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jeremybenn |
/* BFD back-end for National Semiconductor's CR16 ELF
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Copyright 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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Written by M R Swami Reddy.
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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 Foundation,
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Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "bfdlink.h"
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#include "libbfd.h"
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#include "libiberty.h"
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#include "elf-bfd.h"
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#include "elf/cr16.h"
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/* The cr16 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_cr16_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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/* Used to mark functions which have had redundant parts of their
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prologue deleted. */
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#define CR16_DELETED_PROLOGUE_BYTES 0x1
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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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/* cr16_reloc_map array maps BFD relocation enum into a CRGAS relocation type. */
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struct cr16_reloc_map
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{
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bfd_reloc_code_real_type bfd_reloc_enum; /* BFD relocation enum. */
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unsigned short cr16_reloc_type; /* CR16 relocation type. */
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};
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static const struct cr16_reloc_map cr16_reloc_map[R_CR16_MAX] =
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{
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{BFD_RELOC_NONE, R_CR16_NONE},
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{BFD_RELOC_CR16_NUM8, R_CR16_NUM8},
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{BFD_RELOC_CR16_NUM16, R_CR16_NUM16},
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{BFD_RELOC_CR16_NUM32, R_CR16_NUM32},
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{BFD_RELOC_CR16_NUM32a, R_CR16_NUM32a},
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{BFD_RELOC_CR16_REGREL4, R_CR16_REGREL4},
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{BFD_RELOC_CR16_REGREL4a, R_CR16_REGREL4a},
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{BFD_RELOC_CR16_REGREL14, R_CR16_REGREL14},
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{BFD_RELOC_CR16_REGREL14a, R_CR16_REGREL14a},
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{BFD_RELOC_CR16_REGREL16, R_CR16_REGREL16},
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{BFD_RELOC_CR16_REGREL20, R_CR16_REGREL20},
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{BFD_RELOC_CR16_REGREL20a, R_CR16_REGREL20a},
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{BFD_RELOC_CR16_ABS20, R_CR16_ABS20},
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{BFD_RELOC_CR16_ABS24, R_CR16_ABS24},
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{BFD_RELOC_CR16_IMM4, R_CR16_IMM4},
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{BFD_RELOC_CR16_IMM8, R_CR16_IMM8},
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{BFD_RELOC_CR16_IMM16, R_CR16_IMM16},
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{BFD_RELOC_CR16_IMM20, R_CR16_IMM20},
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{BFD_RELOC_CR16_IMM24, R_CR16_IMM24},
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{BFD_RELOC_CR16_IMM32, R_CR16_IMM32},
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{BFD_RELOC_CR16_IMM32a, R_CR16_IMM32a},
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{BFD_RELOC_CR16_DISP4, R_CR16_DISP4},
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{BFD_RELOC_CR16_DISP8, R_CR16_DISP8},
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{BFD_RELOC_CR16_DISP16, R_CR16_DISP16},
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{BFD_RELOC_CR16_DISP24, R_CR16_DISP24},
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{BFD_RELOC_CR16_DISP24a, R_CR16_DISP24a},
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{BFD_RELOC_CR16_SWITCH8, R_CR16_SWITCH8},
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{BFD_RELOC_CR16_SWITCH16, R_CR16_SWITCH16},
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{BFD_RELOC_CR16_SWITCH32, R_CR16_SWITCH32},
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{BFD_RELOC_CR16_GOT_REGREL20, R_CR16_GOT_REGREL20},
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{BFD_RELOC_CR16_GOTC_REGREL20, R_CR16_GOTC_REGREL20},
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{BFD_RELOC_CR16_GLOB_DAT, R_CR16_GLOB_DAT}
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};
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static reloc_howto_type cr16_elf_howto_table[] =
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{
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HOWTO (R_CR16_NONE, /* type */
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0, /* rightshift */
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2, /* size */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_CR16_NONE", /* 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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HOWTO (R_CR16_NUM8, /* type */
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0, /* rightshift */
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0, /* size */
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8, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_CR16_NUM8", /* name */
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FALSE, /* partial_inplace */
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0x0, /* src_mask */
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0xff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_CR16_NUM16, /* type */
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0, /* rightshift */
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1, /* size */
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16, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_CR16_NUM16", /* name */
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FALSE, /* partial_inplace */
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0x0, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_CR16_NUM32, /* type */
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0, /* rightshift */
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2, /* size */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_CR16_NUM32", /* name */
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FALSE, /* partial_inplace */
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0x0, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_CR16_NUM32a, /* type */
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1, /* rightshift */
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2, /* size */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_CR16_NUM32a", /* name */
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FALSE, /* partial_inplace */
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0x0, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_CR16_REGREL4, /* type */
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0, /* rightshift */
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0, /* size */
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4, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_CR16_REGREL4", /* name */
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FALSE, /* partial_inplace */
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0x0, /* src_mask */
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0xf, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_CR16_REGREL4a, /* type */
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0, /* rightshift */
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0, /* size */
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4, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_CR16_REGREL4a", /* name */
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FALSE, /* partial_inplace */
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0x0, /* src_mask */
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0xf, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_CR16_REGREL14, /* type */
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0, /* rightshift */
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1, /* size */
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14, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_CR16_REGREL14", /* name */
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FALSE, /* partial_inplace */
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0x0, /* src_mask */
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0x3fff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_CR16_REGREL14a, /* type */
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0, /* rightshift */
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1, /* size */
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14, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_CR16_REGREL14a", /* name */
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FALSE, /* partial_inplace */
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0x0, /* src_mask */
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0x3fff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_CR16_REGREL16, /* type */
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0, /* rightshift */
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1, /* size */
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16, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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| 250 |
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"R_CR16_REGREL16", /* name */
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FALSE, /* partial_inplace */
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| 252 |
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0x0, /* src_mask */
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0xffff, /* dst_mask */
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| 254 |
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FALSE), /* pcrel_offset */
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| 255 |
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| 256 |
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HOWTO (R_CR16_REGREL20, /* type */
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| 257 |
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0, /* rightshift */
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2, /* size */
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| 259 |
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20, /* bitsize */
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| 260 |
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FALSE, /* pc_relative */
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| 261 |
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0, /* bitpos */
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| 262 |
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complain_overflow_bitfield,/* complain_on_overflow */
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| 263 |
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bfd_elf_generic_reloc, /* special_function */
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| 264 |
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"R_CR16_REGREL20", /* name */
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| 265 |
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FALSE, /* partial_inplace */
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| 266 |
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0x0, /* src_mask */
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| 267 |
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0xfffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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| 269 |
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| 270 |
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HOWTO (R_CR16_REGREL20a, /* type */
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| 271 |
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0, /* rightshift */
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| 272 |
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2, /* size */
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| 273 |
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20, /* bitsize */
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| 274 |
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FALSE, /* pc_relative */
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| 275 |
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0, /* bitpos */
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| 276 |
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complain_overflow_bitfield,/* complain_on_overflow */
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| 277 |
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bfd_elf_generic_reloc, /* special_function */
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| 278 |
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"R_CR16_REGREL20a", /* name */
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| 279 |
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FALSE, /* partial_inplace */
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| 280 |
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0x0, /* src_mask */
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| 281 |
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0xfffff, /* dst_mask */
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| 282 |
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FALSE), /* pcrel_offset */
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| 283 |
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| 284 |
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HOWTO (R_CR16_ABS20, /* type */
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| 285 |
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0, /* rightshift */
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| 286 |
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2, /* size */
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| 287 |
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20, /* bitsize */
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| 288 |
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FALSE, /* pc_relative */
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| 289 |
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0, /* bitpos */
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| 290 |
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complain_overflow_bitfield,/* complain_on_overflow */
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| 291 |
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bfd_elf_generic_reloc, /* special_function */
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| 292 |
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"R_CR16_ABS20", /* name */
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| 293 |
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FALSE, /* partial_inplace */
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| 294 |
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0x0, /* src_mask */
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| 295 |
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0xfffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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| 297 |
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| 298 |
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HOWTO (R_CR16_ABS24, /* type */
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| 299 |
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0, /* rightshift */
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| 300 |
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2, /* size */
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| 301 |
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24, /* bitsize */
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| 302 |
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FALSE, /* pc_relative */
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| 303 |
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0, /* bitpos */
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| 304 |
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complain_overflow_bitfield,/* complain_on_overflow */
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| 305 |
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bfd_elf_generic_reloc, /* special_function */
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| 306 |
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"R_CR16_ABS24", /* name */
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| 307 |
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FALSE, /* partial_inplace */
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| 308 |
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0x0, /* src_mask */
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| 309 |
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0xffffff, /* dst_mask */
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| 310 |
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FALSE), /* pcrel_offset */
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| 311 |
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| 312 |
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HOWTO (R_CR16_IMM4, /* type */
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| 313 |
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0, /* rightshift */
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| 314 |
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0, /* size */
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| 315 |
|
|
4, /* bitsize */
|
| 316 |
|
|
FALSE, /* pc_relative */
|
| 317 |
|
|
0, /* bitpos */
|
| 318 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 319 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 320 |
|
|
"R_CR16_IMM4", /* name */
|
| 321 |
|
|
FALSE, /* partial_inplace */
|
| 322 |
|
|
0x0, /* src_mask */
|
| 323 |
|
|
0xf, /* dst_mask */
|
| 324 |
|
|
FALSE), /* pcrel_offset */
|
| 325 |
|
|
|
| 326 |
|
|
HOWTO (R_CR16_IMM8, /* type */
|
| 327 |
|
|
0, /* rightshift */
|
| 328 |
|
|
0, /* size */
|
| 329 |
|
|
8, /* bitsize */
|
| 330 |
|
|
FALSE, /* pc_relative */
|
| 331 |
|
|
0, /* bitpos */
|
| 332 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 333 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 334 |
|
|
"R_CR16_IMM8", /* name */
|
| 335 |
|
|
FALSE, /* partial_inplace */
|
| 336 |
|
|
0x0, /* src_mask */
|
| 337 |
|
|
0xff, /* dst_mask */
|
| 338 |
|
|
FALSE), /* pcrel_offset */
|
| 339 |
|
|
|
| 340 |
|
|
HOWTO (R_CR16_IMM16, /* type */
|
| 341 |
|
|
0, /* rightshift */
|
| 342 |
|
|
1, /* size */
|
| 343 |
|
|
16, /* bitsize */
|
| 344 |
|
|
FALSE, /* pc_relative */
|
| 345 |
|
|
0, /* bitpos */
|
| 346 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 347 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 348 |
|
|
"R_CR16_IMM16", /* name */
|
| 349 |
|
|
FALSE, /* partial_inplace */
|
| 350 |
|
|
0x0, /* src_mask */
|
| 351 |
|
|
0xffff, /* dst_mask */
|
| 352 |
|
|
FALSE), /* pcrel_offset */
|
| 353 |
|
|
|
| 354 |
|
|
HOWTO (R_CR16_IMM20, /* type */
|
| 355 |
|
|
0, /* rightshift */
|
| 356 |
|
|
2, /* size */
|
| 357 |
|
|
20, /* bitsize */
|
| 358 |
|
|
FALSE, /* pc_relative */
|
| 359 |
|
|
0, /* bitpos */
|
| 360 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 361 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 362 |
|
|
"R_CR16_IMM20", /* name */
|
| 363 |
|
|
FALSE, /* partial_inplace */
|
| 364 |
|
|
0x0, /* src_mask */
|
| 365 |
|
|
0xfffff, /* dst_mask */
|
| 366 |
|
|
FALSE), /* pcrel_offset */
|
| 367 |
|
|
|
| 368 |
|
|
HOWTO (R_CR16_IMM24, /* type */
|
| 369 |
|
|
0, /* rightshift */
|
| 370 |
|
|
2, /* size */
|
| 371 |
|
|
24, /* bitsize */
|
| 372 |
|
|
FALSE, /* pc_relative */
|
| 373 |
|
|
0, /* bitpos */
|
| 374 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 375 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 376 |
|
|
"R_CR16_IMM24", /* name */
|
| 377 |
|
|
FALSE, /* partial_inplace */
|
| 378 |
|
|
0x0, /* src_mask */
|
| 379 |
|
|
0xffffff, /* dst_mask */
|
| 380 |
|
|
FALSE), /* pcrel_offset */
|
| 381 |
|
|
|
| 382 |
|
|
HOWTO (R_CR16_IMM32, /* type */
|
| 383 |
|
|
0, /* rightshift */
|
| 384 |
|
|
2, /* size */
|
| 385 |
|
|
32, /* bitsize */
|
| 386 |
|
|
FALSE, /* pc_relative */
|
| 387 |
|
|
0, /* bitpos */
|
| 388 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 389 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 390 |
|
|
"R_CR16_IMM32", /* name */
|
| 391 |
|
|
FALSE, /* partial_inplace */
|
| 392 |
|
|
0x0, /* src_mask */
|
| 393 |
|
|
0xffffffff, /* dst_mask */
|
| 394 |
|
|
FALSE), /* pcrel_offset */
|
| 395 |
|
|
|
| 396 |
|
|
HOWTO (R_CR16_IMM32a, /* type */
|
| 397 |
|
|
1, /* rightshift */
|
| 398 |
|
|
2, /* size */
|
| 399 |
|
|
32, /* bitsize */
|
| 400 |
|
|
FALSE, /* pc_relative */
|
| 401 |
|
|
0, /* bitpos */
|
| 402 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 403 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 404 |
|
|
"R_CR16_IMM32a", /* name */
|
| 405 |
|
|
FALSE, /* partial_inplace */
|
| 406 |
|
|
0x0, /* src_mask */
|
| 407 |
|
|
0xffffffff, /* dst_mask */
|
| 408 |
|
|
FALSE), /* pcrel_offset */
|
| 409 |
|
|
|
| 410 |
|
|
HOWTO (R_CR16_DISP4, /* type */
|
| 411 |
|
|
1, /* rightshift */
|
| 412 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 413 |
|
|
4, /* bitsize */
|
| 414 |
|
|
TRUE, /* pc_relative */
|
| 415 |
|
|
0, /* bitpos */
|
| 416 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
| 417 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 418 |
|
|
"R_CR16_DISP4", /* name */
|
| 419 |
|
|
FALSE, /* partial_inplace */
|
| 420 |
|
|
0x0, /* src_mask */
|
| 421 |
|
|
0xf, /* dst_mask */
|
| 422 |
|
|
FALSE), /* pcrel_offset */
|
| 423 |
|
|
|
| 424 |
|
|
HOWTO (R_CR16_DISP8, /* type */
|
| 425 |
|
|
1, /* rightshift */
|
| 426 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 427 |
|
|
8, /* bitsize */
|
| 428 |
|
|
TRUE, /* pc_relative */
|
| 429 |
|
|
0, /* bitpos */
|
| 430 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
| 431 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 432 |
|
|
"R_CR16_DISP8", /* name */
|
| 433 |
|
|
FALSE, /* partial_inplace */
|
| 434 |
|
|
0x0, /* src_mask */
|
| 435 |
|
|
0x1ff, /* dst_mask */
|
| 436 |
|
|
FALSE), /* pcrel_offset */
|
| 437 |
|
|
|
| 438 |
|
|
HOWTO (R_CR16_DISP16, /* type */
|
| 439 |
|
|
0, /* rightshift REVIITS: To sync with WinIDEA*/
|
| 440 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 441 |
|
|
16, /* bitsize */
|
| 442 |
|
|
TRUE, /* pc_relative */
|
| 443 |
|
|
0, /* bitpos */
|
| 444 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
| 445 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 446 |
|
|
"R_CR16_DISP16", /* name */
|
| 447 |
|
|
FALSE, /* partial_inplace */
|
| 448 |
|
|
0x0, /* src_mask */
|
| 449 |
|
|
0x1ffff, /* dst_mask */
|
| 450 |
|
|
FALSE), /* pcrel_offset */
|
| 451 |
|
|
/* REVISIT: DISP24 should be left-shift by 2 as per ISA doc
|
| 452 |
|
|
but its not done, to sync with WinIDEA and CR16 4.1 tools */
|
| 453 |
|
|
HOWTO (R_CR16_DISP24, /* type */
|
| 454 |
|
|
0, /* rightshift */
|
| 455 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 456 |
|
|
24, /* bitsize */
|
| 457 |
|
|
TRUE, /* pc_relative */
|
| 458 |
|
|
0, /* bitpos */
|
| 459 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
| 460 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 461 |
|
|
"R_CR16_DISP24", /* name */
|
| 462 |
|
|
FALSE, /* partial_inplace */
|
| 463 |
|
|
0x0, /* src_mask */
|
| 464 |
|
|
0x1ffffff, /* dst_mask */
|
| 465 |
|
|
FALSE), /* pcrel_offset */
|
| 466 |
|
|
|
| 467 |
|
|
HOWTO (R_CR16_DISP24a, /* type */
|
| 468 |
|
|
0, /* rightshift */
|
| 469 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 470 |
|
|
24, /* bitsize */
|
| 471 |
|
|
TRUE, /* pc_relative */
|
| 472 |
|
|
0, /* bitpos */
|
| 473 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
| 474 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 475 |
|
|
"R_CR16_DISP24a", /* name */
|
| 476 |
|
|
FALSE, /* partial_inplace */
|
| 477 |
|
|
0x0, /* src_mask */
|
| 478 |
|
|
0xffffff, /* dst_mask */
|
| 479 |
|
|
FALSE), /* pcrel_offset */
|
| 480 |
|
|
|
| 481 |
|
|
/* An 8 bit switch table entry. This is generated for an expression
|
| 482 |
|
|
such as ``.byte L1 - L2''. The offset holds the difference
|
| 483 |
|
|
between the reloc address and L2. */
|
| 484 |
|
|
HOWTO (R_CR16_SWITCH8, /* type */
|
| 485 |
|
|
0, /* rightshift */
|
| 486 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 487 |
|
|
8, /* bitsize */
|
| 488 |
|
|
FALSE, /* pc_relative */
|
| 489 |
|
|
0, /* bitpos */
|
| 490 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
| 491 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 492 |
|
|
"R_CR16_SWITCH8", /* name */
|
| 493 |
|
|
FALSE, /* partial_inplace */
|
| 494 |
|
|
0x0, /* src_mask */
|
| 495 |
|
|
0xff, /* dst_mask */
|
| 496 |
|
|
TRUE), /* pcrel_offset */
|
| 497 |
|
|
|
| 498 |
|
|
/* A 16 bit switch table entry. This is generated for an expression
|
| 499 |
|
|
such as ``.word L1 - L2''. The offset holds the difference
|
| 500 |
|
|
between the reloc address and L2. */
|
| 501 |
|
|
HOWTO (R_CR16_SWITCH16, /* type */
|
| 502 |
|
|
0, /* rightshift */
|
| 503 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 504 |
|
|
16, /* bitsize */
|
| 505 |
|
|
FALSE, /* pc_relative */
|
| 506 |
|
|
0, /* bitpos */
|
| 507 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
| 508 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 509 |
|
|
"R_CR16_SWITCH16", /* name */
|
| 510 |
|
|
FALSE, /* partial_inplace */
|
| 511 |
|
|
0x0, /* src_mask */
|
| 512 |
|
|
0xffff, /* dst_mask */
|
| 513 |
|
|
TRUE), /* pcrel_offset */
|
| 514 |
|
|
|
| 515 |
|
|
/* A 32 bit switch table entry. This is generated for an expression
|
| 516 |
|
|
such as ``.long L1 - L2''. The offset holds the difference
|
| 517 |
|
|
between the reloc address and L2. */
|
| 518 |
|
|
HOWTO (R_CR16_SWITCH32, /* type */
|
| 519 |
|
|
0, /* rightshift */
|
| 520 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 521 |
|
|
32, /* bitsize */
|
| 522 |
|
|
FALSE, /* pc_relative */
|
| 523 |
|
|
0, /* bitpos */
|
| 524 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
| 525 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 526 |
|
|
"R_CR16_SWITCH32", /* name */
|
| 527 |
|
|
FALSE, /* partial_inplace */
|
| 528 |
|
|
0x0, /* src_mask */
|
| 529 |
|
|
0xffffffff, /* dst_mask */
|
| 530 |
|
|
TRUE), /* pcrel_offset */
|
| 531 |
|
|
|
| 532 |
|
|
HOWTO (R_CR16_GOT_REGREL20, /* type */
|
| 533 |
|
|
0, /* rightshift */
|
| 534 |
|
|
2, /* size */
|
| 535 |
|
|
20, /* bitsize */
|
| 536 |
|
|
FALSE, /* pc_relative */
|
| 537 |
|
|
0, /* bitpos */
|
| 538 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 539 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 540 |
|
|
"R_CR16_GOT_REGREL20", /* name */
|
| 541 |
|
|
TRUE, /* partial_inplace */
|
| 542 |
|
|
0x0, /* src_mask */
|
| 543 |
|
|
0xfffff, /* dst_mask */
|
| 544 |
|
|
FALSE), /* pcrel_offset */
|
| 545 |
|
|
|
| 546 |
|
|
HOWTO (R_CR16_GOTC_REGREL20, /* type */
|
| 547 |
|
|
0, /* rightshift */
|
| 548 |
|
|
2, /* size */
|
| 549 |
|
|
20, /* bitsize */
|
| 550 |
|
|
FALSE, /* pc_relative */
|
| 551 |
|
|
0, /* bitpos */
|
| 552 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 553 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 554 |
|
|
"R_CR16_GOTC_REGREL20", /* name */
|
| 555 |
|
|
TRUE, /* partial_inplace */
|
| 556 |
|
|
0x0, /* src_mask */
|
| 557 |
|
|
0xfffff, /* dst_mask */
|
| 558 |
|
|
FALSE), /* pcrel_offset */
|
| 559 |
|
|
|
| 560 |
|
|
HOWTO (R_CR16_GLOB_DAT, /* type */
|
| 561 |
|
|
0, /* rightshift */
|
| 562 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 563 |
|
|
32, /* bitsize */
|
| 564 |
|
|
FALSE, /* pc_relative */
|
| 565 |
|
|
0, /* bitpos */
|
| 566 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
| 567 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 568 |
|
|
"R_CR16_GLOB_DAT", /* name */
|
| 569 |
|
|
FALSE, /* partial_inplace */
|
| 570 |
|
|
0x0, /* src_mask */
|
| 571 |
|
|
0xffffffff, /* dst_mask */
|
| 572 |
|
|
TRUE) /* pcrel_offset */
|
| 573 |
|
|
};
|
| 574 |
|
|
|
| 575 |
|
|
|
| 576 |
|
|
/* Create the GOT section. */
|
| 577 |
|
|
|
| 578 |
|
|
static bfd_boolean
|
| 579 |
|
|
_bfd_cr16_elf_create_got_section (bfd * abfd, struct bfd_link_info * info)
|
| 580 |
|
|
{
|
| 581 |
|
|
flagword flags;
|
| 582 |
|
|
asection * s;
|
| 583 |
|
|
struct elf_link_hash_entry * h;
|
| 584 |
|
|
const struct elf_backend_data * bed = get_elf_backend_data (abfd);
|
| 585 |
|
|
int ptralign;
|
| 586 |
|
|
|
| 587 |
|
|
/* This function may be called more than once. */
|
| 588 |
|
|
if (bfd_get_section_by_name (abfd, ".got") != NULL)
|
| 589 |
|
|
return TRUE;
|
| 590 |
|
|
|
| 591 |
|
|
switch (bed->s->arch_size)
|
| 592 |
|
|
{
|
| 593 |
|
|
case 16:
|
| 594 |
|
|
ptralign = 1;
|
| 595 |
|
|
break;
|
| 596 |
|
|
|
| 597 |
|
|
case 32:
|
| 598 |
|
|
ptralign = 2;
|
| 599 |
|
|
break;
|
| 600 |
|
|
|
| 601 |
|
|
default:
|
| 602 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 603 |
|
|
return FALSE;
|
| 604 |
|
|
}
|
| 605 |
|
|
|
| 606 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
|
| 607 |
|
|
| SEC_LINKER_CREATED);
|
| 608 |
|
|
|
| 609 |
|
|
s = bfd_make_section_with_flags (abfd, ".got", flags);
|
| 610 |
|
|
if (s == NULL
|
| 611 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
| 612 |
|
|
return FALSE;
|
| 613 |
|
|
|
| 614 |
|
|
if (bed->want_got_plt)
|
| 615 |
|
|
{
|
| 616 |
|
|
s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
|
| 617 |
|
|
if (s == NULL
|
| 618 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
| 619 |
|
|
return FALSE;
|
| 620 |
|
|
}
|
| 621 |
|
|
|
| 622 |
|
|
/* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
|
| 623 |
|
|
(or .got.plt) section. We don't do this in the linker script
|
| 624 |
|
|
because we don't want to define the symbol if we are not creating
|
| 625 |
|
|
a global offset table. */
|
| 626 |
|
|
h = _bfd_elf_define_linkage_sym (abfd, info, s, "_GLOBAL_OFFSET_TABLE_");
|
| 627 |
|
|
elf_hash_table (info)->hgot = h;
|
| 628 |
|
|
if (h == NULL)
|
| 629 |
|
|
return FALSE;
|
| 630 |
|
|
|
| 631 |
|
|
/* The first bit of the global offset table is the header. */
|
| 632 |
|
|
s->size += bed->got_header_size;
|
| 633 |
|
|
|
| 634 |
|
|
return TRUE;
|
| 635 |
|
|
}
|
| 636 |
|
|
|
| 637 |
|
|
|
| 638 |
|
|
/* Retrieve a howto ptr using a BFD reloc_code. */
|
| 639 |
|
|
|
| 640 |
|
|
static reloc_howto_type *
|
| 641 |
|
|
elf_cr16_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 642 |
|
|
bfd_reloc_code_real_type code)
|
| 643 |
|
|
{
|
| 644 |
|
|
unsigned int i;
|
| 645 |
|
|
|
| 646 |
|
|
for (i = 0; i < R_CR16_MAX; i++)
|
| 647 |
|
|
if (code == cr16_reloc_map[i].bfd_reloc_enum)
|
| 648 |
|
|
return &cr16_elf_howto_table[cr16_reloc_map[i].cr16_reloc_type];
|
| 649 |
|
|
|
| 650 |
|
|
_bfd_error_handler ("Unsupported CR16 relocation type: 0x%x\n", code);
|
| 651 |
|
|
return NULL;
|
| 652 |
|
|
}
|
| 653 |
|
|
|
| 654 |
|
|
static reloc_howto_type *
|
| 655 |
|
|
elf_cr16_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 656 |
|
|
const char *r_name)
|
| 657 |
|
|
{
|
| 658 |
|
|
unsigned int i;
|
| 659 |
|
|
|
| 660 |
|
|
for (i = 0; ARRAY_SIZE (cr16_elf_howto_table); i++)
|
| 661 |
|
|
if (cr16_elf_howto_table[i].name != NULL
|
| 662 |
|
|
&& strcasecmp (cr16_elf_howto_table[i].name, r_name) == 0)
|
| 663 |
|
|
return cr16_elf_howto_table + i;
|
| 664 |
|
|
|
| 665 |
|
|
return NULL;
|
| 666 |
|
|
}
|
| 667 |
|
|
|
| 668 |
|
|
/* Retrieve a howto ptr using an internal relocation entry. */
|
| 669 |
|
|
|
| 670 |
|
|
static void
|
| 671 |
|
|
elf_cr16_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
|
| 672 |
|
|
Elf_Internal_Rela *dst)
|
| 673 |
|
|
{
|
| 674 |
|
|
unsigned int r_type = ELF32_R_TYPE (dst->r_info);
|
| 675 |
|
|
|
| 676 |
|
|
BFD_ASSERT (r_type < (unsigned int) R_CR16_MAX);
|
| 677 |
|
|
cache_ptr->howto = cr16_elf_howto_table + r_type;
|
| 678 |
|
|
}
|
| 679 |
|
|
|
| 680 |
|
|
/* Look through the relocs for a section during the first phase.
|
| 681 |
|
|
Since we don't do .gots or .plts, we just need to consider the
|
| 682 |
|
|
virtual table relocs for gc. */
|
| 683 |
|
|
|
| 684 |
|
|
static bfd_boolean
|
| 685 |
|
|
cr16_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, asection *sec,
|
| 686 |
|
|
const Elf_Internal_Rela *relocs)
|
| 687 |
|
|
{
|
| 688 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 689 |
|
|
Elf_Internal_Sym * isymbuf = NULL;
|
| 690 |
|
|
struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
|
| 691 |
|
|
const Elf_Internal_Rela *rel;
|
| 692 |
|
|
const Elf_Internal_Rela *rel_end;
|
| 693 |
|
|
bfd * dynobj;
|
| 694 |
|
|
bfd_vma * local_got_offsets;
|
| 695 |
|
|
asection * sgot;
|
| 696 |
|
|
asection * srelgot;
|
| 697 |
|
|
|
| 698 |
|
|
sgot = NULL;
|
| 699 |
|
|
srelgot = NULL;
|
| 700 |
|
|
bfd_boolean result = FALSE;
|
| 701 |
|
|
|
| 702 |
|
|
if (info->relocatable)
|
| 703 |
|
|
return TRUE;
|
| 704 |
|
|
|
| 705 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
| 706 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 707 |
|
|
sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
|
| 708 |
|
|
if (!elf_bad_symtab (abfd))
|
| 709 |
|
|
sym_hashes_end -= symtab_hdr->sh_info;
|
| 710 |
|
|
|
| 711 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 712 |
|
|
local_got_offsets = elf_local_got_offsets (abfd);
|
| 713 |
|
|
rel_end = relocs + sec->reloc_count;
|
| 714 |
|
|
for (rel = relocs; rel < rel_end; rel++)
|
| 715 |
|
|
{
|
| 716 |
|
|
struct elf_link_hash_entry *h;
|
| 717 |
|
|
unsigned long r_symndx;
|
| 718 |
|
|
|
| 719 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 720 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 721 |
|
|
h = NULL;
|
| 722 |
|
|
else
|
| 723 |
|
|
{
|
| 724 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 725 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
| 726 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
| 727 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 728 |
|
|
}
|
| 729 |
|
|
|
| 730 |
|
|
/* Some relocs require a global offset table. */
|
| 731 |
|
|
if (dynobj == NULL)
|
| 732 |
|
|
{
|
| 733 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
| 734 |
|
|
{
|
| 735 |
|
|
case R_CR16_GOT_REGREL20:
|
| 736 |
|
|
case R_CR16_GOTC_REGREL20:
|
| 737 |
|
|
elf_hash_table (info)->dynobj = dynobj = abfd;
|
| 738 |
|
|
if (! _bfd_cr16_elf_create_got_section (dynobj, info))
|
| 739 |
|
|
goto fail;
|
| 740 |
|
|
break;
|
| 741 |
|
|
|
| 742 |
|
|
default:
|
| 743 |
|
|
break;
|
| 744 |
|
|
}
|
| 745 |
|
|
}
|
| 746 |
|
|
|
| 747 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
| 748 |
|
|
{
|
| 749 |
|
|
case R_CR16_GOT_REGREL20:
|
| 750 |
|
|
case R_CR16_GOTC_REGREL20:
|
| 751 |
|
|
/* This symbol requires a global offset table entry. */
|
| 752 |
|
|
|
| 753 |
|
|
if (sgot == NULL)
|
| 754 |
|
|
{
|
| 755 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got");
|
| 756 |
|
|
BFD_ASSERT (sgot != NULL);
|
| 757 |
|
|
}
|
| 758 |
|
|
|
| 759 |
|
|
if (srelgot == NULL
|
| 760 |
|
|
&& (h != NULL || info->executable))
|
| 761 |
|
|
{
|
| 762 |
|
|
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
|
| 763 |
|
|
if (srelgot == NULL)
|
| 764 |
|
|
{
|
| 765 |
|
|
srelgot = bfd_make_section_with_flags (dynobj,
|
| 766 |
|
|
".rela.got",
|
| 767 |
|
|
(SEC_ALLOC
|
| 768 |
|
|
| SEC_LOAD
|
| 769 |
|
|
| SEC_HAS_CONTENTS
|
| 770 |
|
|
| SEC_IN_MEMORY
|
| 771 |
|
|
| SEC_LINKER_CREATED
|
| 772 |
|
|
| SEC_READONLY));
|
| 773 |
|
|
if (srelgot == NULL
|
| 774 |
|
|
|| ! bfd_set_section_alignment (dynobj, srelgot, 2))
|
| 775 |
|
|
goto fail;
|
| 776 |
|
|
}
|
| 777 |
|
|
}
|
| 778 |
|
|
|
| 779 |
|
|
if (h != NULL)
|
| 780 |
|
|
{
|
| 781 |
|
|
if (h->got.offset != (bfd_vma) -1)
|
| 782 |
|
|
/* We have already allocated space in the .got. */
|
| 783 |
|
|
break;
|
| 784 |
|
|
|
| 785 |
|
|
h->got.offset = sgot->size;
|
| 786 |
|
|
|
| 787 |
|
|
/* Make sure this symbol is output as a dynamic symbol. */
|
| 788 |
|
|
if (h->dynindx == -1)
|
| 789 |
|
|
{
|
| 790 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 791 |
|
|
goto fail;
|
| 792 |
|
|
}
|
| 793 |
|
|
|
| 794 |
|
|
srelgot->size += sizeof (Elf32_External_Rela);
|
| 795 |
|
|
}
|
| 796 |
|
|
else
|
| 797 |
|
|
{
|
| 798 |
|
|
/* This is a global offset table entry for a local
|
| 799 |
|
|
symbol. */
|
| 800 |
|
|
if (local_got_offsets == NULL)
|
| 801 |
|
|
{
|
| 802 |
|
|
size_t size;
|
| 803 |
|
|
unsigned int i;
|
| 804 |
|
|
|
| 805 |
|
|
size = symtab_hdr->sh_info * sizeof (bfd_vma);
|
| 806 |
|
|
local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
|
| 807 |
|
|
|
| 808 |
|
|
if (local_got_offsets == NULL)
|
| 809 |
|
|
goto fail;
|
| 810 |
|
|
|
| 811 |
|
|
elf_local_got_offsets (abfd) = local_got_offsets;
|
| 812 |
|
|
|
| 813 |
|
|
for (i = 0; i < symtab_hdr->sh_info; i++)
|
| 814 |
|
|
local_got_offsets[i] = (bfd_vma) -1;
|
| 815 |
|
|
}
|
| 816 |
|
|
|
| 817 |
|
|
if (local_got_offsets[r_symndx] != (bfd_vma) -1)
|
| 818 |
|
|
/* We have already allocated space in the .got. */
|
| 819 |
|
|
break;
|
| 820 |
|
|
|
| 821 |
|
|
local_got_offsets[r_symndx] = sgot->size;
|
| 822 |
|
|
|
| 823 |
|
|
if (info->executable)
|
| 824 |
|
|
/* If we are generating a shared object, we need to
|
| 825 |
|
|
output a R_CR16_RELATIVE reloc so that the dynamic
|
| 826 |
|
|
linker can adjust this GOT entry. */
|
| 827 |
|
|
srelgot->size += sizeof (Elf32_External_Rela);
|
| 828 |
|
|
}
|
| 829 |
|
|
|
| 830 |
|
|
sgot->size += 4;
|
| 831 |
|
|
break;
|
| 832 |
|
|
|
| 833 |
|
|
}
|
| 834 |
|
|
}
|
| 835 |
|
|
|
| 836 |
|
|
result = TRUE;
|
| 837 |
|
|
fail:
|
| 838 |
|
|
if (isymbuf != NULL)
|
| 839 |
|
|
free (isymbuf);
|
| 840 |
|
|
|
| 841 |
|
|
return result;
|
| 842 |
|
|
}
|
| 843 |
|
|
|
| 844 |
|
|
/* Perform a relocation as part of a final link. */
|
| 845 |
|
|
|
| 846 |
|
|
static bfd_reloc_status_type
|
| 847 |
|
|
cr16_elf_final_link_relocate (reloc_howto_type *howto,
|
| 848 |
|
|
bfd *input_bfd,
|
| 849 |
|
|
bfd *output_bfd ATTRIBUTE_UNUSED,
|
| 850 |
|
|
asection *input_section,
|
| 851 |
|
|
bfd_byte *contents,
|
| 852 |
|
|
bfd_vma offset,
|
| 853 |
|
|
bfd_vma Rvalue,
|
| 854 |
|
|
bfd_vma addend,
|
| 855 |
|
|
struct elf_link_hash_entry * h,
|
| 856 |
|
|
unsigned long symndx ATTRIBUTE_UNUSED,
|
| 857 |
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
| 858 |
|
|
asection *sec ATTRIBUTE_UNUSED,
|
| 859 |
|
|
int is_local ATTRIBUTE_UNUSED)
|
| 860 |
|
|
{
|
| 861 |
|
|
unsigned short r_type = howto->type;
|
| 862 |
|
|
bfd_byte *hit_data = contents + offset;
|
| 863 |
|
|
bfd_vma reloc_bits, check, Rvalue1;
|
| 864 |
|
|
bfd * dynobj;
|
| 865 |
|
|
bfd_vma * local_got_offsets;
|
| 866 |
|
|
|
| 867 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 868 |
|
|
local_got_offsets = elf_local_got_offsets (input_bfd);
|
| 869 |
|
|
|
| 870 |
|
|
switch (r_type)
|
| 871 |
|
|
{
|
| 872 |
|
|
case R_CR16_IMM4:
|
| 873 |
|
|
case R_CR16_IMM20:
|
| 874 |
|
|
case R_CR16_ABS20:
|
| 875 |
|
|
break;
|
| 876 |
|
|
|
| 877 |
|
|
case R_CR16_IMM8:
|
| 878 |
|
|
case R_CR16_IMM16:
|
| 879 |
|
|
case R_CR16_IMM32:
|
| 880 |
|
|
case R_CR16_IMM32a:
|
| 881 |
|
|
case R_CR16_REGREL4:
|
| 882 |
|
|
case R_CR16_REGREL4a:
|
| 883 |
|
|
case R_CR16_REGREL14:
|
| 884 |
|
|
case R_CR16_REGREL14a:
|
| 885 |
|
|
case R_CR16_REGREL16:
|
| 886 |
|
|
case R_CR16_REGREL20:
|
| 887 |
|
|
case R_CR16_REGREL20a:
|
| 888 |
|
|
case R_CR16_GOT_REGREL20:
|
| 889 |
|
|
case R_CR16_GOTC_REGREL20:
|
| 890 |
|
|
case R_CR16_ABS24:
|
| 891 |
|
|
case R_CR16_DISP16:
|
| 892 |
|
|
case R_CR16_DISP24:
|
| 893 |
|
|
/* 'hit_data' is relative to the start of the instruction, not the
|
| 894 |
|
|
relocation offset. Advance it to account for the exact offset. */
|
| 895 |
|
|
hit_data += 2;
|
| 896 |
|
|
break;
|
| 897 |
|
|
|
| 898 |
|
|
case R_CR16_NONE:
|
| 899 |
|
|
return bfd_reloc_ok;
|
| 900 |
|
|
break;
|
| 901 |
|
|
|
| 902 |
|
|
case R_CR16_DISP4:
|
| 903 |
|
|
if (is_local)
|
| 904 |
|
|
Rvalue += -1;
|
| 905 |
|
|
break;
|
| 906 |
|
|
|
| 907 |
|
|
case R_CR16_DISP8:
|
| 908 |
|
|
case R_CR16_DISP24a:
|
| 909 |
|
|
if (is_local)
|
| 910 |
|
|
Rvalue -= -1;
|
| 911 |
|
|
break;
|
| 912 |
|
|
|
| 913 |
|
|
case R_CR16_SWITCH8:
|
| 914 |
|
|
case R_CR16_SWITCH16:
|
| 915 |
|
|
case R_CR16_SWITCH32:
|
| 916 |
|
|
/* We only care about the addend, where the difference between
|
| 917 |
|
|
expressions is kept. */
|
| 918 |
|
|
Rvalue = 0;
|
| 919 |
|
|
|
| 920 |
|
|
default:
|
| 921 |
|
|
break;
|
| 922 |
|
|
}
|
| 923 |
|
|
|
| 924 |
|
|
if (howto->pc_relative)
|
| 925 |
|
|
{
|
| 926 |
|
|
/* Subtract the address of the section containing the location. */
|
| 927 |
|
|
Rvalue -= (input_section->output_section->vma
|
| 928 |
|
|
+ input_section->output_offset);
|
| 929 |
|
|
/* Subtract the position of the location within the section. */
|
| 930 |
|
|
Rvalue -= offset;
|
| 931 |
|
|
}
|
| 932 |
|
|
|
| 933 |
|
|
/* Add in supplied addend. */
|
| 934 |
|
|
Rvalue += addend;
|
| 935 |
|
|
|
| 936 |
|
|
/* Complain if the bitfield overflows, whether it is considered
|
| 937 |
|
|
as signed or unsigned. */
|
| 938 |
|
|
check = Rvalue >> howto->rightshift;
|
| 939 |
|
|
|
| 940 |
|
|
/* Assumes two's complement. This expression avoids
|
| 941 |
|
|
overflow if howto->bitsize is the number of bits in
|
| 942 |
|
|
bfd_vma. */
|
| 943 |
|
|
reloc_bits = (((1 << (howto->bitsize - 1)) - 1) << 1) | 1;
|
| 944 |
|
|
|
| 945 |
|
|
/* For GOT and GOTC relocs no boundary checks applied. */
|
| 946 |
|
|
if (!((r_type == R_CR16_GOT_REGREL20)
|
| 947 |
|
|
|| (r_type == R_CR16_GOTC_REGREL20)))
|
| 948 |
|
|
{
|
| 949 |
|
|
if (((bfd_vma) check & ~reloc_bits) != 0
|
| 950 |
|
|
&& (((bfd_vma) check & ~reloc_bits)
|
| 951 |
|
|
!= (-(bfd_vma) 1 & ~reloc_bits)))
|
| 952 |
|
|
{
|
| 953 |
|
|
/* The above right shift is incorrect for a signed
|
| 954 |
|
|
value. See if turning on the upper bits fixes the
|
| 955 |
|
|
overflow. */
|
| 956 |
|
|
if (howto->rightshift && (bfd_signed_vma) Rvalue < 0)
|
| 957 |
|
|
{
|
| 958 |
|
|
check |= ((bfd_vma) - 1
|
| 959 |
|
|
& ~((bfd_vma) - 1
|
| 960 |
|
|
>> howto->rightshift));
|
| 961 |
|
|
|
| 962 |
|
|
if (((bfd_vma) check & ~reloc_bits)
|
| 963 |
|
|
!= (-(bfd_vma) 1 & ~reloc_bits))
|
| 964 |
|
|
return bfd_reloc_overflow;
|
| 965 |
|
|
}
|
| 966 |
|
|
else
|
| 967 |
|
|
return bfd_reloc_overflow;
|
| 968 |
|
|
}
|
| 969 |
|
|
|
| 970 |
|
|
/* Drop unwanted bits from the value we are relocating to. */
|
| 971 |
|
|
Rvalue >>= (bfd_vma) howto->rightshift;
|
| 972 |
|
|
|
| 973 |
|
|
/* Apply dst_mask to select only relocatable part of the insn. */
|
| 974 |
|
|
Rvalue &= howto->dst_mask;
|
| 975 |
|
|
}
|
| 976 |
|
|
|
| 977 |
|
|
switch (howto->size)
|
| 978 |
|
|
{
|
| 979 |
|
|
case 0:
|
| 980 |
|
|
if (r_type == R_CR16_DISP8)
|
| 981 |
|
|
{
|
| 982 |
|
|
Rvalue1 = bfd_get_16 (input_bfd, hit_data);
|
| 983 |
|
|
Rvalue = ((Rvalue1 & 0xf000) | ((Rvalue << 4) & 0xf00)
|
| 984 |
|
|
| (Rvalue1 & 0x00f0) | (Rvalue & 0xf));
|
| 985 |
|
|
bfd_put_16 (input_bfd, Rvalue, hit_data);
|
| 986 |
|
|
}
|
| 987 |
|
|
else if (r_type == R_CR16_IMM4)
|
| 988 |
|
|
{
|
| 989 |
|
|
Rvalue1 = bfd_get_16 (input_bfd, hit_data);
|
| 990 |
|
|
Rvalue = (((Rvalue1 & 0xff) << 8) | ((Rvalue << 4) & 0xf0)
|
| 991 |
|
|
| ((Rvalue1 & 0x0f00) >> 8));
|
| 992 |
|
|
bfd_put_16 (input_bfd, Rvalue, hit_data);
|
| 993 |
|
|
}
|
| 994 |
|
|
else if (r_type == R_CR16_DISP4)
|
| 995 |
|
|
{
|
| 996 |
|
|
Rvalue1 = bfd_get_16 (input_bfd, hit_data);
|
| 997 |
|
|
Rvalue = (Rvalue1 | ((Rvalue & 0xf) << 4));
|
| 998 |
|
|
bfd_put_16 (input_bfd, Rvalue, hit_data);
|
| 999 |
|
|
}
|
| 1000 |
|
|
else
|
| 1001 |
|
|
{
|
| 1002 |
|
|
bfd_put_8 (input_bfd, (unsigned char) Rvalue, hit_data);
|
| 1003 |
|
|
}
|
| 1004 |
|
|
break;
|
| 1005 |
|
|
|
| 1006 |
|
|
case 1:
|
| 1007 |
|
|
if (r_type == R_CR16_DISP16)
|
| 1008 |
|
|
{
|
| 1009 |
|
|
Rvalue |= (bfd_get_16 (input_bfd, hit_data));
|
| 1010 |
|
|
Rvalue = ((Rvalue & 0xfffe) | ((Rvalue >> 16) & 0x1));
|
| 1011 |
|
|
}
|
| 1012 |
|
|
if (r_type == R_CR16_IMM16)
|
| 1013 |
|
|
{
|
| 1014 |
|
|
Rvalue1 = bfd_get_16 (input_bfd, hit_data);
|
| 1015 |
|
|
|
| 1016 |
|
|
/* Add or subtract the offset value. */
|
| 1017 |
|
|
if (Rvalue1 & 0x8000)
|
| 1018 |
|
|
Rvalue -= (~Rvalue1 + 1) & 0xffff;
|
| 1019 |
|
|
else
|
| 1020 |
|
|
Rvalue += Rvalue1;
|
| 1021 |
|
|
|
| 1022 |
|
|
/* Check for range. */
|
| 1023 |
|
|
if ((long) Rvalue > 0xffff || (long) Rvalue < 0x0)
|
| 1024 |
|
|
return bfd_reloc_overflow;
|
| 1025 |
|
|
}
|
| 1026 |
|
|
|
| 1027 |
|
|
bfd_put_16 (input_bfd, Rvalue, hit_data);
|
| 1028 |
|
|
break;
|
| 1029 |
|
|
|
| 1030 |
|
|
case 2:
|
| 1031 |
|
|
if ((r_type == R_CR16_ABS20) || (r_type == R_CR16_IMM20))
|
| 1032 |
|
|
{
|
| 1033 |
|
|
Rvalue1 = (bfd_get_16 (input_bfd, hit_data + 2)
|
| 1034 |
|
|
| (((bfd_get_16 (input_bfd, hit_data) & 0xf) <<16)));
|
| 1035 |
|
|
|
| 1036 |
|
|
/* Add or subtract the offset value. */
|
| 1037 |
|
|
if (Rvalue1 & 0x80000)
|
| 1038 |
|
|
Rvalue -= (~Rvalue1 + 1) & 0xfffff;
|
| 1039 |
|
|
else
|
| 1040 |
|
|
Rvalue += Rvalue1;
|
| 1041 |
|
|
|
| 1042 |
|
|
/* Check for range. */
|
| 1043 |
|
|
if ((long) Rvalue > 0xfffff || (long) Rvalue < 0x0)
|
| 1044 |
|
|
return bfd_reloc_overflow;
|
| 1045 |
|
|
|
| 1046 |
|
|
bfd_put_16 (input_bfd, ((bfd_get_16 (input_bfd, hit_data) & 0xfff0)
|
| 1047 |
|
|
| ((Rvalue >> 16) & 0xf)), hit_data);
|
| 1048 |
|
|
bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2);
|
| 1049 |
|
|
}
|
| 1050 |
|
|
else if (r_type == R_CR16_GOT_REGREL20)
|
| 1051 |
|
|
{
|
| 1052 |
|
|
asection * sgot = bfd_get_section_by_name (dynobj, ".got");
|
| 1053 |
|
|
|
| 1054 |
|
|
if (h != NULL)
|
| 1055 |
|
|
{
|
| 1056 |
|
|
bfd_vma off;
|
| 1057 |
|
|
|
| 1058 |
|
|
off = h->got.offset;
|
| 1059 |
|
|
BFD_ASSERT (off != (bfd_vma) -1);
|
| 1060 |
|
|
|
| 1061 |
|
|
if (! elf_hash_table (info)->dynamic_sections_created
|
| 1062 |
|
|
|| SYMBOL_REFERENCES_LOCAL (info, h))
|
| 1063 |
|
|
/* This is actually a static link, or it is a
|
| 1064 |
|
|
-Bsymbolic link and the symbol is defined
|
| 1065 |
|
|
locally, or the symbol was forced to be local
|
| 1066 |
|
|
because of a version file. We must initialize
|
| 1067 |
|
|
this entry in the global offset table.
|
| 1068 |
|
|
When doing a dynamic link, we create a .rela.got
|
| 1069 |
|
|
relocation entry to initialize the value. This
|
| 1070 |
|
|
is done in the finish_dynamic_symbol routine. */
|
| 1071 |
|
|
bfd_put_32 (output_bfd, Rvalue, sgot->contents + off);
|
| 1072 |
|
|
|
| 1073 |
|
|
Rvalue = sgot->output_offset + off;
|
| 1074 |
|
|
}
|
| 1075 |
|
|
else
|
| 1076 |
|
|
{
|
| 1077 |
|
|
bfd_vma off;
|
| 1078 |
|
|
|
| 1079 |
|
|
off = elf_local_got_offsets (input_bfd)[symndx];
|
| 1080 |
|
|
bfd_put_32 (output_bfd,Rvalue, sgot->contents + off);
|
| 1081 |
|
|
|
| 1082 |
|
|
Rvalue = sgot->output_offset + off;
|
| 1083 |
|
|
}
|
| 1084 |
|
|
|
| 1085 |
|
|
Rvalue += addend;
|
| 1086 |
|
|
|
| 1087 |
|
|
/* REVISIT: if ((long) Rvalue > 0xffffff ||
|
| 1088 |
|
|
(long) Rvalue < -0x800000). */
|
| 1089 |
|
|
if ((long) Rvalue > 0xffffff || (long) Rvalue < 0)
|
| 1090 |
|
|
return bfd_reloc_overflow;
|
| 1091 |
|
|
|
| 1092 |
|
|
|
| 1093 |
|
|
bfd_put_16 (input_bfd, (bfd_get_16 (input_bfd, hit_data))
|
| 1094 |
|
|
| (((Rvalue >> 16) & 0xf) << 8), hit_data);
|
| 1095 |
|
|
bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2);
|
| 1096 |
|
|
|
| 1097 |
|
|
}
|
| 1098 |
|
|
else if (r_type == R_CR16_GOTC_REGREL20)
|
| 1099 |
|
|
{
|
| 1100 |
|
|
asection * sgot;
|
| 1101 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got");
|
| 1102 |
|
|
|
| 1103 |
|
|
if (h != NULL)
|
| 1104 |
|
|
{
|
| 1105 |
|
|
bfd_vma off;
|
| 1106 |
|
|
|
| 1107 |
|
|
off = h->got.offset;
|
| 1108 |
|
|
BFD_ASSERT (off != (bfd_vma) -1);
|
| 1109 |
|
|
|
| 1110 |
|
|
Rvalue >>=1; /* For code symbols. */
|
| 1111 |
|
|
|
| 1112 |
|
|
if (! elf_hash_table (info)->dynamic_sections_created
|
| 1113 |
|
|
|| SYMBOL_REFERENCES_LOCAL (info, h))
|
| 1114 |
|
|
/* This is actually a static link, or it is a
|
| 1115 |
|
|
-Bsymbolic link and the symbol is defined
|
| 1116 |
|
|
locally, or the symbol was forced to be local
|
| 1117 |
|
|
because of a version file. We must initialize
|
| 1118 |
|
|
this entry in the global offset table.
|
| 1119 |
|
|
When doing a dynamic link, we create a .rela.got
|
| 1120 |
|
|
relocation entry to initialize the value. This
|
| 1121 |
|
|
is done in the finish_dynamic_symbol routine. */
|
| 1122 |
|
|
bfd_put_32 (output_bfd, Rvalue, sgot->contents + off);
|
| 1123 |
|
|
|
| 1124 |
|
|
Rvalue = sgot->output_offset + off;
|
| 1125 |
|
|
}
|
| 1126 |
|
|
else
|
| 1127 |
|
|
{
|
| 1128 |
|
|
bfd_vma off;
|
| 1129 |
|
|
|
| 1130 |
|
|
off = elf_local_got_offsets (input_bfd)[symndx];
|
| 1131 |
|
|
Rvalue >>= 1;
|
| 1132 |
|
|
bfd_put_32 (output_bfd,Rvalue, sgot->contents + off);
|
| 1133 |
|
|
Rvalue = sgot->output_offset + off;
|
| 1134 |
|
|
}
|
| 1135 |
|
|
|
| 1136 |
|
|
Rvalue += addend;
|
| 1137 |
|
|
|
| 1138 |
|
|
/* Check if any value in DISP. */
|
| 1139 |
|
|
Rvalue1 =((bfd_get_32 (input_bfd, hit_data) >>16)
|
| 1140 |
|
|
| (((bfd_get_32 (input_bfd, hit_data) & 0xfff) >> 8) <<16));
|
| 1141 |
|
|
|
| 1142 |
|
|
/* Add or subtract the offset value. */
|
| 1143 |
|
|
if (Rvalue1 & 0x80000)
|
| 1144 |
|
|
Rvalue -= (~Rvalue1 + 1) & 0xfffff;
|
| 1145 |
|
|
else
|
| 1146 |
|
|
Rvalue += Rvalue1;
|
| 1147 |
|
|
|
| 1148 |
|
|
/* Check for range. */
|
| 1149 |
|
|
/* REVISIT: if ((long) Rvalue > 0xffffff
|
| 1150 |
|
|
|| (long) Rvalue < -0x800000). */
|
| 1151 |
|
|
if ((long) Rvalue > 0xffffff || (long) Rvalue < 0)
|
| 1152 |
|
|
return bfd_reloc_overflow;
|
| 1153 |
|
|
|
| 1154 |
|
|
bfd_put_16 (input_bfd, (bfd_get_16 (input_bfd, hit_data))
|
| 1155 |
|
|
| (((Rvalue >> 16) & 0xf) << 8), hit_data);
|
| 1156 |
|
|
bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2);
|
| 1157 |
|
|
}
|
| 1158 |
|
|
else
|
| 1159 |
|
|
{
|
| 1160 |
|
|
if (r_type == R_CR16_ABS24)
|
| 1161 |
|
|
{
|
| 1162 |
|
|
Rvalue1 = ((bfd_get_32 (input_bfd, hit_data) >> 16)
|
| 1163 |
|
|
| (((bfd_get_32 (input_bfd, hit_data) & 0xfff) >> 8) <<16)
|
| 1164 |
|
|
| (((bfd_get_32 (input_bfd, hit_data) & 0xf) <<20)));
|
| 1165 |
|
|
|
| 1166 |
|
|
/* Add or subtract the offset value. */
|
| 1167 |
|
|
if (Rvalue1 & 0x800000)
|
| 1168 |
|
|
Rvalue -= (~Rvalue1 + 1) & 0xffffff;
|
| 1169 |
|
|
else
|
| 1170 |
|
|
Rvalue += Rvalue1;
|
| 1171 |
|
|
|
| 1172 |
|
|
/* Check for Range. */
|
| 1173 |
|
|
if ((long) Rvalue > 0xffffff || (long) Rvalue < 0x0)
|
| 1174 |
|
|
return bfd_reloc_overflow;
|
| 1175 |
|
|
|
| 1176 |
|
|
Rvalue = ((((Rvalue >> 20) & 0xf) | (((Rvalue >> 16) & 0xf)<<8)
|
| 1177 |
|
|
| (bfd_get_32 (input_bfd, hit_data) & 0xf0f0))
|
| 1178 |
|
|
| ((Rvalue & 0xffff) << 16));
|
| 1179 |
|
|
}
|
| 1180 |
|
|
else if (r_type == R_CR16_DISP24)
|
| 1181 |
|
|
{
|
| 1182 |
|
|
Rvalue = ((((Rvalue >> 20)& 0xf) | (((Rvalue >>16) & 0xf)<<8)
|
| 1183 |
|
|
| (bfd_get_16 (input_bfd, hit_data)))
|
| 1184 |
|
|
| (((Rvalue & 0xfffe) | ((Rvalue >> 24) & 0x1)) << 16));
|
| 1185 |
|
|
}
|
| 1186 |
|
|
else if ((r_type == R_CR16_IMM32) || (r_type == R_CR16_IMM32a))
|
| 1187 |
|
|
{
|
| 1188 |
|
|
Rvalue1 =((((bfd_get_32 (input_bfd, hit_data)) >> 16) &0xffff)
|
| 1189 |
|
|
| (((bfd_get_32 (input_bfd, hit_data)) &0xffff)) << 16);
|
| 1190 |
|
|
|
| 1191 |
|
|
/* Add or subtract the offset value. */
|
| 1192 |
|
|
if (Rvalue1 & 0x80000000)
|
| 1193 |
|
|
Rvalue -= (~Rvalue1 + 1) & 0xffffffff;
|
| 1194 |
|
|
else
|
| 1195 |
|
|
Rvalue += Rvalue1;
|
| 1196 |
|
|
|
| 1197 |
|
|
/* Check for range. */
|
| 1198 |
|
|
if (Rvalue > 0xffffffff || (long) Rvalue < 0x0)
|
| 1199 |
|
|
return bfd_reloc_overflow;
|
| 1200 |
|
|
|
| 1201 |
|
|
Rvalue = (((Rvalue >> 16)& 0xffff) | (Rvalue & 0xffff) << 16);
|
| 1202 |
|
|
}
|
| 1203 |
|
|
else if (r_type == R_CR16_DISP24a)
|
| 1204 |
|
|
{
|
| 1205 |
|
|
Rvalue = (((Rvalue & 0xfffffe) | (Rvalue >> 23)));
|
| 1206 |
|
|
Rvalue = ((Rvalue >> 16) & 0xff) | ((Rvalue & 0xffff) << 16)
|
| 1207 |
|
|
| (bfd_get_32 (input_bfd, hit_data));
|
| 1208 |
|
|
}
|
| 1209 |
|
|
else if ((r_type == R_CR16_REGREL20)
|
| 1210 |
|
|
|| (r_type == R_CR16_REGREL20a))
|
| 1211 |
|
|
{
|
| 1212 |
|
|
Rvalue1 = ((bfd_get_32 (input_bfd, hit_data) >> 16)
|
| 1213 |
|
|
| (((bfd_get_32 (input_bfd, hit_data) & 0xfff) >> 8) <<16));
|
| 1214 |
|
|
/* Add or subtract the offset value. */
|
| 1215 |
|
|
if (Rvalue1 & 0x80000)
|
| 1216 |
|
|
Rvalue -= (~Rvalue1 + 1) & 0xfffff;
|
| 1217 |
|
|
else
|
| 1218 |
|
|
Rvalue += Rvalue1;
|
| 1219 |
|
|
|
| 1220 |
|
|
/* Check for range. */
|
| 1221 |
|
|
if ((long) Rvalue > 0xfffff || (long) Rvalue < 0x0)
|
| 1222 |
|
|
return bfd_reloc_overflow;
|
| 1223 |
|
|
|
| 1224 |
|
|
Rvalue = (((((Rvalue >> 20)& 0xf) | (((Rvalue >>16) & 0xf)<<8)
|
| 1225 |
|
|
| ((Rvalue & 0xffff) << 16)))
|
| 1226 |
|
|
| (bfd_get_32 (input_bfd, hit_data) & 0xf0ff));
|
| 1227 |
|
|
|
| 1228 |
|
|
}
|
| 1229 |
|
|
else if (r_type == R_CR16_NUM32)
|
| 1230 |
|
|
{
|
| 1231 |
|
|
Rvalue1 = (bfd_get_32 (input_bfd, hit_data));
|
| 1232 |
|
|
|
| 1233 |
|
|
/* Add or subtract the offset value */
|
| 1234 |
|
|
if (Rvalue1 & 0x80000000)
|
| 1235 |
|
|
Rvalue -= (~Rvalue1 + 1) & 0xffffffff;
|
| 1236 |
|
|
else
|
| 1237 |
|
|
Rvalue += Rvalue1;
|
| 1238 |
|
|
|
| 1239 |
|
|
/* Check for Ranga */
|
| 1240 |
|
|
if (Rvalue > 0xffffffff)
|
| 1241 |
|
|
return bfd_reloc_overflow;
|
| 1242 |
|
|
}
|
| 1243 |
|
|
|
| 1244 |
|
|
bfd_put_32 (input_bfd, Rvalue, hit_data);
|
| 1245 |
|
|
}
|
| 1246 |
|
|
break;
|
| 1247 |
|
|
|
| 1248 |
|
|
default:
|
| 1249 |
|
|
return bfd_reloc_notsupported;
|
| 1250 |
|
|
}
|
| 1251 |
|
|
|
| 1252 |
|
|
return bfd_reloc_ok;
|
| 1253 |
|
|
}
|
| 1254 |
|
|
|
| 1255 |
|
|
/* Delete some bytes from a section while relaxing. */
|
| 1256 |
|
|
|
| 1257 |
|
|
static bfd_boolean
|
| 1258 |
|
|
elf32_cr16_relax_delete_bytes (struct bfd_link_info *link_info, bfd *abfd,
|
| 1259 |
|
|
asection *sec, bfd_vma addr, int count)
|
| 1260 |
|
|
{
|
| 1261 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 1262 |
|
|
unsigned int sec_shndx;
|
| 1263 |
|
|
bfd_byte *contents;
|
| 1264 |
|
|
Elf_Internal_Rela *irel, *irelend;
|
| 1265 |
|
|
Elf_Internal_Rela *irelalign;
|
| 1266 |
|
|
bfd_vma toaddr;
|
| 1267 |
|
|
Elf_Internal_Sym *isym;
|
| 1268 |
|
|
Elf_Internal_Sym *isymend;
|
| 1269 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 1270 |
|
|
struct elf_link_hash_entry **end_hashes;
|
| 1271 |
|
|
struct elf_link_hash_entry **start_hashes;
|
| 1272 |
|
|
unsigned int symcount;
|
| 1273 |
|
|
|
| 1274 |
|
|
sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
|
| 1275 |
|
|
|
| 1276 |
|
|
contents = elf_section_data (sec)->this_hdr.contents;
|
| 1277 |
|
|
|
| 1278 |
|
|
/* The deletion must stop at the next ALIGN reloc for an aligment
|
| 1279 |
|
|
power larger than the number of bytes we are deleting. */
|
| 1280 |
|
|
irelalign = NULL;
|
| 1281 |
|
|
toaddr = sec->size;
|
| 1282 |
|
|
|
| 1283 |
|
|
irel = elf_section_data (sec)->relocs;
|
| 1284 |
|
|
irelend = irel + sec->reloc_count;
|
| 1285 |
|
|
|
| 1286 |
|
|
/* Actually delete the bytes. */
|
| 1287 |
|
|
memmove (contents + addr, contents + addr + count,
|
| 1288 |
|
|
(size_t) (toaddr - addr - count));
|
| 1289 |
|
|
sec->size -= count;
|
| 1290 |
|
|
|
| 1291 |
|
|
/* Adjust all the relocs. */
|
| 1292 |
|
|
for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
|
| 1293 |
|
|
/* Get the new reloc address. */
|
| 1294 |
|
|
if ((irel->r_offset > addr && irel->r_offset < toaddr))
|
| 1295 |
|
|
irel->r_offset -= count;
|
| 1296 |
|
|
|
| 1297 |
|
|
/* Adjust the local symbols defined in this section. */
|
| 1298 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
| 1299 |
|
|
isym = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 1300 |
|
|
for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
|
| 1301 |
|
|
{
|
| 1302 |
|
|
if (isym->st_shndx == sec_shndx
|
| 1303 |
|
|
&& isym->st_value > addr
|
| 1304 |
|
|
&& isym->st_value < toaddr)
|
| 1305 |
|
|
{
|
| 1306 |
|
|
/* Adjust the addend of SWITCH relocations in this section,
|
| 1307 |
|
|
which reference this local symbol. */
|
| 1308 |
|
|
#if 0
|
| 1309 |
|
|
for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
|
| 1310 |
|
|
{
|
| 1311 |
|
|
unsigned long r_symndx;
|
| 1312 |
|
|
Elf_Internal_Sym *rsym;
|
| 1313 |
|
|
bfd_vma addsym, subsym;
|
| 1314 |
|
|
|
| 1315 |
|
|
/* Skip if not a SWITCH relocation. */
|
| 1316 |
|
|
if (ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH8
|
| 1317 |
|
|
&& ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH16
|
| 1318 |
|
|
&& ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH32)
|
| 1319 |
|
|
continue;
|
| 1320 |
|
|
|
| 1321 |
|
|
r_symndx = ELF32_R_SYM (irel->r_info);
|
| 1322 |
|
|
rsym = (Elf_Internal_Sym *) symtab_hdr->contents + r_symndx;
|
| 1323 |
|
|
|
| 1324 |
|
|
/* Skip if not the local adjusted symbol. */
|
| 1325 |
|
|
if (rsym != isym)
|
| 1326 |
|
|
continue;
|
| 1327 |
|
|
|
| 1328 |
|
|
addsym = isym->st_value;
|
| 1329 |
|
|
subsym = addsym - irel->r_addend;
|
| 1330 |
|
|
|
| 1331 |
|
|
/* Fix the addend only when -->> (addsym > addr >= subsym). */
|
| 1332 |
|
|
if (subsym <= addr)
|
| 1333 |
|
|
irel->r_addend -= count;
|
| 1334 |
|
|
else
|
| 1335 |
|
|
continue;
|
| 1336 |
|
|
}
|
| 1337 |
|
|
#endif
|
| 1338 |
|
|
|
| 1339 |
|
|
isym->st_value -= count;
|
| 1340 |
|
|
}
|
| 1341 |
|
|
}
|
| 1342 |
|
|
|
| 1343 |
|
|
/* Now adjust the global symbols defined in this section. */
|
| 1344 |
|
|
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
| 1345 |
|
|
- symtab_hdr->sh_info);
|
| 1346 |
|
|
sym_hashes = start_hashes = elf_sym_hashes (abfd);
|
| 1347 |
|
|
end_hashes = sym_hashes + symcount;
|
| 1348 |
|
|
|
| 1349 |
|
|
for (; sym_hashes < end_hashes; sym_hashes++)
|
| 1350 |
|
|
{
|
| 1351 |
|
|
struct elf_link_hash_entry *sym_hash = *sym_hashes;
|
| 1352 |
|
|
|
| 1353 |
|
|
/* The '--wrap SYMBOL' option is causing a pain when the object file,
|
| 1354 |
|
|
containing the definition of __wrap_SYMBOL, includes a direct
|
| 1355 |
|
|
call to SYMBOL as well. Since both __wrap_SYMBOL and SYMBOL reference
|
| 1356 |
|
|
the same symbol (which is __wrap_SYMBOL), but still exist as two
|
| 1357 |
|
|
different symbols in 'sym_hashes', we don't want to adjust
|
| 1358 |
|
|
the global symbol __wrap_SYMBOL twice.
|
| 1359 |
|
|
This check is only relevant when symbols are being wrapped. */
|
| 1360 |
|
|
if (link_info->wrap_hash != NULL)
|
| 1361 |
|
|
{
|
| 1362 |
|
|
struct elf_link_hash_entry **cur_sym_hashes;
|
| 1363 |
|
|
|
| 1364 |
|
|
/* Loop only over the symbols whom been already checked. */
|
| 1365 |
|
|
for (cur_sym_hashes = start_hashes; cur_sym_hashes < sym_hashes;
|
| 1366 |
|
|
cur_sym_hashes++)
|
| 1367 |
|
|
/* If the current symbol is identical to 'sym_hash', that means
|
| 1368 |
|
|
the symbol was already adjusted (or at least checked). */
|
| 1369 |
|
|
if (*cur_sym_hashes == sym_hash)
|
| 1370 |
|
|
break;
|
| 1371 |
|
|
|
| 1372 |
|
|
/* Don't adjust the symbol again. */
|
| 1373 |
|
|
if (cur_sym_hashes < sym_hashes)
|
| 1374 |
|
|
continue;
|
| 1375 |
|
|
}
|
| 1376 |
|
|
|
| 1377 |
|
|
if ((sym_hash->root.type == bfd_link_hash_defined
|
| 1378 |
|
|
|| sym_hash->root.type == bfd_link_hash_defweak)
|
| 1379 |
|
|
&& sym_hash->root.u.def.section == sec
|
| 1380 |
|
|
&& sym_hash->root.u.def.value > addr
|
| 1381 |
|
|
&& sym_hash->root.u.def.value < toaddr)
|
| 1382 |
|
|
sym_hash->root.u.def.value -= count;
|
| 1383 |
|
|
}
|
| 1384 |
|
|
|
| 1385 |
|
|
return TRUE;
|
| 1386 |
|
|
}
|
| 1387 |
|
|
|
| 1388 |
|
|
/* Relocate a CR16 ELF section. */
|
| 1389 |
|
|
|
| 1390 |
|
|
static bfd_boolean
|
| 1391 |
|
|
elf32_cr16_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
|
| 1392 |
|
|
bfd *input_bfd, asection *input_section,
|
| 1393 |
|
|
bfd_byte *contents, Elf_Internal_Rela *relocs,
|
| 1394 |
|
|
Elf_Internal_Sym *local_syms,
|
| 1395 |
|
|
asection **local_sections)
|
| 1396 |
|
|
{
|
| 1397 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 1398 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 1399 |
|
|
Elf_Internal_Rela *rel, *relend;
|
| 1400 |
|
|
|
| 1401 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
| 1402 |
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
| 1403 |
|
|
|
| 1404 |
|
|
rel = relocs;
|
| 1405 |
|
|
relend = relocs + input_section->reloc_count;
|
| 1406 |
|
|
for (; rel < relend; rel++)
|
| 1407 |
|
|
{
|
| 1408 |
|
|
int r_type;
|
| 1409 |
|
|
reloc_howto_type *howto;
|
| 1410 |
|
|
unsigned long r_symndx;
|
| 1411 |
|
|
Elf_Internal_Sym *sym;
|
| 1412 |
|
|
asection *sec;
|
| 1413 |
|
|
struct elf_link_hash_entry *h;
|
| 1414 |
|
|
bfd_vma relocation;
|
| 1415 |
|
|
bfd_reloc_status_type r;
|
| 1416 |
|
|
|
| 1417 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 1418 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 1419 |
|
|
howto = cr16_elf_howto_table + (r_type);
|
| 1420 |
|
|
|
| 1421 |
|
|
h = NULL;
|
| 1422 |
|
|
sym = NULL;
|
| 1423 |
|
|
sec = NULL;
|
| 1424 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 1425 |
|
|
{
|
| 1426 |
|
|
sym = local_syms + r_symndx;
|
| 1427 |
|
|
sec = local_sections[r_symndx];
|
| 1428 |
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
| 1429 |
|
|
}
|
| 1430 |
|
|
else
|
| 1431 |
|
|
{
|
| 1432 |
|
|
bfd_boolean unresolved_reloc, warned;
|
| 1433 |
|
|
|
| 1434 |
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
| 1435 |
|
|
r_symndx, symtab_hdr, sym_hashes,
|
| 1436 |
|
|
h, sec, relocation,
|
| 1437 |
|
|
unresolved_reloc, warned);
|
| 1438 |
|
|
}
|
| 1439 |
|
|
|
| 1440 |
|
|
if (sec != NULL && elf_discarded_section (sec))
|
| 1441 |
|
|
{
|
| 1442 |
|
|
/* For relocs against symbols from removed linkonce sections,
|
| 1443 |
|
|
or sections discarded by a linker script, we just want the
|
| 1444 |
|
|
section contents zeroed. Avoid any special processing. */
|
| 1445 |
|
|
_bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
|
| 1446 |
|
|
rel->r_info = 0;
|
| 1447 |
|
|
rel->r_addend = 0;
|
| 1448 |
|
|
continue;
|
| 1449 |
|
|
}
|
| 1450 |
|
|
|
| 1451 |
|
|
if (info->relocatable)
|
| 1452 |
|
|
continue;
|
| 1453 |
|
|
|
| 1454 |
|
|
r = cr16_elf_final_link_relocate (howto, input_bfd, output_bfd,
|
| 1455 |
|
|
input_section,
|
| 1456 |
|
|
contents, rel->r_offset,
|
| 1457 |
|
|
relocation, rel->r_addend,
|
| 1458 |
|
|
(struct elf_link_hash_entry *) h,
|
| 1459 |
|
|
r_symndx,
|
| 1460 |
|
|
info, sec, h == NULL);
|
| 1461 |
|
|
|
| 1462 |
|
|
if (r != bfd_reloc_ok)
|
| 1463 |
|
|
{
|
| 1464 |
|
|
const char *name;
|
| 1465 |
|
|
const char *msg = NULL;
|
| 1466 |
|
|
|
| 1467 |
|
|
if (h != NULL)
|
| 1468 |
|
|
name = h->root.root.string;
|
| 1469 |
|
|
else
|
| 1470 |
|
|
{
|
| 1471 |
|
|
name = (bfd_elf_string_from_elf_section
|
| 1472 |
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name));
|
| 1473 |
|
|
if (name == NULL || *name == '\0')
|
| 1474 |
|
|
name = bfd_section_name (input_bfd, sec);
|
| 1475 |
|
|
}
|
| 1476 |
|
|
|
| 1477 |
|
|
switch (r)
|
| 1478 |
|
|
{
|
| 1479 |
|
|
case bfd_reloc_overflow:
|
| 1480 |
|
|
if (!((*info->callbacks->reloc_overflow)
|
| 1481 |
|
|
(info, (h ? &h->root : NULL), name, howto->name,
|
| 1482 |
|
|
(bfd_vma) 0, input_bfd, input_section,
|
| 1483 |
|
|
rel->r_offset)))
|
| 1484 |
|
|
return FALSE;
|
| 1485 |
|
|
break;
|
| 1486 |
|
|
|
| 1487 |
|
|
case bfd_reloc_undefined:
|
| 1488 |
|
|
if (!((*info->callbacks->undefined_symbol)
|
| 1489 |
|
|
(info, name, input_bfd, input_section,
|
| 1490 |
|
|
rel->r_offset, TRUE)))
|
| 1491 |
|
|
return FALSE;
|
| 1492 |
|
|
break;
|
| 1493 |
|
|
|
| 1494 |
|
|
case bfd_reloc_outofrange:
|
| 1495 |
|
|
msg = _("internal error: out of range error");
|
| 1496 |
|
|
goto common_error;
|
| 1497 |
|
|
|
| 1498 |
|
|
case bfd_reloc_notsupported:
|
| 1499 |
|
|
msg = _("internal error: unsupported relocation error");
|
| 1500 |
|
|
goto common_error;
|
| 1501 |
|
|
|
| 1502 |
|
|
case bfd_reloc_dangerous:
|
| 1503 |
|
|
msg = _("internal error: dangerous error");
|
| 1504 |
|
|
goto common_error;
|
| 1505 |
|
|
|
| 1506 |
|
|
default:
|
| 1507 |
|
|
msg = _("internal error: unknown error");
|
| 1508 |
|
|
/* Fall through. */
|
| 1509 |
|
|
|
| 1510 |
|
|
common_error:
|
| 1511 |
|
|
if (!((*info->callbacks->warning)
|
| 1512 |
|
|
(info, msg, name, input_bfd, input_section,
|
| 1513 |
|
|
rel->r_offset)))
|
| 1514 |
|
|
return FALSE;
|
| 1515 |
|
|
break;
|
| 1516 |
|
|
}
|
| 1517 |
|
|
}
|
| 1518 |
|
|
}
|
| 1519 |
|
|
|
| 1520 |
|
|
return TRUE;
|
| 1521 |
|
|
}
|
| 1522 |
|
|
|
| 1523 |
|
|
/* This is a version of bfd_generic_get_relocated_section_contents
|
| 1524 |
|
|
which uses elf32_cr16_relocate_section. */
|
| 1525 |
|
|
|
| 1526 |
|
|
static bfd_byte *
|
| 1527 |
|
|
elf32_cr16_get_relocated_section_contents (bfd *output_bfd,
|
| 1528 |
|
|
struct bfd_link_info *link_info,
|
| 1529 |
|
|
struct bfd_link_order *link_order,
|
| 1530 |
|
|
bfd_byte *data,
|
| 1531 |
|
|
bfd_boolean relocatable,
|
| 1532 |
|
|
asymbol **symbols)
|
| 1533 |
|
|
{
|
| 1534 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 1535 |
|
|
asection *input_section = link_order->u.indirect.section;
|
| 1536 |
|
|
bfd *input_bfd = input_section->owner;
|
| 1537 |
|
|
asection **sections = NULL;
|
| 1538 |
|
|
Elf_Internal_Rela *internal_relocs = NULL;
|
| 1539 |
|
|
Elf_Internal_Sym *isymbuf = NULL;
|
| 1540 |
|
|
|
| 1541 |
|
|
/* We only need to handle the case of relaxing, or of having a
|
| 1542 |
|
|
particular set of section contents, specially. */
|
| 1543 |
|
|
if (relocatable
|
| 1544 |
|
|
|| elf_section_data (input_section)->this_hdr.contents == NULL)
|
| 1545 |
|
|
return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
|
| 1546 |
|
|
link_order, data,
|
| 1547 |
|
|
relocatable,
|
| 1548 |
|
|
symbols);
|
| 1549 |
|
|
|
| 1550 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
| 1551 |
|
|
|
| 1552 |
|
|
memcpy (data, elf_section_data (input_section)->this_hdr.contents,
|
| 1553 |
|
|
(size_t) input_section->size);
|
| 1554 |
|
|
|
| 1555 |
|
|
if ((input_section->flags & SEC_RELOC) != 0
|
| 1556 |
|
|
&& input_section->reloc_count > 0)
|
| 1557 |
|
|
{
|
| 1558 |
|
|
Elf_Internal_Sym *isym;
|
| 1559 |
|
|
Elf_Internal_Sym *isymend;
|
| 1560 |
|
|
asection **secpp;
|
| 1561 |
|
|
bfd_size_type amt;
|
| 1562 |
|
|
|
| 1563 |
|
|
internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section,
|
| 1564 |
|
|
NULL, NULL, FALSE);
|
| 1565 |
|
|
if (internal_relocs == NULL)
|
| 1566 |
|
|
goto error_return;
|
| 1567 |
|
|
|
| 1568 |
|
|
if (symtab_hdr->sh_info != 0)
|
| 1569 |
|
|
{
|
| 1570 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 1571 |
|
|
if (isymbuf == NULL)
|
| 1572 |
|
|
isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
|
| 1573 |
|
|
symtab_hdr->sh_info, 0,
|
| 1574 |
|
|
NULL, NULL, NULL);
|
| 1575 |
|
|
if (isymbuf == NULL)
|
| 1576 |
|
|
goto error_return;
|
| 1577 |
|
|
}
|
| 1578 |
|
|
|
| 1579 |
|
|
amt = symtab_hdr->sh_info;
|
| 1580 |
|
|
amt *= sizeof (asection *);
|
| 1581 |
|
|
sections = bfd_malloc (amt);
|
| 1582 |
|
|
if (sections == NULL && amt != 0)
|
| 1583 |
|
|
goto error_return;
|
| 1584 |
|
|
|
| 1585 |
|
|
isymend = isymbuf + symtab_hdr->sh_info;
|
| 1586 |
|
|
for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
|
| 1587 |
|
|
{
|
| 1588 |
|
|
asection *isec;
|
| 1589 |
|
|
|
| 1590 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
| 1591 |
|
|
isec = bfd_und_section_ptr;
|
| 1592 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
| 1593 |
|
|
isec = bfd_abs_section_ptr;
|
| 1594 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
| 1595 |
|
|
isec = bfd_com_section_ptr;
|
| 1596 |
|
|
else
|
| 1597 |
|
|
isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
|
| 1598 |
|
|
|
| 1599 |
|
|
*secpp = isec;
|
| 1600 |
|
|
}
|
| 1601 |
|
|
|
| 1602 |
|
|
if (! elf32_cr16_relocate_section (output_bfd, link_info, input_bfd,
|
| 1603 |
|
|
input_section, data, internal_relocs,
|
| 1604 |
|
|
isymbuf, sections))
|
| 1605 |
|
|
goto error_return;
|
| 1606 |
|
|
|
| 1607 |
|
|
if (sections != NULL)
|
| 1608 |
|
|
free (sections);
|
| 1609 |
|
|
if (isymbuf != NULL
|
| 1610 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
| 1611 |
|
|
free (isymbuf);
|
| 1612 |
|
|
if (elf_section_data (input_section)->relocs != internal_relocs)
|
| 1613 |
|
|
free (internal_relocs);
|
| 1614 |
|
|
}
|
| 1615 |
|
|
|
| 1616 |
|
|
return data;
|
| 1617 |
|
|
|
| 1618 |
|
|
error_return:
|
| 1619 |
|
|
if (sections != NULL)
|
| 1620 |
|
|
free (sections);
|
| 1621 |
|
|
if (isymbuf != NULL
|
| 1622 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
| 1623 |
|
|
free (isymbuf);
|
| 1624 |
|
|
if (internal_relocs != NULL
|
| 1625 |
|
|
&& elf_section_data (input_section)->relocs != internal_relocs)
|
| 1626 |
|
|
free (internal_relocs);
|
| 1627 |
|
|
return NULL;
|
| 1628 |
|
|
}
|
| 1629 |
|
|
|
| 1630 |
|
|
/* Assorted hash table functions. */
|
| 1631 |
|
|
|
| 1632 |
|
|
/* Initialize an entry in the link hash table. */
|
| 1633 |
|
|
|
| 1634 |
|
|
/* Create an entry in an CR16 ELF linker hash table. */
|
| 1635 |
|
|
|
| 1636 |
|
|
static struct bfd_hash_entry *
|
| 1637 |
|
|
elf32_cr16_link_hash_newfunc (struct bfd_hash_entry *entry,
|
| 1638 |
|
|
struct bfd_hash_table *table,
|
| 1639 |
|
|
const char *string)
|
| 1640 |
|
|
{
|
| 1641 |
|
|
struct elf32_cr16_link_hash_entry *ret =
|
| 1642 |
|
|
(struct elf32_cr16_link_hash_entry *) entry;
|
| 1643 |
|
|
|
| 1644 |
|
|
/* Allocate the structure if it has not already been allocated by a
|
| 1645 |
|
|
subclass. */
|
| 1646 |
|
|
if (ret == (struct elf32_cr16_link_hash_entry *) NULL)
|
| 1647 |
|
|
ret = ((struct elf32_cr16_link_hash_entry *)
|
| 1648 |
|
|
bfd_hash_allocate (table,
|
| 1649 |
|
|
sizeof (struct elf32_cr16_link_hash_entry)));
|
| 1650 |
|
|
if (ret == (struct elf32_cr16_link_hash_entry *) NULL)
|
| 1651 |
|
|
return (struct bfd_hash_entry *) ret;
|
| 1652 |
|
|
|
| 1653 |
|
|
/* Call the allocation method of the superclass. */
|
| 1654 |
|
|
ret = ((struct elf32_cr16_link_hash_entry *)
|
| 1655 |
|
|
_bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
|
| 1656 |
|
|
table, string));
|
| 1657 |
|
|
if (ret != (struct elf32_cr16_link_hash_entry *) NULL)
|
| 1658 |
|
|
{
|
| 1659 |
|
|
ret->direct_calls = 0;
|
| 1660 |
|
|
ret->stack_size = 0;
|
| 1661 |
|
|
ret->movm_args = 0;
|
| 1662 |
|
|
ret->movm_stack_size = 0;
|
| 1663 |
|
|
ret->flags = 0;
|
| 1664 |
|
|
ret->value = 0;
|
| 1665 |
|
|
}
|
| 1666 |
|
|
|
| 1667 |
|
|
return (struct bfd_hash_entry *) ret;
|
| 1668 |
|
|
}
|
| 1669 |
|
|
|
| 1670 |
|
|
/* Create an cr16 ELF linker hash table. */
|
| 1671 |
|
|
|
| 1672 |
|
|
static struct bfd_link_hash_table *
|
| 1673 |
|
|
elf32_cr16_link_hash_table_create (bfd *abfd)
|
| 1674 |
|
|
{
|
| 1675 |
|
|
struct elf_link_hash_table *ret;
|
| 1676 |
|
|
bfd_size_type amt = sizeof (struct elf_link_hash_table);
|
| 1677 |
|
|
|
| 1678 |
|
|
ret = (struct elf_link_hash_table *) bfd_malloc (amt);
|
| 1679 |
|
|
if (ret == (struct elf_link_hash_table *) NULL)
|
| 1680 |
|
|
return NULL;
|
| 1681 |
|
|
|
| 1682 |
|
|
if (!_bfd_elf_link_hash_table_init (ret, abfd,
|
| 1683 |
|
|
elf32_cr16_link_hash_newfunc,
|
| 1684 |
|
|
sizeof (struct elf32_cr16_link_hash_entry),
|
| 1685 |
|
|
GENERIC_ELF_DATA))
|
| 1686 |
|
|
{
|
| 1687 |
|
|
free (ret);
|
| 1688 |
|
|
return NULL;
|
| 1689 |
|
|
}
|
| 1690 |
|
|
|
| 1691 |
|
|
return &ret->root;
|
| 1692 |
|
|
}
|
| 1693 |
|
|
|
| 1694 |
|
|
/* Free an cr16 ELF linker hash table. */
|
| 1695 |
|
|
|
| 1696 |
|
|
static void
|
| 1697 |
|
|
elf32_cr16_link_hash_table_free (struct bfd_link_hash_table *hash)
|
| 1698 |
|
|
{
|
| 1699 |
|
|
struct elf_link_hash_table *ret
|
| 1700 |
|
|
= (struct elf_link_hash_table *) hash;
|
| 1701 |
|
|
|
| 1702 |
|
|
_bfd_generic_link_hash_table_free
|
| 1703 |
|
|
((struct bfd_link_hash_table *) ret);
|
| 1704 |
|
|
}
|
| 1705 |
|
|
|
| 1706 |
|
|
static unsigned long
|
| 1707 |
|
|
elf_cr16_mach (flagword flags)
|
| 1708 |
|
|
{
|
| 1709 |
|
|
switch (flags)
|
| 1710 |
|
|
{
|
| 1711 |
|
|
case EM_CR16:
|
| 1712 |
|
|
default:
|
| 1713 |
|
|
return bfd_mach_cr16;
|
| 1714 |
|
|
}
|
| 1715 |
|
|
}
|
| 1716 |
|
|
|
| 1717 |
|
|
/* The final processing done just before writing out a CR16 ELF object
|
| 1718 |
|
|
file. This gets the CR16 architecture right based on the machine
|
| 1719 |
|
|
number. */
|
| 1720 |
|
|
|
| 1721 |
|
|
static void
|
| 1722 |
|
|
_bfd_cr16_elf_final_write_processing (bfd *abfd,
|
| 1723 |
|
|
bfd_boolean linker ATTRIBUTE_UNUSED)
|
| 1724 |
|
|
{
|
| 1725 |
|
|
unsigned long val;
|
| 1726 |
|
|
switch (bfd_get_mach (abfd))
|
| 1727 |
|
|
{
|
| 1728 |
|
|
default:
|
| 1729 |
|
|
case bfd_mach_cr16:
|
| 1730 |
|
|
val = EM_CR16;
|
| 1731 |
|
|
break;
|
| 1732 |
|
|
}
|
| 1733 |
|
|
|
| 1734 |
|
|
|
| 1735 |
|
|
elf_elfheader (abfd)->e_flags |= val;
|
| 1736 |
|
|
}
|
| 1737 |
|
|
|
| 1738 |
|
|
|
| 1739 |
|
|
static bfd_boolean
|
| 1740 |
|
|
_bfd_cr16_elf_object_p (bfd *abfd)
|
| 1741 |
|
|
{
|
| 1742 |
|
|
bfd_default_set_arch_mach (abfd, bfd_arch_cr16,
|
| 1743 |
|
|
elf_cr16_mach (elf_elfheader (abfd)->e_flags));
|
| 1744 |
|
|
return TRUE;
|
| 1745 |
|
|
}
|
| 1746 |
|
|
|
| 1747 |
|
|
/* Merge backend specific data from an object file to the output
|
| 1748 |
|
|
object file when linking. */
|
| 1749 |
|
|
|
| 1750 |
|
|
static bfd_boolean
|
| 1751 |
|
|
_bfd_cr16_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
|
| 1752 |
|
|
{
|
| 1753 |
|
|
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
| 1754 |
|
|
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
| 1755 |
|
|
return TRUE;
|
| 1756 |
|
|
|
| 1757 |
|
|
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
|
| 1758 |
|
|
&& bfd_get_mach (obfd) < bfd_get_mach (ibfd))
|
| 1759 |
|
|
{
|
| 1760 |
|
|
if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
|
| 1761 |
|
|
bfd_get_mach (ibfd)))
|
| 1762 |
|
|
return FALSE;
|
| 1763 |
|
|
}
|
| 1764 |
|
|
|
| 1765 |
|
|
return TRUE;
|
| 1766 |
|
|
}
|
| 1767 |
|
|
|
| 1768 |
|
|
|
| 1769 |
|
|
/* This function handles relaxing for the CR16.
|
| 1770 |
|
|
|
| 1771 |
|
|
There's quite a few relaxing opportunites available on the CR16:
|
| 1772 |
|
|
|
| 1773 |
|
|
* bcond:24 -> bcond:16 1 byte
|
| 1774 |
|
|
* bcond:16 -> bcond:8 1 byte
|
| 1775 |
|
|
* arithmetic imm32 -> arithmetic imm20 12 bits
|
| 1776 |
|
|
* arithmetic imm20/imm16 -> arithmetic imm4 12/16 bits
|
| 1777 |
|
|
|
| 1778 |
|
|
Symbol- and reloc-reading infrastructure copied from elf-m10200.c. */
|
| 1779 |
|
|
|
| 1780 |
|
|
static bfd_boolean
|
| 1781 |
|
|
elf32_cr16_relax_section (bfd *abfd, asection *sec,
|
| 1782 |
|
|
struct bfd_link_info *link_info, bfd_boolean *again)
|
| 1783 |
|
|
{
|
| 1784 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 1785 |
|
|
Elf_Internal_Rela *internal_relocs;
|
| 1786 |
|
|
Elf_Internal_Rela *irel, *irelend;
|
| 1787 |
|
|
bfd_byte *contents = NULL;
|
| 1788 |
|
|
Elf_Internal_Sym *isymbuf = NULL;
|
| 1789 |
|
|
|
| 1790 |
|
|
/* Assume nothing changes. */
|
| 1791 |
|
|
*again = FALSE;
|
| 1792 |
|
|
|
| 1793 |
|
|
/* We don't have to do anything for a relocatable link, if
|
| 1794 |
|
|
this section does not have relocs, or if this is not a
|
| 1795 |
|
|
code section. */
|
| 1796 |
|
|
if (link_info->relocatable
|
| 1797 |
|
|
|| (sec->flags & SEC_RELOC) == 0
|
| 1798 |
|
|
|| sec->reloc_count == 0
|
| 1799 |
|
|
|| (sec->flags & SEC_CODE) == 0)
|
| 1800 |
|
|
return TRUE;
|
| 1801 |
|
|
|
| 1802 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
| 1803 |
|
|
|
| 1804 |
|
|
/* Get a copy of the native relocations. */
|
| 1805 |
|
|
internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
|
| 1806 |
|
|
link_info->keep_memory);
|
| 1807 |
|
|
if (internal_relocs == NULL)
|
| 1808 |
|
|
goto error_return;
|
| 1809 |
|
|
|
| 1810 |
|
|
/* Walk through them looking for relaxing opportunities. */
|
| 1811 |
|
|
irelend = internal_relocs + sec->reloc_count;
|
| 1812 |
|
|
for (irel = internal_relocs; irel < irelend; irel++)
|
| 1813 |
|
|
{
|
| 1814 |
|
|
bfd_vma symval;
|
| 1815 |
|
|
|
| 1816 |
|
|
/* If this isn't something that can be relaxed, then ignore
|
| 1817 |
|
|
this reloc. */
|
| 1818 |
|
|
if (ELF32_R_TYPE (irel->r_info) != (int) R_CR16_DISP16
|
| 1819 |
|
|
&& ELF32_R_TYPE (irel->r_info) != (int) R_CR16_DISP24
|
| 1820 |
|
|
&& ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM32
|
| 1821 |
|
|
&& ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM20
|
| 1822 |
|
|
&& ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM16)
|
| 1823 |
|
|
continue;
|
| 1824 |
|
|
|
| 1825 |
|
|
/* Get the section contents if we haven't done so already. */
|
| 1826 |
|
|
if (contents == NULL)
|
| 1827 |
|
|
{
|
| 1828 |
|
|
/* Get cached copy if it exists. */
|
| 1829 |
|
|
if (elf_section_data (sec)->this_hdr.contents != NULL)
|
| 1830 |
|
|
contents = elf_section_data (sec)->this_hdr.contents;
|
| 1831 |
|
|
/* Go get them off disk. */
|
| 1832 |
|
|
else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
|
| 1833 |
|
|
goto error_return;
|
| 1834 |
|
|
}
|
| 1835 |
|
|
|
| 1836 |
|
|
/* Read this BFD's local symbols if we haven't done so already. */
|
| 1837 |
|
|
if (isymbuf == NULL && symtab_hdr->sh_info != 0)
|
| 1838 |
|
|
{
|
| 1839 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 1840 |
|
|
if (isymbuf == NULL)
|
| 1841 |
|
|
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
|
| 1842 |
|
|
symtab_hdr->sh_info, 0,
|
| 1843 |
|
|
NULL, NULL, NULL);
|
| 1844 |
|
|
if (isymbuf == NULL)
|
| 1845 |
|
|
goto error_return;
|
| 1846 |
|
|
}
|
| 1847 |
|
|
|
| 1848 |
|
|
/* Get the value of the symbol referred to by the reloc. */
|
| 1849 |
|
|
if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
|
| 1850 |
|
|
{
|
| 1851 |
|
|
/* A local symbol. */
|
| 1852 |
|
|
Elf_Internal_Sym *isym;
|
| 1853 |
|
|
asection *sym_sec;
|
| 1854 |
|
|
|
| 1855 |
|
|
isym = isymbuf + ELF32_R_SYM (irel->r_info);
|
| 1856 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
| 1857 |
|
|
sym_sec = bfd_und_section_ptr;
|
| 1858 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
| 1859 |
|
|
sym_sec = bfd_abs_section_ptr;
|
| 1860 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
| 1861 |
|
|
sym_sec = bfd_com_section_ptr;
|
| 1862 |
|
|
else
|
| 1863 |
|
|
sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
| 1864 |
|
|
symval = (isym->st_value
|
| 1865 |
|
|
+ sym_sec->output_section->vma
|
| 1866 |
|
|
+ sym_sec->output_offset);
|
| 1867 |
|
|
}
|
| 1868 |
|
|
else
|
| 1869 |
|
|
{
|
| 1870 |
|
|
unsigned long indx;
|
| 1871 |
|
|
struct elf_link_hash_entry *h;
|
| 1872 |
|
|
|
| 1873 |
|
|
/* An external symbol. */
|
| 1874 |
|
|
indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
|
| 1875 |
|
|
h = elf_sym_hashes (abfd)[indx];
|
| 1876 |
|
|
BFD_ASSERT (h != NULL);
|
| 1877 |
|
|
|
| 1878 |
|
|
if (h->root.type != bfd_link_hash_defined
|
| 1879 |
|
|
&& h->root.type != bfd_link_hash_defweak)
|
| 1880 |
|
|
/* This appears to be a reference to an undefined
|
| 1881 |
|
|
symbol. Just ignore it--it will be caught by the
|
| 1882 |
|
|
regular reloc processing. */
|
| 1883 |
|
|
continue;
|
| 1884 |
|
|
|
| 1885 |
|
|
symval = (h->root.u.def.value
|
| 1886 |
|
|
+ h->root.u.def.section->output_section->vma
|
| 1887 |
|
|
+ h->root.u.def.section->output_offset);
|
| 1888 |
|
|
}
|
| 1889 |
|
|
|
| 1890 |
|
|
/* For simplicity of coding, we are going to modify the section
|
| 1891 |
|
|
contents, the section relocs, and the BFD symbol table. We
|
| 1892 |
|
|
must tell the rest of the code not to free up this
|
| 1893 |
|
|
information. It would be possible to instead create a table
|
| 1894 |
|
|
of changes which have to be made, as is done in coff-mips.c;
|
| 1895 |
|
|
that would be more work, but would require less memory when
|
| 1896 |
|
|
the linker is run. */
|
| 1897 |
|
|
|
| 1898 |
|
|
/* Try to turn a 24 branch/call into a 16bit relative
|
| 1899 |
|
|
branch/call. */
|
| 1900 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_DISP24)
|
| 1901 |
|
|
{
|
| 1902 |
|
|
bfd_vma value = symval;
|
| 1903 |
|
|
|
| 1904 |
|
|
/* Deal with pc-relative gunk. */
|
| 1905 |
|
|
value -= (sec->output_section->vma + sec->output_offset);
|
| 1906 |
|
|
value -= irel->r_offset;
|
| 1907 |
|
|
value += irel->r_addend;
|
| 1908 |
|
|
|
| 1909 |
|
|
/* See if the value will fit in 16 bits, note the high value is
|
| 1910 |
|
|
0xfffe + 2 as the target will be two bytes closer if we are
|
| 1911 |
|
|
able to relax. */
|
| 1912 |
|
|
if ((long) value < 0x10000 && (long) value > -0x10002)
|
| 1913 |
|
|
{
|
| 1914 |
|
|
unsigned int code;
|
| 1915 |
|
|
|
| 1916 |
|
|
/* Get the opcode. */
|
| 1917 |
|
|
code = (unsigned int) bfd_get_32 (abfd, contents + irel->r_offset);
|
| 1918 |
|
|
|
| 1919 |
|
|
/* Verify it's a 'bcond' and fix the opcode. */
|
| 1920 |
|
|
if ((code & 0xffff) == 0x0010)
|
| 1921 |
|
|
bfd_put_16 (abfd, 0x1800 | ((0xf & (code >> 20)) << 4), contents + irel->r_offset);
|
| 1922 |
|
|
else
|
| 1923 |
|
|
continue;
|
| 1924 |
|
|
|
| 1925 |
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
| 1926 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 1927 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 1928 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 1929 |
|
|
|
| 1930 |
|
|
/* Fix the relocation's type. */
|
| 1931 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 1932 |
|
|
R_CR16_DISP16);
|
| 1933 |
|
|
|
| 1934 |
|
|
/* Delete two bytes of data. */
|
| 1935 |
|
|
if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
|
| 1936 |
|
|
irel->r_offset + 2, 2))
|
| 1937 |
|
|
goto error_return;
|
| 1938 |
|
|
|
| 1939 |
|
|
/* That will change things, so, we should relax again.
|
| 1940 |
|
|
Note that this is not required, and it may be slow. */
|
| 1941 |
|
|
*again = TRUE;
|
| 1942 |
|
|
}
|
| 1943 |
|
|
}
|
| 1944 |
|
|
|
| 1945 |
|
|
/* Try to turn a 16bit pc-relative branch into an
|
| 1946 |
|
|
8bit pc-relative branch. */
|
| 1947 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_DISP16)
|
| 1948 |
|
|
{
|
| 1949 |
|
|
bfd_vma value = symval;
|
| 1950 |
|
|
|
| 1951 |
|
|
/* Deal with pc-relative gunk. */
|
| 1952 |
|
|
value -= (sec->output_section->vma + sec->output_offset);
|
| 1953 |
|
|
value -= irel->r_offset;
|
| 1954 |
|
|
value += irel->r_addend;
|
| 1955 |
|
|
|
| 1956 |
|
|
/* See if the value will fit in 8 bits, note the high value is
|
| 1957 |
|
|
0xfc + 2 as the target will be two bytes closer if we are
|
| 1958 |
|
|
able to relax. */
|
| 1959 |
|
|
/*if ((long) value < 0x1fa && (long) value > -0x100) REVISIT:range */
|
| 1960 |
|
|
if ((long) value < 0xfa && (long) value > -0x100)
|
| 1961 |
|
|
{
|
| 1962 |
|
|
unsigned short code;
|
| 1963 |
|
|
|
| 1964 |
|
|
/* Get the opcode. */
|
| 1965 |
|
|
code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
|
| 1966 |
|
|
|
| 1967 |
|
|
/* Verify it's a 'bcond' and fix the opcode. */
|
| 1968 |
|
|
if ((code & 0xff0f) == 0x1800)
|
| 1969 |
|
|
bfd_put_16 (abfd, (code & 0xf0f0), contents + irel->r_offset);
|
| 1970 |
|
|
else
|
| 1971 |
|
|
continue;
|
| 1972 |
|
|
|
| 1973 |
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
| 1974 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 1975 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 1976 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 1977 |
|
|
|
| 1978 |
|
|
/* Fix the relocation's type. */
|
| 1979 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 1980 |
|
|
R_CR16_DISP8);
|
| 1981 |
|
|
|
| 1982 |
|
|
/* Delete two bytes of data. */
|
| 1983 |
|
|
if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
|
| 1984 |
|
|
irel->r_offset + 2, 2))
|
| 1985 |
|
|
goto error_return;
|
| 1986 |
|
|
|
| 1987 |
|
|
/* That will change things, so, we should relax again.
|
| 1988 |
|
|
Note that this is not required, and it may be slow. */
|
| 1989 |
|
|
*again = TRUE;
|
| 1990 |
|
|
}
|
| 1991 |
|
|
}
|
| 1992 |
|
|
|
| 1993 |
|
|
/* Try to turn a 32-bit IMM address into a 20/16-bit IMM address */
|
| 1994 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM32)
|
| 1995 |
|
|
{
|
| 1996 |
|
|
bfd_vma value = symval;
|
| 1997 |
|
|
unsigned short is_add_mov = 0;
|
| 1998 |
|
|
bfd_vma value1 = 0;
|
| 1999 |
|
|
|
| 2000 |
|
|
/* Get the existing value from the mcode */
|
| 2001 |
|
|
value1 = ((bfd_get_32 (abfd, contents + irel->r_offset + 2) >> 16)
|
| 2002 |
|
|
|(((bfd_get_32 (abfd, contents + irel->r_offset + 2) & 0xffff) << 16)));
|
| 2003 |
|
|
|
| 2004 |
|
|
/* See if the value will fit in 20 bits. */
|
| 2005 |
|
|
if ((long) (value + value1) < 0xfffff && (long) (value + value1) > 0)
|
| 2006 |
|
|
{
|
| 2007 |
|
|
unsigned short code;
|
| 2008 |
|
|
|
| 2009 |
|
|
/* Get the opcode. */
|
| 2010 |
|
|
code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
|
| 2011 |
|
|
|
| 2012 |
|
|
/* Verify it's a 'arithmetic ADDD or MOVD instruction'.
|
| 2013 |
|
|
For ADDD and MOVD only, convert to IMM32 -> IMM20. */
|
| 2014 |
|
|
|
| 2015 |
|
|
if (((code & 0xfff0) == 0x0070) || ((code & 0xfff0) == 0x0020))
|
| 2016 |
|
|
is_add_mov = 1;
|
| 2017 |
|
|
|
| 2018 |
|
|
if (is_add_mov)
|
| 2019 |
|
|
{
|
| 2020 |
|
|
/* Note that we've changed the relocs, section contents,
|
| 2021 |
|
|
etc. */
|
| 2022 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 2023 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 2024 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 2025 |
|
|
|
| 2026 |
|
|
/* Fix the opcode. */
|
| 2027 |
|
|
if ((code & 0xfff0) == 0x0070) /* For movd. */
|
| 2028 |
|
|
bfd_put_8 (abfd, 0x05, contents + irel->r_offset + 1);
|
| 2029 |
|
|
else /* code == 0x0020 for addd. */
|
| 2030 |
|
|
bfd_put_8 (abfd, 0x04, contents + irel->r_offset + 1);
|
| 2031 |
|
|
|
| 2032 |
|
|
bfd_put_8 (abfd, (code & 0xf) << 4, contents + irel->r_offset);
|
| 2033 |
|
|
|
| 2034 |
|
|
/* If existing value is nagavive adjust approriately
|
| 2035 |
|
|
place the 16-20bits (ie 4 bit) in new opcode,
|
| 2036 |
|
|
as the 0xffffxxxx, the higher 2 byte values removed. */
|
| 2037 |
|
|
if (value1 & 0x80000000)
|
| 2038 |
|
|
bfd_put_8 (abfd, (0x0f | (bfd_get_8(abfd, contents + irel->r_offset))), contents + irel->r_offset);
|
| 2039 |
|
|
else
|
| 2040 |
|
|
bfd_put_8 (abfd, (((value1 >> 16)&0xf) | (bfd_get_8(abfd, contents + irel->r_offset))), contents + irel->r_offset);
|
| 2041 |
|
|
|
| 2042 |
|
|
/* Fix the relocation's type. */
|
| 2043 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 2044 |
|
|
R_CR16_IMM20);
|
| 2045 |
|
|
|
| 2046 |
|
|
/* Delete two bytes of data. */
|
| 2047 |
|
|
if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
|
| 2048 |
|
|
irel->r_offset + 2, 2))
|
| 2049 |
|
|
goto error_return;
|
| 2050 |
|
|
|
| 2051 |
|
|
/* That will change things, so, we should relax again.
|
| 2052 |
|
|
Note that this is not required, and it may be slow. */
|
| 2053 |
|
|
*again = TRUE;
|
| 2054 |
|
|
}
|
| 2055 |
|
|
}
|
| 2056 |
|
|
|
| 2057 |
|
|
/* See if the value will fit in 16 bits. */
|
| 2058 |
|
|
if ((!is_add_mov)
|
| 2059 |
|
|
&& ((long)(value + value1) < 0x7fff && (long)(value + value1) > 0))
|
| 2060 |
|
|
{
|
| 2061 |
|
|
unsigned short code;
|
| 2062 |
|
|
|
| 2063 |
|
|
/* Get the opcode. */
|
| 2064 |
|
|
code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
|
| 2065 |
|
|
|
| 2066 |
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
| 2067 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 2068 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 2069 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 2070 |
|
|
|
| 2071 |
|
|
/* Fix the opcode. */
|
| 2072 |
|
|
if ((code & 0xf0) == 0x70) /* For movd. */
|
| 2073 |
|
|
bfd_put_8 (abfd, 0x54, contents + irel->r_offset + 1);
|
| 2074 |
|
|
else if ((code & 0xf0) == 0x20) /* For addd. */
|
| 2075 |
|
|
bfd_put_8 (abfd, 0x60, contents + irel->r_offset + 1);
|
| 2076 |
|
|
else if ((code & 0xf0) == 0x90) /* For cmpd. */
|
| 2077 |
|
|
bfd_put_8 (abfd, 0x56, contents + irel->r_offset + 1);
|
| 2078 |
|
|
else
|
| 2079 |
|
|
continue;
|
| 2080 |
|
|
|
| 2081 |
|
|
bfd_put_8 (abfd, 0xb0 | (code & 0xf), contents + irel->r_offset);
|
| 2082 |
|
|
|
| 2083 |
|
|
/* If existing value is nagavive adjust approriately
|
| 2084 |
|
|
place the 12-16bits (ie 4 bit) in new opcode,
|
| 2085 |
|
|
as the 0xfffffxxx, the higher 2 byte values removed. */
|
| 2086 |
|
|
if (value1 & 0x80000000)
|
| 2087 |
|
|
bfd_put_8 (abfd, (0x0f | (bfd_get_8(abfd, contents + irel->r_offset))), contents + irel->r_offset);
|
| 2088 |
|
|
else
|
| 2089 |
|
|
bfd_put_16 (abfd, value1, contents + irel->r_offset + 2);
|
| 2090 |
|
|
|
| 2091 |
|
|
|
| 2092 |
|
|
/* Fix the relocation's type. */
|
| 2093 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 2094 |
|
|
R_CR16_IMM16);
|
| 2095 |
|
|
|
| 2096 |
|
|
/* Delete two bytes of data. */
|
| 2097 |
|
|
if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
|
| 2098 |
|
|
irel->r_offset + 2, 2))
|
| 2099 |
|
|
goto error_return;
|
| 2100 |
|
|
|
| 2101 |
|
|
/* That will change things, so, we should relax again.
|
| 2102 |
|
|
Note that this is not required, and it may be slow. */
|
| 2103 |
|
|
*again = TRUE;
|
| 2104 |
|
|
}
|
| 2105 |
|
|
}
|
| 2106 |
|
|
|
| 2107 |
|
|
#if 0
|
| 2108 |
|
|
/* Try to turn a 16bit immediate address into a 4bit
|
| 2109 |
|
|
immediate address. */
|
| 2110 |
|
|
if ((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM20)
|
| 2111 |
|
|
|| (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM16))
|
| 2112 |
|
|
{
|
| 2113 |
|
|
bfd_vma value = symval;
|
| 2114 |
|
|
bfd_vma value1 = 0;
|
| 2115 |
|
|
|
| 2116 |
|
|
/* Get the existing value from the mcode */
|
| 2117 |
|
|
value1 = ((bfd_get_16 (abfd, contents + irel->r_offset + 2) & 0xffff));
|
| 2118 |
|
|
|
| 2119 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM20)
|
| 2120 |
|
|
{
|
| 2121 |
|
|
value1 |= ((bfd_get_16 (abfd, contents + irel->r_offset + 1) & 0xf000) << 0x4);
|
| 2122 |
|
|
}
|
| 2123 |
|
|
|
| 2124 |
|
|
/* See if the value will fit in 4 bits. */
|
| 2125 |
|
|
if ((((long) (value + value1)) < 0xf)
|
| 2126 |
|
|
&& (((long) (value + value1)) > 0))
|
| 2127 |
|
|
{
|
| 2128 |
|
|
unsigned short code;
|
| 2129 |
|
|
|
| 2130 |
|
|
/* Get the opcode. */
|
| 2131 |
|
|
code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
|
| 2132 |
|
|
|
| 2133 |
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
| 2134 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
| 2135 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 2136 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 2137 |
|
|
|
| 2138 |
|
|
/* Fix the opcode. */
|
| 2139 |
|
|
if (((code & 0x0f00) == 0x0400) || ((code & 0x0f00) == 0x0500))
|
| 2140 |
|
|
{
|
| 2141 |
|
|
if ((code & 0x0f00) == 0x0400) /* For movd imm20. */
|
| 2142 |
|
|
bfd_put_8 (abfd, 0x60, contents + irel->r_offset);
|
| 2143 |
|
|
else /* For addd imm20. */
|
| 2144 |
|
|
bfd_put_8 (abfd, 0x54, contents + irel->r_offset);
|
| 2145 |
|
|
bfd_put_8 (abfd, (code & 0xf0) >> 4, contents + irel->r_offset + 1);
|
| 2146 |
|
|
}
|
| 2147 |
|
|
else
|
| 2148 |
|
|
{
|
| 2149 |
|
|
if ((code & 0xfff0) == 0x56b0) /* For cmpd imm16. */
|
| 2150 |
|
|
bfd_put_8 (abfd, 0x56, contents + irel->r_offset);
|
| 2151 |
|
|
else if ((code & 0xfff0) == 0x54b0) /* For movd imm16. */
|
| 2152 |
|
|
bfd_put_8 (abfd, 0x54, contents + irel->r_offset);
|
| 2153 |
|
|
else if ((code & 0xfff0) == 0x58b0) /* For movb imm16. */
|
| 2154 |
|
|
bfd_put_8 (abfd, 0x58, contents + irel->r_offset);
|
| 2155 |
|
|
else if ((code & 0xfff0) == 0x5Ab0) /* For movw imm16. */
|
| 2156 |
|
|
bfd_put_8 (abfd, 0x5A, contents + irel->r_offset);
|
| 2157 |
|
|
else if ((code & 0xfff0) == 0x60b0) /* For addd imm16. */
|
| 2158 |
|
|
bfd_put_8 (abfd, 0x60, contents + irel->r_offset);
|
| 2159 |
|
|
else if ((code & 0xfff0) == 0x30b0) /* For addb imm16. */
|
| 2160 |
|
|
bfd_put_8 (abfd, 0x30, contents + irel->r_offset);
|
| 2161 |
|
|
else if ((code & 0xfff0) == 0x2Cb0) /* For addub imm16. */
|
| 2162 |
|
|
bfd_put_8 (abfd, 0x2C, contents + irel->r_offset);
|
| 2163 |
|
|
else if ((code & 0xfff0) == 0x32b0) /* For adduw imm16. */
|
| 2164 |
|
|
bfd_put_8 (abfd, 0x32, contents + irel->r_offset);
|
| 2165 |
|
|
else if ((code & 0xfff0) == 0x38b0) /* For subb imm16. */
|
| 2166 |
|
|
bfd_put_8 (abfd, 0x38, contents + irel->r_offset);
|
| 2167 |
|
|
else if ((code & 0xfff0) == 0x3Cb0) /* For subcb imm16. */
|
| 2168 |
|
|
bfd_put_8 (abfd, 0x3C, contents + irel->r_offset);
|
| 2169 |
|
|
else if ((code & 0xfff0) == 0x3Fb0) /* For subcw imm16. */
|
| 2170 |
|
|
bfd_put_8 (abfd, 0x3F, contents + irel->r_offset);
|
| 2171 |
|
|
else if ((code & 0xfff0) == 0x3Ab0) /* For subw imm16. */
|
| 2172 |
|
|
bfd_put_8 (abfd, 0x3A, contents + irel->r_offset);
|
| 2173 |
|
|
else if ((code & 0xfff0) == 0x50b0) /* For cmpb imm16. */
|
| 2174 |
|
|
bfd_put_8 (abfd, 0x50, contents + irel->r_offset);
|
| 2175 |
|
|
else if ((code & 0xfff0) == 0x52b0) /* For cmpw imm16. */
|
| 2176 |
|
|
bfd_put_8 (abfd, 0x52, contents + irel->r_offset);
|
| 2177 |
|
|
else
|
| 2178 |
|
|
continue;
|
| 2179 |
|
|
|
| 2180 |
|
|
bfd_put_8 (abfd, (code & 0xf), contents + irel->r_offset + 1);
|
| 2181 |
|
|
}
|
| 2182 |
|
|
|
| 2183 |
|
|
/* Fix the relocation's type. */
|
| 2184 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
| 2185 |
|
|
R_CR16_IMM4);
|
| 2186 |
|
|
|
| 2187 |
|
|
/* Delete two bytes of data. */
|
| 2188 |
|
|
if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
|
| 2189 |
|
|
irel->r_offset + 2, 2))
|
| 2190 |
|
|
goto error_return;
|
| 2191 |
|
|
|
| 2192 |
|
|
/* That will change things, so, we should relax again.
|
| 2193 |
|
|
Note that this is not required, and it may be slow. */
|
| 2194 |
|
|
*again = TRUE;
|
| 2195 |
|
|
}
|
| 2196 |
|
|
}
|
| 2197 |
|
|
#endif
|
| 2198 |
|
|
}
|
| 2199 |
|
|
|
| 2200 |
|
|
if (isymbuf != NULL
|
| 2201 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
| 2202 |
|
|
{
|
| 2203 |
|
|
if (! link_info->keep_memory)
|
| 2204 |
|
|
free (isymbuf);
|
| 2205 |
|
|
else
|
| 2206 |
|
|
/* Cache the symbols for elf_link_input_bfd. */
|
| 2207 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
| 2208 |
|
|
}
|
| 2209 |
|
|
|
| 2210 |
|
|
if (contents != NULL
|
| 2211 |
|
|
&& elf_section_data (sec)->this_hdr.contents != contents)
|
| 2212 |
|
|
{
|
| 2213 |
|
|
if (! link_info->keep_memory)
|
| 2214 |
|
|
free (contents);
|
| 2215 |
|
|
else
|
| 2216 |
|
|
/* Cache the section contents for elf_link_input_bfd. */
|
| 2217 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
| 2218 |
|
|
|
| 2219 |
|
|
}
|
| 2220 |
|
|
|
| 2221 |
|
|
if (internal_relocs != NULL
|
| 2222 |
|
|
&& elf_section_data (sec)->relocs != internal_relocs)
|
| 2223 |
|
|
free (internal_relocs);
|
| 2224 |
|
|
|
| 2225 |
|
|
return TRUE;
|
| 2226 |
|
|
|
| 2227 |
|
|
error_return:
|
| 2228 |
|
|
if (isymbuf != NULL
|
| 2229 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
| 2230 |
|
|
free (isymbuf);
|
| 2231 |
|
|
if (contents != NULL
|
| 2232 |
|
|
&& elf_section_data (sec)->this_hdr.contents != contents)
|
| 2233 |
|
|
free (contents);
|
| 2234 |
|
|
if (internal_relocs != NULL
|
| 2235 |
|
|
&& elf_section_data (sec)->relocs != internal_relocs)
|
| 2236 |
|
|
free (internal_relocs);
|
| 2237 |
|
|
|
| 2238 |
|
|
return FALSE;
|
| 2239 |
|
|
}
|
| 2240 |
|
|
|
| 2241 |
|
|
static asection *
|
| 2242 |
|
|
elf32_cr16_gc_mark_hook (asection *sec,
|
| 2243 |
|
|
struct bfd_link_info *info,
|
| 2244 |
|
|
Elf_Internal_Rela *rel,
|
| 2245 |
|
|
struct elf_link_hash_entry *h,
|
| 2246 |
|
|
Elf_Internal_Sym *sym)
|
| 2247 |
|
|
{
|
| 2248 |
|
|
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
| 2249 |
|
|
}
|
| 2250 |
|
|
|
| 2251 |
|
|
/* Update the got entry reference counts for the section being removed. */
|
| 2252 |
|
|
|
| 2253 |
|
|
static bfd_boolean
|
| 2254 |
|
|
elf32_cr16_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
|
| 2255 |
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
| 2256 |
|
|
asection *sec ATTRIBUTE_UNUSED,
|
| 2257 |
|
|
const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
|
| 2258 |
|
|
{
|
| 2259 |
|
|
/* We don't support garbage collection of GOT and PLT relocs yet. */
|
| 2260 |
|
|
return TRUE;
|
| 2261 |
|
|
}
|
| 2262 |
|
|
|
| 2263 |
|
|
/* Create dynamic sections when linking against a dynamic object. */
|
| 2264 |
|
|
|
| 2265 |
|
|
static bfd_boolean
|
| 2266 |
|
|
_bfd_cr16_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
|
| 2267 |
|
|
{
|
| 2268 |
|
|
flagword flags;
|
| 2269 |
|
|
asection * s;
|
| 2270 |
|
|
const struct elf_backend_data * bed = get_elf_backend_data (abfd);
|
| 2271 |
|
|
int ptralign = 0;
|
| 2272 |
|
|
|
| 2273 |
|
|
switch (bed->s->arch_size)
|
| 2274 |
|
|
{
|
| 2275 |
|
|
case 16:
|
| 2276 |
|
|
ptralign = 1;
|
| 2277 |
|
|
break;
|
| 2278 |
|
|
|
| 2279 |
|
|
case 32:
|
| 2280 |
|
|
ptralign = 2;
|
| 2281 |
|
|
break;
|
| 2282 |
|
|
|
| 2283 |
|
|
default:
|
| 2284 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 2285 |
|
|
return FALSE;
|
| 2286 |
|
|
}
|
| 2287 |
|
|
|
| 2288 |
|
|
/* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
|
| 2289 |
|
|
.rel[a].bss sections. */
|
| 2290 |
|
|
|
| 2291 |
|
|
flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
|
| 2292 |
|
|
| SEC_LINKER_CREATED);
|
| 2293 |
|
|
|
| 2294 |
|
|
s = bfd_make_section_with_flags (abfd,
|
| 2295 |
|
|
(bed->default_use_rela_p
|
| 2296 |
|
|
? ".rela.plt" : ".rel.plt"),
|
| 2297 |
|
|
flags | SEC_READONLY);
|
| 2298 |
|
|
if (s == NULL
|
| 2299 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
| 2300 |
|
|
return FALSE;
|
| 2301 |
|
|
|
| 2302 |
|
|
if (! _bfd_cr16_elf_create_got_section (abfd, info))
|
| 2303 |
|
|
return FALSE;
|
| 2304 |
|
|
|
| 2305 |
|
|
{
|
| 2306 |
|
|
const char * secname;
|
| 2307 |
|
|
char * relname;
|
| 2308 |
|
|
flagword secflags;
|
| 2309 |
|
|
asection * sec;
|
| 2310 |
|
|
|
| 2311 |
|
|
for (sec = abfd->sections; sec; sec = sec->next)
|
| 2312 |
|
|
{
|
| 2313 |
|
|
secflags = bfd_get_section_flags (abfd, sec);
|
| 2314 |
|
|
if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
|
| 2315 |
|
|
|| ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
|
| 2316 |
|
|
continue;
|
| 2317 |
|
|
|
| 2318 |
|
|
secname = bfd_get_section_name (abfd, sec);
|
| 2319 |
|
|
relname = (char *) bfd_malloc (strlen (secname) + 6);
|
| 2320 |
|
|
strcpy (relname, ".rela");
|
| 2321 |
|
|
strcat (relname, secname);
|
| 2322 |
|
|
|
| 2323 |
|
|
s = bfd_make_section_with_flags (abfd, relname,
|
| 2324 |
|
|
flags | SEC_READONLY);
|
| 2325 |
|
|
if (s == NULL
|
| 2326 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
| 2327 |
|
|
return FALSE;
|
| 2328 |
|
|
}
|
| 2329 |
|
|
}
|
| 2330 |
|
|
|
| 2331 |
|
|
if (bed->want_dynbss)
|
| 2332 |
|
|
{
|
| 2333 |
|
|
/* The .dynbss section is a place to put symbols which are defined
|
| 2334 |
|
|
by dynamic objects, are referenced by regular objects, and are
|
| 2335 |
|
|
not functions. We must allocate space for them in the process
|
| 2336 |
|
|
image and use a R_*_COPY reloc to tell the dynamic linker to
|
| 2337 |
|
|
initialize them at run time. The linker script puts the .dynbss
|
| 2338 |
|
|
section into the .bss section of the final image. */
|
| 2339 |
|
|
s = bfd_make_section_with_flags (abfd, ".dynbss",
|
| 2340 |
|
|
SEC_ALLOC | SEC_LINKER_CREATED);
|
| 2341 |
|
|
if (s == NULL)
|
| 2342 |
|
|
return FALSE;
|
| 2343 |
|
|
|
| 2344 |
|
|
/* The .rel[a].bss section holds copy relocs. This section is not
|
| 2345 |
|
|
normally needed. We need to create it here, though, so that the
|
| 2346 |
|
|
linker will map it to an output section. We can't just create it
|
| 2347 |
|
|
only if we need it, because we will not know whether we need it
|
| 2348 |
|
|
until we have seen all the input files, and the first time the
|
| 2349 |
|
|
main linker code calls BFD after examining all the input files
|
| 2350 |
|
|
(size_dynamic_sections) the input sections have already been
|
| 2351 |
|
|
mapped to the output sections. If the section turns out not to
|
| 2352 |
|
|
be needed, we can discard it later. We will never need this
|
| 2353 |
|
|
section when generating a shared object, since they do not use
|
| 2354 |
|
|
copy relocs. */
|
| 2355 |
|
|
if (! info->executable)
|
| 2356 |
|
|
{
|
| 2357 |
|
|
s = bfd_make_section_with_flags (abfd,
|
| 2358 |
|
|
(bed->default_use_rela_p
|
| 2359 |
|
|
? ".rela.bss" : ".rel.bss"),
|
| 2360 |
|
|
flags | SEC_READONLY);
|
| 2361 |
|
|
if (s == NULL
|
| 2362 |
|
|
|| ! bfd_set_section_alignment (abfd, s, ptralign))
|
| 2363 |
|
|
return FALSE;
|
| 2364 |
|
|
}
|
| 2365 |
|
|
}
|
| 2366 |
|
|
|
| 2367 |
|
|
return TRUE;
|
| 2368 |
|
|
}
|
| 2369 |
|
|
|
| 2370 |
|
|
/* Adjust a symbol defined by a dynamic object and referenced by a
|
| 2371 |
|
|
regular object. The current definition is in some section of the
|
| 2372 |
|
|
dynamic object, but we're not including those sections. We have to
|
| 2373 |
|
|
change the definition to something the rest of the link can
|
| 2374 |
|
|
understand. */
|
| 2375 |
|
|
|
| 2376 |
|
|
static bfd_boolean
|
| 2377 |
|
|
_bfd_cr16_elf_adjust_dynamic_symbol (struct bfd_link_info * info,
|
| 2378 |
|
|
struct elf_link_hash_entry * h)
|
| 2379 |
|
|
{
|
| 2380 |
|
|
bfd * dynobj;
|
| 2381 |
|
|
asection * s;
|
| 2382 |
|
|
|
| 2383 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 2384 |
|
|
|
| 2385 |
|
|
/* Make sure we know what is going on here. */
|
| 2386 |
|
|
BFD_ASSERT (dynobj != NULL
|
| 2387 |
|
|
&& (h->needs_plt
|
| 2388 |
|
|
|| h->u.weakdef != NULL
|
| 2389 |
|
|
|| (h->def_dynamic
|
| 2390 |
|
|
&& h->ref_regular
|
| 2391 |
|
|
&& !h->def_regular)));
|
| 2392 |
|
|
|
| 2393 |
|
|
/* If this is a function, put it in the procedure linkage table. We
|
| 2394 |
|
|
will fill in the contents of the procedure linkage table later,
|
| 2395 |
|
|
when we know the address of the .got section. */
|
| 2396 |
|
|
if (h->type == STT_FUNC
|
| 2397 |
|
|
|| h->needs_plt)
|
| 2398 |
|
|
{
|
| 2399 |
|
|
if (! info->executable
|
| 2400 |
|
|
&& !h->def_dynamic
|
| 2401 |
|
|
&& !h->ref_dynamic)
|
| 2402 |
|
|
{
|
| 2403 |
|
|
/* This case can occur if we saw a PLT reloc in an input
|
| 2404 |
|
|
file, but the symbol was never referred to by a dynamic
|
| 2405 |
|
|
object. In such a case, we don't actually need to build
|
| 2406 |
|
|
a procedure linkage table, and we can just do a REL32
|
| 2407 |
|
|
reloc instead. */
|
| 2408 |
|
|
BFD_ASSERT (h->needs_plt);
|
| 2409 |
|
|
return TRUE;
|
| 2410 |
|
|
}
|
| 2411 |
|
|
|
| 2412 |
|
|
/* Make sure this symbol is output as a dynamic symbol. */
|
| 2413 |
|
|
if (h->dynindx == -1)
|
| 2414 |
|
|
{
|
| 2415 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 2416 |
|
|
return FALSE;
|
| 2417 |
|
|
}
|
| 2418 |
|
|
|
| 2419 |
|
|
/* We also need to make an entry in the .got.plt section, which
|
| 2420 |
|
|
will be placed in the .got section by the linker script. */
|
| 2421 |
|
|
|
| 2422 |
|
|
s = bfd_get_section_by_name (dynobj, ".got.plt");
|
| 2423 |
|
|
BFD_ASSERT (s != NULL);
|
| 2424 |
|
|
s->size += 4;
|
| 2425 |
|
|
|
| 2426 |
|
|
/* We also need to make an entry in the .rela.plt section. */
|
| 2427 |
|
|
|
| 2428 |
|
|
s = bfd_get_section_by_name (dynobj, ".rela.plt");
|
| 2429 |
|
|
BFD_ASSERT (s != NULL);
|
| 2430 |
|
|
s->size += sizeof (Elf32_External_Rela);
|
| 2431 |
|
|
|
| 2432 |
|
|
return TRUE;
|
| 2433 |
|
|
}
|
| 2434 |
|
|
|
| 2435 |
|
|
/* If this is a weak symbol, and there is a real definition, the
|
| 2436 |
|
|
processor independent code will have arranged for us to see the
|
| 2437 |
|
|
real definition first, and we can just use the same value. */
|
| 2438 |
|
|
if (h->u.weakdef != NULL)
|
| 2439 |
|
|
{
|
| 2440 |
|
|
BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
|
| 2441 |
|
|
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
|
| 2442 |
|
|
h->root.u.def.section = h->u.weakdef->root.u.def.section;
|
| 2443 |
|
|
h->root.u.def.value = h->u.weakdef->root.u.def.value;
|
| 2444 |
|
|
return TRUE;
|
| 2445 |
|
|
}
|
| 2446 |
|
|
|
| 2447 |
|
|
/* This is a reference to a symbol defined by a dynamic object which
|
| 2448 |
|
|
is not a function. */
|
| 2449 |
|
|
|
| 2450 |
|
|
/* If we are creating a shared library, we must presume that the
|
| 2451 |
|
|
only references to the symbol are via the global offset table.
|
| 2452 |
|
|
For such cases we need not do anything here; the relocations will
|
| 2453 |
|
|
be handled correctly by relocate_section. */
|
| 2454 |
|
|
if (info->executable)
|
| 2455 |
|
|
return TRUE;
|
| 2456 |
|
|
|
| 2457 |
|
|
/* If there are no references to this symbol that do not use the
|
| 2458 |
|
|
GOT, we don't need to generate a copy reloc. */
|
| 2459 |
|
|
if (!h->non_got_ref)
|
| 2460 |
|
|
return TRUE;
|
| 2461 |
|
|
|
| 2462 |
|
|
if (h->size == 0)
|
| 2463 |
|
|
{
|
| 2464 |
|
|
(*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
|
| 2465 |
|
|
h->root.root.string);
|
| 2466 |
|
|
return TRUE;
|
| 2467 |
|
|
}
|
| 2468 |
|
|
|
| 2469 |
|
|
/* We must allocate the symbol in our .dynbss section, which will
|
| 2470 |
|
|
become part of the .bss section of the executable. There will be
|
| 2471 |
|
|
an entry for this symbol in the .dynsym section. The dynamic
|
| 2472 |
|
|
object will contain position independent code, so all references
|
| 2473 |
|
|
from the dynamic object to this symbol will go through the global
|
| 2474 |
|
|
offset table. The dynamic linker will use the .dynsym entry to
|
| 2475 |
|
|
determine the address it must put in the global offset table, so
|
| 2476 |
|
|
both the dynamic object and the regular object will refer to the
|
| 2477 |
|
|
same memory location for the variable. */
|
| 2478 |
|
|
|
| 2479 |
|
|
s = bfd_get_section_by_name (dynobj, ".dynbss");
|
| 2480 |
|
|
BFD_ASSERT (s != NULL);
|
| 2481 |
|
|
|
| 2482 |
|
|
/* We must generate a R_CR16_COPY reloc to tell the dynamic linker to
|
| 2483 |
|
|
copy the initial value out of the dynamic object and into the
|
| 2484 |
|
|
runtime process image. We need to remember the offset into the
|
| 2485 |
|
|
.rela.bss section we are going to use. */
|
| 2486 |
|
|
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
| 2487 |
|
|
{
|
| 2488 |
|
|
asection * srel;
|
| 2489 |
|
|
|
| 2490 |
|
|
srel = bfd_get_section_by_name (dynobj, ".rela.bss");
|
| 2491 |
|
|
BFD_ASSERT (srel != NULL);
|
| 2492 |
|
|
srel->size += sizeof (Elf32_External_Rela);
|
| 2493 |
|
|
h->needs_copy = 1;
|
| 2494 |
|
|
}
|
| 2495 |
|
|
|
| 2496 |
|
|
return _bfd_elf_adjust_dynamic_copy (h, s);
|
| 2497 |
|
|
}
|
| 2498 |
|
|
|
| 2499 |
|
|
/* Set the sizes of the dynamic sections. */
|
| 2500 |
|
|
|
| 2501 |
|
|
static bfd_boolean
|
| 2502 |
|
|
_bfd_cr16_elf_size_dynamic_sections (bfd * output_bfd,
|
| 2503 |
|
|
struct bfd_link_info * info)
|
| 2504 |
|
|
{
|
| 2505 |
|
|
bfd * dynobj;
|
| 2506 |
|
|
asection * s;
|
| 2507 |
|
|
bfd_boolean plt;
|
| 2508 |
|
|
bfd_boolean relocs;
|
| 2509 |
|
|
bfd_boolean reltext;
|
| 2510 |
|
|
|
| 2511 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 2512 |
|
|
BFD_ASSERT (dynobj != NULL);
|
| 2513 |
|
|
|
| 2514 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
| 2515 |
|
|
{
|
| 2516 |
|
|
/* Set the contents of the .interp section to the interpreter. */
|
| 2517 |
|
|
if (info->executable)
|
| 2518 |
|
|
{
|
| 2519 |
|
|
#if 0
|
| 2520 |
|
|
s = bfd_get_section_by_name (dynobj, ".interp");
|
| 2521 |
|
|
BFD_ASSERT (s != NULL);
|
| 2522 |
|
|
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
|
| 2523 |
|
|
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
|
| 2524 |
|
|
#endif
|
| 2525 |
|
|
}
|
| 2526 |
|
|
}
|
| 2527 |
|
|
else
|
| 2528 |
|
|
{
|
| 2529 |
|
|
/* We may have created entries in the .rela.got section.
|
| 2530 |
|
|
However, if we are not creating the dynamic sections, we will
|
| 2531 |
|
|
not actually use these entries. Reset the size of .rela.got,
|
| 2532 |
|
|
which will cause it to get stripped from the output file
|
| 2533 |
|
|
below. */
|
| 2534 |
|
|
s = bfd_get_section_by_name (dynobj, ".rela.got");
|
| 2535 |
|
|
if (s != NULL)
|
| 2536 |
|
|
s->size = 0;
|
| 2537 |
|
|
}
|
| 2538 |
|
|
|
| 2539 |
|
|
/* The check_relocs and adjust_dynamic_symbol entry points have
|
| 2540 |
|
|
determined the sizes of the various dynamic sections. Allocate
|
| 2541 |
|
|
memory for them. */
|
| 2542 |
|
|
plt = FALSE;
|
| 2543 |
|
|
relocs = FALSE;
|
| 2544 |
|
|
reltext = FALSE;
|
| 2545 |
|
|
for (s = dynobj->sections; s != NULL; s = s->next)
|
| 2546 |
|
|
{
|
| 2547 |
|
|
const char * name;
|
| 2548 |
|
|
|
| 2549 |
|
|
if ((s->flags & SEC_LINKER_CREATED) == 0)
|
| 2550 |
|
|
continue;
|
| 2551 |
|
|
|
| 2552 |
|
|
/* It's OK to base decisions on the section name, because none
|
| 2553 |
|
|
of the dynobj section names depend upon the input files. */
|
| 2554 |
|
|
name = bfd_get_section_name (dynobj, s);
|
| 2555 |
|
|
|
| 2556 |
|
|
if (strcmp (name, ".plt") == 0)
|
| 2557 |
|
|
{
|
| 2558 |
|
|
/* Remember whether there is a PLT. */
|
| 2559 |
|
|
plt = s->size != 0;
|
| 2560 |
|
|
}
|
| 2561 |
|
|
else if (CONST_STRNEQ (name, ".rela"))
|
| 2562 |
|
|
{
|
| 2563 |
|
|
if (s->size != 0)
|
| 2564 |
|
|
{
|
| 2565 |
|
|
asection * target;
|
| 2566 |
|
|
|
| 2567 |
|
|
/* Remember whether there are any reloc sections other
|
| 2568 |
|
|
than .rela.plt. */
|
| 2569 |
|
|
if (strcmp (name, ".rela.plt") != 0)
|
| 2570 |
|
|
{
|
| 2571 |
|
|
const char * outname;
|
| 2572 |
|
|
|
| 2573 |
|
|
relocs = TRUE;
|
| 2574 |
|
|
|
| 2575 |
|
|
/* If this relocation section applies to a read only
|
| 2576 |
|
|
section, then we probably need a DT_TEXTREL
|
| 2577 |
|
|
entry. The entries in the .rela.plt section
|
| 2578 |
|
|
really apply to the .got section, which we
|
| 2579 |
|
|
created ourselves and so know is not readonly. */
|
| 2580 |
|
|
outname = bfd_get_section_name (output_bfd,
|
| 2581 |
|
|
s->output_section);
|
| 2582 |
|
|
target = bfd_get_section_by_name (output_bfd, outname + 5);
|
| 2583 |
|
|
if (target != NULL
|
| 2584 |
|
|
&& (target->flags & SEC_READONLY) != 0
|
| 2585 |
|
|
&& (target->flags & SEC_ALLOC) != 0)
|
| 2586 |
|
|
reltext = TRUE;
|
| 2587 |
|
|
}
|
| 2588 |
|
|
|
| 2589 |
|
|
/* We use the reloc_count field as a counter if we need
|
| 2590 |
|
|
to copy relocs into the output file. */
|
| 2591 |
|
|
s->reloc_count = 0;
|
| 2592 |
|
|
}
|
| 2593 |
|
|
}
|
| 2594 |
|
|
else if (! CONST_STRNEQ (name, ".got")
|
| 2595 |
|
|
&& strcmp (name, ".dynbss") != 0)
|
| 2596 |
|
|
/* It's not one of our sections, so don't allocate space. */
|
| 2597 |
|
|
continue;
|
| 2598 |
|
|
|
| 2599 |
|
|
if (s->size == 0)
|
| 2600 |
|
|
{
|
| 2601 |
|
|
/* If we don't need this section, strip it from the
|
| 2602 |
|
|
output file. This is mostly to handle .rela.bss and
|
| 2603 |
|
|
.rela.plt. We must create both sections in
|
| 2604 |
|
|
create_dynamic_sections, because they must be created
|
| 2605 |
|
|
before the linker maps input sections to output
|
| 2606 |
|
|
sections. The linker does that before
|
| 2607 |
|
|
adjust_dynamic_symbol is called, and it is that
|
| 2608 |
|
|
function which decides whether anything needs to go
|
| 2609 |
|
|
into these sections. */
|
| 2610 |
|
|
s->flags |= SEC_EXCLUDE;
|
| 2611 |
|
|
continue;
|
| 2612 |
|
|
}
|
| 2613 |
|
|
|
| 2614 |
|
|
if ((s->flags & SEC_HAS_CONTENTS) == 0)
|
| 2615 |
|
|
continue;
|
| 2616 |
|
|
|
| 2617 |
|
|
/* Allocate memory for the section contents. We use bfd_zalloc
|
| 2618 |
|
|
here in case unused entries are not reclaimed before the
|
| 2619 |
|
|
section's contents are written out. This should not happen,
|
| 2620 |
|
|
but this way if it does, we get a R_CR16_NONE reloc
|
| 2621 |
|
|
instead of garbage. */
|
| 2622 |
|
|
s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
|
| 2623 |
|
|
if (s->contents == NULL)
|
| 2624 |
|
|
return FALSE;
|
| 2625 |
|
|
}
|
| 2626 |
|
|
|
| 2627 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
| 2628 |
|
|
{
|
| 2629 |
|
|
/* Add some entries to the .dynamic section. We fill in the
|
| 2630 |
|
|
values later, in _bfd_cr16_elf_finish_dynamic_sections,
|
| 2631 |
|
|
but we must add the entries now so that we get the correct
|
| 2632 |
|
|
size for the .dynamic section. The DT_DEBUG entry is filled
|
| 2633 |
|
|
in by the dynamic linker and used by the debugger. */
|
| 2634 |
|
|
if (! info->executable)
|
| 2635 |
|
|
{
|
| 2636 |
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0))
|
| 2637 |
|
|
return FALSE;
|
| 2638 |
|
|
}
|
| 2639 |
|
|
|
| 2640 |
|
|
if (plt)
|
| 2641 |
|
|
{
|
| 2642 |
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
|
| 2643 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
|
| 2644 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
|
| 2645 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
|
| 2646 |
|
|
return FALSE;
|
| 2647 |
|
|
}
|
| 2648 |
|
|
|
| 2649 |
|
|
if (relocs)
|
| 2650 |
|
|
{
|
| 2651 |
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
|
| 2652 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
|
| 2653 |
|
|
|| !_bfd_elf_add_dynamic_entry (info, DT_RELAENT,
|
| 2654 |
|
|
sizeof (Elf32_External_Rela)))
|
| 2655 |
|
|
return FALSE;
|
| 2656 |
|
|
}
|
| 2657 |
|
|
|
| 2658 |
|
|
if (reltext)
|
| 2659 |
|
|
{
|
| 2660 |
|
|
if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
|
| 2661 |
|
|
return FALSE;
|
| 2662 |
|
|
}
|
| 2663 |
|
|
}
|
| 2664 |
|
|
|
| 2665 |
|
|
return TRUE;
|
| 2666 |
|
|
}
|
| 2667 |
|
|
|
| 2668 |
|
|
/* Finish up dynamic symbol handling. We set the contents of various
|
| 2669 |
|
|
dynamic sections here. */
|
| 2670 |
|
|
|
| 2671 |
|
|
static bfd_boolean
|
| 2672 |
|
|
_bfd_cr16_elf_finish_dynamic_symbol (bfd * output_bfd,
|
| 2673 |
|
|
struct bfd_link_info * info,
|
| 2674 |
|
|
struct elf_link_hash_entry * h,
|
| 2675 |
|
|
Elf_Internal_Sym * sym)
|
| 2676 |
|
|
{
|
| 2677 |
|
|
bfd * dynobj;
|
| 2678 |
|
|
|
| 2679 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 2680 |
|
|
|
| 2681 |
|
|
if (h->got.offset != (bfd_vma) -1)
|
| 2682 |
|
|
{
|
| 2683 |
|
|
asection * sgot;
|
| 2684 |
|
|
asection * srel;
|
| 2685 |
|
|
Elf_Internal_Rela rel;
|
| 2686 |
|
|
|
| 2687 |
|
|
/* This symbol has an entry in the global offset table. Set it up. */
|
| 2688 |
|
|
|
| 2689 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got");
|
| 2690 |
|
|
srel = bfd_get_section_by_name (dynobj, ".rela.got");
|
| 2691 |
|
|
BFD_ASSERT (sgot != NULL && srel != NULL);
|
| 2692 |
|
|
|
| 2693 |
|
|
rel.r_offset = (sgot->output_section->vma
|
| 2694 |
|
|
+ sgot->output_offset
|
| 2695 |
|
|
+ (h->got.offset & ~1));
|
| 2696 |
|
|
|
| 2697 |
|
|
/* If this is a -Bsymbolic link, and the symbol is defined
|
| 2698 |
|
|
locally, we just want to emit a RELATIVE reloc. Likewise if
|
| 2699 |
|
|
the symbol was forced to be local because of a version file.
|
| 2700 |
|
|
The entry in the global offset table will already have been
|
| 2701 |
|
|
initialized in the relocate_section function. */
|
| 2702 |
|
|
if (info->executable
|
| 2703 |
|
|
&& (info->symbolic || h->dynindx == -1)
|
| 2704 |
|
|
&& h->def_regular)
|
| 2705 |
|
|
{
|
| 2706 |
|
|
rel.r_info = ELF32_R_INFO (0, R_CR16_GOT_REGREL20);
|
| 2707 |
|
|
rel.r_addend = (h->root.u.def.value
|
| 2708 |
|
|
+ h->root.u.def.section->output_section->vma
|
| 2709 |
|
|
+ h->root.u.def.section->output_offset);
|
| 2710 |
|
|
}
|
| 2711 |
|
|
else
|
| 2712 |
|
|
{
|
| 2713 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
|
| 2714 |
|
|
rel.r_info = ELF32_R_INFO (h->dynindx, R_CR16_GOT_REGREL20);
|
| 2715 |
|
|
rel.r_addend = 0;
|
| 2716 |
|
|
}
|
| 2717 |
|
|
|
| 2718 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rel,
|
| 2719 |
|
|
(bfd_byte *) ((Elf32_External_Rela *) srel->contents
|
| 2720 |
|
|
+ srel->reloc_count));
|
| 2721 |
|
|
++ srel->reloc_count;
|
| 2722 |
|
|
}
|
| 2723 |
|
|
|
| 2724 |
|
|
if (h->needs_copy)
|
| 2725 |
|
|
{
|
| 2726 |
|
|
asection * s;
|
| 2727 |
|
|
Elf_Internal_Rela rel;
|
| 2728 |
|
|
|
| 2729 |
|
|
/* This symbol needs a copy reloc. Set it up. */
|
| 2730 |
|
|
BFD_ASSERT (h->dynindx != -1
|
| 2731 |
|
|
&& (h->root.type == bfd_link_hash_defined
|
| 2732 |
|
|
|| h->root.type == bfd_link_hash_defweak));
|
| 2733 |
|
|
|
| 2734 |
|
|
s = bfd_get_section_by_name (h->root.u.def.section->owner,
|
| 2735 |
|
|
".rela.bss");
|
| 2736 |
|
|
BFD_ASSERT (s != NULL);
|
| 2737 |
|
|
|
| 2738 |
|
|
rel.r_offset = (h->root.u.def.value
|
| 2739 |
|
|
+ h->root.u.def.section->output_section->vma
|
| 2740 |
|
|
+ h->root.u.def.section->output_offset);
|
| 2741 |
|
|
rel.r_info = ELF32_R_INFO (h->dynindx, R_CR16_GOT_REGREL20);
|
| 2742 |
|
|
rel.r_addend = 0;
|
| 2743 |
|
|
bfd_elf32_swap_reloca_out (output_bfd, &rel,
|
| 2744 |
|
|
(bfd_byte *) ((Elf32_External_Rela *) s->contents
|
| 2745 |
|
|
+ s->reloc_count));
|
| 2746 |
|
|
++ s->reloc_count;
|
| 2747 |
|
|
}
|
| 2748 |
|
|
|
| 2749 |
|
|
/* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
|
| 2750 |
|
|
if (strcmp (h->root.root.string, "_DYNAMIC") == 0
|
| 2751 |
|
|
|| h == elf_hash_table (info)->hgot)
|
| 2752 |
|
|
sym->st_shndx = SHN_ABS;
|
| 2753 |
|
|
|
| 2754 |
|
|
return TRUE;
|
| 2755 |
|
|
}
|
| 2756 |
|
|
|
| 2757 |
|
|
/* Finish up the dynamic sections. */
|
| 2758 |
|
|
|
| 2759 |
|
|
static bfd_boolean
|
| 2760 |
|
|
_bfd_cr16_elf_finish_dynamic_sections (bfd * output_bfd,
|
| 2761 |
|
|
struct bfd_link_info * info)
|
| 2762 |
|
|
{
|
| 2763 |
|
|
bfd * dynobj;
|
| 2764 |
|
|
asection * sgot;
|
| 2765 |
|
|
asection * sdyn;
|
| 2766 |
|
|
|
| 2767 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 2768 |
|
|
|
| 2769 |
|
|
sgot = bfd_get_section_by_name (dynobj, ".got.plt");
|
| 2770 |
|
|
BFD_ASSERT (sgot != NULL);
|
| 2771 |
|
|
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
| 2772 |
|
|
|
| 2773 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
| 2774 |
|
|
{
|
| 2775 |
|
|
Elf32_External_Dyn * dyncon;
|
| 2776 |
|
|
Elf32_External_Dyn * dynconend;
|
| 2777 |
|
|
|
| 2778 |
|
|
BFD_ASSERT (sdyn != NULL);
|
| 2779 |
|
|
|
| 2780 |
|
|
dyncon = (Elf32_External_Dyn *) sdyn->contents;
|
| 2781 |
|
|
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
|
| 2782 |
|
|
|
| 2783 |
|
|
for (; dyncon < dynconend; dyncon++)
|
| 2784 |
|
|
{
|
| 2785 |
|
|
Elf_Internal_Dyn dyn;
|
| 2786 |
|
|
const char * name;
|
| 2787 |
|
|
asection * s;
|
| 2788 |
|
|
|
| 2789 |
|
|
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
|
| 2790 |
|
|
|
| 2791 |
|
|
switch (dyn.d_tag)
|
| 2792 |
|
|
{
|
| 2793 |
|
|
default:
|
| 2794 |
|
|
break;
|
| 2795 |
|
|
|
| 2796 |
|
|
case DT_PLTGOT:
|
| 2797 |
|
|
name = ".got";
|
| 2798 |
|
|
goto get_vma;
|
| 2799 |
|
|
|
| 2800 |
|
|
case DT_JMPREL:
|
| 2801 |
|
|
name = ".rela.plt";
|
| 2802 |
|
|
get_vma:
|
| 2803 |
|
|
s = bfd_get_section_by_name (output_bfd, name);
|
| 2804 |
|
|
BFD_ASSERT (s != NULL);
|
| 2805 |
|
|
dyn.d_un.d_ptr = s->vma;
|
| 2806 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 2807 |
|
|
break;
|
| 2808 |
|
|
|
| 2809 |
|
|
case DT_PLTRELSZ:
|
| 2810 |
|
|
s = bfd_get_section_by_name (output_bfd, ".rela.plt");
|
| 2811 |
|
|
BFD_ASSERT (s != NULL);
|
| 2812 |
|
|
dyn.d_un.d_val = s->size;
|
| 2813 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 2814 |
|
|
break;
|
| 2815 |
|
|
|
| 2816 |
|
|
case DT_RELASZ:
|
| 2817 |
|
|
/* My reading of the SVR4 ABI indicates that the
|
| 2818 |
|
|
procedure linkage table relocs (DT_JMPREL) should be
|
| 2819 |
|
|
included in the overall relocs (DT_RELA). This is
|
| 2820 |
|
|
what Solaris does. However, UnixWare can not handle
|
| 2821 |
|
|
that case. Therefore, we override the DT_RELASZ entry
|
| 2822 |
|
|
here to make it not include the JMPREL relocs. Since
|
| 2823 |
|
|
the linker script arranges for .rela.plt to follow all
|
| 2824 |
|
|
other relocation sections, we don't have to worry
|
| 2825 |
|
|
about changing the DT_RELA entry. */
|
| 2826 |
|
|
s = bfd_get_section_by_name (output_bfd, ".rela.plt");
|
| 2827 |
|
|
if (s != NULL)
|
| 2828 |
|
|
dyn.d_un.d_val -= s->size;
|
| 2829 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 2830 |
|
|
break;
|
| 2831 |
|
|
}
|
| 2832 |
|
|
}
|
| 2833 |
|
|
|
| 2834 |
|
|
}
|
| 2835 |
|
|
|
| 2836 |
|
|
/* Fill in the first three entries in the global offset table. */
|
| 2837 |
|
|
if (sgot->size > 0)
|
| 2838 |
|
|
{
|
| 2839 |
|
|
if (sdyn == NULL)
|
| 2840 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
|
| 2841 |
|
|
else
|
| 2842 |
|
|
bfd_put_32 (output_bfd,
|
| 2843 |
|
|
sdyn->output_section->vma + sdyn->output_offset,
|
| 2844 |
|
|
sgot->contents);
|
| 2845 |
|
|
}
|
| 2846 |
|
|
|
| 2847 |
|
|
elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
|
| 2848 |
|
|
|
| 2849 |
|
|
return TRUE;
|
| 2850 |
|
|
}
|
| 2851 |
|
|
|
| 2852 |
|
|
/* Given a .data.rel section and a .emreloc in-memory section, store
|
| 2853 |
|
|
relocation information into the .emreloc section which can be
|
| 2854 |
|
|
used at runtime to relocate the section. This is called by the
|
| 2855 |
|
|
linker when the --embedded-relocs switch is used. This is called
|
| 2856 |
|
|
after the add_symbols entry point has been called for all the
|
| 2857 |
|
|
objects, and before the final_link entry point is called. */
|
| 2858 |
|
|
|
| 2859 |
|
|
bfd_boolean
|
| 2860 |
|
|
bfd_cr16_elf32_create_embedded_relocs (bfd *abfd,
|
| 2861 |
|
|
struct bfd_link_info *info,
|
| 2862 |
|
|
asection *datasec,
|
| 2863 |
|
|
asection *relsec,
|
| 2864 |
|
|
char **errmsg)
|
| 2865 |
|
|
{
|
| 2866 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 2867 |
|
|
Elf_Internal_Sym *isymbuf = NULL;
|
| 2868 |
|
|
Elf_Internal_Rela *internal_relocs = NULL;
|
| 2869 |
|
|
Elf_Internal_Rela *irel, *irelend;
|
| 2870 |
|
|
bfd_byte *p;
|
| 2871 |
|
|
bfd_size_type amt;
|
| 2872 |
|
|
|
| 2873 |
|
|
BFD_ASSERT (! info->relocatable);
|
| 2874 |
|
|
|
| 2875 |
|
|
*errmsg = NULL;
|
| 2876 |
|
|
|
| 2877 |
|
|
if (datasec->reloc_count == 0)
|
| 2878 |
|
|
return TRUE;
|
| 2879 |
|
|
|
| 2880 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
| 2881 |
|
|
|
| 2882 |
|
|
/* Get a copy of the native relocations. */
|
| 2883 |
|
|
internal_relocs = (_bfd_elf_link_read_relocs
|
| 2884 |
|
|
(abfd, datasec, NULL, NULL, info->keep_memory));
|
| 2885 |
|
|
if (internal_relocs == NULL)
|
| 2886 |
|
|
goto error_return;
|
| 2887 |
|
|
|
| 2888 |
|
|
amt = (bfd_size_type) datasec->reloc_count * 8;
|
| 2889 |
|
|
relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt);
|
| 2890 |
|
|
if (relsec->contents == NULL)
|
| 2891 |
|
|
goto error_return;
|
| 2892 |
|
|
|
| 2893 |
|
|
p = relsec->contents;
|
| 2894 |
|
|
|
| 2895 |
|
|
irelend = internal_relocs + datasec->reloc_count;
|
| 2896 |
|
|
for (irel = internal_relocs; irel < irelend; irel++, p += 8)
|
| 2897 |
|
|
{
|
| 2898 |
|
|
asection *targetsec;
|
| 2899 |
|
|
|
| 2900 |
|
|
/* We are going to write a four byte longword into the runtime
|
| 2901 |
|
|
reloc section. The longword will be the address in the data
|
| 2902 |
|
|
section which must be relocated. It is followed by the name
|
| 2903 |
|
|
of the target section NUL-padded or truncated to 8
|
| 2904 |
|
|
characters. */
|
| 2905 |
|
|
|
| 2906 |
|
|
/* We can only relocate absolute longword relocs at run time. */
|
| 2907 |
|
|
if (!((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32a)
|
| 2908 |
|
|
|| (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32)))
|
| 2909 |
|
|
{
|
| 2910 |
|
|
*errmsg = _("unsupported reloc type");
|
| 2911 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 2912 |
|
|
goto error_return;
|
| 2913 |
|
|
}
|
| 2914 |
|
|
|
| 2915 |
|
|
/* Get the target section referred to by the reloc. */
|
| 2916 |
|
|
if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
|
| 2917 |
|
|
{
|
| 2918 |
|
|
/* A local symbol. */
|
| 2919 |
|
|
Elf_Internal_Sym *isym;
|
| 2920 |
|
|
|
| 2921 |
|
|
/* Read this BFD's local symbols if we haven't done so already. */
|
| 2922 |
|
|
if (isymbuf == NULL)
|
| 2923 |
|
|
{
|
| 2924 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 2925 |
|
|
if (isymbuf == NULL)
|
| 2926 |
|
|
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
|
| 2927 |
|
|
symtab_hdr->sh_info, 0,
|
| 2928 |
|
|
NULL, NULL, NULL);
|
| 2929 |
|
|
if (isymbuf == NULL)
|
| 2930 |
|
|
goto error_return;
|
| 2931 |
|
|
}
|
| 2932 |
|
|
|
| 2933 |
|
|
isym = isymbuf + ELF32_R_SYM (irel->r_info);
|
| 2934 |
|
|
targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
| 2935 |
|
|
}
|
| 2936 |
|
|
else
|
| 2937 |
|
|
{
|
| 2938 |
|
|
unsigned long indx;
|
| 2939 |
|
|
struct elf_link_hash_entry *h;
|
| 2940 |
|
|
|
| 2941 |
|
|
/* An external symbol. */
|
| 2942 |
|
|
indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
|
| 2943 |
|
|
h = elf_sym_hashes (abfd)[indx];
|
| 2944 |
|
|
BFD_ASSERT (h != NULL);
|
| 2945 |
|
|
if (h->root.type == bfd_link_hash_defined
|
| 2946 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 2947 |
|
|
targetsec = h->root.u.def.section;
|
| 2948 |
|
|
else
|
| 2949 |
|
|
targetsec = NULL;
|
| 2950 |
|
|
}
|
| 2951 |
|
|
|
| 2952 |
|
|
bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p);
|
| 2953 |
|
|
memset (p + 4, 0, 4);
|
| 2954 |
|
|
if ((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_NUM32a)
|
| 2955 |
|
|
&& (targetsec != NULL) )
|
| 2956 |
|
|
strncpy ((char *) p + 4, targetsec->output_section->name, 4);
|
| 2957 |
|
|
}
|
| 2958 |
|
|
|
| 2959 |
|
|
if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
|
| 2960 |
|
|
free (isymbuf);
|
| 2961 |
|
|
if (internal_relocs != NULL
|
| 2962 |
|
|
&& elf_section_data (datasec)->relocs != internal_relocs)
|
| 2963 |
|
|
free (internal_relocs);
|
| 2964 |
|
|
return TRUE;
|
| 2965 |
|
|
|
| 2966 |
|
|
error_return:
|
| 2967 |
|
|
if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
|
| 2968 |
|
|
free (isymbuf);
|
| 2969 |
|
|
if (internal_relocs != NULL
|
| 2970 |
|
|
&& elf_section_data (datasec)->relocs != internal_relocs)
|
| 2971 |
|
|
free (internal_relocs);
|
| 2972 |
|
|
return FALSE;
|
| 2973 |
|
|
}
|
| 2974 |
|
|
|
| 2975 |
|
|
|
| 2976 |
|
|
/* Classify relocation types, such that combreloc can sort them
|
| 2977 |
|
|
properly. */
|
| 2978 |
|
|
|
| 2979 |
|
|
static enum elf_reloc_type_class
|
| 2980 |
|
|
_bfd_cr16_elf_reloc_type_class (const Elf_Internal_Rela *rela)
|
| 2981 |
|
|
{
|
| 2982 |
|
|
switch ((int) ELF32_R_TYPE (rela->r_info))
|
| 2983 |
|
|
{
|
| 2984 |
|
|
case R_CR16_GOT_REGREL20:
|
| 2985 |
|
|
case R_CR16_GOTC_REGREL20:
|
| 2986 |
|
|
return reloc_class_relative;
|
| 2987 |
|
|
default:
|
| 2988 |
|
|
return reloc_class_normal;
|
| 2989 |
|
|
}
|
| 2990 |
|
|
}
|
| 2991 |
|
|
|
| 2992 |
|
|
/* Definitions for setting CR16 target vector. */
|
| 2993 |
|
|
#define TARGET_LITTLE_SYM bfd_elf32_cr16_vec
|
| 2994 |
|
|
#define TARGET_LITTLE_NAME "elf32-cr16"
|
| 2995 |
|
|
#define ELF_ARCH bfd_arch_cr16
|
| 2996 |
|
|
#define ELF_MACHINE_CODE EM_CR16
|
| 2997 |
|
|
#define ELF_MACHINE_ALT1 EM_CR16_OLD
|
| 2998 |
|
|
#define ELF_MAXPAGESIZE 0x1
|
| 2999 |
|
|
#define elf_symbol_leading_char '_'
|
| 3000 |
|
|
|
| 3001 |
|
|
#define bfd_elf32_bfd_reloc_type_lookup elf_cr16_reloc_type_lookup
|
| 3002 |
|
|
#define bfd_elf32_bfd_reloc_name_lookup elf_cr16_reloc_name_lookup
|
| 3003 |
|
|
#define elf_info_to_howto elf_cr16_info_to_howto
|
| 3004 |
|
|
#define elf_info_to_howto_rel 0
|
| 3005 |
|
|
#define elf_backend_relocate_section elf32_cr16_relocate_section
|
| 3006 |
|
|
#define bfd_elf32_bfd_relax_section elf32_cr16_relax_section
|
| 3007 |
|
|
#define bfd_elf32_bfd_get_relocated_section_contents \
|
| 3008 |
|
|
elf32_cr16_get_relocated_section_contents
|
| 3009 |
|
|
#define elf_backend_gc_mark_hook elf32_cr16_gc_mark_hook
|
| 3010 |
|
|
#define elf_backend_gc_sweep_hook elf32_cr16_gc_sweep_hook
|
| 3011 |
|
|
#define elf_backend_can_gc_sections 1
|
| 3012 |
|
|
#define elf_backend_rela_normal 1
|
| 3013 |
|
|
#define elf_backend_check_relocs cr16_elf_check_relocs
|
| 3014 |
|
|
/* So we can set bits in e_flags. */
|
| 3015 |
|
|
#define elf_backend_final_write_processing \
|
| 3016 |
|
|
_bfd_cr16_elf_final_write_processing
|
| 3017 |
|
|
#define elf_backend_object_p _bfd_cr16_elf_object_p
|
| 3018 |
|
|
|
| 3019 |
|
|
#define bfd_elf32_bfd_merge_private_bfd_data \
|
| 3020 |
|
|
_bfd_cr16_elf_merge_private_bfd_data
|
| 3021 |
|
|
|
| 3022 |
|
|
|
| 3023 |
|
|
#define bfd_elf32_bfd_link_hash_table_create \
|
| 3024 |
|
|
elf32_cr16_link_hash_table_create
|
| 3025 |
|
|
#define bfd_elf32_bfd_link_hash_table_free \
|
| 3026 |
|
|
elf32_cr16_link_hash_table_free
|
| 3027 |
|
|
|
| 3028 |
|
|
#define elf_backend_create_dynamic_sections \
|
| 3029 |
|
|
_bfd_cr16_elf_create_dynamic_sections
|
| 3030 |
|
|
#define elf_backend_adjust_dynamic_symbol \
|
| 3031 |
|
|
_bfd_cr16_elf_adjust_dynamic_symbol
|
| 3032 |
|
|
#define elf_backend_size_dynamic_sections \
|
| 3033 |
|
|
_bfd_cr16_elf_size_dynamic_sections
|
| 3034 |
|
|
#define elf_backend_omit_section_dynsym \
|
| 3035 |
|
|
((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
|
| 3036 |
|
|
#define elf_backend_finish_dynamic_symbol \
|
| 3037 |
|
|
_bfd_cr16_elf_finish_dynamic_symbol
|
| 3038 |
|
|
#define elf_backend_finish_dynamic_sections \
|
| 3039 |
|
|
_bfd_cr16_elf_finish_dynamic_sections
|
| 3040 |
|
|
|
| 3041 |
|
|
#define elf_backend_reloc_type_class _bfd_cr16_elf_reloc_type_class
|
| 3042 |
|
|
|
| 3043 |
|
|
|
| 3044 |
|
|
#define elf_backend_want_got_plt 1
|
| 3045 |
|
|
#define elf_backend_plt_readonly 1
|
| 3046 |
|
|
#define elf_backend_want_plt_sym 0
|
| 3047 |
|
|
#define elf_backend_got_header_size 12
|
| 3048 |
|
|
|
| 3049 |
|
|
#include "elf32-target.h"
|
