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khays |
/* 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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148 |
khays |
2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
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14 |
khays |
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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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(elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
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== MN10300_ELF_DATA ? ((struct elf32_mn10300_link_hash_table *) ((p)->hash)) : NULL)
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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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| 269 |
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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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| 281 |
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TRUE), /* pcrel_offset */
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| 283 |
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HOWTO (R_MN10300_GOTOFF32, /* type */
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| 284 |
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0, /* rightshift */
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| 285 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
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| 286 |
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32, /* bitsize */
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| 287 |
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FALSE, /* pc_relative */
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| 288 |
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0, /* bitpos */
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| 289 |
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complain_overflow_bitfield, /* complain_on_overflow */
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| 290 |
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bfd_elf_generic_reloc, /* */
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| 291 |
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"R_MN10300_GOTOFF32", /* name */
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| 292 |
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FALSE, /* partial_inplace */
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| 293 |
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0xffffffff, /* src_mask */
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| 294 |
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0xffffffff, /* dst_mask */
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| 295 |
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FALSE), /* pcrel_offset */
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| 296 |
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|
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| 297 |
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HOWTO (R_MN10300_GOTOFF24, /* type */
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| 298 |
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0, /* rightshift */
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| 299 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
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| 300 |
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24, /* bitsize */
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| 301 |
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FALSE, /* pc_relative */
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| 302 |
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0, /* bitpos */
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| 303 |
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complain_overflow_bitfield, /* complain_on_overflow */
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| 304 |
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bfd_elf_generic_reloc, /* */
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| 305 |
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"R_MN10300_GOTOFF24", /* name */
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| 306 |
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FALSE, /* partial_inplace */
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| 307 |
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0xffffff, /* src_mask */
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| 308 |
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0xffffff, /* dst_mask */
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| 309 |
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FALSE), /* pcrel_offset */
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| 310 |
|
|
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| 311 |
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HOWTO (R_MN10300_GOTOFF16, /* type */
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| 312 |
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0, /* rightshift */
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| 313 |
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1, /* size (0 = byte, 1 = short, 2 = long) */
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| 314 |
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16, /* bitsize */
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| 315 |
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FALSE, /* pc_relative */
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| 316 |
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0, /* bitpos */
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| 317 |
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complain_overflow_bitfield, /* complain_on_overflow */
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| 318 |
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bfd_elf_generic_reloc, /* */
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| 319 |
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"R_MN10300_GOTOFF16", /* name */
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| 320 |
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FALSE, /* partial_inplace */
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| 321 |
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0xffff, /* src_mask */
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| 322 |
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0xffff, /* dst_mask */
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| 323 |
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FALSE), /* pcrel_offset */
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| 324 |
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|
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| 325 |
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HOWTO (R_MN10300_PLT32, /* type */
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| 326 |
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0, /* rightshift */
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| 327 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
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| 328 |
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32, /* bitsize */
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| 329 |
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TRUE, /* pc_relative */
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| 330 |
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0, /* bitpos */
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| 331 |
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complain_overflow_bitfield, /* complain_on_overflow */
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| 332 |
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bfd_elf_generic_reloc, /* */
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| 333 |
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"R_MN10300_PLT32", /* name */
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| 334 |
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FALSE, /* partial_inplace */
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| 335 |
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0xffffffff, /* src_mask */
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| 336 |
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0xffffffff, /* dst_mask */
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| 337 |
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TRUE), /* pcrel_offset */
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| 338 |
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|
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| 339 |
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HOWTO (R_MN10300_PLT16, /* type */
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| 340 |
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0, /* rightshift */
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| 341 |
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1, /* size (0 = byte, 1 = short, 2 = long) */
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| 342 |
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16, /* bitsize */
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| 343 |
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TRUE, /* pc_relative */
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| 344 |
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0, /* bitpos */
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| 345 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 346 |
|
|
bfd_elf_generic_reloc, /* */
|
| 347 |
|
|
"R_MN10300_PLT16", /* name */
|
| 348 |
|
|
FALSE, /* partial_inplace */
|
| 349 |
|
|
0xffff, /* src_mask */
|
| 350 |
|
|
0xffff, /* dst_mask */
|
| 351 |
|
|
TRUE), /* pcrel_offset */
|
| 352 |
|
|
|
| 353 |
|
|
HOWTO (R_MN10300_GOT32, /* type */
|
| 354 |
|
|
0, /* rightshift */
|
| 355 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 356 |
|
|
32, /* bitsize */
|
| 357 |
|
|
FALSE, /* pc_relative */
|
| 358 |
|
|
0, /* bitpos */
|
| 359 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 360 |
|
|
bfd_elf_generic_reloc, /* */
|
| 361 |
|
|
"R_MN10300_GOT32", /* name */
|
| 362 |
|
|
FALSE, /* partial_inplace */
|
| 363 |
|
|
0xffffffff, /* src_mask */
|
| 364 |
|
|
0xffffffff, /* dst_mask */
|
| 365 |
|
|
FALSE), /* pcrel_offset */
|
| 366 |
|
|
|
| 367 |
|
|
HOWTO (R_MN10300_GOT24, /* type */
|
| 368 |
|
|
0, /* rightshift */
|
| 369 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 370 |
|
|
24, /* bitsize */
|
| 371 |
|
|
FALSE, /* pc_relative */
|
| 372 |
|
|
0, /* bitpos */
|
| 373 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 374 |
|
|
bfd_elf_generic_reloc, /* */
|
| 375 |
|
|
"R_MN10300_GOT24", /* name */
|
| 376 |
|
|
FALSE, /* partial_inplace */
|
| 377 |
|
|
0xffffffff, /* src_mask */
|
| 378 |
|
|
0xffffffff, /* dst_mask */
|
| 379 |
|
|
FALSE), /* pcrel_offset */
|
| 380 |
|
|
|
| 381 |
|
|
HOWTO (R_MN10300_GOT16, /* type */
|
| 382 |
|
|
0, /* rightshift */
|
| 383 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 384 |
|
|
16, /* bitsize */
|
| 385 |
|
|
FALSE, /* pc_relative */
|
| 386 |
|
|
0, /* bitpos */
|
| 387 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 388 |
|
|
bfd_elf_generic_reloc, /* */
|
| 389 |
|
|
"R_MN10300_GOT16", /* name */
|
| 390 |
|
|
FALSE, /* partial_inplace */
|
| 391 |
|
|
0xffffffff, /* src_mask */
|
| 392 |
|
|
0xffffffff, /* dst_mask */
|
| 393 |
|
|
FALSE), /* pcrel_offset */
|
| 394 |
|
|
|
| 395 |
|
|
HOWTO (R_MN10300_COPY, /* type */
|
| 396 |
|
|
0, /* rightshift */
|
| 397 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 398 |
|
|
32, /* bitsize */
|
| 399 |
|
|
FALSE, /* pc_relative */
|
| 400 |
|
|
0, /* bitpos */
|
| 401 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 402 |
|
|
bfd_elf_generic_reloc, /* */
|
| 403 |
|
|
"R_MN10300_COPY", /* name */
|
| 404 |
|
|
FALSE, /* partial_inplace */
|
| 405 |
|
|
0xffffffff, /* src_mask */
|
| 406 |
|
|
0xffffffff, /* dst_mask */
|
| 407 |
|
|
FALSE), /* pcrel_offset */
|
| 408 |
|
|
|
| 409 |
|
|
HOWTO (R_MN10300_GLOB_DAT, /* type */
|
| 410 |
|
|
0, /* rightshift */
|
| 411 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 412 |
|
|
32, /* bitsize */
|
| 413 |
|
|
FALSE, /* pc_relative */
|
| 414 |
|
|
0, /* bitpos */
|
| 415 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 416 |
|
|
bfd_elf_generic_reloc, /* */
|
| 417 |
|
|
"R_MN10300_GLOB_DAT", /* name */
|
| 418 |
|
|
FALSE, /* partial_inplace */
|
| 419 |
|
|
0xffffffff, /* src_mask */
|
| 420 |
|
|
0xffffffff, /* dst_mask */
|
| 421 |
|
|
FALSE), /* pcrel_offset */
|
| 422 |
|
|
|
| 423 |
|
|
HOWTO (R_MN10300_JMP_SLOT, /* type */
|
| 424 |
|
|
0, /* rightshift */
|
| 425 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 426 |
|
|
32, /* bitsize */
|
| 427 |
|
|
FALSE, /* pc_relative */
|
| 428 |
|
|
0, /* bitpos */
|
| 429 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 430 |
|
|
bfd_elf_generic_reloc, /* */
|
| 431 |
|
|
"R_MN10300_JMP_SLOT", /* name */
|
| 432 |
|
|
FALSE, /* partial_inplace */
|
| 433 |
|
|
0xffffffff, /* src_mask */
|
| 434 |
|
|
0xffffffff, /* dst_mask */
|
| 435 |
|
|
FALSE), /* pcrel_offset */
|
| 436 |
|
|
|
| 437 |
|
|
HOWTO (R_MN10300_RELATIVE, /* type */
|
| 438 |
|
|
0, /* rightshift */
|
| 439 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 440 |
|
|
32, /* bitsize */
|
| 441 |
|
|
FALSE, /* pc_relative */
|
| 442 |
|
|
0, /* bitpos */
|
| 443 |
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
| 444 |
|
|
bfd_elf_generic_reloc, /* */
|
| 445 |
|
|
"R_MN10300_RELATIVE", /* name */
|
| 446 |
|
|
FALSE, /* partial_inplace */
|
| 447 |
|
|
0xffffffff, /* src_mask */
|
| 448 |
|
|
0xffffffff, /* dst_mask */
|
| 449 |
|
|
FALSE), /* pcrel_offset */
|
| 450 |
|
|
|
| 451 |
|
|
EMPTY_HOWTO (24),
|
| 452 |
|
|
EMPTY_HOWTO (25),
|
| 453 |
|
|
EMPTY_HOWTO (26),
|
| 454 |
|
|
EMPTY_HOWTO (27),
|
| 455 |
|
|
EMPTY_HOWTO (28),
|
| 456 |
|
|
EMPTY_HOWTO (29),
|
| 457 |
|
|
EMPTY_HOWTO (30),
|
| 458 |
|
|
EMPTY_HOWTO (31),
|
| 459 |
|
|
EMPTY_HOWTO (32),
|
| 460 |
|
|
|
| 461 |
|
|
HOWTO (R_MN10300_SYM_DIFF, /* type */
|
| 462 |
|
|
0, /* rightshift */
|
| 463 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 464 |
|
|
32, /* bitsize */
|
| 465 |
|
|
FALSE, /* pc_relative */
|
| 466 |
|
|
0, /* bitpos */
|
| 467 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 468 |
|
|
NULL, /* special handler. */
|
| 469 |
|
|
"R_MN10300_SYM_DIFF", /* name */
|
| 470 |
|
|
FALSE, /* partial_inplace */
|
| 471 |
|
|
0xffffffff, /* src_mask */
|
| 472 |
|
|
0xffffffff, /* dst_mask */
|
| 473 |
|
|
FALSE), /* pcrel_offset */
|
| 474 |
|
|
|
| 475 |
|
|
HOWTO (R_MN10300_ALIGN, /* type */
|
| 476 |
|
|
0, /* rightshift */
|
| 477 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 478 |
|
|
32, /* bitsize */
|
| 479 |
|
|
FALSE, /* pc_relative */
|
| 480 |
|
|
0, /* bitpos */
|
| 481 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 482 |
|
|
NULL, /* special handler. */
|
| 483 |
|
|
"R_MN10300_ALIGN", /* name */
|
| 484 |
|
|
FALSE, /* partial_inplace */
|
| 485 |
|
|
0, /* src_mask */
|
| 486 |
|
|
0, /* dst_mask */
|
| 487 |
|
|
FALSE) /* pcrel_offset */
|
| 488 |
|
|
};
|
| 489 |
|
|
|
| 490 |
|
|
struct mn10300_reloc_map
|
| 491 |
|
|
{
|
| 492 |
|
|
bfd_reloc_code_real_type bfd_reloc_val;
|
| 493 |
|
|
unsigned char elf_reloc_val;
|
| 494 |
|
|
};
|
| 495 |
|
|
|
| 496 |
|
|
static const struct mn10300_reloc_map mn10300_reloc_map[] =
|
| 497 |
|
|
{
|
| 498 |
|
|
{ BFD_RELOC_NONE, R_MN10300_NONE, },
|
| 499 |
|
|
{ BFD_RELOC_32, R_MN10300_32, },
|
| 500 |
|
|
{ BFD_RELOC_16, R_MN10300_16, },
|
| 501 |
|
|
{ BFD_RELOC_8, R_MN10300_8, },
|
| 502 |
|
|
{ BFD_RELOC_32_PCREL, R_MN10300_PCREL32, },
|
| 503 |
|
|
{ BFD_RELOC_16_PCREL, R_MN10300_PCREL16, },
|
| 504 |
|
|
{ BFD_RELOC_8_PCREL, R_MN10300_PCREL8, },
|
| 505 |
|
|
{ BFD_RELOC_24, R_MN10300_24, },
|
| 506 |
|
|
{ BFD_RELOC_VTABLE_INHERIT, R_MN10300_GNU_VTINHERIT },
|
| 507 |
|
|
{ BFD_RELOC_VTABLE_ENTRY, R_MN10300_GNU_VTENTRY },
|
| 508 |
|
|
{ BFD_RELOC_32_GOT_PCREL, R_MN10300_GOTPC32 },
|
| 509 |
|
|
{ BFD_RELOC_16_GOT_PCREL, R_MN10300_GOTPC16 },
|
| 510 |
|
|
{ BFD_RELOC_32_GOTOFF, R_MN10300_GOTOFF32 },
|
| 511 |
|
|
{ BFD_RELOC_MN10300_GOTOFF24, R_MN10300_GOTOFF24 },
|
| 512 |
|
|
{ BFD_RELOC_16_GOTOFF, R_MN10300_GOTOFF16 },
|
| 513 |
|
|
{ BFD_RELOC_32_PLT_PCREL, R_MN10300_PLT32 },
|
| 514 |
|
|
{ BFD_RELOC_16_PLT_PCREL, R_MN10300_PLT16 },
|
| 515 |
|
|
{ BFD_RELOC_MN10300_GOT32, R_MN10300_GOT32 },
|
| 516 |
|
|
{ BFD_RELOC_MN10300_GOT24, R_MN10300_GOT24 },
|
| 517 |
|
|
{ BFD_RELOC_MN10300_GOT16, R_MN10300_GOT16 },
|
| 518 |
|
|
{ BFD_RELOC_MN10300_COPY, R_MN10300_COPY },
|
| 519 |
|
|
{ BFD_RELOC_MN10300_GLOB_DAT, R_MN10300_GLOB_DAT },
|
| 520 |
|
|
{ BFD_RELOC_MN10300_JMP_SLOT, R_MN10300_JMP_SLOT },
|
| 521 |
|
|
{ BFD_RELOC_MN10300_RELATIVE, R_MN10300_RELATIVE },
|
| 522 |
|
|
{ BFD_RELOC_MN10300_SYM_DIFF, R_MN10300_SYM_DIFF },
|
| 523 |
|
|
{ BFD_RELOC_MN10300_ALIGN, R_MN10300_ALIGN }
|
| 524 |
|
|
};
|
| 525 |
|
|
|
| 526 |
|
|
/* Create the GOT section. */
|
| 527 |
|
|
|
| 528 |
|
|
static bfd_boolean
|
| 529 |
|
|
_bfd_mn10300_elf_create_got_section (bfd * abfd,
|
| 530 |
|
|
struct bfd_link_info * info)
|
| 531 |
|
|
{
|
| 532 |
|
|
flagword flags;
|
| 533 |
|
|
flagword pltflags;
|
| 534 |
|
|
asection * s;
|
| 535 |
|
|
struct elf_link_hash_entry * h;
|
| 536 |
|
|
const struct elf_backend_data * bed = get_elf_backend_data (abfd);
|
| 537 |
|
|
int ptralign;
|
| 538 |
|
|
|
| 539 |
|
|
/* This function may be called more than once. */
|
| 540 |
|
|
if (bfd_get_section_by_name (abfd, ".got") != NULL)
|
| 541 |
|
|
return TRUE;
|
| 542 |
|
|
|
| 543 |
|
|
switch (bed->s->arch_size)
|
| 544 |
|
|
{
|
| 545 |
|
|
case 32:
|
| 546 |
|
|
ptralign = 2;
|
| 547 |
|
|
break;
|
| 548 |
|
|
|
| 549 |
|
|
case 64:
|
| 550 |
|
|
ptralign = 3;
|
| 551 |
|
|
break;
|
| 552 |
|
|
|
| 553 |
|
|
default:
|
| 554 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 555 |
|
|
return FALSE;
|
| 556 |
|
|
}
|
| 557 |
|
|
|
| 558 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
|
| 559 |
|
|
| SEC_LINKER_CREATED);
|
| 560 |
|
|
|
| 561 |
|
|
pltflags = flags;
|
| 562 |
|
|
pltflags |= SEC_CODE;
|
| 563 |
|
|
if (bed->plt_not_loaded)
|
| 564 |
|
|
pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
|
| 565 |
|
|
if (bed->plt_readonly)
|
| 566 |
|
|
pltflags |= SEC_READONLY;
|
| 567 |
|
|
|
| 568 |
|
|
s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
|
| 569 |
|
|
if (s == NULL
|
| 570 |
|
|
|| ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
|
| 571 |
|
|
return FALSE;
|
| 572 |
|
|
|
| 573 |
|
|
/* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
|
| 574 |
|
|
.plt section. */
|
| 575 |
|
|
if (bed->want_plt_sym)
|
| 576 |
|
|
{
|
| 577 |
|
|
h = _bfd_elf_define_linkage_sym (abfd, info, s,
|
| 578 |
|
|
"_PROCEDURE_LINKAGE_TABLE_");
|
| 579 |
|
|
elf_hash_table (info)->hplt = h;
|
| 580 |
|
|
if (h == NULL)
|
| 581 |
|
|
return FALSE;
|
| 582 |
|
|
}
|
| 583 |
|
|
|
| 584 |
|
|
s = bfd_make_section_with_flags (abfd, ".got", flags);
|
| 585 |
|
|
if (s == NULL
|
| 586 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
| 587 |
|
|
return FALSE;
|
| 588 |
|
|
|
| 589 |
|
|
if (bed->want_got_plt)
|
| 590 |
|
|
{
|
| 591 |
|
|
s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
|
| 592 |
|
|
if (s == NULL
|
| 593 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
| 594 |
|
|
return FALSE;
|
| 595 |
|
|
}
|
| 596 |
|
|
|
| 597 |
|
|
/* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
|
| 598 |
|
|
(or .got.plt) section. We don't do this in the linker script
|
| 599 |
|
|
because we don't want to define the symbol if we are not creating
|
| 600 |
|
|
a global offset table. */
|
| 601 |
|
|
h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_");
|
| 602 |
|
|
elf_hash_table (info)->hgot = h;
|
| 603 |
|
|
if (h == NULL)
|
| 604 |
|
|
return FALSE;
|
| 605 |
|
|
|
| 606 |
|
|
/* The first bit of the global offset table is the header. */
|
| 607 |
|
|
s->size += bed->got_header_size;
|
| 608 |
|
|
|
| 609 |
|
|
return TRUE;
|
| 610 |
|
|
}
|
| 611 |
|
|
|
| 612 |
|
|
static reloc_howto_type *
|
| 613 |
|
|
bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 614 |
|
|
bfd_reloc_code_real_type code)
|
| 615 |
|
|
{
|
| 616 |
|
|
unsigned int i;
|
| 617 |
|
|
|
| 618 |
|
|
for (i = ARRAY_SIZE (mn10300_reloc_map); i--;)
|
| 619 |
|
|
if (mn10300_reloc_map[i].bfd_reloc_val == code)
|
| 620 |
|
|
return &elf_mn10300_howto_table[mn10300_reloc_map[i].elf_reloc_val];
|
| 621 |
|
|
|
| 622 |
|
|
return NULL;
|
| 623 |
|
|
}
|
| 624 |
|
|
|
| 625 |
|
|
static reloc_howto_type *
|
| 626 |
|
|
bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 627 |
|
|
const char *r_name)
|
| 628 |
|
|
{
|
| 629 |
|
|
unsigned int i;
|
| 630 |
|
|
|
| 631 |
|
|
for (i = ARRAY_SIZE (elf_mn10300_howto_table); i--;)
|
| 632 |
|
|
if (elf_mn10300_howto_table[i].name != NULL
|
| 633 |
|
|
&& strcasecmp (elf_mn10300_howto_table[i].name, r_name) == 0)
|
| 634 |
|
|
return elf_mn10300_howto_table + i;
|
| 635 |
|
|
|
| 636 |
|
|
return NULL;
|
| 637 |
|
|
}
|
| 638 |
|
|
|
| 639 |
|
|
/* Set the howto pointer for an MN10300 ELF reloc. */
|
| 640 |
|
|
|
| 641 |
|
|
static void
|
| 642 |
|
|
mn10300_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
|
| 643 |
|
|
arelent *cache_ptr,
|
| 644 |
|
|
Elf_Internal_Rela *dst)
|
| 645 |
|
|
{
|
| 646 |
|
|
unsigned int r_type;
|
| 647 |
|
|
|
| 648 |
|
|
r_type = ELF32_R_TYPE (dst->r_info);
|
| 649 |
|
|
BFD_ASSERT (r_type < (unsigned int) R_MN10300_MAX);
|
| 650 |
|
|
cache_ptr->howto = elf_mn10300_howto_table + r_type;
|
| 651 |
|
|
}
|
| 652 |
|
|
|
| 653 |
|
|
/* Look through the relocs for a section during the first phase.
|
| 654 |
|
|
Since we don't do .gots or .plts, we just need to consider the
|
| 655 |
|
|
virtual table relocs for gc. */
|
| 656 |
|
|
|
| 657 |
|
|
static bfd_boolean
|
| 658 |
|
|
mn10300_elf_check_relocs (bfd *abfd,
|
| 659 |
|
|
struct bfd_link_info *info,
|
| 660 |
|
|
asection *sec,
|
| 661 |
|
|
const Elf_Internal_Rela *relocs)
|
| 662 |
|
|
{
|
| 663 |
|
|
bfd_boolean sym_diff_reloc_seen;
|
| 664 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 665 |
|
|
Elf_Internal_Sym * isymbuf = NULL;
|
| 666 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 667 |
|
|
const Elf_Internal_Rela *rel;
|
| 668 |
|
|
const Elf_Internal_Rela *rel_end;
|
| 669 |
|
|
bfd * dynobj;
|
| 670 |
|
|
bfd_vma * local_got_offsets;
|
| 671 |
|
|
asection * sgot;
|
| 672 |
|
|
asection * srelgot;
|
| 673 |
|
|
asection * sreloc;
|
| 674 |
|
|
bfd_boolean result = FALSE;
|
| 675 |
|
|
|
| 676 |
|
|
sgot = NULL;
|
| 677 |
|
|
srelgot = NULL;
|
| 678 |
|
|
sreloc = NULL;
|
| 679 |
|
|
|
| 680 |
|
|
if (info->relocatable)
|
| 681 |
|
|
return TRUE;
|
| 682 |
|
|
|
| 683 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
| 684 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 685 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 686 |
|
|
|
| 687 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 688 |
|
|
local_got_offsets = elf_local_got_offsets (abfd);
|
| 689 |
|
|
rel_end = relocs + sec->reloc_count;
|
| 690 |
|
|
sym_diff_reloc_seen = FALSE;
|
| 691 |
|
|
|
| 692 |
|
|
for (rel = relocs; rel < rel_end; rel++)
|
| 693 |
|
|
{
|
| 694 |
|
|
struct elf_link_hash_entry *h;
|
| 695 |
|
|
unsigned long r_symndx;
|
| 696 |
|
|
unsigned int r_type;
|
| 697 |
|
|
|
| 698 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 699 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 700 |
|
|
h = NULL;
|
| 701 |
|
|
else
|
| 702 |
|
|
{
|
| 703 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 704 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
| 705 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
| 706 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 707 |
|
|
}
|
| 708 |
|
|
|
| 709 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 710 |
|
|
|
| 711 |
|
|
/* Some relocs require a global offset table. */
|
| 712 |
|
|
if (dynobj == NULL)
|
| 713 |
|
|
{
|
| 714 |
|
|
switch (r_type)
|
| 715 |
|
|
{
|
| 716 |
|
|
case R_MN10300_GOT32:
|
| 717 |
|
|
case R_MN10300_GOT24:
|
| 718 |
|
|
case R_MN10300_GOT16:
|
| 719 |
|
|
case R_MN10300_GOTOFF32:
|
| 720 |
|
|
case R_MN10300_GOTOFF24:
|
| 721 |
|
|
case R_MN10300_GOTOFF16:
|
| 722 |
|
|
case R_MN10300_GOTPC32:
|
| 723 |
|
|
case R_MN10300_GOTPC16:
|
| 724 |
|
|
elf_hash_table (info)->dynobj = dynobj = abfd;
|
| 725 |
|
|
if (! _bfd_mn10300_elf_create_got_section (dynobj, info))
|
| 726 |
|
|
goto fail;
|
| 727 |
|
|
break;
|
| 728 |
|
|
|
| 729 |
|
|
default:
|
| 730 |
|
|
break;
|
| 731 |
|
|
}
|
| 732 |
|
|
}
|
| 733 |
|
|
|
| 734 |
|
|
switch (r_type)
|
| 735 |
|
|
{
|
| 736 |
|
|
/* This relocation describes the C++ object vtable hierarchy.
|
| 737 |
|
|
Reconstruct it for later use during GC. */
|
| 738 |
|
|
case R_MN10300_GNU_VTINHERIT:
|
| 739 |
|
|
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
| 740 |
|
|
goto fail;
|
| 741 |
|
|
break;
|
| 742 |
|
|
|
| 743 |
|
|
/* This relocation describes which C++ vtable entries are actually
|
| 744 |
|
|
used. Record for later use during GC. */
|
| 745 |
|
|
case R_MN10300_GNU_VTENTRY:
|
| 746 |
|
|
BFD_ASSERT (h != NULL);
|
| 747 |
|
|
if (h != NULL
|
| 748 |
|
|
&& !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
| 749 |
|
|
goto fail;
|
| 750 |
|
|
break;
|
| 751 |
|
|
|
| 752 |
|
|
case R_MN10300_GOT32:
|
| 753 |
|
|
case R_MN10300_GOT24:
|
| 754 |
|
|
case R_MN10300_GOT16:
|
| 755 |
|
|
/* This symbol requires a global offset table entry. */
|
| 756 |
|
|
|
| 757 |
|
|
if (sgot == NULL)
|
| 758 |
|
|
{
|
| 759 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got");
|
| 760 |
|
|
BFD_ASSERT (sgot != NULL);
|
| 761 |
|
|
}
|
| 762 |
|
|
|
| 763 |
|
|
if (srelgot == NULL
|
| 764 |
|
|
&& (h != NULL || info->shared))
|
| 765 |
|
|
{
|
| 766 |
|
|
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
|
| 767 |
|
|
if (srelgot == NULL)
|
| 768 |
|
|
{
|
| 769 |
|
|
srelgot = bfd_make_section_with_flags (dynobj,
|
| 770 |
|
|
".rela.got",
|
| 771 |
|
|
(SEC_ALLOC
|
| 772 |
|
|
| SEC_LOAD
|
| 773 |
|
|
| SEC_HAS_CONTENTS
|
| 774 |
|
|
| SEC_IN_MEMORY
|
| 775 |
|
|
| SEC_LINKER_CREATED
|
| 776 |
|
|
| SEC_READONLY));
|
| 777 |
|
|
if (srelgot == NULL
|
| 778 |
|
|
|| ! bfd_set_section_alignment (dynobj, srelgot, 2))
|
| 779 |
|
|
goto fail;
|
| 780 |
|
|
}
|
| 781 |
|
|
}
|
| 782 |
|
|
|
| 783 |
|
|
if (h != NULL)
|
| 784 |
|
|
{
|
| 785 |
|
|
if (h->got.offset != (bfd_vma) -1)
|
| 786 |
|
|
/* We have already allocated space in the .got. */
|
| 787 |
|
|
break;
|
| 788 |
|
|
|
| 789 |
|
|
h->got.offset = sgot->size;
|
| 790 |
|
|
|
| 791 |
|
|
/* Make sure this symbol is output as a dynamic symbol. */
|
| 792 |
|
|
if (h->dynindx == -1)
|
| 793 |
|
|
{
|
| 794 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 795 |
|
|
goto fail;
|
| 796 |
|
|
}
|
| 797 |
|
|
|
| 798 |
|
|
srelgot->size += sizeof (Elf32_External_Rela);
|
| 799 |
|
|
}
|
| 800 |
|
|
else
|
| 801 |
|
|
{
|
| 802 |
|
|
/* This is a global offset table entry for a local
|
| 803 |
|
|
symbol. */
|
| 804 |
|
|
if (local_got_offsets == NULL)
|
| 805 |
|
|
{
|
| 806 |
|
|
size_t size;
|
| 807 |
|
|
unsigned int i;
|
| 808 |
|
|
|
| 809 |
|
|
size = symtab_hdr->sh_info * sizeof (bfd_vma);
|
| 810 |
|
|
local_got_offsets = bfd_alloc (abfd, size);
|
| 811 |
|
|
|
| 812 |
|
|
if (local_got_offsets == NULL)
|
| 813 |
|
|
goto fail;
|
| 814 |
|
|
|
| 815 |
|
|
elf_local_got_offsets (abfd) = local_got_offsets;
|
| 816 |
|
|
|
| 817 |
|
|
for (i = 0; i < symtab_hdr->sh_info; i++)
|
| 818 |
|
|
local_got_offsets[i] = (bfd_vma) -1;
|
| 819 |
|
|
}
|
| 820 |
|
|
|
| 821 |
|
|
if (local_got_offsets[r_symndx] != (bfd_vma) -1)
|
| 822 |
|
|
/* We have already allocated space in the .got. */
|
| 823 |
|
|
break;
|
| 824 |
|
|
|
| 825 |
|
|
local_got_offsets[r_symndx] = sgot->size;
|
| 826 |
|
|
|
| 827 |
|
|
if (info->shared)
|
| 828 |
|
|
/* If we are generating a shared object, we need to
|
| 829 |
|
|
output a R_MN10300_RELATIVE reloc so that the dynamic
|
| 830 |
|
|
linker can adjust this GOT entry. */
|
| 831 |
|
|
srelgot->size += sizeof (Elf32_External_Rela);
|
| 832 |
|
|
}
|
| 833 |
|
|
|
| 834 |
|
|
sgot->size += 4;
|
| 835 |
|
|
break;
|
| 836 |
|
|
|
| 837 |
|
|
case R_MN10300_PLT32:
|
| 838 |
|
|
case R_MN10300_PLT16:
|
| 839 |
|
|
/* This symbol requires a procedure linkage table entry. We
|
| 840 |
|
|
actually build the entry in adjust_dynamic_symbol,
|
| 841 |
|
|
because this might be a case of linking PIC code which is
|
| 842 |
|
|
never referenced by a dynamic object, in which case we
|
| 843 |
|
|
don't need to generate a procedure linkage table entry
|
| 844 |
|
|
after all. */
|
| 845 |
|
|
|
| 846 |
|
|
/* If this is a local symbol, we resolve it directly without
|
| 847 |
|
|
creating a procedure linkage table entry. */
|
| 848 |
|
|
if (h == NULL)
|
| 849 |
|
|
continue;
|
| 850 |
|
|
|
| 851 |
|
|
if (ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
|
| 852 |
|
|
|| ELF_ST_VISIBILITY (h->other) == STV_HIDDEN)
|
| 853 |
|
|
break;
|
| 854 |
|
|
|
| 855 |
|
|
h->needs_plt = 1;
|
| 856 |
|
|
break;
|
| 857 |
|
|
|
| 858 |
|
|
case R_MN10300_24:
|
| 859 |
|
|
case R_MN10300_16:
|
| 860 |
|
|
case R_MN10300_8:
|
| 861 |
|
|
case R_MN10300_PCREL32:
|
| 862 |
|
|
case R_MN10300_PCREL16:
|
| 863 |
|
|
case R_MN10300_PCREL8:
|
| 864 |
|
|
if (h != NULL)
|
| 865 |
|
|
h->non_got_ref = 1;
|
| 866 |
|
|
break;
|
| 867 |
|
|
|
| 868 |
|
|
case R_MN10300_SYM_DIFF:
|
| 869 |
|
|
sym_diff_reloc_seen = TRUE;
|
| 870 |
|
|
break;
|
| 871 |
|
|
|
| 872 |
|
|
case R_MN10300_32:
|
| 873 |
|
|
if (h != NULL)
|
| 874 |
|
|
h->non_got_ref = 1;
|
| 875 |
|
|
|
| 876 |
|
|
/* If we are creating a shared library, then we
|
| 877 |
|
|
need to copy the reloc into the shared library. */
|
| 878 |
|
|
if (info->shared
|
| 879 |
|
|
&& (sec->flags & SEC_ALLOC) != 0
|
| 880 |
|
|
/* Do not generate a dynamic reloc for a
|
| 881 |
|
|
reloc associated with a SYM_DIFF operation. */
|
| 882 |
|
|
&& ! sym_diff_reloc_seen)
|
| 883 |
|
|
{
|
| 884 |
|
|
asection * sym_section = NULL;
|
| 885 |
|
|
|
| 886 |
|
|
/* Find the section containing the
|
| 887 |
|
|
symbol involved in the relocation. */
|
| 888 |
|
|
if (h == NULL)
|
| 889 |
|
|
{
|
| 890 |
|
|
Elf_Internal_Sym * isym;
|
| 891 |
|
|
|
| 892 |
|
|
if (isymbuf == NULL)
|
| 893 |
|
|
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
|
| 894 |
|
|
symtab_hdr->sh_info, 0,
|
| 895 |
|
|
NULL, NULL, NULL);
|
| 896 |
|
|
if (isymbuf)
|
| 897 |
|
|
{
|
| 898 |
|
|
isym = isymbuf + r_symndx;
|
| 899 |
|
|
/* All we care about is whether this local symbol is absolute. */
|
| 900 |
|
|
if (isym->st_shndx == SHN_ABS)
|
| 901 |
|
|
sym_section = bfd_abs_section_ptr;
|
| 902 |
|
|
}
|
| 903 |
|
|
}
|
| 904 |
|
|
else
|
| 905 |
|
|
{
|
| 906 |
|
|
if (h->root.type == bfd_link_hash_defined
|
| 907 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 908 |
|
|
sym_section = h->root.u.def.section;
|
| 909 |
|
|
}
|
| 910 |
|
|
|
| 911 |
|
|
/* If the symbol is absolute then the relocation can
|
| 912 |
|
|
be resolved during linking and there is no need for
|
| 913 |
|
|
a dynamic reloc. */
|
| 914 |
|
|
if (sym_section != bfd_abs_section_ptr)
|
| 915 |
|
|
{
|
| 916 |
|
|
/* When creating a shared object, we must copy these
|
| 917 |
|
|
reloc types into the output file. We create a reloc
|
| 918 |
|
|
section in dynobj and make room for this reloc. */
|
| 919 |
|
|
if (sreloc == NULL)
|
| 920 |
|
|
{
|
| 921 |
|
|
sreloc = _bfd_elf_make_dynamic_reloc_section
|
| 922 |
|
|
(sec, dynobj, 2, abfd, /*rela?*/ TRUE);
|
| 923 |
|
|
if (sreloc == NULL)
|
| 924 |
|
|
goto fail;
|
| 925 |
|
|
}
|
| 926 |
|
|
|
| 927 |
|
|
sreloc->size += sizeof (Elf32_External_Rela);
|
| 928 |
|
|
}
|
| 929 |
|
|
}
|
| 930 |
|
|
|
| 931 |
|
|
break;
|
| 932 |
|
|
}
|
| 933 |
|
|
|
| 934 |
|
|
if (ELF32_R_TYPE (rel->r_info) != R_MN10300_SYM_DIFF)
|
| 935 |
|
|
sym_diff_reloc_seen = FALSE;
|
| 936 |
|
|
}
|
| 937 |
|
|
|
| 938 |
|
|
result = TRUE;
|
| 939 |
|
|
fail:
|
| 940 |
|
|
if (isymbuf != NULL)
|
| 941 |
|
|
free (isymbuf);
|
| 942 |
|
|
|
| 943 |
|
|
return result;
|
| 944 |
|
|
}
|
| 945 |
|
|
|
| 946 |
|
|
/* Return the section that should be marked against GC for a given
|
| 947 |
|
|
relocation. */
|
| 948 |
|
|
|
| 949 |
|
|
static asection *
|
| 950 |
|
|
mn10300_elf_gc_mark_hook (asection *sec,
|
| 951 |
|
|
struct bfd_link_info *info,
|
| 952 |
|
|
Elf_Internal_Rela *rel,
|
| 953 |
|
|
struct elf_link_hash_entry *h,
|
| 954 |
|
|
Elf_Internal_Sym *sym)
|
| 955 |
|
|
{
|
| 956 |
|
|
if (h != NULL)
|
| 957 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
| 958 |
|
|
{
|
| 959 |
|
|
case R_MN10300_GNU_VTINHERIT:
|
| 960 |
|
|
case R_MN10300_GNU_VTENTRY:
|
| 961 |
|
|
return NULL;
|
| 962 |
|
|
}
|
| 963 |
|
|
|
| 964 |
|
|
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
| 965 |
|
|
}
|
| 966 |
|
|
|
| 967 |
|
|
/* Perform a relocation as part of a final link. */
|
| 968 |
|
|
|
| 969 |
|
|
static bfd_reloc_status_type
|
| 970 |
|
|
mn10300_elf_final_link_relocate (reloc_howto_type *howto,
|
| 971 |
|
|
bfd *input_bfd,
|
| 972 |
|
|
bfd *output_bfd ATTRIBUTE_UNUSED,
|
| 973 |
|
|
asection *input_section,
|
| 974 |
|
|
bfd_byte *contents,
|
| 975 |
|
|
bfd_vma offset,
|
| 976 |
|
|
bfd_vma value,
|
| 977 |
|
|
bfd_vma addend,
|
| 978 |
|
|
struct elf_link_hash_entry * h,
|
| 979 |
|
|
unsigned long symndx,
|
| 980 |
|
|
struct bfd_link_info *info,
|
| 981 |
|
|
asection *sym_sec ATTRIBUTE_UNUSED,
|
| 982 |
|
|
int is_local ATTRIBUTE_UNUSED)
|
| 983 |
|
|
{
|
| 984 |
|
|
static asection * sym_diff_section;
|
| 985 |
|
|
static bfd_vma sym_diff_value;
|
| 986 |
|
|
bfd_boolean is_sym_diff_reloc;
|
| 987 |
|
|
unsigned long r_type = howto->type;
|
| 988 |
|
|
bfd_byte * hit_data = contents + offset;
|
| 989 |
|
|
bfd * dynobj;
|
| 990 |
|
|
asection * sgot;
|
| 991 |
|
|
asection * splt;
|
| 992 |
|
|
asection * sreloc;
|
| 993 |
|
|
|
| 994 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 995 |
|
|
sgot = NULL;
|
| 996 |
|
|
splt = NULL;
|
| 997 |
|
|
sreloc = NULL;
|
| 998 |
|
|
|
| 999 |
|
|
switch (r_type)
|
| 1000 |
|
|
{
|
| 1001 |
|
|
case R_MN10300_24:
|
| 1002 |
|
|
case R_MN10300_16:
|
| 1003 |
|
|
case R_MN10300_8:
|
| 1004 |
|
|
case R_MN10300_PCREL8:
|
| 1005 |
|
|
case R_MN10300_PCREL16:
|
| 1006 |
|
|
case R_MN10300_PCREL32:
|
| 1007 |
|
|
case R_MN10300_GOTOFF32:
|
| 1008 |
|
|
case R_MN10300_GOTOFF24:
|
| 1009 |
|
|
case R_MN10300_GOTOFF16:
|
| 1010 |
|
|
if (info->shared
|
| 1011 |
|
|
&& (input_section->flags & SEC_ALLOC) != 0
|
| 1012 |
|
|
&& h != NULL
|
| 1013 |
|
|
&& ! SYMBOL_REFERENCES_LOCAL (info, h))
|
| 1014 |
|
|
return bfd_reloc_dangerous;
|
| 1015 |
|
|
}
|
| 1016 |
|
|
|
| 1017 |
|
|
is_sym_diff_reloc = FALSE;
|
| 1018 |
|
|
if (sym_diff_section != NULL)
|
| 1019 |
|
|
{
|
| 1020 |
|
|
BFD_ASSERT (sym_diff_section == input_section);
|
| 1021 |
|
|
|
| 1022 |
|
|
switch (r_type)
|
| 1023 |
|
|
{
|
| 1024 |
|
|
case R_MN10300_32:
|
| 1025 |
|
|
case R_MN10300_24:
|
| 1026 |
|
|
case R_MN10300_16:
|
| 1027 |
|
|
case R_MN10300_8:
|
| 1028 |
|
|
value -= sym_diff_value;
|
| 1029 |
|
|
/* If we are computing a 32-bit value for the location lists
|
| 1030 |
|
|
and the result is 0 then we add one to the value. A zero
|
| 1031 |
|
|
value can result because of linker relaxation deleteing
|
| 1032 |
|
|
prologue instructions and using a value of 1 (for the begin
|
| 1033 |
|
|
and end offsets in the location list entry) results in a
|
| 1034 |
|
|
nul entry which does not prevent the following entries from
|
| 1035 |
|
|
being parsed. */
|
| 1036 |
|
|
if (r_type == R_MN10300_32
|
| 1037 |
|
|
&& value == 0
|
| 1038 |
|
|
&& strcmp (input_section->name, ".debug_loc") == 0)
|
| 1039 |
|
|
value = 1;
|
| 1040 |
|
|
sym_diff_section = NULL;
|
| 1041 |
|
|
is_sym_diff_reloc = TRUE;
|
| 1042 |
|
|
break;
|
| 1043 |
|
|
|
| 1044 |
|
|
default:
|
| 1045 |
|
|
sym_diff_section = NULL;
|
| 1046 |
|
|
break;
|
| 1047 |
|
|
}
|
| 1048 |
|
|
}
|
| 1049 |
|
|
|
| 1050 |
|
|
switch (r_type)
|
| 1051 |
|
|
{
|
| 1052 |
|
|
case R_MN10300_SYM_DIFF:
|
| 1053 |
|
|
BFD_ASSERT (addend == 0);
|
| 1054 |
|
|
/* Cache the input section and value.
|
| 1055 |
|
|
The offset is unreliable, since relaxation may
|
| 1056 |
|
|
have reduced the following reloc's offset. */
|
| 1057 |
|
|
sym_diff_section = input_section;
|
| 1058 |
|
|
sym_diff_value = value;
|
| 1059 |
|
|
return bfd_reloc_ok;
|
| 1060 |
|
|
|
| 1061 |
|
|
case R_MN10300_ALIGN:
|
| 1062 |
|
|
case R_MN10300_NONE:
|
| 1063 |
|
|
return bfd_reloc_ok;
|
| 1064 |
|
|
|
| 1065 |
|
|
case R_MN10300_32:
|
| 1066 |
|
|
if (info->shared
|
| 1067 |
|
|
/* Do not generate relocs when an R_MN10300_32 has been used
|
| 1068 |
|
|
with an R_MN10300_SYM_DIFF to compute a difference of two
|
| 1069 |
|
|
symbols. */
|
| 1070 |
|
|
&& is_sym_diff_reloc == FALSE
|
| 1071 |
|
|
/* Also, do not generate a reloc when the symbol associated
|
| 1072 |
|
|
with the R_MN10300_32 reloc is absolute - there is no
|
| 1073 |
|
|
need for a run time computation in this case. */
|
| 1074 |
|
|
&& sym_sec != bfd_abs_section_ptr
|
| 1075 |
|
|
/* If the section is not going to be allocated at load time
|
| 1076 |
|
|
then there is no need to generate relocs for it. */
|
| 1077 |
|
|
&& (input_section->flags & SEC_ALLOC) != 0)
|
| 1078 |
|
|
{
|
| 1079 |
|
|
Elf_Internal_Rela outrel;
|
| 1080 |
|
|
bfd_boolean skip, relocate;
|
| 1081 |
|
|
|
| 1082 |
|
|
/* When generating a shared object, these relocations are
|
| 1083 |
|
|
copied into the output file to be resolved at run
|
| 1084 |
|
|
time. */
|
| 1085 |
|
|
if (sreloc == NULL)
|
| 1086 |
|
|
{
|
| 1087 |
|
|
sreloc = _bfd_elf_get_dynamic_reloc_section
|
| 1088 |
|
|
(input_bfd, input_section, /*rela?*/ TRUE);
|
| 1089 |
|
|
if (sreloc == NULL)
|
| 1090 |
|
|
return FALSE;
|
| 1091 |
|
|
}
|
| 1092 |
|
|
|
| 1093 |
|
|
skip = FALSE;
|
| 1094 |
|
|
|
| 1095 |
|
|
outrel.r_offset = _bfd_elf_section_offset (input_bfd, info,
|
| 1096 |
|
|
input_section, offset);
|
| 1097 |
|
|
if (outrel.r_offset == (bfd_vma) -1)
|
| 1098 |
|
|
skip = TRUE;
|
| 1099 |
|
|
|
| 1100 |
|
|
outrel.r_offset += (input_section->output_section->vma
|
| 1101 |
|
|
+ input_section->output_offset);
|
| 1102 |
|
|
|
| 1103 |
|
|
if (skip)
|
| 1104 |
|
|
{
|
| 1105 |
|
|
memset (&outrel, 0, sizeof outrel);
|
| 1106 |
|
|
relocate = FALSE;
|
| 1107 |
|
|
}
|
| 1108 |
|
|
else
|
| 1109 |
|
|
{
|
| 1110 |
|
|
/* h->dynindx may be -1 if this symbol was marked to
|
| 1111 |
|
|
become local. */
|
| 1112 |
|
|
if (h == NULL
|
| 1113 |
|
|
|| SYMBOL_REFERENCES_LOCAL (info, h))
|
| 1114 |
|
|
{
|
| 1115 |
|
|
relocate = TRUE;
|
| 1116 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
|
| 1117 |
|
|
outrel.r_addend = value + addend;
|
| 1118 |
|
|
}
|
| 1119 |
|
|
else
|
| 1120 |
|
|
{
|
| 1121 |
|
|
BFD_ASSERT (h->dynindx != -1);
|
| 1122 |
|
|
relocate = FALSE;
|
| 1123 |
|
|
outrel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_32);
|
| 1124 |
|
|
outrel.r_addend = value + addend;
|
| 1125 |
|
|
}
|
| 1126 |
|
|
}
|
| 1127 |
|
|
|
| 1128 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &outrel,
|
| 1129 |
|
|
(bfd_byte *) (((Elf32_External_Rela *) sreloc->contents)
|
| 1130 |
|
|
+ sreloc->reloc_count));
|
| 1131 |
|
|
++sreloc->reloc_count;
|
| 1132 |
|
|
|
| 1133 |
|
|
/* If this reloc is against an external symbol, we do
|
| 1134 |
|
|
not want to fiddle with the addend. Otherwise, we
|
| 1135 |
|
|
need to include the symbol value so that it becomes
|
| 1136 |
|
|
an addend for the dynamic reloc. */
|
| 1137 |
|
|
if (! relocate)
|
| 1138 |
|
|
return bfd_reloc_ok;
|
| 1139 |
|
|
}
|
| 1140 |
|
|
value += addend;
|
| 1141 |
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
| 1142 |
|
|
return bfd_reloc_ok;
|
| 1143 |
|
|
|
| 1144 |
|
|
case R_MN10300_24:
|
| 1145 |
|
|
value += addend;
|
| 1146 |
|
|
|
| 1147 |
|
|
if ((long) value > 0x7fffff || (long) value < -0x800000)
|
| 1148 |
|
|
return bfd_reloc_overflow;
|
| 1149 |
|
|
|
| 1150 |
|
|
bfd_put_8 (input_bfd, value & 0xff, hit_data);
|
| 1151 |
|
|
bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
|
| 1152 |
|
|
bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
|
| 1153 |
|
|
return bfd_reloc_ok;
|
| 1154 |
|
|
|
| 1155 |
|
|
case R_MN10300_16:
|
| 1156 |
|
|
value += addend;
|
| 1157 |
|
|
|
| 1158 |
|
|
if ((long) value > 0x7fff || (long) value < -0x8000)
|
| 1159 |
|
|
return bfd_reloc_overflow;
|
| 1160 |
|
|
|
| 1161 |
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
| 1162 |
|
|
return bfd_reloc_ok;
|
| 1163 |
|
|
|
| 1164 |
|
|
case R_MN10300_8:
|
| 1165 |
|
|
value += addend;
|
| 1166 |
|
|
|
| 1167 |
|
|
if ((long) value > 0x7f || (long) value < -0x80)
|
| 1168 |
|
|
return bfd_reloc_overflow;
|
| 1169 |
|
|
|
| 1170 |
|
|
bfd_put_8 (input_bfd, value, hit_data);
|
| 1171 |
|
|
return bfd_reloc_ok;
|
| 1172 |
|
|
|
| 1173 |
|
|
case R_MN10300_PCREL8:
|
| 1174 |
|
|
value -= (input_section->output_section->vma
|
| 1175 |
|
|
+ input_section->output_offset);
|
| 1176 |
|
|
value -= offset;
|
| 1177 |
|
|
value += addend;
|
| 1178 |
|
|
|
| 1179 |
|
|
if ((long) value > 0x7f || (long) value < -0x80)
|
| 1180 |
|
|
return bfd_reloc_overflow;
|
| 1181 |
|
|
|
| 1182 |
|
|
bfd_put_8 (input_bfd, value, hit_data);
|
| 1183 |
|
|
return bfd_reloc_ok;
|
| 1184 |
|
|
|
| 1185 |
|
|
case R_MN10300_PCREL16:
|
| 1186 |
|
|
value -= (input_section->output_section->vma
|
| 1187 |
|
|
+ input_section->output_offset);
|
| 1188 |
|
|
value -= offset;
|
| 1189 |
|
|
value += addend;
|
| 1190 |
|
|
|
| 1191 |
|
|
if ((long) value > 0x7fff || (long) value < -0x8000)
|
| 1192 |
|
|
return bfd_reloc_overflow;
|
| 1193 |
|
|
|
| 1194 |
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
| 1195 |
|
|
return bfd_reloc_ok;
|
| 1196 |
|
|
|
| 1197 |
|
|
case R_MN10300_PCREL32:
|
| 1198 |
|
|
value -= (input_section->output_section->vma
|
| 1199 |
|
|
+ input_section->output_offset);
|
| 1200 |
|
|
value -= offset;
|
| 1201 |
|
|
value += addend;
|
| 1202 |
|
|
|
| 1203 |
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
| 1204 |
|
|
return bfd_reloc_ok;
|
| 1205 |
|
|
|
| 1206 |
|
|
case R_MN10300_GNU_VTINHERIT:
|
| 1207 |
|
|
case R_MN10300_GNU_VTENTRY:
|
| 1208 |
|
|
return bfd_reloc_ok;
|
| 1209 |
|
|
|
| 1210 |
|
|
case R_MN10300_GOTPC32:
|
| 1211 |
|
|
/* Use global offset table as symbol value. */
|
| 1212 |
|
|
value = bfd_get_section_by_name (dynobj,
|
| 1213 |
|
|
".got")->output_section->vma;
|
| 1214 |
|
|
value -= (input_section->output_section->vma
|
| 1215 |
|
|
+ input_section->output_offset);
|
| 1216 |
|
|
value -= offset;
|
| 1217 |
|
|
value += addend;
|
| 1218 |
|
|
|
| 1219 |
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
| 1220 |
|
|
return bfd_reloc_ok;
|
| 1221 |
|
|
|
| 1222 |
|
|
case R_MN10300_GOTPC16:
|
| 1223 |
|
|
/* Use global offset table as symbol value. */
|
| 1224 |
|
|
value = bfd_get_section_by_name (dynobj,
|
| 1225 |
|
|
".got")->output_section->vma;
|
| 1226 |
|
|
value -= (input_section->output_section->vma
|
| 1227 |
|
|
+ input_section->output_offset);
|
| 1228 |
|
|
value -= offset;
|
| 1229 |
|
|
value += addend;
|
| 1230 |
|
|
|
| 1231 |
|
|
if ((long) value > 0x7fff || (long) value < -0x8000)
|
| 1232 |
|
|
return bfd_reloc_overflow;
|
| 1233 |
|
|
|
| 1234 |
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
| 1235 |
|
|
return bfd_reloc_ok;
|
| 1236 |
|
|
|
| 1237 |
|
|
case R_MN10300_GOTOFF32:
|
| 1238 |
|
|
value -= bfd_get_section_by_name (dynobj,
|
| 1239 |
|
|
".got")->output_section->vma;
|
| 1240 |
|
|
value += addend;
|
| 1241 |
|
|
|
| 1242 |
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
| 1243 |
|
|
return bfd_reloc_ok;
|
| 1244 |
|
|
|
| 1245 |
|
|
case R_MN10300_GOTOFF24:
|
| 1246 |
|
|
value -= bfd_get_section_by_name (dynobj,
|
| 1247 |
|
|
".got")->output_section->vma;
|
| 1248 |
|
|
value += addend;
|
| 1249 |
|
|
|
| 1250 |
|
|
if ((long) value > 0x7fffff || (long) value < -0x800000)
|
| 1251 |
|
|
return bfd_reloc_overflow;
|
| 1252 |
|
|
|
| 1253 |
|
|
bfd_put_8 (input_bfd, value, hit_data);
|
| 1254 |
|
|
bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
|
| 1255 |
|
|
bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
|
| 1256 |
|
|
return bfd_reloc_ok;
|
| 1257 |
|
|
|
| 1258 |
|
|
case R_MN10300_GOTOFF16:
|
| 1259 |
|
|
value -= bfd_get_section_by_name (dynobj,
|
| 1260 |
|
|
".got")->output_section->vma;
|
| 1261 |
|
|
value += addend;
|
| 1262 |
|
|
|
| 1263 |
|
|
if ((long) value > 0x7fff || (long) value < -0x8000)
|
| 1264 |
|
|
return bfd_reloc_overflow;
|
| 1265 |
|
|
|
| 1266 |
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
| 1267 |
|
|
return bfd_reloc_ok;
|
| 1268 |
|
|
|
| 1269 |
|
|
case R_MN10300_PLT32:
|
| 1270 |
|
|
if (h != NULL
|
| 1271 |
|
|
&& ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
|
| 1272 |
|
|
&& ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
|
| 1273 |
|
|
&& h->plt.offset != (bfd_vma) -1)
|
| 1274 |
|
|
{
|
| 1275 |
|
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
| 1276 |
|
|
|
| 1277 |
|
|
value = (splt->output_section->vma
|
| 1278 |
|
|
+ splt->output_offset
|
| 1279 |
|
|
+ h->plt.offset) - value;
|
| 1280 |
|
|
}
|
| 1281 |
|
|
|
| 1282 |
|
|
value -= (input_section->output_section->vma
|
| 1283 |
|
|
+ input_section->output_offset);
|
| 1284 |
|
|
value -= offset;
|
| 1285 |
|
|
value += addend;
|
| 1286 |
|
|
|
| 1287 |
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
| 1288 |
|
|
return bfd_reloc_ok;
|
| 1289 |
|
|
|
| 1290 |
|
|
case R_MN10300_PLT16:
|
| 1291 |
|
|
if (h != NULL
|
| 1292 |
|
|
&& ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
|
| 1293 |
|
|
&& ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
|
| 1294 |
|
|
&& h->plt.offset != (bfd_vma) -1)
|
| 1295 |
|
|
{
|
| 1296 |
|
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
| 1297 |
|
|
|
| 1298 |
|
|
value = (splt->output_section->vma
|
| 1299 |
|
|
+ splt->output_offset
|
| 1300 |
|
|
+ h->plt.offset) - value;
|
| 1301 |
|
|
}
|
| 1302 |
|
|
|
| 1303 |
|
|
value -= (input_section->output_section->vma
|
| 1304 |
|
|
+ input_section->output_offset);
|
| 1305 |
|
|
value -= offset;
|
| 1306 |
|
|
value += addend;
|
| 1307 |
|
|
|
| 1308 |
|
|
if ((long) value > 0x7fff || (long) value < -0x8000)
|
| 1309 |
|
|
return bfd_reloc_overflow;
|
| 1310 |
|
|
|
| 1311 |
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
| 1312 |
|
|
return bfd_reloc_ok;
|
| 1313 |
|
|
|
| 1314 |
|
|
case R_MN10300_GOT32:
|
| 1315 |
|
|
case R_MN10300_GOT24:
|
| 1316 |
|
|
case R_MN10300_GOT16:
|
| 1317 |
|
|
{
|
| 1318 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got");
|
| 1319 |
|
|
|
| 1320 |
|
|
if (h != NULL)
|
| 1321 |
|
|
{
|
| 1322 |
|
|
bfd_vma off;
|
| 1323 |
|
|
|
| 1324 |
|
|
off = h->got.offset;
|
| 1325 |
|
|
BFD_ASSERT (off != (bfd_vma) -1);
|
| 1326 |
|
|
|
| 1327 |
|
|
if (! elf_hash_table (info)->dynamic_sections_created
|
| 1328 |
|
|
|| SYMBOL_REFERENCES_LOCAL (info, h))
|
| 1329 |
|
|
/* This is actually a static link, or it is a
|
| 1330 |
|
|
-Bsymbolic link and the symbol is defined
|
| 1331 |
|
|
locally, or the symbol was forced to be local
|
| 1332 |
|
|
because of a version file. We must initialize
|
| 1333 |
|
|
this entry in the global offset table.
|
| 1334 |
|
|
|
| 1335 |
|
|
When doing a dynamic link, we create a .rela.got
|
| 1336 |
|
|
relocation entry to initialize the value. This
|
| 1337 |
|
|
is done in the finish_dynamic_symbol routine. */
|
| 1338 |
|
|
bfd_put_32 (output_bfd, value,
|
| 1339 |
|
|
sgot->contents + off);
|
| 1340 |
|
|
|
| 1341 |
|
|
value = sgot->output_offset + off;
|
| 1342 |
|
|
}
|
| 1343 |
|
|
else
|
| 1344 |
|
|
{
|
| 1345 |
|
|
bfd_vma off;
|
| 1346 |
|
|
|
| 1347 |
|
|
off = elf_local_got_offsets (input_bfd)[symndx];
|
| 1348 |
|
|
|
| 1349 |
|
|
bfd_put_32 (output_bfd, value, sgot->contents + off);
|
| 1350 |
|
|
|
| 1351 |
|
|
if (info->shared)
|
| 1352 |
|
|
{
|
| 1353 |
|
|
asection * srelgot;
|
| 1354 |
|
|
Elf_Internal_Rela outrel;
|
| 1355 |
|
|
|
| 1356 |
|
|
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
|
| 1357 |
|
|
BFD_ASSERT (srelgot != NULL);
|
| 1358 |
|
|
|
| 1359 |
|
|
outrel.r_offset = (sgot->output_section->vma
|
| 1360 |
|
|
+ sgot->output_offset
|
| 1361 |
|
|
+ off);
|
| 1362 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
|
| 1363 |
|
|
outrel.r_addend = value;
|
| 1364 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &outrel,
|
| 1365 |
|
|
(bfd_byte *) (((Elf32_External_Rela *)
|
| 1366 |
|
|
srelgot->contents)
|
| 1367 |
|
|
+ srelgot->reloc_count));
|
| 1368 |
|
|
++ srelgot->reloc_count;
|
| 1369 |
|
|
}
|
| 1370 |
|
|
|
| 1371 |
|
|
value = sgot->output_offset + off;
|
| 1372 |
|
|
}
|
| 1373 |
|
|
}
|
| 1374 |
|
|
|
| 1375 |
|
|
value += addend;
|
| 1376 |
|
|
|
| 1377 |
|
|
if (r_type == R_MN10300_GOT32)
|
| 1378 |
|
|
{
|
| 1379 |
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
| 1380 |
|
|
return bfd_reloc_ok;
|
| 1381 |
|
|
}
|
| 1382 |
|
|
else if (r_type == R_MN10300_GOT24)
|
| 1383 |
|
|
{
|
| 1384 |
|
|
if ((long) value > 0x7fffff || (long) value < -0x800000)
|
| 1385 |
|
|
return bfd_reloc_overflow;
|
| 1386 |
|
|
|
| 1387 |
|
|
bfd_put_8 (input_bfd, value & 0xff, hit_data);
|
| 1388 |
|
|
bfd_put_8 (input_bfd, (value >> 8) & 0xff, hit_data + 1);
|
| 1389 |
|
|
bfd_put_8 (input_bfd, (value >> 16) & 0xff, hit_data + 2);
|
| 1390 |
|
|
return bfd_reloc_ok;
|
| 1391 |
|
|
}
|
| 1392 |
|
|
else if (r_type == R_MN10300_GOT16)
|
| 1393 |
|
|
{
|
| 1394 |
|
|
if ((long) value > 0x7fff || (long) value < -0x8000)
|
| 1395 |
|
|
return bfd_reloc_overflow;
|
| 1396 |
|
|
|
| 1397 |
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
| 1398 |
|
|
return bfd_reloc_ok;
|
| 1399 |
|
|
}
|
| 1400 |
|
|
/* Fall through. */
|
| 1401 |
|
|
|
| 1402 |
|
|
default:
|
| 1403 |
|
|
return bfd_reloc_notsupported;
|
| 1404 |
|
|
}
|
| 1405 |
|
|
}
|
| 1406 |
|
|
|
| 1407 |
|
|
/* Relocate an MN10300 ELF section. */
|
| 1408 |
|
|
|
| 1409 |
|
|
static bfd_boolean
|
| 1410 |
|
|
mn10300_elf_relocate_section (bfd *output_bfd,
|
| 1411 |
|
|
struct bfd_link_info *info,
|
| 1412 |
|
|
bfd *input_bfd,
|
| 1413 |
|
|
asection *input_section,
|
| 1414 |
|
|
bfd_byte *contents,
|
| 1415 |
|
|
Elf_Internal_Rela *relocs,
|
| 1416 |
|
|
Elf_Internal_Sym *local_syms,
|
| 1417 |
|
|
asection **local_sections)
|
| 1418 |
|
|
{
|
| 1419 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 1420 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 1421 |
|
|
Elf_Internal_Rela *rel, *relend;
|
| 1422 |
|
|
|
| 1423 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
| 1424 |
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
| 1425 |
|
|
|
| 1426 |
|
|
rel = relocs;
|
| 1427 |
|
|
relend = relocs + input_section->reloc_count;
|
| 1428 |
|
|
for (; rel < relend; rel++)
|
| 1429 |
|
|
{
|
| 1430 |
|
|
int r_type;
|
| 1431 |
|
|
reloc_howto_type *howto;
|
| 1432 |
|
|
unsigned long r_symndx;
|
| 1433 |
|
|
Elf_Internal_Sym *sym;
|
| 1434 |
|
|
asection *sec;
|
| 1435 |
|
|
struct elf32_mn10300_link_hash_entry *h;
|
| 1436 |
|
|
bfd_vma relocation;
|
| 1437 |
|
|
bfd_reloc_status_type r;
|
| 1438 |
|
|
|
| 1439 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 1440 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 1441 |
|
|
howto = elf_mn10300_howto_table + r_type;
|
| 1442 |
|
|
|
| 1443 |
|
|
/* Just skip the vtable gc relocs. */
|
| 1444 |
|
|
if (r_type == R_MN10300_GNU_VTINHERIT
|
| 1445 |
|
|
|| r_type == R_MN10300_GNU_VTENTRY)
|
| 1446 |
|
|
continue;
|
| 1447 |
|
|
|
| 1448 |
|
|
h = NULL;
|
| 1449 |
|
|
sym = NULL;
|
| 1450 |
|
|
sec = NULL;
|
| 1451 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 1452 |
|
|
{
|
| 1453 |
|
|
sym = local_syms + r_symndx;
|
| 1454 |
|
|
sec = local_sections[r_symndx];
|
| 1455 |
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
| 1456 |
|
|
}
|
| 1457 |
|
|
else
|
| 1458 |
|
|
{
|
| 1459 |
|
|
bfd_boolean unresolved_reloc;
|
| 1460 |
|
|
bfd_boolean warned;
|
| 1461 |
|
|
struct elf_link_hash_entry *hh;
|
| 1462 |
|
|
|
| 1463 |
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
| 1464 |
|
|
r_symndx, symtab_hdr, sym_hashes,
|
| 1465 |
|
|
hh, sec, relocation,
|
| 1466 |
|
|
unresolved_reloc, warned);
|
| 1467 |
|
|
|
| 1468 |
|
|
h = (struct elf32_mn10300_link_hash_entry *) hh;
|
| 1469 |
|
|
|
| 1470 |
|
|
if ((h->root.root.type == bfd_link_hash_defined
|
| 1471 |
|
|
|| h->root.root.type == bfd_link_hash_defweak)
|
| 1472 |
|
|
&& ( r_type == R_MN10300_GOTPC32
|
| 1473 |
|
|
|| r_type == R_MN10300_GOTPC16
|
| 1474 |
|
|
|| (( r_type == R_MN10300_PLT32
|
| 1475 |
|
|
|| r_type == R_MN10300_PLT16)
|
| 1476 |
|
|
&& ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
|
| 1477 |
|
|
&& ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
|
| 1478 |
|
|
&& h->root.plt.offset != (bfd_vma) -1)
|
| 1479 |
|
|
|| (( r_type == R_MN10300_GOT32
|
| 1480 |
|
|
|| r_type == R_MN10300_GOT24
|
| 1481 |
|
|
|| r_type == R_MN10300_GOT16)
|
| 1482 |
|
|
&& elf_hash_table (info)->dynamic_sections_created
|
| 1483 |
|
|
&& !SYMBOL_REFERENCES_LOCAL (info, hh))
|
| 1484 |
|
|
|| (r_type == R_MN10300_32
|
| 1485 |
|
|
/* _32 relocs in executables force _COPY relocs,
|
| 1486 |
|
|
such that the address of the symbol ends up
|
| 1487 |
|
|
being local. */
|
| 1488 |
|
|
&& !info->executable
|
| 1489 |
|
|
&& !SYMBOL_REFERENCES_LOCAL (info, hh)
|
| 1490 |
|
|
&& ((input_section->flags & SEC_ALLOC) != 0
|
| 1491 |
|
|
/* DWARF will emit R_MN10300_32 relocations
|
| 1492 |
|
|
in its sections against symbols defined
|
| 1493 |
|
|
externally in shared libraries. We can't
|
| 1494 |
|
|
do anything with them here. */
|
| 1495 |
|
|
|| ((input_section->flags & SEC_DEBUGGING) != 0
|
| 1496 |
|
|
&& h->root.def_dynamic)))))
|
| 1497 |
|
|
/* In these cases, we don't need the relocation
|
| 1498 |
|
|
value. We check specially because in some
|
| 1499 |
|
|
obscure cases sec->output_section will be NULL. */
|
| 1500 |
|
|
relocation = 0;
|
| 1501 |
|
|
|
| 1502 |
163 |
khays |
else if (!info->relocatable && unresolved_reloc
|
| 1503 |
|
|
&& _bfd_elf_section_offset (output_bfd, info, input_section,
|
| 1504 |
|
|
rel->r_offset) != (bfd_vma) -1)
|
| 1505 |
|
|
|
| 1506 |
14 |
khays |
(*_bfd_error_handler)
|
| 1507 |
|
|
(_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
|
| 1508 |
|
|
input_bfd,
|
| 1509 |
|
|
input_section,
|
| 1510 |
|
|
(long) rel->r_offset,
|
| 1511 |
|
|
howto->name,
|
| 1512 |
|
|
h->root.root.root.string);
|
| 1513 |
|
|
}
|
| 1514 |
|
|
|
| 1515 |
|
|
if (sec != NULL && elf_discarded_section (sec))
|
| 1516 |
|
|
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
|
| 1517 |
|
|
rel, relend, howto, contents);
|
| 1518 |
|
|
|
| 1519 |
|
|
if (info->relocatable)
|
| 1520 |
|
|
continue;
|
| 1521 |
|
|
|
| 1522 |
|
|
r = mn10300_elf_final_link_relocate (howto, input_bfd, output_bfd,
|
| 1523 |
|
|
input_section,
|
| 1524 |
|
|
contents, rel->r_offset,
|
| 1525 |
|
|
relocation, rel->r_addend,
|
| 1526 |
|
|
(struct elf_link_hash_entry *) h,
|
| 1527 |
|
|
r_symndx,
|
| 1528 |
|
|
info, sec, h == NULL);
|
| 1529 |
|
|
|
| 1530 |
|
|
if (r != bfd_reloc_ok)
|
| 1531 |
|
|
{
|
| 1532 |
|
|
const char *name;
|
| 1533 |
|
|
const char *msg = NULL;
|
| 1534 |
|
|
|
| 1535 |
|
|
if (h != NULL)
|
| 1536 |
|
|
name = h->root.root.root.string;
|
| 1537 |
|
|
else
|
| 1538 |
|
|
{
|
| 1539 |
|
|
name = (bfd_elf_string_from_elf_section
|
| 1540 |
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name));
|
| 1541 |
|
|
if (name == NULL || *name == '\0')
|
| 1542 |
|
|
name = bfd_section_name (input_bfd, sec);
|
| 1543 |
|
|
}
|
| 1544 |
|
|
|
| 1545 |
|
|
switch (r)
|
| 1546 |
|
|
{
|
| 1547 |
|
|
case bfd_reloc_overflow:
|
| 1548 |
|
|
if (! ((*info->callbacks->reloc_overflow)
|
| 1549 |
|
|
(info, (h ? &h->root.root : NULL), name,
|
| 1550 |
|
|
howto->name, (bfd_vma) 0, input_bfd,
|
| 1551 |
|
|
input_section, rel->r_offset)))
|
| 1552 |
|
|
return FALSE;
|
| 1553 |
|
|
break;
|
| 1554 |
|
|
|
| 1555 |
|
|
case bfd_reloc_undefined:
|
| 1556 |
|
|
if (! ((*info->callbacks->undefined_symbol)
|
| 1557 |
|
|
(info, name, input_bfd, input_section,
|
| 1558 |
|
|
rel->r_offset, TRUE)))
|
| 1559 |
|
|
return FALSE;
|
| 1560 |
|
|
break;
|
| 1561 |
|
|
|
| 1562 |
|
|
case bfd_reloc_outofrange:
|
| 1563 |
|
|
msg = _("internal error: out of range error");
|
| 1564 |
|
|
goto common_error;
|
| 1565 |
|
|
|
| 1566 |
|
|
case bfd_reloc_notsupported:
|
| 1567 |
|
|
msg = _("internal error: unsupported relocation error");
|
| 1568 |
|
|
goto common_error;
|
| 1569 |
|
|
|
| 1570 |
|
|
case bfd_reloc_dangerous:
|
| 1571 |
|
|
if (r_type == R_MN10300_PCREL32)
|
| 1572 |
|
|
msg = _("error: inappropriate relocation type for shared"
|
| 1573 |
|
|
" library (did you forget -fpic?)");
|
| 1574 |
|
|
else
|
| 1575 |
|
|
msg = _("internal error: suspicious relocation type used"
|
| 1576 |
|
|
" in shared library");
|
| 1577 |
|
|
goto common_error;
|
| 1578 |
|
|
|
| 1579 |
|
|
default:
|
| 1580 |
|
|
msg = _("internal error: unknown error");
|
| 1581 |
|
|
/* Fall through. */
|
| 1582 |
|
|
|
| 1583 |
|
|
common_error:
|
| 1584 |
|
|
if (!((*info->callbacks->warning)
|
| 1585 |
|
|
(info, msg, name, input_bfd, input_section,
|
| 1586 |
|
|
rel->r_offset)))
|
| 1587 |
|
|
return FALSE;
|
| 1588 |
|
|
break;
|
| 1589 |
|
|
}
|
| 1590 |
|
|
}
|
| 1591 |
|
|
}
|
| 1592 |
|
|
|
| 1593 |
|
|
return TRUE;
|
| 1594 |
|
|
}
|
| 1595 |
|
|
|
| 1596 |
|
|
/* Finish initializing one hash table entry. */
|
| 1597 |
|
|
|
| 1598 |
|
|
static bfd_boolean
|
| 1599 |
|
|
elf32_mn10300_finish_hash_table_entry (struct bfd_hash_entry *gen_entry,
|
| 1600 |
|
|
void * in_args)
|
| 1601 |
|
|
{
|
| 1602 |
|
|
struct elf32_mn10300_link_hash_entry *entry;
|
| 1603 |
|
|
struct bfd_link_info *link_info = (struct bfd_link_info *) in_args;
|
| 1604 |
|
|
unsigned int byte_count = 0;
|
| 1605 |
|
|
|
| 1606 |
|
|
entry = (struct elf32_mn10300_link_hash_entry *) gen_entry;
|
| 1607 |
|
|
|
| 1608 |
|
|
/* If we already know we want to convert "call" to "calls" for calls
|
| 1609 |
|
|
to this symbol, then return now. */
|
| 1610 |
|
|
if (entry->flags == MN10300_CONVERT_CALL_TO_CALLS)
|
| 1611 |
|
|
return TRUE;
|
| 1612 |
|
|
|
| 1613 |
|
|
/* If there are no named calls to this symbol, or there's nothing we
|
| 1614 |
|
|
can move from the function itself into the "call" instruction,
|
| 1615 |
|
|
then note that all "call" instructions should be converted into
|
| 1616 |
|
|
"calls" instructions and return. If a symbol is available for
|
| 1617 |
|
|
dynamic symbol resolution (overridable or overriding), avoid
|
| 1618 |
|
|
custom calling conventions. */
|
| 1619 |
|
|
if (entry->direct_calls == 0
|
| 1620 |
|
|
|| (entry->stack_size == 0 && entry->movm_args == 0)
|
| 1621 |
|
|
|| (elf_hash_table (link_info)->dynamic_sections_created
|
| 1622 |
|
|
&& ELF_ST_VISIBILITY (entry->root.other) != STV_INTERNAL
|
| 1623 |
|
|
&& ELF_ST_VISIBILITY (entry->root.other) != STV_HIDDEN))
|
| 1624 |
|
|
{
|
| 1625 |
|
|
/* Make a note that we should convert "call" instructions to "calls"
|
| 1626 |
|
|
instructions for calls to this symbol. */
|
| 1627 |
|
|
entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
|
| 1628 |
|
|
return TRUE;
|
| 1629 |
|
|
}
|
| 1630 |
|
|
|
| 1631 |
|
|
/* We may be able to move some instructions from the function itself into
|
| 1632 |
|
|
the "call" instruction. Count how many bytes we might be able to
|
| 1633 |
|
|
eliminate in the function itself. */
|
| 1634 |
|
|
|
| 1635 |
|
|
/* A movm instruction is two bytes. */
|
| 1636 |
|
|
if (entry->movm_args)
|
| 1637 |
|
|
byte_count += 2;
|
| 1638 |
|
|
|
| 1639 |
|
|
/* Count the insn to allocate stack space too. */
|
| 1640 |
|
|
if (entry->stack_size > 0)
|
| 1641 |
|
|
{
|
| 1642 |
|
|
if (entry->stack_size <= 128)
|
| 1643 |
|
|
byte_count += 3;
|
| 1644 |
|
|
else
|
| 1645 |
|
|
byte_count += 4;
|
| 1646 |
|
|
}
|
| 1647 |
|
|
|
| 1648 |
|
|
/* If using "call" will result in larger code, then turn all
|
| 1649 |
|
|
the associated "call" instructions into "calls" instructions. */
|
| 1650 |
|
|
if (byte_count < entry->direct_calls)
|
| 1651 |
|
|
entry->flags |= MN10300_CONVERT_CALL_TO_CALLS;
|
| 1652 |
|
|
|
| 1653 |
|
|
/* This routine never fails. */
|
| 1654 |
|
|
return TRUE;
|
| 1655 |
|
|
}
|
| 1656 |
|
|
|
| 1657 |
|
|
/* Used to count hash table entries. */
|
| 1658 |
|
|
|
| 1659 |
|
|
static bfd_boolean
|
| 1660 |
|
|
elf32_mn10300_count_hash_table_entries (struct bfd_hash_entry *gen_entry ATTRIBUTE_UNUSED,
|
| 1661 |
|
|
void * in_args)
|
| 1662 |
|
|
{
|
| 1663 |
|
|
int *count = (int *) in_args;
|
| 1664 |
|
|
|
| 1665 |
|
|
(*count) ++;
|
| 1666 |
|
|
return TRUE;
|
| 1667 |
|
|
}
|
| 1668 |
|
|
|
| 1669 |
|
|
/* Used to enumerate hash table entries into a linear array. */
|
| 1670 |
|
|
|
| 1671 |
|
|
static bfd_boolean
|
| 1672 |
|
|
elf32_mn10300_list_hash_table_entries (struct bfd_hash_entry *gen_entry,
|
| 1673 |
|
|
void * in_args)
|
| 1674 |
|
|
{
|
| 1675 |
|
|
struct bfd_hash_entry ***ptr = (struct bfd_hash_entry ***) in_args;
|
| 1676 |
|
|
|
| 1677 |
|
|
**ptr = gen_entry;
|
| 1678 |
|
|
(*ptr) ++;
|
| 1679 |
|
|
return TRUE;
|
| 1680 |
|
|
}
|
| 1681 |
|
|
|
| 1682 |
|
|
/* Used to sort the array created by the above. */
|
| 1683 |
|
|
|
| 1684 |
|
|
static int
|
| 1685 |
|
|
sort_by_value (const void *va, const void *vb)
|
| 1686 |
|
|
{
|
| 1687 |
|
|
struct elf32_mn10300_link_hash_entry *a
|
| 1688 |
|
|
= *(struct elf32_mn10300_link_hash_entry **) va;
|
| 1689 |
|
|
struct elf32_mn10300_link_hash_entry *b
|
| 1690 |
|
|
= *(struct elf32_mn10300_link_hash_entry **) vb;
|
| 1691 |
|
|
|
| 1692 |
|
|
return a->value - b->value;
|
| 1693 |
|
|
}
|
| 1694 |
|
|
|
| 1695 |
|
|
/* Compute the stack size and movm arguments for the function
|
| 1696 |
|
|
referred to by HASH at address ADDR in section with
|
| 1697 |
|
|
contents CONTENTS, store the information in the hash table. */
|
| 1698 |
|
|
|
| 1699 |
|
|
static void
|
| 1700 |
|
|
compute_function_info (bfd *abfd,
|
| 1701 |
|
|
struct elf32_mn10300_link_hash_entry *hash,
|
| 1702 |
|
|
bfd_vma addr,
|
| 1703 |
|
|
unsigned char *contents)
|
| 1704 |
|
|
{
|
| 1705 |
|
|
unsigned char byte1, byte2;
|
| 1706 |
|
|
/* We only care about a very small subset of the possible prologue
|
| 1707 |
|
|
sequences here. Basically we look for:
|
| 1708 |
|
|
|
| 1709 |
|
|
movm [d2,d3,a2,a3],sp (optional)
|
| 1710 |
|
|
add <size>,sp (optional, and only for sizes which fit in an unsigned
|
| 1711 |
|
|
8 bit number)
|
| 1712 |
|
|
|
| 1713 |
|
|
If we find anything else, we quit. */
|
| 1714 |
|
|
|
| 1715 |
|
|
/* Look for movm [regs],sp. */
|
| 1716 |
|
|
byte1 = bfd_get_8 (abfd, contents + addr);
|
| 1717 |
|
|
byte2 = bfd_get_8 (abfd, contents + addr + 1);
|
| 1718 |
|
|
|
| 1719 |
|
|
if (byte1 == 0xcf)
|
| 1720 |
|
|
{
|
| 1721 |
|
|
hash->movm_args = byte2;
|
| 1722 |
|
|
addr += 2;
|
| 1723 |
|
|
byte1 = bfd_get_8 (abfd, contents + addr);
|
| 1724 |
|
|
byte2 = bfd_get_8 (abfd, contents + addr + 1);
|
| 1725 |
|
|
}
|
| 1726 |
|
|
|
| 1727 |
|
|
/* Now figure out how much stack space will be allocated by the movm
|
| 1728 |
|
|
instruction. We need this kept separate from the function's normal
|
| 1729 |
|
|
stack space. */
|
| 1730 |
|
|
if (hash->movm_args)
|
| 1731 |
|
|
{
|
| 1732 |
|
|
/* Space for d2. */
|
| 1733 |
|
|
if (hash->movm_args & 0x80)
|
| 1734 |
|
|
hash->movm_stack_size += 4;
|
| 1735 |
|
|
|
| 1736 |
|
|
/* Space for d3. */
|
| 1737 |
|
|
if (hash->movm_args & 0x40)
|
| 1738 |
|
|
hash->movm_stack_size += 4;
|
| 1739 |
|
|
|
| 1740 |
|
|
/* Space for a2. */
|
| 1741 |
|
|
if (hash->movm_args & 0x20)
|
| 1742 |
|
|
hash->movm_stack_size += 4;
|
| 1743 |
|
|
|
| 1744 |
|
|
/* Space for a3. */
|
| 1745 |
|
|
if (hash->movm_args & 0x10)
|
| 1746 |
|
|
hash->movm_stack_size += 4;
|
| 1747 |
|
|
|
| 1748 |
|
|
/* "other" space. d0, d1, a0, a1, mdr, lir, lar, 4 byte pad. */
|
| 1749 |
|
|
if (hash->movm_args & 0x08)
|
| 1750 |
|
|
hash->movm_stack_size += 8 * 4;
|
| 1751 |
|
|
|
| 1752 |
|
|
if (bfd_get_mach (abfd) == bfd_mach_am33
|
| 1753 |
|
|
|| bfd_get_mach (abfd) == bfd_mach_am33_2)
|
| 1754 |
|
|
{
|
| 1755 |
|
|
/* "exother" space. e0, e1, mdrq, mcrh, mcrl, mcvf */
|
| 1756 |
|
|
if (hash->movm_args & 0x1)
|
| 1757 |
|
|
hash->movm_stack_size += 6 * 4;
|
| 1758 |
|
|
|
| 1759 |
|
|
/* exreg1 space. e4, e5, e6, e7 */
|
| 1760 |
|
|
if (hash->movm_args & 0x2)
|
| 1761 |
|
|
hash->movm_stack_size += 4 * 4;
|
| 1762 |
|
|
|
| 1763 |
|
|
/* exreg0 space. e2, e3 */
|
| 1764 |
|
|
if (hash->movm_args & 0x4)
|
| 1765 |
|
|
hash->movm_stack_size += 2 * 4;
|
| 1766 |
|
|
}
|
| 1767 |
|
|
}
|
| 1768 |
|
|
|
| 1769 |
|
|
/* Now look for the two stack adjustment variants. */
|
| 1770 |
|
|
if (byte1 == 0xf8 && byte2 == 0xfe)
|
| 1771 |
|
|
{
|
| 1772 |
|
|
int temp = bfd_get_8 (abfd, contents + addr + 2);
|
| 1773 |
|
|
temp = ((temp & 0xff) ^ (~0x7f)) + 0x80;
|
| 1774 |
|
|
|
| 1775 |
|
|
hash->stack_size = -temp;
|
| 1776 |
|
|
}
|
| 1777 |
|
|
else if (byte1 == 0xfa && byte2 == 0xfe)
|
| 1778 |
|
|
{
|
| 1779 |
|
|
int temp = bfd_get_16 (abfd, contents + addr + 2);
|
| 1780 |
|
|
temp = ((temp & 0xffff) ^ (~0x7fff)) + 0x8000;
|
| 1781 |
|
|
temp = -temp;
|
| 1782 |
|
|
|
| 1783 |
|
|
if (temp < 255)
|
| 1784 |
|
|
hash->stack_size = temp;
|
| 1785 |
|
|
}
|
| 1786 |
|
|
|
| 1787 |
|
|
/* If the total stack to be allocated by the call instruction is more
|
| 1788 |
|
|
than 255 bytes, then we can't remove the stack adjustment by using
|
| 1789 |
|
|
"call" (we might still be able to remove the "movm" instruction. */
|
| 1790 |
|
|
if (hash->stack_size + hash->movm_stack_size > 255)
|
| 1791 |
|
|
hash->stack_size = 0;
|
| 1792 |
|
|
}
|
| 1793 |
|
|
|
| 1794 |
|
|
/* Delete some bytes from a section while relaxing. */
|
| 1795 |
|
|
|
| 1796 |
|
|
static bfd_boolean
|
| 1797 |
|
|
mn10300_elf_relax_delete_bytes (bfd *abfd,
|
| 1798 |
|
|
asection *sec,
|
| 1799 |
|
|
bfd_vma addr,
|
| 1800 |
|
|
int count)
|
| 1801 |
|
|
{
|
| 1802 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 1803 |
|
|
unsigned int sec_shndx;
|
| 1804 |
|
|
bfd_byte *contents;
|
| 1805 |
|
|
Elf_Internal_Rela *irel, *irelend;
|
| 1806 |
|
|
Elf_Internal_Rela *irelalign;
|
| 1807 |
|
|
bfd_vma toaddr;
|
| 1808 |
|
|
Elf_Internal_Sym *isym, *isymend;
|
| 1809 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 1810 |
|
|
struct elf_link_hash_entry **end_hashes;
|
| 1811 |
|
|
unsigned int symcount;
|
| 1812 |
|
|
|
| 1813 |
|
|
sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
|
| 1814 |
|
|
|
| 1815 |
|
|
contents = elf_section_data (sec)->this_hdr.contents;
|
| 1816 |
|
|
|
| 1817 |
|
|
irelalign = NULL;
|
| 1818 |
|
|
toaddr = sec->size;
|
| 1819 |
|
|
|
| 1820 |
|
|
irel = elf_section_data (sec)->relocs;
|
| 1821 |
|
|
irelend = irel + sec->reloc_count;
|
| 1822 |
|
|
|
| 1823 |
|
|
if (sec->reloc_count > 0)
|
| 1824 |
|
|
{
|
| 1825 |
|
|
/* If there is an align reloc at the end of the section ignore it.
|
| 1826 |
|
|
GAS creates these relocs for reasons of its own, and they just
|
| 1827 |
|
|
serve to keep the section artifically inflated. */
|
| 1828 |
|
|
if (ELF32_R_TYPE ((irelend - 1)->r_info) == (int) R_MN10300_ALIGN)
|
| 1829 |
|
|
--irelend;
|
| 1830 |
|
|
|
| 1831 |
|
|
/* The deletion must stop at the next ALIGN reloc for an aligment
|
| 1832 |
|
|
power larger than, or not a multiple of, the number of bytes we
|
| 1833 |
|
|
are deleting. */
|
| 1834 |
|
|
for (; irel < irelend; irel++)
|
| 1835 |
|
|
{
|
| 1836 |
|
|
int alignment = 1 << irel->r_addend;
|
| 1837 |
|
|
|
| 1838 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN
|
| 1839 |
|
|
&& irel->r_offset > addr
|
| 1840 |
|
|
&& irel->r_offset < toaddr
|
| 1841 |
|
|
&& (count < alignment
|
| 1842 |
|
|
|| alignment % count != 0))
|
| 1843 |
|
|
{
|
| 1844 |
|
|
irelalign = irel;
|
| 1845 |
|
|
toaddr = irel->r_offset;
|
| 1846 |
|
|
break;
|
| 1847 |
|
|
}
|
| 1848 |
|
|
}
|
| 1849 |
|
|
}
|
| 1850 |
|
|
|
| 1851 |
|
|
/* Actually delete the bytes. */
|
| 1852 |
|
|
memmove (contents + addr, contents + addr + count,
|
| 1853 |
|
|
(size_t) (toaddr - addr - count));
|
| 1854 |
|
|
|
| 1855 |
|
|
/* Adjust the section's size if we are shrinking it, or else
|
| 1856 |
|
|
pad the bytes between the end of the shrunken region and
|
| 1857 |
|
|
the start of the next region with NOP codes. */
|
| 1858 |
|
|
if (irelalign == NULL)
|
| 1859 |
|
|
{
|
| 1860 |
|
|
sec->size -= count;
|
| 1861 |
|
|
/* Include symbols at the end of the section, but
|
| 1862 |
|
|
not at the end of a sub-region of the section. */
|
| 1863 |
|
|
toaddr ++;
|
| 1864 |
|
|
}
|
| 1865 |
|
|
else
|
| 1866 |
|
|
{
|
| 1867 |
|
|
int i;
|
| 1868 |
|
|
|
| 1869 |
|
|
#define NOP_OPCODE 0xcb
|
| 1870 |
|
|
|
| 1871 |
|
|
for (i = 0; i < count; i ++)
|
| 1872 |
|
|
bfd_put_8 (abfd, (bfd_vma) NOP_OPCODE, contents + toaddr - count + i);
|
| 1873 |
|
|
}
|
| 1874 |
|
|
|
| 1875 |
|
|
/* Adjust all the relocs. */
|
| 1876 |
|
|
for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
|
| 1877 |
|
|
{
|
| 1878 |
|
|
/* Get the new reloc address. */
|
| 1879 |
|
|
if ((irel->r_offset > addr
|
| 1880 |
|
|
&& irel->r_offset < toaddr)
|
| 1881 |
|
|
|| (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN
|
| 1882 |
|
|
&& irel->r_offset == toaddr))
|
| 1883 |
|
|
irel->r_offset -= count;
|
| 1884 |
|
|
}
|
| 1885 |
|
|
|
| 1886 |
|
|
/* Adjust the local symbols in the section, reducing their value
|
| 1887 |
|
|
by the number of bytes deleted. Note - symbols within the deleted
|
| 1888 |
|
|
region are moved to the address of the start of the region, which
|
| 1889 |
|
|
actually means that they will address the byte beyond the end of
|
| 1890 |
|
|
the region once the deletion has been completed. */
|
| 1891 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
| 1892 |
|
|
isym = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 1893 |
|
|
for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
|
| 1894 |
|
|
{
|
| 1895 |
|
|
if (isym->st_shndx == sec_shndx
|
| 1896 |
|
|
&& isym->st_value > addr
|
| 1897 |
|
|
&& isym->st_value < toaddr)
|
| 1898 |
|
|
{
|
| 1899 |
|
|
if (isym->st_value < addr + count)
|
| 1900 |
|
|
isym->st_value = addr;
|
| 1901 |
|
|
else
|
| 1902 |
|
|
isym->st_value -= count;
|
| 1903 |
|
|
}
|
| 1904 |
|
|
/* Adjust the function symbol's size as well. */
|
| 1905 |
|
|
else if (isym->st_shndx == sec_shndx
|
| 1906 |
|
|
&& ELF_ST_TYPE (isym->st_info) == STT_FUNC
|
| 1907 |
|
|
&& isym->st_value + isym->st_size > addr
|
| 1908 |
|
|
&& isym->st_value + isym->st_size < toaddr)
|
| 1909 |
|
|
isym->st_size -= count;
|
| 1910 |
|
|
}
|
| 1911 |
|
|
|
| 1912 |
|
|
/* Now adjust the global symbols defined in this section. */
|
| 1913 |
|
|
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
| 1914 |
|
|
- symtab_hdr->sh_info);
|
| 1915 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 1916 |
|
|
end_hashes = sym_hashes + symcount;
|
| 1917 |
|
|
for (; sym_hashes < end_hashes; sym_hashes++)
|
| 1918 |
|
|
{
|
| 1919 |
|
|
struct elf_link_hash_entry *sym_hash = *sym_hashes;
|
| 1920 |
|
|
|
| 1921 |
|
|
if ((sym_hash->root.type == bfd_link_hash_defined
|
| 1922 |
|
|
|| sym_hash->root.type == bfd_link_hash_defweak)
|
| 1923 |
|
|
&& sym_hash->root.u.def.section == sec
|
| 1924 |
|
|
&& sym_hash->root.u.def.value > addr
|
| 1925 |
|
|
&& sym_hash->root.u.def.value < toaddr)
|
| 1926 |
|
|
{
|
| 1927 |
|
|
if (sym_hash->root.u.def.value < addr + count)
|
| 1928 |
|
|
sym_hash->root.u.def.value = addr;
|
| 1929 |
|
|
else
|
| 1930 |
|
|
sym_hash->root.u.def.value -= count;
|
| 1931 |
|
|
}
|
| 1932 |
|
|
/* Adjust the function symbol's size as well. */
|
| 1933 |
|
|
else if (sym_hash->root.type == bfd_link_hash_defined
|
| 1934 |
|
|
&& sym_hash->root.u.def.section == sec
|
| 1935 |
|
|
&& sym_hash->type == STT_FUNC
|
| 1936 |
|
|
&& sym_hash->root.u.def.value + sym_hash->size > addr
|
| 1937 |
|
|
&& sym_hash->root.u.def.value + sym_hash->size < toaddr)
|
| 1938 |
|
|
sym_hash->size -= count;
|
| 1939 |
|
|
}
|
| 1940 |
|
|
|
| 1941 |
|
|
/* See if we can move the ALIGN reloc forward.
|
| 1942 |
|
|
We have adjusted r_offset for it already. */
|
| 1943 |
|
|
if (irelalign != NULL)
|
| 1944 |
|
|
{
|
| 1945 |
|
|
bfd_vma alignto, alignaddr;
|
| 1946 |
|
|
|
| 1947 |
|
|
if ((int) irelalign->r_addend > 0)
|
| 1948 |
|
|
{
|
| 1949 |
|
|
/* This is the old address. */
|
| 1950 |
|
|
alignto = BFD_ALIGN (toaddr, 1 << irelalign->r_addend);
|
| 1951 |
|
|
/* This is where the align points to now. */
|
| 1952 |
|
|
alignaddr = BFD_ALIGN (irelalign->r_offset,
|
| 1953 |
|
|
1 << irelalign->r_addend);
|
| 1954 |
|
|
if (alignaddr < alignto)
|
| 1955 |
|
|
/* Tail recursion. */
|
| 1956 |
|
|
return mn10300_elf_relax_delete_bytes (abfd, sec, alignaddr,
|
| 1957 |
|
|
(int) (alignto - alignaddr));
|
| 1958 |
|
|
}
|
| 1959 |
|
|
}
|
| 1960 |
|
|
|
| 1961 |
|
|
return TRUE;
|
| 1962 |
|
|
}
|
| 1963 |
|
|
|
| 1964 |
|
|
/* Return TRUE if a symbol exists at the given address, else return
|
| 1965 |
|
|
FALSE. */
|
| 1966 |
|
|
|
| 1967 |
|
|
static bfd_boolean
|
| 1968 |
|
|
mn10300_elf_symbol_address_p (bfd *abfd,
|
| 1969 |
|
|
asection *sec,
|
| 1970 |
|
|
Elf_Internal_Sym *isym,
|
| 1971 |
|
|
bfd_vma addr)
|
| 1972 |
|
|
{
|
| 1973 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 1974 |
|
|
unsigned int sec_shndx;
|
| 1975 |
|
|
Elf_Internal_Sym *isymend;
|
| 1976 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 1977 |
|
|
struct elf_link_hash_entry **end_hashes;
|
| 1978 |
|
|
unsigned int symcount;
|
| 1979 |
|
|
|
| 1980 |
|
|
sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
|
| 1981 |
|
|
|
| 1982 |
|
|
/* Examine all the symbols. */
|
| 1983 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
| 1984 |
|
|
for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
|
| 1985 |
|
|
if (isym->st_shndx == sec_shndx
|
| 1986 |
|
|
&& isym->st_value == addr)
|
| 1987 |
|
|
return TRUE;
|
| 1988 |
|
|
|
| 1989 |
|
|
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
| 1990 |
|
|
- symtab_hdr->sh_info);
|
| 1991 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 1992 |
|
|
end_hashes = sym_hashes + symcount;
|
| 1993 |
|
|
for (; sym_hashes < end_hashes; sym_hashes++)
|
| 1994 |
|
|
{
|
| 1995 |
|
|
struct elf_link_hash_entry *sym_hash = *sym_hashes;
|
| 1996 |
|
|
|
| 1997 |
|
|
if ((sym_hash->root.type == bfd_link_hash_defined
|
| 1998 |
|
|
|| sym_hash->root.type == bfd_link_hash_defweak)
|
| 1999 |
|
|
&& sym_hash->root.u.def.section == sec
|
| 2000 |
|
|
&& sym_hash->root.u.def.value == addr)
|
| 2001 |
|
|
return TRUE;
|
| 2002 |
|
|
}
|
| 2003 |
|
|
|
| 2004 |
|
|
return FALSE;
|
| 2005 |
|
|
}
|
| 2006 |
|
|
|
| 2007 |
|
|
/* This function handles relaxing for the mn10300.
|
| 2008 |
|
|
|
| 2009 |
|
|
There are quite a few relaxing opportunities available on the mn10300:
|
| 2010 |
|
|
|
| 2011 |
|
|
* calls:32 -> calls:16 2 bytes
|
| 2012 |
|
|
* call:32 -> call:16 2 bytes
|
| 2013 |
|
|
|
| 2014 |
|
|
* call:32 -> calls:32 1 byte
|
| 2015 |
|
|
* call:16 -> calls:16 1 byte
|
| 2016 |
|
|
* These are done anytime using "calls" would result
|
| 2017 |
|
|
in smaller code, or when necessary to preserve the
|
| 2018 |
|
|
meaning of the program.
|
| 2019 |
|
|
|
| 2020 |
|
|
* call:32 varies
|
| 2021 |
|
|
* call:16
|
| 2022 |
|
|
* In some circumstances we can move instructions
|
| 2023 |
|
|
from a function prologue into a "call" instruction.
|
| 2024 |
|
|
This is only done if the resulting code is no larger
|
| 2025 |
|
|
than the original code.
|
| 2026 |
|
|
|
| 2027 |
|
|
* jmp:32 -> jmp:16 2 bytes
|
| 2028 |
|
|
* jmp:16 -> bra:8 1 byte
|
| 2029 |
|
|
|
| 2030 |
|
|
* If the previous instruction is a conditional branch
|
| 2031 |
|
|
around the jump/bra, we may be able to reverse its condition
|
| 2032 |
|
|
and change its target to the jump's target. The jump/bra
|
| 2033 |
|
|
can then be deleted. 2 bytes
|
| 2034 |
|
|
|
| 2035 |
|
|
* mov abs32 -> mov abs16 1 or 2 bytes
|
| 2036 |
|
|
|
| 2037 |
|
|
* Most instructions which accept imm32 can relax to imm16 1 or 2 bytes
|
| 2038 |
|
|
- Most instructions which accept imm16 can relax to imm8 1 or 2 bytes
|
| 2039 |
|
|
|
| 2040 |
|
|
* Most instructions which accept d32 can relax to d16 1 or 2 bytes
|
| 2041 |
|
|
- Most instructions which accept d16 can relax to d8 1 or 2 bytes
|
| 2042 |
|
|
|
| 2043 |
|
|
We don't handle imm16->imm8 or d16->d8 as they're very rare
|
| 2044 |
|
|
and somewhat more difficult to support. */
|
| 2045 |
|
|
|
| 2046 |
|
|
static bfd_boolean
|
| 2047 |
|
|
mn10300_elf_relax_section (bfd *abfd,
|
| 2048 |
|
|
asection *sec,
|
| 2049 |
|
|
struct bfd_link_info *link_info,
|
| 2050 |
|
|
bfd_boolean *again)
|
| 2051 |
|
|
{
|
| 2052 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 2053 |
|
|
Elf_Internal_Rela *internal_relocs = NULL;
|
| 2054 |
|
|
Elf_Internal_Rela *irel, *irelend;
|
| 2055 |
|
|
bfd_byte *contents = NULL;
|
| 2056 |
|
|
Elf_Internal_Sym *isymbuf = NULL;
|
| 2057 |
|
|
struct elf32_mn10300_link_hash_table *hash_table;
|
| 2058 |
|
|
asection *section = sec;
|
| 2059 |
|
|
bfd_vma align_gap_adjustment;
|
| 2060 |
|
|
|
| 2061 |
|
|
if (link_info->relocatable)
|
| 2062 |
|
|
(*link_info->callbacks->einfo)
|
| 2063 |
|
|
(_("%P%F: --relax and -r may not be used together\n"));
|
| 2064 |
|
|
|
| 2065 |
|
|
/* Assume nothing changes. */
|
| 2066 |
|
|
*again = FALSE;
|
| 2067 |
|
|
|
| 2068 |
|
|
/* We need a pointer to the mn10300 specific hash table. */
|
| 2069 |
|
|
hash_table = elf32_mn10300_hash_table (link_info);
|
| 2070 |
|
|
if (hash_table == NULL)
|
| 2071 |
|
|
return FALSE;
|
| 2072 |
|
|
|
| 2073 |
|
|
/* Initialize fields in each hash table entry the first time through. */
|
| 2074 |
|
|
if ((hash_table->flags & MN10300_HASH_ENTRIES_INITIALIZED) == 0)
|
| 2075 |
|
|
{
|
| 2076 |
|
|
bfd *input_bfd;
|
| 2077 |
|
|
|
| 2078 |
|
|
/* Iterate over all the input bfds. */
|
| 2079 |
|
|
for (input_bfd = link_info->input_bfds;
|
| 2080 |
|
|
input_bfd != NULL;
|
| 2081 |
|
|
input_bfd = input_bfd->link_next)
|
| 2082 |
|
|
{
|
| 2083 |
|
|
/* We're going to need all the symbols for each bfd. */
|
| 2084 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
| 2085 |
|
|
if (symtab_hdr->sh_info != 0)
|
| 2086 |
|
|
{
|
| 2087 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 2088 |
|
|
if (isymbuf == NULL)
|
| 2089 |
|
|
isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
|
| 2090 |
|
|
symtab_hdr->sh_info, 0,
|
| 2091 |
|
|
NULL, NULL, NULL);
|
| 2092 |
|
|
if (isymbuf == NULL)
|
| 2093 |
|
|
goto error_return;
|
| 2094 |
|
|
}
|
| 2095 |
|
|
|
| 2096 |
|
|
/* Iterate over each section in this bfd. */
|
| 2097 |
|
|
for (section = input_bfd->sections;
|
| 2098 |
|
|
section != NULL;
|
| 2099 |
|
|
section = section->next)
|
| 2100 |
|
|
{
|
| 2101 |
|
|
struct elf32_mn10300_link_hash_entry *hash;
|
| 2102 |
|
|
asection *sym_sec = NULL;
|
| 2103 |
|
|
const char *sym_name;
|
| 2104 |
|
|
char *new_name;
|
| 2105 |
|
|
|
| 2106 |
|
|
/* If there's nothing to do in this section, skip it. */
|
| 2107 |
|
|
if (! ((section->flags & SEC_RELOC) != 0
|
| 2108 |
|
|
&& section->reloc_count != 0))
|
| 2109 |
|
|
continue;
|
| 2110 |
|
|
if ((section->flags & SEC_ALLOC) == 0)
|
| 2111 |
|
|
continue;
|
| 2112 |
|
|
|
| 2113 |
|
|
/* Get cached copy of section contents if it exists. */
|
| 2114 |
|
|
if (elf_section_data (section)->this_hdr.contents != NULL)
|
| 2115 |
|
|
contents = elf_section_data (section)->this_hdr.contents;
|
| 2116 |
|
|
else if (section->size != 0)
|
| 2117 |
|
|
{
|
| 2118 |
|
|
/* Go get them off disk. */
|
| 2119 |
|
|
if (!bfd_malloc_and_get_section (input_bfd, section,
|
| 2120 |
|
|
&contents))
|
| 2121 |
|
|
goto error_return;
|
| 2122 |
|
|
}
|
| 2123 |
|
|
else
|
| 2124 |
|
|
contents = NULL;
|
| 2125 |
|
|
|
| 2126 |
|
|
/* If there aren't any relocs, then there's nothing to do. */
|
| 2127 |
|
|
if ((section->flags & SEC_RELOC) != 0
|
| 2128 |
|
|
&& section->reloc_count != 0)
|
| 2129 |
|
|
{
|
| 2130 |
|
|
/* Get a copy of the native relocations. */
|
| 2131 |
|
|
internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section,
|
| 2132 |
|
|
NULL, NULL,
|
| 2133 |
|
|
link_info->keep_memory);
|
| 2134 |
|
|
if (internal_relocs == NULL)
|
| 2135 |
|
|
goto error_return;
|
| 2136 |
|
|
|
| 2137 |
|
|
/* Now examine each relocation. */
|
| 2138 |
|
|
irel = internal_relocs;
|
| 2139 |
|
|
irelend = irel + section->reloc_count;
|
| 2140 |
|
|
for (; irel < irelend; irel++)
|
| 2141 |
|
|
{
|
| 2142 |
|
|
long r_type;
|
| 2143 |
|
|
unsigned long r_index;
|
| 2144 |
|
|
unsigned char code;
|
| 2145 |
|
|
|
| 2146 |
|
|
r_type = ELF32_R_TYPE (irel->r_info);
|
| 2147 |
|
|
r_index = ELF32_R_SYM (irel->r_info);
|
| 2148 |
|
|
|
| 2149 |
|
|
if (r_type < 0 || r_type >= (int) R_MN10300_MAX)
|
| 2150 |
|
|
goto error_return;
|
| 2151 |
|
|
|
| 2152 |
|
|
/* We need the name and hash table entry of the target
|
| 2153 |
|
|
symbol! */
|
| 2154 |
|
|
hash = NULL;
|
| 2155 |
|
|
sym_sec = NULL;
|
| 2156 |
|
|
|
| 2157 |
|
|
if (r_index < symtab_hdr->sh_info)
|
| 2158 |
|
|
{
|
| 2159 |
|
|
/* A local symbol. */
|
| 2160 |
|
|
Elf_Internal_Sym *isym;
|
| 2161 |
|
|
struct elf_link_hash_table *elftab;
|
| 2162 |
|
|
bfd_size_type amt;
|
| 2163 |
|
|
|
| 2164 |
|
|
isym = isymbuf + r_index;
|
| 2165 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
| 2166 |
|
|
sym_sec = bfd_und_section_ptr;
|
| 2167 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
| 2168 |
|
|
sym_sec = bfd_abs_section_ptr;
|
| 2169 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
| 2170 |
|
|
sym_sec = bfd_com_section_ptr;
|
| 2171 |
|
|
else
|
| 2172 |
|
|
sym_sec
|
| 2173 |
|
|
= bfd_section_from_elf_index (input_bfd,
|
| 2174 |
|
|
isym->st_shndx);
|
| 2175 |
|
|
|
| 2176 |
|
|
sym_name
|
| 2177 |
|
|
= bfd_elf_string_from_elf_section (input_bfd,
|
| 2178 |
|
|
(symtab_hdr
|
| 2179 |
|
|
->sh_link),
|
| 2180 |
|
|
isym->st_name);
|
| 2181 |
|
|
|
| 2182 |
|
|
/* If it isn't a function, then we don't care
|
| 2183 |
|
|
about it. */
|
| 2184 |
|
|
if (ELF_ST_TYPE (isym->st_info) != STT_FUNC)
|
| 2185 |
|
|
continue;
|
| 2186 |
|
|
|
| 2187 |
|
|
/* Tack on an ID so we can uniquely identify this
|
| 2188 |
|
|
local symbol in the global hash table. */
|
| 2189 |
|
|
amt = strlen (sym_name) + 10;
|
| 2190 |
|
|
new_name = bfd_malloc (amt);
|
| 2191 |
|
|
if (new_name == NULL)
|
| 2192 |
|
|
goto error_return;
|
| 2193 |
|
|
|
| 2194 |
|
|
sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
|
| 2195 |
|
|
sym_name = new_name;
|
| 2196 |
|
|
|
| 2197 |
|
|
elftab = &hash_table->static_hash_table->root;
|
| 2198 |
|
|
hash = ((struct elf32_mn10300_link_hash_entry *)
|
| 2199 |
|
|
elf_link_hash_lookup (elftab, sym_name,
|
| 2200 |
|
|
TRUE, TRUE, FALSE));
|
| 2201 |
|
|
free (new_name);
|
| 2202 |
|
|
}
|
| 2203 |
|
|
else
|
| 2204 |
|
|
{
|
| 2205 |
|
|
r_index -= symtab_hdr->sh_info;
|
| 2206 |
|
|
hash = (struct elf32_mn10300_link_hash_entry *)
|
| 2207 |
|
|
elf_sym_hashes (input_bfd)[r_index];
|
| 2208 |
|
|
}
|
| 2209 |
|
|
|
| 2210 |
|
|
sym_name = hash->root.root.root.string;
|
| 2211 |
|
|
if ((section->flags & SEC_CODE) != 0)
|
| 2212 |
|
|
{
|
| 2213 |
|
|
/* If this is not a "call" instruction, then we
|
| 2214 |
|
|
should convert "call" instructions to "calls"
|
| 2215 |
|
|
instructions. */
|
| 2216 |
|
|
code = bfd_get_8 (input_bfd,
|
| 2217 |
|
|
contents + irel->r_offset - 1);
|
| 2218 |
|
|
if (code != 0xdd && code != 0xcd)
|
| 2219 |
|
|
hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
|
| 2220 |
|
|
}
|
| 2221 |
|
|
|
| 2222 |
|
|
/* If this is a jump/call, then bump the
|
| 2223 |
|
|
direct_calls counter. Else force "call" to
|
| 2224 |
|
|
"calls" conversions. */
|
| 2225 |
|
|
if (r_type == R_MN10300_PCREL32
|
| 2226 |
|
|
|| r_type == R_MN10300_PLT32
|
| 2227 |
|
|
|| r_type == R_MN10300_PLT16
|
| 2228 |
|
|
|| r_type == R_MN10300_PCREL16)
|
| 2229 |
|
|
hash->direct_calls++;
|
| 2230 |
|
|
else
|
| 2231 |
|
|
hash->flags |= MN10300_CONVERT_CALL_TO_CALLS;
|
| 2232 |
|
|
}
|
| 2233 |
|
|
}
|
| 2234 |
|
|
|
| 2235 |
|
|
/* Now look at the actual contents to get the stack size,
|
| 2236 |
|
|
and a list of what registers were saved in the prologue
|
| 2237 |
|
|
(ie movm_args). */
|
| 2238 |
|
|
if ((section->flags & SEC_CODE) != 0)
|
| 2239 |
|
|
{
|
| 2240 |
|
|
Elf_Internal_Sym *isym, *isymend;
|
| 2241 |
|
|
unsigned int sec_shndx;
|
| 2242 |
|
|
struct elf_link_hash_entry **hashes;
|
| 2243 |
|
|
struct elf_link_hash_entry **end_hashes;
|
| 2244 |
|
|
unsigned int symcount;
|
| 2245 |
|
|
|
| 2246 |
|
|
sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
|
| 2247 |
|
|
section);
|
| 2248 |
|
|
|
| 2249 |
|
|
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
| 2250 |
|
|
- symtab_hdr->sh_info);
|
| 2251 |
|
|
hashes = elf_sym_hashes (input_bfd);
|
| 2252 |
|
|
end_hashes = hashes + symcount;
|
| 2253 |
|
|
|
| 2254 |
|
|
/* Look at each function defined in this section and
|
| 2255 |
|
|
update info for that function. */
|
| 2256 |
|
|
isymend = isymbuf + symtab_hdr->sh_info;
|
| 2257 |
|
|
for (isym = isymbuf; isym < isymend; isym++)
|
| 2258 |
|
|
{
|
| 2259 |
|
|
if (isym->st_shndx == sec_shndx
|
| 2260 |
|
|
&& ELF_ST_TYPE (isym->st_info) == STT_FUNC)
|
| 2261 |
|
|
{
|
| 2262 |
|
|
struct elf_link_hash_table *elftab;
|
| 2263 |
|
|
bfd_size_type amt;
|
| 2264 |
|
|
struct elf_link_hash_entry **lhashes = hashes;
|
| 2265 |
|
|
|
| 2266 |
|
|
/* Skip a local symbol if it aliases a
|
| 2267 |
|
|
global one. */
|
| 2268 |
|
|
for (; lhashes < end_hashes; lhashes++)
|
| 2269 |
|
|
{
|
| 2270 |
|
|
hash = (struct elf32_mn10300_link_hash_entry *) *lhashes;
|
| 2271 |
|
|
if ((hash->root.root.type == bfd_link_hash_defined
|
| 2272 |
|
|
|| hash->root.root.type == bfd_link_hash_defweak)
|
| 2273 |
|
|
&& hash->root.root.u.def.section == section
|
| 2274 |
|
|
&& hash->root.type == STT_FUNC
|
| 2275 |
|
|
&& hash->root.root.u.def.value == isym->st_value)
|
| 2276 |
|
|
break;
|
| 2277 |
|
|
}
|
| 2278 |
|
|
if (lhashes != end_hashes)
|
| 2279 |
|
|
continue;
|
| 2280 |
|
|
|
| 2281 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
| 2282 |
|
|
sym_sec = bfd_und_section_ptr;
|
| 2283 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
| 2284 |
|
|
sym_sec = bfd_abs_section_ptr;
|
| 2285 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
| 2286 |
|
|
sym_sec = bfd_com_section_ptr;
|
| 2287 |
|
|
else
|
| 2288 |
|
|
sym_sec
|
| 2289 |
|
|
= bfd_section_from_elf_index (input_bfd,
|
| 2290 |
|
|
isym->st_shndx);
|
| 2291 |
|
|
|
| 2292 |
|
|
sym_name = (bfd_elf_string_from_elf_section
|
| 2293 |
|
|
(input_bfd, symtab_hdr->sh_link,
|
| 2294 |
|
|
isym->st_name));
|
| 2295 |
|
|
|
| 2296 |
|
|
/* Tack on an ID so we can uniquely identify this
|
| 2297 |
|
|
local symbol in the global hash table. */
|
| 2298 |
|
|
amt = strlen (sym_name) + 10;
|
| 2299 |
|
|
new_name = bfd_malloc (amt);
|
| 2300 |
|
|
if (new_name == NULL)
|
| 2301 |
|
|
goto error_return;
|
| 2302 |
|
|
|
| 2303 |
|
|
sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
|
| 2304 |
|
|
sym_name = new_name;
|
| 2305 |
|
|
|
| 2306 |
|
|
elftab = &hash_table->static_hash_table->root;
|
| 2307 |
|
|
hash = ((struct elf32_mn10300_link_hash_entry *)
|
| 2308 |
|
|
elf_link_hash_lookup (elftab, sym_name,
|
| 2309 |
|
|
TRUE, TRUE, FALSE));
|
| 2310 |
|
|
free (new_name);
|
| 2311 |
|
|
compute_function_info (input_bfd, hash,
|
| 2312 |
|
|
isym->st_value, contents);
|
| 2313 |
|
|
hash->value = isym->st_value;
|
| 2314 |
|
|
}
|
| 2315 |
|
|
}
|
| 2316 |
|
|
|
| 2317 |
|
|
for (; hashes < end_hashes; hashes++)
|
| 2318 |
|
|
{
|
| 2319 |
|
|
hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
|
| 2320 |
|
|
if ((hash->root.root.type == bfd_link_hash_defined
|
| 2321 |
|
|
|| hash->root.root.type == bfd_link_hash_defweak)
|
| 2322 |
|
|
&& hash->root.root.u.def.section == section
|
| 2323 |
|
|
&& hash->root.type == STT_FUNC)
|
| 2324 |
|
|
compute_function_info (input_bfd, hash,
|
| 2325 |
|
|
(hash)->root.root.u.def.value,
|
| 2326 |
|
|
contents);
|
| 2327 |
|
|
}
|
| 2328 |
|
|
}
|
| 2329 |
|
|
|
| 2330 |
|
|
/* Cache or free any memory we allocated for the relocs. */
|
| 2331 |
|
|
if (internal_relocs != NULL
|
| 2332 |
|
|
&& elf_section_data (section)->relocs != internal_relocs)
|
| 2333 |
|
|
free (internal_relocs);
|
| 2334 |
|
|
internal_relocs = NULL;
|
| 2335 |
|
|
|
| 2336 |
|
|
/* Cache or free any memory we allocated for the contents. */
|
| 2337 |
|
|
if (contents != NULL
|
| 2338 |
|
|
&& elf_section_data (section)->this_hdr.contents != contents)
|
| 2339 |
|
|
{
|
| 2340 |
|
|
if (! link_info->keep_memory)
|
| 2341 |
|
|
free (contents);
|
| 2342 |
|
|
else
|
| 2343 |
|
|
{
|
| 2344 |
|
|
/* Cache the section contents for elf_link_input_bfd. */
|
| 2345 |
|
|
elf_section_data (section)->this_hdr.contents = contents;
|
| 2346 |
|
|
}
|
| 2347 |
|
|
}
|
| 2348 |
|
|
contents = NULL;
|
| 2349 |
|
|
}
|
| 2350 |
|
|
|
| 2351 |
|
|
/* Cache or free any memory we allocated for the symbols. */
|
| 2352 |
|
|
if (isymbuf != NULL
|
| 2353 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
| 2354 |
|
|
{
|
| 2355 |
|
|
if (! link_info->keep_memory)
|
| 2356 |
|
|
free (isymbuf);
|
| 2357 |
|
|
else
|
| 2358 |
|
|
{
|
| 2359 |
|
|
/* Cache the symbols for elf_link_input_bfd. */
|
| 2360 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 2361 |
|
|
}
|
| 2362 |
|
|
}
|
| 2363 |
|
|
isymbuf = NULL;
|
| 2364 |
|
|
}
|
| 2365 |
|
|
|
| 2366 |
|
|
/* Now iterate on each symbol in the hash table and perform
|
| 2367 |
|
|
the final initialization steps on each. */
|
| 2368 |
|
|
elf32_mn10300_link_hash_traverse (hash_table,
|
| 2369 |
|
|
elf32_mn10300_finish_hash_table_entry,
|
| 2370 |
|
|
link_info);
|
| 2371 |
|
|
elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
|
| 2372 |
|
|
elf32_mn10300_finish_hash_table_entry,
|
| 2373 |
|
|
link_info);
|
| 2374 |
|
|
|
| 2375 |
|
|
{
|
| 2376 |
|
|
/* This section of code collects all our local symbols, sorts
|
| 2377 |
|
|
them by value, and looks for multiple symbols referring to
|
| 2378 |
|
|
the same address. For those symbols, the flags are merged.
|
| 2379 |
|
|
At this point, the only flag that can be set is
|
| 2380 |
|
|
MN10300_CONVERT_CALL_TO_CALLS, so we simply OR the flags
|
| 2381 |
|
|
together. */
|
| 2382 |
|
|
int static_count = 0, i;
|
| 2383 |
|
|
struct elf32_mn10300_link_hash_entry **entries;
|
| 2384 |
|
|
struct elf32_mn10300_link_hash_entry **ptr;
|
| 2385 |
|
|
|
| 2386 |
|
|
elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
|
| 2387 |
|
|
elf32_mn10300_count_hash_table_entries,
|
| 2388 |
|
|
&static_count);
|
| 2389 |
|
|
|
| 2390 |
|
|
entries = bfd_malloc (static_count * sizeof (* ptr));
|
| 2391 |
|
|
|
| 2392 |
|
|
ptr = entries;
|
| 2393 |
|
|
elf32_mn10300_link_hash_traverse (hash_table->static_hash_table,
|
| 2394 |
|
|
elf32_mn10300_list_hash_table_entries,
|
| 2395 |
|
|
& ptr);
|
| 2396 |
|
|
|
| 2397 |
|
|
qsort (entries, static_count, sizeof (entries[0]), sort_by_value);
|
| 2398 |
|
|
|
| 2399 |
|
|
for (i = 0; i < static_count - 1; i++)
|
| 2400 |
|
|
if (entries[i]->value && entries[i]->value == entries[i+1]->value)
|
| 2401 |
|
|
{
|
| 2402 |
|
|
int v = entries[i]->flags;
|
| 2403 |
|
|
int j;
|
| 2404 |
|
|
|
| 2405 |
|
|
for (j = i + 1; j < static_count && entries[j]->value == entries[i]->value; j++)
|
| 2406 |
|
|
v |= entries[j]->flags;
|
| 2407 |
|
|
|
| 2408 |
|
|
for (j = i; j < static_count && entries[j]->value == entries[i]->value; j++)
|
| 2409 |
|
|
entries[j]->flags = v;
|
| 2410 |
|
|
|
| 2411 |
|
|
i = j - 1;
|
| 2412 |
|
|
}
|
| 2413 |
|
|
}
|
| 2414 |
|
|
|
| 2415 |
|
|
/* All entries in the hash table are fully initialized. */
|
| 2416 |
|
|
hash_table->flags |= MN10300_HASH_ENTRIES_INITIALIZED;
|
| 2417 |
|
|
|
| 2418 |
|
|
/* Now that everything has been initialized, go through each
|
| 2419 |
|
|
code section and delete any prologue insns which will be
|
| 2420 |
|
|
redundant because their operations will be performed by
|
| 2421 |
|
|
a "call" instruction. */
|
| 2422 |
|
|
for (input_bfd = link_info->input_bfds;
|
| 2423 |
|
|
input_bfd != NULL;
|
| 2424 |
|
|
input_bfd = input_bfd->link_next)
|
| 2425 |
|
|
{
|
| 2426 |
|
|
/* We're going to need all the local symbols for each bfd. */
|
| 2427 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
| 2428 |
|
|
if (symtab_hdr->sh_info != 0)
|
| 2429 |
|
|
{
|
| 2430 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 2431 |
|
|
if (isymbuf == NULL)
|
| 2432 |
|
|
isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
|
| 2433 |
|
|
symtab_hdr->sh_info, 0,
|
| 2434 |
|
|
NULL, NULL, NULL);
|
| 2435 |
|
|
if (isymbuf == NULL)
|
| 2436 |
|
|
goto error_return;
|
| 2437 |
|
|
}
|
| 2438 |
|
|
|
| 2439 |
|
|
/* Walk over each section in this bfd. */
|
| 2440 |
|
|
for (section = input_bfd->sections;
|
| 2441 |
|
|
section != NULL;
|
| 2442 |
|
|
section = section->next)
|
| 2443 |
|
|
{
|
| 2444 |
|
|
unsigned int sec_shndx;
|
| 2445 |
|
|
Elf_Internal_Sym *isym, *isymend;
|
| 2446 |
|
|
struct elf_link_hash_entry **hashes;
|
| 2447 |
|
|
struct elf_link_hash_entry **end_hashes;
|
| 2448 |
|
|
unsigned int symcount;
|
| 2449 |
|
|
|
| 2450 |
|
|
/* Skip non-code sections and empty sections. */
|
| 2451 |
|
|
if ((section->flags & SEC_CODE) == 0 || section->size == 0)
|
| 2452 |
|
|
continue;
|
| 2453 |
|
|
|
| 2454 |
|
|
if (section->reloc_count != 0)
|
| 2455 |
|
|
{
|
| 2456 |
|
|
/* Get a copy of the native relocations. */
|
| 2457 |
|
|
internal_relocs = _bfd_elf_link_read_relocs (input_bfd, section,
|
| 2458 |
|
|
NULL, NULL,
|
| 2459 |
|
|
link_info->keep_memory);
|
| 2460 |
|
|
if (internal_relocs == NULL)
|
| 2461 |
|
|
goto error_return;
|
| 2462 |
|
|
}
|
| 2463 |
|
|
|
| 2464 |
|
|
/* Get cached copy of section contents if it exists. */
|
| 2465 |
|
|
if (elf_section_data (section)->this_hdr.contents != NULL)
|
| 2466 |
|
|
contents = elf_section_data (section)->this_hdr.contents;
|
| 2467 |
|
|
else
|
| 2468 |
|
|
{
|
| 2469 |
|
|
/* Go get them off disk. */
|
| 2470 |
|
|
if (!bfd_malloc_and_get_section (input_bfd, section,
|
| 2471 |
|
|
&contents))
|
| 2472 |
|
|
goto error_return;
|
| 2473 |
|
|
}
|
| 2474 |
|
|
|
| 2475 |
|
|
sec_shndx = _bfd_elf_section_from_bfd_section (input_bfd,
|
| 2476 |
|
|
section);
|
| 2477 |
|
|
|
| 2478 |
|
|
/* Now look for any function in this section which needs
|
| 2479 |
|
|
insns deleted from its prologue. */
|
| 2480 |
|
|
isymend = isymbuf + symtab_hdr->sh_info;
|
| 2481 |
|
|
for (isym = isymbuf; isym < isymend; isym++)
|
| 2482 |
|
|
{
|
| 2483 |
|
|
struct elf32_mn10300_link_hash_entry *sym_hash;
|
| 2484 |
|
|
asection *sym_sec = NULL;
|
| 2485 |
|
|
const char *sym_name;
|
| 2486 |
|
|
char *new_name;
|
| 2487 |
|
|
struct elf_link_hash_table *elftab;
|
| 2488 |
|
|
bfd_size_type amt;
|
| 2489 |
|
|
|
| 2490 |
|
|
if (isym->st_shndx != sec_shndx)
|
| 2491 |
|
|
continue;
|
| 2492 |
|
|
|
| 2493 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
| 2494 |
|
|
sym_sec = bfd_und_section_ptr;
|
| 2495 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
| 2496 |
|
|
sym_sec = bfd_abs_section_ptr;
|
| 2497 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
| 2498 |
|
|
sym_sec = bfd_com_section_ptr;
|
| 2499 |
|
|
else
|
| 2500 |
|
|
sym_sec
|
| 2501 |
|
|
= bfd_section_from_elf_index (input_bfd, isym->st_shndx);
|
| 2502 |
|
|
|
| 2503 |
|
|
sym_name
|
| 2504 |
|
|
= bfd_elf_string_from_elf_section (input_bfd,
|
| 2505 |
|
|
symtab_hdr->sh_link,
|
| 2506 |
|
|
isym->st_name);
|
| 2507 |
|
|
|
| 2508 |
|
|
/* Tack on an ID so we can uniquely identify this
|
| 2509 |
|
|
local symbol in the global hash table. */
|
| 2510 |
|
|
amt = strlen (sym_name) + 10;
|
| 2511 |
|
|
new_name = bfd_malloc (amt);
|
| 2512 |
|
|
if (new_name == NULL)
|
| 2513 |
|
|
goto error_return;
|
| 2514 |
|
|
sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
|
| 2515 |
|
|
sym_name = new_name;
|
| 2516 |
|
|
|
| 2517 |
|
|
elftab = & hash_table->static_hash_table->root;
|
| 2518 |
|
|
sym_hash = (struct elf32_mn10300_link_hash_entry *)
|
| 2519 |
|
|
elf_link_hash_lookup (elftab, sym_name,
|
| 2520 |
|
|
FALSE, FALSE, FALSE);
|
| 2521 |
|
|
|
| 2522 |
|
|
free (new_name);
|
| 2523 |
|
|
if (sym_hash == NULL)
|
| 2524 |
|
|
continue;
|
| 2525 |
|
|
|
| 2526 |
|
|
if (! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
|
| 2527 |
|
|
&& ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
|
| 2528 |
|
|
{
|
| 2529 |
|
|
int bytes = 0;
|
| 2530 |
|
|
|
| 2531 |
|
|
/* Note that we've changed things. */
|
| 2532 |
|
|
elf_section_data (section)->relocs = internal_relocs;
|
| 2533 |
|
|
elf_section_data (section)->this_hdr.contents = contents;
|
| 2534 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 2535 |
|
|
|
| 2536 |
|
|
/* Count how many bytes we're going to delete. */
|
| 2537 |
|
|
if (sym_hash->movm_args)
|
| 2538 |
|
|
bytes += 2;
|
| 2539 |
|
|
|
| 2540 |
|
|
if (sym_hash->stack_size > 0)
|
| 2541 |
|
|
{
|
| 2542 |
|
|
if (sym_hash->stack_size <= 128)
|
| 2543 |
|
|
bytes += 3;
|
| 2544 |
|
|
else
|
| 2545 |
|
|
bytes += 4;
|
| 2546 |
|
|
}
|
| 2547 |
|
|
|
| 2548 |
|
|
/* Note that we've deleted prologue bytes for this
|
| 2549 |
|
|
function. */
|
| 2550 |
|
|
sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
|
| 2551 |
|
|
|
| 2552 |
|
|
/* Actually delete the bytes. */
|
| 2553 |
|
|
if (!mn10300_elf_relax_delete_bytes (input_bfd,
|
| 2554 |
|
|
section,
|
| 2555 |
|
|
isym->st_value,
|
| 2556 |
|
|
bytes))
|
| 2557 |
|
|
goto error_return;
|
| 2558 |
|
|
|
| 2559 |
|
|
/* Something changed. Not strictly necessary, but
|
| 2560 |
|
|
may lead to more relaxing opportunities. */
|
| 2561 |
|
|
*again = TRUE;
|
| 2562 |
|
|
}
|
| 2563 |
|
|
}
|
| 2564 |
|
|
|
| 2565 |
|
|
/* Look for any global functions in this section which
|
| 2566 |
|
|
need insns deleted from their prologues. */
|
| 2567 |
|
|
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
| 2568 |
|
|
- symtab_hdr->sh_info);
|
| 2569 |
|
|
hashes = elf_sym_hashes (input_bfd);
|
| 2570 |
|
|
end_hashes = hashes + symcount;
|
| 2571 |
|
|
for (; hashes < end_hashes; hashes++)
|
| 2572 |
|
|
{
|
| 2573 |
|
|
struct elf32_mn10300_link_hash_entry *sym_hash;
|
| 2574 |
|
|
|
| 2575 |
|
|
sym_hash = (struct elf32_mn10300_link_hash_entry *) *hashes;
|
| 2576 |
|
|
if ((sym_hash->root.root.type == bfd_link_hash_defined
|
| 2577 |
|
|
|| sym_hash->root.root.type == bfd_link_hash_defweak)
|
| 2578 |
|
|
&& sym_hash->root.root.u.def.section == section
|
| 2579 |
|
|
&& ! (sym_hash->flags & MN10300_CONVERT_CALL_TO_CALLS)
|
| 2580 |
|
|
&& ! (sym_hash->flags & MN10300_DELETED_PROLOGUE_BYTES))
|
| 2581 |
|
|
{
|
| 2582 |
|
|
int bytes = 0;
|
| 2583 |
|
|
bfd_vma symval;
|
| 2584 |
|
|
|
| 2585 |
|
|
/* Note that we've changed things. */
|
| 2586 |
|
|
elf_section_data (section)->relocs = internal_relocs;
|
| 2587 |
|
|
elf_section_data (section)->this_hdr.contents = contents;
|
| 2588 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 2589 |
|
|
|
| 2590 |
|
|
/* Count how many bytes we're going to delete. */
|
| 2591 |
|
|
if (sym_hash->movm_args)
|
| 2592 |
|
|
bytes += 2;
|
| 2593 |
|
|
|
| 2594 |
|
|
if (sym_hash->stack_size > 0)
|
| 2595 |
|
|
{
|
| 2596 |
|
|
if (sym_hash->stack_size <= 128)
|
| 2597 |
|
|
bytes += 3;
|
| 2598 |
|
|
else
|
| 2599 |
|
|
bytes += 4;
|
| 2600 |
|
|
}
|
| 2601 |
|
|
|
| 2602 |
|
|
/* Note that we've deleted prologue bytes for this
|
| 2603 |
|
|
function. */
|
| 2604 |
|
|
sym_hash->flags |= MN10300_DELETED_PROLOGUE_BYTES;
|
| 2605 |
|
|
|
| 2606 |
|
|
/* Actually delete the bytes. */
|
| 2607 |
|
|
symval = sym_hash->root.root.u.def.value;
|
| 2608 |
|
|
if (!mn10300_elf_relax_delete_bytes (input_bfd,
|
| 2609 |
|
|
section,
|
| 2610 |
|
|
symval,
|
| 2611 |
|
|
bytes))
|
| 2612 |
|
|
goto error_return;
|
| 2613 |
|
|
|
| 2614 |
|
|
/* Something changed. Not strictly necessary, but
|
| 2615 |
|
|
may lead to more relaxing opportunities. */
|
| 2616 |
|
|
*again = TRUE;
|
| 2617 |
|
|
}
|
| 2618 |
|
|
}
|
| 2619 |
|
|
|
| 2620 |
|
|
/* Cache or free any memory we allocated for the relocs. */
|
| 2621 |
|
|
if (internal_relocs != NULL
|
| 2622 |
|
|
&& elf_section_data (section)->relocs != internal_relocs)
|
| 2623 |
|
|
free (internal_relocs);
|
| 2624 |
|
|
internal_relocs = NULL;
|
| 2625 |
|
|
|
| 2626 |
|
|
/* Cache or free any memory we allocated for the contents. */
|
| 2627 |
|
|
if (contents != NULL
|
| 2628 |
|
|
&& elf_section_data (section)->this_hdr.contents != contents)
|
| 2629 |
|
|
{
|
| 2630 |
|
|
if (! link_info->keep_memory)
|
| 2631 |
|
|
free (contents);
|
| 2632 |
|
|
else
|
| 2633 |
|
|
/* Cache the section contents for elf_link_input_bfd. */
|
| 2634 |
|
|
elf_section_data (section)->this_hdr.contents = contents;
|
| 2635 |
|
|
}
|
| 2636 |
|
|
contents = NULL;
|
| 2637 |
|
|
}
|
| 2638 |
|
|
|
| 2639 |
|
|
/* Cache or free any memory we allocated for the symbols. */
|
| 2640 |
|
|
if (isymbuf != NULL
|
| 2641 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
| 2642 |
|
|
{
|
| 2643 |
|
|
if (! link_info->keep_memory)
|
| 2644 |
|
|
free (isymbuf);
|
| 2645 |
|
|
else
|
| 2646 |
|
|
/* Cache the symbols for elf_link_input_bfd. */
|
| 2647 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 2648 |
|
|
}
|
| 2649 |
|
|
isymbuf = NULL;
|
| 2650 |
|
|
}
|
| 2651 |
|
|
}
|
| 2652 |
|
|
|
| 2653 |
|
|
/* (Re)initialize for the basic instruction shortening/relaxing pass. */
|
| 2654 |
|
|
contents = NULL;
|
| 2655 |
|
|
internal_relocs = NULL;
|
| 2656 |
|
|
isymbuf = NULL;
|
| 2657 |
|
|
/* For error_return. */
|
| 2658 |
|
|
section = sec;
|
| 2659 |
|
|
|
| 2660 |
|
|
/* We don't have to do anything for a relocatable link, if
|
| 2661 |
|
|
this section does not have relocs, or if this is not a
|
| 2662 |
|
|
code section. */
|
| 2663 |
|
|
if (link_info->relocatable
|
| 2664 |
|
|
|| (sec->flags & SEC_RELOC) == 0
|
| 2665 |
|
|
|| sec->reloc_count == 0
|
| 2666 |
|
|
|| (sec->flags & SEC_CODE) == 0)
|
| 2667 |
|
|
return TRUE;
|
| 2668 |
|
|
|
| 2669 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
| 2670 |
|
|
|
| 2671 |
|
|
/* Get a copy of the native relocations. */
|
| 2672 |
|
|
internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
|
| 2673 |
|
|
link_info->keep_memory);
|
| 2674 |
|
|
if (internal_relocs == NULL)
|
| 2675 |
|
|
goto error_return;
|
| 2676 |
|
|
|
| 2677 |
|
|
/* Scan for worst case alignment gap changes. Note that this logic
|
| 2678 |
|
|
is not ideal; what we should do is run this scan for every
|
| 2679 |
|
|
opcode/address range and adjust accordingly, but that's
|
| 2680 |
|
|
expensive. Worst case is that for an alignment of N bytes, we
|
| 2681 |
|
|
move by 2*N-N-1 bytes, assuming we have aligns of 1, 2, 4, 8, etc
|
| 2682 |
|
|
all before it. Plus, this still doesn't cover cross-section
|
| 2683 |
|
|
jumps with section alignment. */
|
| 2684 |
|
|
irelend = internal_relocs + sec->reloc_count;
|
| 2685 |
|
|
align_gap_adjustment = 0;
|
| 2686 |
|
|
for (irel = internal_relocs; irel < irelend; irel++)
|
| 2687 |
|
|
{
|
| 2688 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_ALIGN)
|
| 2689 |
|
|
{
|
| 2690 |
|
|
bfd_vma adj = 1 << irel->r_addend;
|
| 2691 |
|
|
bfd_vma aend = irel->r_offset;
|
| 2692 |
|
|
|
| 2693 |
|
|
aend = BFD_ALIGN (aend, 1 << irel->r_addend);
|
| 2694 |
|
|
adj = 2 * adj - adj - 1;
|
| 2695 |
|
|
|
| 2696 |
|
|
/* Record the biggest adjustmnet. Skip any alignment at the
|
| 2697 |
|
|
end of our section. */
|
| 2698 |
|
|
if (align_gap_adjustment < adj
|
| 2699 |
|
|
&& aend < sec->output_section->vma + sec->output_offset + sec->size)
|
| 2700 |
|
|
align_gap_adjustment = adj;
|
| 2701 |
|
|
}
|
| 2702 |
|
|
}
|
| 2703 |
|
|
|
| 2704 |
|
|
/* Walk through them looking for relaxing opportunities. */
|
| 2705 |
|
|
irelend = internal_relocs + sec->reloc_count;
|
| 2706 |
|
|
for (irel = internal_relocs; irel < irelend; irel++)
|
| 2707 |
|
|
{
|
| 2708 |
|
|
bfd_vma symval;
|
| 2709 |
|
|
bfd_signed_vma jump_offset;
|
| 2710 |
|
|
asection *sym_sec = NULL;
|
| 2711 |
|
|
struct elf32_mn10300_link_hash_entry *h = NULL;
|
| 2712 |
|
|
|
| 2713 |
|
|
/* If this isn't something that can be relaxed, then ignore
|
| 2714 |
|
|
this reloc. */
|
| 2715 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_NONE
|
| 2716 |
|
|
|| ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_8
|
| 2717 |
|
|
|| ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_MAX)
|
| 2718 |
|
|
continue;
|
| 2719 |
|
|
|
| 2720 |
|
|
/* Get the section contents if we haven't done so already. */
|
| 2721 |
|
|
if (contents == NULL)
|
| 2722 |
|
|
{
|
| 2723 |
|
|
/* Get cached copy if it exists. */
|
| 2724 |
|
|
if (elf_section_data (sec)->this_hdr.contents != NULL)
|
| 2725 |
|
|
contents = elf_section_data (sec)->this_hdr.contents;
|
| 2726 |
|
|
else
|
| 2727 |
|
|
{
|
| 2728 |
|
|
/* Go get them off disk. */
|
| 2729 |
|
|
if (!bfd_malloc_and_get_section (abfd, sec, &contents))
|
| 2730 |
|
|
goto error_return;
|
| 2731 |
|
|
}
|
| 2732 |
|
|
}
|
| 2733 |
|
|
|
| 2734 |
|
|
/* Read this BFD's symbols if we haven't done so already. */
|
| 2735 |
|
|
if (isymbuf == NULL && symtab_hdr->sh_info != 0)
|
| 2736 |
|
|
{
|
| 2737 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 2738 |
|
|
if (isymbuf == NULL)
|
| 2739 |
|
|
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
|
| 2740 |
|
|
symtab_hdr->sh_info, 0,
|
| 2741 |
|
|
NULL, NULL, NULL);
|
| 2742 |
|
|
if (isymbuf == NULL)
|
| 2743 |
|
|
goto error_return;
|
| 2744 |
|
|
}
|
| 2745 |
|
|
|
| 2746 |
|
|
/* Get the value of the symbol referred to by the reloc. */
|
| 2747 |
|
|
if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
|
| 2748 |
|
|
{
|
| 2749 |
|
|
Elf_Internal_Sym *isym;
|
| 2750 |
|
|
const char *sym_name;
|
| 2751 |
|
|
char *new_name;
|
| 2752 |
|
|
|
| 2753 |
|
|
/* A local symbol. */
|
| 2754 |
|
|
isym = isymbuf + ELF32_R_SYM (irel->r_info);
|
| 2755 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
| 2756 |
|
|
sym_sec = bfd_und_section_ptr;
|
| 2757 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
| 2758 |
|
|
sym_sec = bfd_abs_section_ptr;
|
| 2759 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
| 2760 |
|
|
sym_sec = bfd_com_section_ptr;
|
| 2761 |
|
|
else
|
| 2762 |
|
|
sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
| 2763 |
|
|
|
| 2764 |
|
|
sym_name = bfd_elf_string_from_elf_section (abfd,
|
| 2765 |
|
|
symtab_hdr->sh_link,
|
| 2766 |
|
|
isym->st_name);
|
| 2767 |
|
|
|
| 2768 |
|
|
if ((sym_sec->flags & SEC_MERGE)
|
| 2769 |
|
|
&& sym_sec->sec_info_type == ELF_INFO_TYPE_MERGE)
|
| 2770 |
|
|
{
|
| 2771 |
|
|
symval = isym->st_value;
|
| 2772 |
|
|
|
| 2773 |
|
|
/* GAS may reduce relocations against symbols in SEC_MERGE
|
| 2774 |
|
|
sections to a relocation against the section symbol when
|
| 2775 |
|
|
the original addend was zero. When the reloc is against
|
| 2776 |
|
|
a section symbol we should include the addend in the
|
| 2777 |
|
|
offset passed to _bfd_merged_section_offset, since the
|
| 2778 |
|
|
location of interest is the original symbol. On the
|
| 2779 |
|
|
other hand, an access to "sym+addend" where "sym" is not
|
| 2780 |
|
|
a section symbol should not include the addend; Such an
|
| 2781 |
|
|
access is presumed to be an offset from "sym"; The
|
| 2782 |
|
|
location of interest is just "sym". */
|
| 2783 |
|
|
if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
|
| 2784 |
|
|
symval += irel->r_addend;
|
| 2785 |
|
|
|
| 2786 |
|
|
symval = _bfd_merged_section_offset (abfd, & sym_sec,
|
| 2787 |
|
|
elf_section_data (sym_sec)->sec_info,
|
| 2788 |
|
|
symval);
|
| 2789 |
|
|
|
| 2790 |
|
|
if (ELF_ST_TYPE (isym->st_info) != STT_SECTION)
|
| 2791 |
|
|
symval += irel->r_addend;
|
| 2792 |
|
|
|
| 2793 |
|
|
symval += sym_sec->output_section->vma
|
| 2794 |
|
|
+ sym_sec->output_offset - irel->r_addend;
|
| 2795 |
|
|
}
|
| 2796 |
|
|
else
|
| 2797 |
|
|
symval = (isym->st_value
|
| 2798 |
|
|
+ sym_sec->output_section->vma
|
| 2799 |
|
|
+ sym_sec->output_offset);
|
| 2800 |
|
|
|
| 2801 |
|
|
/* Tack on an ID so we can uniquely identify this
|
| 2802 |
|
|
local symbol in the global hash table. */
|
| 2803 |
|
|
new_name = bfd_malloc ((bfd_size_type) strlen (sym_name) + 10);
|
| 2804 |
|
|
if (new_name == NULL)
|
| 2805 |
|
|
goto error_return;
|
| 2806 |
|
|
sprintf (new_name, "%s_%08x", sym_name, sym_sec->id);
|
| 2807 |
|
|
sym_name = new_name;
|
| 2808 |
|
|
|
| 2809 |
|
|
h = (struct elf32_mn10300_link_hash_entry *)
|
| 2810 |
|
|
elf_link_hash_lookup (&hash_table->static_hash_table->root,
|
| 2811 |
|
|
sym_name, FALSE, FALSE, FALSE);
|
| 2812 |
|
|
free (new_name);
|
| 2813 |
|
|
}
|
| 2814 |
|
|
else
|
| 2815 |
|
|
{
|
| 2816 |
|
|
unsigned long indx;
|
| 2817 |
|
|
|
| 2818 |
|
|
/* An external symbol. */
|
| 2819 |
|
|
indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
|
| 2820 |
|
|
h = (struct elf32_mn10300_link_hash_entry *)
|
| 2821 |
|
|
(elf_sym_hashes (abfd)[indx]);
|
| 2822 |
|
|
BFD_ASSERT (h != NULL);
|
| 2823 |
|
|
if (h->root.root.type != bfd_link_hash_defined
|
| 2824 |
|
|
&& h->root.root.type != bfd_link_hash_defweak)
|
| 2825 |
|
|
/* This appears to be a reference to an undefined
|
| 2826 |
|
|
symbol. Just ignore it--it will be caught by the
|
| 2827 |
|
|
regular reloc processing. */
|
| 2828 |
|
|
continue;
|
| 2829 |
|
|
|
| 2830 |
|
|
/* Check for a reference to a discarded symbol and ignore it. */
|
| 2831 |
|
|
if (h->root.root.u.def.section->output_section == NULL)
|
| 2832 |
|
|
continue;
|
| 2833 |
|
|
|
| 2834 |
|
|
sym_sec = h->root.root.u.def.section->output_section;
|
| 2835 |
|
|
|
| 2836 |
|
|
symval = (h->root.root.u.def.value
|
| 2837 |
|
|
+ h->root.root.u.def.section->output_section->vma
|
| 2838 |
|
|
+ h->root.root.u.def.section->output_offset);
|
| 2839 |
|
|
}
|
| 2840 |
|
|
|
| 2841 |
|
|
/* For simplicity of coding, we are going to modify the section
|
| 2842 |
|
|
contents, the section relocs, and the BFD symbol table. We
|
| 2843 |
|
|
must tell the rest of the code not to free up this
|
| 2844 |
|
|
information. It would be possible to instead create a table
|
| 2845 |
|
|
of changes which have to be made, as is done in coff-mips.c;
|
| 2846 |
|
|
that would be more work, but would require less memory when
|
| 2847 |
|
|
the linker is run. */
|
| 2848 |
|
|
|
| 2849 |
|
|
/* Try to turn a 32bit pc-relative branch/call into a 16bit pc-relative
|
| 2850 |
|
|
branch/call, also deal with "call" -> "calls" conversions and
|
| 2851 |
|
|
insertion of prologue data into "call" instructions. */
|
| 2852 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL32
|
| 2853 |
|
|
|| ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32)
|
| 2854 |
|
|
{
|
| 2855 |
|
|
bfd_vma value = symval;
|
| 2856 |
|
|
|
| 2857 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PLT32
|
| 2858 |
|
|
&& h != NULL
|
| 2859 |
|
|
&& ELF_ST_VISIBILITY (h->root.other) != STV_INTERNAL
|
| 2860 |
|
|
&& ELF_ST_VISIBILITY (h->root.other) != STV_HIDDEN
|
| 2861 |
|
|
&& h->root.plt.offset != (bfd_vma) -1)
|
| 2862 |
|
|
{
|
| 2863 |
|
|
asection * splt;
|
| 2864 |
|
|
|
| 2865 |
|
|
splt = bfd_get_section_by_name (elf_hash_table (link_info)
|
| 2866 |
|
|
->dynobj, ".plt");
|
| 2867 |
|
|
|
| 2868 |
|
|
value = ((splt->output_section->vma
|
| 2869 |
|
|
+ splt->output_offset
|
| 2870 |
|
|
+ h->root.plt.offset)
|
| 2871 |
|
|
- (sec->output_section->vma
|
| 2872 |
|
|
+ sec->output_offset
|
| 2873 |
|
|
+ irel->r_offset));
|
| 2874 |
|
|
}
|
| 2875 |
|
|
|
| 2876 |
|
|
/* If we've got a "call" instruction that needs to be turned
|
| 2877 |
|
|
into a "calls" instruction, do so now. It saves a byte. */
|
| 2878 |
|
|
if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
|
| 2879 |
|
|
{
|
| 2880 |
|
|
unsigned char code;
|
| 2881 |
|
|
|
| 2882 |
|
|
/* Get the opcode. */
|
| 2883 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
| 2884 |
|
|
|
| 2885 |
|
|
/* Make sure we're working with a "call" instruction! */
|
| 2886 |
|
|
if (code == 0xdd)
|
| 2887 |
|
|
{
|
| 2888 |
|
|
/* Note that we've changed the relocs, section contents,
|
| 2889 |
|
|
etc. */
|
| 2890 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 2891 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 2892 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 2893 |
|
|
|
| 2894 |
|
|
/* Fix the opcode. */
|
| 2895 |
|
|
bfd_put_8 (abfd, 0xfc, contents + irel->r_offset - 1);
|
| 2896 |
|
|
bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
|
| 2897 |
|
|
|
| 2898 |
|
|
/* Fix irel->r_offset and irel->r_addend. */
|
| 2899 |
|
|
irel->r_offset += 1;
|
| 2900 |
|
|
irel->r_addend += 1;
|
| 2901 |
|
|
|
| 2902 |
|
|
/* Delete one byte of data. */
|
| 2903 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
| 2904 |
|
|
irel->r_offset + 3, 1))
|
| 2905 |
|
|
goto error_return;
|
| 2906 |
|
|
|
| 2907 |
|
|
/* That will change things, so, we should relax again.
|
| 2908 |
|
|
Note that this is not required, and it may be slow. */
|
| 2909 |
|
|
*again = TRUE;
|
| 2910 |
|
|
}
|
| 2911 |
|
|
}
|
| 2912 |
|
|
else if (h)
|
| 2913 |
|
|
{
|
| 2914 |
|
|
/* We've got a "call" instruction which needs some data
|
| 2915 |
|
|
from target function filled in. */
|
| 2916 |
|
|
unsigned char code;
|
| 2917 |
|
|
|
| 2918 |
|
|
/* Get the opcode. */
|
| 2919 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
| 2920 |
|
|
|
| 2921 |
|
|
/* Insert data from the target function into the "call"
|
| 2922 |
|
|
instruction if needed. */
|
| 2923 |
|
|
if (code == 0xdd)
|
| 2924 |
|
|
{
|
| 2925 |
|
|
bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 4);
|
| 2926 |
|
|
bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
|
| 2927 |
|
|
contents + irel->r_offset + 5);
|
| 2928 |
|
|
}
|
| 2929 |
|
|
}
|
| 2930 |
|
|
|
| 2931 |
|
|
/* Deal with pc-relative gunk. */
|
| 2932 |
|
|
value -= (sec->output_section->vma + sec->output_offset);
|
| 2933 |
|
|
value -= irel->r_offset;
|
| 2934 |
|
|
value += irel->r_addend;
|
| 2935 |
|
|
|
| 2936 |
|
|
/* See if the value will fit in 16 bits, note the high value is
|
| 2937 |
|
|
0x7fff + 2 as the target will be two bytes closer if we are
|
| 2938 |
|
|
able to relax, if it's in the same section. */
|
| 2939 |
|
|
if (sec->output_section == sym_sec->output_section)
|
| 2940 |
|
|
jump_offset = 0x8001;
|
| 2941 |
|
|
else
|
| 2942 |
|
|
jump_offset = 0x7fff;
|
| 2943 |
|
|
|
| 2944 |
|
|
/* Account for jumps across alignment boundaries using
|
| 2945 |
|
|
align_gap_adjustment. */
|
| 2946 |
|
|
if ((bfd_signed_vma) value < jump_offset - (bfd_signed_vma) align_gap_adjustment
|
| 2947 |
|
|
&& ((bfd_signed_vma) value > -0x8000 + (bfd_signed_vma) align_gap_adjustment))
|
| 2948 |
|
|
{
|
| 2949 |
|
|
unsigned char code;
|
| 2950 |
|
|
|
| 2951 |
|
|
/* Get the opcode. */
|
| 2952 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
| 2953 |
|
|
|
| 2954 |
|
|
if (code != 0xdc && code != 0xdd && code != 0xff)
|
| 2955 |
|
|
continue;
|
| 2956 |
|
|
|
| 2957 |
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
| 2958 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 2959 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 2960 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 2961 |
|
|
|
| 2962 |
|
|
/* Fix the opcode. */
|
| 2963 |
|
|
if (code == 0xdc)
|
| 2964 |
|
|
bfd_put_8 (abfd, 0xcc, contents + irel->r_offset - 1);
|
| 2965 |
|
|
else if (code == 0xdd)
|
| 2966 |
|
|
bfd_put_8 (abfd, 0xcd, contents + irel->r_offset - 1);
|
| 2967 |
|
|
else if (code == 0xff)
|
| 2968 |
|
|
bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
|
| 2969 |
|
|
|
| 2970 |
|
|
/* Fix the relocation's type. */
|
| 2971 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 2972 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
| 2973 |
|
|
== (int) R_MN10300_PLT32)
|
| 2974 |
|
|
? R_MN10300_PLT16 :
|
| 2975 |
|
|
R_MN10300_PCREL16);
|
| 2976 |
|
|
|
| 2977 |
|
|
/* Delete two bytes of data. */
|
| 2978 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
| 2979 |
|
|
irel->r_offset + 1, 2))
|
| 2980 |
|
|
goto error_return;
|
| 2981 |
|
|
|
| 2982 |
|
|
/* That will change things, so, we should relax again.
|
| 2983 |
|
|
Note that this is not required, and it may be slow. */
|
| 2984 |
|
|
*again = TRUE;
|
| 2985 |
|
|
}
|
| 2986 |
|
|
}
|
| 2987 |
|
|
|
| 2988 |
|
|
/* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
|
| 2989 |
|
|
branch. */
|
| 2990 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL16)
|
| 2991 |
|
|
{
|
| 2992 |
|
|
bfd_vma value = symval;
|
| 2993 |
|
|
|
| 2994 |
|
|
/* If we've got a "call" instruction that needs to be turned
|
| 2995 |
|
|
into a "calls" instruction, do so now. It saves a byte. */
|
| 2996 |
|
|
if (h && (h->flags & MN10300_CONVERT_CALL_TO_CALLS))
|
| 2997 |
|
|
{
|
| 2998 |
|
|
unsigned char code;
|
| 2999 |
|
|
|
| 3000 |
|
|
/* Get the opcode. */
|
| 3001 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
| 3002 |
|
|
|
| 3003 |
|
|
/* Make sure we're working with a "call" instruction! */
|
| 3004 |
|
|
if (code == 0xcd)
|
| 3005 |
|
|
{
|
| 3006 |
|
|
/* Note that we've changed the relocs, section contents,
|
| 3007 |
|
|
etc. */
|
| 3008 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 3009 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 3010 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 3011 |
|
|
|
| 3012 |
|
|
/* Fix the opcode. */
|
| 3013 |
|
|
bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 1);
|
| 3014 |
|
|
bfd_put_8 (abfd, 0xff, contents + irel->r_offset);
|
| 3015 |
|
|
|
| 3016 |
|
|
/* Fix irel->r_offset and irel->r_addend. */
|
| 3017 |
|
|
irel->r_offset += 1;
|
| 3018 |
|
|
irel->r_addend += 1;
|
| 3019 |
|
|
|
| 3020 |
|
|
/* Delete one byte of data. */
|
| 3021 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
| 3022 |
|
|
irel->r_offset + 1, 1))
|
| 3023 |
|
|
goto error_return;
|
| 3024 |
|
|
|
| 3025 |
|
|
/* That will change things, so, we should relax again.
|
| 3026 |
|
|
Note that this is not required, and it may be slow. */
|
| 3027 |
|
|
*again = TRUE;
|
| 3028 |
|
|
}
|
| 3029 |
|
|
}
|
| 3030 |
|
|
else if (h)
|
| 3031 |
|
|
{
|
| 3032 |
|
|
unsigned char code;
|
| 3033 |
|
|
|
| 3034 |
|
|
/* Get the opcode. */
|
| 3035 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
| 3036 |
|
|
|
| 3037 |
|
|
/* Insert data from the target function into the "call"
|
| 3038 |
|
|
instruction if needed. */
|
| 3039 |
|
|
if (code == 0xcd)
|
| 3040 |
|
|
{
|
| 3041 |
|
|
bfd_put_8 (abfd, h->movm_args, contents + irel->r_offset + 2);
|
| 3042 |
|
|
bfd_put_8 (abfd, h->stack_size + h->movm_stack_size,
|
| 3043 |
|
|
contents + irel->r_offset + 3);
|
| 3044 |
|
|
}
|
| 3045 |
|
|
}
|
| 3046 |
|
|
|
| 3047 |
|
|
/* Deal with pc-relative gunk. */
|
| 3048 |
|
|
value -= (sec->output_section->vma + sec->output_offset);
|
| 3049 |
|
|
value -= irel->r_offset;
|
| 3050 |
|
|
value += irel->r_addend;
|
| 3051 |
|
|
|
| 3052 |
|
|
/* See if the value will fit in 8 bits, note the high value is
|
| 3053 |
|
|
0x7f + 1 as the target will be one bytes closer if we are
|
| 3054 |
|
|
able to relax. */
|
| 3055 |
|
|
if ((long) value < 0x80 && (long) value > -0x80)
|
| 3056 |
|
|
{
|
| 3057 |
|
|
unsigned char code;
|
| 3058 |
|
|
|
| 3059 |
|
|
/* Get the opcode. */
|
| 3060 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
| 3061 |
|
|
|
| 3062 |
|
|
if (code != 0xcc)
|
| 3063 |
|
|
continue;
|
| 3064 |
|
|
|
| 3065 |
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
| 3066 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 3067 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 3068 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 3069 |
|
|
|
| 3070 |
|
|
/* Fix the opcode. */
|
| 3071 |
|
|
bfd_put_8 (abfd, 0xca, contents + irel->r_offset - 1);
|
| 3072 |
|
|
|
| 3073 |
|
|
/* Fix the relocation's type. */
|
| 3074 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 3075 |
|
|
R_MN10300_PCREL8);
|
| 3076 |
|
|
|
| 3077 |
|
|
/* Delete one byte of data. */
|
| 3078 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
| 3079 |
|
|
irel->r_offset + 1, 1))
|
| 3080 |
|
|
goto error_return;
|
| 3081 |
|
|
|
| 3082 |
|
|
/* That will change things, so, we should relax again.
|
| 3083 |
|
|
Note that this is not required, and it may be slow. */
|
| 3084 |
|
|
*again = TRUE;
|
| 3085 |
|
|
}
|
| 3086 |
|
|
}
|
| 3087 |
|
|
|
| 3088 |
|
|
/* Try to eliminate an unconditional 8 bit pc-relative branch
|
| 3089 |
|
|
which immediately follows a conditional 8 bit pc-relative
|
| 3090 |
|
|
branch around the unconditional branch.
|
| 3091 |
|
|
|
| 3092 |
|
|
original: new:
|
| 3093 |
|
|
bCC lab1 bCC' lab2
|
| 3094 |
|
|
bra lab2
|
| 3095 |
|
|
lab1: lab1:
|
| 3096 |
|
|
|
| 3097 |
|
|
This happens when the bCC can't reach lab2 at assembly time,
|
| 3098 |
|
|
but due to other relaxations it can reach at link time. */
|
| 3099 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_PCREL8)
|
| 3100 |
|
|
{
|
| 3101 |
|
|
Elf_Internal_Rela *nrel;
|
| 3102 |
|
|
bfd_vma value = symval;
|
| 3103 |
|
|
unsigned char code;
|
| 3104 |
|
|
|
| 3105 |
|
|
/* Deal with pc-relative gunk. */
|
| 3106 |
|
|
value -= (sec->output_section->vma + sec->output_offset);
|
| 3107 |
|
|
value -= irel->r_offset;
|
| 3108 |
|
|
value += irel->r_addend;
|
| 3109 |
|
|
|
| 3110 |
|
|
/* Do nothing if this reloc is the last byte in the section. */
|
| 3111 |
|
|
if (irel->r_offset == sec->size)
|
| 3112 |
|
|
continue;
|
| 3113 |
|
|
|
| 3114 |
|
|
/* See if the next instruction is an unconditional pc-relative
|
| 3115 |
|
|
branch, more often than not this test will fail, so we
|
| 3116 |
|
|
test it first to speed things up. */
|
| 3117 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset + 1);
|
| 3118 |
|
|
if (code != 0xca)
|
| 3119 |
|
|
continue;
|
| 3120 |
|
|
|
| 3121 |
|
|
/* Also make sure the next relocation applies to the next
|
| 3122 |
|
|
instruction and that it's a pc-relative 8 bit branch. */
|
| 3123 |
|
|
nrel = irel + 1;
|
| 3124 |
|
|
if (nrel == irelend
|
| 3125 |
|
|
|| irel->r_offset + 2 != nrel->r_offset
|
| 3126 |
|
|
|| ELF32_R_TYPE (nrel->r_info) != (int) R_MN10300_PCREL8)
|
| 3127 |
|
|
continue;
|
| 3128 |
|
|
|
| 3129 |
|
|
/* Make sure our destination immediately follows the
|
| 3130 |
|
|
unconditional branch. */
|
| 3131 |
|
|
if (symval != (sec->output_section->vma + sec->output_offset
|
| 3132 |
|
|
+ irel->r_offset + 3))
|
| 3133 |
|
|
continue;
|
| 3134 |
|
|
|
| 3135 |
|
|
/* Now make sure we are a conditional branch. This may not
|
| 3136 |
|
|
be necessary, but why take the chance.
|
| 3137 |
|
|
|
| 3138 |
|
|
Note these checks assume that R_MN10300_PCREL8 relocs
|
| 3139 |
|
|
only occur on bCC and bCCx insns. If they occured
|
| 3140 |
|
|
elsewhere, we'd need to know the start of this insn
|
| 3141 |
|
|
for this check to be accurate. */
|
| 3142 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
| 3143 |
|
|
if (code != 0xc0 && code != 0xc1 && code != 0xc2
|
| 3144 |
|
|
&& code != 0xc3 && code != 0xc4 && code != 0xc5
|
| 3145 |
|
|
&& code != 0xc6 && code != 0xc7 && code != 0xc8
|
| 3146 |
|
|
&& code != 0xc9 && code != 0xe8 && code != 0xe9
|
| 3147 |
|
|
&& code != 0xea && code != 0xeb)
|
| 3148 |
|
|
continue;
|
| 3149 |
|
|
|
| 3150 |
|
|
/* We also have to be sure there is no symbol/label
|
| 3151 |
|
|
at the unconditional branch. */
|
| 3152 |
|
|
if (mn10300_elf_symbol_address_p (abfd, sec, isymbuf,
|
| 3153 |
|
|
irel->r_offset + 1))
|
| 3154 |
|
|
continue;
|
| 3155 |
|
|
|
| 3156 |
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
| 3157 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 3158 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 3159 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 3160 |
|
|
|
| 3161 |
|
|
/* Reverse the condition of the first branch. */
|
| 3162 |
|
|
switch (code)
|
| 3163 |
|
|
{
|
| 3164 |
|
|
case 0xc8:
|
| 3165 |
|
|
code = 0xc9;
|
| 3166 |
|
|
break;
|
| 3167 |
|
|
case 0xc9:
|
| 3168 |
|
|
code = 0xc8;
|
| 3169 |
|
|
break;
|
| 3170 |
|
|
case 0xc0:
|
| 3171 |
|
|
code = 0xc2;
|
| 3172 |
|
|
break;
|
| 3173 |
|
|
case 0xc2:
|
| 3174 |
|
|
code = 0xc0;
|
| 3175 |
|
|
break;
|
| 3176 |
|
|
case 0xc3:
|
| 3177 |
|
|
code = 0xc1;
|
| 3178 |
|
|
break;
|
| 3179 |
|
|
case 0xc1:
|
| 3180 |
|
|
code = 0xc3;
|
| 3181 |
|
|
break;
|
| 3182 |
|
|
case 0xc4:
|
| 3183 |
|
|
code = 0xc6;
|
| 3184 |
|
|
break;
|
| 3185 |
|
|
case 0xc6:
|
| 3186 |
|
|
code = 0xc4;
|
| 3187 |
|
|
break;
|
| 3188 |
|
|
case 0xc7:
|
| 3189 |
|
|
code = 0xc5;
|
| 3190 |
|
|
break;
|
| 3191 |
|
|
case 0xc5:
|
| 3192 |
|
|
code = 0xc7;
|
| 3193 |
|
|
break;
|
| 3194 |
|
|
case 0xe8:
|
| 3195 |
|
|
code = 0xe9;
|
| 3196 |
|
|
break;
|
| 3197 |
|
|
case 0x9d:
|
| 3198 |
|
|
code = 0xe8;
|
| 3199 |
|
|
break;
|
| 3200 |
|
|
case 0xea:
|
| 3201 |
|
|
code = 0xeb;
|
| 3202 |
|
|
break;
|
| 3203 |
|
|
case 0xeb:
|
| 3204 |
|
|
code = 0xea;
|
| 3205 |
|
|
break;
|
| 3206 |
|
|
}
|
| 3207 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
|
| 3208 |
|
|
|
| 3209 |
|
|
/* Set the reloc type and symbol for the first branch
|
| 3210 |
|
|
from the second branch. */
|
| 3211 |
|
|
irel->r_info = nrel->r_info;
|
| 3212 |
|
|
|
| 3213 |
|
|
/* Make the reloc for the second branch a null reloc. */
|
| 3214 |
|
|
nrel->r_info = ELF32_R_INFO (ELF32_R_SYM (nrel->r_info),
|
| 3215 |
|
|
R_MN10300_NONE);
|
| 3216 |
|
|
|
| 3217 |
|
|
/* Delete two bytes of data. */
|
| 3218 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
| 3219 |
|
|
irel->r_offset + 1, 2))
|
| 3220 |
|
|
goto error_return;
|
| 3221 |
|
|
|
| 3222 |
|
|
/* That will change things, so, we should relax again.
|
| 3223 |
|
|
Note that this is not required, and it may be slow. */
|
| 3224 |
|
|
*again = TRUE;
|
| 3225 |
|
|
}
|
| 3226 |
|
|
|
| 3227 |
|
|
/* Try to turn a 24 immediate, displacement or absolute address
|
| 3228 |
|
|
into a 8 immediate, displacement or absolute address. */
|
| 3229 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_24)
|
| 3230 |
|
|
{
|
| 3231 |
|
|
bfd_vma value = symval;
|
| 3232 |
|
|
value += irel->r_addend;
|
| 3233 |
|
|
|
| 3234 |
|
|
/* See if the value will fit in 8 bits. */
|
| 3235 |
|
|
if ((long) value < 0x7f && (long) value > -0x80)
|
| 3236 |
|
|
{
|
| 3237 |
|
|
unsigned char code;
|
| 3238 |
|
|
|
| 3239 |
|
|
/* AM33 insns which have 24 operands are 6 bytes long and
|
| 3240 |
|
|
will have 0xfd as the first byte. */
|
| 3241 |
|
|
|
| 3242 |
|
|
/* Get the first opcode. */
|
| 3243 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
|
| 3244 |
|
|
|
| 3245 |
|
|
if (code == 0xfd)
|
| 3246 |
|
|
{
|
| 3247 |
|
|
/* Get the second opcode. */
|
| 3248 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
|
| 3249 |
|
|
|
| 3250 |
|
|
/* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
|
| 3251 |
|
|
equivalent instructions exists. */
|
| 3252 |
|
|
if (code != 0x6b && code != 0x7b
|
| 3253 |
|
|
&& code != 0x8b && code != 0x9b
|
| 3254 |
|
|
&& ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
|
| 3255 |
|
|
|| (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
|
| 3256 |
|
|
|| (code & 0x0f) == 0x0e))
|
| 3257 |
|
|
{
|
| 3258 |
|
|
/* Not safe if the high bit is on as relaxing may
|
| 3259 |
|
|
move the value out of high mem and thus not fit
|
| 3260 |
|
|
in a signed 8bit value. This is currently over
|
| 3261 |
|
|
conservative. */
|
| 3262 |
|
|
if ((value & 0x80) == 0)
|
| 3263 |
|
|
{
|
| 3264 |
|
|
/* Note that we've changed the relocation contents,
|
| 3265 |
|
|
etc. */
|
| 3266 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 3267 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 3268 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 3269 |
|
|
|
| 3270 |
|
|
/* Fix the opcode. */
|
| 3271 |
|
|
bfd_put_8 (abfd, 0xfb, contents + irel->r_offset - 3);
|
| 3272 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
|
| 3273 |
|
|
|
| 3274 |
|
|
/* Fix the relocation's type. */
|
| 3275 |
|
|
irel->r_info =
|
| 3276 |
|
|
ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 3277 |
|
|
R_MN10300_8);
|
| 3278 |
|
|
|
| 3279 |
|
|
/* Delete two bytes of data. */
|
| 3280 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
| 3281 |
|
|
irel->r_offset + 1, 2))
|
| 3282 |
|
|
goto error_return;
|
| 3283 |
|
|
|
| 3284 |
|
|
/* That will change things, so, we should relax
|
| 3285 |
|
|
again. Note that this is not required, and it
|
| 3286 |
|
|
may be slow. */
|
| 3287 |
|
|
*again = TRUE;
|
| 3288 |
|
|
break;
|
| 3289 |
|
|
}
|
| 3290 |
|
|
}
|
| 3291 |
|
|
}
|
| 3292 |
|
|
}
|
| 3293 |
|
|
}
|
| 3294 |
|
|
|
| 3295 |
|
|
/* Try to turn a 32bit immediate, displacement or absolute address
|
| 3296 |
|
|
into a 16bit immediate, displacement or absolute address. */
|
| 3297 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_32
|
| 3298 |
|
|
|| ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32
|
| 3299 |
|
|
|| ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
|
| 3300 |
|
|
{
|
| 3301 |
|
|
bfd_vma value = symval;
|
| 3302 |
|
|
|
| 3303 |
|
|
if (ELF32_R_TYPE (irel->r_info) != (int) R_MN10300_32)
|
| 3304 |
|
|
{
|
| 3305 |
|
|
asection * sgot;
|
| 3306 |
|
|
|
| 3307 |
|
|
sgot = bfd_get_section_by_name (elf_hash_table (link_info)
|
| 3308 |
|
|
->dynobj, ".got");
|
| 3309 |
|
|
|
| 3310 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOT32)
|
| 3311 |
|
|
{
|
| 3312 |
|
|
value = sgot->output_offset;
|
| 3313 |
|
|
|
| 3314 |
|
|
if (h)
|
| 3315 |
|
|
value += h->root.got.offset;
|
| 3316 |
|
|
else
|
| 3317 |
|
|
value += (elf_local_got_offsets
|
| 3318 |
|
|
(abfd)[ELF32_R_SYM (irel->r_info)]);
|
| 3319 |
|
|
}
|
| 3320 |
|
|
else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTOFF32)
|
| 3321 |
|
|
value -= sgot->output_section->vma;
|
| 3322 |
|
|
else if (ELF32_R_TYPE (irel->r_info) == (int) R_MN10300_GOTPC32)
|
| 3323 |
|
|
value = (sgot->output_section->vma
|
| 3324 |
|
|
- (sec->output_section->vma
|
| 3325 |
|
|
+ sec->output_offset
|
| 3326 |
|
|
+ irel->r_offset));
|
| 3327 |
|
|
else
|
| 3328 |
|
|
abort ();
|
| 3329 |
|
|
}
|
| 3330 |
|
|
|
| 3331 |
|
|
value += irel->r_addend;
|
| 3332 |
|
|
|
| 3333 |
|
|
/* See if the value will fit in 24 bits.
|
| 3334 |
|
|
We allow any 16bit match here. We prune those we can't
|
| 3335 |
|
|
handle below. */
|
| 3336 |
|
|
if ((long) value < 0x7fffff && (long) value > -0x800000)
|
| 3337 |
|
|
{
|
| 3338 |
|
|
unsigned char code;
|
| 3339 |
|
|
|
| 3340 |
|
|
/* AM33 insns which have 32bit operands are 7 bytes long and
|
| 3341 |
|
|
will have 0xfe as the first byte. */
|
| 3342 |
|
|
|
| 3343 |
|
|
/* Get the first opcode. */
|
| 3344 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 3);
|
| 3345 |
|
|
|
| 3346 |
|
|
if (code == 0xfe)
|
| 3347 |
|
|
{
|
| 3348 |
|
|
/* Get the second opcode. */
|
| 3349 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
|
| 3350 |
|
|
|
| 3351 |
|
|
/* All the am33 32 -> 24 relaxing possibilities. */
|
| 3352 |
|
|
/* We can not relax 0x6b, 0x7b, 0x8b, 0x9b as no 24bit
|
| 3353 |
|
|
equivalent instructions exists. */
|
| 3354 |
|
|
if (code != 0x6b && code != 0x7b
|
| 3355 |
|
|
&& code != 0x8b && code != 0x9b
|
| 3356 |
|
|
&& (ELF32_R_TYPE (irel->r_info)
|
| 3357 |
|
|
!= (int) R_MN10300_GOTPC32)
|
| 3358 |
|
|
&& ((code & 0x0f) == 0x09 || (code & 0x0f) == 0x08
|
| 3359 |
|
|
|| (code & 0x0f) == 0x0a || (code & 0x0f) == 0x0b
|
| 3360 |
|
|
|| (code & 0x0f) == 0x0e))
|
| 3361 |
|
|
{
|
| 3362 |
|
|
/* Not safe if the high bit is on as relaxing may
|
| 3363 |
|
|
move the value out of high mem and thus not fit
|
| 3364 |
|
|
in a signed 16bit value. This is currently over
|
| 3365 |
|
|
conservative. */
|
| 3366 |
|
|
if ((value & 0x8000) == 0)
|
| 3367 |
|
|
{
|
| 3368 |
|
|
/* Note that we've changed the relocation contents,
|
| 3369 |
|
|
etc. */
|
| 3370 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 3371 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 3372 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 3373 |
|
|
|
| 3374 |
|
|
/* Fix the opcode. */
|
| 3375 |
|
|
bfd_put_8 (abfd, 0xfd, contents + irel->r_offset - 3);
|
| 3376 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
|
| 3377 |
|
|
|
| 3378 |
|
|
/* Fix the relocation's type. */
|
| 3379 |
|
|
irel->r_info =
|
| 3380 |
|
|
ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 3381 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
| 3382 |
|
|
== (int) R_MN10300_GOTOFF32)
|
| 3383 |
|
|
? R_MN10300_GOTOFF24
|
| 3384 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
| 3385 |
|
|
== (int) R_MN10300_GOT32)
|
| 3386 |
|
|
? R_MN10300_GOT24 :
|
| 3387 |
|
|
R_MN10300_24);
|
| 3388 |
|
|
|
| 3389 |
|
|
/* Delete one byte of data. */
|
| 3390 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
| 3391 |
|
|
irel->r_offset + 3, 1))
|
| 3392 |
|
|
goto error_return;
|
| 3393 |
|
|
|
| 3394 |
|
|
/* That will change things, so, we should relax
|
| 3395 |
|
|
again. Note that this is not required, and it
|
| 3396 |
|
|
may be slow. */
|
| 3397 |
|
|
*again = TRUE;
|
| 3398 |
|
|
break;
|
| 3399 |
|
|
}
|
| 3400 |
|
|
}
|
| 3401 |
|
|
}
|
| 3402 |
|
|
}
|
| 3403 |
|
|
|
| 3404 |
|
|
/* See if the value will fit in 16 bits.
|
| 3405 |
|
|
We allow any 16bit match here. We prune those we can't
|
| 3406 |
|
|
handle below. */
|
| 3407 |
|
|
if ((long) value < 0x7fff && (long) value > -0x8000)
|
| 3408 |
|
|
{
|
| 3409 |
|
|
unsigned char code;
|
| 3410 |
|
|
|
| 3411 |
|
|
/* Most insns which have 32bit operands are 6 bytes long;
|
| 3412 |
|
|
exceptions are pcrel insns and bit insns.
|
| 3413 |
|
|
|
| 3414 |
|
|
We handle pcrel insns above. We don't bother trying
|
| 3415 |
|
|
to handle the bit insns here.
|
| 3416 |
|
|
|
| 3417 |
|
|
The first byte of the remaining insns will be 0xfc. */
|
| 3418 |
|
|
|
| 3419 |
|
|
/* Get the first opcode. */
|
| 3420 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
|
| 3421 |
|
|
|
| 3422 |
|
|
if (code != 0xfc)
|
| 3423 |
|
|
continue;
|
| 3424 |
|
|
|
| 3425 |
|
|
/* Get the second opcode. */
|
| 3426 |
|
|
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
|
| 3427 |
|
|
|
| 3428 |
|
|
if ((code & 0xf0) < 0x80)
|
| 3429 |
|
|
switch (code & 0xf0)
|
| 3430 |
|
|
{
|
| 3431 |
|
|
/* mov (d32,am),dn -> mov (d32,am),dn
|
| 3432 |
|
|
mov dm,(d32,am) -> mov dn,(d32,am)
|
| 3433 |
|
|
mov (d32,am),an -> mov (d32,am),an
|
| 3434 |
|
|
mov dm,(d32,am) -> mov dn,(d32,am)
|
| 3435 |
|
|
movbu (d32,am),dn -> movbu (d32,am),dn
|
| 3436 |
|
|
movbu dm,(d32,am) -> movbu dn,(d32,am)
|
| 3437 |
|
|
movhu (d32,am),dn -> movhu (d32,am),dn
|
| 3438 |
|
|
movhu dm,(d32,am) -> movhu dn,(d32,am) */
|
| 3439 |
|
|
case 0x00:
|
| 3440 |
|
|
case 0x10:
|
| 3441 |
|
|
case 0x20:
|
| 3442 |
|
|
case 0x30:
|
| 3443 |
|
|
case 0x40:
|
| 3444 |
|
|
case 0x50:
|
| 3445 |
|
|
case 0x60:
|
| 3446 |
|
|
case 0x70:
|
| 3447 |
|
|
/* Not safe if the high bit is on as relaxing may
|
| 3448 |
|
|
move the value out of high mem and thus not fit
|
| 3449 |
|
|
in a signed 16bit value. */
|
| 3450 |
|
|
if (code == 0xcc
|
| 3451 |
|
|
&& (value & 0x8000))
|
| 3452 |
|
|
continue;
|
| 3453 |
|
|
|
| 3454 |
|
|
/* Note that we've changed the relocation contents, etc. */
|
| 3455 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 3456 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 3457 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 3458 |
|
|
|
| 3459 |
|
|
/* Fix the opcode. */
|
| 3460 |
|
|
bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
|
| 3461 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
|
| 3462 |
|
|
|
| 3463 |
|
|
/* Fix the relocation's type. */
|
| 3464 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 3465 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
| 3466 |
|
|
== (int) R_MN10300_GOTOFF32)
|
| 3467 |
|
|
? R_MN10300_GOTOFF16
|
| 3468 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
| 3469 |
|
|
== (int) R_MN10300_GOT32)
|
| 3470 |
|
|
? R_MN10300_GOT16
|
| 3471 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
| 3472 |
|
|
== (int) R_MN10300_GOTPC32)
|
| 3473 |
|
|
? R_MN10300_GOTPC16 :
|
| 3474 |
|
|
R_MN10300_16);
|
| 3475 |
|
|
|
| 3476 |
|
|
/* Delete two bytes of data. */
|
| 3477 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
| 3478 |
|
|
irel->r_offset + 2, 2))
|
| 3479 |
|
|
goto error_return;
|
| 3480 |
|
|
|
| 3481 |
|
|
/* That will change things, so, we should relax again.
|
| 3482 |
|
|
Note that this is not required, and it may be slow. */
|
| 3483 |
|
|
*again = TRUE;
|
| 3484 |
|
|
break;
|
| 3485 |
|
|
}
|
| 3486 |
|
|
else if ((code & 0xf0) == 0x80
|
| 3487 |
|
|
|| (code & 0xf0) == 0x90)
|
| 3488 |
|
|
switch (code & 0xf3)
|
| 3489 |
|
|
{
|
| 3490 |
|
|
/* mov dn,(abs32) -> mov dn,(abs16)
|
| 3491 |
|
|
movbu dn,(abs32) -> movbu dn,(abs16)
|
| 3492 |
|
|
movhu dn,(abs32) -> movhu dn,(abs16) */
|
| 3493 |
|
|
case 0x81:
|
| 3494 |
|
|
case 0x82:
|
| 3495 |
|
|
case 0x83:
|
| 3496 |
|
|
/* Note that we've changed the relocation contents, etc. */
|
| 3497 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 3498 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 3499 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 3500 |
|
|
|
| 3501 |
|
|
if ((code & 0xf3) == 0x81)
|
| 3502 |
|
|
code = 0x01 + (code & 0x0c);
|
| 3503 |
|
|
else if ((code & 0xf3) == 0x82)
|
| 3504 |
|
|
code = 0x02 + (code & 0x0c);
|
| 3505 |
|
|
else if ((code & 0xf3) == 0x83)
|
| 3506 |
|
|
code = 0x03 + (code & 0x0c);
|
| 3507 |
|
|
else
|
| 3508 |
|
|
abort ();
|
| 3509 |
|
|
|
| 3510 |
|
|
/* Fix the opcode. */
|
| 3511 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
|
| 3512 |
|
|
|
| 3513 |
|
|
/* Fix the relocation's type. */
|
| 3514 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 3515 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
| 3516 |
|
|
== (int) R_MN10300_GOTOFF32)
|
| 3517 |
|
|
? R_MN10300_GOTOFF16
|
| 3518 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
| 3519 |
|
|
== (int) R_MN10300_GOT32)
|
| 3520 |
|
|
? R_MN10300_GOT16
|
| 3521 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
| 3522 |
|
|
== (int) R_MN10300_GOTPC32)
|
| 3523 |
|
|
? R_MN10300_GOTPC16 :
|
| 3524 |
|
|
R_MN10300_16);
|
| 3525 |
|
|
|
| 3526 |
|
|
/* The opcode got shorter too, so we have to fix the
|
| 3527 |
|
|
addend and offset too! */
|
| 3528 |
|
|
irel->r_offset -= 1;
|
| 3529 |
|
|
|
| 3530 |
|
|
/* Delete three bytes of data. */
|
| 3531 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
| 3532 |
|
|
irel->r_offset + 1, 3))
|
| 3533 |
|
|
goto error_return;
|
| 3534 |
|
|
|
| 3535 |
|
|
/* That will change things, so, we should relax again.
|
| 3536 |
|
|
Note that this is not required, and it may be slow. */
|
| 3537 |
|
|
*again = TRUE;
|
| 3538 |
|
|
break;
|
| 3539 |
|
|
|
| 3540 |
|
|
/* mov am,(abs32) -> mov am,(abs16)
|
| 3541 |
|
|
mov am,(d32,sp) -> mov am,(d16,sp)
|
| 3542 |
|
|
mov dm,(d32,sp) -> mov dm,(d32,sp)
|
| 3543 |
|
|
movbu dm,(d32,sp) -> movbu dm,(d32,sp)
|
| 3544 |
|
|
movhu dm,(d32,sp) -> movhu dm,(d32,sp) */
|
| 3545 |
|
|
case 0x80:
|
| 3546 |
|
|
case 0x90:
|
| 3547 |
|
|
case 0x91:
|
| 3548 |
|
|
case 0x92:
|
| 3549 |
|
|
case 0x93:
|
| 3550 |
|
|
/* sp-based offsets are zero-extended. */
|
| 3551 |
|
|
if (code >= 0x90 && code <= 0x93
|
| 3552 |
|
|
&& (long) value < 0)
|
| 3553 |
|
|
continue;
|
| 3554 |
|
|
|
| 3555 |
|
|
/* Note that we've changed the relocation contents, etc. */
|
| 3556 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 3557 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 3558 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 3559 |
|
|
|
| 3560 |
|
|
/* Fix the opcode. */
|
| 3561 |
|
|
bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
|
| 3562 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
|
| 3563 |
|
|
|
| 3564 |
|
|
/* Fix the relocation's type. */
|
| 3565 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 3566 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
| 3567 |
|
|
== (int) R_MN10300_GOTOFF32)
|
| 3568 |
|
|
? R_MN10300_GOTOFF16
|
| 3569 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
| 3570 |
|
|
== (int) R_MN10300_GOT32)
|
| 3571 |
|
|
? R_MN10300_GOT16
|
| 3572 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
| 3573 |
|
|
== (int) R_MN10300_GOTPC32)
|
| 3574 |
|
|
? R_MN10300_GOTPC16 :
|
| 3575 |
|
|
R_MN10300_16);
|
| 3576 |
|
|
|
| 3577 |
|
|
/* Delete two bytes of data. */
|
| 3578 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
| 3579 |
|
|
irel->r_offset + 2, 2))
|
| 3580 |
|
|
goto error_return;
|
| 3581 |
|
|
|
| 3582 |
|
|
/* That will change things, so, we should relax again.
|
| 3583 |
|
|
Note that this is not required, and it may be slow. */
|
| 3584 |
|
|
*again = TRUE;
|
| 3585 |
|
|
break;
|
| 3586 |
|
|
}
|
| 3587 |
|
|
else if ((code & 0xf0) < 0xf0)
|
| 3588 |
|
|
switch (code & 0xfc)
|
| 3589 |
|
|
{
|
| 3590 |
|
|
/* mov imm32,dn -> mov imm16,dn
|
| 3591 |
|
|
mov imm32,an -> mov imm16,an
|
| 3592 |
|
|
mov (abs32),dn -> mov (abs16),dn
|
| 3593 |
|
|
movbu (abs32),dn -> movbu (abs16),dn
|
| 3594 |
|
|
movhu (abs32),dn -> movhu (abs16),dn */
|
| 3595 |
|
|
case 0xcc:
|
| 3596 |
|
|
case 0xdc:
|
| 3597 |
|
|
case 0xa4:
|
| 3598 |
|
|
case 0xa8:
|
| 3599 |
|
|
case 0xac:
|
| 3600 |
|
|
/* Not safe if the high bit is on as relaxing may
|
| 3601 |
|
|
move the value out of high mem and thus not fit
|
| 3602 |
|
|
in a signed 16bit value. */
|
| 3603 |
|
|
if (code == 0xcc
|
| 3604 |
|
|
&& (value & 0x8000))
|
| 3605 |
|
|
continue;
|
| 3606 |
|
|
|
| 3607 |
163 |
khays |
/* "mov imm16, an" zero-extends the immediate. */
|
| 3608 |
|
|
if ((code & 0xfc) == 0xdc
|
| 3609 |
14 |
khays |
&& (long) value < 0)
|
| 3610 |
|
|
continue;
|
| 3611 |
|
|
|
| 3612 |
|
|
/* Note that we've changed the relocation contents, etc. */
|
| 3613 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 3614 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 3615 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 3616 |
|
|
|
| 3617 |
|
|
if ((code & 0xfc) == 0xcc)
|
| 3618 |
|
|
code = 0x2c + (code & 0x03);
|
| 3619 |
|
|
else if ((code & 0xfc) == 0xdc)
|
| 3620 |
|
|
code = 0x24 + (code & 0x03);
|
| 3621 |
|
|
else if ((code & 0xfc) == 0xa4)
|
| 3622 |
|
|
code = 0x30 + (code & 0x03);
|
| 3623 |
|
|
else if ((code & 0xfc) == 0xa8)
|
| 3624 |
|
|
code = 0x34 + (code & 0x03);
|
| 3625 |
|
|
else if ((code & 0xfc) == 0xac)
|
| 3626 |
|
|
code = 0x38 + (code & 0x03);
|
| 3627 |
|
|
else
|
| 3628 |
|
|
abort ();
|
| 3629 |
|
|
|
| 3630 |
|
|
/* Fix the opcode. */
|
| 3631 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
|
| 3632 |
|
|
|
| 3633 |
|
|
/* Fix the relocation's type. */
|
| 3634 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 3635 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
| 3636 |
|
|
== (int) R_MN10300_GOTOFF32)
|
| 3637 |
|
|
? R_MN10300_GOTOFF16
|
| 3638 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
| 3639 |
|
|
== (int) R_MN10300_GOT32)
|
| 3640 |
|
|
? R_MN10300_GOT16
|
| 3641 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
| 3642 |
|
|
== (int) R_MN10300_GOTPC32)
|
| 3643 |
|
|
? R_MN10300_GOTPC16 :
|
| 3644 |
|
|
R_MN10300_16);
|
| 3645 |
|
|
|
| 3646 |
|
|
/* The opcode got shorter too, so we have to fix the
|
| 3647 |
|
|
addend and offset too! */
|
| 3648 |
|
|
irel->r_offset -= 1;
|
| 3649 |
|
|
|
| 3650 |
|
|
/* Delete three bytes of data. */
|
| 3651 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
| 3652 |
|
|
irel->r_offset + 1, 3))
|
| 3653 |
|
|
goto error_return;
|
| 3654 |
|
|
|
| 3655 |
|
|
/* That will change things, so, we should relax again.
|
| 3656 |
|
|
Note that this is not required, and it may be slow. */
|
| 3657 |
|
|
*again = TRUE;
|
| 3658 |
|
|
break;
|
| 3659 |
|
|
|
| 3660 |
|
|
/* mov (abs32),an -> mov (abs16),an
|
| 3661 |
|
|
mov (d32,sp),an -> mov (d16,sp),an
|
| 3662 |
|
|
mov (d32,sp),dn -> mov (d16,sp),dn
|
| 3663 |
|
|
movbu (d32,sp),dn -> movbu (d16,sp),dn
|
| 3664 |
|
|
movhu (d32,sp),dn -> movhu (d16,sp),dn
|
| 3665 |
|
|
add imm32,dn -> add imm16,dn
|
| 3666 |
|
|
cmp imm32,dn -> cmp imm16,dn
|
| 3667 |
|
|
add imm32,an -> add imm16,an
|
| 3668 |
|
|
cmp imm32,an -> cmp imm16,an
|
| 3669 |
|
|
and imm32,dn -> and imm16,dn
|
| 3670 |
|
|
or imm32,dn -> or imm16,dn
|
| 3671 |
|
|
xor imm32,dn -> xor imm16,dn
|
| 3672 |
|
|
btst imm32,dn -> btst imm16,dn */
|
| 3673 |
|
|
|
| 3674 |
|
|
case 0xa0:
|
| 3675 |
|
|
case 0xb0:
|
| 3676 |
|
|
case 0xb1:
|
| 3677 |
|
|
case 0xb2:
|
| 3678 |
|
|
case 0xb3:
|
| 3679 |
|
|
case 0xc0:
|
| 3680 |
|
|
case 0xc8:
|
| 3681 |
|
|
|
| 3682 |
|
|
case 0xd0:
|
| 3683 |
|
|
case 0xd8:
|
| 3684 |
|
|
case 0xe0:
|
| 3685 |
|
|
case 0xe1:
|
| 3686 |
|
|
case 0xe2:
|
| 3687 |
|
|
case 0xe3:
|
| 3688 |
|
|
/* cmp imm16, an zero-extends the immediate. */
|
| 3689 |
|
|
if (code == 0xdc
|
| 3690 |
|
|
&& (long) value < 0)
|
| 3691 |
|
|
continue;
|
| 3692 |
|
|
|
| 3693 |
|
|
/* So do sp-based offsets. */
|
| 3694 |
|
|
if (code >= 0xb0 && code <= 0xb3
|
| 3695 |
|
|
&& (long) value < 0)
|
| 3696 |
|
|
continue;
|
| 3697 |
|
|
|
| 3698 |
|
|
/* Note that we've changed the relocation contents, etc. */
|
| 3699 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 3700 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 3701 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 3702 |
|
|
|
| 3703 |
|
|
/* Fix the opcode. */
|
| 3704 |
|
|
bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
|
| 3705 |
|
|
bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
|
| 3706 |
|
|
|
| 3707 |
|
|
/* Fix the relocation's type. */
|
| 3708 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 3709 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
| 3710 |
|
|
== (int) R_MN10300_GOTOFF32)
|
| 3711 |
|
|
? R_MN10300_GOTOFF16
|
| 3712 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
| 3713 |
|
|
== (int) R_MN10300_GOT32)
|
| 3714 |
|
|
? R_MN10300_GOT16
|
| 3715 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
| 3716 |
|
|
== (int) R_MN10300_GOTPC32)
|
| 3717 |
|
|
? R_MN10300_GOTPC16 :
|
| 3718 |
|
|
R_MN10300_16);
|
| 3719 |
|
|
|
| 3720 |
|
|
/* Delete two bytes of data. */
|
| 3721 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
| 3722 |
|
|
irel->r_offset + 2, 2))
|
| 3723 |
|
|
goto error_return;
|
| 3724 |
|
|
|
| 3725 |
|
|
/* That will change things, so, we should relax again.
|
| 3726 |
|
|
Note that this is not required, and it may be slow. */
|
| 3727 |
|
|
*again = TRUE;
|
| 3728 |
|
|
break;
|
| 3729 |
|
|
}
|
| 3730 |
|
|
else if (code == 0xfe)
|
| 3731 |
|
|
{
|
| 3732 |
|
|
/* add imm32,sp -> add imm16,sp */
|
| 3733 |
|
|
|
| 3734 |
|
|
/* Note that we've changed the relocation contents, etc. */
|
| 3735 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 3736 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 3737 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 3738 |
|
|
|
| 3739 |
|
|
/* Fix the opcode. */
|
| 3740 |
|
|
bfd_put_8 (abfd, 0xfa, contents + irel->r_offset - 2);
|
| 3741 |
|
|
bfd_put_8 (abfd, 0xfe, contents + irel->r_offset - 1);
|
| 3742 |
|
|
|
| 3743 |
|
|
/* Fix the relocation's type. */
|
| 3744 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 3745 |
|
|
(ELF32_R_TYPE (irel->r_info)
|
| 3746 |
|
|
== (int) R_MN10300_GOT32)
|
| 3747 |
|
|
? R_MN10300_GOT16
|
| 3748 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
| 3749 |
|
|
== (int) R_MN10300_GOTOFF32)
|
| 3750 |
|
|
? R_MN10300_GOTOFF16
|
| 3751 |
|
|
: (ELF32_R_TYPE (irel->r_info)
|
| 3752 |
|
|
== (int) R_MN10300_GOTPC32)
|
| 3753 |
|
|
? R_MN10300_GOTPC16 :
|
| 3754 |
|
|
R_MN10300_16);
|
| 3755 |
|
|
|
| 3756 |
|
|
/* Delete two bytes of data. */
|
| 3757 |
|
|
if (!mn10300_elf_relax_delete_bytes (abfd, sec,
|
| 3758 |
|
|
irel->r_offset + 2, 2))
|
| 3759 |
|
|
goto error_return;
|
| 3760 |
|
|
|
| 3761 |
|
|
/* That will change things, so, we should relax again.
|
| 3762 |
|
|
Note that this is not required, and it may be slow. */
|
| 3763 |
|
|
*again = TRUE;
|
| 3764 |
|
|
break;
|
| 3765 |
|
|
}
|
| 3766 |
|
|
}
|
| 3767 |
|
|
}
|
| 3768 |
|
|
}
|
| 3769 |
|
|
|
| 3770 |
|
|
if (isymbuf != NULL
|
| 3771 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
| 3772 |
|
|
{
|
| 3773 |
|
|
if (! link_info->keep_memory)
|
| 3774 |
|
|
free (isymbuf);
|
| 3775 |
|
|
else
|
| 3776 |
|
|
{
|
| 3777 |
|
|
/* Cache the symbols for elf_link_input_bfd. */
|
| 3778 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 3779 |
|
|
}
|
| 3780 |
|
|
}
|
| 3781 |
|
|
|
| 3782 |
|
|
if (contents != NULL
|
| 3783 |
|
|
&& elf_section_data (sec)->this_hdr.contents != contents)
|
| 3784 |
|
|
{
|
| 3785 |
|
|
if (! link_info->keep_memory)
|
| 3786 |
|
|
free (contents);
|
| 3787 |
|
|
else
|
| 3788 |
|
|
{
|
| 3789 |
|
|
/* Cache the section contents for elf_link_input_bfd. */
|
| 3790 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 3791 |
|
|
}
|
| 3792 |
|
|
}
|
| 3793 |
|
|
|
| 3794 |
|
|
if (internal_relocs != NULL
|
| 3795 |
|
|
&& elf_section_data (sec)->relocs != internal_relocs)
|
| 3796 |
|
|
free (internal_relocs);
|
| 3797 |
|
|
|
| 3798 |
|
|
return TRUE;
|
| 3799 |
|
|
|
| 3800 |
|
|
error_return:
|
| 3801 |
|
|
if (isymbuf != NULL
|
| 3802 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
| 3803 |
|
|
free (isymbuf);
|
| 3804 |
|
|
if (contents != NULL
|
| 3805 |
|
|
&& elf_section_data (section)->this_hdr.contents != contents)
|
| 3806 |
|
|
free (contents);
|
| 3807 |
|
|
if (internal_relocs != NULL
|
| 3808 |
|
|
&& elf_section_data (section)->relocs != internal_relocs)
|
| 3809 |
|
|
free (internal_relocs);
|
| 3810 |
|
|
|
| 3811 |
|
|
return FALSE;
|
| 3812 |
|
|
}
|
| 3813 |
|
|
|
| 3814 |
|
|
/* This is a version of bfd_generic_get_relocated_section_contents
|
| 3815 |
|
|
which uses mn10300_elf_relocate_section. */
|
| 3816 |
|
|
|
| 3817 |
|
|
static bfd_byte *
|
| 3818 |
|
|
mn10300_elf_get_relocated_section_contents (bfd *output_bfd,
|
| 3819 |
|
|
struct bfd_link_info *link_info,
|
| 3820 |
|
|
struct bfd_link_order *link_order,
|
| 3821 |
|
|
bfd_byte *data,
|
| 3822 |
|
|
bfd_boolean relocatable,
|
| 3823 |
|
|
asymbol **symbols)
|
| 3824 |
|
|
{
|
| 3825 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 3826 |
|
|
asection *input_section = link_order->u.indirect.section;
|
| 3827 |
|
|
bfd *input_bfd = input_section->owner;
|
| 3828 |
|
|
asection **sections = NULL;
|
| 3829 |
|
|
Elf_Internal_Rela *internal_relocs = NULL;
|
| 3830 |
|
|
Elf_Internal_Sym *isymbuf = NULL;
|
| 3831 |
|
|
|
| 3832 |
|
|
/* We only need to handle the case of relaxing, or of having a
|
| 3833 |
|
|
particular set of section contents, specially. */
|
| 3834 |
|
|
if (relocatable
|
| 3835 |
|
|
|| elf_section_data (input_section)->this_hdr.contents == NULL)
|
| 3836 |
|
|
return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
|
| 3837 |
|
|
link_order, data,
|
| 3838 |
|
|
relocatable,
|
| 3839 |
|
|
symbols);
|
| 3840 |
|
|
|
| 3841 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
| 3842 |
|
|
|
| 3843 |
|
|
memcpy (data, elf_section_data (input_section)->this_hdr.contents,
|
| 3844 |
|
|
(size_t) input_section->size);
|
| 3845 |
|
|
|
| 3846 |
|
|
if ((input_section->flags & SEC_RELOC) != 0
|
| 3847 |
|
|
&& input_section->reloc_count > 0)
|
| 3848 |
|
|
{
|
| 3849 |
|
|
asection **secpp;
|
| 3850 |
|
|
Elf_Internal_Sym *isym, *isymend;
|
| 3851 |
|
|
bfd_size_type amt;
|
| 3852 |
|
|
|
| 3853 |
|
|
internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section,
|
| 3854 |
|
|
NULL, NULL, FALSE);
|
| 3855 |
|
|
if (internal_relocs == NULL)
|
| 3856 |
|
|
goto error_return;
|
| 3857 |
|
|
|
| 3858 |
|
|
if (symtab_hdr->sh_info != 0)
|
| 3859 |
|
|
{
|
| 3860 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 3861 |
|
|
if (isymbuf == NULL)
|
| 3862 |
|
|
isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
|
| 3863 |
|
|
symtab_hdr->sh_info, 0,
|
| 3864 |
|
|
NULL, NULL, NULL);
|
| 3865 |
|
|
if (isymbuf == NULL)
|
| 3866 |
|
|
goto error_return;
|
| 3867 |
|
|
}
|
| 3868 |
|
|
|
| 3869 |
|
|
amt = symtab_hdr->sh_info;
|
| 3870 |
|
|
amt *= sizeof (asection *);
|
| 3871 |
|
|
sections = bfd_malloc (amt);
|
| 3872 |
|
|
if (sections == NULL && amt != 0)
|
| 3873 |
|
|
goto error_return;
|
| 3874 |
|
|
|
| 3875 |
|
|
isymend = isymbuf + symtab_hdr->sh_info;
|
| 3876 |
|
|
for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
|
| 3877 |
|
|
{
|
| 3878 |
|
|
asection *isec;
|
| 3879 |
|
|
|
| 3880 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
| 3881 |
|
|
isec = bfd_und_section_ptr;
|
| 3882 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
| 3883 |
|
|
isec = bfd_abs_section_ptr;
|
| 3884 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
| 3885 |
|
|
isec = bfd_com_section_ptr;
|
| 3886 |
|
|
else
|
| 3887 |
|
|
isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
|
| 3888 |
|
|
|
| 3889 |
|
|
*secpp = isec;
|
| 3890 |
|
|
}
|
| 3891 |
|
|
|
| 3892 |
|
|
if (! mn10300_elf_relocate_section (output_bfd, link_info, input_bfd,
|
| 3893 |
|
|
input_section, data, internal_relocs,
|
| 3894 |
|
|
isymbuf, sections))
|
| 3895 |
|
|
goto error_return;
|
| 3896 |
|
|
|
| 3897 |
|
|
if (sections != NULL)
|
| 3898 |
|
|
free (sections);
|
| 3899 |
|
|
if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
|
| 3900 |
|
|
free (isymbuf);
|
| 3901 |
|
|
if (internal_relocs != elf_section_data (input_section)->relocs)
|
| 3902 |
|
|
free (internal_relocs);
|
| 3903 |
|
|
}
|
| 3904 |
|
|
|
| 3905 |
|
|
return data;
|
| 3906 |
|
|
|
| 3907 |
|
|
error_return:
|
| 3908 |
|
|
if (sections != NULL)
|
| 3909 |
|
|
free (sections);
|
| 3910 |
|
|
if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
|
| 3911 |
|
|
free (isymbuf);
|
| 3912 |
|
|
if (internal_relocs != NULL
|
| 3913 |
|
|
&& internal_relocs != elf_section_data (input_section)->relocs)
|
| 3914 |
|
|
free (internal_relocs);
|
| 3915 |
|
|
return NULL;
|
| 3916 |
|
|
}
|
| 3917 |
|
|
|
| 3918 |
|
|
/* Assorted hash table functions. */
|
| 3919 |
|
|
|
| 3920 |
|
|
/* Initialize an entry in the link hash table. */
|
| 3921 |
|
|
|
| 3922 |
|
|
/* Create an entry in an MN10300 ELF linker hash table. */
|
| 3923 |
|
|
|
| 3924 |
|
|
static struct bfd_hash_entry *
|
| 3925 |
|
|
elf32_mn10300_link_hash_newfunc (struct bfd_hash_entry *entry,
|
| 3926 |
|
|
struct bfd_hash_table *table,
|
| 3927 |
|
|
const char *string)
|
| 3928 |
|
|
{
|
| 3929 |
|
|
struct elf32_mn10300_link_hash_entry *ret =
|
| 3930 |
|
|
(struct elf32_mn10300_link_hash_entry *) entry;
|
| 3931 |
|
|
|
| 3932 |
|
|
/* Allocate the structure if it has not already been allocated by a
|
| 3933 |
|
|
subclass. */
|
| 3934 |
|
|
if (ret == NULL)
|
| 3935 |
|
|
ret = (struct elf32_mn10300_link_hash_entry *)
|
| 3936 |
|
|
bfd_hash_allocate (table, sizeof (* ret));
|
| 3937 |
|
|
if (ret == NULL)
|
| 3938 |
|
|
return (struct bfd_hash_entry *) ret;
|
| 3939 |
|
|
|
| 3940 |
|
|
/* Call the allocation method of the superclass. */
|
| 3941 |
|
|
ret = (struct elf32_mn10300_link_hash_entry *)
|
| 3942 |
|
|
_bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
|
| 3943 |
|
|
table, string);
|
| 3944 |
|
|
if (ret != NULL)
|
| 3945 |
|
|
{
|
| 3946 |
|
|
ret->direct_calls = 0;
|
| 3947 |
|
|
ret->stack_size = 0;
|
| 3948 |
|
|
ret->movm_args = 0;
|
| 3949 |
|
|
ret->movm_stack_size = 0;
|
| 3950 |
|
|
ret->flags = 0;
|
| 3951 |
|
|
ret->value = 0;
|
| 3952 |
|
|
}
|
| 3953 |
|
|
|
| 3954 |
|
|
return (struct bfd_hash_entry *) ret;
|
| 3955 |
|
|
}
|
| 3956 |
|
|
|
| 3957 |
|
|
/* Create an mn10300 ELF linker hash table. */
|
| 3958 |
|
|
|
| 3959 |
|
|
static struct bfd_link_hash_table *
|
| 3960 |
|
|
elf32_mn10300_link_hash_table_create (bfd *abfd)
|
| 3961 |
|
|
{
|
| 3962 |
|
|
struct elf32_mn10300_link_hash_table *ret;
|
| 3963 |
|
|
bfd_size_type amt = sizeof (* ret);
|
| 3964 |
|
|
|
| 3965 |
|
|
ret = bfd_malloc (amt);
|
| 3966 |
|
|
if (ret == NULL)
|
| 3967 |
|
|
return NULL;
|
| 3968 |
|
|
|
| 3969 |
|
|
if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
|
| 3970 |
|
|
elf32_mn10300_link_hash_newfunc,
|
| 3971 |
|
|
sizeof (struct elf32_mn10300_link_hash_entry),
|
| 3972 |
|
|
MN10300_ELF_DATA))
|
| 3973 |
|
|
{
|
| 3974 |
|
|
free (ret);
|
| 3975 |
|
|
return NULL;
|
| 3976 |
|
|
}
|
| 3977 |
|
|
|
| 3978 |
|
|
ret->flags = 0;
|
| 3979 |
|
|
amt = sizeof (struct elf_link_hash_table);
|
| 3980 |
|
|
ret->static_hash_table = bfd_malloc (amt);
|
| 3981 |
|
|
if (ret->static_hash_table == NULL)
|
| 3982 |
|
|
{
|
| 3983 |
|
|
free (ret);
|
| 3984 |
|
|
return NULL;
|
| 3985 |
|
|
}
|
| 3986 |
|
|
|
| 3987 |
|
|
if (!_bfd_elf_link_hash_table_init (&ret->static_hash_table->root, abfd,
|
| 3988 |
|
|
elf32_mn10300_link_hash_newfunc,
|
| 3989 |
|
|
sizeof (struct elf32_mn10300_link_hash_entry),
|
| 3990 |
|
|
MN10300_ELF_DATA))
|
| 3991 |
|
|
{
|
| 3992 |
|
|
free (ret->static_hash_table);
|
| 3993 |
|
|
free (ret);
|
| 3994 |
|
|
return NULL;
|
| 3995 |
|
|
}
|
| 3996 |
|
|
return & ret->root.root;
|
| 3997 |
|
|
}
|
| 3998 |
|
|
|
| 3999 |
|
|
/* Free an mn10300 ELF linker hash table. */
|
| 4000 |
|
|
|
| 4001 |
|
|
static void
|
| 4002 |
|
|
elf32_mn10300_link_hash_table_free (struct bfd_link_hash_table *hash)
|
| 4003 |
|
|
{
|
| 4004 |
|
|
struct elf32_mn10300_link_hash_table *ret
|
| 4005 |
|
|
= (struct elf32_mn10300_link_hash_table *) hash;
|
| 4006 |
|
|
|
| 4007 |
|
|
_bfd_generic_link_hash_table_free
|
| 4008 |
|
|
((struct bfd_link_hash_table *) ret->static_hash_table);
|
| 4009 |
|
|
_bfd_generic_link_hash_table_free
|
| 4010 |
|
|
((struct bfd_link_hash_table *) ret);
|
| 4011 |
|
|
}
|
| 4012 |
|
|
|
| 4013 |
|
|
static unsigned long
|
| 4014 |
|
|
elf_mn10300_mach (flagword flags)
|
| 4015 |
|
|
{
|
| 4016 |
|
|
switch (flags & EF_MN10300_MACH)
|
| 4017 |
|
|
{
|
| 4018 |
|
|
case E_MN10300_MACH_MN10300:
|
| 4019 |
|
|
default:
|
| 4020 |
|
|
return bfd_mach_mn10300;
|
| 4021 |
|
|
|
| 4022 |
|
|
case E_MN10300_MACH_AM33:
|
| 4023 |
|
|
return bfd_mach_am33;
|
| 4024 |
|
|
|
| 4025 |
|
|
case E_MN10300_MACH_AM33_2:
|
| 4026 |
|
|
return bfd_mach_am33_2;
|
| 4027 |
|
|
}
|
| 4028 |
|
|
}
|
| 4029 |
|
|
|
| 4030 |
|
|
/* The final processing done just before writing out a MN10300 ELF object
|
| 4031 |
|
|
file. This gets the MN10300 architecture right based on the machine
|
| 4032 |
|
|
number. */
|
| 4033 |
|
|
|
| 4034 |
|
|
static void
|
| 4035 |
|
|
_bfd_mn10300_elf_final_write_processing (bfd *abfd,
|
| 4036 |
|
|
bfd_boolean linker ATTRIBUTE_UNUSED)
|
| 4037 |
|
|
{
|
| 4038 |
|
|
unsigned long val;
|
| 4039 |
|
|
|
| 4040 |
|
|
switch (bfd_get_mach (abfd))
|
| 4041 |
|
|
{
|
| 4042 |
|
|
default:
|
| 4043 |
|
|
case bfd_mach_mn10300:
|
| 4044 |
|
|
val = E_MN10300_MACH_MN10300;
|
| 4045 |
|
|
break;
|
| 4046 |
|
|
|
| 4047 |
|
|
case bfd_mach_am33:
|
| 4048 |
|
|
val = E_MN10300_MACH_AM33;
|
| 4049 |
|
|
break;
|
| 4050 |
|
|
|
| 4051 |
|
|
case bfd_mach_am33_2:
|
| 4052 |
|
|
val = E_MN10300_MACH_AM33_2;
|
| 4053 |
|
|
break;
|
| 4054 |
|
|
}
|
| 4055 |
|
|
|
| 4056 |
|
|
elf_elfheader (abfd)->e_flags &= ~ (EF_MN10300_MACH);
|
| 4057 |
|
|
elf_elfheader (abfd)->e_flags |= val;
|
| 4058 |
|
|
}
|
| 4059 |
|
|
|
| 4060 |
|
|
static bfd_boolean
|
| 4061 |
|
|
_bfd_mn10300_elf_object_p (bfd *abfd)
|
| 4062 |
|
|
{
|
| 4063 |
|
|
bfd_default_set_arch_mach (abfd, bfd_arch_mn10300,
|
| 4064 |
|
|
elf_mn10300_mach (elf_elfheader (abfd)->e_flags));
|
| 4065 |
|
|
return TRUE;
|
| 4066 |
|
|
}
|
| 4067 |
|
|
|
| 4068 |
|
|
/* Merge backend specific data from an object file to the output
|
| 4069 |
|
|
object file when linking. */
|
| 4070 |
|
|
|
| 4071 |
|
|
static bfd_boolean
|
| 4072 |
|
|
_bfd_mn10300_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
|
| 4073 |
|
|
{
|
| 4074 |
|
|
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
| 4075 |
|
|
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
| 4076 |
|
|
return TRUE;
|
| 4077 |
|
|
|
| 4078 |
|
|
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
|
| 4079 |
|
|
&& bfd_get_mach (obfd) < bfd_get_mach (ibfd))
|
| 4080 |
|
|
{
|
| 4081 |
|
|
if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
|
| 4082 |
|
|
bfd_get_mach (ibfd)))
|
| 4083 |
|
|
return FALSE;
|
| 4084 |
|
|
}
|
| 4085 |
|
|
|
| 4086 |
|
|
return TRUE;
|
| 4087 |
|
|
}
|
| 4088 |
|
|
|
| 4089 |
|
|
#define PLT0_ENTRY_SIZE 15
|
| 4090 |
|
|
#define PLT_ENTRY_SIZE 20
|
| 4091 |
|
|
#define PIC_PLT_ENTRY_SIZE 24
|
| 4092 |
|
|
|
| 4093 |
|
|
static const bfd_byte elf_mn10300_plt0_entry[PLT0_ENTRY_SIZE] =
|
| 4094 |
|
|
{
|
| 4095 |
|
|
0xfc, 0xa0, 0, 0, 0, 0, /* mov (.got+8),a0 */
|
| 4096 |
|
|
0xfe, 0xe, 0x10, 0, 0, 0, 0, /* mov (.got+4),r1 */
|
| 4097 |
|
|
0xf0, 0xf4, /* jmp (a0) */
|
| 4098 |
|
|
};
|
| 4099 |
|
|
|
| 4100 |
|
|
static const bfd_byte elf_mn10300_plt_entry[PLT_ENTRY_SIZE] =
|
| 4101 |
|
|
{
|
| 4102 |
|
|
0xfc, 0xa0, 0, 0, 0, 0, /* mov (nameN@GOT + .got),a0 */
|
| 4103 |
|
|
0xf0, 0xf4, /* jmp (a0) */
|
| 4104 |
|
|
0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
|
| 4105 |
|
|
0xdc, 0, 0, 0, 0, /* jmp .plt0 */
|
| 4106 |
|
|
};
|
| 4107 |
|
|
|
| 4108 |
|
|
static const bfd_byte elf_mn10300_pic_plt_entry[PIC_PLT_ENTRY_SIZE] =
|
| 4109 |
|
|
{
|
| 4110 |
|
|
0xfc, 0x22, 0, 0, 0, 0, /* mov (nameN@GOT,a2),a0 */
|
| 4111 |
|
|
0xf0, 0xf4, /* jmp (a0) */
|
| 4112 |
|
|
0xfe, 8, 0, 0, 0, 0, 0, /* mov reloc-table-address,r0 */
|
| 4113 |
|
|
0xf8, 0x22, 8, /* mov (8,a2),a0 */
|
| 4114 |
|
|
0xfb, 0xa, 0x1a, 4, /* mov (4,a2),r1 */
|
| 4115 |
|
|
0xf0, 0xf4, /* jmp (a0) */
|
| 4116 |
|
|
};
|
| 4117 |
|
|
|
| 4118 |
|
|
/* Return size of the first PLT entry. */
|
| 4119 |
|
|
#define elf_mn10300_sizeof_plt0(info) \
|
| 4120 |
|
|
(info->shared ? PIC_PLT_ENTRY_SIZE : PLT0_ENTRY_SIZE)
|
| 4121 |
|
|
|
| 4122 |
|
|
/* Return size of a PLT entry. */
|
| 4123 |
|
|
#define elf_mn10300_sizeof_plt(info) \
|
| 4124 |
|
|
(info->shared ? PIC_PLT_ENTRY_SIZE : PLT_ENTRY_SIZE)
|
| 4125 |
|
|
|
| 4126 |
|
|
/* Return offset of the PLT0 address in an absolute PLT entry. */
|
| 4127 |
|
|
#define elf_mn10300_plt_plt0_offset(info) 16
|
| 4128 |
|
|
|
| 4129 |
|
|
/* Return offset of the linker in PLT0 entry. */
|
| 4130 |
|
|
#define elf_mn10300_plt0_linker_offset(info) 2
|
| 4131 |
|
|
|
| 4132 |
|
|
/* Return offset of the GOT id in PLT0 entry. */
|
| 4133 |
|
|
#define elf_mn10300_plt0_gotid_offset(info) 9
|
| 4134 |
|
|
|
| 4135 |
|
|
/* Return offset of the temporary in PLT entry. */
|
| 4136 |
|
|
#define elf_mn10300_plt_temp_offset(info) 8
|
| 4137 |
|
|
|
| 4138 |
|
|
/* Return offset of the symbol in PLT entry. */
|
| 4139 |
|
|
#define elf_mn10300_plt_symbol_offset(info) 2
|
| 4140 |
|
|
|
| 4141 |
|
|
/* Return offset of the relocation in PLT entry. */
|
| 4142 |
|
|
#define elf_mn10300_plt_reloc_offset(info) 11
|
| 4143 |
|
|
|
| 4144 |
|
|
/* The name of the dynamic interpreter. This is put in the .interp
|
| 4145 |
|
|
section. */
|
| 4146 |
|
|
|
| 4147 |
|
|
#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
|
| 4148 |
|
|
|
| 4149 |
|
|
/* Create dynamic sections when linking against a dynamic object. */
|
| 4150 |
|
|
|
| 4151 |
|
|
static bfd_boolean
|
| 4152 |
|
|
_bfd_mn10300_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
|
| 4153 |
|
|
{
|
| 4154 |
|
|
flagword flags;
|
| 4155 |
|
|
asection * s;
|
| 4156 |
|
|
const struct elf_backend_data * bed = get_elf_backend_data (abfd);
|
| 4157 |
|
|
int ptralign = 0;
|
| 4158 |
|
|
|
| 4159 |
|
|
switch (bed->s->arch_size)
|
| 4160 |
|
|
{
|
| 4161 |
|
|
case 32:
|
| 4162 |
|
|
ptralign = 2;
|
| 4163 |
|
|
break;
|
| 4164 |
|
|
|
| 4165 |
|
|
case 64:
|
| 4166 |
|
|
ptralign = 3;
|
| 4167 |
|
|
break;
|
| 4168 |
|
|
|
| 4169 |
|
|
default:
|
| 4170 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 4171 |
|
|
return FALSE;
|
| 4172 |
|
|
}
|
| 4173 |
|
|
|
| 4174 |
|
|
/* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
|
| 4175 |
|
|
.rel[a].bss sections. */
|
| 4176 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
|
| 4177 |
|
|
| SEC_LINKER_CREATED);
|
| 4178 |
|
|
|
| 4179 |
|
|
s = bfd_make_section_with_flags (abfd,
|
| 4180 |
|
|
(bed->default_use_rela_p
|
| 4181 |
|
|
? ".rela.plt" : ".rel.plt"),
|
| 4182 |
|
|
flags | SEC_READONLY);
|
| 4183 |
|
|
if (s == NULL
|
| 4184 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
| 4185 |
|
|
return FALSE;
|
| 4186 |
|
|
|
| 4187 |
|
|
if (! _bfd_mn10300_elf_create_got_section (abfd, info))
|
| 4188 |
|
|
return FALSE;
|
| 4189 |
|
|
|
| 4190 |
|
|
{
|
| 4191 |
|
|
const char * secname;
|
| 4192 |
|
|
char * relname;
|
| 4193 |
|
|
flagword secflags;
|
| 4194 |
|
|
asection * sec;
|
| 4195 |
|
|
|
| 4196 |
|
|
for (sec = abfd->sections; sec; sec = sec->next)
|
| 4197 |
|
|
{
|
| 4198 |
|
|
secflags = bfd_get_section_flags (abfd, sec);
|
| 4199 |
|
|
if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
|
| 4200 |
|
|
|| ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
|
| 4201 |
|
|
continue;
|
| 4202 |
|
|
|
| 4203 |
|
|
secname = bfd_get_section_name (abfd, sec);
|
| 4204 |
|
|
relname = bfd_malloc (strlen (secname) + 6);
|
| 4205 |
|
|
strcpy (relname, ".rela");
|
| 4206 |
|
|
strcat (relname, secname);
|
| 4207 |
|
|
|
| 4208 |
|
|
s = bfd_make_section_with_flags (abfd, relname,
|
| 4209 |
|
|
flags | SEC_READONLY);
|
| 4210 |
|
|
if (s == NULL
|
| 4211 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
| 4212 |
|
|
return FALSE;
|
| 4213 |
|
|
}
|
| 4214 |
|
|
}
|
| 4215 |
|
|
|
| 4216 |
|
|
if (bed->want_dynbss)
|
| 4217 |
|
|
{
|
| 4218 |
|
|
/* The .dynbss section is a place to put symbols which are defined
|
| 4219 |
|
|
by dynamic objects, are referenced by regular objects, and are
|
| 4220 |
|
|
not functions. We must allocate space for them in the process
|
| 4221 |
|
|
image and use a R_*_COPY reloc to tell the dynamic linker to
|
| 4222 |
|
|
initialize them at run time. The linker script puts the .dynbss
|
| 4223 |
|
|
section into the .bss section of the final image. */
|
| 4224 |
|
|
s = bfd_make_section_with_flags (abfd, ".dynbss",
|
| 4225 |
|
|
SEC_ALLOC | SEC_LINKER_CREATED);
|
| 4226 |
|
|
if (s == NULL)
|
| 4227 |
|
|
return FALSE;
|
| 4228 |
|
|
|
| 4229 |
|
|
/* The .rel[a].bss section holds copy relocs. This section is not
|
| 4230 |
|
|
normally needed. We need to create it here, though, so that the
|
| 4231 |
|
|
linker will map it to an output section. We can't just create it
|
| 4232 |
|
|
only if we need it, because we will not know whether we need it
|
| 4233 |
|
|
until we have seen all the input files, and the first time the
|
| 4234 |
|
|
main linker code calls BFD after examining all the input files
|
| 4235 |
|
|
(size_dynamic_sections) the input sections have already been
|
| 4236 |
|
|
mapped to the output sections. If the section turns out not to
|
| 4237 |
|
|
be needed, we can discard it later. We will never need this
|
| 4238 |
|
|
section when generating a shared object, since they do not use
|
| 4239 |
|
|
copy relocs. */
|
| 4240 |
|
|
if (! info->shared)
|
| 4241 |
|
|
{
|
| 4242 |
|
|
s = bfd_make_section_with_flags (abfd,
|
| 4243 |
|
|
(bed->default_use_rela_p
|
| 4244 |
|
|
? ".rela.bss" : ".rel.bss"),
|
| 4245 |
|
|
flags | SEC_READONLY);
|
| 4246 |
|
|
if (s == NULL
|
| 4247 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
| 4248 |
|
|
return FALSE;
|
| 4249 |
|
|
}
|
| 4250 |
|
|
}
|
| 4251 |
|
|
|
| 4252 |
|
|
return TRUE;
|
| 4253 |
|
|
}
|
| 4254 |
|
|
|
| 4255 |
|
|
/* Adjust a symbol defined by a dynamic object and referenced by a
|
| 4256 |
|
|
regular object. The current definition is in some section of the
|
| 4257 |
|
|
dynamic object, but we're not including those sections. We have to
|
| 4258 |
|
|
change the definition to something the rest of the link can
|
| 4259 |
|
|
understand. */
|
| 4260 |
|
|
|
| 4261 |
|
|
static bfd_boolean
|
| 4262 |
|
|
_bfd_mn10300_elf_adjust_dynamic_symbol (struct bfd_link_info * info,
|
| 4263 |
|
|
struct elf_link_hash_entry * h)
|
| 4264 |
|
|
{
|
| 4265 |
|
|
bfd * dynobj;
|
| 4266 |
|
|
asection * s;
|
| 4267 |
|
|
|
| 4268 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 4269 |
|
|
|
| 4270 |
|
|
/* Make sure we know what is going on here. */
|
| 4271 |
|
|
BFD_ASSERT (dynobj != NULL
|
| 4272 |
|
|
&& (h->needs_plt
|
| 4273 |
|
|
|| h->u.weakdef != NULL
|
| 4274 |
|
|
|| (h->def_dynamic
|
| 4275 |
|
|
&& h->ref_regular
|
| 4276 |
|
|
&& !h->def_regular)));
|
| 4277 |
|
|
|
| 4278 |
|
|
/* If this is a function, put it in the procedure linkage table. We
|
| 4279 |
|
|
will fill in the contents of the procedure linkage table later,
|
| 4280 |
|
|
when we know the address of the .got section. */
|
| 4281 |
|
|
if (h->type == STT_FUNC
|
| 4282 |
|
|
|| h->needs_plt)
|
| 4283 |
|
|
{
|
| 4284 |
|
|
if (! info->shared
|
| 4285 |
|
|
&& !h->def_dynamic
|
| 4286 |
|
|
&& !h->ref_dynamic)
|
| 4287 |
|
|
{
|
| 4288 |
|
|
/* This case can occur if we saw a PLT reloc in an input
|
| 4289 |
|
|
file, but the symbol was never referred to by a dynamic
|
| 4290 |
|
|
object. In such a case, we don't actually need to build
|
| 4291 |
|
|
a procedure linkage table, and we can just do a REL32
|
| 4292 |
|
|
reloc instead. */
|
| 4293 |
|
|
BFD_ASSERT (h->needs_plt);
|
| 4294 |
|
|
return TRUE;
|
| 4295 |
|
|
}
|
| 4296 |
|
|
|
| 4297 |
|
|
/* Make sure this symbol is output as a dynamic symbol. */
|
| 4298 |
|
|
if (h->dynindx == -1)
|
| 4299 |
|
|
{
|
| 4300 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 4301 |
|
|
return FALSE;
|
| 4302 |
|
|
}
|
| 4303 |
|
|
|
| 4304 |
|
|
s = bfd_get_section_by_name (dynobj, ".plt");
|
| 4305 |
|
|
BFD_ASSERT (s != NULL);
|
| 4306 |
|
|
|
| 4307 |
|
|
/* If this is the first .plt entry, make room for the special
|
| 4308 |
|
|
first entry. */
|
| 4309 |
|
|
if (s->size == 0)
|
| 4310 |
|
|
s->size += elf_mn10300_sizeof_plt0 (info);
|
| 4311 |
|
|
|
| 4312 |
|
|
/* If this symbol is not defined in a regular file, and we are
|
| 4313 |
|
|
not generating a shared library, then set the symbol to this
|
| 4314 |
|
|
location in the .plt. This is required to make function
|
| 4315 |
|
|
pointers compare as equal between the normal executable and
|
| 4316 |
|
|
the shared library. */
|
| 4317 |
|
|
if (! info->shared
|
| 4318 |
|
|
&& !h->def_regular)
|
| 4319 |
|
|
{
|
| 4320 |
|
|
h->root.u.def.section = s;
|
| 4321 |
|
|
h->root.u.def.value = s->size;
|
| 4322 |
|
|
}
|
| 4323 |
|
|
|
| 4324 |
|
|
h->plt.offset = s->size;
|
| 4325 |
|
|
|
| 4326 |
|
|
/* Make room for this entry. */
|
| 4327 |
|
|
s->size += elf_mn10300_sizeof_plt (info);
|
| 4328 |
|
|
|
| 4329 |
|
|
/* We also need to make an entry in the .got.plt section, which
|
| 4330 |
|
|
will be placed in the .got section by the linker script. */
|
| 4331 |
|
|
s = bfd_get_section_by_name (dynobj, ".got.plt");
|
| 4332 |
|
|
BFD_ASSERT (s != NULL);
|
| 4333 |
|
|
s->size += 4;
|
| 4334 |
|
|
|
| 4335 |
|
|
/* We also need to make an entry in the .rela.plt section. */
|
| 4336 |
|
|
s = bfd_get_section_by_name (dynobj, ".rela.plt");
|
| 4337 |
|
|
BFD_ASSERT (s != NULL);
|
| 4338 |
|
|
s->size += sizeof (Elf32_External_Rela);
|
| 4339 |
|
|
|
| 4340 |
|
|
return TRUE;
|
| 4341 |
|
|
}
|
| 4342 |
|
|
|
| 4343 |
|
|
/* If this is a weak symbol, and there is a real definition, the
|
| 4344 |
|
|
processor independent code will have arranged for us to see the
|
| 4345 |
|
|
real definition first, and we can just use the same value. */
|
| 4346 |
|
|
if (h->u.weakdef != NULL)
|
| 4347 |
|
|
{
|
| 4348 |
|
|
BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
|
| 4349 |
|
|
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
|
| 4350 |
|
|
h->root.u.def.section = h->u.weakdef->root.u.def.section;
|
| 4351 |
|
|
h->root.u.def.value = h->u.weakdef->root.u.def.value;
|
| 4352 |
|
|
return TRUE;
|
| 4353 |
|
|
}
|
| 4354 |
|
|
|
| 4355 |
|
|
/* This is a reference to a symbol defined by a dynamic object which
|
| 4356 |
|
|
is not a function. */
|
| 4357 |
|
|
|
| 4358 |
|
|
/* If we are creating a shared library, we must presume that the
|
| 4359 |
|
|
only references to the symbol are via the global offset table.
|
| 4360 |
|
|
For such cases we need not do anything here; the relocations will
|
| 4361 |
|
|
be handled correctly by relocate_section. */
|
| 4362 |
|
|
if (info->shared)
|
| 4363 |
|
|
return TRUE;
|
| 4364 |
|
|
|
| 4365 |
|
|
/* If there are no references to this symbol that do not use the
|
| 4366 |
|
|
GOT, we don't need to generate a copy reloc. */
|
| 4367 |
|
|
if (!h->non_got_ref)
|
| 4368 |
|
|
return TRUE;
|
| 4369 |
|
|
|
| 4370 |
|
|
if (h->size == 0)
|
| 4371 |
|
|
{
|
| 4372 |
|
|
(*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
|
| 4373 |
|
|
h->root.root.string);
|
| 4374 |
|
|
return TRUE;
|
| 4375 |
|
|
}
|
| 4376 |
|
|
|
| 4377 |
|
|
/* We must allocate the symbol in our .dynbss section, which will
|
| 4378 |
|
|
become part of the .bss section of the executable. There will be
|
| 4379 |
|
|
an entry for this symbol in the .dynsym section. The dynamic
|
| 4380 |
|
|
object will contain position independent code, so all references
|
| 4381 |
|
|
from the dynamic object to this symbol will go through the global
|
| 4382 |
|
|
offset table. The dynamic linker will use the .dynsym entry to
|
| 4383 |
|
|
determine the address it must put in the global offset table, so
|
| 4384 |
|
|
both the dynamic object and the regular object will refer to the
|
| 4385 |
|
|
same memory location for the variable. */
|
| 4386 |
|
|
|
| 4387 |
|
|
s = bfd_get_section_by_name (dynobj, ".dynbss");
|
| 4388 |
|
|
BFD_ASSERT (s != NULL);
|
| 4389 |
|
|
|
| 4390 |
|
|
/* We must generate a R_MN10300_COPY reloc to tell the dynamic linker to
|
| 4391 |
|
|
copy the initial value out of the dynamic object and into the
|
| 4392 |
|
|
runtime process image. We need to remember the offset into the
|
| 4393 |
|
|
.rela.bss section we are going to use. */
|
| 4394 |
|
|
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
| 4395 |
|
|
{
|
| 4396 |
|
|
asection * srel;
|
| 4397 |
|
|
|
| 4398 |
|
|
srel = bfd_get_section_by_name (dynobj, ".rela.bss");
|
| 4399 |
|
|
BFD_ASSERT (srel != NULL);
|
| 4400 |
|
|
srel->size += sizeof (Elf32_External_Rela);
|
| 4401 |
|
|
h->needs_copy = 1;
|
| 4402 |
|
|
}
|
| 4403 |
|
|
|
| 4404 |
|
|
return _bfd_elf_adjust_dynamic_copy (h, s);
|
| 4405 |
|
|
}
|
| 4406 |
|
|
|
| 4407 |
|
|
/* Set the sizes of the dynamic sections. */
|
| 4408 |
|
|
|
| 4409 |
|
|
static bfd_boolean
|
| 4410 |
|
|
_bfd_mn10300_elf_size_dynamic_sections (bfd * output_bfd,
|
| 4411 |
|
|
struct bfd_link_info * info)
|
| 4412 |
|
|
{
|
| 4413 |
|
|
bfd * dynobj;
|
| 4414 |
|
|
asection * s;
|
| 4415 |
|
|
bfd_boolean plt;
|
| 4416 |
|
|
bfd_boolean relocs;
|
| 4417 |
|
|
bfd_boolean reltext;
|
| 4418 |
|
|
|
| 4419 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 4420 |
|
|
BFD_ASSERT (dynobj != NULL);
|
| 4421 |
|
|
|
| 4422 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
| 4423 |
|
|
{
|
| 4424 |
|
|
/* Set the contents of the .interp section to the interpreter. */
|
| 4425 |
|
|
if (info->executable)
|
| 4426 |
|
|
{
|
| 4427 |
|
|
s = bfd_get_section_by_name (dynobj, ".interp");
|
| 4428 |
|
|
BFD_ASSERT (s != NULL);
|
| 4429 |
|
|
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
|
| 4430 |
|
|
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
|
| 4431 |
|
|
}
|
| 4432 |
|
|
}
|
| 4433 |
|
|
else
|
| 4434 |
|
|
{
|
| 4435 |
|
|
/* We may have created entries in the .rela.got section.
|
| 4436 |
|
|
However, if we are not creating the dynamic sections, we will
|
| 4437 |
|
|
not actually use these entries. Reset the size of .rela.got,
|
| 4438 |
|
|
which will cause it to get stripped from the output file
|
| 4439 |
|
|
below. */
|
| 4440 |
|
|
s = bfd_get_section_by_name (dynobj, ".rela.got");
|
| 4441 |
|
|
if (s != NULL)
|
| 4442 |
|
|
s->size = 0;
|
| 4443 |
|
|
}
|
| 4444 |
|
|
|
| 4445 |
|
|
/* The check_relocs and adjust_dynamic_symbol entry points have
|
| 4446 |
|
|
determined the sizes of the various dynamic sections. Allocate
|
| 4447 |
|
|
memory for them. */
|
| 4448 |
|
|
plt = FALSE;
|
| 4449 |
|
|
relocs = FALSE;
|
| 4450 |
|
|
reltext = FALSE;
|
| 4451 |
|
|
for (s = dynobj->sections; s != NULL; s = s->next)
|
| 4452 |
|
|
{
|
| 4453 |
|
|
const char * name;
|
| 4454 |
|
|
|
| 4455 |
|
|
if ((s->flags & SEC_LINKER_CREATED) == 0)
|
| 4456 |
|
|
continue;
|
| 4457 |
|
|
|
| 4458 |
|
|
/* It's OK to base decisions on the section name, because none
|
| 4459 |
|
|
of the dynobj section names depend upon the input files. */
|
| 4460 |
|
|
name = bfd_get_section_name (dynobj, s);
|
| 4461 |
|
|
|
| 4462 |
|
|
if (streq (name, ".plt"))
|
| 4463 |
|
|
{
|
| 4464 |
|
|
/* Remember whether there is a PLT. */
|
| 4465 |
|
|
plt = s->size != 0;
|
| 4466 |
|
|
}
|
| 4467 |
|
|
else if (CONST_STRNEQ (name, ".rela"))
|
| 4468 |
|
|
{
|
| 4469 |
|
|
if (s->size != 0)
|
| 4470 |
|
|
{
|
| 4471 |
|
|
asection * target;
|
| 4472 |
|
|
|
| 4473 |
|
|
/* Remember whether there are any reloc sections other
|
| 4474 |
|
|
than .rela.plt. */
|
| 4475 |
|
|
if (! streq (name, ".rela.plt"))
|
| 4476 |
|
|
{
|
| 4477 |
|
|
const char * outname;
|
| 4478 |
|
|
|
| 4479 |
|
|
relocs = TRUE;
|
| 4480 |
|
|
|
| 4481 |
|
|
/* If this relocation section applies to a read only
|
| 4482 |
|
|
section, then we probably need a DT_TEXTREL
|
| 4483 |
|
|
entry. The entries in the .rela.plt section
|
| 4484 |
|
|
really apply to the .got section, which we
|
| 4485 |
|
|
created ourselves and so know is not readonly. */
|
| 4486 |
|
|
outname = bfd_get_section_name (output_bfd,
|
| 4487 |
|
|
s->output_section);
|
| 4488 |
|
|
target = bfd_get_section_by_name (output_bfd, outname + 5);
|
| 4489 |
|
|
if (target != NULL
|
| 4490 |
|
|
&& (target->flags & SEC_READONLY) != 0
|
| 4491 |
|
|
&& (target->flags & SEC_ALLOC) != 0)
|
| 4492 |
|
|
reltext = TRUE;
|
| 4493 |
|
|
}
|
| 4494 |
|
|
|
| 4495 |
|
|
/* We use the reloc_count field as a counter if we need
|
| 4496 |
|
|
to copy relocs into the output file. */
|
| 4497 |
|
|
s->reloc_count = 0;
|
| 4498 |
|
|
}
|
| 4499 |
|
|
}
|
| 4500 |
|
|
else if (! CONST_STRNEQ (name, ".got")
|
| 4501 |
|
|
&& ! streq (name, ".dynbss"))
|
| 4502 |
|
|
/* It's not one of our sections, so don't allocate space. */
|
| 4503 |
|
|
continue;
|
| 4504 |
|
|
|
| 4505 |
|
|
if (s->size == 0)
|
| 4506 |
|
|
{
|
| 4507 |
|
|
/* If we don't need this section, strip it from the
|
| 4508 |
|
|
output file. This is mostly to handle .rela.bss and
|
| 4509 |
|
|
.rela.plt. We must create both sections in
|
| 4510 |
|
|
create_dynamic_sections, because they must be created
|
| 4511 |
|
|
before the linker maps input sections to output
|
| 4512 |
|
|
sections. The linker does that before
|
| 4513 |
|
|
adjust_dynamic_symbol is called, and it is that
|
| 4514 |
|
|
function which decides whether anything needs to go
|
| 4515 |
|
|
into these sections. */
|
| 4516 |
|
|
s->flags |= SEC_EXCLUDE;
|
| 4517 |
|
|
continue;
|
| 4518 |
|
|
}
|
| 4519 |
|
|
|
| 4520 |
|
|
if ((s->flags & SEC_HAS_CONTENTS) == 0)
|
| 4521 |
|
|
continue;
|
| 4522 |
|
|
|
| 4523 |
|
|
/* Allocate memory for the section contents. We use bfd_zalloc
|
| 4524 |
|
|
here in case unused entries are not reclaimed before the
|
| 4525 |
|
|
section's contents are written out. This should not happen,
|
| 4526 |
|
|
but this way if it does, we get a R_MN10300_NONE reloc
|
| 4527 |
|
|
instead of garbage. */
|
| 4528 |
|
|
s->contents = bfd_zalloc (dynobj, s->size);
|
| 4529 |
|
|
if (s->contents == NULL)
|
| 4530 |
|
|
return FALSE;
|
| 4531 |
|
|
}
|
| 4532 |
|
|
|
| 4533 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
| 4534 |
|
|
{
|
| 4535 |
|
|
/* Add some entries to the .dynamic section. We fill in the
|
| 4536 |
|
|
values later, in _bfd_mn10300_elf_finish_dynamic_sections,
|
| 4537 |
|
|
but we must add the entries now so that we get the correct
|
| 4538 |
|
|
size for the .dynamic section. The DT_DEBUG entry is filled
|
| 4539 |
|
|
in by the dynamic linker and used by the debugger. */
|
| 4540 |
|
|
if (! info->shared)
|
| 4541 |
|
|
{
|
| 4542 |
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0))
|
| 4543 |
|
|
return FALSE;
|
| 4544 |
|
|
}
|
| 4545 |
|
|
|
| 4546 |
|
|
if (plt)
|
| 4547 |
|
|
{
|
| 4548 |
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
|
| 4549 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
|
| 4550 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
|
| 4551 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
|
| 4552 |
|
|
return FALSE;
|
| 4553 |
|
|
}
|
| 4554 |
|
|
|
| 4555 |
|
|
if (relocs)
|
| 4556 |
|
|
{
|
| 4557 |
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
|
| 4558 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
|
| 4559 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_RELAENT,
|
| 4560 |
|
|
sizeof (Elf32_External_Rela)))
|
| 4561 |
|
|
return FALSE;
|
| 4562 |
|
|
}
|
| 4563 |
|
|
|
| 4564 |
|
|
if (reltext)
|
| 4565 |
|
|
{
|
| 4566 |
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
|
| 4567 |
|
|
return FALSE;
|
| 4568 |
|
|
}
|
| 4569 |
|
|
}
|
| 4570 |
|
|
|
| 4571 |
|
|
return TRUE;
|
| 4572 |
|
|
}
|
| 4573 |
|
|
|
| 4574 |
|
|
/* Finish up dynamic symbol handling. We set the contents of various
|
| 4575 |
|
|
dynamic sections here. */
|
| 4576 |
|
|
|
| 4577 |
|
|
static bfd_boolean
|
| 4578 |
|
|
_bfd_mn10300_elf_finish_dynamic_symbol (bfd * output_bfd,
|
| 4579 |
|
|
struct bfd_link_info * info,
|
| 4580 |
|
|
struct elf_link_hash_entry * h,
|
| 4581 |
|
|
Elf_Internal_Sym * sym)
|
| 4582 |
|
|
{
|
| 4583 |
|
|
bfd * dynobj;
|
| 4584 |
|
|
|
| 4585 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 4586 |
|
|
|
| 4587 |
|
|
if (h->plt.offset != (bfd_vma) -1)
|
| 4588 |
|
|
{
|
| 4589 |
|
|
asection * splt;
|
| 4590 |
|
|
asection * sgot;
|
| 4591 |
|
|
asection * srel;
|
| 4592 |
|
|
bfd_vma plt_index;
|
| 4593 |
|
|
bfd_vma got_offset;
|
| 4594 |
|
|
Elf_Internal_Rela rel;
|
| 4595 |
|
|
|
| 4596 |
|
|
/* This symbol has an entry in the procedure linkage table. Set
|
| 4597 |
|
|
it up. */
|
| 4598 |
|
|
|
| 4599 |
|
|
BFD_ASSERT (h->dynindx != -1);
|
| 4600 |
|
|
|
| 4601 |
|
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
| 4602 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got.plt");
|
| 4603 |
|
|
srel = bfd_get_section_by_name (dynobj, ".rela.plt");
|
| 4604 |
|
|
BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
|
| 4605 |
|
|
|
| 4606 |
|
|
/* Get the index in the procedure linkage table which
|
| 4607 |
|
|
corresponds to this symbol. This is the index of this symbol
|
| 4608 |
|
|
in all the symbols for which we are making plt entries. The
|
| 4609 |
|
|
first entry in the procedure linkage table is reserved. */
|
| 4610 |
|
|
plt_index = ((h->plt.offset - elf_mn10300_sizeof_plt0 (info))
|
| 4611 |
|
|
/ elf_mn10300_sizeof_plt (info));
|
| 4612 |
|
|
|
| 4613 |
|
|
/* Get the offset into the .got table of the entry that
|
| 4614 |
|
|
corresponds to this function. Each .got entry is 4 bytes.
|
| 4615 |
|
|
The first three are reserved. */
|
| 4616 |
|
|
got_offset = (plt_index + 3) * 4;
|
| 4617 |
|
|
|
| 4618 |
|
|
/* Fill in the entry in the procedure linkage table. */
|
| 4619 |
|
|
if (! info->shared)
|
| 4620 |
|
|
{
|
| 4621 |
|
|
memcpy (splt->contents + h->plt.offset, elf_mn10300_plt_entry,
|
| 4622 |
|
|
elf_mn10300_sizeof_plt (info));
|
| 4623 |
|
|
bfd_put_32 (output_bfd,
|
| 4624 |
|
|
(sgot->output_section->vma
|
| 4625 |
|
|
+ sgot->output_offset
|
| 4626 |
|
|
+ got_offset),
|
| 4627 |
|
|
(splt->contents + h->plt.offset
|
| 4628 |
|
|
+ elf_mn10300_plt_symbol_offset (info)));
|
| 4629 |
|
|
|
| 4630 |
|
|
bfd_put_32 (output_bfd,
|
| 4631 |
|
|
(1 - h->plt.offset - elf_mn10300_plt_plt0_offset (info)),
|
| 4632 |
|
|
(splt->contents + h->plt.offset
|
| 4633 |
|
|
+ elf_mn10300_plt_plt0_offset (info)));
|
| 4634 |
|
|
}
|
| 4635 |
|
|
else
|
| 4636 |
|
|
{
|
| 4637 |
|
|
memcpy (splt->contents + h->plt.offset, elf_mn10300_pic_plt_entry,
|
| 4638 |
|
|
elf_mn10300_sizeof_plt (info));
|
| 4639 |
|
|
|
| 4640 |
|
|
bfd_put_32 (output_bfd, got_offset,
|
| 4641 |
|
|
(splt->contents + h->plt.offset
|
| 4642 |
|
|
+ elf_mn10300_plt_symbol_offset (info)));
|
| 4643 |
|
|
}
|
| 4644 |
|
|
|
| 4645 |
|
|
bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rela),
|
| 4646 |
|
|
(splt->contents + h->plt.offset
|
| 4647 |
|
|
+ elf_mn10300_plt_reloc_offset (info)));
|
| 4648 |
|
|
|
| 4649 |
|
|
/* Fill in the entry in the global offset table. */
|
| 4650 |
|
|
bfd_put_32 (output_bfd,
|
| 4651 |
|
|
(splt->output_section->vma
|
| 4652 |
|
|
+ splt->output_offset
|
| 4653 |
|
|
+ h->plt.offset
|
| 4654 |
|
|
+ elf_mn10300_plt_temp_offset (info)),
|
| 4655 |
|
|
sgot->contents + got_offset);
|
| 4656 |
|
|
|
| 4657 |
|
|
/* Fill in the entry in the .rela.plt section. */
|
| 4658 |
|
|
rel.r_offset = (sgot->output_section->vma
|
| 4659 |
|
|
+ sgot->output_offset
|
| 4660 |
|
|
+ got_offset);
|
| 4661 |
|
|
rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_JMP_SLOT);
|
| 4662 |
|
|
rel.r_addend = 0;
|
| 4663 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rel,
|
| 4664 |
|
|
(bfd_byte *) ((Elf32_External_Rela *) srel->contents
|
| 4665 |
|
|
+ plt_index));
|
| 4666 |
|
|
|
| 4667 |
|
|
if (!h->def_regular)
|
| 4668 |
|
|
/* Mark the symbol as undefined, rather than as defined in
|
| 4669 |
|
|
the .plt section. Leave the value alone. */
|
| 4670 |
|
|
sym->st_shndx = SHN_UNDEF;
|
| 4671 |
|
|
}
|
| 4672 |
|
|
|
| 4673 |
|
|
if (h->got.offset != (bfd_vma) -1)
|
| 4674 |
|
|
{
|
| 4675 |
|
|
asection * sgot;
|
| 4676 |
|
|
asection * srel;
|
| 4677 |
|
|
Elf_Internal_Rela rel;
|
| 4678 |
|
|
|
| 4679 |
|
|
/* This symbol has an entry in the global offset table. Set it up. */
|
| 4680 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got");
|
| 4681 |
|
|
srel = bfd_get_section_by_name (dynobj, ".rela.got");
|
| 4682 |
|
|
BFD_ASSERT (sgot != NULL && srel != NULL);
|
| 4683 |
|
|
|
| 4684 |
|
|
rel.r_offset = (sgot->output_section->vma
|
| 4685 |
|
|
+ sgot->output_offset
|
| 4686 |
|
|
+ (h->got.offset & ~1));
|
| 4687 |
|
|
|
| 4688 |
|
|
/* If this is a -Bsymbolic link, and the symbol is defined
|
| 4689 |
|
|
locally, we just want to emit a RELATIVE reloc. Likewise if
|
| 4690 |
|
|
the symbol was forced to be local because of a version file.
|
| 4691 |
|
|
The entry in the global offset table will already have been
|
| 4692 |
|
|
initialized in the relocate_section function. */
|
| 4693 |
|
|
if (info->shared
|
| 4694 |
|
|
&& (info->symbolic || h->dynindx == -1)
|
| 4695 |
|
|
&& h->def_regular)
|
| 4696 |
|
|
{
|
| 4697 |
|
|
rel.r_info = ELF32_R_INFO (0, R_MN10300_RELATIVE);
|
| 4698 |
|
|
rel.r_addend = (h->root.u.def.value
|
| 4699 |
|
|
+ h->root.u.def.section->output_section->vma
|
| 4700 |
|
|
+ h->root.u.def.section->output_offset);
|
| 4701 |
|
|
}
|
| 4702 |
|
|
else
|
| 4703 |
|
|
{
|
| 4704 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
|
| 4705 |
|
|
rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_GLOB_DAT);
|
| 4706 |
|
|
rel.r_addend = 0;
|
| 4707 |
|
|
}
|
| 4708 |
|
|
|
| 4709 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rel,
|
| 4710 |
|
|
(bfd_byte *) ((Elf32_External_Rela *) srel->contents
|
| 4711 |
|
|
+ srel->reloc_count));
|
| 4712 |
|
|
++ srel->reloc_count;
|
| 4713 |
|
|
}
|
| 4714 |
|
|
|
| 4715 |
|
|
if (h->needs_copy)
|
| 4716 |
|
|
{
|
| 4717 |
|
|
asection * s;
|
| 4718 |
|
|
Elf_Internal_Rela rel;
|
| 4719 |
|
|
|
| 4720 |
|
|
/* This symbol needs a copy reloc. Set it up. */
|
| 4721 |
|
|
BFD_ASSERT (h->dynindx != -1
|
| 4722 |
|
|
&& (h->root.type == bfd_link_hash_defined
|
| 4723 |
|
|
|| h->root.type == bfd_link_hash_defweak));
|
| 4724 |
|
|
|
| 4725 |
|
|
s = bfd_get_section_by_name (h->root.u.def.section->owner,
|
| 4726 |
|
|
".rela.bss");
|
| 4727 |
|
|
BFD_ASSERT (s != NULL);
|
| 4728 |
|
|
|
| 4729 |
|
|
rel.r_offset = (h->root.u.def.value
|
| 4730 |
|
|
+ h->root.u.def.section->output_section->vma
|
| 4731 |
|
|
+ h->root.u.def.section->output_offset);
|
| 4732 |
|
|
rel.r_info = ELF32_R_INFO (h->dynindx, R_MN10300_COPY);
|
| 4733 |
|
|
rel.r_addend = 0;
|
| 4734 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, & rel,
|
| 4735 |
|
|
(bfd_byte *) ((Elf32_External_Rela *) s->contents
|
| 4736 |
|
|
+ s->reloc_count));
|
| 4737 |
|
|
++ s->reloc_count;
|
| 4738 |
|
|
}
|
| 4739 |
|
|
|
| 4740 |
|
|
/* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
|
| 4741 |
|
|
if (streq (h->root.root.string, "_DYNAMIC")
|
| 4742 |
|
|
|| h == elf_hash_table (info)->hgot)
|
| 4743 |
|
|
sym->st_shndx = SHN_ABS;
|
| 4744 |
|
|
|
| 4745 |
|
|
return TRUE;
|
| 4746 |
|
|
}
|
| 4747 |
|
|
|
| 4748 |
|
|
/* Finish up the dynamic sections. */
|
| 4749 |
|
|
|
| 4750 |
|
|
static bfd_boolean
|
| 4751 |
|
|
_bfd_mn10300_elf_finish_dynamic_sections (bfd * output_bfd,
|
| 4752 |
|
|
struct bfd_link_info * info)
|
| 4753 |
|
|
{
|
| 4754 |
|
|
bfd * dynobj;
|
| 4755 |
|
|
asection * sgot;
|
| 4756 |
|
|
asection * sdyn;
|
| 4757 |
|
|
|
| 4758 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 4759 |
|
|
|
| 4760 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got.plt");
|
| 4761 |
|
|
BFD_ASSERT (sgot != NULL);
|
| 4762 |
|
|
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
| 4763 |
|
|
|
| 4764 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
| 4765 |
|
|
{
|
| 4766 |
|
|
asection * splt;
|
| 4767 |
|
|
Elf32_External_Dyn * dyncon;
|
| 4768 |
|
|
Elf32_External_Dyn * dynconend;
|
| 4769 |
|
|
|
| 4770 |
|
|
BFD_ASSERT (sdyn != NULL);
|
| 4771 |
|
|
|
| 4772 |
|
|
dyncon = (Elf32_External_Dyn *) sdyn->contents;
|
| 4773 |
|
|
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
|
| 4774 |
|
|
|
| 4775 |
|
|
for (; dyncon < dynconend; dyncon++)
|
| 4776 |
|
|
{
|
| 4777 |
|
|
Elf_Internal_Dyn dyn;
|
| 4778 |
|
|
const char * name;
|
| 4779 |
|
|
asection * s;
|
| 4780 |
|
|
|
| 4781 |
|
|
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
|
| 4782 |
|
|
|
| 4783 |
|
|
switch (dyn.d_tag)
|
| 4784 |
|
|
{
|
| 4785 |
|
|
default:
|
| 4786 |
|
|
break;
|
| 4787 |
|
|
|
| 4788 |
|
|
case DT_PLTGOT:
|
| 4789 |
|
|
name = ".got";
|
| 4790 |
|
|
goto get_vma;
|
| 4791 |
|
|
|
| 4792 |
|
|
case DT_JMPREL:
|
| 4793 |
|
|
name = ".rela.plt";
|
| 4794 |
|
|
get_vma:
|
| 4795 |
|
|
s = bfd_get_section_by_name (output_bfd, name);
|
| 4796 |
|
|
BFD_ASSERT (s != NULL);
|
| 4797 |
|
|
dyn.d_un.d_ptr = s->vma;
|
| 4798 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 4799 |
|
|
break;
|
| 4800 |
|
|
|
| 4801 |
|
|
case DT_PLTRELSZ:
|
| 4802 |
|
|
s = bfd_get_section_by_name (output_bfd, ".rela.plt");
|
| 4803 |
|
|
BFD_ASSERT (s != NULL);
|
| 4804 |
|
|
dyn.d_un.d_val = s->size;
|
| 4805 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 4806 |
|
|
break;
|
| 4807 |
|
|
|
| 4808 |
|
|
case DT_RELASZ:
|
| 4809 |
|
|
/* My reading of the SVR4 ABI indicates that the
|
| 4810 |
|
|
procedure linkage table relocs (DT_JMPREL) should be
|
| 4811 |
|
|
included in the overall relocs (DT_RELA). This is
|
| 4812 |
|
|
what Solaris does. However, UnixWare can not handle
|
| 4813 |
|
|
that case. Therefore, we override the DT_RELASZ entry
|
| 4814 |
|
|
here to make it not include the JMPREL relocs. Since
|
| 4815 |
|
|
the linker script arranges for .rela.plt to follow all
|
| 4816 |
|
|
other relocation sections, we don't have to worry
|
| 4817 |
|
|
about changing the DT_RELA entry. */
|
| 4818 |
|
|
s = bfd_get_section_by_name (output_bfd, ".rela.plt");
|
| 4819 |
|
|
if (s != NULL)
|
| 4820 |
|
|
dyn.d_un.d_val -= s->size;
|
| 4821 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 4822 |
|
|
break;
|
| 4823 |
|
|
}
|
| 4824 |
|
|
}
|
| 4825 |
|
|
|
| 4826 |
|
|
/* Fill in the first entry in the procedure linkage table. */
|
| 4827 |
|
|
splt = bfd_get_section_by_name (dynobj, ".plt");
|
| 4828 |
|
|
if (splt && splt->size > 0)
|
| 4829 |
|
|
{
|
| 4830 |
|
|
if (info->shared)
|
| 4831 |
|
|
{
|
| 4832 |
|
|
memcpy (splt->contents, elf_mn10300_pic_plt_entry,
|
| 4833 |
|
|
elf_mn10300_sizeof_plt (info));
|
| 4834 |
|
|
}
|
| 4835 |
|
|
else
|
| 4836 |
|
|
{
|
| 4837 |
|
|
memcpy (splt->contents, elf_mn10300_plt0_entry, PLT0_ENTRY_SIZE);
|
| 4838 |
|
|
bfd_put_32 (output_bfd,
|
| 4839 |
|
|
sgot->output_section->vma + sgot->output_offset + 4,
|
| 4840 |
|
|
splt->contents + elf_mn10300_plt0_gotid_offset (info));
|
| 4841 |
|
|
bfd_put_32 (output_bfd,
|
| 4842 |
|
|
sgot->output_section->vma + sgot->output_offset + 8,
|
| 4843 |
|
|
splt->contents + elf_mn10300_plt0_linker_offset (info));
|
| 4844 |
|
|
}
|
| 4845 |
|
|
|
| 4846 |
|
|
/* UnixWare sets the entsize of .plt to 4, although that doesn't
|
| 4847 |
|
|
really seem like the right value. */
|
| 4848 |
|
|
elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
|
| 4849 |
|
|
}
|
| 4850 |
|
|
}
|
| 4851 |
|
|
|
| 4852 |
|
|
/* Fill in the first three entries in the global offset table. */
|
| 4853 |
|
|
if (sgot->size > 0)
|
| 4854 |
|
|
{
|
| 4855 |
|
|
if (sdyn == NULL)
|
| 4856 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
|
| 4857 |
|
|
else
|
| 4858 |
|
|
bfd_put_32 (output_bfd,
|
| 4859 |
|
|
sdyn->output_section->vma + sdyn->output_offset,
|
| 4860 |
|
|
sgot->contents);
|
| 4861 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
|
| 4862 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
|
| 4863 |
|
|
}
|
| 4864 |
|
|
|
| 4865 |
|
|
elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
|
| 4866 |
|
|
|
| 4867 |
|
|
return TRUE;
|
| 4868 |
|
|
}
|
| 4869 |
|
|
|
| 4870 |
|
|
/* Classify relocation types, such that combreloc can sort them
|
| 4871 |
|
|
properly. */
|
| 4872 |
|
|
|
| 4873 |
|
|
static enum elf_reloc_type_class
|
| 4874 |
|
|
_bfd_mn10300_elf_reloc_type_class (const Elf_Internal_Rela *rela)
|
| 4875 |
|
|
{
|
| 4876 |
|
|
switch ((int) ELF32_R_TYPE (rela->r_info))
|
| 4877 |
|
|
{
|
| 4878 |
|
|
case R_MN10300_RELATIVE: return reloc_class_relative;
|
| 4879 |
|
|
case R_MN10300_JMP_SLOT: return reloc_class_plt;
|
| 4880 |
|
|
case R_MN10300_COPY: return reloc_class_copy;
|
| 4881 |
|
|
default: return reloc_class_normal;
|
| 4882 |
|
|
}
|
| 4883 |
|
|
}
|
| 4884 |
|
|
|
| 4885 |
|
|
/* Allocate space for an MN10300 extension to the bfd elf data structure. */
|
| 4886 |
|
|
|
| 4887 |
|
|
static bfd_boolean
|
| 4888 |
|
|
mn10300_elf_mkobject (bfd *abfd)
|
| 4889 |
|
|
{
|
| 4890 |
|
|
/* We do not actually need any extra room in the bfd elf data structure.
|
| 4891 |
|
|
But we do need the object_id of the structure to be set to
|
| 4892 |
|
|
MN10300_ELF_DATA so that elflink.c:elf_link_add_object_symols() will call
|
| 4893 |
|
|
our mn10300_elf_check_relocs function which will then allocate space in
|
| 4894 |
|
|
the .got section for any GOT based relocs. */
|
| 4895 |
|
|
return bfd_elf_allocate_object (abfd, sizeof (struct elf_obj_tdata),
|
| 4896 |
|
|
MN10300_ELF_DATA);
|
| 4897 |
|
|
}
|
| 4898 |
|
|
|
| 4899 |
|
|
#define bfd_elf32_mkobject mn10300_elf_mkobject
|
| 4900 |
|
|
|
| 4901 |
|
|
#ifndef ELF_ARCH
|
| 4902 |
|
|
#define TARGET_LITTLE_SYM bfd_elf32_mn10300_vec
|
| 4903 |
|
|
#define TARGET_LITTLE_NAME "elf32-mn10300"
|
| 4904 |
|
|
#define ELF_ARCH bfd_arch_mn10300
|
| 4905 |
|
|
#define ELF_TARGET_ID MN10300_ELF_DATA
|
| 4906 |
|
|
#define ELF_MACHINE_CODE EM_MN10300
|
| 4907 |
|
|
#define ELF_MACHINE_ALT1 EM_CYGNUS_MN10300
|
| 4908 |
|
|
#define ELF_MAXPAGESIZE 0x1000
|
| 4909 |
|
|
#endif
|
| 4910 |
|
|
|
| 4911 |
|
|
#define elf_info_to_howto mn10300_info_to_howto
|
| 4912 |
|
|
#define elf_info_to_howto_rel 0
|
| 4913 |
|
|
#define elf_backend_can_gc_sections 1
|
| 4914 |
|
|
#define elf_backend_rela_normal 1
|
| 4915 |
|
|
#define elf_backend_check_relocs mn10300_elf_check_relocs
|
| 4916 |
|
|
#define elf_backend_gc_mark_hook mn10300_elf_gc_mark_hook
|
| 4917 |
|
|
#define elf_backend_relocate_section mn10300_elf_relocate_section
|
| 4918 |
|
|
#define bfd_elf32_bfd_relax_section mn10300_elf_relax_section
|
| 4919 |
|
|
#define bfd_elf32_bfd_get_relocated_section_contents \
|
| 4920 |
|
|
mn10300_elf_get_relocated_section_contents
|
| 4921 |
|
|
#define bfd_elf32_bfd_link_hash_table_create \
|
| 4922 |
|
|
elf32_mn10300_link_hash_table_create
|
| 4923 |
|
|
#define bfd_elf32_bfd_link_hash_table_free \
|
| 4924 |
|
|
elf32_mn10300_link_hash_table_free
|
| 4925 |
|
|
|
| 4926 |
|
|
#ifndef elf_symbol_leading_char
|
| 4927 |
|
|
#define elf_symbol_leading_char '_'
|
| 4928 |
|
|
#endif
|
| 4929 |
|
|
|
| 4930 |
|
|
/* So we can set bits in e_flags. */
|
| 4931 |
|
|
#define elf_backend_final_write_processing \
|
| 4932 |
|
|
_bfd_mn10300_elf_final_write_processing
|
| 4933 |
|
|
#define elf_backend_object_p _bfd_mn10300_elf_object_p
|
| 4934 |
|
|
|
| 4935 |
|
|
#define bfd_elf32_bfd_merge_private_bfd_data \
|
| 4936 |
|
|
_bfd_mn10300_elf_merge_private_bfd_data
|
| 4937 |
|
|
|
| 4938 |
|
|
#define elf_backend_can_gc_sections 1
|
| 4939 |
|
|
#define elf_backend_create_dynamic_sections \
|
| 4940 |
|
|
_bfd_mn10300_elf_create_dynamic_sections
|
| 4941 |
|
|
#define elf_backend_adjust_dynamic_symbol \
|
| 4942 |
|
|
_bfd_mn10300_elf_adjust_dynamic_symbol
|
| 4943 |
|
|
#define elf_backend_size_dynamic_sections \
|
| 4944 |
|
|
_bfd_mn10300_elf_size_dynamic_sections
|
| 4945 |
|
|
#define elf_backend_omit_section_dynsym \
|
| 4946 |
|
|
((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
|
| 4947 |
|
|
#define elf_backend_finish_dynamic_symbol \
|
| 4948 |
|
|
_bfd_mn10300_elf_finish_dynamic_symbol
|
| 4949 |
|
|
#define elf_backend_finish_dynamic_sections \
|
| 4950 |
|
|
_bfd_mn10300_elf_finish_dynamic_sections
|
| 4951 |
|
|
|
| 4952 |
|
|
#define elf_backend_reloc_type_class \
|
| 4953 |
|
|
_bfd_mn10300_elf_reloc_type_class
|
| 4954 |
|
|
|
| 4955 |
|
|
#define elf_backend_want_got_plt 1
|
| 4956 |
|
|
#define elf_backend_plt_readonly 1
|
| 4957 |
|
|
#define elf_backend_want_plt_sym 0
|
| 4958 |
|
|
#define elf_backend_got_header_size 12
|
| 4959 |
|
|
|
| 4960 |
|
|
#include "elf32-target.h"
|