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julius |
/* Matsushita 10300 specific support for 32-bit ELF
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Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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2006, 2007, 2008, 2009 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/mn10300.h"
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#include "libiberty.h"
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/* The mn10300 linker needs to keep track of the number of relocs that
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it decides to copy in check_relocs for each symbol. This is so
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that it can discard PC relative relocs if it doesn't need them when
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linking with -Bsymbolic. We store the information in a field
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extending the regular ELF linker hash table. */
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struct elf32_mn10300_link_hash_entry
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{
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/* The basic elf link hash table entry. */
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struct elf_link_hash_entry root;
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/* For function symbols, the number of times this function is
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called directly (ie by name). */
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unsigned int direct_calls;
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/* For function symbols, the size of this function's stack
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(if <= 255 bytes). We stuff this into "call" instructions
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to this target when it's valid and profitable to do so.
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This does not include stack allocated by movm! */
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unsigned char stack_size;
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/* For function symbols, arguments (if any) for movm instruction
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in the prologue. We stuff this value into "call" instructions
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to the target when it's valid and profitable to do so. */
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unsigned char movm_args;
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/* For function symbols, the amount of stack space that would be allocated
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by the movm instruction. This is redundant with movm_args, but we
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add it to the hash table to avoid computing it over and over. */
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unsigned char movm_stack_size;
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/* When set, convert all "call" instructions to this target into "calls"
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instructions. */
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#define MN10300_CONVERT_CALL_TO_CALLS 0x1
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/* Used to mark functions which have had redundant parts of their
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prologue deleted. */
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#define MN10300_DELETED_PROLOGUE_BYTES 0x2
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unsigned char flags;
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/* Calculated value. */
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bfd_vma value;
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};
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/* We derive a hash table from the main elf linker hash table so
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we can store state variables and a secondary hash table without
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resorting to global variables. */
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struct elf32_mn10300_link_hash_table
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{
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/* The main hash table. */
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struct elf_link_hash_table root;
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/* A hash table for static functions. We could derive a new hash table
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instead of using the full elf32_mn10300_link_hash_table if we wanted
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to save some memory. */
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struct elf32_mn10300_link_hash_table *static_hash_table;
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/* Random linker state flags. */
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#define MN10300_HASH_ENTRIES_INITIALIZED 0x1
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char flags;
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};
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#ifndef streq
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#define streq(a, b) (strcmp ((a),(b)) == 0)
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#endif
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/* For MN10300 linker hash table. */
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/* Get the MN10300 ELF linker hash table from a link_info structure. */
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#define elf32_mn10300_hash_table(p) \
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((struct elf32_mn10300_link_hash_table *) ((p)->hash))
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#define elf32_mn10300_link_hash_traverse(table, func, info) \
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(elf_link_hash_traverse \
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(&(table)->root, \
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(bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
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(info)))
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static reloc_howto_type elf_mn10300_howto_table[] =
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{
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/* Dummy relocation. Does nothing. */
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HOWTO (R_MN10300_NONE,
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0,
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2,
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16,
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FALSE,
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0,
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complain_overflow_bitfield,
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bfd_elf_generic_reloc,
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"R_MN10300_NONE",
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FALSE,
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0,
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0,
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FALSE),
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/* Standard 32 bit reloc. */
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HOWTO (R_MN10300_32,
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0,
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2,
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32,
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FALSE,
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0,
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complain_overflow_bitfield,
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bfd_elf_generic_reloc,
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"R_MN10300_32",
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FALSE,
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0xffffffff,
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0xffffffff,
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FALSE),
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/* Standard 16 bit reloc. */
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HOWTO (R_MN10300_16,
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0,
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1,
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16,
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FALSE,
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0,
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complain_overflow_bitfield,
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bfd_elf_generic_reloc,
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"R_MN10300_16",
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FALSE,
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0xffff,
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0xffff,
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FALSE),
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/* Standard 8 bit reloc. */
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HOWTO (R_MN10300_8,
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0,
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0,
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8,
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FALSE,
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0,
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complain_overflow_bitfield,
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bfd_elf_generic_reloc,
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"R_MN10300_8",
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FALSE,
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0xff,
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0xff,
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FALSE),
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/* Standard 32bit pc-relative reloc. */
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HOWTO (R_MN10300_PCREL32,
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0,
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2,
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32,
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TRUE,
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0,
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complain_overflow_bitfield,
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bfd_elf_generic_reloc,
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"R_MN10300_PCREL32",
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FALSE,
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0xffffffff,
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0xffffffff,
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TRUE),
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/* Standard 16bit pc-relative reloc. */
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HOWTO (R_MN10300_PCREL16,
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0,
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1,
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16,
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TRUE,
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0,
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complain_overflow_bitfield,
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bfd_elf_generic_reloc,
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"R_MN10300_PCREL16",
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FALSE,
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0xffff,
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0xffff,
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TRUE),
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/* Standard 8 pc-relative reloc. */
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HOWTO (R_MN10300_PCREL8,
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0,
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0,
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8,
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TRUE,
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0,
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complain_overflow_bitfield,
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bfd_elf_generic_reloc,
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"R_MN10300_PCREL8",
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FALSE,
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0xff,
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0xff,
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TRUE),
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/* GNU extension to record C++ vtable hierarchy. */
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HOWTO (R_MN10300_GNU_VTINHERIT, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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NULL, /* special_function */
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"R_MN10300_GNU_VTINHERIT", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* GNU extension to record C++ vtable member usage */
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HOWTO (R_MN10300_GNU_VTENTRY, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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NULL, /* special_function */
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"R_MN10300_GNU_VTENTRY", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* Standard 24 bit reloc. */
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HOWTO (R_MN10300_24,
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0,
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2,
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24,
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FALSE,
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0,
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complain_overflow_bitfield,
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bfd_elf_generic_reloc,
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"R_MN10300_24",
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FALSE,
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0xffffff,
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0xffffff,
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FALSE),
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HOWTO (R_MN10300_GOTPC32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* */
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"R_MN10300_GOTPC32", /* name */
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FALSE, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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HOWTO (R_MN10300_GOTPC16, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* */
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"R_MN10300_GOTPC16", /* name */
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FALSE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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282 |
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HOWTO (R_MN10300_GOTOFF32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* */
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"R_MN10300_GOTOFF32", /* name */
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FALSE, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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296 |
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HOWTO (R_MN10300_GOTOFF24, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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24, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* */
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"R_MN10300_GOTOFF24", /* name */
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FALSE, /* partial_inplace */
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306 |
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0xffffff, /* src_mask */
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307 |
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0xffffff, /* dst_mask */
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308 |
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FALSE), /* pcrel_offset */
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309 |
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310 |
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HOWTO (R_MN10300_GOTOFF16, /* type */
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0, /* rightshift */
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312 |
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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314 |
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FALSE, /* pc_relative */
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315 |
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0, /* bitpos */
|
316 |
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complain_overflow_bitfield, /* complain_on_overflow */
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317 |
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bfd_elf_generic_reloc, /* */
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318 |
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"R_MN10300_GOTOFF16", /* name */
|
319 |
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FALSE, /* partial_inplace */
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320 |
|
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0xffff, /* src_mask */
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|
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0xffff, /* dst_mask */
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322 |
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FALSE), /* pcrel_offset */
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323 |
|
|
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324 |
|
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HOWTO (R_MN10300_PLT32, /* type */
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325 |
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0, /* rightshift */
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326 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
|
327 |
|
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32, /* bitsize */
|
328 |
|
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TRUE, /* pc_relative */
|
329 |
|
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0, /* bitpos */
|
330 |
|
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complain_overflow_bitfield, /* complain_on_overflow */
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331 |
|
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bfd_elf_generic_reloc, /* */
|
332 |
|
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"R_MN10300_PLT32", /* name */
|
333 |
|
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FALSE, /* partial_inplace */
|
334 |
|
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0xffffffff, /* src_mask */
|
335 |
|
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0xffffffff, /* dst_mask */
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336 |
|
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TRUE), /* pcrel_offset */
|
337 |
|
|
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338 |
|
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HOWTO (R_MN10300_PLT16, /* type */
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339 |
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0, /* rightshift */
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340 |
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1, /* size (0 = byte, 1 = short, 2 = long) */
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341 |
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16, /* bitsize */
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342 |
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TRUE, /* pc_relative */
|
343 |
|
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0, /* bitpos */
|
344 |
|
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complain_overflow_bitfield, /* complain_on_overflow */
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345 |
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bfd_elf_generic_reloc, /* */
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346 |
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"R_MN10300_PLT16", /* name */
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347 |
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FALSE, /* partial_inplace */
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348 |
|
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0xffff, /* src_mask */
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349 |
|
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0xffff, /* dst_mask */
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350 |
|
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TRUE), /* pcrel_offset */
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351 |
|
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352 |
|
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HOWTO (R_MN10300_GOT32, /* type */
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353 |
|
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0, /* rightshift */
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354 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
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355 |
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32, /* bitsize */
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356 |
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FALSE, /* pc_relative */
|
357 |
|
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0, /* bitpos */
|
358 |
|
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complain_overflow_bitfield, /* complain_on_overflow */
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359 |
|
|
bfd_elf_generic_reloc, /* */
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360 |
|
|
"R_MN10300_GOT32", /* name */
|
361 |
|
|
FALSE, /* partial_inplace */
|
362 |
|
|
0xffffffff, /* src_mask */
|
363 |
|
|
0xffffffff, /* dst_mask */
|
364 |
|
|
FALSE), /* pcrel_offset */
|
365 |
|
|
|
366 |
|
|
HOWTO (R_MN10300_GOT24, /* type */
|
367 |
|
|
0, /* rightshift */
|
368 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
369 |
|
|
24, /* bitsize */
|
370 |
|
|
FALSE, /* pc_relative */
|
371 |
|
|
0, /* bitpos */
|
372 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
373 |
|
|
bfd_elf_generic_reloc, /* */
|
374 |
|
|
"R_MN10300_GOT24", /* name */
|
375 |
|
|
FALSE, /* partial_inplace */
|
376 |
|
|
0xffffffff, /* src_mask */
|
377 |
|
|
0xffffffff, /* dst_mask */
|
378 |
|
|
FALSE), /* pcrel_offset */
|
379 |
|
|
|
380 |
|
|
HOWTO (R_MN10300_GOT16, /* type */
|
381 |
|
|
0, /* rightshift */
|
382 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
383 |
|
|
16, /* bitsize */
|
384 |
|
|
FALSE, /* pc_relative */
|
385 |
|
|
0, /* bitpos */
|
386 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
387 |
|
|
bfd_elf_generic_reloc, /* */
|
388 |
|
|
"R_MN10300_GOT16", /* name */
|
389 |
|
|
FALSE, /* partial_inplace */
|
390 |
|
|
0xffffffff, /* src_mask */
|
391 |
|
|
0xffffffff, /* dst_mask */
|
392 |
|
|
FALSE), /* pcrel_offset */
|
393 |
|
|
|
394 |
|
|
HOWTO (R_MN10300_COPY, /* type */
|
395 |
|
|
0, /* rightshift */
|
396 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
397 |
|
|
32, /* bitsize */
|
398 |
|
|
FALSE, /* pc_relative */
|
399 |
|
|
0, /* bitpos */
|
400 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
401 |
|
|
bfd_elf_generic_reloc, /* */
|
402 |
|
|
"R_MN10300_COPY", /* name */
|
403 |
|
|
FALSE, /* partial_inplace */
|
404 |
|
|
0xffffffff, /* src_mask */
|
405 |
|
|
0xffffffff, /* dst_mask */
|
406 |
|
|
FALSE), /* pcrel_offset */
|
407 |
|
|
|
408 |
|
|
HOWTO (R_MN10300_GLOB_DAT, /* type */
|
409 |
|
|
0, /* rightshift */
|
410 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
411 |
|
|
32, /* bitsize */
|
412 |
|
|
FALSE, /* pc_relative */
|
413 |
|
|
0, /* bitpos */
|
414 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
415 |
|
|
bfd_elf_generic_reloc, /* */
|
416 |
|
|
"R_MN10300_GLOB_DAT", /* name */
|
417 |
|
|
FALSE, /* partial_inplace */
|
418 |
|
|
0xffffffff, /* src_mask */
|
419 |
|
|
0xffffffff, /* dst_mask */
|
420 |
|
|
FALSE), /* pcrel_offset */
|
421 |
|
|
|
422 |
|
|
HOWTO (R_MN10300_JMP_SLOT, /* type */
|
423 |
|
|
0, /* rightshift */
|
424 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
425 |
|
|
32, /* bitsize */
|
426 |
|
|
FALSE, /* pc_relative */
|
427 |
|
|
0, /* bitpos */
|
428 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
429 |
|
|
bfd_elf_generic_reloc, /* */
|
430 |
|
|
"R_MN10300_JMP_SLOT", /* name */
|
431 |
|
|
FALSE, /* partial_inplace */
|
432 |
|
|
0xffffffff, /* src_mask */
|
433 |
|
|
0xffffffff, /* dst_mask */
|
434 |
|
|
FALSE), /* pcrel_offset */
|
435 |
|
|
|
436 |
|
|
HOWTO (R_MN10300_RELATIVE, /* type */
|
437 |
|
|
0, /* rightshift */
|
438 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
439 |
|
|
32, /* bitsize */
|
440 |
|
|
FALSE, /* pc_relative */
|
441 |
|
|
0, /* bitpos */
|
442 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
443 |
|
|
bfd_elf_generic_reloc, /* */
|
444 |
|
|
"R_MN10300_RELATIVE", /* name */
|
445 |
|
|
FALSE, /* partial_inplace */
|
446 |
|
|
0xffffffff, /* src_mask */
|
447 |
|
|
0xffffffff, /* dst_mask */
|
448 |
|
|
FALSE), /* pcrel_offset */
|
449 |
|
|
|
450 |
|
|
EMPTY_HOWTO (24),
|
451 |
|
|
EMPTY_HOWTO (25),
|
452 |
|
|
EMPTY_HOWTO (26),
|
453 |
|
|
EMPTY_HOWTO (27),
|
454 |
|
|
EMPTY_HOWTO (28),
|
455 |
|
|
EMPTY_HOWTO (29),
|
456 |
|
|
EMPTY_HOWTO (30),
|
457 |
|
|
EMPTY_HOWTO (31),
|
458 |
|
|
EMPTY_HOWTO (32),
|
459 |
|
|
|
460 |
|
|
HOWTO (R_MN10300_SYM_DIFF, /* type */
|
461 |
|
|
0, /* rightshift */
|
462 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
463 |
|
|
32, /* bitsize */
|
464 |
|
|
FALSE, /* pc_relative */
|
465 |
|
|
0, /* bitpos */
|
466 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
467 |
|
|
NULL, /* special handler. */
|
468 |
|
|
"R_MN10300_SYM_DIFF", /* name */
|
469 |
|
|
FALSE, /* partial_inplace */
|
470 |
|
|
0xffffffff, /* src_mask */
|
471 |
|
|
0xffffffff, /* dst_mask */
|
472 |
|
|
FALSE), /* pcrel_offset */
|
473 |
|
|
|
474 |
|
|
HOWTO (R_MN10300_ALIGN, /* type */
|
475 |
|
|
0, /* rightshift */
|
476 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
477 |
|
|
32, /* bitsize */
|
478 |
|
|
FALSE, /* pc_relative */
|
479 |
|
|
0, /* bitpos */
|
480 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
481 |
|
|
NULL, /* special handler. */
|
482 |
|
|
"R_MN10300_ALIGN", /* name */
|
483 |
|
|
FALSE, /* partial_inplace */
|
484 |
|
|
0, /* src_mask */
|
485 |
|
|
0, /* dst_mask */
|
486 |
|
|
FALSE) /* pcrel_offset */
|
487 |
|
|
};
|
488 |
|
|
|
489 |
|
|
struct mn10300_reloc_map
|
490 |
|
|
{
|
491 |
|
|
bfd_reloc_code_real_type bfd_reloc_val;
|
492 |
|
|
unsigned char elf_reloc_val;
|
493 |
|
|
};
|
494 |
|
|
|
495 |
|
|
static const struct mn10300_reloc_map mn10300_reloc_map[] =
|
496 |
|
|
{
|
497 |
|
|
{ BFD_RELOC_NONE, R_MN10300_NONE, },
|
498 |
|
|
{ BFD_RELOC_32, R_MN10300_32, },
|
499 |
|
|
{ BFD_RELOC_16, R_MN10300_16, },
|
500 |
|
|
{ BFD_RELOC_8, R_MN10300_8, },
|
501 |
|
|
{ BFD_RELOC_32_PCREL, R_MN10300_PCREL32, },
|
502 |
|
|
{ BFD_RELOC_16_PCREL, R_MN10300_PCREL16, },
|
503 |
|
|
{ BFD_RELOC_8_PCREL, R_MN10300_PCREL8, },
|
504 |
|
|
{ BFD_RELOC_24, R_MN10300_24, },
|
505 |
|
|
{ BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT },
|
506 |
|
|
{ BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY },
|
507 |
|
|
{ BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 },
|
508 |
|
|
{ BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 },
|
509 |
|
|
{ BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 },
|
510 |
|
|
{ BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 },
|
511 |
|
|
{ BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 },
|
512 |
|
|
{ BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 },
|
513 |
|
|
{ BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 },
|
514 |
|
|
{ BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 },
|
515 |
|
|
{ BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 },
|
516 |
|
|
{ BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 },
|
517 |
|
|
{ BFD_RELOC_MN10300_COPY, R_MN10300_COPY },
|
518 |
|
|
{ BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT },
|
519 |
|
|
{ BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT },
|
520 |
|
|
{ BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE },
|
521 |
|
|
{ BFD_RELOC_MN10300_SYM_DIFF, R_MN10300_SYM_DIFF },
|
522 |
|
|
{ BFD_RELOC_MN10300_ALIGN, R_MN10300_ALIGN }
|
523 |
|
|
};
|
524 |
|
|
|
525 |
|
|
/* Create the GOT section. */
|
526 |
|
|
|
527 |
|
|
static bfd_boolean
|
528 |
|
|
_bfd_mn10300_elf_create_got_section (bfd * abfd,
|
529 |
|
|
struct bfd_link_info * info)
|
530 |
|
|
{
|
531 |
|
|
flagword flags;
|
532 |
|
|
flagword pltflags;
|
533 |
|
|
asection * s;
|
534 |
|
|
struct elf_link_hash_entry * h;
|
535 |
|
|
const struct elf_backend_data * bed = get_elf_backend_data (abfd);
|
536 |
|
|
int ptralign;
|
537 |
|
|
|
538 |
|
|
/* This function may be called more than once. */
|
539 |
|
|
if (bfd_get_section_by_name (abfd, ".got") != NULL)
|
540 |
|
|
return TRUE;
|
541 |
|
|
|
542 |
|
|
switch (bed->s->arch_size)
|
543 |
|
|
{
|
544 |
|
|
case 32:
|
545 |
|
|
ptralign = 2;
|
546 |
|
|
break;
|
547 |
|
|
|
548 |
|
|
case 64:
|
549 |
|
|
ptralign = 3;
|
550 |
|
|
break;
|
551 |
|
|
|
552 |
|
|
default:
|
553 |
|
|
bfd_set_error (bfd_error_bad_value);
|
554 |
|
|
return FALSE;
|
555 |
|
|
}
|
556 |
|
|
|
557 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
|
558 |
|
|
| SEC_LINKER_CREATED);
|
559 |
|
|
|
560 |
|
|
pltflags = flags;
|
561 |
|
|
pltflags |= SEC_CODE;
|
562 |
|
|
if (bed->plt_not_loaded)
|
563 |
|
|
pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
|
564 |
|
|
if (bed->plt_readonly)
|
565 |
|
|
pltflags |= SEC_READONLY;
|
566 |
|
|
|
567 |
|
|
s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
|
568 |
|
|
if (s == NULL
|
569 |
|
|
|| ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
|
570 |
|
|
return FALSE;
|
571 |
|
|
|
572 |
|
|
/* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
|
573 |
|
|
.plt section. */
|
574 |
|
|
if (bed->want_plt_sym)
|
575 |
|
|
{
|
576 |
|
|
h = _bfd_elf_define_linkage_sym (abfd, info, s,
|
577 |
|
|
"_PROCEDURE_LINKAGE_TABLE_");
|
578 |
|
|
elf_hash_table (info)->hplt = h;
|
579 |
|
|
if (h == NULL)
|
580 |
|
|
return FALSE;
|
581 |
|
|
}
|
582 |
|
|
|
583 |
|
|
s = bfd_make_section_with_flags (abfd, ".got", flags);
|
584 |
|
|
if (s == NULL
|
585 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
586 |
|
|
return FALSE;
|
587 |
|
|
|
588 |
|
|
if (bed->want_got_plt)
|
589 |
|
|
{
|
590 |
|
|
s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
|
591 |
|
|
if (s == NULL
|
592 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
593 |
|
|
return FALSE;
|
594 |
|
|
}
|
595 |
|
|
|
596 |
|
|
/* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
|
597 |
|
|
(or .got.plt) section. We don't do this in the linker script
|
598 |
|
|
because we don't want to define the symbol if we are not creating
|
599 |
|
|
a global offset table. */
|
600 |
|
|
h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_");
|
601 |
|
|
elf_hash_table (info)->hgot = h;
|
602 |
|
|
if (h == NULL)
|
603 |
|
|
return FALSE;
|
604 |
|
|
|
605 |
|
|
/* The first bit of the global offset table is the header. */
|
606 |
|
|
s->size += bed->got_header_size;
|
607 |
|
|
|
608 |
|
|
return TRUE;
|
609 |
|
|
}
|
610 |
|
|
|
611 |
|
|
static reloc_howto_type *
|
612 |
|
|
bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
613 |
|
|
bfd_reloc_code_real_type code)
|
614 |
|
|
{
|
615 |
|
|
unsigned int i;
|
616 |
|
|
|
617 |
|
|
for (i = ARRAY_SIZE (mn10300_reloc_map); i--;)
|
618 |
|
|
if (mn10300_reloc_map[i].bfd_reloc_val == code)
|
619 |
|
|
return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val];
|
620 |
|
|
|
621 |
|
|
return NULL;
|
622 |
|
|
}
|
623 |
|
|
|
624 |
|
|
static reloc_howto_type *
|
625 |
|
|
bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
626 |
|
|
const char *r_name)
|
627 |
|
|
{
|
628 |
|
|
unsigned int i;
|
629 |
|
|
|
630 |
|
|
for (i = ARRAY_SIZE (elf_mn10300_howto_table); i--;)
|
631 |
|
|
if (elf_mn10300_howto_table[i].name != NULL
|
632 |
|
|
&& strcasecmp (elf_mn10300_howto_table[i].name, r_name) == 0)
|
633 |
|
|
return elf_mn10300_howto_table + i;
|
634 |
|
|
|
635 |
|
|
return NULL;
|
636 |
|
|
}
|
637 |
|
|
|
638 |
|
|
/* Set the howto pointer for an MN10300 ELF reloc. */
|
639 |
|
|
|
640 |
|
|
static void
|
641 |
|
|
mn10300_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
|
642 |
|
|
arelent *cache_ptr,
|
643 |
|
|
Elf_Internal_Rela *dst)
|
644 |
|
|
{
|
645 |
|
|
unsigned int r_type;
|
646 |
|
|
|
647 |
|
|
r_type = ELF32_R_TYPE (dst->r_info);
|
648 |
|
|
BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX);
|
649 |
|
|
cache_ptr->howto = elf_mn10300_howto_table + r_type;
|
650 |
|
|
}
|
651 |
|
|
|
652 |
|
|
/* Look through the relocs for a section during the first phase.
|
653 |
|
|
Since we don't do .gots or .plts, we just need to consider the
|
654 |
|
|
virtual table relocs for gc. */
|
655 |
|
|
|
656 |
|
|
static bfd_boolean
|
657 |
|
|
mn10300_elf_check_relocs (bfd *abfd,
|
658 |
|
|
struct bfd_link_info *info,
|
659 |
|
|
asection *sec,
|
660 |
|
|
const Elf_Internal_Rela *relocs)
|
661 |
|
|
{
|
662 |
|
|
bfd_boolean sym_diff_reloc_seen;
|
663 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
664 |
|
|
Elf_Internal_Sym * isymbuf = NULL;
|
665 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
666 |
|
|
const Elf_Internal_Rela *rel;
|
667 |
|
|
const Elf_Internal_Rela *rel_end;
|
668 |
|
|
bfd * dynobj;
|
669 |
|
|
bfd_vma * local_got_offsets;
|
670 |
|
|
asection * sgot;
|
671 |
|
|
asection * srelgot;
|
672 |
|
|
asection * sreloc;
|
673 |
|
|
bfd_boolean result = FALSE;
|
674 |
|
|
|
675 |
|
|
sgot = NULL;
|
676 |
|
|
srelgot = NULL;
|
677 |
|
|
sreloc = NULL;
|
678 |
|
|
|
679 |
|
|
if (info->relocatable)
|
680 |
|
|
return TRUE;
|
681 |
|
|
|
682 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
683 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
684 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
685 |
|
|
|
686 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
687 |
|
|
local_got_offsets = elf_local_got_offsets (abfd);
|
688 |
|
|
rel_end = relocs + sec->reloc_count;
|
689 |
|
|
sym_diff_reloc_seen = FALSE;
|
690 |
|
|
|
691 |
|
|
for (rel = relocs; rel < rel_end; rel++)
|
692 |
|
|
{
|
693 |
|
|
struct elf_link_hash_entry *h;
|
694 |
|
|
unsigned long r_symndx;
|
695 |
|
|
unsigned int r_type;
|
696 |
|
|
|
697 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
698 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
699 |
|
|
h = NULL;
|
700 |
|
|
else
|
701 |
|
|
{
|
702 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
703 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
704 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
705 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
706 |
|
|
}
|
707 |
|
|
|
708 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
709 |
|
|
|
710 |
|
|
/* Some relocs require a global offset table. */
|
711 |
|
|
if (dynobj == NULL)
|
712 |
|
|
{
|
713 |
|
|
switch (r_type)
|
714 |
|
|
{
|
715 |
|
|
case R_MN10300_GOT32:
|
716 |
|
|
case R_MN10300_GOT24:
|
717 |
|
|
case R_MN10300_GOT16:
|
718 |
|
|
case R_MN10300_GOTOFF32:
|
719 |
|
|
case R_MN10300_GOTOFF24:
|
720 |
|
|
case R_MN10300_GOTOFF16:
|
721 |
|
|
case R_MN10300_GOTPC32:
|
722 |
|
|
case R_MN10300_GOTPC16:
|
723 |
|
|
elf_hash_table (info)->dynobj = dynobj = abfd;
|
724 |
|
|
if (! _bfd_mn10300_elf_create_got_section (dynobj, info))
|
725 |
|
|
goto fail;
|
726 |
|
|
break;
|
727 |
|
|
|
728 |
|
|
default:
|
729 |
|
|
break;
|
730 |
|
|
}
|
731 |
|
|
}
|
732 |
|
|
|
733 |
|
|
switch (r_type)
|
734 |
|
|
{
|
735 |
|
|
/* This relocation describes the C++ object vtable hierarchy.
|
736 |
|
|
Reconstruct it for later use during GC. */
|
737 |
|
|
case R_MN10300_GNU_VTINHERIT:
|
738 |
|
|
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
739 |
|
|
goto fail;
|
740 |
|
|
break;
|
741 |
|
|
|
742 |
|
|
/* This relocation describes which C++ vtable entries are actually
|
743 |
|
|
used. Record for later use during GC. */
|
744 |
|
|
case R_MN10300_GNU_VTENTRY:
|
745 |
|
|
BFD_ASSERT (h != NULL);
|
746 |
|
|
if (h != NULL
|
747 |
|
|
&& !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
748 |
|
|
goto fail;
|
749 |
|
|
break;
|
750 |
|
|
|
751 |
|
|
case R_MN10300_GOT32:
|
752 |
|
|
case R_MN10300_GOT24:
|
753 |
|
|
case R_MN10300_GOT16:
|
754 |
|
|
/* This symbol requires a global offset table entry. */
|
755 |
|
|
|
756 |
|
|
if (sgot == NULL)
|
757 |
|
|
{
|
758 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got");
|
759 |
|
|
BFD_ASSERT (sgot != NULL);
|
760 |
|
|
}
|
761 |
|
|
|
762 |
|
|
if (srelgot == NULL
|
763 |
|
|
&& (h != NULL || info->shared))
|
764 |
|
|
{
|
765 |
|
|
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
|
766 |
|
|
if (srelgot == NULL)
|
767 |
|
|
{
|
768 |
|
|
srelgot = bfd_make_section_with_flags (dynobj,
|
769 |
|
|
".rela.got",
|
770 |
|
|
(SEC_ALLOC
|
771 |
|
|
| SEC_LOAD
|
772 |
|
|
| SEC_HAS_CONTENTS
|
773 |
|
|
| SEC_IN_MEMORY
|
774 |
|
|
| SEC_LINKER_CREATED
|
775 |
|
|
| SEC_READONLY));
|
776 |
|
|
if (srelgot == NULL
|
777 |
|
|
|| ! bfd_set_section_alignment (dynobj, srelgot, 2))
|
778 |
|
|
goto fail;
|
779 |
|
|
}
|
780 |
|
|
}
|
781 |
|
|
|
782 |
|
|
if (h != NULL)
|
783 |
|
|
{
|
784 |
|
|
if (h->got.offset != (bfd_vma) -1)
|
785 |
|
|
/* We have already allocated space in the .got. */
|
786 |
|
|
break;
|
787 |
|
|
|
788 |
|
|
h->got.offset = sgot->size;
|
789 |
|
|
|
790 |
|
|
/* Make sure this symbol is output as a dynamic symbol. */
|
791 |
|
|
if (h->dynindx == -1)
|
792 |
|
|
{
|
793 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
794 |
|
|
goto fail;
|
795 |
|
|
}
|
796 |
|
|
|
797 |
|
|
srelgot->size += sizeof (Elf32_External_Rela);
|
798 |
|
|
}
|
799 |
|
|
else
|
800 |
|
|
{
|
801 |
|
|
/* This is a global offset table entry for a local
|
802 |
|
|
symbol. */
|
803 |
|
|
if (local_got_offsets == NULL)
|
804 |
|
|
{
|
805 |
|
|
size_t size;
|
806 |
|
|
unsigned int i;
|
807 |
|
|
|
808 |
|
|
size = symtab_hdr->sh_info * sizeof (bfd_vma);
|
809 |
|
|
local_got_offsets = bfd_alloc (abfd, size);
|
810 |
|
|
|
811 |
|
|
if (local_got_offsets == NULL)
|
812 |
|
|
goto fail;
|
813 |
|
|
|
814 |
|
|
elf_local_got_offsets (abfd) = local_got_offsets;
|
815 |
|
|
|
816 |
|
|
for (i = 0; i < symtab_hdr->sh_info; i++)
|
817 |
|
|
local_got_offsets[i] = (bfd_vma) -1;
|
818 |
|
|
}
|
819 |
|
|
|
820 |
|
|
if (local_got_offsets[r_symndx] != (bfd_vma) -1)
|
821 |
|
|
/* We have already allocated space in the .got. */
|
822 |
|
|
break;
|
823 |
|
|
|
824 |
|
|
local_got_offsets[r_symndx] = sgot->size;
|
825 |
|
|
|
826 |
|
|
if (info->shared)
|
827 |
|
|
/* If we are generating a shared object, we need to
|
828 |
|
|
output a R_MN10300_RELATIVE reloc so that the dynamic
|
829 |
|
|
linker can adjust this GOT entry. */
|
830 |
|
|
srelgot->size += sizeof (Elf32_External_Rela);
|
831 |
|
|
}
|
832 |
|
|
|
833 |
|
|
sgot->size += 4;
|
834 |
|
|
break;
|
835 |
|
|
|
836 |
|
|
case R_MN10300_PLT32:
|
837 |
|
|
case R_MN10300_PLT16:
|
838 |
|
|
/* This symbol requires a procedure linkage table entry. We
|
839 |
|
|
actually build the entry in adjust_dynamic_symbol,
|
840 |
|
|
because this might be a case of linking PIC code which is
|
841 |
|
|
never referenced by a dynamic object, in which case we
|
842 |
|
|
don't need to generate a procedure linkage table entry
|
843 |
|
|
after all. */
|
844 |
|
|
|
845 |
|
|
/* If this is a local symbol, we resolve it directly without
|
846 |
|
|
creating a procedure linkage table entry. */
|
847 |
|
|
if (h == NULL)
|
848 |
|
|
continue;
|
849 |
|
|
|
850 |
|
|
if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
|
851 |
|
|
|| ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)
|
852 |
|
|
break;
|
853 |
|
|
|
854 |
|
|
h->needs_plt = 1;
|
855 |
|
|
break;
|
856 |
|
|
|
857 |
|
|
case R_MN10300_24:
|
858 |
|
|
case R_MN10300_16:
|
859 |
|
|
case R_MN10300_8:
|
860 |
|
|
case R_MN10300_PCREL32:
|
861 |
|
|
case R_MN10300_PCREL16:
|
862 |
|
|
case R_MN10300_PCREL8:
|
863 |
|
|
if (h != NULL)
|
864 |
|
|
h->non_got_ref = 1;
|
865 |
|
|
break;
|
866 |
|
|
|
867 |
|
|
case R_MN10300_SYM_DIFF:
|
868 |
|
|
sym_diff_reloc_seen = TRUE;
|
869 |
|
|
break;
|
870 |
|
|
|
871 |
|
|
case R_MN10300_32:
|
872 |
|
|
if (h != NULL)
|
873 |
|
|
h->non_got_ref = 1;
|
874 |
|
|
|
875 |
|
|
/* If we are creating a shared library, then we
|
876 |
|
|
need to copy the reloc into the shared library. */
|
877 |
|
|
if (info->shared
|
878 |
|
|
&& (sec->flags & SEC_ALLOC) != 0
|
879 |
|
|
/* Do not generate a dynamic reloc for a
|
880 |
|
|
reloc associated with a SYM_DIFF operation. */
|
881 |
|
|
&& ! sym_diff_reloc_seen)
|
882 |
|
|
{
|
883 |
|
|
asection * sym_section = NULL;
|
884 |
|
|
|
885 |
|
|
/* Find the section containing the
|
886 |
|
|
symbol involved in the relocation. */
|
887 |
|
|
if (h == NULL)
|
888 |
|
|
{
|
889 |
|
|
Elf_Internal_Sym * isym;
|
890 |
|
|
|
891 |
|
|
if (isymbuf == NULL)
|
892 |
|
|
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
|
893 |
|
|
symtab_hdr->sh_info, 0,
|
894 |
|
|
NULL, NULL, NULL);
|
895 |
|
|
if (isymbuf)
|
896 |
|
|
{
|
897 |
|
|
isym = isymbuf + r_symndx;
|
898 |
|
|
/* All we care about is whether this local symbol is absolute. */
|
899 |
|
|
if (isym->st_shndx == SHN_ABS)
|
900 |
|
|
sym_section = bfd_abs_section_ptr;
|
901 |
|
|
}
|
902 |
|
|
}
|
903 |
|
|
else
|
904 |
|
|
{
|
905 |
|
|
if (h->root.type == bfd_link_hash_defined
|
906 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
907 |
|
|
sym_section = h->root.u.def.section;
|
908 |
|
|
}
|
909 |
|
|
|
910 |
|
|
/* If the symbol is absolute then the relocation can
|
911 |
|
|
be resolved during linking and there is no need for
|
912 |
|
|
a dynamic reloc. */
|
913 |
|
|
if (sym_section != bfd_abs_section_ptr)
|
914 |
|
|
{
|
915 |
|
|
/* When creating a shared object, we must copy these
|
916 |
|
|
reloc types into the output file. We create a reloc
|
917 |
|
|
section in dynobj and make room for this reloc. */
|
918 |
|
|
if (sreloc == NULL)
|
919 |
|
|
{
|
920 |
|
|
sreloc = _bfd_elf_make_dynamic_reloc_section
|
921 |
|
|
(sec, dynobj, 2, abfd, /*rela?*/ TRUE);
|
922 |
|
|
if (sreloc == NULL)
|
923 |
|
|
goto fail;
|
924 |
|
|
}
|
925 |
|
|
|
926 |
|
|
sreloc->size += sizeof (Elf32_External_Rela);
|
927 |
|
|
}
|
928 |
|
|
}
|
929 |
|
|
|
930 |
|
|
break;
|
931 |
|
|
}
|
932 |
|
|
|
933 |
|
|
if (ELF32_R_TYPE (rel->r_info) != R_MN10300_SYM_DIFF)
|
934 |
|
|
sym_diff_reloc_seen = FALSE;
|
935 |
|
|
}
|
936 |
|
|
|
937 |
|
|
result = TRUE;
|
938 |
|
|
fail:
|
939 |
|
|
if (isymbuf != NULL)
|
940 |
|
|
free (isymbuf);
|
941 |
|
|
|
942 |
|
|
return result;
|
943 |
|
|
}
|
944 |
|
|
|
945 |
|
|
/* Return the section that should be marked against GC for a given
|
946 |
|
|
relocation. */
|
947 |
|
|
|
948 |
|
|
static asection *
|
949 |
|
|
mn10300_elf_gc_mark_hook (asection *sec,
|
950 |
|
|
struct bfd_link_info *info,
|
951 |
|
|
Elf_Internal_Rela *rel,
|
952 |
|
|
struct elf_link_hash_entry *h,
|
953 |
|
|
Elf_Internal_Sym *sym)
|
954 |
|
|
{
|
955 |
|
|
if (h != NULL)
|
956 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
957 |
|
|
{
|
958 |
|
|
case R_MN10300_GNU_VTINHERIT:
|
959 |
|
|
case R_MN10300_GNU_VTENTRY:
|
960 |
|
|
return NULL;
|
961 |
|
|
}
|
962 |
|
|
|
963 |
|
|
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
964 |
|
|
}
|
965 |
|
|
|
966 |
|
|
/* Perform a relocation as part of a final link. */
|
967 |
|
|
|
968 |
|
|
static bfd_reloc_status_type
|
969 |
|
|
mn10300_elf_final_link_relocate (reloc_howto_type *howto,
|
970 |
|
|
bfd *input_bfd,
|
971 |
|
|
bfd *output_bfd ATTRIBUTE_UNUSED,
|
972 |
|
|
asection *input_section,
|
973 |
|
|
bfd_byte *contents,
|
974 |
|
|
bfd_vma offset,
|
975 |
|
|
bfd_vma value,
|
976 |
|
|
bfd_vma addend,
|
977 |
|
|
struct elf_link_hash_entry * h,
|
978 |
|
|
unsigned long symndx,
|
979 |
|
|
struct bfd_link_info *info,
|
980 |
|
|
asection *sym_sec ATTRIBUTE_UNUSED,
|
981 |
|
|
int is_local ATTRIBUTE_UNUSED)
|
982 |
|
|
{
|
983 |
|
|
static asection * sym_diff_section;
|
984 |
|
|
static bfd_vma sym_diff_value;
|
985 |
|
|
bfd_boolean is_sym_diff_reloc;
|
986 |
|
|
unsigned long r_type = howto->type;
|
987 |
|
|
bfd_byte * hit_data = contents + offset;
|
988 |
|
|
bfd * dynobj;
|
989 |
|
|
bfd_vma * local_got_offsets;
|
990 |
|
|
asection * sgot;
|
991 |
|
|
asection * splt;
|
992 |
|
|
asection * sreloc;
|
993 |
|
|
|
994 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
995 |
|
|
local_got_offsets = elf_local_got_offsets (input_bfd);
|
996 |
|
|
|
997 |
|
|
sgot = NULL;
|
998 |
|
|
splt = NULL;
|
999 |
|
|
sreloc = NULL;
|
1000 |
|
|
|
1001 |
|
|
switch (r_type)
|
1002 |
|
|
{
|
1003 |
|
|
case R_MN10300_24:
|
1004 |
|
|
case R_MN10300_16:
|
1005 |
|
|
case R_MN10300_8:
|
1006 |
|
|
case R_MN10300_PCREL8:
|
1007 |
|
|
case R_MN10300_PCREL16:
|
1008 |
|
|
case R_MN10300_PCREL32:
|
1009 |
|
|
case R_MN10300_GOTOFF32:
|
1010 |
|
|
case R_MN10300_GOTOFF24:
|
1011 |
|
|
case R_MN10300_GOTOFF16:
|
1012 |
|
|
if (info->shared
|
1013 |
|
|
&& (input_section->flags & SEC_ALLOC) != 0
|
1014 |
|
|
&& h != NULL
|
1015 |
|
|
&& ! SYMBOL_REFERENCES_LOCAL (info, h))
|
1016 |
|
|
return bfd_reloc_dangerous;
|
1017 |
|
|
}
|
1018 |
|
|
|
1019 |
|
|
is_sym_diff_reloc = FALSE;
|
1020 |
|
|
if (sym_diff_section != NULL)
|
1021 |
|
|
{
|
1022 |
|
|
BFD_ASSERT (sym_diff_section == input_section);
|
1023 |
|
|
|
1024 |
|
|
switch (r_type)
|
1025 |
|
|
{
|
1026 |
|
|
case R_MN10300_32:
|
1027 |
|
|
case R_MN10300_24:
|
1028 |
|
|
case R_MN10300_16:
|
1029 |
|
|
case R_MN10300_8:
|
1030 |
|
|
value -= sym_diff_value;
|
1031 |
|
|
/* If we are computing a 32-bit value for the location lists
|
1032 |
|
|
and the result is 0 then we add one to the value. A zero
|
1033 |
|
|
value can result because of linker relaxation deleteing
|
1034 |
|
|
prologue instructions and using a value of 1 (for the begin
|
1035 |
|
|
and end offsets in the location list entry) results in a
|
1036 |
|
|
nul entry which does not prevent the following entries from
|
1037 |
|
|
being parsed. */
|
1038 |
|
|
if (r_type == R_MN10300_32
|
1039 |
|
|
&& value == 0
|
1040 |
|
|
&& strcmp (input_section->name, ".debug_loc") == 0)
|
1041 |
|
|
value = 1;
|
1042 |
|
|
sym_diff_section = NULL;
|
1043 |
|
|
is_sym_diff_reloc = TRUE;
|
1044 |
|
|
break;
|
1045 |
|
|
|
1046 |
|
|
default:
|
1047 |
|
|
sym_diff_section = NULL;
|
1048 |
|
|
break;
|
1049 |
|
|
}
|
1050 |
|
|
}
|
1051 |
|
|
|
1052 |
|
|
switch (r_type)
|
1053 |
|
|
{
|
1054 |
|
|
case R_MN10300_SYM_DIFF:
|
1055 |
|
|
BFD_ASSERT (addend == 0);
|
1056 |
|
|
/* Cache the input section and value.
|
1057 |
|
|
The offset is unreliable, since relaxation may
|
1058 |
|
|
have reduced the following reloc's offset. */
|
1059 |
|
|
sym_diff_section = input_section;
|
1060 |
|
|
sym_diff_value = value;
|
1061 |
|
|
return bfd_reloc_ok;
|
1062 |
|
|
|
1063 |
|
|
case R_MN10300_ALIGN:
|
1064 |
|
|
case R_MN10300_NONE:
|
1065 |
|
|
return bfd_reloc_ok;
|
1066 |
|
|
|
1067 |
|
|
case R_MN10300_32:
|
1068 |
|
|
if (info->shared
|
1069 |
|
|
/* Do not generate relocs when an R_MN10300_32 has been used
|
1070 |
|
|
with an R_MN10300_SYM_DIFF to compute a difference of two
|
1071 |
|
|
symbols. */
|
1072 |
|
|
&& is_sym_diff_reloc == FALSE
|
1073 |
|
|
/* Also, do not generate a reloc when the symbol associated
|
1074 |
|
|
with the R_MN10300_32 reloc is absolute - there is no
|
1075 |
|
|
need for a run time computation in this case. */
|
1076 |
|
|
&& sym_sec != bfd_abs_section_ptr
|
1077 |
|
|
/* If the section is not going to be allocated at load time
|
1078 |
|
|
then there is no need to generate relocs for it. */
|
1079 |
|
|
&& (input_section->flags & SEC_ALLOC) != 0)
|
1080 |
|
|
{
|
1081 |
|
|
Elf_Internal_Rela outrel;
|
1082 |
|
|
bfd_boolean skip, relocate;
|
1083 |
|
|
|
1084 |
|
|
/* When generating a shared object, these relocations are
|
1085 |
|
|
copied into the output file to be resolved at run
|
1086 |
|
|
time. */
|
1087 |
|
|
if (sreloc == NULL)
|
1088 |
|
|
{
|
1089 |
|
|
sreloc = _bfd_elf_get_dynamic_reloc_section
|
1090 |
|
|
(input_bfd, input_section, /*rela?*/ TRUE);
|
1091 |
|
|
if (sreloc == NULL)
|
1092 |
|
|
return FALSE;
|
1093 |
|
|
}
|
1094 |
|
|
|
1095 |
|
|
skip = FALSE;
|
1096 |
|
|
|
1097 |
|
|
outrel.r_offset = _bfd_elf_section_offset (input_bfd, info,
|
1098 |
|
|
input_section, offset);
|
1099 |
|
|
if (outrel.r_offset == (bfd_vma) -1)
|
1100 |
|
|
skip = TRUE;
|
1101 |
|
|
|
1102 |
|
|
outrel.r_offset += (input_section->output_section->vma
|
1103 |
|
|
+ input_section->output_offset);
|
1104 |
|
|
|
1105 |
|
|
if (skip)
|
1106 |
|
|
{
|
1107 |
|
|
memset (&outrel, 0, sizeof outrel);
|
1108 |
|
|
relocate = FALSE;
|
1109 |
|
|
}
|
1110 |
|
|
else
|
1111 |
|
|
{
|
1112 |
|
|
/* h->dynindx may be -1 if this symbol was marked to
|
1113 |
|
|
become local. */
|
1114 |
|
|
if (h == NULL
|
1115 |
|
|
|| SYMBOL_REFERENCES_LOCAL (info, h))
|
1116 |
|
|
{
|
1117 |
|
|
relocate = TRUE;
|
1118 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
|
1119 |
|
|
outrel.r_addend = value + addend;
|
1120 |
|
|
}
|
1121 |
|
|
else
|
1122 |
|
|
{
|
1123 |
|
|
BFD_ASSERT (h->dynindx != -1);
|
1124 |
|
|
relocate = FALSE;
|
1125 |
|
|
outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32);
|
1126 |
|
|
outrel.r_addend = value + addend;
|
1127 |
|
|
}
|
1128 |
|
|
}
|
1129 |
|
|
|
1130 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &outrel,
|
1131 |
|
|
(bfd_byte *) (((Elf32_External_Rela *) sreloc->contents)
|
1132 |
|
|
+ sreloc->reloc_count));
|
1133 |
|
|
++sreloc->reloc_count;
|
1134 |
|
|
|
1135 |
|
|
/* If this reloc is against an external symbol, we do
|
1136 |
|
|
not want to fiddle with the addend. Otherwise, we
|
1137 |
|
|
need to include the symbol value so that it becomes
|
1138 |
|
|
an addend for the dynamic reloc. */
|
1139 |
|
|
if (! relocate)
|
1140 |
|
|
return bfd_reloc_ok;
|
1141 |
|
|
}
|
1142 |
|
|
value += addend;
|
1143 |
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
1144 |
|
|
return bfd_reloc_ok;
|
1145 |
|
|
|
1146 |
|
|
case R_MN10300_24:
|
1147 |
|
|
value += addend;
|
1148 |
|
|
|
1149 |
|
|
if ((long) value > 0x7fffff || (long) value < -0x800000)
|
1150 |
|
|
return bfd_reloc_overflow;
|
1151 |
|
|
|
1152 |
|
|
bfd_put_8 (input_bfd, value & 0xff, hit_data);
|
1153 |
|
|
bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
|
1154 |
|
|
bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
|
1155 |
|
|
return bfd_reloc_ok;
|
1156 |
|
|
|
1157 |
|
|
case R_MN10300_16:
|
1158 |
|
|
value += addend;
|
1159 |
|
|
|
1160 |
|
|
if ((long) value > 0x7fff || (long) value < -0x8000)
|
1161 |
|
|
return bfd_reloc_overflow;
|
1162 |
|
|
|
1163 |
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
1164 |
|
|
return bfd_reloc_ok;
|
1165 |
|
|
|
1166 |
|
|
case R_MN10300_8:
|
1167 |
|
|
value += addend;
|
1168 |
|
|
|
1169 |
|
|
if ((long) value > 0x7f || (long) value < -0x80)
|
1170 |
|
|
return bfd_reloc_overflow;
|
1171 |
|
|
|
1172 |
|
|
bfd_put_8 (input_bfd, value, hit_data);
|
1173 |
|
|
return bfd_reloc_ok;
|
1174 |
|
|
|
1175 |
|
|
case R_MN10300_PCREL8:
|
1176 |
|
|
value -= (input_section->output_section->vma
|
1177 |
|
|
+ input_section->output_offset);
|
1178 |
|
|
value -= offset;
|
1179 |
|
|
value += addend;
|
1180 |
|
|
|
1181 |
|
|
if ((long) value > 0x7f || (long) value < -0x80)
|
1182 |
|
|
return bfd_reloc_overflow;
|
1183 |
|
|
|
1184 |
|
|
bfd_put_8 (input_bfd, value, hit_data);
|
1185 |
|
|
return bfd_reloc_ok;
|
1186 |
|
|
|
1187 |
|
|
case R_MN10300_PCREL16:
|
1188 |
|
|
value -= (input_section->output_section->vma
|
1189 |
|
|
+ input_section->output_offset);
|
1190 |
|
|
value -= offset;
|
1191 |
|
|
value += addend;
|
1192 |
|
|
|
1193 |
|
|
if ((long) value > 0x7fff || (long) value < -0x8000)
|
1194 |
|
|
return bfd_reloc_overflow;
|
1195 |
|
|
|
1196 |
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
1197 |
|
|
return bfd_reloc_ok;
|
1198 |
|
|
|
1199 |
|
|
case R_MN10300_PCREL32:
|
1200 |
|
|
value -= (input_section->output_section->vma
|
1201 |
|
|
+ input_section->output_offset);
|
1202 |
|
|
value -= offset;
|
1203 |
|
|
value += addend;
|
1204 |
|
|
|
1205 |
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
1206 |
|
|
return bfd_reloc_ok;
|
1207 |
|
|
|
1208 |
|
|
case R_MN10300_GNU_VTINHERIT:
|
1209 |
|
|
case R_MN10300_GNU_VTENTRY:
|
1210 |
|
|
return bfd_reloc_ok;
|
1211 |
|
|
|
1212 |
|
|
case R_MN10300_GOTPC32:
|
1213 |
|
|
/* Use global offset table as symbol value. */
|
1214 |
|
|
value = bfd_get_section_by_name (dynobj,
|
1215 |
|
|
".got")->output_section->vma;
|
1216 |
|
|
value -= (input_section->output_section->vma
|
1217 |
|
|
+ input_section->output_offset);
|
1218 |
|
|
value -= offset;
|
1219 |
|
|
value += addend;
|
1220 |
|
|
|
1221 |
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
1222 |
|
|
return bfd_reloc_ok;
|
1223 |
|
|
|
1224 |
|
|
case R_MN10300_GOTPC16:
|
1225 |
|
|
/* Use global offset table as symbol value. */
|
1226 |
|
|
value = bfd_get_section_by_name (dynobj,
|
1227 |
|
|
".got")->output_section->vma;
|
1228 |
|
|
value -= (input_section->output_section->vma
|
1229 |
|
|
+ input_section->output_offset);
|
1230 |
|
|
value -= offset;
|
1231 |
|
|
value += addend;
|
1232 |
|
|
|
1233 |
|
|
if ((long) value > 0x7fff || (long) value < -0x8000)
|
1234 |
|
|
return bfd_reloc_overflow;
|
1235 |
|
|
|
1236 |
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
1237 |
|
|
return bfd_reloc_ok;
|
1238 |
|
|
|
1239 |
|
|
case R_MN10300_GOTOFF32:
|
1240 |
|
|
value -= bfd_get_section_by_name (dynobj,
|
1241 |
|
|
".got")->output_section->vma;
|
1242 |
|
|
value += addend;
|
1243 |
|
|
|
1244 |
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
1245 |
|
|
return bfd_reloc_ok;
|
1246 |
|
|
|
1247 |
|
|
case R_MN10300_GOTOFF24:
|
1248 |
|
|
value -= bfd_get_section_by_name (dynobj,
|
1249 |
|
|
".got")->output_section->vma;
|
1250 |
|
|
value += addend;
|
1251 |
|
|
|
1252 |
|
|
if ((long) value > 0x7fffff || (long) value < -0x800000)
|
1253 |
|
|
return bfd_reloc_overflow;
|
1254 |
|
|
|
1255 |
|
|
bfd_put_8 (input_bfd, value, hit_data);
|
1256 |
|
|
bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
|
1257 |
|
|
bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
|
1258 |
|
|
return bfd_reloc_ok;
|
1259 |
|
|
|
1260 |
|
|
case R_MN10300_GOTOFF16:
|
1261 |
|
|
value -= bfd_get_section_by_name (dynobj,
|
1262 |
|
|
".got")->output_section->vma;
|
1263 |
|
|
value += addend;
|
1264 |
|
|
|
1265 |
|
|
if ((long) value > 0x7fff || (long) value < -0x8000)
|
1266 |
|
|
return bfd_reloc_overflow;
|
1267 |
|
|
|
1268 |
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
1269 |
|
|
return bfd_reloc_ok;
|
1270 |
|
|
|
1271 |
|
|
case R_MN10300_PLT32:
|
1272 |
|
|
if (h != NULL
|
1273 |
|
|
&& ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
|
1274 |
|
|
&& ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
|
1275 |
|
|
&& h->plt.offset != (bfd_vma) -1)
|
1276 |
|
|
{
|
1277 |
|
|
asection * splt;
|
1278 |
|
|
|
1279 |
|
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
1280 |
|
|
|
1281 |
|
|
value = (splt->output_section->vma
|
1282 |
|
|
+ splt->output_offset
|
1283 |
|
|
+ h->plt.offset) - value;
|
1284 |
|
|
}
|
1285 |
|
|
|
1286 |
|
|
value -= (input_section->output_section->vma
|
1287 |
|
|
+ input_section->output_offset);
|
1288 |
|
|
value -= offset;
|
1289 |
|
|
value += addend;
|
1290 |
|
|
|
1291 |
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
1292 |
|
|
return bfd_reloc_ok;
|
1293 |
|
|
|
1294 |
|
|
case R_MN10300_PLT16:
|
1295 |
|
|
if (h != NULL
|
1296 |
|
|
&& ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
|
1297 |
|
|
&& ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
|
1298 |
|
|
&& h->plt.offset != (bfd_vma) -1)
|
1299 |
|
|
{
|
1300 |
|
|
asection * splt;
|
1301 |
|
|
|
1302 |
|
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
1303 |
|
|
|
1304 |
|
|
value = (splt->output_section->vma
|
1305 |
|
|
+ splt->output_offset
|
1306 |
|
|
+ h->plt.offset) - value;
|
1307 |
|
|
}
|
1308 |
|
|
|
1309 |
|
|
value -= (input_section->output_section->vma
|
1310 |
|
|
+ input_section->output_offset);
|
1311 |
|
|
value -= offset;
|
1312 |
|
|
value += addend;
|
1313 |
|
|
|
1314 |
|
|
if ((long) value > 0x7fff || (long) value < -0x8000)
|
1315 |
|
|
return bfd_reloc_overflow;
|
1316 |
|
|
|
1317 |
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
1318 |
|
|
return bfd_reloc_ok;
|
1319 |
|
|
|
1320 |
|
|
case R_MN10300_GOT32:
|
1321 |
|
|
case R_MN10300_GOT24:
|
1322 |
|
|
case R_MN10300_GOT16:
|
1323 |
|
|
{
|
1324 |
|
|
asection * sgot;
|
1325 |
|
|
|
1326 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got");
|
1327 |
|
|
|
1328 |
|
|
if (h != NULL)
|
1329 |
|
|
{
|
1330 |
|
|
bfd_vma off;
|
1331 |
|
|
|
1332 |
|
|
off = h->got.offset;
|
1333 |
|
|
BFD_ASSERT (off != (bfd_vma) -1);
|
1334 |
|
|
|
1335 |
|
|
if (! elf_hash_table (info)->dynamic_sections_created
|
1336 |
|
|
|| SYMBOL_REFERENCES_LOCAL (info, h))
|
1337 |
|
|
/* This is actually a static link, or it is a
|
1338 |
|
|
-Bsymbolic link and the symbol is defined
|
1339 |
|
|
locally, or the symbol was forced to be local
|
1340 |
|
|
because of a version file. We must initialize
|
1341 |
|
|
this entry in the global offset table.
|
1342 |
|
|
|
1343 |
|
|
When doing a dynamic link, we create a .rela.got
|
1344 |
|
|
relocation entry to initialize the value. This
|
1345 |
|
|
is done in the finish_dynamic_symbol routine. */
|
1346 |
|
|
bfd_put_32 (output_bfd, value,
|
1347 |
|
|
sgot->contents + off);
|
1348 |
|
|
|
1349 |
|
|
value = sgot->output_offset + off;
|
1350 |
|
|
}
|
1351 |
|
|
else
|
1352 |
|
|
{
|
1353 |
|
|
bfd_vma off;
|
1354 |
|
|
|
1355 |
|
|
off = elf_local_got_offsets (input_bfd)[symndx];
|
1356 |
|
|
|
1357 |
|
|
bfd_put_32 (output_bfd, value, sgot->contents + off);
|
1358 |
|
|
|
1359 |
|
|
if (info->shared)
|
1360 |
|
|
{
|
1361 |
|
|
asection * srelgot;
|
1362 |
|
|
Elf_Internal_Rela outrel;
|
1363 |
|
|
|
1364 |
|
|
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
|
1365 |
|
|
BFD_ASSERT (srelgot != NULL);
|
1366 |
|
|
|
1367 |
|
|
outrel.r_offset = (sgot->output_section->vma
|
1368 |
|
|
+ sgot->output_offset
|
1369 |
|
|
+ off);
|
1370 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
|
1371 |
|
|
outrel.r_addend = value;
|
1372 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &outrel,
|
1373 |
|
|
(bfd_byte *) (((Elf32_External_Rela *)
|
1374 |
|
|
srelgot->contents)
|
1375 |
|
|
+ srelgot->reloc_count));
|
1376 |
|
|
++ srelgot->reloc_count;
|
1377 |
|
|
}
|
1378 |
|
|
|
1379 |
|
|
value = sgot->output_offset + off;
|
1380 |
|
|
}
|
1381 |
|
|
}
|
1382 |
|
|
|
1383 |
|
|
value += addend;
|
1384 |
|
|
|
1385 |
|
|
if (r_type == R_MN10300_GOT32)
|
1386 |
|
|
{
|
1387 |
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
1388 |
|
|
return bfd_reloc_ok;
|
1389 |
|
|
}
|
1390 |
|
|
else if (r_type == R_MN10300_GOT24)
|
1391 |
|
|
{
|
1392 |
|
|
if ((long) value > 0x7fffff || (long) value < -0x800000)
|
1393 |
|
|
return bfd_reloc_overflow;
|
1394 |
|
|
|
1395 |
|
|
bfd_put_8 (input_bfd, value & 0xff, hit_data);
|
1396 |
|
|
bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
|
1397 |
|
|
bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
|
1398 |
|
|
return bfd_reloc_ok;
|
1399 |
|
|
}
|
1400 |
|
|
else if (r_type == R_MN10300_GOT16)
|
1401 |
|
|
{
|
1402 |
|
|
if ((long) value > 0x7fff || (long) value < -0x8000)
|
1403 |
|
|
return bfd_reloc_overflow;
|
1404 |
|
|
|
1405 |
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
1406 |
|
|
return bfd_reloc_ok;
|
1407 |
|
|
}
|
1408 |
|
|
/* Fall through. */
|
1409 |
|
|
|
1410 |
|
|
default:
|
1411 |
|
|
return bfd_reloc_notsupported;
|
1412 |
|
|
}
|
1413 |
|
|
}
|
1414 |
|
|
|
1415 |
|
|
/* Relocate an MN10300 ELF section. */
|
1416 |
|
|
|
1417 |
|
|
static bfd_boolean
|
1418 |
|
|
mn10300_elf_relocate_section (bfd *output_bfd,
|
1419 |
|
|
struct bfd_link_info *info,
|
1420 |
|
|
bfd *input_bfd,
|
1421 |
|
|
asection *input_section,
|
1422 |
|
|
bfd_byte *contents,
|
1423 |
|
|
Elf_Internal_Rela *relocs,
|
1424 |
|
|
Elf_Internal_Sym *local_syms,
|
1425 |
|
|
asection **local_sections)
|
1426 |
|
|
{
|
1427 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
1428 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
1429 |
|
|
Elf_Internal_Rela *rel, *relend;
|
1430 |
|
|
|
1431 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
1432 |
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
1433 |
|
|
|
1434 |
|
|
rel = relocs;
|
1435 |
|
|
relend = relocs + input_section->reloc_count;
|
1436 |
|
|
for (; rel < relend; rel++)
|
1437 |
|
|
{
|
1438 |
|
|
int r_type;
|
1439 |
|
|
reloc_howto_type *howto;
|
1440 |
|
|
unsigned long r_symndx;
|
1441 |
|
|
Elf_Internal_Sym *sym;
|
1442 |
|
|
asection *sec;
|
1443 |
|
|
struct elf32_mn10300_link_hash_entry *h;
|
1444 |
|
|
bfd_vma relocation;
|
1445 |
|
|
bfd_reloc_status_type r;
|
1446 |
|
|
|
1447 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
1448 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
1449 |
|
|
howto = elf_mn10300_howto_table + r_type;
|
1450 |
|
|
|
1451 |
|
|
/* Just skip the vtable gc relocs. */
|
1452 |
|
|
if (r_type == R_MN10300_GNU_VTINHERIT
|
1453 |
|
|
|| r_type == R_MN10300_GNU_VTENTRY)
|
1454 |
|
|
continue;
|
1455 |
|
|
|
1456 |
|
|
h = NULL;
|
1457 |
|
|
sym = NULL;
|
1458 |
|
|
sec = NULL;
|
1459 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
1460 |
|
|
{
|
1461 |
|
|
sym = local_syms + r_symndx;
|
1462 |
|
|
sec = local_sections[r_symndx];
|
1463 |
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
1464 |
|
|
}
|
1465 |
|
|
else
|
1466 |
|
|
{
|
1467 |
|
|
bfd_boolean unresolved_reloc;
|
1468 |
|
|
bfd_boolean warned;
|
1469 |
|
|
struct elf_link_hash_entry *hh;
|
1470 |
|
|
|
1471 |
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
1472 |
|
|
r_symndx, symtab_hdr, sym_hashes,
|
1473 |
|
|
hh, sec, relocation,
|
1474 |
|
|
unresolved_reloc, warned);
|
1475 |
|
|
|
1476 |
|
|
h = (struct elf32_mn10300_link_hash_entry *) hh;
|
1477 |
|
|
|
1478 |
|
|
if ((h->root.root.type == bfd_link_hash_defined
|
1479 |
|
|
|| h->root.root.type == bfd_link_hash_defweak)
|
1480 |
|
|
&& ( r_type == R_MN10300_GOTPC32
|
1481 |
|
|
|| r_type == R_MN10300_GOTPC16
|
1482 |
|
|
|| (( r_type == R_MN10300_PLT32
|
1483 |
|
|
|| r_type == R_MN10300_PLT16)
|
1484 |
|
|
&& ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
|
1485 |
|
|
&& ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
|
1486 |
|
|
&& h->root.plt.offset != (bfd_vma) -1)
|
1487 |
|
|
|| (( r_type == R_MN10300_GOT32
|
1488 |
|
|
|| r_type == R_MN10300_GOT24
|
1489 |
|
|
|| r_type == R_MN10300_GOT16)
|
1490 |
|
|
&& elf_hash_table (info)->dynamic_sections_created
|
1491 |
|
|
&& !SYMBOL_REFERENCES_LOCAL (info, hh))
|
1492 |
|
|
|| (r_type == R_MN10300_32
|
1493 |
|
|
/* _32 relocs in executables force _COPY relocs,
|
1494 |
|
|
such that the address of the symbol ends up
|
1495 |
|
|
being local. */
|
1496 |
|
|
&& !info->executable
|
1497 |
|
|
&& !SYMBOL_REFERENCES_LOCAL (info, hh)
|
1498 |
|
|
&& ((input_section->flags & SEC_ALLOC) != 0
|
1499 |
|
|
/* DWARF will emit R_MN10300_32 relocations
|
1500 |
|
|
in its sections against symbols defined
|
1501 |
|
|
externally in shared libraries. We can't
|
1502 |
|
|
do anything with them here. */
|
1503 |
|
|
|| ((input_section->flags & SEC_DEBUGGING) != 0
|
1504 |
|
|
&& h->root.def_dynamic)))))
|
1505 |
|
|
/* In these cases, we don't need the relocation
|
1506 |
|
|
value. We check specially because in some
|
1507 |
|
|
obscure cases sec->output_section will be NULL. */
|
1508 |
|
|
relocation = 0;
|
1509 |
|
|
|
1510 |
|
|
else if (!info->relocatable && unresolved_reloc)
|
1511 |
|
|
(*_bfd_error_handler)
|
1512 |
|
|
(_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
|
1513 |
|
|
input_bfd,
|
1514 |
|
|
input_section,
|
1515 |
|
|
(long) rel->r_offset,
|
1516 |
|
|
howto->name,
|
1517 |
|
|
h->root.root.root.string);
|
1518 |
|
|
}
|
1519 |
|
|
|
1520 |
|
|
if (sec != NULL && elf_discarded_section (sec))
|
1521 |
|
|
{
|
1522 |
|
|
/* For relocs against symbols from removed linkonce sections,
|
1523 |
|
|
or sections discarded by a linker script, we just want the
|
1524 |
|
|
section contents zeroed. Avoid any special processing. */
|
1525 |
|
|
_bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
|
1526 |
|
|
rel->r_info = 0;
|
1527 |
|
|
rel->r_addend = 0;
|
1528 |
|
|
continue;
|
1529 |
|
|
}
|
1530 |
|
|
|
1531 |
|
|
if (info->relocatable)
|
1532 |
|
|
continue;
|
1533 |
|
|
|
1534 |
|
|
r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
|
1535 |
|
|
input_section,
|
1536 |
|
|
contents, rel->r_offset,
|
1537 |
|
|
relocation, rel->r_addend,
|
1538 |
|
|
(struct elf_link_hash_entry *) h,
|
1539 |
|
|
r_symndx,
|
1540 |
|
|
info, sec, h == NULL);
|
1541 |
|
|
|
1542 |
|
|
if (r != bfd_reloc_ok)
|
1543 |
|
|
{
|
1544 |
|
|
const char *name;
|
1545 |
|
|
const char *msg = NULL;
|
1546 |
|
|
|
1547 |
|
|
if (h != NULL)
|
1548 |
|
|
name = h->root.root.root.string;
|
1549 |
|
|
else
|
1550 |
|
|
{
|
1551 |
|
|
name = (bfd_elf_string_from_elf_section
|
1552 |
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name));
|
1553 |
|
|
if (name == NULL || *name == '\0')
|
1554 |
|
|
name = bfd_section_name (input_bfd, sec);
|
1555 |
|
|
}
|
1556 |
|
|
|
1557 |
|
|
switch (r)
|
1558 |
|
|
{
|
1559 |
|
|
case bfd_reloc_overflow:
|
1560 |
|
|
if (! ((*info->callbacks->reloc_overflow)
|
1561 |
|
|
(info, (h ? &h->root.root : NULL), name,
|
1562 |
|
|
howto->name, (bfd_vma) 0, input_bfd,
|
1563 |
|
|
input_section, rel->r_offset)))
|
1564 |
|
|
return FALSE;
|
1565 |
|
|
break;
|
1566 |
|
|
|
1567 |
|
|
case bfd_reloc_undefined:
|
1568 |
|
|
if (! ((*info->callbacks->undefined_symbol)
|
1569 |
|
|
(info, name, input_bfd, input_section,
|
1570 |
|
|
rel->r_offset, TRUE)))
|
1571 |
|
|
return FALSE;
|
1572 |
|
|
break;
|
1573 |
|
|
|
1574 |
|
|
case bfd_reloc_outofrange:
|
1575 |
|
|
msg = _("internal error: out of range error");
|
1576 |
|
|
goto common_error;
|
1577 |
|
|
|
1578 |
|
|
case bfd_reloc_notsupported:
|
1579 |
|
|
msg = _("internal error: unsupported relocation error");
|
1580 |
|
|
goto common_error;
|
1581 |
|
|
|
1582 |
|
|
case bfd_reloc_dangerous:
|
1583 |
|
|
if (r_type == R_MN10300_PCREL32)
|
1584 |
|
|
msg = _("error: inappropriate relocation type for shared"
|
1585 |
|
|
" library (did you forget -fpic?)");
|
1586 |
|
|
else
|
1587 |
|
|
msg = _("internal error: suspicious relocation type used"
|
1588 |
|
|
" in shared library");
|
1589 |
|
|
goto common_error;
|
1590 |
|
|
|
1591 |
|
|
default:
|
1592 |
|
|
msg = _("internal error: unknown error");
|
1593 |
|
|
/* Fall through. */
|
1594 |
|
|
|
1595 |
|
|
common_error:
|
1596 |
|
|
if (!((*info->callbacks->warning)
|
1597 |
|
|
(info, msg, name, input_bfd, input_section,
|
1598 |
|
|
rel->r_offset)))
|
1599 |
|
|
return FALSE;
|
1600 |
|
|
break;
|
1601 |
|
|
}
|
1602 |
|
|
}
|
1603 |
|
|
}
|
1604 |
|
|
|
1605 |
|
|
return TRUE;
|
1606 |
|
|
}
|
1607 |
|
|
|
1608 |
|
|
/* Finish initializing one hash table entry. */
|
1609 |
|
|
|
1610 |
|
|
static bfd_boolean
|
1611 |
|
|
elf32_mn10300_finish_hash_table_entry (struct bfd_hash_entry *gen_entry,
|
1612 |
|
|
void * in_args)
|
1613 |
|
|
{
|
1614 |
|
|
struct elf32_mn10300_link_hash_entry *entry;
|
1615 |
|
|
struct bfd_link_info *link_info = (struct bfd_link_info *) in_args;
|
1616 |
|
|
unsigned int byte_count = 0;
|
1617 |
|
|
|
1618 |
|
|
entry = (struct elf32_mn10300_link_hash_entry *) gen_entry;
|
1619 |
|
|
|
1620 |
|
|
if (entry->root.root.type == bfd_link_hash_warning)
|
1621 |
|
|
entry = (struct elf32_mn10300_link_hash_entry *) entry->root.root.u.i.link;
|
1622 |
|
|
|
1623 |
|
|
/* If we already know we want to convert "call" to "calls" for calls
|
1624 |
|
|
to this symbol, then return now. */
|
1625 |
|
|
if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS)
|
1626 |
|
|
return TRUE;
|
1627 |
|
|
|
1628 |
|
|
/* If there are no named calls to this symbol, or there's nothing we
|
1629 |
|
|
can move from the function itself into the "call" instruction,
|
1630 |
|
|
then note that all "call" instructions should be converted into
|
1631 |
|
|
"calls" instructions and return. If a symbol is available for
|
1632 |
|
|
dynamic symbol resolution (overridable or overriding), avoid
|
1633 |
|
|
custom calling conventions. */
|
1634 |
|
|
if (entry->direct_calls == 0
|
1635 |
|
|
|| (entry->stack_size == 0 && entry->movm_args == 0)
|
1636 |
|
|
|| (elf_hash_table (link_info)->dynamic_sections_created
|
1637 |
|
|
&& ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL
|
1638 |
|
|
&& ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN))
|
1639 |
|
|
{
|
1640 |
|
|
/* Make a note that we should convert "call" instructions to "calls"
|
1641 |
|
|
instructions for calls to this symbol. */
|
1642 |
|
|
entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
|
1643 |
|
|
return TRUE;
|
1644 |
|
|
}
|
1645 |
|
|
|
1646 |
|
|
/* We may be able to move some instructions from the function itself into
|
1647 |
|
|
the "call" instruction. Count how many bytes we might be able to
|
1648 |
|
|
eliminate in the function itself. */
|
1649 |
|
|
|
1650 |
|
|
/* A movm instruction is two bytes. */
|
1651 |
|
|
if (entry->movm_args)
|
1652 |
|
|
byte_count += 2;
|
1653 |
|
|
|
1654 |
|
|
/* Count the insn to allocate stack space too. */
|
1655 |
|
|
if (entry->stack_size > 0)
|
1656 |
|
|
{
|
1657 |
|
|
if (entry->stack_size <= 128)
|
1658 |
|
|
byte_count += 3;
|
1659 |
|
|
else
|
1660 |
|
|
byte_count += 4;
|
1661 |
|
|
}
|
1662 |
|
|
|
1663 |
|
|
/* If using "call" will result in larger code, then turn all
|
1664 |
|
|
the associated "call" instructions into "calls" instructions. */
|
1665 |
|
|
if (byte_count < entry->direct_calls)
|
1666 |
|
|
entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
|
1667 |
|
|
|
1668 |
|
|
/* This routine never fails. */
|
1669 |
|
|
return TRUE;
|
1670 |
|
|
}
|
1671 |
|
|
|
1672 |
|
|
/* Used to count hash table entries. */
|
1673 |
|
|
|
1674 |
|
|
static bfd_boolean
|
1675 |
|
|
elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry *gen_entry ATTRIBUTE_UNUSED,
|
1676 |
|
|
void * in_args)
|
1677 |
|
|
{
|
1678 |
|
|
int *count = (int *) in_args;
|
1679 |
|
|
|
1680 |
|
|
(*count) ++;
|
1681 |
|
|
return TRUE;
|
1682 |
|
|
}
|
1683 |
|
|
|
1684 |
|
|
/* Used to enumerate hash table entries into a linear array. */
|
1685 |
|
|
|
1686 |
|
|
static bfd_boolean
|
1687 |
|
|
elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry *gen_entry,
|
1688 |
|
|
void * in_args)
|
1689 |
|
|
{
|
1690 |
|
|
struct bfd_hash_entry ***ptr = (struct bfd_hash_entry ***) in_args;
|
1691 |
|
|
|
1692 |
|
|
**ptr = gen_entry;
|
1693 |
|
|
(*ptr) ++;
|
1694 |
|
|
return TRUE;
|
1695 |
|
|
}
|
1696 |
|
|
|
1697 |
|
|
/* Used to sort the array created by the above. */
|
1698 |
|
|
|
1699 |
|
|
static int
|
1700 |
|
|
sort_by_value (const void *va, const void *vb)
|
1701 |
|
|
{
|
1702 |
|
|
struct elf32_mn10300_link_hash_entry *a
|
1703 |
|
|
= *(struct elf32_mn10300_link_hash_entry **) va;
|
1704 |
|
|
struct elf32_mn10300_link_hash_entry *b
|
1705 |
|
|
= *(struct elf32_mn10300_link_hash_entry **) vb;
|
1706 |
|
|
|
1707 |
|
|
return a->value - b->value;
|
1708 |
|
|
}
|
1709 |
|
|
|
1710 |
|
|
/* Compute the stack size and movm arguments for the function
|
1711 |
|
|
referred to by HASH at address ADDR in section with
|
1712 |
|
|
contents CONTENTS, store the information in the hash table. */
|
1713 |
|
|
|
1714 |
|
|
static void
|
1715 |
|
|
compute_function_info (bfd *abfd,
|
1716 |
|
|
struct elf32_mn10300_link_hash_entry *hash,
|
1717 |
|
|
bfd_vma addr,
|
1718 |
|
|
unsigned char *contents)
|
1719 |
|
|
{
|
1720 |
|
|
unsigned char byte1, byte2;
|
1721 |
|
|
/* We only care about a very small subset of the possible prologue
|
1722 |
|
|
sequences here. Basically we look for:
|
1723 |
|
|
|
1724 |
|
|
movm [d2,d3,a2,a3],sp (optional)
|
1725 |
|
|
add <size>,sp (optional, and only for sizes which fit in an unsigned
|
1726 |
|
|
8 bit number)
|
1727 |
|
|
|
1728 |
|
|
If we find anything else, we quit. */
|
1729 |
|
|
|
1730 |
|
|
/* Look for movm [regs],sp. */
|
1731 |
|
|
byte1 = bfd_get_8 (abfd, contents + addr);
|
1732 |
|
|
byte2 = bfd_get_8 (abfd, contents + addr + 1);
|
1733 |
|
|
|
1734 |
|
|
if (byte1 == 0xcf)
|
1735 |
|
|
{
|
1736 |
|
|
hash->movm_args = byte2;
|
1737 |
|
|
addr += 2;
|
1738 |
|
|
byte1 = bfd_get_8 (abfd, contents + addr);
|
1739 |
|
|
byte2 = bfd_get_8 (abfd, contents + addr + 1);
|
1740 |
|
|
}
|
1741 |
|
|
|
1742 |
|
|
/* Now figure out how much stack space will be allocated by the movm
|
1743 |
|
|
instruction. We need this kept separate from the function's normal
|
1744 |
|
|
stack space. */
|
1745 |
|
|
if (hash->movm_args)
|
1746 |
|
|
{
|
1747 |
|
|
/* Space for d2. */
|
1748 |
|
|
if (hash->movm_args & 0x80)
|
1749 |
|
|
hash->movm_stack_size += 4;
|
1750 |
|
|
|
1751 |
|
|
/* Space for d3. */
|
1752 |
|
|
if (hash->movm_args & 0x40)
|
1753 |
|
|
hash->movm_stack_size += 4;
|
1754 |
|
|
|
1755 |
|
|
/* Space for a2. */
|
1756 |
|
|
if (hash->movm_args & 0x20)
|
1757 |
|
|
hash->movm_stack_size += 4;
|
1758 |
|
|
|
1759 |
|
|
/* Space for a3. */
|
1760 |
|
|
if (hash->movm_args & 0x10)
|
1761 |
|
|
hash->movm_stack_size += 4;
|
1762 |
|
|
|
1763 |
|
|
/* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */
|
1764 |
|
|
if (hash->movm_args & 0x08)
|
1765 |
|
|
hash->movm_stack_size += 8 * 4;
|
1766 |
|
|
|
1767 |
|
|
if (bfd_get_mach (abfd) == bfd_mach_am33
|
1768 |
|
|
|| bfd_get_mach (abfd) == bfd_mach_am33_2)
|
1769 |
|
|
{
|
1770 |
|
|
/* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */
|
1771 |
|
|
if (hash->movm_args & 0x1)
|
1772 |
|
|
hash->movm_stack_size += 6 * 4;
|
1773 |
|
|
|
1774 |
|
|
/* exreg1 space. e4, e5, e6, e7 */
|
1775 |
|
|
if (hash->movm_args & 0x2)
|
1776 |
|
|
hash->movm_stack_size += 4 * 4;
|
1777 |
|
|
|
1778 |
|
|
/* exreg0 space. e2, e3 */
|
1779 |
|
|
if (hash->movm_args & 0x4)
|
1780 |
|
|
hash->movm_stack_size += 2 * 4;
|
1781 |
|
|
}
|
1782 |
|
|
}
|
1783 |
|
|
|
1784 |
|
|
/* Now look for the two stack adjustment variants. */
|
1785 |
|
|
if (byte1 == 0xf8 && byte2 == 0xfe)
|
1786 |
|
|
{
|
1787 |
|
|
int temp = bfd_get_8 (abfd, contents + addr + 2);
|
1788 |
|
|
temp = ((temp & 0xff) ^ (~0x7f)) + 0x80;
|
1789 |
|
|
|
1790 |
|
|
hash->stack_size = -temp;
|
1791 |
|
|
}
|
1792 |
|
|
else if (byte1 == 0xfa && byte2 == 0xfe)
|
1793 |
|
|
{
|
1794 |
|
|
int temp = bfd_get_16 (abfd, contents + addr + 2);
|
1795 |
|
|
temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000;
|
1796 |
|
|
temp = -temp;
|
1797 |
|
|
|
1798 |
|
|
if (temp < 255)
|
1799 |
|
|
hash->stack_size = temp;
|
1800 |
|
|
}
|
1801 |
|
|
|
1802 |
|
|
/* If the total stack to be allocated by the call instruction is more
|
1803 |
|
|
than 255 bytes, then we can't remove the stack adjustment by using
|
1804 |
|
|
"call" (we might still be able to remove the "movm" instruction. */
|
1805 |
|
|
if (hash->stack_size + hash->movm_stack_size > 255)
|
1806 |
|
|
hash->stack_size = 0;
|
1807 |
|
|
}
|
1808 |
|
|
|
1809 |
|
|
/* Delete some bytes from a section while relaxing. */
|
1810 |
|
|
|
1811 |
|
|
static bfd_boolean
|
1812 |
|
|
mn10300_elf_relax_delete_bytes (bfd *abfd,
|
1813 |
|
|
asection *sec,
|
1814 |
|
|
bfd_vma addr,
|
1815 |
|
|
int count)
|
1816 |
|
|
{
|
1817 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
1818 |
|
|
unsigned int sec_shndx;
|
1819 |
|
|
bfd_byte *contents;
|
1820 |
|
|
Elf_Internal_Rela *irel, *irelend;
|
1821 |
|
|
Elf_Internal_Rela *irelalign;
|
1822 |
|
|
bfd_vma toaddr;
|
1823 |
|
|
Elf_Internal_Sym *isym, *isymend;
|
1824 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
1825 |
|
|
struct elf_link_hash_entry **end_hashes;
|
1826 |
|
|
unsigned int symcount;
|
1827 |
|
|
|
1828 |
|
|
sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
|
1829 |
|
|
|
1830 |
|
|
contents = elf_section_data (sec)->this_hdr.contents;
|
1831 |
|
|
|
1832 |
|
|
irelalign = NULL;
|
1833 |
|
|
toaddr = sec->size;
|
1834 |
|
|
|
1835 |
|
|
irel = elf_section_data (sec)->relocs;
|
1836 |
|
|
irelend = irel + sec->reloc_count;
|
1837 |
|
|
|
1838 |
|
|
if (sec->reloc_count > 0)
|
1839 |
|
|
{
|
1840 |
|
|
/* If there is an align reloc at the end of the section ignore it.
|
1841 |
|
|
GAS creates these relocs for reasons of its own, and they just
|
1842 |
|
|
serve to keep the section artifically inflated. */
|
1843 |
|
|
if (ELF32_R_TYPE ((irelend - 1)->r_info) == (int) R_MN10300_ALIGN)
|
1844 |
|
|
--irelend;
|
1845 |
|
|
|
1846 |
|
|
/* The deletion must stop at the next ALIGN reloc for an aligment
|
1847 |
|
|
power larger than, or not a multiple of, the number of bytes we
|
1848 |
|
|
are deleting. */
|
1849 |
|
|
for (; irel < irelend; irel++)
|
1850 |
|
|
{
|
1851 |
|
|
int alignment = 1 << irel->r_addend;
|
1852 |
|
|
|
1853 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN
|
1854 |
|
|
&& irel->r_offset > addr
|
1855 |
|
|
&& irel->r_offset < toaddr
|
1856 |
|
|
&& (count < alignment
|
1857 |
|
|
|| alignment % count != 0))
|
1858 |
|
|
{
|
1859 |
|
|
irelalign = irel;
|
1860 |
|
|
toaddr = irel->r_offset;
|
1861 |
|
|
break;
|
1862 |
|
|
}
|
1863 |
|
|
}
|
1864 |
|
|
}
|
1865 |
|
|
|
1866 |
|
|
/* Actually delete the bytes. */
|
1867 |
|
|
memmove (contents + addr, contents + addr + count,
|
1868 |
|
|
(size_t) (toaddr - addr - count));
|
1869 |
|
|
|
1870 |
|
|
/* Adjust the section's size if we are shrinking it, or else
|
1871 |
|
|
pad the bytes between the end of the shrunken region and
|
1872 |
|
|
the start of the next region with NOP codes. */
|
1873 |
|
|
if (irelalign == NULL)
|
1874 |
|
|
{
|
1875 |
|
|
sec->size -= count;
|
1876 |
|
|
/* Include symbols at the end of the section, but
|
1877 |
|
|
not at the end of a sub-region of the section. */
|
1878 |
|
|
toaddr ++;
|
1879 |
|
|
}
|
1880 |
|
|
else
|
1881 |
|
|
{
|
1882 |
|
|
int i;
|
1883 |
|
|
|
1884 |
|
|
#define NOP_OPCODE 0xcb
|
1885 |
|
|
|
1886 |
|
|
for (i = 0; i < count; i ++)
|
1887 |
|
|
bfd_put_8 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
|
1888 |
|
|
}
|
1889 |
|
|
|
1890 |
|
|
/* Adjust all the relocs. */
|
1891 |
|
|
for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
|
1892 |
|
|
{
|
1893 |
|
|
/* Get the new reloc address. */
|
1894 |
|
|
if ((irel->r_offset > addr
|
1895 |
|
|
&& irel->r_offset < toaddr)
|
1896 |
|
|
|| (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN
|
1897 |
|
|
&& irel->r_offset == toaddr))
|
1898 |
|
|
irel->r_offset -= count;
|
1899 |
|
|
}
|
1900 |
|
|
|
1901 |
|
|
/* Adjust the local symbols in the section, reducing their value
|
1902 |
|
|
by the number of bytes deleted. Note - symbols within the deleted
|
1903 |
|
|
region are moved to the address of the start of the region, which
|
1904 |
|
|
actually means that they will address the byte beyond the end of
|
1905 |
|
|
the region once the deletion has been completed. */
|
1906 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
1907 |
|
|
isym = (Elf_Internal_Sym *) symtab_hdr->contents;
|
1908 |
|
|
for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
|
1909 |
|
|
{
|
1910 |
|
|
if (isym->st_shndx == sec_shndx
|
1911 |
|
|
&& isym->st_value > addr
|
1912 |
|
|
&& isym->st_value < toaddr)
|
1913 |
|
|
{
|
1914 |
|
|
if (isym->st_value < addr + count)
|
1915 |
|
|
isym->st_value = addr;
|
1916 |
|
|
else
|
1917 |
|
|
isym->st_value -= count;
|
1918 |
|
|
}
|
1919 |
|
|
/* Adjust the function symbol's size as well. */
|
1920 |
|
|
else if (isym->st_shndx == sec_shndx
|
1921 |
|
|
&& ELF_ST_TYPE (isym->st_info) == STT_FUNC
|
1922 |
|
|
&& isym->st_value + isym->st_size > addr
|
1923 |
|
|
&& isym->st_value + isym->st_size < toaddr)
|
1924 |
|
|
isym->st_size -= count;
|
1925 |
|
|
}
|
1926 |
|
|
|
1927 |
|
|
/* Now adjust the global symbols defined in this section. */
|
1928 |
|
|
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
1929 |
|
|
- symtab_hdr->sh_info);
|
1930 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
1931 |
|
|
end_hashes = sym_hashes + symcount;
|
1932 |
|
|
for (; sym_hashes < end_hashes; sym_hashes++)
|
1933 |
|
|
{
|
1934 |
|
|
struct elf_link_hash_entry *sym_hash = *sym_hashes;
|
1935 |
|
|
|
1936 |
|
|
if ((sym_hash->root.type == bfd_link_hash_defined
|
1937 |
|
|
|| sym_hash->root.type == bfd_link_hash_defweak)
|
1938 |
|
|
&& sym_hash->root.u.def.section == sec
|
1939 |
|
|
&& sym_hash->root.u.def.value > addr
|
1940 |
|
|
&& sym_hash->root.u.def.value < toaddr)
|
1941 |
|
|
{
|
1942 |
|
|
if (sym_hash->root.u.def.value < addr + count)
|
1943 |
|
|
sym_hash->root.u.def.value = addr;
|
1944 |
|
|
else
|
1945 |
|
|
sym_hash->root.u.def.value -= count;
|
1946 |
|
|
}
|
1947 |
|
|
/* Adjust the function symbol's size as well. */
|
1948 |
|
|
else if (sym_hash->root.type == bfd_link_hash_defined
|
1949 |
|
|
&& sym_hash->root.u.def.section == sec
|
1950 |
|
|
&& sym_hash->type == STT_FUNC
|
1951 |
|
|
&& sym_hash->root.u.def.value + sym_hash->size > addr
|
1952 |
|
|
&& sym_hash->root.u.def.value + sym_hash->size < toaddr)
|
1953 |
|
|
sym_hash->size -= count;
|
1954 |
|
|
}
|
1955 |
|
|
|
1956 |
|
|
/* See if we can move the ALIGN reloc forward.
|
1957 |
|
|
We have adjusted r_offset for it already. */
|
1958 |
|
|
if (irelalign != NULL)
|
1959 |
|
|
{
|
1960 |
|
|
bfd_vma alignto, alignaddr;
|
1961 |
|
|
|
1962 |
|
|
if ((int) irelalign->r_addend > 0)
|
1963 |
|
|
{
|
1964 |
|
|
/* This is the old address. */
|
1965 |
|
|
alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend);
|
1966 |
|
|
/* This is where the align points to now. */
|
1967 |
|
|
alignaddr = BFD_ALIGN (irelalign->r_offset,
|
1968 |
|
|
1 << irelalign->r_addend);
|
1969 |
|
|
if (alignaddr < alignto)
|
1970 |
|
|
/* Tail recursion. */
|
1971 |
|
|
return mn10300_elf_relax_delete_bytes (abfd, sec, alignaddr,
|
1972 |
|
|
(int) (alignto - alignaddr));
|
1973 |
|
|
}
|
1974 |
|
|
}
|
1975 |
|
|
|
1976 |
|
|
return TRUE;
|
1977 |
|
|
}
|
1978 |
|
|
|
1979 |
|
|
/* Return TRUE if a symbol exists at the given address, else return
|
1980 |
|
|
FALSE. */
|
1981 |
|
|
|
1982 |
|
|
static bfd_boolean
|
1983 |
|
|
mn10300_elf_symbol_address_p (bfd *abfd,
|
1984 |
|
|
asection *sec,
|
1985 |
|
|
Elf_Internal_Sym *isym,
|
1986 |
|
|
bfd_vma addr)
|
1987 |
|
|
{
|
1988 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
1989 |
|
|
unsigned int sec_shndx;
|
1990 |
|
|
Elf_Internal_Sym *isymend;
|
1991 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
1992 |
|
|
struct elf_link_hash_entry **end_hashes;
|
1993 |
|
|
unsigned int symcount;
|
1994 |
|
|
|
1995 |
|
|
sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
|
1996 |
|
|
|
1997 |
|
|
/* Examine all the symbols. */
|
1998 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
1999 |
|
|
for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
|
2000 |
|
|
if (isym->st_shndx == sec_shndx
|
2001 |
|
|
&& isym->st_value == addr)
|
2002 |
|
|
return TRUE;
|
2003 |
|
|
|
2004 |
|
|
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
2005 |
|
|
- symtab_hdr->sh_info);
|
2006 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
2007 |
|
|
end_hashes = sym_hashes + symcount;
|
2008 |
|
|
for (; sym_hashes < end_hashes; sym_hashes++)
|
2009 |
|
|
{
|
2010 |
|
|
struct elf_link_hash_entry *sym_hash = *sym_hashes;
|
2011 |
|
|
|
2012 |
|
|
if ((sym_hash->root.type == bfd_link_hash_defined
|
2013 |
|
|
|| sym_hash->root.type == bfd_link_hash_defweak)
|
2014 |
|
|
&& sym_hash->root.u.def.section == sec
|
2015 |
|
|
&& sym_hash->root.u.def.value == addr)
|
2016 |
|
|
return TRUE;
|
2017 |
|
|
}
|
2018 |
|
|
|
2019 |
|
|
return FALSE;
|
2020 |
|
|
}
|
2021 |
|
|
|
2022 |
|
|
/* This function handles relaxing for the mn10300.
|
2023 |
|
|
|
2024 |
|
|
There are quite a few relaxing opportunities available on the mn10300:
|
2025 |
|
|
|
2026 |
|
|
* calls:32 -> calls:16 2 bytes
|
2027 |
|
|
* call:32 -> call:16 2 bytes
|
2028 |
|
|
|
2029 |
|
|
* call:32 -> calls:32 1 byte
|
2030 |
|
|
* call:16 -> calls:16 1 byte
|
2031 |
|
|
* These are done anytime using "calls" would result
|
2032 |
|
|
in smaller code, or when necessary to preserve the
|
2033 |
|
|
meaning of the program.
|
2034 |
|
|
|
2035 |
|
|
* call:32 varies
|
2036 |
|
|
* call:16
|
2037 |
|
|
* In some circumstances we can move instructions
|
2038 |
|
|
from a function prologue into a "call" instruction.
|
2039 |
|
|
This is only done if the resulting code is no larger
|
2040 |
|
|
than the original code.
|
2041 |
|
|
|
2042 |
|
|
* jmp:32 -> jmp:16 2 bytes
|
2043 |
|
|
* jmp:16 -> bra:8 1 byte
|
2044 |
|
|
|
2045 |
|
|
* If the previous instruction is a conditional branch
|
2046 |
|
|
around the jump/bra, we may be able to reverse its condition
|
2047 |
|
|
and change its target to the jump's target. The jump/bra
|
2048 |
|
|
can then be deleted. 2 bytes
|
2049 |
|
|
|
2050 |
|
|
* mov abs32 -> mov abs16 1 or 2 bytes
|
2051 |
|
|
|
2052 |
|
|
* Most instructions which accept imm32 can relax to imm16 1 or 2 bytes
|
2053 |
|
|
- Most instructions which accept imm16 can relax to imm8 1 or 2 bytes
|
2054 |
|
|
|
2055 |
|
|
* Most instructions which accept d32 can relax to d16 1 or 2 bytes
|
2056 |
|
|
- Most instructions which accept d16 can relax to d8 1 or 2 bytes
|
2057 |
|
|
|
2058 |
|
|
We don't handle imm16->imm8 or d16->d8 as they're very rare
|
2059 |
|
|
and somewhat more difficult to support. */
|
2060 |
|
|
|
2061 |
|
|
static bfd_boolean
|
2062 |
|
|
mn10300_elf_relax_section (bfd *abfd,
|
2063 |
|
|
asection *sec,
|
2064 |
|
|
struct bfd_link_info *link_info,
|
2065 |
|
|
bfd_boolean *again)
|
2066 |
|
|
{
|
2067 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
2068 |
|
|
Elf_Internal_Rela *internal_relocs = NULL;
|
2069 |
|
|
Elf_Internal_Rela *irel, *irelend;
|
2070 |
|
|
bfd_byte *contents = NULL;
|
2071 |
|
|
Elf_Internal_Sym *isymbuf = NULL;
|
2072 |
|
|
struct elf32_mn10300_link_hash_table *hash_table;
|
2073 |
|
|
asection *section = sec;
|
2074 |
|
|
bfd_vma align_gap_adjustment;
|
2075 |
|
|
|
2076 |
|
|
if (link_info->relocatable)
|
2077 |
|
|
(*link_info->callbacks->einfo)
|
2078 |
|
|
(_("%P%F: --relax and -r may not be used together\n"));
|
2079 |
|
|
|
2080 |
|
|
/* Assume nothing changes. */
|
2081 |
|
|
*again = FALSE;
|
2082 |
|
|
|
2083 |
|
|
/* We need a pointer to the mn10300 specific hash table. */
|
2084 |
|
|
hash_table = elf32_mn10300_hash_table (link_info);
|
2085 |
|
|
|
2086 |
|
|
/* Initialize fields in each hash table entry the first time through. */
|
2087 |
|
|
if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0)
|
2088 |
|
|
{
|
2089 |
|
|
bfd *input_bfd;
|
2090 |
|
|
|
2091 |
|
|
/* Iterate over all the input bfds. */
|
2092 |
|
|
for (input_bfd = link_info->input_bfds;
|
2093 |
|
|
input_bfd != NULL;
|
2094 |
|
|
input_bfd = input_bfd->link_next)
|
2095 |
|
|
{
|
2096 |
|
|
/* We're going to need all the symbols for each bfd. */
|
2097 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
2098 |
|
|
if (symtab_hdr->sh_info != 0)
|
2099 |
|
|
{
|
2100 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
2101 |
|
|
if (isymbuf == NULL)
|
2102 |
|
|
isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
|
2103 |
|
|
symtab_hdr->sh_info, 0,
|
2104 |
|
|
NULL, NULL, NULL);
|
2105 |
|
|
if (isymbuf == NULL)
|
2106 |
|
|
goto error_return;
|
2107 |
|
|
}
|
2108 |
|
|
|
2109 |
|
|
/* Iterate over each section in this bfd. */
|
2110 |
|
|
for (section = input_bfd->sections;
|
2111 |
|
|
section != NULL;
|
2112 |
|
|
section = section->next)
|
2113 |
|
|
{
|
2114 |
|
|
struct elf32_mn10300_link_hash_entry *hash;
|
2115 |
|
|
Elf_Internal_Sym *sym;
|
2116 |
|
|
asection *sym_sec = NULL;
|
2117 |
|
|
const char *sym_name;
|
2118 |
|
|
char *new_name;
|
2119 |
|
|
|
2120 |
|
|
/* If there's nothing to do in this section, skip it. */
|
2121 |
|
|
if (! ((section->flags & SEC_RELOC) != 0
|
2122 |
|
|
&& section->reloc_count != 0))
|
2123 |
|
|
continue;
|
2124 |
|
|
if ((section->flags & SEC_ALLOC) == 0)
|
2125 |
|
|
continue;
|
2126 |
|
|
|
2127 |
|
|
/* Get cached copy of section contents if it exists. */
|
2128 |
|
|
if (elf_section_data (section)->this_hdr.contents != NULL)
|
2129 |
|
|
contents = elf_section_data (section)->this_hdr.contents;
|
2130 |
|
|
else if (section->size != 0)
|
2131 |
|
|
{
|
2132 |
|
|
/* Go get them off disk. */
|
2133 |
|
|
if (!bfd_malloc_and_get_section (input_bfd, section,
|
2134 |
|
|
&contents))
|
2135 |
|
|
goto error_return;
|
2136 |
|
|
}
|
2137 |
|
|
else
|
2138 |
|
|
contents = NULL;
|
2139 |
|
|
|
2140 |
|
|
/* If there aren't any relocs, then there's nothing to do. */
|
2141 |
|
|
if ((section->flags & SEC_RELOC) != 0
|
2142 |
|
|
&& section->reloc_count != 0)
|
2143 |
|
|
{
|
2144 |
|
|
/* Get a copy of the native relocations. */
|
2145 |
|
|
internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section,
|
2146 |
|
|
NULL, NULL,
|
2147 |
|
|
link_info->keep_memory);
|
2148 |
|
|
if (internal_relocs == NULL)
|
2149 |
|
|
goto error_return;
|
2150 |
|
|
|
2151 |
|
|
/* Now examine each relocation. */
|
2152 |
|
|
irel = internal_relocs;
|
2153 |
|
|
irelend = irel + section->reloc_count;
|
2154 |
|
|
for (; irel < irelend; irel++)
|
2155 |
|
|
{
|
2156 |
|
|
long r_type;
|
2157 |
|
|
unsigned long r_index;
|
2158 |
|
|
unsigned char code;
|
2159 |
|
|
|
2160 |
|
|
r_type = ELF32_R_TYPE (irel->r_info);
|
2161 |
|
|
r_index = ELF32_R_SYM (irel->r_info);
|
2162 |
|
|
|
2163 |
|
|
if (r_type < 0 || r_type >= (int) R_MN10300_MAX)
|
2164 |
|
|
goto error_return;
|
2165 |
|
|
|
2166 |
|
|
/* We need the name and hash table entry of the target
|
2167 |
|
|
symbol! */
|
2168 |
|
|
hash = NULL;
|
2169 |
|
|
sym = NULL;
|
2170 |
|
|
sym_sec = NULL;
|
2171 |
|
|
|
2172 |
|
|
if (r_index < symtab_hdr->sh_info)
|
2173 |
|
|
{
|
2174 |
|
|
/* A local symbol. */
|
2175 |
|
|
Elf_Internal_Sym *isym;
|
2176 |
|
|
struct elf_link_hash_table *elftab;
|
2177 |
|
|
bfd_size_type amt;
|
2178 |
|
|
|
2179 |
|
|
isym = isymbuf + r_index;
|
2180 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
2181 |
|
|
sym_sec = bfd_und_section_ptr;
|
2182 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
2183 |
|
|
sym_sec = bfd_abs_section_ptr;
|
2184 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
2185 |
|
|
sym_sec = bfd_com_section_ptr;
|
2186 |
|
|
else
|
2187 |
|
|
sym_sec
|
2188 |
|
|
= bfd_section_from_elf_index (input_bfd,
|
2189 |
|
|
isym->st_shndx);
|
2190 |
|
|
|
2191 |
|
|
sym_name
|
2192 |
|
|
= bfd_elf_string_from_elf_section (input_bfd,
|
2193 |
|
|
(symtab_hdr
|
2194 |
|
|
->sh_link),
|
2195 |
|
|
isym->st_name);
|
2196 |
|
|
|
2197 |
|
|
/* If it isn't a function, then we don't care
|
2198 |
|
|
about it. */
|
2199 |
|
|
if (ELF_ST_TYPE (isym->st_info) != STT_FUNC)
|
2200 |
|
|
continue;
|
2201 |
|
|
|
2202 |
|
|
/* Tack on an ID so we can uniquely identify this
|
2203 |
|
|
local symbol in the global hash table. */
|
2204 |
|
|
amt = strlen (sym_name) + 10;
|
2205 |
|
|
new_name = bfd_malloc (amt);
|
2206 |
|
|
if (new_name == NULL)
|
2207 |
|
|
goto error_return;
|
2208 |
|
|
|
2209 |
|
|
sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
|
2210 |
|
|
sym_name = new_name;
|
2211 |
|
|
|
2212 |
|
|
elftab = &hash_table->static_hash_table->root;
|
2213 |
|
|
hash = ((struct elf32_mn10300_link_hash_entry *)
|
2214 |
|
|
elf_link_hash_lookup (elftab, sym_name,
|
2215 |
|
|
TRUE, TRUE, FALSE));
|
2216 |
|
|
free (new_name);
|
2217 |
|
|
}
|
2218 |
|
|
else
|
2219 |
|
|
{
|
2220 |
|
|
r_index -= symtab_hdr->sh_info;
|
2221 |
|
|
hash = (struct elf32_mn10300_link_hash_entry *)
|
2222 |
|
|
elf_sym_hashes (input_bfd)[r_index];
|
2223 |
|
|
}
|
2224 |
|
|
|
2225 |
|
|
sym_name = hash->root.root.root.string;
|
2226 |
|
|
if ((section->flags & SEC_CODE) != 0)
|
2227 |
|
|
{
|
2228 |
|
|
/* If this is not a "call" instruction, then we
|
2229 |
|
|
should convert "call" instructions to "calls"
|
2230 |
|
|
instructions. */
|
2231 |
|
|
code = bfd_get_8 (input_bfd,
|
2232 |
|
|
contents + irel->r_offset - 1);
|
2233 |
|
|
if (code != 0xdd && code != 0xcd)
|
2234 |
|
|
hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
|
2235 |
|
|
}
|
2236 |
|
|
|
2237 |
|
|
/* If this is a jump/call, then bump the
|
2238 |
|
|
direct_calls counter. Else force "call" to
|
2239 |
|
|
"calls" conversions. */
|
2240 |
|
|
if (r_type == R_MN10300_PCREL32
|
2241 |
|
|
|| r_type == R_MN10300_PLT32
|
2242 |
|
|
|| r_type == R_MN10300_PLT16
|
2243 |
|
|
|| r_type == R_MN10300_PCREL16)
|
2244 |
|
|
hash->direct_calls++;
|
2245 |
|
|
else
|
2246 |
|
|
hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
|
2247 |
|
|
}
|
2248 |
|
|
}
|
2249 |
|
|
|
2250 |
|
|
/* Now look at the actual contents to get the stack size,
|
2251 |
|
|
and a list of what registers were saved in the prologue
|
2252 |
|
|
(ie movm_args). */
|
2253 |
|
|
if ((section->flags & SEC_CODE) != 0)
|
2254 |
|
|
{
|
2255 |
|
|
Elf_Internal_Sym *isym, *isymend;
|
2256 |
|
|
unsigned int sec_shndx;
|
2257 |
|
|
struct elf_link_hash_entry **hashes;
|
2258 |
|
|
struct elf_link_hash_entry **end_hashes;
|
2259 |
|
|
unsigned int symcount;
|
2260 |
|
|
|
2261 |
|
|
sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
|
2262 |
|
|
section);
|
2263 |
|
|
|
2264 |
|
|
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
2265 |
|
|
- symtab_hdr->sh_info);
|
2266 |
|
|
hashes = elf_sym_hashes (input_bfd);
|
2267 |
|
|
end_hashes = hashes + symcount;
|
2268 |
|
|
|
2269 |
|
|
/* Look at each function defined in this section and
|
2270 |
|
|
update info for that function. */
|
2271 |
|
|
isymend = isymbuf + symtab_hdr->sh_info;
|
2272 |
|
|
for (isym = isymbuf; isym < isymend; isym++)
|
2273 |
|
|
{
|
2274 |
|
|
if (isym->st_shndx == sec_shndx
|
2275 |
|
|
&& ELF_ST_TYPE (isym->st_info) == STT_FUNC)
|
2276 |
|
|
{
|
2277 |
|
|
struct elf_link_hash_table *elftab;
|
2278 |
|
|
bfd_size_type amt;
|
2279 |
|
|
struct elf_link_hash_entry **lhashes = hashes;
|
2280 |
|
|
|
2281 |
|
|
/* Skip a local symbol if it aliases a
|
2282 |
|
|
global one. */
|
2283 |
|
|
for (; lhashes < end_hashes; lhashes++)
|
2284 |
|
|
{
|
2285 |
|
|
hash = (struct elf32_mn10300_link_hash_entry *) *lhashes;
|
2286 |
|
|
if ((hash->root.root.type == bfd_link_hash_defined
|
2287 |
|
|
|| hash->root.root.type == bfd_link_hash_defweak)
|
2288 |
|
|
&& hash->root.root.u.def.section == section
|
2289 |
|
|
&& hash->root.type == STT_FUNC
|
2290 |
|
|
&& hash->root.root.u.def.value == isym->st_value)
|
2291 |
|
|
break;
|
2292 |
|
|
}
|
2293 |
|
|
if (lhashes != end_hashes)
|
2294 |
|
|
continue;
|
2295 |
|
|
|
2296 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
2297 |
|
|
sym_sec = bfd_und_section_ptr;
|
2298 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
2299 |
|
|
sym_sec = bfd_abs_section_ptr;
|
2300 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
2301 |
|
|
sym_sec = bfd_com_section_ptr;
|
2302 |
|
|
else
|
2303 |
|
|
sym_sec
|
2304 |
|
|
= bfd_section_from_elf_index (input_bfd,
|
2305 |
|
|
isym->st_shndx);
|
2306 |
|
|
|
2307 |
|
|
sym_name = (bfd_elf_string_from_elf_section
|
2308 |
|
|
(input_bfd, symtab_hdr->sh_link,
|
2309 |
|
|
isym->st_name));
|
2310 |
|
|
|
2311 |
|
|
/* Tack on an ID so we can uniquely identify this
|
2312 |
|
|
local symbol in the global hash table. */
|
2313 |
|
|
amt = strlen (sym_name) + 10;
|
2314 |
|
|
new_name = bfd_malloc (amt);
|
2315 |
|
|
if (new_name == NULL)
|
2316 |
|
|
goto error_return;
|
2317 |
|
|
|
2318 |
|
|
sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
|
2319 |
|
|
sym_name = new_name;
|
2320 |
|
|
|
2321 |
|
|
elftab = &hash_table->static_hash_table->root;
|
2322 |
|
|
hash = ((struct elf32_mn10300_link_hash_entry *)
|
2323 |
|
|
elf_link_hash_lookup (elftab, sym_name,
|
2324 |
|
|
TRUE, TRUE, FALSE));
|
2325 |
|
|
free (new_name);
|
2326 |
|
|
compute_function_info (input_bfd, hash,
|
2327 |
|
|
isym->st_value, contents);
|
2328 |
|
|
hash->value = isym->st_value;
|
2329 |
|
|
}
|
2330 |
|
|
}
|
2331 |
|
|
|
2332 |
|
|
for (; hashes < end_hashes; hashes++)
|
2333 |
|
|
{
|
2334 |
|
|
hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
|
2335 |
|
|
if ((hash->root.root.type == bfd_link_hash_defined
|
2336 |
|
|
|| hash->root.root.type == bfd_link_hash_defweak)
|
2337 |
|
|
&& hash->root.root.u.def.section == section
|
2338 |
|
|
&& hash->root.type == STT_FUNC)
|
2339 |
|
|
compute_function_info (input_bfd, hash,
|
2340 |
|
|
(hash)->root.root.u.def.value,
|
2341 |
|
|
contents);
|
2342 |
|
|
}
|
2343 |
|
|
}
|
2344 |
|
|
|
2345 |
|
|
/* Cache or free any memory we allocated for the relocs. */
|
2346 |
|
|
if (internal_relocs != NULL
|
2347 |
|
|
&& elf_section_data (section)->relocs != internal_relocs)
|
2348 |
|
|
free (internal_relocs);
|
2349 |
|
|
internal_relocs = NULL;
|
2350 |
|
|
|
2351 |
|
|
/* Cache or free any memory we allocated for the contents. */
|
2352 |
|
|
if (contents != NULL
|
2353 |
|
|
&& elf_section_data (section)->this_hdr.contents != contents)
|
2354 |
|
|
{
|
2355 |
|
|
if (! link_info->keep_memory)
|
2356 |
|
|
free (contents);
|
2357 |
|
|
else
|
2358 |
|
|
{
|
2359 |
|
|
/* Cache the section contents for elf_link_input_bfd. */
|
2360 |
|
|
elf_section_data (section)->this_hdr.contents = contents;
|
2361 |
|
|
}
|
2362 |
|
|
}
|
2363 |
|
|
contents = NULL;
|
2364 |
|
|
}
|
2365 |
|
|
|
2366 |
|
|
/* Cache or free any memory we allocated for the symbols. */
|
2367 |
|
|
if (isymbuf != NULL
|
2368 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
2369 |
|
|
{
|
2370 |
|
|
if (! link_info->keep_memory)
|
2371 |
|
|
free (isymbuf);
|
2372 |
|
|
else
|
2373 |
|
|
{
|
2374 |
|
|
/* Cache the symbols for elf_link_input_bfd. */
|
2375 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
2376 |
|
|
}
|
2377 |
|
|
}
|
2378 |
|
|
isymbuf = NULL;
|
2379 |
|
|
}
|
2380 |
|
|
|
2381 |
|
|
/* Now iterate on each symbol in the hash table and perform
|
2382 |
|
|
the final initialization steps on each. */
|
2383 |
|
|
elf32_mn10300_link_hash_traverse (hash_table,
|
2384 |
|
|
elf32_mn10300_finish_hash_table_entry,
|
2385 |
|
|
link_info);
|
2386 |
|
|
elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
|
2387 |
|
|
elf32_mn10300_finish_hash_table_entry,
|
2388 |
|
|
link_info);
|
2389 |
|
|
|
2390 |
|
|
{
|
2391 |
|
|
/* This section of code collects all our local symbols, sorts
|
2392 |
|
|
them by value, and looks for multiple symbols referring to
|
2393 |
|
|
the same address. For those symbols, the flags are merged.
|
2394 |
|
|
At this point, the only flag that can be set is
|
2395 |
|
|
MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags
|
2396 |
|
|
together. */
|
2397 |
|
|
int static_count = 0, i;
|
2398 |
|
|
struct elf32_mn10300_link_hash_entry **entries;
|
2399 |
|
|
struct elf32_mn10300_link_hash_entry **ptr;
|
2400 |
|
|
|
2401 |
|
|
elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
|
2402 |
|
|
elf32_mn10300_count_hash_table_entries,
|
2403 |
|
|
&static_count);
|
2404 |
|
|
|
2405 |
|
|
entries = bfd_malloc (static_count * sizeof (* ptr));
|
2406 |
|
|
|
2407 |
|
|
ptr = entries;
|
2408 |
|
|
elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
|
2409 |
|
|
elf32_mn10300_list_hash_table_entries,
|
2410 |
|
|
& ptr);
|
2411 |
|
|
|
2412 |
|
|
qsort (entries, static_count, sizeof (entries[0]), sort_by_value);
|
2413 |
|
|
|
2414 |
|
|
for (i = 0; i < static_count - 1; i++)
|
2415 |
|
|
if (entries[i]->value && entries[i]->value == entries[i+1]->value)
|
2416 |
|
|
{
|
2417 |
|
|
int v = entries[i]->flags;
|
2418 |
|
|
int j;
|
2419 |
|
|
|
2420 |
|
|
for (j = i + 1; j < static_count && entries[j]->value == entries[i]->value; j++)
|
2421 |
|
|
v |= entries[j]->flags;
|
2422 |
|
|
|
2423 |
|
|
for (j = i; j < static_count && entries[j]->value == entries[i]->value; j++)
|
2424 |
|
|
entries[j]->flags = v;
|
2425 |
|
|
|
2426 |
|
|
i = j - 1;
|
2427 |
|
|
}
|
2428 |
|
|
}
|
2429 |
|
|
|
2430 |
|
|
/* All entries in the hash table are fully initialized. */
|
2431 |
|
|
hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED;
|
2432 |
|
|
|
2433 |
|
|
/* Now that everything has been initialized, go through each
|
2434 |
|
|
code section and delete any prologue insns which will be
|
2435 |
|
|
redundant because their operations will be performed by
|
2436 |
|
|
a "call" instruction. */
|
2437 |
|
|
for (input_bfd = link_info->input_bfds;
|
2438 |
|
|
input_bfd != NULL;
|
2439 |
|
|
input_bfd = input_bfd->link_next)
|
2440 |
|
|
{
|
2441 |
|
|
/* We're going to need all the local symbols for each bfd. */
|
2442 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
2443 |
|
|
if (symtab_hdr->sh_info != 0)
|
2444 |
|
|
{
|
2445 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
2446 |
|
|
if (isymbuf == NULL)
|
2447 |
|
|
isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
|
2448 |
|
|
symtab_hdr->sh_info, 0,
|
2449 |
|
|
NULL, NULL, NULL);
|
2450 |
|
|
if (isymbuf == NULL)
|
2451 |
|
|
goto error_return;
|
2452 |
|
|
}
|
2453 |
|
|
|
2454 |
|
|
/* Walk over each section in this bfd. */
|
2455 |
|
|
for (section = input_bfd->sections;
|
2456 |
|
|
section != NULL;
|
2457 |
|
|
section = section->next)
|
2458 |
|
|
{
|
2459 |
|
|
unsigned int sec_shndx;
|
2460 |
|
|
Elf_Internal_Sym *isym, *isymend;
|
2461 |
|
|
struct elf_link_hash_entry **hashes;
|
2462 |
|
|
struct elf_link_hash_entry **end_hashes;
|
2463 |
|
|
unsigned int symcount;
|
2464 |
|
|
|
2465 |
|
|
/* Skip non-code sections and empty sections. */
|
2466 |
|
|
if ((section->flags & SEC_CODE) == 0 || section->size == 0)
|
2467 |
|
|
continue;
|
2468 |
|
|
|
2469 |
|
|
if (section->reloc_count != 0)
|
2470 |
|
|
{
|
2471 |
|
|
/* Get a copy of the native relocations. */
|
2472 |
|
|
internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section,
|
2473 |
|
|
NULL, NULL,
|
2474 |
|
|
link_info->keep_memory);
|
2475 |
|
|
if (internal_relocs == NULL)
|
2476 |
|
|
goto error_return;
|
2477 |
|
|
}
|
2478 |
|
|
|
2479 |
|
|
/* Get cached copy of section contents if it exists. */
|
2480 |
|
|
if (elf_section_data (section)->this_hdr.contents != NULL)
|
2481 |
|
|
contents = elf_section_data (section)->this_hdr.contents;
|
2482 |
|
|
else
|
2483 |
|
|
{
|
2484 |
|
|
/* Go get them off disk. */
|
2485 |
|
|
if (!bfd_malloc_and_get_section (input_bfd, section,
|
2486 |
|
|
&contents))
|
2487 |
|
|
goto error_return;
|
2488 |
|
|
}
|
2489 |
|
|
|
2490 |
|
|
sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
|
2491 |
|
|
section);
|
2492 |
|
|
|
2493 |
|
|
/* Now look for any function in this section which needs
|
2494 |
|
|
insns deleted from its prologue. */
|
2495 |
|
|
isymend = isymbuf + symtab_hdr->sh_info;
|
2496 |
|
|
for (isym = isymbuf; isym < isymend; isym++)
|
2497 |
|
|
{
|
2498 |
|
|
struct elf32_mn10300_link_hash_entry *sym_hash;
|
2499 |
|
|
asection *sym_sec = NULL;
|
2500 |
|
|
const char *sym_name;
|
2501 |
|
|
char *new_name;
|
2502 |
|
|
struct elf_link_hash_table *elftab;
|
2503 |
|
|
bfd_size_type amt;
|
2504 |
|
|
|
2505 |
|
|
if (isym->st_shndx != sec_shndx)
|
2506 |
|
|
continue;
|
2507 |
|
|
|
2508 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
2509 |
|
|
sym_sec = bfd_und_section_ptr;
|
2510 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
2511 |
|
|
sym_sec = bfd_abs_section_ptr;
|
2512 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
2513 |
|
|
sym_sec = bfd_com_section_ptr;
|
2514 |
|
|
else
|
2515 |
|
|
sym_sec
|
2516 |
|
|
= bfd_section_from_elf_index (input_bfd, isym->st_shndx);
|
2517 |
|
|
|
2518 |
|
|
sym_name
|
2519 |
|
|
= bfd_elf_string_from_elf_section (input_bfd,
|
2520 |
|
|
symtab_hdr->sh_link,
|
2521 |
|
|
isym->st_name);
|
2522 |
|
|
|
2523 |
|
|
/* Tack on an ID so we can uniquely identify this
|
2524 |
|
|
local symbol in the global hash table. */
|
2525 |
|
|
amt = strlen (sym_name) + 10;
|
2526 |
|
|
new_name = bfd_malloc (amt);
|
2527 |
|
|
if (new_name == NULL)
|
2528 |
|
|
goto error_return;
|
2529 |
|
|
sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
|
2530 |
|
|
sym_name = new_name;
|
2531 |
|
|
|
2532 |
|
|
elftab = & hash_table->static_hash_table->root;
|
2533 |
|
|
sym_hash = (struct elf32_mn10300_link_hash_entry *)
|
2534 |
|
|
elf_link_hash_lookup (elftab, sym_name,
|
2535 |
|
|
FALSE, FALSE, FALSE);
|
2536 |
|
|
|
2537 |
|
|
free (new_name);
|
2538 |
|
|
if (sym_hash == NULL)
|
2539 |
|
|
continue;
|
2540 |
|
|
|
2541 |
|
|
if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
|
2542 |
|
|
&& ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
|
2543 |
|
|
{
|
2544 |
|
|
int bytes = 0;
|
2545 |
|
|
|
2546 |
|
|
/* Note that we've changed things. */
|
2547 |
|
|
elf_section_data (section)->relocs = internal_relocs;
|
2548 |
|
|
elf_section_data (section)->this_hdr.contents = contents;
|
2549 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
2550 |
|
|
|
2551 |
|
|
/* Count how many bytes we're going to delete. */
|
2552 |
|
|
if (sym_hash->movm_args)
|
2553 |
|
|
bytes += 2;
|
2554 |
|
|
|
2555 |
|
|
if (sym_hash->stack_size > 0)
|
2556 |
|
|
{
|
2557 |
|
|
if (sym_hash->stack_size <= 128)
|
2558 |
|
|
bytes += 3;
|
2559 |
|
|
else
|
2560 |
|
|
bytes += 4;
|
2561 |
|
|
}
|
2562 |
|
|
|
2563 |
|
|
/* Note that we've deleted prologue bytes for this
|
2564 |
|
|
function. */
|
2565 |
|
|
sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
|
2566 |
|
|
|
2567 |
|
|
/* Actually delete the bytes. */
|
2568 |
|
|
if (!mn10300_elf_relax_delete_bytes (input_bfd,
|
2569 |
|
|
section,
|
2570 |
|
|
isym->st_value,
|
2571 |
|
|
bytes))
|
2572 |
|
|
goto error_return;
|
2573 |
|
|
|
2574 |
|
|
/* Something changed. Not strictly necessary, but
|
2575 |
|
|
may lead to more relaxing opportunities. */
|
2576 |
|
|
*again = TRUE;
|
2577 |
|
|
}
|
2578 |
|
|
}
|
2579 |
|
|
|
2580 |
|
|
/* Look for any global functions in this section which
|
2581 |
|
|
need insns deleted from their prologues. */
|
2582 |
|
|
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
2583 |
|
|
- symtab_hdr->sh_info);
|
2584 |
|
|
hashes = elf_sym_hashes (input_bfd);
|
2585 |
|
|
end_hashes = hashes + symcount;
|
2586 |
|
|
for (; hashes < end_hashes; hashes++)
|
2587 |
|
|
{
|
2588 |
|
|
struct elf32_mn10300_link_hash_entry *sym_hash;
|
2589 |
|
|
|
2590 |
|
|
sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
|
2591 |
|
|
if ((sym_hash->root.root.type == bfd_link_hash_defined
|
2592 |
|
|
|| sym_hash->root.root.type == bfd_link_hash_defweak)
|
2593 |
|
|
&& sym_hash->root.root.u.def.section == section
|
2594 |
|
|
&& ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
|
2595 |
|
|
&& ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
|
2596 |
|
|
{
|
2597 |
|
|
int bytes = 0;
|
2598 |
|
|
bfd_vma symval;
|
2599 |
|
|
|
2600 |
|
|
/* Note that we've changed things. */
|
2601 |
|
|
elf_section_data (section)->relocs = internal_relocs;
|
2602 |
|
|
elf_section_data (section)->this_hdr.contents = contents;
|
2603 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
2604 |
|
|
|
2605 |
|
|
/* Count how many bytes we're going to delete. */
|
2606 |
|
|
if (sym_hash->movm_args)
|
2607 |
|
|
bytes += 2;
|
2608 |
|
|
|
2609 |
|
|
if (sym_hash->stack_size > 0)
|
2610 |
|
|
{
|
2611 |
|
|
if (sym_hash->stack_size <= 128)
|
2612 |
|
|
bytes += 3;
|
2613 |
|
|
else
|
2614 |
|
|
bytes += 4;
|
2615 |
|
|
}
|
2616 |
|
|
|
2617 |
|
|
/* Note that we've deleted prologue bytes for this
|
2618 |
|
|
function. */
|
2619 |
|
|
sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
|
2620 |
|
|
|
2621 |
|
|
/* Actually delete the bytes. */
|
2622 |
|
|
symval = sym_hash->root.root.u.def.value;
|
2623 |
|
|
if (!mn10300_elf_relax_delete_bytes (input_bfd,
|
2624 |
|
|
section,
|
2625 |
|
|
symval,
|
2626 |
|
|
bytes))
|
2627 |
|
|
goto error_return;
|
2628 |
|
|
|
2629 |
|
|
/* Something changed. Not strictly necessary, but
|
2630 |
|
|
may lead to more relaxing opportunities. */
|
2631 |
|
|
*again = TRUE;
|
2632 |
|
|
}
|
2633 |
|
|
}
|
2634 |
|
|
|
2635 |
|
|
/* Cache or free any memory we allocated for the relocs. */
|
2636 |
|
|
if (internal_relocs != NULL
|
2637 |
|
|
&& elf_section_data (section)->relocs != internal_relocs)
|
2638 |
|
|
free (internal_relocs);
|
2639 |
|
|
internal_relocs = NULL;
|
2640 |
|
|
|
2641 |
|
|
/* Cache or free any memory we allocated for the contents. */
|
2642 |
|
|
if (contents != NULL
|
2643 |
|
|
&& elf_section_data (section)->this_hdr.contents != contents)
|
2644 |
|
|
{
|
2645 |
|
|
if (! link_info->keep_memory)
|
2646 |
|
|
free (contents);
|
2647 |
|
|
else
|
2648 |
|
|
/* Cache the section contents for elf_link_input_bfd. */
|
2649 |
|
|
elf_section_data (section)->this_hdr.contents = contents;
|
2650 |
|
|
}
|
2651 |
|
|
contents = NULL;
|
2652 |
|
|
}
|
2653 |
|
|
|
2654 |
|
|
/* Cache or free any memory we allocated for the symbols. */
|
2655 |
|
|
if (isymbuf != NULL
|
2656 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
2657 |
|
|
{
|
2658 |
|
|
if (! link_info->keep_memory)
|
2659 |
|
|
free (isymbuf);
|
2660 |
|
|
else
|
2661 |
|
|
/* Cache the symbols for elf_link_input_bfd. */
|
2662 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
2663 |
|
|
}
|
2664 |
|
|
isymbuf = NULL;
|
2665 |
|
|
}
|
2666 |
|
|
}
|
2667 |
|
|
|
2668 |
|
|
/* (Re)initialize for the basic instruction shortening/relaxing pass. */
|
2669 |
|
|
contents = NULL;
|
2670 |
|
|
internal_relocs = NULL;
|
2671 |
|
|
isymbuf = NULL;
|
2672 |
|
|
/* For error_return. */
|
2673 |
|
|
section = sec;
|
2674 |
|
|
|
2675 |
|
|
/* We don't have to do anything for a relocatable link, if
|
2676 |
|
|
this section does not have relocs, or if this is not a
|
2677 |
|
|
code section. */
|
2678 |
|
|
if (link_info->relocatable
|
2679 |
|
|
|| (sec->flags & SEC_RELOC) == 0
|
2680 |
|
|
|| sec->reloc_count == 0
|
2681 |
|
|
|| (sec->flags & SEC_CODE) == 0)
|
2682 |
|
|
return TRUE;
|
2683 |
|
|
|
2684 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
2685 |
|
|
|
2686 |
|
|
/* Get a copy of the native relocations. */
|
2687 |
|
|
internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
|
2688 |
|
|
link_info->keep_memory);
|
2689 |
|
|
if (internal_relocs == NULL)
|
2690 |
|
|
goto error_return;
|
2691 |
|
|
|
2692 |
|
|
/* Scan for worst case alignment gap changes. Note that this logic
|
2693 |
|
|
is not ideal; what we should do is run this scan for every
|
2694 |
|
|
opcode/address range and adjust accordingly, but that's
|
2695 |
|
|
expensive. Worst case is that for an alignment of N bytes, we
|
2696 |
|
|
move by 2*N-N-1 bytes, assuming we have aligns of 1, 2, 4, 8, etc
|
2697 |
|
|
all before it. Plus, this still doesn't cover cross-section
|
2698 |
|
|
jumps with section alignment. */
|
2699 |
|
|
irelend = internal_relocs + sec->reloc_count;
|
2700 |
|
|
align_gap_adjustment = 0;
|
2701 |
|
|
for (irel = internal_relocs; irel < irelend; irel++)
|
2702 |
|
|
{
|
2703 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN)
|
2704 |
|
|
{
|
2705 |
|
|
bfd_vma adj = 1 << irel->r_addend;
|
2706 |
|
|
bfd_vma aend = irel->r_offset;
|
2707 |
|
|
|
2708 |
|
|
aend = BFD_ALIGN (aend, 1 << irel->r_addend);
|
2709 |
|
|
adj = 2 * adj - adj - 1;
|
2710 |
|
|
|
2711 |
|
|
/* Record the biggest adjustmnet. Skip any alignment at the
|
2712 |
|
|
end of our section. */
|
2713 |
|
|
if (align_gap_adjustment < adj
|
2714 |
|
|
&& aend < sec->output_section->vma + sec->output_offset + sec->size)
|
2715 |
|
|
align_gap_adjustment = adj;
|
2716 |
|
|
}
|
2717 |
|
|
}
|
2718 |
|
|
|
2719 |
|
|
/* Walk through them looking for relaxing opportunities. */
|
2720 |
|
|
irelend = internal_relocs + sec->reloc_count;
|
2721 |
|
|
for (irel = internal_relocs; irel < irelend; irel++)
|
2722 |
|
|
{
|
2723 |
|
|
bfd_vma symval;
|
2724 |
|
|
bfd_signed_vma jump_offset;
|
2725 |
|
|
asection *sym_sec = NULL;
|
2726 |
|
|
struct elf32_mn10300_link_hash_entry *h = NULL;
|
2727 |
|
|
|
2728 |
|
|
/* If this isn't something that can be relaxed, then ignore
|
2729 |
|
|
this reloc. */
|
2730 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE
|
2731 |
|
|
|| ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8
|
2732 |
|
|
|| ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX)
|
2733 |
|
|
continue;
|
2734 |
|
|
|
2735 |
|
|
/* Get the section contents if we haven't done so already. */
|
2736 |
|
|
if (contents == NULL)
|
2737 |
|
|
{
|
2738 |
|
|
/* Get cached copy if it exists. */
|
2739 |
|
|
if (elf_section_data (sec)->this_hdr.contents != NULL)
|
2740 |
|
|
contents = elf_section_data (sec)->this_hdr.contents;
|
2741 |
|
|
else
|
2742 |
|
|
{
|
2743 |
|
|
/* Go get them off disk. */
|
2744 |
|
|
if (!bfd_malloc_and_get_section (abfd, sec, &contents))
|
2745 |
|
|
goto error_return;
|
2746 |
|
|
}
|
2747 |
|
|
}
|
2748 |
|
|
|
2749 |
|
|
/* Read this BFD's symbols if we haven't done so already. */
|
2750 |
|
|
if (isymbuf == NULL && symtab_hdr->sh_info != 0)
|
2751 |
|
|
{
|
2752 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
2753 |
|
|
if (isymbuf == NULL)
|
2754 |
|
|
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
|
2755 |
|
|
symtab_hdr->sh_info, 0,
|
2756 |
|
|
NULL, NULL, NULL);
|
2757 |
|
|
if (isymbuf == NULL)
|
2758 |
|
|
goto error_return;
|
2759 |
|
|
}
|
2760 |
|
|
|
2761 |
|
|
/* Get the value of the symbol referred to by the reloc. */
|
2762 |
|
|
if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
|
2763 |
|
|
{
|
2764 |
|
|
Elf_Internal_Sym *isym;
|
2765 |
|
|
const char *sym_name;
|
2766 |
|
|
char *new_name;
|
2767 |
|
|
|
2768 |
|
|
/* A local symbol. */
|
2769 |
|
|
isym = isymbuf + ELF32_R_SYM (irel->r_info);
|
2770 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
2771 |
|
|
sym_sec = bfd_und_section_ptr;
|
2772 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
2773 |
|
|
sym_sec = bfd_abs_section_ptr;
|
2774 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
2775 |
|
|
sym_sec = bfd_com_section_ptr;
|
2776 |
|
|
else
|
2777 |
|
|
sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
2778 |
|
|
|
2779 |
|
|
sym_name = bfd_elf_string_from_elf_section (abfd,
|
2780 |
|
|
symtab_hdr->sh_link,
|
2781 |
|
|
isym->st_name);
|
2782 |
|
|
|
2783 |
|
|
if ((sym_sec->flags & SEC_MERGE)
|
2784 |
|
|
&& sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE)
|
2785 |
|
|
{
|
2786 |
|
|
symval = isym->st_value;
|
2787 |
|
|
|
2788 |
|
|
/* GAS may reduce relocations against symbols in SEC_MERGE
|
2789 |
|
|
sections to a relocation against the section symbol when
|
2790 |
|
|
the original addend was zero. When the reloc is against
|
2791 |
|
|
a section symbol we should include the addend in the
|
2792 |
|
|
offset passed to _bfd_merged_section_offset, since the
|
2793 |
|
|
location of interest is the original symbol. On the
|
2794 |
|
|
other hand, an access to "sym+addend" where "sym" is not
|
2795 |
|
|
a section symbol should not include the addend; Such an
|
2796 |
|
|
access is presumed to be an offset from "sym"; The
|
2797 |
|
|
location of interest is just "sym". */
|
2798 |
|
|
if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
|
2799 |
|
|
symval += irel->r_addend;
|
2800 |
|
|
|
2801 |
|
|
symval = _bfd_merged_section_offset (abfd, & sym_sec,
|
2802 |
|
|
elf_section_data (sym_sec)->sec_info,
|
2803 |
|
|
symval);
|
2804 |
|
|
|
2805 |
|
|
if (ELF_ST_TYPE (isym->st_info) != STT_SECTION)
|
2806 |
|
|
symval += irel->r_addend;
|
2807 |
|
|
|
2808 |
|
|
symval += sym_sec->output_section->vma
|
2809 |
|
|
+ sym_sec->output_offset - irel->r_addend;
|
2810 |
|
|
}
|
2811 |
|
|
else
|
2812 |
|
|
symval = (isym->st_value
|
2813 |
|
|
+ sym_sec->output_section->vma
|
2814 |
|
|
+ sym_sec->output_offset);
|
2815 |
|
|
|
2816 |
|
|
/* Tack on an ID so we can uniquely identify this
|
2817 |
|
|
local symbol in the global hash table. */
|
2818 |
|
|
new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10);
|
2819 |
|
|
if (new_name == NULL)
|
2820 |
|
|
goto error_return;
|
2821 |
|
|
sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
|
2822 |
|
|
sym_name = new_name;
|
2823 |
|
|
|
2824 |
|
|
h = (struct elf32_mn10300_link_hash_entry *)
|
2825 |
|
|
elf_link_hash_lookup (&hash_table->static_hash_table->root,
|
2826 |
|
|
sym_name, FALSE, FALSE, FALSE);
|
2827 |
|
|
free (new_name);
|
2828 |
|
|
}
|
2829 |
|
|
else
|
2830 |
|
|
{
|
2831 |
|
|
unsigned long indx;
|
2832 |
|
|
|
2833 |
|
|
/* An external symbol. */
|
2834 |
|
|
indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
|
2835 |
|
|
h = (struct elf32_mn10300_link_hash_entry *)
|
2836 |
|
|
(elf_sym_hashes (abfd)[indx]);
|
2837 |
|
|
BFD_ASSERT (h != NULL);
|
2838 |
|
|
if (h->root.root.type != bfd_link_hash_defined
|
2839 |
|
|
&& h->root.root.type != bfd_link_hash_defweak)
|
2840 |
|
|
/* This appears to be a reference to an undefined
|
2841 |
|
|
symbol. Just ignore it--it will be caught by the
|
2842 |
|
|
regular reloc processing. */
|
2843 |
|
|
continue;
|
2844 |
|
|
|
2845 |
|
|
/* Check for a reference to a discarded symbol and ignore it. */
|
2846 |
|
|
if (h->root.root.u.def.section->output_section == NULL)
|
2847 |
|
|
continue;
|
2848 |
|
|
|
2849 |
|
|
sym_sec = h->root.root.u.def.section->output_section;
|
2850 |
|
|
|
2851 |
|
|
symval = (h->root.root.u.def.value
|
2852 |
|
|
+ h->root.root.u.def.section->output_section->vma
|
2853 |
|
|
+ h->root.root.u.def.section->output_offset);
|
2854 |
|
|
}
|
2855 |
|
|
|
2856 |
|
|
/* For simplicity of coding, we are going to modify the section
|
2857 |
|
|
contents, the section relocs, and the BFD symbol table. We
|
2858 |
|
|
must tell the rest of the code not to free up this
|
2859 |
|
|
information. It would be possible to instead create a table
|
2860 |
|
|
of changes which have to be made, as is done in coff-mips.c;
|
2861 |
|
|
that would be more work, but would require less memory when
|
2862 |
|
|
the linker is run. */
|
2863 |
|
|
|
2864 |
|
|
/* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
|
2865 |
|
|
branch/call, also deal with "call" -> "calls" conversions and
|
2866 |
|
|
insertion of prologue data into "call" instructions. */
|
2867 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32
|
2868 |
|
|
|| ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32)
|
2869 |
|
|
{
|
2870 |
|
|
bfd_vma value = symval;
|
2871 |
|
|
|
2872 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32
|
2873 |
|
|
&& h != NULL
|
2874 |
|
|
&& ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
|
2875 |
|
|
&& ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
|
2876 |
|
|
&& h->root.plt.offset != (bfd_vma) -1)
|
2877 |
|
|
{
|
2878 |
|
|
asection * splt;
|
2879 |
|
|
|
2880 |
|
|
splt = bfd_get_section_by_name (elf_hash_table (link_info)
|
2881 |
|
|
->dynobj, ".plt");
|
2882 |
|
|
|
2883 |
|
|
value = ((splt->output_section->vma
|
2884 |
|
|
+ splt->output_offset
|
2885 |
|
|
+ h->root.plt.offset)
|
2886 |
|
|
- (sec->output_section->vma
|
2887 |
|
|
+ sec->output_offset
|
2888 |
|
|
+ irel->r_offset));
|
2889 |
|
|
}
|
2890 |
|
|
|
2891 |
|
|
/* If we've got a "call" instruction that needs to be turned
|
2892 |
|
|
into a "calls" instruction, do so now. It saves a byte. */
|
2893 |
|
|
if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
|
2894 |
|
|
{
|
2895 |
|
|
unsigned char code;
|
2896 |
|
|
|
2897 |
|
|
/* Get the opcode. */
|
2898 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
2899 |
|
|
|
2900 |
|
|
/* Make sure we're working with a "call" instruction! */
|
2901 |
|
|
if (code == 0xdd)
|
2902 |
|
|
{
|
2903 |
|
|
/* Note that we've changed the relocs, section contents,
|
2904 |
|
|
etc. */
|
2905 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
2906 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
2907 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
2908 |
|
|
|
2909 |
|
|
/* Fix the opcode. */
|
2910 |
|
|
bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1);
|
2911 |
|
|
bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
|
2912 |
|
|
|
2913 |
|
|
/* Fix irel->r_offset and irel->r_addend. */
|
2914 |
|
|
irel->r_offset += 1;
|
2915 |
|
|
irel->r_addend += 1;
|
2916 |
|
|
|
2917 |
|
|
/* Delete one byte of data. */
|
2918 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
2919 |
|
|
irel->r_offset + 3, 1))
|
2920 |
|
|
goto error_return;
|
2921 |
|
|
|
2922 |
|
|
/* That will change things, so, we should relax again.
|
2923 |
|
|
Note that this is not required, and it may be slow. */
|
2924 |
|
|
*again = TRUE;
|
2925 |
|
|
}
|
2926 |
|
|
}
|
2927 |
|
|
else if (h)
|
2928 |
|
|
{
|
2929 |
|
|
/* We've got a "call" instruction which needs some data
|
2930 |
|
|
from target function filled in. */
|
2931 |
|
|
unsigned char code;
|
2932 |
|
|
|
2933 |
|
|
/* Get the opcode. */
|
2934 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
2935 |
|
|
|
2936 |
|
|
/* Insert data from the target function into the "call"
|
2937 |
|
|
instruction if needed. */
|
2938 |
|
|
if (code == 0xdd)
|
2939 |
|
|
{
|
2940 |
|
|
bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4);
|
2941 |
|
|
bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
|
2942 |
|
|
contents + irel->r_offset + 5);
|
2943 |
|
|
}
|
2944 |
|
|
}
|
2945 |
|
|
|
2946 |
|
|
/* Deal with pc-relative gunk. */
|
2947 |
|
|
value -= (sec->output_section->vma + sec->output_offset);
|
2948 |
|
|
value -= irel->r_offset;
|
2949 |
|
|
value += irel->r_addend;
|
2950 |
|
|
|
2951 |
|
|
/* See if the value will fit in 16 bits, note the high value is
|
2952 |
|
|
0x7fff + 2 as the target will be two bytes closer if we are
|
2953 |
|
|
able to relax, if it's in the same section. */
|
2954 |
|
|
if (sec->output_section == sym_sec->output_section)
|
2955 |
|
|
jump_offset = 0x8001;
|
2956 |
|
|
else
|
2957 |
|
|
jump_offset = 0x7fff;
|
2958 |
|
|
|
2959 |
|
|
/* Account for jumps across alignment boundaries using
|
2960 |
|
|
align_gap_adjustment. */
|
2961 |
|
|
if ((bfd_signed_vma) value < jump_offset - (bfd_signed_vma) align_gap_adjustment
|
2962 |
|
|
&& ((bfd_signed_vma) value > -0x8000 + (bfd_signed_vma) align_gap_adjustment))
|
2963 |
|
|
{
|
2964 |
|
|
unsigned char code;
|
2965 |
|
|
|
2966 |
|
|
/* Get the opcode. */
|
2967 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
2968 |
|
|
|
2969 |
|
|
if (code != 0xdc && code != 0xdd && code != 0xff)
|
2970 |
|
|
continue;
|
2971 |
|
|
|
2972 |
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
2973 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
2974 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
2975 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
2976 |
|
|
|
2977 |
|
|
/* Fix the opcode. */
|
2978 |
|
|
if (code == 0xdc)
|
2979 |
|
|
bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1);
|
2980 |
|
|
else if (code == 0xdd)
|
2981 |
|
|
bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1);
|
2982 |
|
|
else if (code == 0xff)
|
2983 |
|
|
bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
|
2984 |
|
|
|
2985 |
|
|
/* Fix the relocation's type. */
|
2986 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
2987 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
2988 |
|
|
== (int) R_MN10300_PLT32)
|
2989 |
|
|
? R_MN10300_PLT16 :
|
2990 |
|
|
R_MN10300_PCREL16);
|
2991 |
|
|
|
2992 |
|
|
/* Delete two bytes of data. */
|
2993 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
2994 |
|
|
irel->r_offset + 1, 2))
|
2995 |
|
|
goto error_return;
|
2996 |
|
|
|
2997 |
|
|
/* That will change things, so, we should relax again.
|
2998 |
|
|
Note that this is not required, and it may be slow. */
|
2999 |
|
|
*again = TRUE;
|
3000 |
|
|
}
|
3001 |
|
|
}
|
3002 |
|
|
|
3003 |
|
|
/* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
|
3004 |
|
|
branch. */
|
3005 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16)
|
3006 |
|
|
{
|
3007 |
|
|
bfd_vma value = symval;
|
3008 |
|
|
|
3009 |
|
|
/* If we've got a "call" instruction that needs to be turned
|
3010 |
|
|
into a "calls" instruction, do so now. It saves a byte. */
|
3011 |
|
|
if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
|
3012 |
|
|
{
|
3013 |
|
|
unsigned char code;
|
3014 |
|
|
|
3015 |
|
|
/* Get the opcode. */
|
3016 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
3017 |
|
|
|
3018 |
|
|
/* Make sure we're working with a "call" instruction! */
|
3019 |
|
|
if (code == 0xcd)
|
3020 |
|
|
{
|
3021 |
|
|
/* Note that we've changed the relocs, section contents,
|
3022 |
|
|
etc. */
|
3023 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
3024 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
3025 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
3026 |
|
|
|
3027 |
|
|
/* Fix the opcode. */
|
3028 |
|
|
bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1);
|
3029 |
|
|
bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
|
3030 |
|
|
|
3031 |
|
|
/* Fix irel->r_offset and irel->r_addend. */
|
3032 |
|
|
irel->r_offset += 1;
|
3033 |
|
|
irel->r_addend += 1;
|
3034 |
|
|
|
3035 |
|
|
/* Delete one byte of data. */
|
3036 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
3037 |
|
|
irel->r_offset + 1, 1))
|
3038 |
|
|
goto error_return;
|
3039 |
|
|
|
3040 |
|
|
/* That will change things, so, we should relax again.
|
3041 |
|
|
Note that this is not required, and it may be slow. */
|
3042 |
|
|
*again = TRUE;
|
3043 |
|
|
}
|
3044 |
|
|
}
|
3045 |
|
|
else if (h)
|
3046 |
|
|
{
|
3047 |
|
|
unsigned char code;
|
3048 |
|
|
|
3049 |
|
|
/* Get the opcode. */
|
3050 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
3051 |
|
|
|
3052 |
|
|
/* Insert data from the target function into the "call"
|
3053 |
|
|
instruction if needed. */
|
3054 |
|
|
if (code == 0xcd)
|
3055 |
|
|
{
|
3056 |
|
|
bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2);
|
3057 |
|
|
bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
|
3058 |
|
|
contents + irel->r_offset + 3);
|
3059 |
|
|
}
|
3060 |
|
|
}
|
3061 |
|
|
|
3062 |
|
|
/* Deal with pc-relative gunk. */
|
3063 |
|
|
value -= (sec->output_section->vma + sec->output_offset);
|
3064 |
|
|
value -= irel->r_offset;
|
3065 |
|
|
value += irel->r_addend;
|
3066 |
|
|
|
3067 |
|
|
/* See if the value will fit in 8 bits, note the high value is
|
3068 |
|
|
0x7f + 1 as the target will be one bytes closer if we are
|
3069 |
|
|
able to relax. */
|
3070 |
|
|
if ((long) value < 0x80 && (long) value > -0x80)
|
3071 |
|
|
{
|
3072 |
|
|
unsigned char code;
|
3073 |
|
|
|
3074 |
|
|
/* Get the opcode. */
|
3075 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
3076 |
|
|
|
3077 |
|
|
if (code != 0xcc)
|
3078 |
|
|
continue;
|
3079 |
|
|
|
3080 |
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
3081 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
3082 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
3083 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
3084 |
|
|
|
3085 |
|
|
/* Fix the opcode. */
|
3086 |
|
|
bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1);
|
3087 |
|
|
|
3088 |
|
|
/* Fix the relocation's type. */
|
3089 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
3090 |
|
|
R_MN10300_PCREL8);
|
3091 |
|
|
|
3092 |
|
|
/* Delete one byte of data. */
|
3093 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
3094 |
|
|
irel->r_offset + 1, 1))
|
3095 |
|
|
goto error_return;
|
3096 |
|
|
|
3097 |
|
|
/* That will change things, so, we should relax again.
|
3098 |
|
|
Note that this is not required, and it may be slow. */
|
3099 |
|
|
*again = TRUE;
|
3100 |
|
|
}
|
3101 |
|
|
}
|
3102 |
|
|
|
3103 |
|
|
/* Try to eliminate an unconditional 8 bit pc-relative branch
|
3104 |
|
|
which immediately follows a conditional 8 bit pc-relative
|
3105 |
|
|
branch around the unconditional branch.
|
3106 |
|
|
|
3107 |
|
|
original: new:
|
3108 |
|
|
bCC lab1 bCC' lab2
|
3109 |
|
|
bra lab2
|
3110 |
|
|
lab1: lab1:
|
3111 |
|
|
|
3112 |
|
|
This happens when the bCC can't reach lab2 at assembly time,
|
3113 |
|
|
but due to other relaxations it can reach at link time. */
|
3114 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8)
|
3115 |
|
|
{
|
3116 |
|
|
Elf_Internal_Rela *nrel;
|
3117 |
|
|
bfd_vma value = symval;
|
3118 |
|
|
unsigned char code;
|
3119 |
|
|
|
3120 |
|
|
/* Deal with pc-relative gunk. */
|
3121 |
|
|
value -= (sec->output_section->vma + sec->output_offset);
|
3122 |
|
|
value -= irel->r_offset;
|
3123 |
|
|
value += irel->r_addend;
|
3124 |
|
|
|
3125 |
|
|
/* Do nothing if this reloc is the last byte in the section. */
|
3126 |
|
|
if (irel->r_offset == sec->size)
|
3127 |
|
|
continue;
|
3128 |
|
|
|
3129 |
|
|
/* See if the next instruction is an unconditional pc-relative
|
3130 |
|
|
branch, more often than not this test will fail, so we
|
3131 |
|
|
test it first to speed things up. */
|
3132 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
|
3133 |
|
|
if (code != 0xca)
|
3134 |
|
|
continue;
|
3135 |
|
|
|
3136 |
|
|
/* Also make sure the next relocation applies to the next
|
3137 |
|
|
instruction and that it's a pc-relative 8 bit branch. */
|
3138 |
|
|
nrel = irel + 1;
|
3139 |
|
|
if (nrel == irelend
|
3140 |
|
|
|| irel->r_offset + 2 != nrel->r_offset
|
3141 |
|
|
|| ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8)
|
3142 |
|
|
continue;
|
3143 |
|
|
|
3144 |
|
|
/* Make sure our destination immediately follows the
|
3145 |
|
|
unconditional branch. */
|
3146 |
|
|
if (symval != (sec->output_section->vma + sec->output_offset
|
3147 |
|
|
+ irel->r_offset + 3))
|
3148 |
|
|
continue;
|
3149 |
|
|
|
3150 |
|
|
/* Now make sure we are a conditional branch. This may not
|
3151 |
|
|
be necessary, but why take the chance.
|
3152 |
|
|
|
3153 |
|
|
Note these checks assume that R_MN10300_PCREL8 relocs
|
3154 |
|
|
only occur on bCC and bCCx insns. If they occured
|
3155 |
|
|
elsewhere, we'd need to know the start of this insn
|
3156 |
|
|
for this check to be accurate. */
|
3157 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
3158 |
|
|
if (code != 0xc0 && code != 0xc1 && code != 0xc2
|
3159 |
|
|
&& code != 0xc3 && code != 0xc4 && code != 0xc5
|
3160 |
|
|
&& code != 0xc6 && code != 0xc7 && code != 0xc8
|
3161 |
|
|
&& code != 0xc9 && code != 0xe8 && code != 0xe9
|
3162 |
|
|
&& code != 0xea && code != 0xeb)
|
3163 |
|
|
continue;
|
3164 |
|
|
|
3165 |
|
|
/* We also have to be sure there is no symbol/label
|
3166 |
|
|
at the unconditional branch. */
|
3167 |
|
|
if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf,
|
3168 |
|
|
irel->r_offset + 1))
|
3169 |
|
|
continue;
|
3170 |
|
|
|
3171 |
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
3172 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
3173 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
3174 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
3175 |
|
|
|
3176 |
|
|
/* Reverse the condition of the first branch. */
|
3177 |
|
|
switch (code)
|
3178 |
|
|
{
|
3179 |
|
|
case 0xc8:
|
3180 |
|
|
code = 0xc9;
|
3181 |
|
|
break;
|
3182 |
|
|
case 0xc9:
|
3183 |
|
|
code = 0xc8;
|
3184 |
|
|
break;
|
3185 |
|
|
case 0xc0:
|
3186 |
|
|
code = 0xc2;
|
3187 |
|
|
break;
|
3188 |
|
|
case 0xc2:
|
3189 |
|
|
code = 0xc0;
|
3190 |
|
|
break;
|
3191 |
|
|
case 0xc3:
|
3192 |
|
|
code = 0xc1;
|
3193 |
|
|
break;
|
3194 |
|
|
case 0xc1:
|
3195 |
|
|
code = 0xc3;
|
3196 |
|
|
break;
|
3197 |
|
|
case 0xc4:
|
3198 |
|
|
code = 0xc6;
|
3199 |
|
|
break;
|
3200 |
|
|
case 0xc6:
|
3201 |
|
|
code = 0xc4;
|
3202 |
|
|
break;
|
3203 |
|
|
case 0xc7:
|
3204 |
|
|
code = 0xc5;
|
3205 |
|
|
break;
|
3206 |
|
|
case 0xc5:
|
3207 |
|
|
code = 0xc7;
|
3208 |
|
|
break;
|
3209 |
|
|
case 0xe8:
|
3210 |
|
|
code = 0xe9;
|
3211 |
|
|
break;
|
3212 |
|
|
case 0x9d:
|
3213 |
|
|
code = 0xe8;
|
3214 |
|
|
break;
|
3215 |
|
|
case 0xea:
|
3216 |
|
|
code = 0xeb;
|
3217 |
|
|
break;
|
3218 |
|
|
case 0xeb:
|
3219 |
|
|
code = 0xea;
|
3220 |
|
|
break;
|
3221 |
|
|
}
|
3222 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
|
3223 |
|
|
|
3224 |
|
|
/* Set the reloc type and symbol for the first branch
|
3225 |
|
|
from the second branch. */
|
3226 |
|
|
irel->r_info = nrel->r_info;
|
3227 |
|
|
|
3228 |
|
|
/* Make the reloc for the second branch a null reloc. */
|
3229 |
|
|
nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
|
3230 |
|
|
R_MN10300_NONE);
|
3231 |
|
|
|
3232 |
|
|
/* Delete two bytes of data. */
|
3233 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
3234 |
|
|
irel->r_offset + 1, 2))
|
3235 |
|
|
goto error_return;
|
3236 |
|
|
|
3237 |
|
|
/* That will change things, so, we should relax again.
|
3238 |
|
|
Note that this is not required, and it may be slow. */
|
3239 |
|
|
*again = TRUE;
|
3240 |
|
|
}
|
3241 |
|
|
|
3242 |
|
|
/* Try to turn a 24 immediate, displacement or absolute address
|
3243 |
|
|
into a 8 immediate, displacement or absolute address. */
|
3244 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24)
|
3245 |
|
|
{
|
3246 |
|
|
bfd_vma value = symval;
|
3247 |
|
|
value += irel->r_addend;
|
3248 |
|
|
|
3249 |
|
|
/* See if the value will fit in 8 bits. */
|
3250 |
|
|
if ((long) value < 0x7f && (long) value > -0x80)
|
3251 |
|
|
{
|
3252 |
|
|
unsigned char code;
|
3253 |
|
|
|
3254 |
|
|
/* AM33 insns which have 24 operands are 6 bytes long and
|
3255 |
|
|
will have 0xfd as the first byte. */
|
3256 |
|
|
|
3257 |
|
|
/* Get the first opcode. */
|
3258 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
|
3259 |
|
|
|
3260 |
|
|
if (code == 0xfd)
|
3261 |
|
|
{
|
3262 |
|
|
/* Get the second opcode. */
|
3263 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
|
3264 |
|
|
|
3265 |
|
|
/* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
|
3266 |
|
|
equivalent instructions exists. */
|
3267 |
|
|
if (code != 0x6b && code != 0x7b
|
3268 |
|
|
&& code != 0x8b && code != 0x9b
|
3269 |
|
|
&& ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
|
3270 |
|
|
|| (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
|
3271 |
|
|
|| (code & 0x0f) == 0x0e))
|
3272 |
|
|
{
|
3273 |
|
|
/* Not safe if the high bit is on as relaxing may
|
3274 |
|
|
move the value out of high mem and thus not fit
|
3275 |
|
|
in a signed 8bit value. This is currently over
|
3276 |
|
|
conservative. */
|
3277 |
|
|
if ((value & 0x80) == 0)
|
3278 |
|
|
{
|
3279 |
|
|
/* Note that we've changed the relocation contents,
|
3280 |
|
|
etc. */
|
3281 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
3282 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
3283 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
3284 |
|
|
|
3285 |
|
|
/* Fix the opcode. */
|
3286 |
|
|
bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3);
|
3287 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
|
3288 |
|
|
|
3289 |
|
|
/* Fix the relocation's type. */
|
3290 |
|
|
irel->r_info =
|
3291 |
|
|
ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
3292 |
|
|
R_MN10300_8);
|
3293 |
|
|
|
3294 |
|
|
/* Delete two bytes of data. */
|
3295 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
3296 |
|
|
irel->r_offset + 1, 2))
|
3297 |
|
|
goto error_return;
|
3298 |
|
|
|
3299 |
|
|
/* That will change things, so, we should relax
|
3300 |
|
|
again. Note that this is not required, and it
|
3301 |
|
|
may be slow. */
|
3302 |
|
|
*again = TRUE;
|
3303 |
|
|
break;
|
3304 |
|
|
}
|
3305 |
|
|
}
|
3306 |
|
|
}
|
3307 |
|
|
}
|
3308 |
|
|
}
|
3309 |
|
|
|
3310 |
|
|
/* Try to turn a 32bit immediate, displacement or absolute address
|
3311 |
|
|
into a 16bit immediate, displacement or absolute address. */
|
3312 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32
|
3313 |
|
|
|| ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32
|
3314 |
|
|
|| ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
|
3315 |
|
|
{
|
3316 |
|
|
bfd_vma value = symval;
|
3317 |
|
|
|
3318 |
|
|
if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32)
|
3319 |
|
|
{
|
3320 |
|
|
asection * sgot;
|
3321 |
|
|
|
3322 |
|
|
sgot = bfd_get_section_by_name (elf_hash_table (link_info)
|
3323 |
|
|
->dynobj, ".got");
|
3324 |
|
|
|
3325 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32)
|
3326 |
|
|
{
|
3327 |
|
|
value = sgot->output_offset;
|
3328 |
|
|
|
3329 |
|
|
if (h)
|
3330 |
|
|
value += h->root.got.offset;
|
3331 |
|
|
else
|
3332 |
|
|
value += (elf_local_got_offsets
|
3333 |
|
|
(abfd)[ELF32_R_SYM (irel->r_info)]);
|
3334 |
|
|
}
|
3335 |
|
|
else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
|
3336 |
|
|
value -= sgot->output_section->vma;
|
3337 |
|
|
else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
|
3338 |
|
|
value = (sgot->output_section->vma
|
3339 |
|
|
- (sec->output_section->vma
|
3340 |
|
|
+ sec->output_offset
|
3341 |
|
|
+ irel->r_offset));
|
3342 |
|
|
else
|
3343 |
|
|
abort ();
|
3344 |
|
|
}
|
3345 |
|
|
|
3346 |
|
|
value += irel->r_addend;
|
3347 |
|
|
|
3348 |
|
|
/* See if the value will fit in 24 bits.
|
3349 |
|
|
We allow any 16bit match here. We prune those we can't
|
3350 |
|
|
handle below. */
|
3351 |
|
|
if ((long) value < 0x7fffff && (long) value > -0x800000)
|
3352 |
|
|
{
|
3353 |
|
|
unsigned char code;
|
3354 |
|
|
|
3355 |
|
|
/* AM33 insns which have 32bit operands are 7 bytes long and
|
3356 |
|
|
will have 0xfe as the first byte. */
|
3357 |
|
|
|
3358 |
|
|
/* Get the first opcode. */
|
3359 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
|
3360 |
|
|
|
3361 |
|
|
if (code == 0xfe)
|
3362 |
|
|
{
|
3363 |
|
|
/* Get the second opcode. */
|
3364 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
|
3365 |
|
|
|
3366 |
|
|
/* All the am33 32 -> 24 relaxing possibilities. */
|
3367 |
|
|
/* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
|
3368 |
|
|
equivalent instructions exists. */
|
3369 |
|
|
if (code != 0x6b && code != 0x7b
|
3370 |
|
|
&& code != 0x8b && code != 0x9b
|
3371 |
|
|
&& (ELF32_R_TYPE (irel->r_info)
|
3372 |
|
|
!= (int) R_MN10300_GOTPC32)
|
3373 |
|
|
&& ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
|
3374 |
|
|
|| (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
|
3375 |
|
|
|| (code & 0x0f) == 0x0e))
|
3376 |
|
|
{
|
3377 |
|
|
/* Not safe if the high bit is on as relaxing may
|
3378 |
|
|
move the value out of high mem and thus not fit
|
3379 |
|
|
in a signed 16bit value. This is currently over
|
3380 |
|
|
conservative. */
|
3381 |
|
|
if ((value & 0x8000) == 0)
|
3382 |
|
|
{
|
3383 |
|
|
/* Note that we've changed the relocation contents,
|
3384 |
|
|
etc. */
|
3385 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
3386 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
3387 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
3388 |
|
|
|
3389 |
|
|
/* Fix the opcode. */
|
3390 |
|
|
bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3);
|
3391 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
|
3392 |
|
|
|
3393 |
|
|
/* Fix the relocation's type. */
|
3394 |
|
|
irel->r_info =
|
3395 |
|
|
ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
3396 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
3397 |
|
|
== (int) R_MN10300_GOTOFF32)
|
3398 |
|
|
? R_MN10300_GOTOFF24
|
3399 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
3400 |
|
|
== (int) R_MN10300_GOT32)
|
3401 |
|
|
? R_MN10300_GOT24 :
|
3402 |
|
|
R_MN10300_24);
|
3403 |
|
|
|
3404 |
|
|
/* Delete one byte of data. */
|
3405 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
3406 |
|
|
irel->r_offset + 3, 1))
|
3407 |
|
|
goto error_return;
|
3408 |
|
|
|
3409 |
|
|
/* That will change things, so, we should relax
|
3410 |
|
|
again. Note that this is not required, and it
|
3411 |
|
|
may be slow. */
|
3412 |
|
|
*again = TRUE;
|
3413 |
|
|
break;
|
3414 |
|
|
}
|
3415 |
|
|
}
|
3416 |
|
|
}
|
3417 |
|
|
}
|
3418 |
|
|
|
3419 |
|
|
/* See if the value will fit in 16 bits.
|
3420 |
|
|
We allow any 16bit match here. We prune those we can't
|
3421 |
|
|
handle below. */
|
3422 |
|
|
if ((long) value < 0x7fff && (long) value > -0x8000)
|
3423 |
|
|
{
|
3424 |
|
|
unsigned char code;
|
3425 |
|
|
|
3426 |
|
|
/* Most insns which have 32bit operands are 6 bytes long;
|
3427 |
|
|
exceptions are pcrel insns and bit insns.
|
3428 |
|
|
|
3429 |
|
|
We handle pcrel insns above. We don't bother trying
|
3430 |
|
|
to handle the bit insns here.
|
3431 |
|
|
|
3432 |
|
|
The first byte of the remaining insns will be 0xfc. */
|
3433 |
|
|
|
3434 |
|
|
/* Get the first opcode. */
|
3435 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
|
3436 |
|
|
|
3437 |
|
|
if (code != 0xfc)
|
3438 |
|
|
continue;
|
3439 |
|
|
|
3440 |
|
|
/* Get the second opcode. */
|
3441 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
3442 |
|
|
|
3443 |
|
|
if ((code & 0xf0) < 0x80)
|
3444 |
|
|
switch (code & 0xf0)
|
3445 |
|
|
{
|
3446 |
|
|
/* mov (d32,am),dn -> mov (d32,am),dn
|
3447 |
|
|
mov dm,(d32,am) -> mov dn,(d32,am)
|
3448 |
|
|
mov (d32,am),an -> mov (d32,am),an
|
3449 |
|
|
mov dm,(d32,am) -> mov dn,(d32,am)
|
3450 |
|
|
movbu (d32,am),dn -> movbu (d32,am),dn
|
3451 |
|
|
movbu dm,(d32,am) -> movbu dn,(d32,am)
|
3452 |
|
|
movhu (d32,am),dn -> movhu (d32,am),dn
|
3453 |
|
|
movhu dm,(d32,am) -> movhu dn,(d32,am) */
|
3454 |
|
|
case 0x00:
|
3455 |
|
|
case 0x10:
|
3456 |
|
|
case 0x20:
|
3457 |
|
|
case 0x30:
|
3458 |
|
|
case 0x40:
|
3459 |
|
|
case 0x50:
|
3460 |
|
|
case 0x60:
|
3461 |
|
|
case 0x70:
|
3462 |
|
|
/* Not safe if the high bit is on as relaxing may
|
3463 |
|
|
move the value out of high mem and thus not fit
|
3464 |
|
|
in a signed 16bit value. */
|
3465 |
|
|
if (code == 0xcc
|
3466 |
|
|
&& (value & 0x8000))
|
3467 |
|
|
continue;
|
3468 |
|
|
|
3469 |
|
|
/* Note that we've changed the relocation contents, etc. */
|
3470 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
3471 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
3472 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
3473 |
|
|
|
3474 |
|
|
/* Fix the opcode. */
|
3475 |
|
|
bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
|
3476 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
|
3477 |
|
|
|
3478 |
|
|
/* Fix the relocation's type. */
|
3479 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
3480 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
3481 |
|
|
== (int) R_MN10300_GOTOFF32)
|
3482 |
|
|
? R_MN10300_GOTOFF16
|
3483 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
3484 |
|
|
== (int) R_MN10300_GOT32)
|
3485 |
|
|
? R_MN10300_GOT16
|
3486 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
3487 |
|
|
== (int) R_MN10300_GOTPC32)
|
3488 |
|
|
? R_MN10300_GOTPC16 :
|
3489 |
|
|
R_MN10300_16);
|
3490 |
|
|
|
3491 |
|
|
/* Delete two bytes of data. */
|
3492 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
3493 |
|
|
irel->r_offset + 2, 2))
|
3494 |
|
|
goto error_return;
|
3495 |
|
|
|
3496 |
|
|
/* That will change things, so, we should relax again.
|
3497 |
|
|
Note that this is not required, and it may be slow. */
|
3498 |
|
|
*again = TRUE;
|
3499 |
|
|
break;
|
3500 |
|
|
}
|
3501 |
|
|
else if ((code & 0xf0) == 0x80
|
3502 |
|
|
|| (code & 0xf0) == 0x90)
|
3503 |
|
|
switch (code & 0xf3)
|
3504 |
|
|
{
|
3505 |
|
|
/* mov dn,(abs32) -> mov dn,(abs16)
|
3506 |
|
|
movbu dn,(abs32) -> movbu dn,(abs16)
|
3507 |
|
|
movhu dn,(abs32) -> movhu dn,(abs16) */
|
3508 |
|
|
case 0x81:
|
3509 |
|
|
case 0x82:
|
3510 |
|
|
case 0x83:
|
3511 |
|
|
/* Note that we've changed the relocation contents, etc. */
|
3512 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
3513 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
3514 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
3515 |
|
|
|
3516 |
|
|
if ((code & 0xf3) == 0x81)
|
3517 |
|
|
code = 0x01 + (code & 0x0c);
|
3518 |
|
|
else if ((code & 0xf3) == 0x82)
|
3519 |
|
|
code = 0x02 + (code & 0x0c);
|
3520 |
|
|
else if ((code & 0xf3) == 0x83)
|
3521 |
|
|
code = 0x03 + (code & 0x0c);
|
3522 |
|
|
else
|
3523 |
|
|
abort ();
|
3524 |
|
|
|
3525 |
|
|
/* Fix the opcode. */
|
3526 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
|
3527 |
|
|
|
3528 |
|
|
/* Fix the relocation's type. */
|
3529 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
3530 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
3531 |
|
|
== (int) R_MN10300_GOTOFF32)
|
3532 |
|
|
? R_MN10300_GOTOFF16
|
3533 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
3534 |
|
|
== (int) R_MN10300_GOT32)
|
3535 |
|
|
? R_MN10300_GOT16
|
3536 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
3537 |
|
|
== (int) R_MN10300_GOTPC32)
|
3538 |
|
|
? R_MN10300_GOTPC16 :
|
3539 |
|
|
R_MN10300_16);
|
3540 |
|
|
|
3541 |
|
|
/* The opcode got shorter too, so we have to fix the
|
3542 |
|
|
addend and offset too! */
|
3543 |
|
|
irel->r_offset -= 1;
|
3544 |
|
|
|
3545 |
|
|
/* Delete three bytes of data. */
|
3546 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
3547 |
|
|
irel->r_offset + 1, 3))
|
3548 |
|
|
goto error_return;
|
3549 |
|
|
|
3550 |
|
|
/* That will change things, so, we should relax again.
|
3551 |
|
|
Note that this is not required, and it may be slow. */
|
3552 |
|
|
*again = TRUE;
|
3553 |
|
|
break;
|
3554 |
|
|
|
3555 |
|
|
/* mov am,(abs32) -> mov am,(abs16)
|
3556 |
|
|
mov am,(d32,sp) -> mov am,(d16,sp)
|
3557 |
|
|
mov dm,(d32,sp) -> mov dm,(d32,sp)
|
3558 |
|
|
movbu dm,(d32,sp) -> movbu dm,(d32,sp)
|
3559 |
|
|
movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
|
3560 |
|
|
case 0x80:
|
3561 |
|
|
case 0x90:
|
3562 |
|
|
case 0x91:
|
3563 |
|
|
case 0x92:
|
3564 |
|
|
case 0x93:
|
3565 |
|
|
/* sp-based offsets are zero-extended. */
|
3566 |
|
|
if (code >= 0x90 && code <= 0x93
|
3567 |
|
|
&& (long) value < 0)
|
3568 |
|
|
continue;
|
3569 |
|
|
|
3570 |
|
|
/* Note that we've changed the relocation contents, etc. */
|
3571 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
3572 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
3573 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
3574 |
|
|
|
3575 |
|
|
/* Fix the opcode. */
|
3576 |
|
|
bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
|
3577 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
|
3578 |
|
|
|
3579 |
|
|
/* Fix the relocation's type. */
|
3580 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
3581 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
3582 |
|
|
== (int) R_MN10300_GOTOFF32)
|
3583 |
|
|
? R_MN10300_GOTOFF16
|
3584 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
3585 |
|
|
== (int) R_MN10300_GOT32)
|
3586 |
|
|
? R_MN10300_GOT16
|
3587 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
3588 |
|
|
== (int) R_MN10300_GOTPC32)
|
3589 |
|
|
? R_MN10300_GOTPC16 :
|
3590 |
|
|
R_MN10300_16);
|
3591 |
|
|
|
3592 |
|
|
/* Delete two bytes of data. */
|
3593 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
3594 |
|
|
irel->r_offset + 2, 2))
|
3595 |
|
|
goto error_return;
|
3596 |
|
|
|
3597 |
|
|
/* That will change things, so, we should relax again.
|
3598 |
|
|
Note that this is not required, and it may be slow. */
|
3599 |
|
|
*again = TRUE;
|
3600 |
|
|
break;
|
3601 |
|
|
}
|
3602 |
|
|
else if ((code & 0xf0) < 0xf0)
|
3603 |
|
|
switch (code & 0xfc)
|
3604 |
|
|
{
|
3605 |
|
|
/* mov imm32,dn -> mov imm16,dn
|
3606 |
|
|
mov imm32,an -> mov imm16,an
|
3607 |
|
|
mov (abs32),dn -> mov (abs16),dn
|
3608 |
|
|
movbu (abs32),dn -> movbu (abs16),dn
|
3609 |
|
|
movhu (abs32),dn -> movhu (abs16),dn */
|
3610 |
|
|
case 0xcc:
|
3611 |
|
|
case 0xdc:
|
3612 |
|
|
case 0xa4:
|
3613 |
|
|
case 0xa8:
|
3614 |
|
|
case 0xac:
|
3615 |
|
|
/* Not safe if the high bit is on as relaxing may
|
3616 |
|
|
move the value out of high mem and thus not fit
|
3617 |
|
|
in a signed 16bit value. */
|
3618 |
|
|
if (code == 0xcc
|
3619 |
|
|
&& (value & 0x8000))
|
3620 |
|
|
continue;
|
3621 |
|
|
|
3622 |
|
|
/* mov imm16, an zero-extends the immediate. */
|
3623 |
|
|
if (code == 0xdc
|
3624 |
|
|
&& (long) value < 0)
|
3625 |
|
|
continue;
|
3626 |
|
|
|
3627 |
|
|
/* Note that we've changed the relocation contents, etc. */
|
3628 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
3629 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
3630 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
3631 |
|
|
|
3632 |
|
|
if ((code & 0xfc) == 0xcc)
|
3633 |
|
|
code = 0x2c + (code & 0x03);
|
3634 |
|
|
else if ((code & 0xfc) == 0xdc)
|
3635 |
|
|
code = 0x24 + (code & 0x03);
|
3636 |
|
|
else if ((code & 0xfc) == 0xa4)
|
3637 |
|
|
code = 0x30 + (code & 0x03);
|
3638 |
|
|
else if ((code & 0xfc) == 0xa8)
|
3639 |
|
|
code = 0x34 + (code & 0x03);
|
3640 |
|
|
else if ((code & 0xfc) == 0xac)
|
3641 |
|
|
code = 0x38 + (code & 0x03);
|
3642 |
|
|
else
|
3643 |
|
|
abort ();
|
3644 |
|
|
|
3645 |
|
|
/* Fix the opcode. */
|
3646 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
|
3647 |
|
|
|
3648 |
|
|
/* Fix the relocation's type. */
|
3649 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
3650 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
3651 |
|
|
== (int) R_MN10300_GOTOFF32)
|
3652 |
|
|
? R_MN10300_GOTOFF16
|
3653 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
3654 |
|
|
== (int) R_MN10300_GOT32)
|
3655 |
|
|
? R_MN10300_GOT16
|
3656 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
3657 |
|
|
== (int) R_MN10300_GOTPC32)
|
3658 |
|
|
? R_MN10300_GOTPC16 :
|
3659 |
|
|
R_MN10300_16);
|
3660 |
|
|
|
3661 |
|
|
/* The opcode got shorter too, so we have to fix the
|
3662 |
|
|
addend and offset too! */
|
3663 |
|
|
irel->r_offset -= 1;
|
3664 |
|
|
|
3665 |
|
|
/* Delete three bytes of data. */
|
3666 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
3667 |
|
|
irel->r_offset + 1, 3))
|
3668 |
|
|
goto error_return;
|
3669 |
|
|
|
3670 |
|
|
/* That will change things, so, we should relax again.
|
3671 |
|
|
Note that this is not required, and it may be slow. */
|
3672 |
|
|
*again = TRUE;
|
3673 |
|
|
break;
|
3674 |
|
|
|
3675 |
|
|
/* mov (abs32),an -> mov (abs16),an
|
3676 |
|
|
mov (d32,sp),an -> mov (d16,sp),an
|
3677 |
|
|
mov (d32,sp),dn -> mov (d16,sp),dn
|
3678 |
|
|
movbu (d32,sp),dn -> movbu (d16,sp),dn
|
3679 |
|
|
movhu (d32,sp),dn -> movhu (d16,sp),dn
|
3680 |
|
|
add imm32,dn -> add imm16,dn
|
3681 |
|
|
cmp imm32,dn -> cmp imm16,dn
|
3682 |
|
|
add imm32,an -> add imm16,an
|
3683 |
|
|
cmp imm32,an -> cmp imm16,an
|
3684 |
|
|
and imm32,dn -> and imm16,dn
|
3685 |
|
|
or imm32,dn -> or imm16,dn
|
3686 |
|
|
xor imm32,dn -> xor imm16,dn
|
3687 |
|
|
btst imm32,dn -> btst imm16,dn */
|
3688 |
|
|
|
3689 |
|
|
case 0xa0:
|
3690 |
|
|
case 0xb0:
|
3691 |
|
|
case 0xb1:
|
3692 |
|
|
case 0xb2:
|
3693 |
|
|
case 0xb3:
|
3694 |
|
|
case 0xc0:
|
3695 |
|
|
case 0xc8:
|
3696 |
|
|
|
3697 |
|
|
case 0xd0:
|
3698 |
|
|
case 0xd8:
|
3699 |
|
|
case 0xe0:
|
3700 |
|
|
case 0xe1:
|
3701 |
|
|
case 0xe2:
|
3702 |
|
|
case 0xe3:
|
3703 |
|
|
/* cmp imm16, an zero-extends the immediate. */
|
3704 |
|
|
if (code == 0xdc
|
3705 |
|
|
&& (long) value < 0)
|
3706 |
|
|
continue;
|
3707 |
|
|
|
3708 |
|
|
/* So do sp-based offsets. */
|
3709 |
|
|
if (code >= 0xb0 && code <= 0xb3
|
3710 |
|
|
&& (long) value < 0)
|
3711 |
|
|
continue;
|
3712 |
|
|
|
3713 |
|
|
/* Note that we've changed the relocation contents, etc. */
|
3714 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
3715 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
3716 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
3717 |
|
|
|
3718 |
|
|
/* Fix the opcode. */
|
3719 |
|
|
bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
|
3720 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
|
3721 |
|
|
|
3722 |
|
|
/* Fix the relocation's type. */
|
3723 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
3724 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
3725 |
|
|
== (int) R_MN10300_GOTOFF32)
|
3726 |
|
|
? R_MN10300_GOTOFF16
|
3727 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
3728 |
|
|
== (int) R_MN10300_GOT32)
|
3729 |
|
|
? R_MN10300_GOT16
|
3730 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
3731 |
|
|
== (int) R_MN10300_GOTPC32)
|
3732 |
|
|
? R_MN10300_GOTPC16 :
|
3733 |
|
|
R_MN10300_16);
|
3734 |
|
|
|
3735 |
|
|
/* Delete two bytes of data. */
|
3736 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
3737 |
|
|
irel->r_offset + 2, 2))
|
3738 |
|
|
goto error_return;
|
3739 |
|
|
|
3740 |
|
|
/* That will change things, so, we should relax again.
|
3741 |
|
|
Note that this is not required, and it may be slow. */
|
3742 |
|
|
*again = TRUE;
|
3743 |
|
|
break;
|
3744 |
|
|
}
|
3745 |
|
|
else if (code == 0xfe)
|
3746 |
|
|
{
|
3747 |
|
|
/* add imm32,sp -> add imm16,sp */
|
3748 |
|
|
|
3749 |
|
|
/* Note that we've changed the relocation contents, etc. */
|
3750 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
3751 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
3752 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
3753 |
|
|
|
3754 |
|
|
/* Fix the opcode. */
|
3755 |
|
|
bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
|
3756 |
|
|
bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1);
|
3757 |
|
|
|
3758 |
|
|
/* Fix the relocation's type. */
|
3759 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
3760 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
3761 |
|
|
== (int) R_MN10300_GOT32)
|
3762 |
|
|
? R_MN10300_GOT16
|
3763 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
3764 |
|
|
== (int) R_MN10300_GOTOFF32)
|
3765 |
|
|
? R_MN10300_GOTOFF16
|
3766 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
3767 |
|
|
== (int) R_MN10300_GOTPC32)
|
3768 |
|
|
? R_MN10300_GOTPC16 :
|
3769 |
|
|
R_MN10300_16);
|
3770 |
|
|
|
3771 |
|
|
/* Delete two bytes of data. */
|
3772 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
3773 |
|
|
irel->r_offset + 2, 2))
|
3774 |
|
|
goto error_return;
|
3775 |
|
|
|
3776 |
|
|
/* That will change things, so, we should relax again.
|
3777 |
|
|
Note that this is not required, and it may be slow. */
|
3778 |
|
|
*again = TRUE;
|
3779 |
|
|
break;
|
3780 |
|
|
}
|
3781 |
|
|
}
|
3782 |
|
|
}
|
3783 |
|
|
}
|
3784 |
|
|
|
3785 |
|
|
if (isymbuf != NULL
|
3786 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
3787 |
|
|
{
|
3788 |
|
|
if (! link_info->keep_memory)
|
3789 |
|
|
free (isymbuf);
|
3790 |
|
|
else
|
3791 |
|
|
{
|
3792 |
|
|
/* Cache the symbols for elf_link_input_bfd. */
|
3793 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
3794 |
|
|
}
|
3795 |
|
|
}
|
3796 |
|
|
|
3797 |
|
|
if (contents != NULL
|
3798 |
|
|
&& elf_section_data (sec)->this_hdr.contents != contents)
|
3799 |
|
|
{
|
3800 |
|
|
if (! link_info->keep_memory)
|
3801 |
|
|
free (contents);
|
3802 |
|
|
else
|
3803 |
|
|
{
|
3804 |
|
|
/* Cache the section contents for elf_link_input_bfd. */
|
3805 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
3806 |
|
|
}
|
3807 |
|
|
}
|
3808 |
|
|
|
3809 |
|
|
if (internal_relocs != NULL
|
3810 |
|
|
&& elf_section_data (sec)->relocs != internal_relocs)
|
3811 |
|
|
free (internal_relocs);
|
3812 |
|
|
|
3813 |
|
|
return TRUE;
|
3814 |
|
|
|
3815 |
|
|
error_return:
|
3816 |
|
|
if (isymbuf != NULL
|
3817 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
3818 |
|
|
free (isymbuf);
|
3819 |
|
|
if (contents != NULL
|
3820 |
|
|
&& elf_section_data (section)->this_hdr.contents != contents)
|
3821 |
|
|
free (contents);
|
3822 |
|
|
if (internal_relocs != NULL
|
3823 |
|
|
&& elf_section_data (section)->relocs != internal_relocs)
|
3824 |
|
|
free (internal_relocs);
|
3825 |
|
|
|
3826 |
|
|
return FALSE;
|
3827 |
|
|
}
|
3828 |
|
|
|
3829 |
|
|
/* This is a version of bfd_generic_get_relocated_section_contents
|
3830 |
|
|
which uses mn10300_elf_relocate_section. */
|
3831 |
|
|
|
3832 |
|
|
static bfd_byte *
|
3833 |
|
|
mn10300_elf_get_relocated_section_contents (bfd *output_bfd,
|
3834 |
|
|
struct bfd_link_info *link_info,
|
3835 |
|
|
struct bfd_link_order *link_order,
|
3836 |
|
|
bfd_byte *data,
|
3837 |
|
|
bfd_boolean relocatable,
|
3838 |
|
|
asymbol **symbols)
|
3839 |
|
|
{
|
3840 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
3841 |
|
|
asection *input_section = link_order->u.indirect.section;
|
3842 |
|
|
bfd *input_bfd = input_section->owner;
|
3843 |
|
|
asection **sections = NULL;
|
3844 |
|
|
Elf_Internal_Rela *internal_relocs = NULL;
|
3845 |
|
|
Elf_Internal_Sym *isymbuf = NULL;
|
3846 |
|
|
|
3847 |
|
|
/* We only need to handle the case of relaxing, or of having a
|
3848 |
|
|
particular set of section contents, specially. */
|
3849 |
|
|
if (relocatable
|
3850 |
|
|
|| elf_section_data (input_section)->this_hdr.contents == NULL)
|
3851 |
|
|
return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
|
3852 |
|
|
link_order, data,
|
3853 |
|
|
relocatable,
|
3854 |
|
|
symbols);
|
3855 |
|
|
|
3856 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
3857 |
|
|
|
3858 |
|
|
memcpy (data, elf_section_data (input_section)->this_hdr.contents,
|
3859 |
|
|
(size_t) input_section->size);
|
3860 |
|
|
|
3861 |
|
|
if ((input_section->flags & SEC_RELOC) != 0
|
3862 |
|
|
&& input_section->reloc_count > 0)
|
3863 |
|
|
{
|
3864 |
|
|
asection **secpp;
|
3865 |
|
|
Elf_Internal_Sym *isym, *isymend;
|
3866 |
|
|
bfd_size_type amt;
|
3867 |
|
|
|
3868 |
|
|
internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section,
|
3869 |
|
|
NULL, NULL, FALSE);
|
3870 |
|
|
if (internal_relocs == NULL)
|
3871 |
|
|
goto error_return;
|
3872 |
|
|
|
3873 |
|
|
if (symtab_hdr->sh_info != 0)
|
3874 |
|
|
{
|
3875 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
3876 |
|
|
if (isymbuf == NULL)
|
3877 |
|
|
isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
|
3878 |
|
|
symtab_hdr->sh_info, 0,
|
3879 |
|
|
NULL, NULL, NULL);
|
3880 |
|
|
if (isymbuf == NULL)
|
3881 |
|
|
goto error_return;
|
3882 |
|
|
}
|
3883 |
|
|
|
3884 |
|
|
amt = symtab_hdr->sh_info;
|
3885 |
|
|
amt *= sizeof (asection *);
|
3886 |
|
|
sections = bfd_malloc (amt);
|
3887 |
|
|
if (sections == NULL && amt != 0)
|
3888 |
|
|
goto error_return;
|
3889 |
|
|
|
3890 |
|
|
isymend = isymbuf + symtab_hdr->sh_info;
|
3891 |
|
|
for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
|
3892 |
|
|
{
|
3893 |
|
|
asection *isec;
|
3894 |
|
|
|
3895 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
3896 |
|
|
isec = bfd_und_section_ptr;
|
3897 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
3898 |
|
|
isec = bfd_abs_section_ptr;
|
3899 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
3900 |
|
|
isec = bfd_com_section_ptr;
|
3901 |
|
|
else
|
3902 |
|
|
isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
|
3903 |
|
|
|
3904 |
|
|
*secpp = isec;
|
3905 |
|
|
}
|
3906 |
|
|
|
3907 |
|
|
if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd,
|
3908 |
|
|
input_section, data, internal_relocs,
|
3909 |
|
|
isymbuf, sections))
|
3910 |
|
|
goto error_return;
|
3911 |
|
|
|
3912 |
|
|
if (sections != NULL)
|
3913 |
|
|
free (sections);
|
3914 |
|
|
if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
|
3915 |
|
|
free (isymbuf);
|
3916 |
|
|
if (internal_relocs != elf_section_data (input_section)->relocs)
|
3917 |
|
|
free (internal_relocs);
|
3918 |
|
|
}
|
3919 |
|
|
|
3920 |
|
|
return data;
|
3921 |
|
|
|
3922 |
|
|
error_return:
|
3923 |
|
|
if (sections != NULL)
|
3924 |
|
|
free (sections);
|
3925 |
|
|
if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
|
3926 |
|
|
free (isymbuf);
|
3927 |
|
|
if (internal_relocs != NULL
|
3928 |
|
|
&& internal_relocs != elf_section_data (input_section)->relocs)
|
3929 |
|
|
free (internal_relocs);
|
3930 |
|
|
return NULL;
|
3931 |
|
|
}
|
3932 |
|
|
|
3933 |
|
|
/* Assorted hash table functions. */
|
3934 |
|
|
|
3935 |
|
|
/* Initialize an entry in the link hash table. */
|
3936 |
|
|
|
3937 |
|
|
/* Create an entry in an MN10300 ELF linker hash table. */
|
3938 |
|
|
|
3939 |
|
|
static struct bfd_hash_entry *
|
3940 |
|
|
elf32_mn10300_link_hash_newfunc (struct bfd_hash_entry *entry,
|
3941 |
|
|
struct bfd_hash_table *table,
|
3942 |
|
|
const char *string)
|
3943 |
|
|
{
|
3944 |
|
|
struct elf32_mn10300_link_hash_entry *ret =
|
3945 |
|
|
(struct elf32_mn10300_link_hash_entry *) entry;
|
3946 |
|
|
|
3947 |
|
|
/* Allocate the structure if it has not already been allocated by a
|
3948 |
|
|
subclass. */
|
3949 |
|
|
if (ret == NULL)
|
3950 |
|
|
ret = (struct elf32_mn10300_link_hash_entry *)
|
3951 |
|
|
bfd_hash_allocate (table, sizeof (* ret));
|
3952 |
|
|
if (ret == NULL)
|
3953 |
|
|
return (struct bfd_hash_entry *) ret;
|
3954 |
|
|
|
3955 |
|
|
/* Call the allocation method of the superclass. */
|
3956 |
|
|
ret = (struct elf32_mn10300_link_hash_entry *)
|
3957 |
|
|
_bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
|
3958 |
|
|
table, string);
|
3959 |
|
|
if (ret != NULL)
|
3960 |
|
|
{
|
3961 |
|
|
ret->direct_calls = 0;
|
3962 |
|
|
ret->stack_size = 0;
|
3963 |
|
|
ret->movm_args = 0;
|
3964 |
|
|
ret->movm_stack_size = 0;
|
3965 |
|
|
ret->flags = 0;
|
3966 |
|
|
ret->value = 0;
|
3967 |
|
|
}
|
3968 |
|
|
|
3969 |
|
|
return (struct bfd_hash_entry *) ret;
|
3970 |
|
|
}
|
3971 |
|
|
|
3972 |
|
|
/* Create an mn10300 ELF linker hash table. */
|
3973 |
|
|
|
3974 |
|
|
static struct bfd_link_hash_table *
|
3975 |
|
|
elf32_mn10300_link_hash_table_create (bfd *abfd)
|
3976 |
|
|
{
|
3977 |
|
|
struct elf32_mn10300_link_hash_table *ret;
|
3978 |
|
|
bfd_size_type amt = sizeof (* ret);
|
3979 |
|
|
|
3980 |
|
|
ret = bfd_malloc (amt);
|
3981 |
|
|
if (ret == NULL)
|
3982 |
|
|
return NULL;
|
3983 |
|
|
|
3984 |
|
|
if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
|
3985 |
|
|
elf32_mn10300_link_hash_newfunc,
|
3986 |
|
|
sizeof (struct elf32_mn10300_link_hash_entry)))
|
3987 |
|
|
{
|
3988 |
|
|
free (ret);
|
3989 |
|
|
return NULL;
|
3990 |
|
|
}
|
3991 |
|
|
|
3992 |
|
|
ret->flags = 0;
|
3993 |
|
|
amt = sizeof (struct elf_link_hash_table);
|
3994 |
|
|
ret->static_hash_table = bfd_malloc (amt);
|
3995 |
|
|
if (ret->static_hash_table == NULL)
|
3996 |
|
|
{
|
3997 |
|
|
free (ret);
|
3998 |
|
|
return NULL;
|
3999 |
|
|
}
|
4000 |
|
|
|
4001 |
|
|
if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd,
|
4002 |
|
|
elf32_mn10300_link_hash_newfunc,
|
4003 |
|
|
sizeof (struct elf32_mn10300_link_hash_entry)))
|
4004 |
|
|
{
|
4005 |
|
|
free (ret->static_hash_table);
|
4006 |
|
|
free (ret);
|
4007 |
|
|
return NULL;
|
4008 |
|
|
}
|
4009 |
|
|
return & ret->root.root;
|
4010 |
|
|
}
|
4011 |
|
|
|
4012 |
|
|
/* Free an mn10300 ELF linker hash table. */
|
4013 |
|
|
|
4014 |
|
|
static void
|
4015 |
|
|
elf32_mn10300_link_hash_table_free (struct bfd_link_hash_table *hash)
|
4016 |
|
|
{
|
4017 |
|
|
struct elf32_mn10300_link_hash_table *ret
|
4018 |
|
|
= (struct elf32_mn10300_link_hash_table *) hash;
|
4019 |
|
|
|
4020 |
|
|
_bfd_generic_link_hash_table_free
|
4021 |
|
|
((struct bfd_link_hash_table *) ret->static_hash_table);
|
4022 |
|
|
_bfd_generic_link_hash_table_free
|
4023 |
|
|
((struct bfd_link_hash_table *) ret);
|
4024 |
|
|
}
|
4025 |
|
|
|
4026 |
|
|
static unsigned long
|
4027 |
|
|
elf_mn10300_mach (flagword flags)
|
4028 |
|
|
{
|
4029 |
|
|
switch (flags & EF_MN10300_MACH)
|
4030 |
|
|
{
|
4031 |
|
|
case E_MN10300_MACH_MN10300:
|
4032 |
|
|
default:
|
4033 |
|
|
return bfd_mach_mn10300;
|
4034 |
|
|
|
4035 |
|
|
case E_MN10300_MACH_AM33:
|
4036 |
|
|
return bfd_mach_am33;
|
4037 |
|
|
|
4038 |
|
|
case E_MN10300_MACH_AM33_2:
|
4039 |
|
|
return bfd_mach_am33_2;
|
4040 |
|
|
}
|
4041 |
|
|
}
|
4042 |
|
|
|
4043 |
|
|
/* The final processing done just before writing out a MN10300 ELF object
|
4044 |
|
|
file. This gets the MN10300 architecture right based on the machine
|
4045 |
|
|
number. */
|
4046 |
|
|
|
4047 |
|
|
static void
|
4048 |
|
|
_bfd_mn10300_elf_final_write_processing (bfd *abfd,
|
4049 |
|
|
bfd_boolean linker ATTRIBUTE_UNUSED)
|
4050 |
|
|
{
|
4051 |
|
|
unsigned long val;
|
4052 |
|
|
|
4053 |
|
|
switch (bfd_get_mach (abfd))
|
4054 |
|
|
{
|
4055 |
|
|
default:
|
4056 |
|
|
case bfd_mach_mn10300:
|
4057 |
|
|
val = E_MN10300_MACH_MN10300;
|
4058 |
|
|
break;
|
4059 |
|
|
|
4060 |
|
|
case bfd_mach_am33:
|
4061 |
|
|
val = E_MN10300_MACH_AM33;
|
4062 |
|
|
break;
|
4063 |
|
|
|
4064 |
|
|
case bfd_mach_am33_2:
|
4065 |
|
|
val = E_MN10300_MACH_AM33_2;
|
4066 |
|
|
break;
|
4067 |
|
|
}
|
4068 |
|
|
|
4069 |
|
|
elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH);
|
4070 |
|
|
elf_elfheader (abfd)->e_flags |= val;
|
4071 |
|
|
}
|
4072 |
|
|
|
4073 |
|
|
static bfd_boolean
|
4074 |
|
|
_bfd_mn10300_elf_object_p (bfd *abfd)
|
4075 |
|
|
{
|
4076 |
|
|
bfd_default_set_arch_mach (abfd, bfd_arch_mn10300,
|
4077 |
|
|
elf_mn10300_mach (elf_elfheader (abfd)->e_flags));
|
4078 |
|
|
return TRUE;
|
4079 |
|
|
}
|
4080 |
|
|
|
4081 |
|
|
/* Merge backend specific data from an object file to the output
|
4082 |
|
|
object file when linking. */
|
4083 |
|
|
|
4084 |
|
|
static bfd_boolean
|
4085 |
|
|
_bfd_mn10300_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
|
4086 |
|
|
{
|
4087 |
|
|
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
4088 |
|
|
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
4089 |
|
|
return TRUE;
|
4090 |
|
|
|
4091 |
|
|
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
|
4092 |
|
|
&& bfd_get_mach (obfd) < bfd_get_mach (ibfd))
|
4093 |
|
|
{
|
4094 |
|
|
if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
|
4095 |
|
|
bfd_get_mach (ibfd)))
|
4096 |
|
|
return FALSE;
|
4097 |
|
|
}
|
4098 |
|
|
|
4099 |
|
|
return TRUE;
|
4100 |
|
|
}
|
4101 |
|
|
|
4102 |
|
|
#define PLT0_ENTRY_SIZE 15
|
4103 |
|
|
#define PLT_ENTRY_SIZE 20
|
4104 |
|
|
#define PIC_PLT_ENTRY_SIZE 24
|
4105 |
|
|
|
4106 |
|
|
static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] =
|
4107 |
|
|
{
|
4108 |
|
|
0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
|
4109 |
|
|
0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
|
4110 |
|
|
0xf0, 0xf4, /* jmp (a0) */
|
4111 |
|
|
};
|
4112 |
|
|
|
4113 |
|
|
static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] =
|
4114 |
|
|
{
|
4115 |
|
|
0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
|
4116 |
|
|
0xf0, 0xf4, /* jmp (a0) */
|
4117 |
|
|
0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
|
4118 |
|
|
0xdc, 0, 0, 0, 0, /* jmp .plt0 */
|
4119 |
|
|
};
|
4120 |
|
|
|
4121 |
|
|
static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] =
|
4122 |
|
|
{
|
4123 |
|
|
0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
|
4124 |
|
|
0xf0, 0xf4, /* jmp (a0) */
|
4125 |
|
|
0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
|
4126 |
|
|
0xf8, 0x22, 8, /* mov (8,a2),a0 */
|
4127 |
|
|
0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
|
4128 |
|
|
0xf0, 0xf4, /* jmp (a0) */
|
4129 |
|
|
};
|
4130 |
|
|
|
4131 |
|
|
/* Return size of the first PLT entry. */
|
4132 |
|
|
#define elf_mn10300_sizeof_plt0(info) \
|
4133 |
|
|
(info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
|
4134 |
|
|
|
4135 |
|
|
/* Return size of a PLT entry. */
|
4136 |
|
|
#define elf_mn10300_sizeof_plt(info) \
|
4137 |
|
|
(info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
|
4138 |
|
|
|
4139 |
|
|
/* Return offset of the PLT0 address in an absolute PLT entry. */
|
4140 |
|
|
#define elf_mn10300_plt_plt0_offset(info) 16
|
4141 |
|
|
|
4142 |
|
|
/* Return offset of the linker in PLT0 entry. */
|
4143 |
|
|
#define elf_mn10300_plt0_linker_offset(info) 2
|
4144 |
|
|
|
4145 |
|
|
/* Return offset of the GOT id in PLT0 entry. */
|
4146 |
|
|
#define elf_mn10300_plt0_gotid_offset(info) 9
|
4147 |
|
|
|
4148 |
|
|
/* Return offset of the temporary in PLT entry. */
|
4149 |
|
|
#define elf_mn10300_plt_temp_offset(info) 8
|
4150 |
|
|
|
4151 |
|
|
/* Return offset of the symbol in PLT entry. */
|
4152 |
|
|
#define elf_mn10300_plt_symbol_offset(info) 2
|
4153 |
|
|
|
4154 |
|
|
/* Return offset of the relocation in PLT entry. */
|
4155 |
|
|
#define elf_mn10300_plt_reloc_offset(info) 11
|
4156 |
|
|
|
4157 |
|
|
/* The name of the dynamic interpreter. This is put in the .interp
|
4158 |
|
|
section. */
|
4159 |
|
|
|
4160 |
|
|
#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
|
4161 |
|
|
|
4162 |
|
|
/* Create dynamic sections when linking against a dynamic object. */
|
4163 |
|
|
|
4164 |
|
|
static bfd_boolean
|
4165 |
|
|
_bfd_mn10300_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
|
4166 |
|
|
{
|
4167 |
|
|
flagword flags;
|
4168 |
|
|
asection * s;
|
4169 |
|
|
const struct elf_backend_data * bed = get_elf_backend_data (abfd);
|
4170 |
|
|
int ptralign = 0;
|
4171 |
|
|
|
4172 |
|
|
switch (bed->s->arch_size)
|
4173 |
|
|
{
|
4174 |
|
|
case 32:
|
4175 |
|
|
ptralign = 2;
|
4176 |
|
|
break;
|
4177 |
|
|
|
4178 |
|
|
case 64:
|
4179 |
|
|
ptralign = 3;
|
4180 |
|
|
break;
|
4181 |
|
|
|
4182 |
|
|
default:
|
4183 |
|
|
bfd_set_error (bfd_error_bad_value);
|
4184 |
|
|
return FALSE;
|
4185 |
|
|
}
|
4186 |
|
|
|
4187 |
|
|
/* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
|
4188 |
|
|
.rel[a].bss sections. */
|
4189 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
|
4190 |
|
|
| SEC_LINKER_CREATED);
|
4191 |
|
|
|
4192 |
|
|
s = bfd_make_section_with_flags (abfd,
|
4193 |
|
|
(bed->default_use_rela_p
|
4194 |
|
|
? ".rela.plt" : ".rel.plt"),
|
4195 |
|
|
flags | SEC_READONLY);
|
4196 |
|
|
if (s == NULL
|
4197 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
4198 |
|
|
return FALSE;
|
4199 |
|
|
|
4200 |
|
|
if (! _bfd_mn10300_elf_create_got_section (abfd, info))
|
4201 |
|
|
return FALSE;
|
4202 |
|
|
|
4203 |
|
|
{
|
4204 |
|
|
const char * secname;
|
4205 |
|
|
char * relname;
|
4206 |
|
|
flagword secflags;
|
4207 |
|
|
asection * sec;
|
4208 |
|
|
|
4209 |
|
|
for (sec = abfd->sections; sec; sec = sec->next)
|
4210 |
|
|
{
|
4211 |
|
|
secflags = bfd_get_section_flags (abfd, sec);
|
4212 |
|
|
if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
|
4213 |
|
|
|| ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
|
4214 |
|
|
continue;
|
4215 |
|
|
|
4216 |
|
|
secname = bfd_get_section_name (abfd, sec);
|
4217 |
|
|
relname = bfd_malloc (strlen (secname) + 6);
|
4218 |
|
|
strcpy (relname, ".rela");
|
4219 |
|
|
strcat (relname, secname);
|
4220 |
|
|
|
4221 |
|
|
s = bfd_make_section_with_flags (abfd, relname,
|
4222 |
|
|
flags | SEC_READONLY);
|
4223 |
|
|
if (s == NULL
|
4224 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
4225 |
|
|
return FALSE;
|
4226 |
|
|
}
|
4227 |
|
|
}
|
4228 |
|
|
|
4229 |
|
|
if (bed->want_dynbss)
|
4230 |
|
|
{
|
4231 |
|
|
/* The .dynbss section is a place to put symbols which are defined
|
4232 |
|
|
by dynamic objects, are referenced by regular objects, and are
|
4233 |
|
|
not functions. We must allocate space for them in the process
|
4234 |
|
|
image and use a R_*_COPY reloc to tell the dynamic linker to
|
4235 |
|
|
initialize them at run time. The linker script puts the .dynbss
|
4236 |
|
|
section into the .bss section of the final image. */
|
4237 |
|
|
s = bfd_make_section_with_flags (abfd, ".dynbss",
|
4238 |
|
|
SEC_ALLOC | SEC_LINKER_CREATED);
|
4239 |
|
|
if (s == NULL)
|
4240 |
|
|
return FALSE;
|
4241 |
|
|
|
4242 |
|
|
/* The .rel[a].bss section holds copy relocs. This section is not
|
4243 |
|
|
normally needed. We need to create it here, though, so that the
|
4244 |
|
|
linker will map it to an output section. We can't just create it
|
4245 |
|
|
only if we need it, because we will not know whether we need it
|
4246 |
|
|
until we have seen all the input files, and the first time the
|
4247 |
|
|
main linker code calls BFD after examining all the input files
|
4248 |
|
|
(size_dynamic_sections) the input sections have already been
|
4249 |
|
|
mapped to the output sections. If the section turns out not to
|
4250 |
|
|
be needed, we can discard it later. We will never need this
|
4251 |
|
|
section when generating a shared object, since they do not use
|
4252 |
|
|
copy relocs. */
|
4253 |
|
|
if (! info->shared)
|
4254 |
|
|
{
|
4255 |
|
|
s = bfd_make_section_with_flags (abfd,
|
4256 |
|
|
(bed->default_use_rela_p
|
4257 |
|
|
? ".rela.bss" : ".rel.bss"),
|
4258 |
|
|
flags | SEC_READONLY);
|
4259 |
|
|
if (s == NULL
|
4260 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
4261 |
|
|
return FALSE;
|
4262 |
|
|
}
|
4263 |
|
|
}
|
4264 |
|
|
|
4265 |
|
|
return TRUE;
|
4266 |
|
|
}
|
4267 |
|
|
|
4268 |
|
|
/* Adjust a symbol defined by a dynamic object and referenced by a
|
4269 |
|
|
regular object. The current definition is in some section of the
|
4270 |
|
|
dynamic object, but we're not including those sections. We have to
|
4271 |
|
|
change the definition to something the rest of the link can
|
4272 |
|
|
understand. */
|
4273 |
|
|
|
4274 |
|
|
static bfd_boolean
|
4275 |
|
|
_bfd_mn10300_elf_adjust_dynamic_symbol (struct bfd_link_info * info,
|
4276 |
|
|
struct elf_link_hash_entry * h)
|
4277 |
|
|
{
|
4278 |
|
|
bfd * dynobj;
|
4279 |
|
|
asection * s;
|
4280 |
|
|
|
4281 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
4282 |
|
|
|
4283 |
|
|
/* Make sure we know what is going on here. */
|
4284 |
|
|
BFD_ASSERT (dynobj != NULL
|
4285 |
|
|
&& (h->needs_plt
|
4286 |
|
|
|| h->u.weakdef != NULL
|
4287 |
|
|
|| (h->def_dynamic
|
4288 |
|
|
&& h->ref_regular
|
4289 |
|
|
&& !h->def_regular)));
|
4290 |
|
|
|
4291 |
|
|
/* If this is a function, put it in the procedure linkage table. We
|
4292 |
|
|
will fill in the contents of the procedure linkage table later,
|
4293 |
|
|
when we know the address of the .got section. */
|
4294 |
|
|
if (h->type == STT_FUNC
|
4295 |
|
|
|| h->needs_plt)
|
4296 |
|
|
{
|
4297 |
|
|
if (! info->shared
|
4298 |
|
|
&& !h->def_dynamic
|
4299 |
|
|
&& !h->ref_dynamic)
|
4300 |
|
|
{
|
4301 |
|
|
/* This case can occur if we saw a PLT reloc in an input
|
4302 |
|
|
file, but the symbol was never referred to by a dynamic
|
4303 |
|
|
object. In such a case, we don't actually need to build
|
4304 |
|
|
a procedure linkage table, and we can just do a REL32
|
4305 |
|
|
reloc instead. */
|
4306 |
|
|
BFD_ASSERT (h->needs_plt);
|
4307 |
|
|
return TRUE;
|
4308 |
|
|
}
|
4309 |
|
|
|
4310 |
|
|
/* Make sure this symbol is output as a dynamic symbol. */
|
4311 |
|
|
if (h->dynindx == -1)
|
4312 |
|
|
{
|
4313 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
4314 |
|
|
return FALSE;
|
4315 |
|
|
}
|
4316 |
|
|
|
4317 |
|
|
s = bfd_get_section_by_name (dynobj, ".plt");
|
4318 |
|
|
BFD_ASSERT (s != NULL);
|
4319 |
|
|
|
4320 |
|
|
/* If this is the first .plt entry, make room for the special
|
4321 |
|
|
first entry. */
|
4322 |
|
|
if (s->size == 0)
|
4323 |
|
|
s->size += elf_mn10300_sizeof_plt0 (info);
|
4324 |
|
|
|
4325 |
|
|
/* If this symbol is not defined in a regular file, and we are
|
4326 |
|
|
not generating a shared library, then set the symbol to this
|
4327 |
|
|
location in the .plt. This is required to make function
|
4328 |
|
|
pointers compare as equal between the normal executable and
|
4329 |
|
|
the shared library. */
|
4330 |
|
|
if (! info->shared
|
4331 |
|
|
&& !h->def_regular)
|
4332 |
|
|
{
|
4333 |
|
|
h->root.u.def.section = s;
|
4334 |
|
|
h->root.u.def.value = s->size;
|
4335 |
|
|
}
|
4336 |
|
|
|
4337 |
|
|
h->plt.offset = s->size;
|
4338 |
|
|
|
4339 |
|
|
/* Make room for this entry. */
|
4340 |
|
|
s->size += elf_mn10300_sizeof_plt (info);
|
4341 |
|
|
|
4342 |
|
|
/* We also need to make an entry in the .got.plt section, which
|
4343 |
|
|
will be placed in the .got section by the linker script. */
|
4344 |
|
|
s = bfd_get_section_by_name (dynobj, ".got.plt");
|
4345 |
|
|
BFD_ASSERT (s != NULL);
|
4346 |
|
|
s->size += 4;
|
4347 |
|
|
|
4348 |
|
|
/* We also need to make an entry in the .rela.plt section. */
|
4349 |
|
|
s = bfd_get_section_by_name (dynobj, ".rela.plt");
|
4350 |
|
|
BFD_ASSERT (s != NULL);
|
4351 |
|
|
s->size += sizeof (Elf32_External_Rela);
|
4352 |
|
|
|
4353 |
|
|
return TRUE;
|
4354 |
|
|
}
|
4355 |
|
|
|
4356 |
|
|
/* If this is a weak symbol, and there is a real definition, the
|
4357 |
|
|
processor independent code will have arranged for us to see the
|
4358 |
|
|
real definition first, and we can just use the same value. */
|
4359 |
|
|
if (h->u.weakdef != NULL)
|
4360 |
|
|
{
|
4361 |
|
|
BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
|
4362 |
|
|
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
|
4363 |
|
|
h->root.u.def.section = h->u.weakdef->root.u.def.section;
|
4364 |
|
|
h->root.u.def.value = h->u.weakdef->root.u.def.value;
|
4365 |
|
|
return TRUE;
|
4366 |
|
|
}
|
4367 |
|
|
|
4368 |
|
|
/* This is a reference to a symbol defined by a dynamic object which
|
4369 |
|
|
is not a function. */
|
4370 |
|
|
|
4371 |
|
|
/* If we are creating a shared library, we must presume that the
|
4372 |
|
|
only references to the symbol are via the global offset table.
|
4373 |
|
|
For such cases we need not do anything here; the relocations will
|
4374 |
|
|
be handled correctly by relocate_section. */
|
4375 |
|
|
if (info->shared)
|
4376 |
|
|
return TRUE;
|
4377 |
|
|
|
4378 |
|
|
/* If there are no references to this symbol that do not use the
|
4379 |
|
|
GOT, we don't need to generate a copy reloc. */
|
4380 |
|
|
if (!h->non_got_ref)
|
4381 |
|
|
return TRUE;
|
4382 |
|
|
|
4383 |
|
|
if (h->size == 0)
|
4384 |
|
|
{
|
4385 |
|
|
(*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
|
4386 |
|
|
h->root.root.string);
|
4387 |
|
|
return TRUE;
|
4388 |
|
|
}
|
4389 |
|
|
|
4390 |
|
|
/* We must allocate the symbol in our .dynbss section, which will
|
4391 |
|
|
become part of the .bss section of the executable. There will be
|
4392 |
|
|
an entry for this symbol in the .dynsym section. The dynamic
|
4393 |
|
|
object will contain position independent code, so all references
|
4394 |
|
|
from the dynamic object to this symbol will go through the global
|
4395 |
|
|
offset table. The dynamic linker will use the .dynsym entry to
|
4396 |
|
|
determine the address it must put in the global offset table, so
|
4397 |
|
|
both the dynamic object and the regular object will refer to the
|
4398 |
|
|
same memory location for the variable. */
|
4399 |
|
|
|
4400 |
|
|
s = bfd_get_section_by_name (dynobj, ".dynbss");
|
4401 |
|
|
BFD_ASSERT (s != NULL);
|
4402 |
|
|
|
4403 |
|
|
/* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to
|
4404 |
|
|
copy the initial value out of the dynamic object and into the
|
4405 |
|
|
runtime process image. We need to remember the offset into the
|
4406 |
|
|
.rela.bss section we are going to use. */
|
4407 |
|
|
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
4408 |
|
|
{
|
4409 |
|
|
asection * srel;
|
4410 |
|
|
|
4411 |
|
|
srel = bfd_get_section_by_name (dynobj, ".rela.bss");
|
4412 |
|
|
BFD_ASSERT (srel != NULL);
|
4413 |
|
|
srel->size += sizeof (Elf32_External_Rela);
|
4414 |
|
|
h->needs_copy = 1;
|
4415 |
|
|
}
|
4416 |
|
|
|
4417 |
|
|
return _bfd_elf_adjust_dynamic_copy (h, s);
|
4418 |
|
|
}
|
4419 |
|
|
|
4420 |
|
|
/* Set the sizes of the dynamic sections. */
|
4421 |
|
|
|
4422 |
|
|
static bfd_boolean
|
4423 |
|
|
_bfd_mn10300_elf_size_dynamic_sections (bfd * output_bfd,
|
4424 |
|
|
struct bfd_link_info * info)
|
4425 |
|
|
{
|
4426 |
|
|
bfd * dynobj;
|
4427 |
|
|
asection * s;
|
4428 |
|
|
bfd_boolean plt;
|
4429 |
|
|
bfd_boolean relocs;
|
4430 |
|
|
bfd_boolean reltext;
|
4431 |
|
|
|
4432 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
4433 |
|
|
BFD_ASSERT (dynobj != NULL);
|
4434 |
|
|
|
4435 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
4436 |
|
|
{
|
4437 |
|
|
/* Set the contents of the .interp section to the interpreter. */
|
4438 |
|
|
if (info->executable)
|
4439 |
|
|
{
|
4440 |
|
|
s = bfd_get_section_by_name (dynobj, ".interp");
|
4441 |
|
|
BFD_ASSERT (s != NULL);
|
4442 |
|
|
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
|
4443 |
|
|
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
|
4444 |
|
|
}
|
4445 |
|
|
}
|
4446 |
|
|
else
|
4447 |
|
|
{
|
4448 |
|
|
/* We may have created entries in the .rela.got section.
|
4449 |
|
|
However, if we are not creating the dynamic sections, we will
|
4450 |
|
|
not actually use these entries. Reset the size of .rela.got,
|
4451 |
|
|
which will cause it to get stripped from the output file
|
4452 |
|
|
below. */
|
4453 |
|
|
s = bfd_get_section_by_name (dynobj, ".rela.got");
|
4454 |
|
|
if (s != NULL)
|
4455 |
|
|
s->size = 0;
|
4456 |
|
|
}
|
4457 |
|
|
|
4458 |
|
|
/* The check_relocs and adjust_dynamic_symbol entry points have
|
4459 |
|
|
determined the sizes of the various dynamic sections. Allocate
|
4460 |
|
|
memory for them. */
|
4461 |
|
|
plt = FALSE;
|
4462 |
|
|
relocs = FALSE;
|
4463 |
|
|
reltext = FALSE;
|
4464 |
|
|
for (s = dynobj->sections; s != NULL; s = s->next)
|
4465 |
|
|
{
|
4466 |
|
|
const char * name;
|
4467 |
|
|
|
4468 |
|
|
if ((s->flags & SEC_LINKER_CREATED) == 0)
|
4469 |
|
|
continue;
|
4470 |
|
|
|
4471 |
|
|
/* It's OK to base decisions on the section name, because none
|
4472 |
|
|
of the dynobj section names depend upon the input files. */
|
4473 |
|
|
name = bfd_get_section_name (dynobj, s);
|
4474 |
|
|
|
4475 |
|
|
if (streq (name, ".plt"))
|
4476 |
|
|
{
|
4477 |
|
|
/* Remember whether there is a PLT. */
|
4478 |
|
|
plt = s->size != 0;
|
4479 |
|
|
}
|
4480 |
|
|
else if (CONST_STRNEQ (name, ".rela"))
|
4481 |
|
|
{
|
4482 |
|
|
if (s->size != 0)
|
4483 |
|
|
{
|
4484 |
|
|
asection * target;
|
4485 |
|
|
|
4486 |
|
|
/* Remember whether there are any reloc sections other
|
4487 |
|
|
than .rela.plt. */
|
4488 |
|
|
if (! streq (name, ".rela.plt"))
|
4489 |
|
|
{
|
4490 |
|
|
const char * outname;
|
4491 |
|
|
|
4492 |
|
|
relocs = TRUE;
|
4493 |
|
|
|
4494 |
|
|
/* If this relocation section applies to a read only
|
4495 |
|
|
section, then we probably need a DT_TEXTREL
|
4496 |
|
|
entry. The entries in the .rela.plt section
|
4497 |
|
|
really apply to the .got section, which we
|
4498 |
|
|
created ourselves and so know is not readonly. */
|
4499 |
|
|
outname = bfd_get_section_name (output_bfd,
|
4500 |
|
|
s->output_section);
|
4501 |
|
|
target = bfd_get_section_by_name (output_bfd, outname + 5);
|
4502 |
|
|
if (target != NULL
|
4503 |
|
|
&& (target->flags & SEC_READONLY) != 0
|
4504 |
|
|
&& (target->flags & SEC_ALLOC) != 0)
|
4505 |
|
|
reltext = TRUE;
|
4506 |
|
|
}
|
4507 |
|
|
|
4508 |
|
|
/* We use the reloc_count field as a counter if we need
|
4509 |
|
|
to copy relocs into the output file. */
|
4510 |
|
|
s->reloc_count = 0;
|
4511 |
|
|
}
|
4512 |
|
|
}
|
4513 |
|
|
else if (! CONST_STRNEQ (name, ".got")
|
4514 |
|
|
&& ! streq (name, ".dynbss"))
|
4515 |
|
|
/* It's not one of our sections, so don't allocate space. */
|
4516 |
|
|
continue;
|
4517 |
|
|
|
4518 |
|
|
if (s->size == 0)
|
4519 |
|
|
{
|
4520 |
|
|
/* If we don't need this section, strip it from the
|
4521 |
|
|
output file. This is mostly to handle .rela.bss and
|
4522 |
|
|
.rela.plt. We must create both sections in
|
4523 |
|
|
create_dynamic_sections, because they must be created
|
4524 |
|
|
before the linker maps input sections to output
|
4525 |
|
|
sections. The linker does that before
|
4526 |
|
|
adjust_dynamic_symbol is called, and it is that
|
4527 |
|
|
function which decides whether anything needs to go
|
4528 |
|
|
into these sections. */
|
4529 |
|
|
s->flags |= SEC_EXCLUDE;
|
4530 |
|
|
continue;
|
4531 |
|
|
}
|
4532 |
|
|
|
4533 |
|
|
if ((s->flags & SEC_HAS_CONTENTS) == 0)
|
4534 |
|
|
continue;
|
4535 |
|
|
|
4536 |
|
|
/* Allocate memory for the section contents. We use bfd_zalloc
|
4537 |
|
|
here in case unused entries are not reclaimed before the
|
4538 |
|
|
section's contents are written out. This should not happen,
|
4539 |
|
|
but this way if it does, we get a R_MN10300_NONE reloc
|
4540 |
|
|
instead of garbage. */
|
4541 |
|
|
s->contents = bfd_zalloc (dynobj, s->size);
|
4542 |
|
|
if (s->contents == NULL)
|
4543 |
|
|
return FALSE;
|
4544 |
|
|
}
|
4545 |
|
|
|
4546 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
4547 |
|
|
{
|
4548 |
|
|
/* Add some entries to the .dynamic section. We fill in the
|
4549 |
|
|
values later, in _bfd_mn10300_elf_finish_dynamic_sections,
|
4550 |
|
|
but we must add the entries now so that we get the correct
|
4551 |
|
|
size for the .dynamic section. The DT_DEBUG entry is filled
|
4552 |
|
|
in by the dynamic linker and used by the debugger. */
|
4553 |
|
|
if (! info->shared)
|
4554 |
|
|
{
|
4555 |
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0))
|
4556 |
|
|
return FALSE;
|
4557 |
|
|
}
|
4558 |
|
|
|
4559 |
|
|
if (plt)
|
4560 |
|
|
{
|
4561 |
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
|
4562 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
|
4563 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
|
4564 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
|
4565 |
|
|
return FALSE;
|
4566 |
|
|
}
|
4567 |
|
|
|
4568 |
|
|
if (relocs)
|
4569 |
|
|
{
|
4570 |
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
|
4571 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
|
4572 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_RELAENT,
|
4573 |
|
|
sizeof (Elf32_External_Rela)))
|
4574 |
|
|
return FALSE;
|
4575 |
|
|
}
|
4576 |
|
|
|
4577 |
|
|
if (reltext)
|
4578 |
|
|
{
|
4579 |
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
|
4580 |
|
|
return FALSE;
|
4581 |
|
|
}
|
4582 |
|
|
}
|
4583 |
|
|
|
4584 |
|
|
return TRUE;
|
4585 |
|
|
}
|
4586 |
|
|
|
4587 |
|
|
/* Finish up dynamic symbol handling. We set the contents of various
|
4588 |
|
|
dynamic sections here. */
|
4589 |
|
|
|
4590 |
|
|
static bfd_boolean
|
4591 |
|
|
_bfd_mn10300_elf_finish_dynamic_symbol (bfd * output_bfd,
|
4592 |
|
|
struct bfd_link_info * info,
|
4593 |
|
|
struct elf_link_hash_entry * h,
|
4594 |
|
|
Elf_Internal_Sym * sym)
|
4595 |
|
|
{
|
4596 |
|
|
bfd * dynobj;
|
4597 |
|
|
|
4598 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
4599 |
|
|
|
4600 |
|
|
if (h->plt.offset != (bfd_vma) -1)
|
4601 |
|
|
{
|
4602 |
|
|
asection * splt;
|
4603 |
|
|
asection * sgot;
|
4604 |
|
|
asection * srel;
|
4605 |
|
|
bfd_vma plt_index;
|
4606 |
|
|
bfd_vma got_offset;
|
4607 |
|
|
Elf_Internal_Rela rel;
|
4608 |
|
|
|
4609 |
|
|
/* This symbol has an entry in the procedure linkage table. Set
|
4610 |
|
|
it up. */
|
4611 |
|
|
|
4612 |
|
|
BFD_ASSERT (h->dynindx != -1);
|
4613 |
|
|
|
4614 |
|
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
4615 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got.plt");
|
4616 |
|
|
srel = bfd_get_section_by_name (dynobj, ".rela.plt");
|
4617 |
|
|
BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
|
4618 |
|
|
|
4619 |
|
|
/* Get the index in the procedure linkage table which
|
4620 |
|
|
corresponds to this symbol. This is the index of this symbol
|
4621 |
|
|
in all the symbols for which we are making plt entries. The
|
4622 |
|
|
first entry in the procedure linkage table is reserved. */
|
4623 |
|
|
plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info))
|
4624 |
|
|
/ elf_mn10300_sizeof_plt (info));
|
4625 |
|
|
|
4626 |
|
|
/* Get the offset into the .got table of the entry that
|
4627 |
|
|
corresponds to this function. Each .got entry is 4 bytes.
|
4628 |
|
|
The first three are reserved. */
|
4629 |
|
|
got_offset = (plt_index + 3) * 4;
|
4630 |
|
|
|
4631 |
|
|
/* Fill in the entry in the procedure linkage table. */
|
4632 |
|
|
if (! info->shared)
|
4633 |
|
|
{
|
4634 |
|
|
memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry,
|
4635 |
|
|
elf_mn10300_sizeof_plt (info));
|
4636 |
|
|
bfd_put_32 (output_bfd,
|
4637 |
|
|
(sgot->output_section->vma
|
4638 |
|
|
+ sgot->output_offset
|
4639 |
|
|
+ got_offset),
|
4640 |
|
|
(splt->contents + h->plt.offset
|
4641 |
|
|
+ elf_mn10300_plt_symbol_offset (info)));
|
4642 |
|
|
|
4643 |
|
|
bfd_put_32 (output_bfd,
|
4644 |
|
|
(1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)),
|
4645 |
|
|
(splt->contents + h->plt.offset
|
4646 |
|
|
+ elf_mn10300_plt_plt0_offset (info)));
|
4647 |
|
|
}
|
4648 |
|
|
else
|
4649 |
|
|
{
|
4650 |
|
|
memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry,
|
4651 |
|
|
elf_mn10300_sizeof_plt (info));
|
4652 |
|
|
|
4653 |
|
|
bfd_put_32 (output_bfd, got_offset,
|
4654 |
|
|
(splt->contents + h->plt.offset
|
4655 |
|
|
+ elf_mn10300_plt_symbol_offset (info)));
|
4656 |
|
|
}
|
4657 |
|
|
|
4658 |
|
|
bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
|
4659 |
|
|
(splt->contents + h->plt.offset
|
4660 |
|
|
+ elf_mn10300_plt_reloc_offset (info)));
|
4661 |
|
|
|
4662 |
|
|
/* Fill in the entry in the global offset table. */
|
4663 |
|
|
bfd_put_32 (output_bfd,
|
4664 |
|
|
(splt->output_section->vma
|
4665 |
|
|
+ splt->output_offset
|
4666 |
|
|
+ h->plt.offset
|
4667 |
|
|
+ elf_mn10300_plt_temp_offset (info)),
|
4668 |
|
|
sgot->contents + got_offset);
|
4669 |
|
|
|
4670 |
|
|
/* Fill in the entry in the .rela.plt section. */
|
4671 |
|
|
rel.r_offset = (sgot->output_section->vma
|
4672 |
|
|
+ sgot->output_offset
|
4673 |
|
|
+ got_offset);
|
4674 |
|
|
rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT);
|
4675 |
|
|
rel.r_addend = 0;
|
4676 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rel,
|
4677 |
|
|
(bfd_byte *) ((Elf32_External_Rela *) srel->contents
|
4678 |
|
|
+ plt_index));
|
4679 |
|
|
|
4680 |
|
|
if (!h->def_regular)
|
4681 |
|
|
/* Mark the symbol as undefined, rather than as defined in
|
4682 |
|
|
the .plt section. Leave the value alone. */
|
4683 |
|
|
sym->st_shndx = SHN_UNDEF;
|
4684 |
|
|
}
|
4685 |
|
|
|
4686 |
|
|
if (h->got.offset != (bfd_vma) -1)
|
4687 |
|
|
{
|
4688 |
|
|
asection * sgot;
|
4689 |
|
|
asection * srel;
|
4690 |
|
|
Elf_Internal_Rela rel;
|
4691 |
|
|
|
4692 |
|
|
/* This symbol has an entry in the global offset table. Set it up. */
|
4693 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got");
|
4694 |
|
|
srel = bfd_get_section_by_name (dynobj, ".rela.got");
|
4695 |
|
|
BFD_ASSERT (sgot != NULL && srel != NULL);
|
4696 |
|
|
|
4697 |
|
|
rel.r_offset = (sgot->output_section->vma
|
4698 |
|
|
+ sgot->output_offset
|
4699 |
|
|
+ (h->got.offset & ~1));
|
4700 |
|
|
|
4701 |
|
|
/* If this is a -Bsymbolic link, and the symbol is defined
|
4702 |
|
|
locally, we just want to emit a RELATIVE reloc. Likewise if
|
4703 |
|
|
the symbol was forced to be local because of a version file.
|
4704 |
|
|
The entry in the global offset table will already have been
|
4705 |
|
|
initialized in the relocate_section function. */
|
4706 |
|
|
if (info->shared
|
4707 |
|
|
&& (info->symbolic || h->dynindx == -1)
|
4708 |
|
|
&& h->def_regular)
|
4709 |
|
|
{
|
4710 |
|
|
rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
|
4711 |
|
|
rel.r_addend = (h->root.u.def.value
|
4712 |
|
|
+ h->root.u.def.section->output_section->vma
|
4713 |
|
|
+ h->root.u.def.section->output_offset);
|
4714 |
|
|
}
|
4715 |
|
|
else
|
4716 |
|
|
{
|
4717 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
|
4718 |
|
|
rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT);
|
4719 |
|
|
rel.r_addend = 0;
|
4720 |
|
|
}
|
4721 |
|
|
|
4722 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rel,
|
4723 |
|
|
(bfd_byte *) ((Elf32_External_Rela *) srel->contents
|
4724 |
|
|
+ srel->reloc_count));
|
4725 |
|
|
++ srel->reloc_count;
|
4726 |
|
|
}
|
4727 |
|
|
|
4728 |
|
|
if (h->needs_copy)
|
4729 |
|
|
{
|
4730 |
|
|
asection * s;
|
4731 |
|
|
Elf_Internal_Rela rel;
|
4732 |
|
|
|
4733 |
|
|
/* This symbol needs a copy reloc. Set it up. */
|
4734 |
|
|
BFD_ASSERT (h->dynindx != -1
|
4735 |
|
|
&& (h->root.type == bfd_link_hash_defined
|
4736 |
|
|
|| h->root.type == bfd_link_hash_defweak));
|
4737 |
|
|
|
4738 |
|
|
s = bfd_get_section_by_name (h->root.u.def.section->owner,
|
4739 |
|
|
".rela.bss");
|
4740 |
|
|
BFD_ASSERT (s != NULL);
|
4741 |
|
|
|
4742 |
|
|
rel.r_offset = (h->root.u.def.value
|
4743 |
|
|
+ h->root.u.def.section->output_section->vma
|
4744 |
|
|
+ h->root.u.def.section->output_offset);
|
4745 |
|
|
rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY);
|
4746 |
|
|
rel.r_addend = 0;
|
4747 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, & rel,
|
4748 |
|
|
(bfd_byte *) ((Elf32_External_Rela *) s->contents
|
4749 |
|
|
+ s->reloc_count));
|
4750 |
|
|
++ s->reloc_count;
|
4751 |
|
|
}
|
4752 |
|
|
|
4753 |
|
|
/* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
|
4754 |
|
|
if (streq (h->root.root.string, "_DYNAMIC")
|
4755 |
|
|
|| h == elf_hash_table (info)->hgot)
|
4756 |
|
|
sym->st_shndx = SHN_ABS;
|
4757 |
|
|
|
4758 |
|
|
return TRUE;
|
4759 |
|
|
}
|
4760 |
|
|
|
4761 |
|
|
/* Finish up the dynamic sections. */
|
4762 |
|
|
|
4763 |
|
|
static bfd_boolean
|
4764 |
|
|
_bfd_mn10300_elf_finish_dynamic_sections (bfd * output_bfd,
|
4765 |
|
|
struct bfd_link_info * info)
|
4766 |
|
|
{
|
4767 |
|
|
bfd * dynobj;
|
4768 |
|
|
asection * sgot;
|
4769 |
|
|
asection * sdyn;
|
4770 |
|
|
|
4771 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
4772 |
|
|
|
4773 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got.plt");
|
4774 |
|
|
BFD_ASSERT (sgot != NULL);
|
4775 |
|
|
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
4776 |
|
|
|
4777 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
4778 |
|
|
{
|
4779 |
|
|
asection * splt;
|
4780 |
|
|
Elf32_External_Dyn * dyncon;
|
4781 |
|
|
Elf32_External_Dyn * dynconend;
|
4782 |
|
|
|
4783 |
|
|
BFD_ASSERT (sdyn != NULL);
|
4784 |
|
|
|
4785 |
|
|
dyncon = (Elf32_External_Dyn *) sdyn->contents;
|
4786 |
|
|
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
|
4787 |
|
|
|
4788 |
|
|
for (; dyncon < dynconend; dyncon++)
|
4789 |
|
|
{
|
4790 |
|
|
Elf_Internal_Dyn dyn;
|
4791 |
|
|
const char * name;
|
4792 |
|
|
asection * s;
|
4793 |
|
|
|
4794 |
|
|
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
|
4795 |
|
|
|
4796 |
|
|
switch (dyn.d_tag)
|
4797 |
|
|
{
|
4798 |
|
|
default:
|
4799 |
|
|
break;
|
4800 |
|
|
|
4801 |
|
|
case DT_PLTGOT:
|
4802 |
|
|
name = ".got";
|
4803 |
|
|
goto get_vma;
|
4804 |
|
|
|
4805 |
|
|
case DT_JMPREL:
|
4806 |
|
|
name = ".rela.plt";
|
4807 |
|
|
get_vma:
|
4808 |
|
|
s = bfd_get_section_by_name (output_bfd, name);
|
4809 |
|
|
BFD_ASSERT (s != NULL);
|
4810 |
|
|
dyn.d_un.d_ptr = s->vma;
|
4811 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
4812 |
|
|
break;
|
4813 |
|
|
|
4814 |
|
|
case DT_PLTRELSZ:
|
4815 |
|
|
s = bfd_get_section_by_name (output_bfd, ".rela.plt");
|
4816 |
|
|
BFD_ASSERT (s != NULL);
|
4817 |
|
|
dyn.d_un.d_val = s->size;
|
4818 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
4819 |
|
|
break;
|
4820 |
|
|
|
4821 |
|
|
case DT_RELASZ:
|
4822 |
|
|
/* My reading of the SVR4 ABI indicates that the
|
4823 |
|
|
procedure linkage table relocs (DT_JMPREL) should be
|
4824 |
|
|
included in the overall relocs (DT_RELA). This is
|
4825 |
|
|
what Solaris does. However, UnixWare can not handle
|
4826 |
|
|
that case. Therefore, we override the DT_RELASZ entry
|
4827 |
|
|
here to make it not include the JMPREL relocs. Since
|
4828 |
|
|
the linker script arranges for .rela.plt to follow all
|
4829 |
|
|
other relocation sections, we don't have to worry
|
4830 |
|
|
about changing the DT_RELA entry. */
|
4831 |
|
|
s = bfd_get_section_by_name (output_bfd, ".rela.plt");
|
4832 |
|
|
if (s != NULL)
|
4833 |
|
|
dyn.d_un.d_val -= s->size;
|
4834 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
4835 |
|
|
break;
|
4836 |
|
|
}
|
4837 |
|
|
}
|
4838 |
|
|
|
4839 |
|
|
/* Fill in the first entry in the procedure linkage table. */
|
4840 |
|
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
4841 |
|
|
if (splt && splt->size > 0)
|
4842 |
|
|
{
|
4843 |
|
|
if (info->shared)
|
4844 |
|
|
{
|
4845 |
|
|
memcpy (splt->contents, elf_mn10300_pic_plt_entry,
|
4846 |
|
|
elf_mn10300_sizeof_plt (info));
|
4847 |
|
|
}
|
4848 |
|
|
else
|
4849 |
|
|
{
|
4850 |
|
|
memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE);
|
4851 |
|
|
bfd_put_32 (output_bfd,
|
4852 |
|
|
sgot->output_section->vma + sgot->output_offset + 4,
|
4853 |
|
|
splt->contents + elf_mn10300_plt0_gotid_offset (info));
|
4854 |
|
|
bfd_put_32 (output_bfd,
|
4855 |
|
|
sgot->output_section->vma + sgot->output_offset + 8,
|
4856 |
|
|
splt->contents + elf_mn10300_plt0_linker_offset (info));
|
4857 |
|
|
}
|
4858 |
|
|
|
4859 |
|
|
/* UnixWare sets the entsize of .plt to 4, although that doesn't
|
4860 |
|
|
really seem like the right value. */
|
4861 |
|
|
elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
|
4862 |
|
|
}
|
4863 |
|
|
}
|
4864 |
|
|
|
4865 |
|
|
/* Fill in the first three entries in the global offset table. */
|
4866 |
|
|
if (sgot->size > 0)
|
4867 |
|
|
{
|
4868 |
|
|
if (sdyn == NULL)
|
4869 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
|
4870 |
|
|
else
|
4871 |
|
|
bfd_put_32 (output_bfd,
|
4872 |
|
|
sdyn->output_section->vma + sdyn->output_offset,
|
4873 |
|
|
sgot->contents);
|
4874 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
|
4875 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
|
4876 |
|
|
}
|
4877 |
|
|
|
4878 |
|
|
elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
|
4879 |
|
|
|
4880 |
|
|
return TRUE;
|
4881 |
|
|
}
|
4882 |
|
|
|
4883 |
|
|
/* Classify relocation types, such that combreloc can sort them
|
4884 |
|
|
properly. */
|
4885 |
|
|
|
4886 |
|
|
static enum elf_reloc_type_class
|
4887 |
|
|
_bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela *rela)
|
4888 |
|
|
{
|
4889 |
|
|
switch ((int) ELF32_R_TYPE (rela->r_info))
|
4890 |
|
|
{
|
4891 |
|
|
case R_MN10300_RELATIVE: return reloc_class_relative;
|
4892 |
|
|
case R_MN10300_JMP_SLOT: return reloc_class_plt;
|
4893 |
|
|
case R_MN10300_COPY: return reloc_class_copy;
|
4894 |
|
|
default: return reloc_class_normal;
|
4895 |
|
|
}
|
4896 |
|
|
}
|
4897 |
|
|
|
4898 |
|
|
#ifndef ELF_ARCH
|
4899 |
|
|
#define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
|
4900 |
|
|
#define TARGET_LITTLE_NAME "elf32-mn10300"
|
4901 |
|
|
#define ELF_ARCH bfd_arch_mn10300
|
4902 |
|
|
#define ELF_MACHINE_CODE EM_MN10300
|
4903 |
|
|
#define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300
|
4904 |
|
|
#define ELF_MAXPAGESIZE 0x1000
|
4905 |
|
|
#endif
|
4906 |
|
|
|
4907 |
|
|
#define elf_info_to_howto mn10300_info_to_howto
|
4908 |
|
|
#define elf_info_to_howto_rel 0
|
4909 |
|
|
#define elf_backend_can_gc_sections 1
|
4910 |
|
|
#define elf_backend_rela_normal 1
|
4911 |
|
|
#define elf_backend_check_relocs mn10300_elf_check_relocs
|
4912 |
|
|
#define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook
|
4913 |
|
|
#define elf_backend_relocate_section mn10300_elf_relocate_section
|
4914 |
|
|
#define bfd_elf32_bfd_relax_section mn10300_elf_relax_section
|
4915 |
|
|
#define bfd_elf32_bfd_get_relocated_section_contents \
|
4916 |
|
|
mn10300_elf_get_relocated_section_contents
|
4917 |
|
|
#define bfd_elf32_bfd_link_hash_table_create \
|
4918 |
|
|
elf32_mn10300_link_hash_table_create
|
4919 |
|
|
#define bfd_elf32_bfd_link_hash_table_free \
|
4920 |
|
|
elf32_mn10300_link_hash_table_free
|
4921 |
|
|
|
4922 |
|
|
#ifndef elf_symbol_leading_char
|
4923 |
|
|
#define elf_symbol_leading_char '_'
|
4924 |
|
|
#endif
|
4925 |
|
|
|
4926 |
|
|
/* So we can set bits in e_flags. */
|
4927 |
|
|
#define elf_backend_final_write_processing \
|
4928 |
|
|
_bfd_mn10300_elf_final_write_processing
|
4929 |
|
|
#define elf_backend_object_p _bfd_mn10300_elf_object_p
|
4930 |
|
|
|
4931 |
|
|
#define bfd_elf32_bfd_merge_private_bfd_data \
|
4932 |
|
|
_bfd_mn10300_elf_merge_private_bfd_data
|
4933 |
|
|
|
4934 |
|
|
#define elf_backend_can_gc_sections 1
|
4935 |
|
|
#define elf_backend_create_dynamic_sections \
|
4936 |
|
|
_bfd_mn10300_elf_create_dynamic_sections
|
4937 |
|
|
#define elf_backend_adjust_dynamic_symbol \
|
4938 |
|
|
_bfd_mn10300_elf_adjust_dynamic_symbol
|
4939 |
|
|
#define elf_backend_size_dynamic_sections \
|
4940 |
|
|
_bfd_mn10300_elf_size_dynamic_sections
|
4941 |
|
|
#define elf_backend_omit_section_dynsym \
|
4942 |
|
|
((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
|
4943 |
|
|
#define elf_backend_finish_dynamic_symbol \
|
4944 |
|
|
_bfd_mn10300_elf_finish_dynamic_symbol
|
4945 |
|
|
#define elf_backend_finish_dynamic_sections \
|
4946 |
|
|
_bfd_mn10300_elf_finish_dynamic_sections
|
4947 |
|
|
|
4948 |
|
|
#define elf_backend_reloc_type_class \
|
4949 |
|
|
_bfd_mn10300_elf_reloc_type_class
|
4950 |
|
|
|
4951 |
|
|
#define elf_backend_want_got_plt 1
|
4952 |
|
|
#define elf_backend_plt_readonly 1
|
4953 |
|
|
#define elf_backend_want_plt_sym 0
|
4954 |
|
|
#define elf_backend_got_header_size 12
|
4955 |
|
|
|
4956 |
|
|
#include "elf32-target.h"
|