output_offset; - - if (h) - value += h->root.got.offset; - else - value += (elf_local_got_offsets - (abfd)[ELF32_R_SYM (irel->r_info)]); - } - else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32) - value -= sgot->output_section->vma; - else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32) - value = (sgot->output_section->vma - - (sec->output_section->vma - + sec->output_offset - + irel->r_offset)); - else - abort (); - } - - value += irel->r_addend; - - /* See if the value will fit in 24 bits. - We allow any 16bit match here. We prune those we can't - handle below. */ - if ((long) value < 0x7fffff && (long) value > -0x800000) - { - unsigned char code; - - /* AM33 insns which have 32bit operands are 7 bytes long and - will have 0xfe as the first byte. */ - - /* Get the first opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 3); - - if (code == 0xfe) - { - /* Get the second opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 2); - - /* All the am33 32 -> 24 relaxing possibilities. */ - /* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit - equivalent instructions exists. */ - if (code != 0x6b && code != 0x7b - && code != 0x8b && code != 0x9b - && (ELF32_R_TYPE (irel->r_info) - != (int) R_MN10300_GOTPC32) - && ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08 - || (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b - || (code & 0x0f) == 0x0e)) - { - /* Not safe if the high bit is on as relaxing may - move the value out of high mem and thus not fit - in a signed 16bit value. This is currently over - conservative. */ - if ((value & 0x8000) == 0) - { - /* Note that we've changed the relocation contents, - etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the opcode. */ - bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3); - bfd_put_8 (abfd, code, contents + irel->r_offset - 2); - - /* Fix the relocation's type. */ - irel->r_info = - ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOTOFF32) - ? R_MN10300_GOTOFF24 - : (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOT32) - ? R_MN10300_GOT24 : - R_MN10300_24); - - /* Delete one byte of data. */ - if (!mn10300_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 3, 1)) - goto error_return; - - /* That will change things, so, we should relax - again. Note that this is not required, and it - may be slow. */ - *again = TRUE; - break; - } - } - } - } - - /* See if the value will fit in 16 bits. - We allow any 16bit match here. We prune those we can't - handle below. */ - if ((long) value < 0x7fff && (long) value > -0x8000) - { - unsigned char code; - - /* Most insns which have 32bit operands are 6 bytes long; - exceptions are pcrel insns and bit insns. - - We handle pcrel insns above. We don't bother trying - to handle the bit insns here. - - The first byte of the remaining insns will be 0xfc. */ - - /* Get the first opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 2); - - if (code != 0xfc) - continue; - - /* Get the second opcode. */ - code = bfd_get_8 (abfd, contents + irel->r_offset - 1); - - if ((code & 0xf0) < 0x80) - switch (code & 0xf0) - { - /* mov (d32,am),dn -> mov (d32,am),dn - mov dm,(d32,am) -> mov dn,(d32,am) - mov (d32,am),an -> mov (d32,am),an - mov dm,(d32,am) -> mov dn,(d32,am) - movbu (d32,am),dn -> movbu (d32,am),dn - movbu dm,(d32,am) -> movbu dn,(d32,am) - movhu (d32,am),dn -> movhu (d32,am),dn - movhu dm,(d32,am) -> movhu dn,(d32,am) */ - case 0x00: - case 0x10: - case 0x20: - case 0x30: - case 0x40: - case 0x50: - case 0x60: - case 0x70: - /* Not safe if the high bit is on as relaxing may - move the value out of high mem and thus not fit - in a signed 16bit value. */ - if (code == 0xcc - && (value & 0x8000)) - continue; - - /* Note that we've changed the relocation contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the opcode. */ - bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); - bfd_put_8 (abfd, code, contents + irel->r_offset - 1); - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOTOFF32) - ? R_MN10300_GOTOFF16 - : (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOT32) - ? R_MN10300_GOT16 - : (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOTPC32) - ? R_MN10300_GOTPC16 : - R_MN10300_16); - - /* Delete two bytes of data. */ - if (!mn10300_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 2, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - break; - } - else if ((code & 0xf0) == 0x80 - || (code & 0xf0) == 0x90) - switch (code & 0xf3) - { - /* mov dn,(abs32) -> mov dn,(abs16) - movbu dn,(abs32) -> movbu dn,(abs16) - movhu dn,(abs32) -> movhu dn,(abs16) */ - case 0x81: - case 0x82: - case 0x83: - /* Note that we've changed the relocation contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - if ((code & 0xf3) == 0x81) - code = 0x01 + (code & 0x0c); - else if ((code & 0xf3) == 0x82) - code = 0x02 + (code & 0x0c); - else if ((code & 0xf3) == 0x83) - code = 0x03 + (code & 0x0c); - else - abort (); - - /* Fix the opcode. */ - bfd_put_8 (abfd, code, contents + irel->r_offset - 2); - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOTOFF32) - ? R_MN10300_GOTOFF16 - : (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOT32) - ? R_MN10300_GOT16 - : (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOTPC32) - ? R_MN10300_GOTPC16 : - R_MN10300_16); - - /* The opcode got shorter too, so we have to fix the - addend and offset too! */ - irel->r_offset -= 1; - - /* Delete three bytes of data. */ - if (!mn10300_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 1, 3)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - break; - - /* mov am,(abs32) -> mov am,(abs16) - mov am,(d32,sp) -> mov am,(d16,sp) - mov dm,(d32,sp) -> mov dm,(d32,sp) - movbu dm,(d32,sp) -> movbu dm,(d32,sp) - movhu dm,(d32,sp) -> movhu dm,(d32,sp) */ - case 0x80: - case 0x90: - case 0x91: - case 0x92: - case 0x93: - /* sp-based offsets are zero-extended. */ - if (code >= 0x90 && code <= 0x93 - && (long)value < 0) - continue; - - /* Note that we've changed the relocation contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the opcode. */ - bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); - bfd_put_8 (abfd, code, contents + irel->r_offset - 1); - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOTOFF32) - ? R_MN10300_GOTOFF16 - : (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOT32) - ? R_MN10300_GOT16 - : (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOTPC32) - ? R_MN10300_GOTPC16 : - R_MN10300_16); - - /* Delete two bytes of data. */ - if (!mn10300_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 2, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - break; - } - else if ((code & 0xf0) < 0xf0) - switch (code & 0xfc) - { - /* mov imm32,dn -> mov imm16,dn - mov imm32,an -> mov imm16,an - mov (abs32),dn -> mov (abs16),dn - movbu (abs32),dn -> movbu (abs16),dn - movhu (abs32),dn -> movhu (abs16),dn */ - case 0xcc: - case 0xdc: - case 0xa4: - case 0xa8: - case 0xac: - /* Not safe if the high bit is on as relaxing may - move the value out of high mem and thus not fit - in a signed 16bit value. */ - if (code == 0xcc - && (value & 0x8000)) - continue; - - /* mov imm16, an zero-extends the immediate. */ - if (code == 0xdc - && (long)value < 0) - continue; - - /* Note that we've changed the relocation contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - if ((code & 0xfc) == 0xcc) - code = 0x2c + (code & 0x03); - else if ((code & 0xfc) == 0xdc) - code = 0x24 + (code & 0x03); - else if ((code & 0xfc) == 0xa4) - code = 0x30 + (code & 0x03); - else if ((code & 0xfc) == 0xa8) - code = 0x34 + (code & 0x03); - else if ((code & 0xfc) == 0xac) - code = 0x38 + (code & 0x03); - else - abort (); - - /* Fix the opcode. */ - bfd_put_8 (abfd, code, contents + irel->r_offset - 2); - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOTOFF32) - ? R_MN10300_GOTOFF16 - : (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOT32) - ? R_MN10300_GOT16 - : (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOTPC32) - ? R_MN10300_GOTPC16 : - R_MN10300_16); - - /* The opcode got shorter too, so we have to fix the - addend and offset too! */ - irel->r_offset -= 1; - - /* Delete three bytes of data. */ - if (!mn10300_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 1, 3)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - break; - - /* mov (abs32),an -> mov (abs16),an - mov (d32,sp),an -> mov (d16,sp),an - mov (d32,sp),dn -> mov (d16,sp),dn - movbu (d32,sp),dn -> movbu (d16,sp),dn - movhu (d32,sp),dn -> movhu (d16,sp),dn - add imm32,dn -> add imm16,dn - cmp imm32,dn -> cmp imm16,dn - add imm32,an -> add imm16,an - cmp imm32,an -> cmp imm16,an - and imm32,dn -> and imm16,dn - or imm32,dn -> or imm16,dn - xor imm32,dn -> xor imm16,dn - btst imm32,dn -> btst imm16,dn */ - - case 0xa0: - case 0xb0: - case 0xb1: - case 0xb2: - case 0xb3: - case 0xc0: - case 0xc8: - - case 0xd0: - case 0xd8: - case 0xe0: - case 0xe1: - case 0xe2: - case 0xe3: - /* cmp imm16, an zero-extends the immediate. */ - if (code == 0xdc - && (long)value < 0) - continue; - - /* So do sp-based offsets. */ - if (code >= 0xb0 && code <= 0xb3 - && (long)value < 0) - continue; - - /* Note that we've changed the relocation contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the opcode. */ - bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); - bfd_put_8 (abfd, code, contents + irel->r_offset - 1); - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOTOFF32) - ? R_MN10300_GOTOFF16 - : (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOT32) - ? R_MN10300_GOT16 - : (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOTPC32) - ? R_MN10300_GOTPC16 : - R_MN10300_16); - - /* Delete two bytes of data. */ - if (!mn10300_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 2, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - break; - } - else if (code == 0xfe) - { - /* add imm32,sp -> add imm16,sp */ - - /* Note that we've changed the relocation contents, etc. */ - elf_section_data (sec)->relocs = internal_relocs; - elf_section_data (sec)->this_hdr.contents = contents; - symtab_hdr->contents = (unsigned char *) isymbuf; - - /* Fix the opcode. */ - bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2); - bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1); - - /* Fix the relocation's type. */ - irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), - (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOT32) - ? R_MN10300_GOT16 - : (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOTOFF32) - ? R_MN10300_GOTOFF16 - : (ELF32_R_TYPE (irel->r_info) - == (int) R_MN10300_GOTPC32) - ? R_MN10300_GOTPC16 : - R_MN10300_16); - - /* Delete two bytes of data. */ - if (!mn10300_elf_relax_delete_bytes (abfd, sec, - irel->r_offset + 2, 2)) - goto error_return; - - /* That will change things, so, we should relax again. - Note that this is not required, and it may be slow. */ - *again = TRUE; - break; - } - } - } - } - - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) - { - if (! link_info->keep_memory) - free (isymbuf); - else - { - /* Cache the symbols for elf_link_input_bfd. */ - symtab_hdr->contents = (unsigned char *) isymbuf; - } - } - - if (contents != NULL - && elf_section_data (sec)->this_hdr.contents != contents) - { - if (! link_info->keep_memory) - free (contents); - else - { - /* Cache the section contents for elf_link_input_bfd. */ - elf_section_data (sec)->this_hdr.contents = contents; - } - } - - if (internal_relocs != NULL - && elf_section_data (sec)->relocs != internal_relocs) - free (internal_relocs); - - return TRUE; - - error_return: - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (contents != NULL - && elf_section_data (section)->this_hdr.contents != contents) - free (contents); - if (internal_relocs != NULL - && elf_section_data (section)->relocs != internal_relocs) - free (internal_relocs); - - return FALSE; -} - -/* Compute the stack size and movm arguments for the function - referred to by HASH at address ADDR in section with - contents CONTENTS, store the information in the hash table. */ -static void -compute_function_info (abfd, hash, addr, contents) - bfd *abfd; - struct elf32_mn10300_link_hash_entry *hash; - bfd_vma addr; - unsigned char *contents; -{ - unsigned char byte1, byte2; - /* We only care about a very small subset of the possible prologue - sequences here. Basically we look for: - - movm [d2,d3,a2,a3],sp (optional) - add <size>,sp (optional, and only for sizes which fit in an unsigned - 8 bit number) - - If we find anything else, we quit. */ - - /* Look for movm [regs],sp */ - byte1 = bfd_get_8 (abfd, contents + addr); - byte2 = bfd_get_8 (abfd, contents + addr + 1); - - if (byte1 == 0xcf) - { - hash->movm_args = byte2; - addr += 2; - byte1 = bfd_get_8 (abfd, contents + addr); - byte2 = bfd_get_8 (abfd, contents + addr + 1); - } - - /* Now figure out how much stack space will be allocated by the movm - instruction. We need this kept separate from the function's normal - stack space. */ - if (hash->movm_args) - { - /* Space for d2. */ - if (hash->movm_args & 0x80) - hash->movm_stack_size += 4; - - /* Space for d3. */ - if (hash->movm_args & 0x40) - hash->movm_stack_size += 4; - - /* Space for a2. */ - if (hash->movm_args & 0x20) - hash->movm_stack_size += 4; - - /* Space for a3. */ - if (hash->movm_args & 0x10) - hash->movm_stack_size += 4; - - /* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */ - if (hash->movm_args & 0x08) - hash->movm_stack_size += 8 * 4; - - if (bfd_get_mach (abfd) == bfd_mach_am33 - || bfd_get_mach (abfd) == bfd_mach_am33_2) - { - /* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */ - if (hash->movm_args & 0x1) - hash->movm_stack_size += 6 * 4; - - /* exreg1 space. e4, e5, e6, e7 */ - if (hash->movm_args & 0x2) - hash->movm_stack_size += 4 * 4; - - /* exreg0 space. e2, e3 */ - if (hash->movm_args & 0x4) - hash->movm_stack_size += 2 * 4; - } - } - - /* Now look for the two stack adjustment variants. */ - if (byte1 == 0xf8 && byte2 == 0xfe) - { - int temp = bfd_get_8 (abfd, contents + addr + 2); - temp = ((temp & 0xff) ^ (~0x7f)) + 0x80; - - hash->stack_size = -temp; - } - else if (byte1 == 0xfa && byte2 == 0xfe) - { - int temp = bfd_get_16 (abfd, contents + addr + 2); - temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000; - temp = -temp; - - if (temp < 255) - hash->stack_size = temp; - } - - /* If the total stack to be allocated by the call instruction is more - than 255 bytes, then we can't remove the stack adjustment by using - "call" (we might still be able to remove the "movm" instruction. */ - if (hash->stack_size + hash->movm_stack_size > 255) - hash->stack_size = 0; - - return; -} - -/* Delete some bytes from a section while relaxing. */ - -static bfd_boolean -mn10300_elf_relax_delete_bytes (abfd, sec, addr, count) - bfd *abfd; - asection *sec; - bfd_vma addr; - int count; -{ - Elf_Internal_Shdr *symtab_hdr; - unsigned int sec_shndx; - bfd_byte *contents; - Elf_Internal_Rela *irel, *irelend; - Elf_Internal_Rela *irelalign; - bfd_vma toaddr; - Elf_Internal_Sym *isym, *isymend; - struct elf_link_hash_entry **sym_hashes; - struct elf_link_hash_entry **end_hashes; - unsigned int symcount; - - sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); - - contents = elf_section_data (sec)->this_hdr.contents; - - /* The deletion must stop at the next ALIGN reloc for an aligment - power larger than the number of bytes we are deleting. */ - - irelalign = NULL; - toaddr = sec->size; - - irel = elf_section_data (sec)->relocs; - irelend = irel + sec->reloc_count; - - /* Actually delete the bytes. */ - memmove (contents + addr, contents + addr + count, - (size_t) (toaddr - addr - count)); - sec->size -= count; - - /* Adjust all the relocs. */ - for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) - { - /* Get the new reloc address. */ - if ((irel->r_offset > addr - && irel->r_offset < toaddr)) - irel->r_offset -= count; - } - - /* Adjust the local symbols defined in this section. */ - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - isym = (Elf_Internal_Sym *) symtab_hdr->contents; - for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) - { - if (isym->st_shndx == sec_shndx - && isym->st_value > addr - && isym->st_value < toaddr) - isym->st_value -= count; - } - - /* Now adjust the global symbols defined in this section. */ - symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) - - symtab_hdr->sh_info); - sym_hashes = elf_sym_hashes (abfd); - end_hashes = sym_hashes + symcount; - for (; sym_hashes < end_hashes; sym_hashes++) - { - struct elf_link_hash_entry *sym_hash = *sym_hashes; - if ((sym_hash->root.type == bfd_link_hash_defined - || sym_hash->root.type == bfd_link_hash_defweak) - && sym_hash->root.u.def.section == sec - && sym_hash->root.u.def.value > addr - && sym_hash->root.u.def.value < toaddr) - { - sym_hash->root.u.def.value -= count; - } - } - - return TRUE; -} - -/* Return TRUE if a symbol exists at the given address, else return - FALSE. */ -static bfd_boolean -mn10300_elf_symbol_address_p (abfd, sec, isym, addr) - bfd *abfd; - asection *sec; - Elf_Internal_Sym *isym; - bfd_vma addr; -{ - Elf_Internal_Shdr *symtab_hdr; - unsigned int sec_shndx; - Elf_Internal_Sym *isymend; - struct elf_link_hash_entry **sym_hashes; - struct elf_link_hash_entry **end_hashes; - unsigned int symcount; - - sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); - - /* Examine all the symbols. */ - symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) - { - if (isym->st_shndx == sec_shndx - && isym->st_value == addr) - return TRUE; - } - - symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) - - symtab_hdr->sh_info); - sym_hashes = elf_sym_hashes (abfd); - end_hashes = sym_hashes + symcount; - for (; sym_hashes < end_hashes; sym_hashes++) - { - struct elf_link_hash_entry *sym_hash = *sym_hashes; - if ((sym_hash->root.type == bfd_link_hash_defined - || sym_hash->root.type == bfd_link_hash_defweak) - && sym_hash->root.u.def.section == sec - && sym_hash->root.u.def.value == addr) - return TRUE; - } - - return FALSE; -} - -/* This is a version of bfd_generic_get_relocated_section_contents - which uses mn10300_elf_relocate_section. */ - -static bfd_byte * -mn10300_elf_get_relocated_section_contents (output_bfd, link_info, link_order, - data, relocatable, symbols) - bfd *output_bfd; - struct bfd_link_info *link_info; - struct bfd_link_order *link_order; - bfd_byte *data; - bfd_boolean relocatable; - asymbol **symbols; -{ - Elf_Internal_Shdr *symtab_hdr; - asection *input_section = link_order->u.indirect.section; - bfd *input_bfd = input_section->owner; - asection **sections = NULL; - Elf_Internal_Rela *internal_relocs = NULL; - Elf_Internal_Sym *isymbuf = NULL; - - /* We only need to handle the case of relaxing, or of having a - particular set of section contents, specially. */ - if (relocatable - || elf_section_data (input_section)->this_hdr.contents == NULL) - return bfd_generic_get_relocated_section_contents (output_bfd, link_info, - link_order, data, - relocatable, - symbols); - - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - - memcpy (data, elf_section_data (input_section)->this_hdr.contents, - (size_t) input_section->size); - - if ((input_section->flags & SEC_RELOC) != 0 - && input_section->reloc_count > 0) - { - asection **secpp; - Elf_Internal_Sym *isym, *isymend; - bfd_size_type amt; - - internal_relocs = (_bfd_elf_link_read_relocs - (input_bfd, input_section, (PTR) NULL, - (Elf_Internal_Rela *) NULL, FALSE)); - if (internal_relocs == NULL) - goto error_return; - - if (symtab_hdr->sh_info != 0) - { - isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; - if (isymbuf == NULL) - isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, - symtab_hdr->sh_info, 0, - NULL, NULL, NULL); - if (isymbuf == NULL) - goto error_return; - } - - amt = symtab_hdr->sh_info; - amt *= sizeof (asection *); - sections = (asection **) bfd_malloc (amt); - if (sections == NULL && amt != 0) - goto error_return; - - isymend = isymbuf + symtab_hdr->sh_info; - for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp) - { - asection *isec; - - if (isym->st_shndx == SHN_UNDEF) - isec = bfd_und_section_ptr; - else if (isym->st_shndx == SHN_ABS) - isec = bfd_abs_section_ptr; - else if (isym->st_shndx == SHN_COMMON) - isec = bfd_com_section_ptr; - else - isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx); - - *secpp = isec; - } - - if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd, - input_section, data, internal_relocs, - isymbuf, sections)) - goto error_return; - - if (sections != NULL) - free (sections); - if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (internal_relocs != elf_section_data (input_section)->relocs) - free (internal_relocs); - } - - return data; - - error_return: - if (sections != NULL) - free (sections); - if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf) - free (isymbuf); - if (internal_relocs != NULL - && internal_relocs != elf_section_data (input_section)->relocs) - free (internal_relocs); - return NULL; -} - -/* Assorted hash table functions. */ - -/* Initialize an entry in the link hash table. */ - -/* Create an entry in an MN10300 ELF linker hash table. */ - -static struct bfd_hash_entry * -elf32_mn10300_link_hash_newfunc (entry, table, string) - struct bfd_hash_entry *entry; - struct bfd_hash_table *table; - const char *string; -{ - struct elf32_mn10300_link_hash_entry *ret = - (struct elf32_mn10300_link_hash_entry *) entry; - - /* Allocate the structure if it has not already been allocated by a - subclass. */ - if (ret == (struct elf32_mn10300_link_hash_entry *) NULL) - ret = ((struct elf32_mn10300_link_hash_entry *) - bfd_hash_allocate (table, - sizeof (struct elf32_mn10300_link_hash_entry))); - if (ret == (struct elf32_mn10300_link_hash_entry *) NULL) - return (struct bfd_hash_entry *) ret; - - /* Call the allocation method of the superclass. */ - ret = ((struct elf32_mn10300_link_hash_entry *) - _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, - table, string)); - if (ret != (struct elf32_mn10300_link_hash_entry *) NULL) - { - ret->direct_calls = 0; - ret->stack_size = 0; - ret->movm_args = 0; - ret->movm_stack_size = 0; - ret->flags = 0; - } - - return (struct bfd_hash_entry *) ret; -} - -/* Create an mn10300 ELF linker hash table. */ - -static struct bfd_link_hash_table * -elf32_mn10300_link_hash_table_create (abfd) - bfd *abfd; -{ - struct elf32_mn10300_link_hash_table *ret; - bfd_size_type amt = sizeof (struct elf32_mn10300_link_hash_table); - - ret = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt); - if (ret == (struct elf32_mn10300_link_hash_table *) NULL) - return NULL; - - if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, - elf32_mn10300_link_hash_newfunc, - sizeof (struct elf32_mn10300_link_hash_entry))) - { - free (ret); - return NULL; - } - - ret->flags = 0; - amt = sizeof (struct elf_link_hash_table); - ret->static_hash_table - = (struct elf32_mn10300_link_hash_table *) bfd_malloc (amt); - if (ret->static_hash_table == NULL) - { - free (ret); - return NULL; - } - - if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd, - elf32_mn10300_link_hash_newfunc, - sizeof (struct elf32_mn10300_link_hash_entry))) - { - free (ret->static_hash_table); - free (ret); - return NULL; - } - return &ret->root.root; -} - -/* Free an mn10300 ELF linker hash table. */ - -static void -elf32_mn10300_link_hash_table_free (hash) - struct bfd_link_hash_table *hash; -{ - struct elf32_mn10300_link_hash_table *ret - = (struct elf32_mn10300_link_hash_table *) hash; - - _bfd_generic_link_hash_table_free - ((struct bfd_link_hash_table *) ret->static_hash_table); - _bfd_generic_link_hash_table_free - ((struct bfd_link_hash_table *) ret); -} - -static unsigned long -elf_mn10300_mach (flags) - flagword flags; -{ - switch (flags & EF_MN10300_MACH) - { - case E_MN10300_MACH_MN10300: - default: - return bfd_mach_mn10300; - - case E_MN10300_MACH_AM33: - return bfd_mach_am33; - - case E_MN10300_MACH_AM33_2: - return bfd_mach_am33_2; - } -} - -/* The final processing done just before writing out a MN10300 ELF object - file. This gets the MN10300 architecture right based on the machine - number. */ - -void -_bfd_mn10300_elf_final_write_processing (abfd, linker) - bfd *abfd; - bfd_boolean linker ATTRIBUTE_UNUSED; -{ - unsigned long val; - - switch (bfd_get_mach (abfd)) - { - default: - case bfd_mach_mn10300: - val = E_MN10300_MACH_MN10300; - break; - - case bfd_mach_am33: - val = E_MN10300_MACH_AM33; - break; - - case bfd_mach_am33_2: - val = E_MN10300_MACH_AM33_2; - break; - } - - elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH); - elf_elfheader (abfd)->e_flags |= val; -} - -bfd_boolean -_bfd_mn10300_elf_object_p (abfd) - bfd *abfd; -{ - bfd_default_set_arch_mach (abfd, bfd_arch_mn10300, - elf_mn10300_mach (elf_elfheader (abfd)->e_flags)); - return TRUE; -} - -/* Merge backend specific data from an object file to the output - object file when linking. */ - -bfd_boolean -_bfd_mn10300_elf_merge_private_bfd_data (ibfd, obfd) - bfd *ibfd; - bfd *obfd; -{ - if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour - || bfd_get_flavour (obfd) != bfd_target_elf_flavour) - return TRUE; - - if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) - && bfd_get_mach (obfd) < bfd_get_mach (ibfd)) - { - if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), - bfd_get_mach (ibfd))) - return FALSE; - } - - return TRUE; -} - -#define PLT0_ENTRY_SIZE 15 -#define PLT_ENTRY_SIZE 20 -#define PIC_PLT_ENTRY_SIZE 24 - -static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] = -{ - 0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */ - 0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */ - 0xf0, 0xf4, /* jmp (a0) */ -}; - -static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] = -{ - 0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */ - 0xf0, 0xf4, /* jmp (a0) */ - 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ - 0xdc, 0, 0, 0, 0, /* jmp .plt0 */ -}; - -static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] = -{ - 0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */ - 0xf0, 0xf4, /* jmp (a0) */ - 0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */ - 0xf8, 0x22, 8, /* mov (8,a2),a0 */ - 0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */ - 0xf0, 0xf4, /* jmp (a0) */ -}; - -/* Return size of the first PLT entry. */ -#define elf_mn10300_sizeof_plt0(info) \ - (info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE) - -/* Return size of a PLT entry. */ -#define elf_mn10300_sizeof_plt(info) \ - (info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE) - -/* Return offset of the PLT0 address in an absolute PLT entry. */ -#define elf_mn10300_plt_plt0_offset(info) 16 - -/* Return offset of the linker in PLT0 entry. */ -#define elf_mn10300_plt0_linker_offset(info) 2 - -/* Return offset of the GOT id in PLT0 entry. */ -#define elf_mn10300_plt0_gotid_offset(info) 9 - -/* Return offset of the temporary in PLT entry */ -#define elf_mn10300_plt_temp_offset(info) 8 - -/* Return offset of the symbol in PLT entry. */ -#define elf_mn10300_plt_symbol_offset(info) 2 - -/* Return offset of the relocation in PLT entry. */ -#define elf_mn10300_plt_reloc_offset(info) 11 - -/* The name of the dynamic interpreter. This is put in the .interp - section. */ - -#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" - -/* Create dynamic sections when linking against a dynamic object. */ - -static bfd_boolean -_bfd_mn10300_elf_create_dynamic_sections (abfd, info) - bfd *abfd; - struct bfd_link_info *info; -{ - flagword flags; - asection * s; - const struct elf_backend_data * bed = get_elf_backend_data (abfd); - int ptralign = 0; - - switch (bed->s->arch_size) - { - case 32: - ptralign = 2; - break; - - case 64: - ptralign = 3; - break; - - default: - bfd_set_error (bfd_error_bad_value); - return FALSE; - } - - /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and - .rel[a].bss sections. */ - - flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY - | SEC_LINKER_CREATED); - - s = bfd_make_section_with_flags (abfd, - (bed->default_use_rela_p - ? ".rela.plt" : ".rel.plt"), - flags | SEC_READONLY); - if (s == NULL - || ! bfd_set_section_alignment (abfd, s, ptralign)) - return FALSE; - - if (! _bfd_mn10300_elf_create_got_section (abfd, info)) - return FALSE; - - { - const char * secname; - char * relname; - flagword secflags; - asection * sec; - - for (sec = abfd->sections; sec; sec = sec->next) - { - secflags = bfd_get_section_flags (abfd, sec); - if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) - || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) - continue; - - secname = bfd_get_section_name (abfd, sec); - relname = (char *) bfd_malloc (strlen (secname) + 6); - strcpy (relname, ".rela"); - strcat (relname, secname); - - s = bfd_make_section_with_flags (abfd, relname, - flags | SEC_READONLY); - if (s == NULL - || ! bfd_set_section_alignment (abfd, s, ptralign)) - return FALSE; - } - } - - if (bed->want_dynbss) - { - /* 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_*_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_with_flags (abfd, ".dynbss", - SEC_ALLOC | SEC_LINKER_CREATED); - if (s == NULL) - return FALSE; - - /* The .rel[a].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_with_flags (abfd, - (bed->default_use_rela_p - ? ".rela.bss" : ".rel.bss"), - flags | SEC_READONLY); - if (s == NULL - || ! bfd_set_section_alignment (abfd, s, ptralign)) - return FALSE; - } - } - - return TRUE; -} - -/* Adjust a symbol defined by a dynamic object and referenced by a - regular object. The current definition is in some section of the - dynamic object, but we're not including those sections. We have to - change the definition to something the rest of the link can - understand. */ - -static bfd_boolean -_bfd_mn10300_elf_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 - && (h->needs_plt - || h->u.weakdef != NULL - || (h->def_dynamic - && h->ref_regular - && !h->def_regular))); - - /* 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->needs_plt) - { - if (! info->shared - && !h->def_dynamic - && !h->ref_dynamic) - { - /* This case can occur if we saw a PLT reloc in an input - file, but the symbol was never referred to by a dynamic - object. In such a case, we don't actually need to build - a procedure linkage table, and we can just do a REL32 - reloc instead. */ - BFD_ASSERT (h->needs_plt); - return TRUE; - } - - /* Make sure this symbol is output as a dynamic symbol. */ - if (h->dynindx == -1) - { - if (! bfd_elf_link_record_dynamic_symbol (info, h)) - return FALSE; - } - - 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->size == 0) - s->size += elf_mn10300_sizeof_plt0 (info); - - /* 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->def_regular) - { - h->root.u.def.section = s; - h->root.u.def.value = s->size; - } - - h->plt.offset = s->size; - - /* Make room for this entry. */ - s->size += elf_mn10300_sizeof_plt (info); - - /* 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->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->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->u.weakdef != NULL) - { - BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined - || h->u.weakdef->root.type == bfd_link_hash_defweak); - h->root.u.def.section = h->u.weakdef->root.u.def.section; - h->root.u.def.value = h->u.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; - - /* If there are no references to this symbol that do not use the - GOT, we don't need to generate a copy reloc. */ - if (!h->non_got_ref) - return TRUE; - - if (h->size == 0) - { - (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), - h->root.root.string); - 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); - - /* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to - copy the initial value out of the dynamic object and into the - runtime process image. We need to remember the offset into the - .rela.bss section we are going to use. */ - if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) - { - asection * srel; - - srel = bfd_get_section_by_name (dynobj, ".rela.bss"); - BFD_ASSERT (srel != NULL); - srel->size += sizeof (Elf32_External_Rela); - h->needs_copy = 1; - } - - /* 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->size = BFD_ALIGN (s->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->size; - - /* Increment the section size to make room for the symbol. */ - s->size += h->size; - - return TRUE; -} - -/* Set the sizes of the dynamic sections. */ - -static bfd_boolean -_bfd_mn10300_elf_size_dynamic_sections (output_bfd, info) - bfd * output_bfd; - struct bfd_link_info * info; -{ - bfd * dynobj; - asection * s; - bfd_boolean plt; - bfd_boolean relocs; - bfd_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->executable) - { - s = bfd_get_section_by_name (dynobj, ".interp"); - BFD_ASSERT (s != NULL); - s->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->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; - - if ((s->flags & SEC_LINKER_CREATED) == 0) - continue; - - /* It's OK to base decisions on the section name, because none - of the dynobj section names depend upon the input files. */ - name = bfd_get_section_name (dynobj, s); - - if (strcmp (name, ".plt") == 0) - { - /* Remember whether there is a PLT. */ - plt = s->size != 0; - } - else if (strncmp (name, ".rela", 5) == 0) - { - if (s->size != 0) - { - asection * target; - - /* Remember whether there are any reloc sections other - than .rela.plt. */ - if (strcmp (name, ".rela.plt") != 0) - { - const char * outname; - - relocs = TRUE; - - /* If this relocation section applies to a read only - section, then we probably need a DT_TEXTREL - entry. The entries in the .rela.plt section - really apply to the .got section, which we - created ourselves and so know is not readonly. */ - outname = bfd_get_section_name (output_bfd, - s->output_section); - target = bfd_get_section_by_name (output_bfd, outname + 5); - if (target != NULL - && (target->flags & SEC_READONLY) != 0 - && (target->flags & SEC_ALLOC) != 0) - reltext = TRUE; - } - - /* We use the reloc_count field as a counter if we need - to copy relocs into the output file. */ - s->reloc_count = 0; - } - } - else if (strncmp (name, ".got", 4) != 0 - && strcmp (name, ".dynbss") != 0) - /* It's not one of our sections, so don't allocate space. */ - continue; - - if (s->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. */ - s->flags |= SEC_EXCLUDE; - continue; - } - - if ((s->flags & SEC_HAS_CONTENTS) == 0) - continue; - - /* Allocate memory for the section contents. We use bfd_zalloc - here in case unused entries are not reclaimed before the - section's contents are written out. This should not happen, - but this way if it does, we get a R_MN10300_NONE reloc - instead of garbage. */ - s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); - if (s->contents == NULL) - return FALSE; - } - - if (elf_hash_table (info)->dynamic_sections_created) - { - /* Add some entries to the .dynamic section. We fill in the - values later, in _bfd_mn10300_elf_finish_dynamic_sections, - but we must add the entries now so that we get the correct - size for the .dynamic section. The DT_DEBUG entry is filled - in by the dynamic linker and used by the debugger. */ - if (! info->shared) - { - if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0)) - return FALSE; - } - - if (plt) - { - if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0) - || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) - || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA) - || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) - return FALSE; - } - - if (relocs) - { - if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0) - || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0) - || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT, - sizeof (Elf32_External_Rela))) - return FALSE; - } - - if (reltext) - { - if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0)) - return FALSE; - } - } - - return TRUE; -} - -/* Finish up dynamic symbol handling. We set the contents of various - dynamic sections here. */ - -static bfd_boolean -_bfd_mn10300_elf_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 * srel; - bfd_vma plt_index; - bfd_vma got_offset; - Elf_Internal_Rela rel; - - /* 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"); - srel = bfd_get_section_by_name (dynobj, ".rela.plt"); - BFD_ASSERT (splt != NULL && sgot != NULL && srel != 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 - elf_mn10300_sizeof_plt0 (info)) - / elf_mn10300_sizeof_plt (info)); - - /* 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. */ - if (! info->shared) - { - memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry, - elf_mn10300_sizeof_plt (info)); - bfd_put_32 (output_bfd, - (sgot->output_section->vma - + sgot->output_offset - + got_offset), - (splt->contents + h->plt.offset - + elf_mn10300_plt_symbol_offset (info))); - - bfd_put_32 (output_bfd, - (1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)), - (splt->contents + h->plt.offset - + elf_mn10300_plt_plt0_offset (info))); - } - else - { - memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry, - elf_mn10300_sizeof_plt (info)); - - bfd_put_32 (output_bfd, got_offset, - (splt->contents + h->plt.offset - + elf_mn10300_plt_symbol_offset (info))); - } - - bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela), - (splt->contents + h->plt.offset - + elf_mn10300_plt_reloc_offset (info))); - - /* Fill in the entry in the global offset table. */ - bfd_put_32 (output_bfd, - (splt->output_section->vma - + splt->output_offset - + h->plt.offset - + elf_mn10300_plt_temp_offset (info)), - sgot->contents + got_offset); - - /* Fill in the entry in the .rela.plt section. */ - rel.r_offset = (sgot->output_section->vma - + sgot->output_offset - + got_offset); - rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT); - rel.r_addend = 0; - bfd_elf32_swap_reloca_out (output_bfd, &rel, - (bfd_byte *) ((Elf32_External_Rela *) srel->contents - + plt_index)); - - if (!h->def_regular) - /* 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 * srel; - Elf_Internal_Rela rel; - - /* This symbol has an entry in the global offset table. Set it up. */ - - sgot = bfd_get_section_by_name (dynobj, ".got"); - srel = bfd_get_section_by_name (dynobj, ".rela.got"); - BFD_ASSERT (sgot != NULL && srel != NULL); - - rel.r_offset = (sgot->output_section->vma - + sgot->output_offset - + (h->got.offset &~ 1)); - - /* If this is a -Bsymbolic link, and the symbol is defined - locally, we just want to emit a RELATIVE reloc. Likewise if - the symbol was forced to be local because of a version file. - The entry in the global offset table will already have been - initialized in the relocate_section function. */ - if (info->shared - && (info->symbolic || h->dynindx == -1) - && h->def_regular) - { - rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE); - rel.r_addend = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - } - else - { - bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); - rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT); - rel.r_addend = 0; - } - - bfd_elf32_swap_reloca_out (output_bfd, &rel, - (bfd_byte *) ((Elf32_External_Rela *) srel->contents - + srel->reloc_count)); - ++ srel->reloc_count; - } - - if (h->needs_copy) - { - asection * s; - Elf_Internal_Rela rel; - - /* 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); - - rel.r_offset = (h->root.u.def.value - + h->root.u.def.section->output_section->vma - + h->root.u.def.section->output_offset); - rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY); - rel.r_addend = 0; - bfd_elf32_swap_reloca_out (output_bfd, &rel, - (bfd_byte *) ((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 - || h == elf_hash_table (info)->hgot) - sym->st_shndx = SHN_ABS; - - return TRUE; -} - -/* Finish up the dynamic sections. */ - -static bfd_boolean -_bfd_mn10300_elf_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; - Elf32_External_Dyn * dynconend; - - BFD_ASSERT (sdyn != NULL); - - dyncon = (Elf32_External_Dyn *) sdyn->contents; - dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->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); - dyn.d_un.d_val = s->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. */ - s = bfd_get_section_by_name (output_bfd, ".rela.plt"); - if (s != NULL) - dyn.d_un.d_val -= s->size; - bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); - break; - } - } - - /* Fill in the first entry in the procedure linkage table. */ - splt = bfd_get_section_by_name (dynobj, ".plt"); - if (splt && splt->size > 0) - { - if (info->shared) - { - memcpy (splt->contents, elf_mn10300_pic_plt_entry, - elf_mn10300_sizeof_plt (info)); - } - else - { - memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE); - bfd_put_32 (output_bfd, - sgot->output_section->vma + sgot->output_offset + 4, - splt->contents + elf_mn10300_plt0_gotid_offset (info)); - bfd_put_32 (output_bfd, - sgot->output_section->vma + sgot->output_offset + 8, - splt->contents + elf_mn10300_plt0_linker_offset (info)); - } - - /* UnixWare sets the entsize of .plt to 4, although that doesn't - really seem like the right value. */ - elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4; - } - } - - /* Fill in the first three entries in the global offset table. */ - if (sgot->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; -} - -/* Classify relocation types, such that combreloc can sort them - properly. */ - -static enum elf_reloc_type_class -_bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela *rela) -{ - switch ((int) ELF32_R_TYPE (rela->r_info)) - { - case R_MN10300_RELATIVE: - return reloc_class_relative; - case R_MN10300_JMP_SLOT: - return reloc_class_plt; - case R_MN10300_COPY: - return reloc_class_copy; - default: - return reloc_class_normal; - } -} - -#ifndef ELF_ARCH -#define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec -#define TARGET_LITTLE_NAME "elf32-mn10300" -#define ELF_ARCH bfd_arch_mn10300 -#define ELF_MACHINE_CODE EM_MN10300 -#define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300 -#define ELF_MAXPAGESIZE 0x1000 -#endif - -#define elf_info_to_howto mn10300_info_to_howto -#define elf_info_to_howto_rel 0 -#define elf_backend_can_gc_sections 1 -#define elf_backend_rela_normal 1 -#define elf_backend_check_relocs mn10300_elf_check_relocs -#define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook -#define elf_backend_relocate_section mn10300_elf_relocate_section -#define bfd_elf32_bfd_relax_section mn10300_elf_relax_section -#define bfd_elf32_bfd_get_relocated_section_contents \ - mn10300_elf_get_relocated_section_contents -#define bfd_elf32_bfd_link_hash_table_create \ - elf32_mn10300_link_hash_table_create -#define bfd_elf32_bfd_link_hash_table_free \ - elf32_mn10300_link_hash_table_free - -#ifndef elf_symbol_leading_char -#define elf_symbol_leading_char '_' -#endif - -/* So we can set bits in e_flags. */ -#define elf_backend_final_write_processing \ - _bfd_mn10300_elf_final_write_processing -#define elf_backend_object_p _bfd_mn10300_elf_object_p - -#define bfd_elf32_bfd_merge_private_bfd_data \ - _bfd_mn10300_elf_merge_private_bfd_data - -#define elf_backend_can_gc_sections 1 -#define elf_backend_create_dynamic_sections \ - _bfd_mn10300_elf_create_dynamic_sections -#define elf_backend_adjust_dynamic_symbol \ - _bfd_mn10300_elf_adjust_dynamic_symbol -#define elf_backend_size_dynamic_sections \ - _bfd_mn10300_elf_size_dynamic_sections -#define elf_backend_finish_dynamic_symbol \ - _bfd_mn10300_elf_finish_dynamic_symbol -#define elf_backend_finish_dynamic_sections \ - _bfd_mn10300_elf_finish_dynamic_sections - -#define elf_backend_reloc_type_class \ - _bfd_mn10300_elf_reloc_type_class - -#define elf_backend_want_got_plt 1 -#define elf_backend_plt_readonly 1 -#define elf_backend_want_plt_sym 0 -#define elf_backend_got_header_size 12 - -#include "elf32-target.h" |