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julius |
/* BFD back-end for National Semiconductor's CR16 ELF
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Copyright 2007 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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/* 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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};
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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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0xff, /* 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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0xffff, /* 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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0xffffffff, /* 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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0xffffffff, /* 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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0xf, /* 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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0xf, /* 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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0x3fff, /* 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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0x3fff, /* 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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"R_CR16_REGREL16", /* name */
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FALSE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_CR16_REGREL20, /* type */
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0, /* rightshift */
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2, /* size */
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20, /* 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_REGREL20", /* name */
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FALSE, /* partial_inplace */
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0xfffff, /* src_mask */
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0xfffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_CR16_REGREL20a, /* type */
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0, /* rightshift */
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2, /* size */
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20, /* 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_REGREL20a", /* name */
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FALSE, /* partial_inplace */
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0xfffff, /* src_mask */
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0xfffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_CR16_ABS20, /* type */
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0, /* rightshift */
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2, /* size */
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20, /* 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_ABS20", /* name */
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FALSE, /* partial_inplace */
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0xfffff, /* src_mask */
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0xfffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_CR16_ABS24, /* type */
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0, /* rightshift */
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2, /* size */
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24, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_CR16_ABS24", /* name */
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FALSE, /* partial_inplace */
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0xffffff, /* src_mask */
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0xffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_CR16_IMM4, /* 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_IMM4", /* name */
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FALSE, /* partial_inplace */
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0xf, /* src_mask */
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0xf, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_CR16_IMM8, /* type */
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0, /* rightshift */
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0, /* size */
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8, /* bitsize */
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286 |
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FALSE, /* pc_relative */
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287 |
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0, /* bitpos */
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288 |
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complain_overflow_bitfield,/* complain_on_overflow */
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289 |
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bfd_elf_generic_reloc, /* special_function */
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"R_CR16_IMM8", /* name */
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FALSE, /* partial_inplace */
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0xff, /* src_mask */
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0xff, /* dst_mask */
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294 |
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FALSE), /* pcrel_offset */
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296 |
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HOWTO (R_CR16_IMM16, /* type */
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297 |
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0, /* rightshift */
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298 |
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1, /* size */
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299 |
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16, /* bitsize */
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300 |
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FALSE, /* pc_relative */
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301 |
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0, /* bitpos */
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302 |
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complain_overflow_bitfield,/* complain_on_overflow */
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303 |
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bfd_elf_generic_reloc, /* special_function */
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"R_CR16_IMM16", /* name */
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FALSE, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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310 |
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HOWTO (R_CR16_IMM20, /* type */
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311 |
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0, /* rightshift */
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312 |
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2, /* size */
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20, /* bitsize */
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314 |
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FALSE, /* pc_relative */
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315 |
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0, /* bitpos */
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316 |
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complain_overflow_bitfield,/* complain_on_overflow */
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317 |
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bfd_elf_generic_reloc, /* special_function */
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318 |
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"R_CR16_IMM20", /* name */
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319 |
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FALSE, /* partial_inplace */
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320 |
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0xfffff, /* src_mask */
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0xfffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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323 |
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324 |
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HOWTO (R_CR16_IMM24, /* type */
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325 |
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0, /* rightshift */
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326 |
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2, /* size */
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327 |
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24, /* bitsize */
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328 |
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FALSE, /* pc_relative */
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329 |
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0, /* bitpos */
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330 |
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complain_overflow_bitfield,/* complain_on_overflow */
|
331 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
332 |
|
|
"R_CR16_IMM24", /* name */
|
333 |
|
|
FALSE, /* partial_inplace */
|
334 |
|
|
0xffffff, /* src_mask */
|
335 |
|
|
0xffffff, /* dst_mask */
|
336 |
|
|
FALSE), /* pcrel_offset */
|
337 |
|
|
|
338 |
|
|
HOWTO (R_CR16_IMM32, /* type */
|
339 |
|
|
0, /* rightshift */
|
340 |
|
|
2, /* size */
|
341 |
|
|
32, /* bitsize */
|
342 |
|
|
FALSE, /* pc_relative */
|
343 |
|
|
0, /* bitpos */
|
344 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
345 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
346 |
|
|
"R_CR16_IMM32", /* name */
|
347 |
|
|
FALSE, /* partial_inplace */
|
348 |
|
|
0xffffffff, /* src_mask */
|
349 |
|
|
0xffffffff, /* dst_mask */
|
350 |
|
|
FALSE), /* pcrel_offset */
|
351 |
|
|
|
352 |
|
|
HOWTO (R_CR16_IMM32a, /* type */
|
353 |
|
|
1, /* rightshift */
|
354 |
|
|
2, /* size */
|
355 |
|
|
32, /* bitsize */
|
356 |
|
|
FALSE, /* pc_relative */
|
357 |
|
|
0, /* bitpos */
|
358 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
359 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
360 |
|
|
"R_CR16_IMM32a", /* name */
|
361 |
|
|
FALSE, /* partial_inplace */
|
362 |
|
|
0xffffffff, /* src_mask */
|
363 |
|
|
0xffffffff, /* dst_mask */
|
364 |
|
|
FALSE), /* pcrel_offset */
|
365 |
|
|
|
366 |
|
|
HOWTO (R_CR16_DISP4, /* type */
|
367 |
|
|
1, /* rightshift */
|
368 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
369 |
|
|
4, /* bitsize */
|
370 |
|
|
TRUE, /* pc_relative */
|
371 |
|
|
0, /* bitpos */
|
372 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
373 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
374 |
|
|
"R_CR16_DISP4", /* name */
|
375 |
|
|
FALSE, /* partial_inplace */
|
376 |
|
|
0xf, /* src_mask */
|
377 |
|
|
0xf, /* dst_mask */
|
378 |
|
|
FALSE), /* pcrel_offset */
|
379 |
|
|
|
380 |
|
|
HOWTO (R_CR16_DISP8, /* type */
|
381 |
|
|
1, /* rightshift */
|
382 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
383 |
|
|
8, /* bitsize */
|
384 |
|
|
TRUE, /* pc_relative */
|
385 |
|
|
0, /* bitpos */
|
386 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
387 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
388 |
|
|
"R_CR16_DISP8", /* name */
|
389 |
|
|
FALSE, /* partial_inplace */
|
390 |
|
|
0x1ff, /* src_mask */
|
391 |
|
|
0x1ff, /* dst_mask */
|
392 |
|
|
FALSE), /* pcrel_offset */
|
393 |
|
|
|
394 |
|
|
HOWTO (R_CR16_DISP16, /* type */
|
395 |
|
|
0, /* rightshift REVIITS: To sync with WinIDEA*/
|
396 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
397 |
|
|
16, /* bitsize */
|
398 |
|
|
TRUE, /* pc_relative */
|
399 |
|
|
0, /* bitpos */
|
400 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
401 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
402 |
|
|
"R_CR16_DISP16", /* name */
|
403 |
|
|
FALSE, /* partial_inplace */
|
404 |
|
|
0x1ffff, /* src_mask */
|
405 |
|
|
0x1ffff, /* dst_mask */
|
406 |
|
|
FALSE), /* pcrel_offset */
|
407 |
|
|
/* REVISIT: DISP24 should be left-shift by 2 as per ISA doc
|
408 |
|
|
but its not done, to sync with WinIDEA and CR16 4.1 tools */
|
409 |
|
|
HOWTO (R_CR16_DISP24, /* type */
|
410 |
|
|
0, /* rightshift */
|
411 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
412 |
|
|
24, /* bitsize */
|
413 |
|
|
TRUE, /* pc_relative */
|
414 |
|
|
0, /* bitpos */
|
415 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
416 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
417 |
|
|
"R_CR16_DISP24", /* name */
|
418 |
|
|
FALSE, /* partial_inplace */
|
419 |
|
|
0x1ffffff, /* src_mask */
|
420 |
|
|
0x1ffffff, /* dst_mask */
|
421 |
|
|
FALSE), /* pcrel_offset */
|
422 |
|
|
|
423 |
|
|
HOWTO (R_CR16_DISP24a, /* type */
|
424 |
|
|
0, /* rightshift */
|
425 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
426 |
|
|
24, /* bitsize */
|
427 |
|
|
TRUE, /* pc_relative */
|
428 |
|
|
0, /* bitpos */
|
429 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
430 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
431 |
|
|
"R_CR16_DISP24a", /* name */
|
432 |
|
|
FALSE, /* partial_inplace */
|
433 |
|
|
0xffffff, /* src_mask */
|
434 |
|
|
0xffffff, /* dst_mask */
|
435 |
|
|
FALSE), /* pcrel_offset */
|
436 |
|
|
|
437 |
|
|
/* An 8 bit switch table entry. This is generated for an expression
|
438 |
|
|
such as ``.byte L1 - L2''. The offset holds the difference
|
439 |
|
|
between the reloc address and L2. */
|
440 |
|
|
HOWTO (R_CR16_SWITCH8, /* type */
|
441 |
|
|
0, /* rightshift */
|
442 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
443 |
|
|
8, /* bitsize */
|
444 |
|
|
FALSE, /* pc_relative */
|
445 |
|
|
0, /* bitpos */
|
446 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
447 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
448 |
|
|
"R_CR16_SWITCH8", /* name */
|
449 |
|
|
FALSE, /* partial_inplace */
|
450 |
|
|
0xff, /* src_mask */
|
451 |
|
|
0xff, /* dst_mask */
|
452 |
|
|
TRUE), /* pcrel_offset */
|
453 |
|
|
|
454 |
|
|
/* A 16 bit switch table entry. This is generated for an expression
|
455 |
|
|
such as ``.word L1 - L2''. The offset holds the difference
|
456 |
|
|
between the reloc address and L2. */
|
457 |
|
|
HOWTO (R_CR16_SWITCH16, /* type */
|
458 |
|
|
0, /* rightshift */
|
459 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
460 |
|
|
16, /* bitsize */
|
461 |
|
|
FALSE, /* pc_relative */
|
462 |
|
|
0, /* bitpos */
|
463 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
464 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
465 |
|
|
"R_CR16_SWITCH16", /* name */
|
466 |
|
|
FALSE, /* partial_inplace */
|
467 |
|
|
0xffff, /* src_mask */
|
468 |
|
|
0xffff, /* dst_mask */
|
469 |
|
|
TRUE), /* pcrel_offset */
|
470 |
|
|
|
471 |
|
|
/* A 32 bit switch table entry. This is generated for an expression
|
472 |
|
|
such as ``.long L1 - L2''. The offset holds the difference
|
473 |
|
|
between the reloc address and L2. */
|
474 |
|
|
HOWTO (R_CR16_SWITCH32, /* type */
|
475 |
|
|
0, /* rightshift */
|
476 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
477 |
|
|
32, /* bitsize */
|
478 |
|
|
FALSE, /* pc_relative */
|
479 |
|
|
0, /* bitpos */
|
480 |
|
|
complain_overflow_unsigned, /* complain_on_overflow */
|
481 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
482 |
|
|
"R_CR16_SWITCH32", /* name */
|
483 |
|
|
FALSE, /* partial_inplace */
|
484 |
|
|
0xffffffff, /* src_mask */
|
485 |
|
|
0xffffffff, /* dst_mask */
|
486 |
|
|
TRUE) /* pcrel_offset */
|
487 |
|
|
};
|
488 |
|
|
|
489 |
|
|
/* Retrieve a howto ptr using a BFD reloc_code. */
|
490 |
|
|
|
491 |
|
|
static reloc_howto_type *
|
492 |
|
|
elf_cr16_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
493 |
|
|
bfd_reloc_code_real_type code)
|
494 |
|
|
{
|
495 |
|
|
unsigned int i;
|
496 |
|
|
|
497 |
|
|
for (i = 0; i < R_CR16_MAX; i++)
|
498 |
|
|
if (code == cr16_reloc_map[i].bfd_reloc_enum)
|
499 |
|
|
return &cr16_elf_howto_table[cr16_reloc_map[i].cr16_reloc_type];
|
500 |
|
|
|
501 |
|
|
_bfd_error_handler ("Unsupported CR16 relocation type: 0x%x\n", code);
|
502 |
|
|
return NULL;
|
503 |
|
|
}
|
504 |
|
|
|
505 |
|
|
static reloc_howto_type *
|
506 |
|
|
elf_cr16_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
507 |
|
|
const char *r_name)
|
508 |
|
|
{
|
509 |
|
|
unsigned int i;
|
510 |
|
|
|
511 |
|
|
for (i = 0; ARRAY_SIZE (cr16_elf_howto_table); i++)
|
512 |
|
|
if (cr16_elf_howto_table[i].name != NULL
|
513 |
|
|
&& strcasecmp (cr16_elf_howto_table[i].name, r_name) == 0)
|
514 |
|
|
return cr16_elf_howto_table + i;
|
515 |
|
|
|
516 |
|
|
return NULL;
|
517 |
|
|
}
|
518 |
|
|
|
519 |
|
|
/* Retrieve a howto ptr using an internal relocation entry. */
|
520 |
|
|
|
521 |
|
|
static void
|
522 |
|
|
elf_cr16_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
|
523 |
|
|
Elf_Internal_Rela *dst)
|
524 |
|
|
{
|
525 |
|
|
unsigned int r_type = ELF32_R_TYPE (dst->r_info);
|
526 |
|
|
|
527 |
|
|
BFD_ASSERT (r_type < (unsigned int) R_CR16_MAX);
|
528 |
|
|
cache_ptr->howto = &cr16_elf_howto_table[r_type];
|
529 |
|
|
}
|
530 |
|
|
|
531 |
|
|
/* Perform a relocation as part of a final link. */
|
532 |
|
|
|
533 |
|
|
static bfd_reloc_status_type
|
534 |
|
|
cr16_elf_final_link_relocate (reloc_howto_type *howto,
|
535 |
|
|
bfd *input_bfd,
|
536 |
|
|
bfd *output_bfd ATTRIBUTE_UNUSED,
|
537 |
|
|
asection *input_section,
|
538 |
|
|
bfd_byte *contents,
|
539 |
|
|
bfd_vma offset,
|
540 |
|
|
bfd_vma Rvalue,
|
541 |
|
|
bfd_vma addend,
|
542 |
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
543 |
|
|
asection *sec ATTRIBUTE_UNUSED,
|
544 |
|
|
int is_local ATTRIBUTE_UNUSED)
|
545 |
|
|
{
|
546 |
|
|
unsigned short r_type = howto->type;
|
547 |
|
|
bfd_byte *hit_data = contents + offset;
|
548 |
|
|
bfd_vma reloc_bits, check, Rvalue1;
|
549 |
|
|
|
550 |
|
|
switch (r_type)
|
551 |
|
|
{
|
552 |
|
|
case R_CR16_IMM4:
|
553 |
|
|
case R_CR16_IMM20:
|
554 |
|
|
case R_CR16_ABS20:
|
555 |
|
|
break;
|
556 |
|
|
|
557 |
|
|
case R_CR16_IMM8:
|
558 |
|
|
case R_CR16_IMM16:
|
559 |
|
|
case R_CR16_IMM32:
|
560 |
|
|
case R_CR16_IMM32a:
|
561 |
|
|
case R_CR16_REGREL4:
|
562 |
|
|
case R_CR16_REGREL4a:
|
563 |
|
|
case R_CR16_REGREL14:
|
564 |
|
|
case R_CR16_REGREL14a:
|
565 |
|
|
case R_CR16_REGREL16:
|
566 |
|
|
case R_CR16_REGREL20:
|
567 |
|
|
case R_CR16_ABS24:
|
568 |
|
|
case R_CR16_DISP16:
|
569 |
|
|
case R_CR16_DISP24:
|
570 |
|
|
/* 'hit_data' is relative to the start of the instruction, not the
|
571 |
|
|
relocation offset. Advance it to account for the exact offset. */
|
572 |
|
|
hit_data += 2;
|
573 |
|
|
break;
|
574 |
|
|
|
575 |
|
|
case R_CR16_NONE:
|
576 |
|
|
return bfd_reloc_ok;
|
577 |
|
|
break;
|
578 |
|
|
|
579 |
|
|
case R_CR16_DISP4:
|
580 |
|
|
if (is_local)
|
581 |
|
|
Rvalue += -1;
|
582 |
|
|
break;
|
583 |
|
|
|
584 |
|
|
case R_CR16_DISP8:
|
585 |
|
|
case R_CR16_DISP24a:
|
586 |
|
|
if (is_local)
|
587 |
|
|
Rvalue -= -1;
|
588 |
|
|
break;
|
589 |
|
|
|
590 |
|
|
case R_CR16_SWITCH8:
|
591 |
|
|
case R_CR16_SWITCH16:
|
592 |
|
|
case R_CR16_SWITCH32:
|
593 |
|
|
/* We only care about the addend, where the difference between
|
594 |
|
|
expressions is kept. */
|
595 |
|
|
Rvalue = 0;
|
596 |
|
|
|
597 |
|
|
default:
|
598 |
|
|
break;
|
599 |
|
|
}
|
600 |
|
|
|
601 |
|
|
if (howto->pc_relative)
|
602 |
|
|
{
|
603 |
|
|
/* Subtract the address of the section containing the location. */
|
604 |
|
|
Rvalue -= (input_section->output_section->vma
|
605 |
|
|
+ input_section->output_offset);
|
606 |
|
|
/* Subtract the position of the location within the section. */
|
607 |
|
|
Rvalue -= offset;
|
608 |
|
|
}
|
609 |
|
|
|
610 |
|
|
/* Add in supplied addend. */
|
611 |
|
|
Rvalue += addend;
|
612 |
|
|
|
613 |
|
|
/* Complain if the bitfield overflows, whether it is considered
|
614 |
|
|
as signed or unsigned. */
|
615 |
|
|
check = Rvalue >> howto->rightshift;
|
616 |
|
|
|
617 |
|
|
/* Assumes two's complement. This expression avoids
|
618 |
|
|
overflow if howto->bitsize is the number of bits in
|
619 |
|
|
bfd_vma. */
|
620 |
|
|
reloc_bits = (((1 << (howto->bitsize - 1)) - 1) << 1) | 1;
|
621 |
|
|
|
622 |
|
|
if (((bfd_vma) check & ~reloc_bits) != 0
|
623 |
|
|
&& (((bfd_vma) check & ~reloc_bits)
|
624 |
|
|
!= (-(bfd_vma) 1 & ~reloc_bits)))
|
625 |
|
|
{
|
626 |
|
|
/* The above right shift is incorrect for a signed
|
627 |
|
|
value. See if turning on the upper bits fixes the
|
628 |
|
|
overflow. */
|
629 |
|
|
if (howto->rightshift && (bfd_signed_vma) Rvalue < 0)
|
630 |
|
|
{
|
631 |
|
|
check |= ((bfd_vma) - 1
|
632 |
|
|
& ~((bfd_vma) - 1
|
633 |
|
|
>> howto->rightshift));
|
634 |
|
|
|
635 |
|
|
if (((bfd_vma) check & ~reloc_bits)
|
636 |
|
|
!= (-(bfd_vma) 1 & ~reloc_bits))
|
637 |
|
|
return bfd_reloc_overflow;
|
638 |
|
|
}
|
639 |
|
|
else
|
640 |
|
|
return bfd_reloc_overflow;
|
641 |
|
|
}
|
642 |
|
|
|
643 |
|
|
/* Drop unwanted bits from the value we are relocating to. */
|
644 |
|
|
Rvalue >>= (bfd_vma) howto->rightshift;
|
645 |
|
|
|
646 |
|
|
/* Apply dst_mask to select only relocatable part of the insn. */
|
647 |
|
|
Rvalue &= howto->dst_mask;
|
648 |
|
|
|
649 |
|
|
switch (howto->size)
|
650 |
|
|
{
|
651 |
|
|
case 0:
|
652 |
|
|
if (r_type == R_CR16_DISP8)
|
653 |
|
|
{
|
654 |
|
|
Rvalue1 = bfd_get_16 (input_bfd, hit_data);
|
655 |
|
|
Rvalue = ((Rvalue1 & 0xf000) | ((Rvalue << 4) & 0xf00)
|
656 |
|
|
| (Rvalue1 & 0x00f0) | (Rvalue & 0xf));
|
657 |
|
|
bfd_put_16 (input_bfd, Rvalue, hit_data);
|
658 |
|
|
}
|
659 |
|
|
else if (r_type == R_CR16_IMM4)
|
660 |
|
|
{
|
661 |
|
|
Rvalue1 = bfd_get_16 (input_bfd, hit_data);
|
662 |
|
|
Rvalue = (((Rvalue1 & 0xff) << 8) | ((Rvalue << 4) & 0xf0)
|
663 |
|
|
| ((Rvalue1 & 0x0f00) >> 8));
|
664 |
|
|
bfd_put_16 (input_bfd, Rvalue, hit_data);
|
665 |
|
|
}
|
666 |
|
|
else if (r_type == R_CR16_DISP4)
|
667 |
|
|
{
|
668 |
|
|
Rvalue1 = bfd_get_16 (input_bfd, hit_data);
|
669 |
|
|
Rvalue = (Rvalue1 | ((Rvalue & 0xf) << 4));
|
670 |
|
|
bfd_put_16 (input_bfd, Rvalue, hit_data);
|
671 |
|
|
}
|
672 |
|
|
else
|
673 |
|
|
{
|
674 |
|
|
bfd_put_8 (input_bfd, (unsigned char) Rvalue, hit_data);
|
675 |
|
|
}
|
676 |
|
|
break;
|
677 |
|
|
|
678 |
|
|
case 1:
|
679 |
|
|
if (r_type == R_CR16_DISP16)
|
680 |
|
|
{
|
681 |
|
|
Rvalue |= (bfd_get_16 (input_bfd, hit_data));
|
682 |
|
|
Rvalue = ((Rvalue & 0xfffe) | ((Rvalue >> 16) & 0x1));
|
683 |
|
|
}
|
684 |
|
|
|
685 |
|
|
bfd_put_16 (input_bfd, Rvalue, hit_data);
|
686 |
|
|
break;
|
687 |
|
|
|
688 |
|
|
case 2:
|
689 |
|
|
if ((r_type == R_CR16_ABS20) || (r_type == R_CR16_IMM20))
|
690 |
|
|
{
|
691 |
|
|
bfd_put_16 (input_bfd, (bfd_get_16 (input_bfd, hit_data))
|
692 |
|
|
| ((Rvalue >> 16) & 0xf), hit_data);
|
693 |
|
|
bfd_put_16 (input_bfd, (Rvalue) & 0xffff, hit_data + 2);
|
694 |
|
|
}
|
695 |
|
|
else
|
696 |
|
|
{
|
697 |
|
|
if (r_type == R_CR16_ABS24)
|
698 |
|
|
{
|
699 |
|
|
Rvalue = ((((Rvalue >> 20)& 0xf) | (((Rvalue >> 16) & 0xf) << 8)
|
700 |
|
|
| (bfd_get_16 (input_bfd, hit_data)))
|
701 |
|
|
| ((Rvalue & 0xffff) << 16));
|
702 |
|
|
}
|
703 |
|
|
if (r_type == R_CR16_DISP24)
|
704 |
|
|
{
|
705 |
|
|
Rvalue = ((((Rvalue >> 20)& 0xf) | (((Rvalue >>16) & 0xf) << 8)
|
706 |
|
|
| (bfd_get_16 (input_bfd, hit_data)))
|
707 |
|
|
| (((Rvalue & 0xfffe)
|
708 |
|
|
| ((Rvalue >> 24) & 0x1)) << 16));
|
709 |
|
|
}
|
710 |
|
|
else if ((r_type == R_CR16_IMM32) ||(r_type == R_CR16_IMM32a))
|
711 |
|
|
{
|
712 |
|
|
Rvalue = (((Rvalue >> 16)& 0xffff)
|
713 |
|
|
| (bfd_get_16 (input_bfd, hit_data)))
|
714 |
|
|
| ((Rvalue & 0xffff) << 16);
|
715 |
|
|
}
|
716 |
|
|
else if (r_type == R_CR16_DISP24a)
|
717 |
|
|
{
|
718 |
|
|
Rvalue = (((Rvalue & 0xfffffe) | (Rvalue >> 23)));
|
719 |
|
|
Rvalue = ((Rvalue >> 16) & 0xff) | ((Rvalue & 0xffff) << 16)
|
720 |
|
|
| (bfd_get_32 (input_bfd, hit_data));
|
721 |
|
|
}
|
722 |
|
|
|
723 |
|
|
bfd_put_32 (input_bfd, Rvalue, hit_data);
|
724 |
|
|
}
|
725 |
|
|
break;
|
726 |
|
|
|
727 |
|
|
default:
|
728 |
|
|
return bfd_reloc_notsupported;
|
729 |
|
|
}
|
730 |
|
|
|
731 |
|
|
return bfd_reloc_ok;
|
732 |
|
|
}
|
733 |
|
|
|
734 |
|
|
/* Delete some bytes from a section while relaxing. */
|
735 |
|
|
|
736 |
|
|
static bfd_boolean
|
737 |
|
|
elf32_cr16_relax_delete_bytes (struct bfd_link_info *link_info, bfd *abfd,
|
738 |
|
|
asection *sec, bfd_vma addr, int count)
|
739 |
|
|
{
|
740 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
741 |
|
|
unsigned int sec_shndx;
|
742 |
|
|
bfd_byte *contents;
|
743 |
|
|
Elf_Internal_Rela *irel, *irelend;
|
744 |
|
|
Elf_Internal_Rela *irelalign;
|
745 |
|
|
bfd_vma toaddr;
|
746 |
|
|
Elf_Internal_Sym *isym;
|
747 |
|
|
Elf_Internal_Sym *isymend;
|
748 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
749 |
|
|
struct elf_link_hash_entry **end_hashes;
|
750 |
|
|
struct elf_link_hash_entry **start_hashes;
|
751 |
|
|
unsigned int symcount;
|
752 |
|
|
|
753 |
|
|
sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
|
754 |
|
|
|
755 |
|
|
contents = elf_section_data (sec)->this_hdr.contents;
|
756 |
|
|
|
757 |
|
|
/* The deletion must stop at the next ALIGN reloc for an aligment
|
758 |
|
|
power larger than the number of bytes we are deleting. */
|
759 |
|
|
irelalign = NULL;
|
760 |
|
|
toaddr = sec->size;
|
761 |
|
|
|
762 |
|
|
irel = elf_section_data (sec)->relocs;
|
763 |
|
|
irelend = irel + sec->reloc_count;
|
764 |
|
|
|
765 |
|
|
/* Actually delete the bytes. */
|
766 |
|
|
memmove (contents + addr, contents + addr + count,
|
767 |
|
|
(size_t) (toaddr - addr - count));
|
768 |
|
|
sec->size -= count;
|
769 |
|
|
|
770 |
|
|
/* Adjust all the relocs. */
|
771 |
|
|
for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
|
772 |
|
|
/* Get the new reloc address. */
|
773 |
|
|
if ((irel->r_offset > addr && irel->r_offset < toaddr))
|
774 |
|
|
irel->r_offset -= count;
|
775 |
|
|
|
776 |
|
|
/* Adjust the local symbols defined in this section. */
|
777 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
778 |
|
|
isym = (Elf_Internal_Sym *) symtab_hdr->contents;
|
779 |
|
|
for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
|
780 |
|
|
{
|
781 |
|
|
if (isym->st_shndx == sec_shndx
|
782 |
|
|
&& isym->st_value > addr
|
783 |
|
|
&& isym->st_value < toaddr)
|
784 |
|
|
{
|
785 |
|
|
/* Adjust the addend of SWITCH relocations in this section,
|
786 |
|
|
which reference this local symbol. */
|
787 |
|
|
for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
|
788 |
|
|
{
|
789 |
|
|
unsigned long r_symndx;
|
790 |
|
|
Elf_Internal_Sym *rsym;
|
791 |
|
|
bfd_vma addsym, subsym;
|
792 |
|
|
|
793 |
|
|
/* Skip if not a SWITCH relocation. */
|
794 |
|
|
if (ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH8
|
795 |
|
|
&& ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH16
|
796 |
|
|
&& ELF32_R_TYPE (irel->r_info) != (int) R_CR16_SWITCH32)
|
797 |
|
|
continue;
|
798 |
|
|
|
799 |
|
|
r_symndx = ELF32_R_SYM (irel->r_info);
|
800 |
|
|
rsym = (Elf_Internal_Sym *) symtab_hdr->contents + r_symndx;
|
801 |
|
|
|
802 |
|
|
/* Skip if not the local adjusted symbol. */
|
803 |
|
|
if (rsym != isym)
|
804 |
|
|
continue;
|
805 |
|
|
|
806 |
|
|
addsym = isym->st_value;
|
807 |
|
|
subsym = addsym - irel->r_addend;
|
808 |
|
|
|
809 |
|
|
/* Fix the addend only when -->> (addsym > addr >= subsym). */
|
810 |
|
|
if (subsym <= addr)
|
811 |
|
|
irel->r_addend -= count;
|
812 |
|
|
else
|
813 |
|
|
continue;
|
814 |
|
|
}
|
815 |
|
|
|
816 |
|
|
isym->st_value -= count;
|
817 |
|
|
}
|
818 |
|
|
}
|
819 |
|
|
|
820 |
|
|
/* Now adjust the global symbols defined in this section. */
|
821 |
|
|
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
822 |
|
|
- symtab_hdr->sh_info);
|
823 |
|
|
sym_hashes = start_hashes = elf_sym_hashes (abfd);
|
824 |
|
|
end_hashes = sym_hashes + symcount;
|
825 |
|
|
|
826 |
|
|
for (; sym_hashes < end_hashes; sym_hashes++)
|
827 |
|
|
{
|
828 |
|
|
struct elf_link_hash_entry *sym_hash = *sym_hashes;
|
829 |
|
|
|
830 |
|
|
/* The '--wrap SYMBOL' option is causing a pain when the object file,
|
831 |
|
|
containing the definition of __wrap_SYMBOL, includes a direct
|
832 |
|
|
call to SYMBOL as well. Since both __wrap_SYMBOL and SYMBOL reference
|
833 |
|
|
the same symbol (which is __wrap_SYMBOL), but still exist as two
|
834 |
|
|
different symbols in 'sym_hashes', we don't want to adjust
|
835 |
|
|
the global symbol __wrap_SYMBOL twice.
|
836 |
|
|
This check is only relevant when symbols are being wrapped. */
|
837 |
|
|
if (link_info->wrap_hash != NULL)
|
838 |
|
|
{
|
839 |
|
|
struct elf_link_hash_entry **cur_sym_hashes;
|
840 |
|
|
|
841 |
|
|
/* Loop only over the symbols whom been already checked. */
|
842 |
|
|
for (cur_sym_hashes = start_hashes; cur_sym_hashes < sym_hashes;
|
843 |
|
|
cur_sym_hashes++)
|
844 |
|
|
/* If the current symbol is identical to 'sym_hash', that means
|
845 |
|
|
the symbol was already adjusted (or at least checked). */
|
846 |
|
|
if (*cur_sym_hashes == sym_hash)
|
847 |
|
|
break;
|
848 |
|
|
|
849 |
|
|
/* Don't adjust the symbol again. */
|
850 |
|
|
if (cur_sym_hashes < sym_hashes)
|
851 |
|
|
continue;
|
852 |
|
|
}
|
853 |
|
|
|
854 |
|
|
if ((sym_hash->root.type == bfd_link_hash_defined
|
855 |
|
|
|| sym_hash->root.type == bfd_link_hash_defweak)
|
856 |
|
|
&& sym_hash->root.u.def.section == sec
|
857 |
|
|
&& sym_hash->root.u.def.value > addr
|
858 |
|
|
&& sym_hash->root.u.def.value < toaddr)
|
859 |
|
|
sym_hash->root.u.def.value -= count;
|
860 |
|
|
}
|
861 |
|
|
|
862 |
|
|
return TRUE;
|
863 |
|
|
}
|
864 |
|
|
|
865 |
|
|
/* Relocate a CR16 ELF section. */
|
866 |
|
|
|
867 |
|
|
static bfd_boolean
|
868 |
|
|
elf32_cr16_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
|
869 |
|
|
bfd *input_bfd, asection *input_section,
|
870 |
|
|
bfd_byte *contents, Elf_Internal_Rela *relocs,
|
871 |
|
|
Elf_Internal_Sym *local_syms,
|
872 |
|
|
asection **local_sections)
|
873 |
|
|
{
|
874 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
875 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
876 |
|
|
Elf_Internal_Rela *rel, *relend;
|
877 |
|
|
|
878 |
|
|
if (info->relocatable)
|
879 |
|
|
return TRUE;
|
880 |
|
|
|
881 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
882 |
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
883 |
|
|
|
884 |
|
|
rel = relocs;
|
885 |
|
|
relend = relocs + input_section->reloc_count;
|
886 |
|
|
for (; rel < relend; rel++)
|
887 |
|
|
{
|
888 |
|
|
int r_type;
|
889 |
|
|
reloc_howto_type *howto;
|
890 |
|
|
unsigned long r_symndx;
|
891 |
|
|
Elf_Internal_Sym *sym;
|
892 |
|
|
asection *sec;
|
893 |
|
|
struct elf_link_hash_entry *h;
|
894 |
|
|
bfd_vma relocation;
|
895 |
|
|
bfd_reloc_status_type r;
|
896 |
|
|
|
897 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
898 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
899 |
|
|
howto = cr16_elf_howto_table + (r_type);
|
900 |
|
|
|
901 |
|
|
h = NULL;
|
902 |
|
|
sym = NULL;
|
903 |
|
|
sec = NULL;
|
904 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
905 |
|
|
{
|
906 |
|
|
sym = local_syms + r_symndx;
|
907 |
|
|
sec = local_sections[r_symndx];
|
908 |
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
909 |
|
|
}
|
910 |
|
|
else
|
911 |
|
|
{
|
912 |
|
|
bfd_boolean unresolved_reloc, warned;
|
913 |
|
|
|
914 |
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
915 |
|
|
r_symndx, symtab_hdr, sym_hashes,
|
916 |
|
|
h, sec, relocation,
|
917 |
|
|
unresolved_reloc, warned);
|
918 |
|
|
}
|
919 |
|
|
|
920 |
|
|
r = cr16_elf_final_link_relocate (howto, input_bfd, output_bfd,
|
921 |
|
|
input_section,
|
922 |
|
|
contents, rel->r_offset,
|
923 |
|
|
relocation, rel->r_addend,
|
924 |
|
|
info, sec, h == NULL);
|
925 |
|
|
|
926 |
|
|
if (r != bfd_reloc_ok)
|
927 |
|
|
{
|
928 |
|
|
const char *name;
|
929 |
|
|
const char *msg = NULL;
|
930 |
|
|
|
931 |
|
|
if (h != NULL)
|
932 |
|
|
name = h->root.root.string;
|
933 |
|
|
else
|
934 |
|
|
{
|
935 |
|
|
name = (bfd_elf_string_from_elf_section
|
936 |
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name));
|
937 |
|
|
if (name == NULL || *name == '\0')
|
938 |
|
|
name = bfd_section_name (input_bfd, sec);
|
939 |
|
|
}
|
940 |
|
|
|
941 |
|
|
switch (r)
|
942 |
|
|
{
|
943 |
|
|
case bfd_reloc_overflow:
|
944 |
|
|
if (!((*info->callbacks->reloc_overflow)
|
945 |
|
|
(info, (h ? &h->root : NULL), name, howto->name,
|
946 |
|
|
(bfd_vma) 0, input_bfd, input_section,
|
947 |
|
|
rel->r_offset)))
|
948 |
|
|
return FALSE;
|
949 |
|
|
break;
|
950 |
|
|
|
951 |
|
|
case bfd_reloc_undefined:
|
952 |
|
|
if (!((*info->callbacks->undefined_symbol)
|
953 |
|
|
(info, name, input_bfd, input_section,
|
954 |
|
|
rel->r_offset, TRUE)))
|
955 |
|
|
return FALSE;
|
956 |
|
|
break;
|
957 |
|
|
|
958 |
|
|
case bfd_reloc_outofrange:
|
959 |
|
|
msg = _("internal error: out of range error");
|
960 |
|
|
goto common_error;
|
961 |
|
|
|
962 |
|
|
case bfd_reloc_notsupported:
|
963 |
|
|
msg = _("internal error: unsupported relocation error");
|
964 |
|
|
goto common_error;
|
965 |
|
|
|
966 |
|
|
case bfd_reloc_dangerous:
|
967 |
|
|
msg = _("internal error: dangerous error");
|
968 |
|
|
goto common_error;
|
969 |
|
|
|
970 |
|
|
default:
|
971 |
|
|
msg = _("internal error: unknown error");
|
972 |
|
|
/* Fall through. */
|
973 |
|
|
|
974 |
|
|
common_error:
|
975 |
|
|
if (!((*info->callbacks->warning)
|
976 |
|
|
(info, msg, name, input_bfd, input_section,
|
977 |
|
|
rel->r_offset)))
|
978 |
|
|
return FALSE;
|
979 |
|
|
break;
|
980 |
|
|
}
|
981 |
|
|
}
|
982 |
|
|
}
|
983 |
|
|
|
984 |
|
|
return TRUE;
|
985 |
|
|
}
|
986 |
|
|
|
987 |
|
|
/* This is a version of bfd_generic_get_relocated_section_contents
|
988 |
|
|
which uses elf32_cr16_relocate_section. */
|
989 |
|
|
|
990 |
|
|
static bfd_byte *
|
991 |
|
|
elf32_cr16_get_relocated_section_contents (bfd *output_bfd,
|
992 |
|
|
struct bfd_link_info *link_info,
|
993 |
|
|
struct bfd_link_order *link_order,
|
994 |
|
|
bfd_byte *data,
|
995 |
|
|
bfd_boolean relocatable,
|
996 |
|
|
asymbol **symbols)
|
997 |
|
|
{
|
998 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
999 |
|
|
asection *input_section = link_order->u.indirect.section;
|
1000 |
|
|
bfd *input_bfd = input_section->owner;
|
1001 |
|
|
asection **sections = NULL;
|
1002 |
|
|
Elf_Internal_Rela *internal_relocs = NULL;
|
1003 |
|
|
Elf_Internal_Sym *isymbuf = NULL;
|
1004 |
|
|
|
1005 |
|
|
/* We only need to handle the case of relaxing, or of having a
|
1006 |
|
|
particular set of section contents, specially. */
|
1007 |
|
|
if (relocatable
|
1008 |
|
|
|| elf_section_data (input_section)->this_hdr.contents == NULL)
|
1009 |
|
|
return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
|
1010 |
|
|
link_order, data,
|
1011 |
|
|
relocatable,
|
1012 |
|
|
symbols);
|
1013 |
|
|
|
1014 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
1015 |
|
|
|
1016 |
|
|
memcpy (data, elf_section_data (input_section)->this_hdr.contents,
|
1017 |
|
|
(size_t) input_section->size);
|
1018 |
|
|
|
1019 |
|
|
if ((input_section->flags & SEC_RELOC) != 0
|
1020 |
|
|
&& input_section->reloc_count > 0)
|
1021 |
|
|
{
|
1022 |
|
|
Elf_Internal_Sym *isym;
|
1023 |
|
|
Elf_Internal_Sym *isymend;
|
1024 |
|
|
asection **secpp;
|
1025 |
|
|
bfd_size_type amt;
|
1026 |
|
|
|
1027 |
|
|
internal_relocs = _bfd_elf_link_read_relocs (input_bfd, input_section,
|
1028 |
|
|
NULL, NULL, FALSE);
|
1029 |
|
|
if (internal_relocs == NULL)
|
1030 |
|
|
goto error_return;
|
1031 |
|
|
|
1032 |
|
|
if (symtab_hdr->sh_info != 0)
|
1033 |
|
|
{
|
1034 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
1035 |
|
|
if (isymbuf == NULL)
|
1036 |
|
|
isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
|
1037 |
|
|
symtab_hdr->sh_info, 0,
|
1038 |
|
|
NULL, NULL, NULL);
|
1039 |
|
|
if (isymbuf == NULL)
|
1040 |
|
|
goto error_return;
|
1041 |
|
|
}
|
1042 |
|
|
|
1043 |
|
|
amt = symtab_hdr->sh_info;
|
1044 |
|
|
amt *= sizeof (asection *);
|
1045 |
|
|
sections = bfd_malloc (amt);
|
1046 |
|
|
if (sections == NULL && amt != 0)
|
1047 |
|
|
goto error_return;
|
1048 |
|
|
|
1049 |
|
|
isymend = isymbuf + symtab_hdr->sh_info;
|
1050 |
|
|
for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
|
1051 |
|
|
{
|
1052 |
|
|
asection *isec;
|
1053 |
|
|
|
1054 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
1055 |
|
|
isec = bfd_und_section_ptr;
|
1056 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
1057 |
|
|
isec = bfd_abs_section_ptr;
|
1058 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
1059 |
|
|
isec = bfd_com_section_ptr;
|
1060 |
|
|
else
|
1061 |
|
|
isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
|
1062 |
|
|
|
1063 |
|
|
*secpp = isec;
|
1064 |
|
|
}
|
1065 |
|
|
|
1066 |
|
|
if (! elf32_cr16_relocate_section (output_bfd, link_info, input_bfd,
|
1067 |
|
|
input_section, data, internal_relocs,
|
1068 |
|
|
isymbuf, sections))
|
1069 |
|
|
goto error_return;
|
1070 |
|
|
|
1071 |
|
|
if (sections != NULL)
|
1072 |
|
|
free (sections);
|
1073 |
|
|
if (isymbuf != NULL
|
1074 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
1075 |
|
|
free (isymbuf);
|
1076 |
|
|
if (elf_section_data (input_section)->relocs != internal_relocs)
|
1077 |
|
|
free (internal_relocs);
|
1078 |
|
|
}
|
1079 |
|
|
|
1080 |
|
|
return data;
|
1081 |
|
|
|
1082 |
|
|
error_return:
|
1083 |
|
|
if (sections != NULL)
|
1084 |
|
|
free (sections);
|
1085 |
|
|
if (isymbuf != NULL
|
1086 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
1087 |
|
|
free (isymbuf);
|
1088 |
|
|
if (internal_relocs != NULL
|
1089 |
|
|
&& elf_section_data (input_section)->relocs != internal_relocs)
|
1090 |
|
|
free (internal_relocs);
|
1091 |
|
|
return NULL;
|
1092 |
|
|
}
|
1093 |
|
|
|
1094 |
|
|
/* This function handles relaxing for the CR16.
|
1095 |
|
|
|
1096 |
|
|
There's quite a few relaxing opportunites available on the CR16:
|
1097 |
|
|
|
1098 |
|
|
* bcond:24 -> bcond:16 2 bytes
|
1099 |
|
|
* bcond:16 -> bcond:8 2 bytes
|
1100 |
|
|
* arithmetic imm32 -> arithmetic imm20/imm16 2 bytes
|
1101 |
|
|
* arithmetic imm20/imm16 -> arithmetic imm4 2 bytes
|
1102 |
|
|
|
1103 |
|
|
Symbol- and reloc-reading infrastructure copied from elf-m10200.c. */
|
1104 |
|
|
|
1105 |
|
|
static bfd_boolean
|
1106 |
|
|
elf32_cr16_relax_section (bfd *abfd, asection *sec,
|
1107 |
|
|
struct bfd_link_info *link_info, bfd_boolean *again)
|
1108 |
|
|
{
|
1109 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
1110 |
|
|
Elf_Internal_Rela *internal_relocs;
|
1111 |
|
|
Elf_Internal_Rela *irel, *irelend;
|
1112 |
|
|
bfd_byte *contents = NULL;
|
1113 |
|
|
Elf_Internal_Sym *isymbuf = NULL;
|
1114 |
|
|
|
1115 |
|
|
/* Assume nothing changes. */
|
1116 |
|
|
*again = FALSE;
|
1117 |
|
|
|
1118 |
|
|
/* We don't have to do anything for a relocatable link, if
|
1119 |
|
|
this section does not have relocs, or if this is not a
|
1120 |
|
|
code section. */
|
1121 |
|
|
if (link_info->relocatable
|
1122 |
|
|
|| (sec->flags & SEC_RELOC) == 0
|
1123 |
|
|
|| sec->reloc_count == 0
|
1124 |
|
|
|| (sec->flags & SEC_CODE) == 0)
|
1125 |
|
|
return TRUE;
|
1126 |
|
|
|
1127 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
1128 |
|
|
|
1129 |
|
|
/* Get a copy of the native relocations. */
|
1130 |
|
|
internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
|
1131 |
|
|
link_info->keep_memory);
|
1132 |
|
|
if (internal_relocs == NULL)
|
1133 |
|
|
goto error_return;
|
1134 |
|
|
|
1135 |
|
|
/* Walk through them looking for relaxing opportunities. */
|
1136 |
|
|
irelend = internal_relocs + sec->reloc_count;
|
1137 |
|
|
for (irel = internal_relocs; irel < irelend; irel++)
|
1138 |
|
|
{
|
1139 |
|
|
bfd_vma symval;
|
1140 |
|
|
|
1141 |
|
|
/* If this isn't something that can be relaxed, then ignore
|
1142 |
|
|
this reloc. */
|
1143 |
|
|
if (ELF32_R_TYPE (irel->r_info) != (int) R_CR16_DISP16
|
1144 |
|
|
&& ELF32_R_TYPE (irel->r_info) != (int) R_CR16_DISP24
|
1145 |
|
|
&& ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM32
|
1146 |
|
|
&& ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM20
|
1147 |
|
|
&& ELF32_R_TYPE (irel->r_info) != (int) R_CR16_IMM16)
|
1148 |
|
|
continue;
|
1149 |
|
|
|
1150 |
|
|
/* Get the section contents if we haven't done so already. */
|
1151 |
|
|
if (contents == NULL)
|
1152 |
|
|
{
|
1153 |
|
|
/* Get cached copy if it exists. */
|
1154 |
|
|
if (elf_section_data (sec)->this_hdr.contents != NULL)
|
1155 |
|
|
contents = elf_section_data (sec)->this_hdr.contents;
|
1156 |
|
|
/* Go get them off disk. */
|
1157 |
|
|
else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
|
1158 |
|
|
goto error_return;
|
1159 |
|
|
}
|
1160 |
|
|
|
1161 |
|
|
/* Read this BFD's local symbols if we haven't done so already. */
|
1162 |
|
|
if (isymbuf == NULL && symtab_hdr->sh_info != 0)
|
1163 |
|
|
{
|
1164 |
|
|
isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
|
1165 |
|
|
if (isymbuf == NULL)
|
1166 |
|
|
isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
|
1167 |
|
|
symtab_hdr->sh_info, 0,
|
1168 |
|
|
NULL, NULL, NULL);
|
1169 |
|
|
if (isymbuf == NULL)
|
1170 |
|
|
goto error_return;
|
1171 |
|
|
}
|
1172 |
|
|
|
1173 |
|
|
/* Get the value of the symbol referred to by the reloc. */
|
1174 |
|
|
if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
|
1175 |
|
|
{
|
1176 |
|
|
/* A local symbol. */
|
1177 |
|
|
Elf_Internal_Sym *isym;
|
1178 |
|
|
asection *sym_sec;
|
1179 |
|
|
|
1180 |
|
|
isym = isymbuf + ELF32_R_SYM (irel->r_info);
|
1181 |
|
|
if (isym->st_shndx == SHN_UNDEF)
|
1182 |
|
|
sym_sec = bfd_und_section_ptr;
|
1183 |
|
|
else if (isym->st_shndx == SHN_ABS)
|
1184 |
|
|
sym_sec = bfd_abs_section_ptr;
|
1185 |
|
|
else if (isym->st_shndx == SHN_COMMON)
|
1186 |
|
|
sym_sec = bfd_com_section_ptr;
|
1187 |
|
|
else
|
1188 |
|
|
sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
1189 |
|
|
symval = (isym->st_value
|
1190 |
|
|
+ sym_sec->output_section->vma
|
1191 |
|
|
+ sym_sec->output_offset);
|
1192 |
|
|
}
|
1193 |
|
|
else
|
1194 |
|
|
{
|
1195 |
|
|
unsigned long indx;
|
1196 |
|
|
struct elf_link_hash_entry *h;
|
1197 |
|
|
|
1198 |
|
|
/* An external symbol. */
|
1199 |
|
|
indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
|
1200 |
|
|
h = elf_sym_hashes (abfd)[indx];
|
1201 |
|
|
BFD_ASSERT (h != NULL);
|
1202 |
|
|
|
1203 |
|
|
if (h->root.type != bfd_link_hash_defined
|
1204 |
|
|
&& h->root.type != bfd_link_hash_defweak)
|
1205 |
|
|
/* This appears to be a reference to an undefined
|
1206 |
|
|
symbol. Just ignore it--it will be caught by the
|
1207 |
|
|
regular reloc processing. */
|
1208 |
|
|
continue;
|
1209 |
|
|
|
1210 |
|
|
symval = (h->root.u.def.value
|
1211 |
|
|
+ h->root.u.def.section->output_section->vma
|
1212 |
|
|
+ h->root.u.def.section->output_offset);
|
1213 |
|
|
}
|
1214 |
|
|
|
1215 |
|
|
/* For simplicity of coding, we are going to modify the section
|
1216 |
|
|
contents, the section relocs, and the BFD symbol table. We
|
1217 |
|
|
must tell the rest of the code not to free up this
|
1218 |
|
|
information. It would be possible to instead create a table
|
1219 |
|
|
of changes which have to be made, as is done in coff-mips.c;
|
1220 |
|
|
that would be more work, but would require less memory when
|
1221 |
|
|
the linker is run. */
|
1222 |
|
|
|
1223 |
|
|
/* Try to turn a 24 branch/call into a 16bit relative
|
1224 |
|
|
branch/call. */
|
1225 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_DISP24)
|
1226 |
|
|
{
|
1227 |
|
|
bfd_vma value = symval;
|
1228 |
|
|
|
1229 |
|
|
/* Deal with pc-relative gunk. */
|
1230 |
|
|
value -= (sec->output_section->vma + sec->output_offset);
|
1231 |
|
|
value -= irel->r_offset;
|
1232 |
|
|
value += irel->r_addend;
|
1233 |
|
|
|
1234 |
|
|
/* See if the value will fit in 16 bits, note the high value is
|
1235 |
|
|
0xfffe + 2 as the target will be two bytes closer if we are
|
1236 |
|
|
able to relax. */
|
1237 |
|
|
if ((long) value < 0x10000 && (long) value > -0x10002)
|
1238 |
|
|
{
|
1239 |
|
|
unsigned int code;
|
1240 |
|
|
|
1241 |
|
|
/* Get the opcode. */
|
1242 |
|
|
code = (unsigned int) bfd_get_32 (abfd, contents + irel->r_offset);
|
1243 |
|
|
|
1244 |
|
|
/* Verify it's a 'bcond' and fix the opcode. */
|
1245 |
|
|
if ((code & 0xffff) == 0x0010)
|
1246 |
|
|
{
|
1247 |
|
|
bfd_put_16 (abfd, 0x1800 | ((0xf & (code >> 20)) << 4), contents + irel->r_offset);
|
1248 |
|
|
bfd_put_16 (abfd, value, contents + irel->r_offset + 2);
|
1249 |
|
|
}
|
1250 |
|
|
else
|
1251 |
|
|
continue;
|
1252 |
|
|
|
1253 |
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
1254 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
1255 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
1256 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
1257 |
|
|
|
1258 |
|
|
/* Fix the relocation's type. */
|
1259 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
1260 |
|
|
R_CR16_DISP16);
|
1261 |
|
|
|
1262 |
|
|
/* Delete two bytes of data. */
|
1263 |
|
|
if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
|
1264 |
|
|
irel->r_offset + 2, 2))
|
1265 |
|
|
goto error_return;
|
1266 |
|
|
|
1267 |
|
|
/* That will change things, so, we should relax again.
|
1268 |
|
|
Note that this is not required, and it may be slow. */
|
1269 |
|
|
*again = TRUE;
|
1270 |
|
|
}
|
1271 |
|
|
}
|
1272 |
|
|
|
1273 |
|
|
/* Try to turn a 16-bit pc-relative branch into an
|
1274 |
|
|
8-bit pc-relative branch. */
|
1275 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_DISP16)
|
1276 |
|
|
{
|
1277 |
|
|
bfd_vma value = symval;
|
1278 |
|
|
|
1279 |
|
|
/* Deal with pc-relative gunk. */
|
1280 |
|
|
value -= (sec->output_section->vma + sec->output_offset);
|
1281 |
|
|
value -= irel->r_offset;
|
1282 |
|
|
value += irel->r_addend;
|
1283 |
|
|
|
1284 |
|
|
/* See if the value will fit in 8 bits, note the high value is
|
1285 |
|
|
0xfc + 2 as the target will be two bytes closer if we are
|
1286 |
|
|
able to relax. */
|
1287 |
|
|
if ((long) value < 0xfe && (long) value > -0x100)
|
1288 |
|
|
{
|
1289 |
|
|
unsigned short code;
|
1290 |
|
|
|
1291 |
|
|
/* Get the opcode. */
|
1292 |
|
|
code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
|
1293 |
|
|
|
1294 |
|
|
/* Verify it's a 'bcond' opcode. */
|
1295 |
|
|
if ((code & 0xff00) == 0x1800)
|
1296 |
|
|
{
|
1297 |
|
|
bfd_put_8 (abfd, 0x1 | ((0xf & (code >> 4)) << 4), contents + irel->r_offset);
|
1298 |
|
|
bfd_put_8 (abfd, value, contents + irel->r_offset + 2);
|
1299 |
|
|
}
|
1300 |
|
|
else
|
1301 |
|
|
continue;
|
1302 |
|
|
|
1303 |
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
1304 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
1305 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
1306 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
1307 |
|
|
|
1308 |
|
|
/* Fix the relocation's type. */
|
1309 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
1310 |
|
|
R_CR16_DISP8);
|
1311 |
|
|
|
1312 |
|
|
/* Delete two bytes of data. */
|
1313 |
|
|
if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
|
1314 |
|
|
irel->r_offset + 2, 2))
|
1315 |
|
|
goto error_return;
|
1316 |
|
|
|
1317 |
|
|
/* That will change things, so, we should relax again.
|
1318 |
|
|
Note that this is not required, and it may be slow. */
|
1319 |
|
|
*again = TRUE;
|
1320 |
|
|
}
|
1321 |
|
|
}
|
1322 |
|
|
|
1323 |
|
|
/* Try to turn a 32bit immediate address into
|
1324 |
|
|
a 20/16bit immediate address. */
|
1325 |
|
|
if (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM32)
|
1326 |
|
|
{
|
1327 |
|
|
bfd_vma value = symval;
|
1328 |
|
|
unsigned short is_add_mov = 0;
|
1329 |
|
|
|
1330 |
|
|
/* See if the value will fit in 20 bits. */
|
1331 |
|
|
if ((long) value < 0xfffff && (long) value > 0)
|
1332 |
|
|
{
|
1333 |
|
|
unsigned short code;
|
1334 |
|
|
|
1335 |
|
|
/* Get the opcode. */
|
1336 |
|
|
code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
|
1337 |
|
|
|
1338 |
|
|
/* Verify it's a arithmetic ADDD or MOVD instruction.
|
1339 |
|
|
For ADDD and MOVD only, convert to IMM32 -> IMM20. */
|
1340 |
|
|
if (((code & 0xfff0) == 0x0070) || ((code & 0xfff0) == 0x0020))
|
1341 |
|
|
is_add_mov = 1;
|
1342 |
|
|
|
1343 |
|
|
if (is_add_mov)
|
1344 |
|
|
{
|
1345 |
|
|
/* Note that we've changed the relocs, section contents,
|
1346 |
|
|
etc. */
|
1347 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
1348 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
1349 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
1350 |
|
|
|
1351 |
|
|
/* Fix the opcode. */
|
1352 |
|
|
if ((code & 0xfff0) == 0x0070) /* For movd. */
|
1353 |
|
|
bfd_put_8 (abfd, 0x05, contents + irel->r_offset + 1);
|
1354 |
|
|
else /* code == 0x0020 for addd. */
|
1355 |
|
|
bfd_put_8 (abfd, 0x04, contents + irel->r_offset + 1);
|
1356 |
|
|
|
1357 |
|
|
bfd_put_8 (abfd, (code & 0xf) << 4, contents + irel->r_offset);
|
1358 |
|
|
|
1359 |
|
|
|
1360 |
|
|
/* Fix the relocation's type. */
|
1361 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
1362 |
|
|
R_CR16_IMM20);
|
1363 |
|
|
/* Delete two bytes of data. */
|
1364 |
|
|
if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
|
1365 |
|
|
irel->r_offset + 2, 2))
|
1366 |
|
|
goto error_return;
|
1367 |
|
|
|
1368 |
|
|
/* That will change things, so, we should relax again.
|
1369 |
|
|
Note that this is not required, and it may be slow. */
|
1370 |
|
|
*again = TRUE;
|
1371 |
|
|
}
|
1372 |
|
|
}
|
1373 |
|
|
/* See if the value will fit in 16 bits. */
|
1374 |
|
|
if ((!is_add_mov) && ((long) value < 0x7fff && (long) value > 0))
|
1375 |
|
|
{
|
1376 |
|
|
unsigned short code;
|
1377 |
|
|
|
1378 |
|
|
/* Get the opcode. */
|
1379 |
|
|
code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
|
1380 |
|
|
|
1381 |
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
1382 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
1383 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
1384 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
1385 |
|
|
|
1386 |
|
|
/* Fix the opcode. */
|
1387 |
|
|
if ((code & 0xf0) == 0x70) /* For movd. */
|
1388 |
|
|
bfd_put_8 (abfd, 0x54, contents + irel->r_offset + 1);
|
1389 |
|
|
else if ((code & 0xf0) == 0x20) /* For addd. */
|
1390 |
|
|
bfd_put_8 (abfd, 0x60, contents + irel->r_offset + 1);
|
1391 |
|
|
else if ((code & 0xf0) == 0x90) /* For cmpd. */
|
1392 |
|
|
bfd_put_8 (abfd, 0x56, contents + irel->r_offset + 1);
|
1393 |
|
|
else
|
1394 |
|
|
continue;
|
1395 |
|
|
|
1396 |
|
|
bfd_put_8 (abfd, 0xb0 | (code & 0xf), contents + irel->r_offset);
|
1397 |
|
|
|
1398 |
|
|
/* Fix the relocation's type. */
|
1399 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
1400 |
|
|
R_CR16_IMM16);
|
1401 |
|
|
|
1402 |
|
|
/* Delete two bytes of data. */
|
1403 |
|
|
if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
|
1404 |
|
|
irel->r_offset + 2, 2))
|
1405 |
|
|
goto error_return;
|
1406 |
|
|
|
1407 |
|
|
/* That will change things, so, we should relax again.
|
1408 |
|
|
Note that this is not required, and it may be slow. */
|
1409 |
|
|
*again = TRUE;
|
1410 |
|
|
}
|
1411 |
|
|
}
|
1412 |
|
|
|
1413 |
|
|
/* Try to turn a 20/16bit immediate address into
|
1414 |
|
|
a 4bit immediate address. */
|
1415 |
|
|
if ((ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM20)
|
1416 |
|
|
|| (ELF32_R_TYPE (irel->r_info) == (int) R_CR16_IMM16))
|
1417 |
|
|
{
|
1418 |
|
|
bfd_vma value = symval;
|
1419 |
|
|
|
1420 |
|
|
/* See if the value will fit in 4 bits. */
|
1421 |
|
|
if ((long) value < 0xf && (long) value > 0)
|
1422 |
|
|
{
|
1423 |
|
|
unsigned short code;
|
1424 |
|
|
|
1425 |
|
|
/* Get the opcode. */
|
1426 |
|
|
code = (unsigned short) bfd_get_16 (abfd, contents + irel->r_offset);
|
1427 |
|
|
|
1428 |
|
|
/* Note that we've changed the relocs, section contents, etc. */
|
1429 |
|
|
elf_section_data (sec)->relocs = internal_relocs;
|
1430 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
1431 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
1432 |
|
|
|
1433 |
|
|
/* Fix the opcode. */
|
1434 |
|
|
if (((code & 0x0f00) == 0x0400) || ((code & 0x0f00) == 0x0500))
|
1435 |
|
|
{
|
1436 |
|
|
if ((code & 0x0f00) == 0x0400) /* For movd imm20. */
|
1437 |
|
|
bfd_put_8 (abfd, 0x60, contents + irel->r_offset);
|
1438 |
|
|
else /* For addd imm20. */
|
1439 |
|
|
bfd_put_8 (abfd, 0x54, contents + irel->r_offset);
|
1440 |
|
|
bfd_put_8 (abfd, (code & 0xf0) >> 4, contents + irel->r_offset + 1);
|
1441 |
|
|
}
|
1442 |
|
|
else
|
1443 |
|
|
{
|
1444 |
|
|
if ((code & 0xfff0) == 0x56b0) /* For cmpd imm16. */
|
1445 |
|
|
bfd_put_8 (abfd, 0x56, contents + irel->r_offset);
|
1446 |
|
|
else if ((code & 0xfff0) == 0x54b0) /* For movd imm16. */
|
1447 |
|
|
bfd_put_8 (abfd, 0x54, contents + irel->r_offset);
|
1448 |
|
|
else if ((code & 0xfff0) == 0x58b0) /* For movb imm16. */
|
1449 |
|
|
bfd_put_8 (abfd, 0x58, contents + irel->r_offset);
|
1450 |
|
|
else if ((code & 0xfff0) == 0x5Ab0) /* For movw imm16. */
|
1451 |
|
|
bfd_put_8 (abfd, 0x5A, contents + irel->r_offset);
|
1452 |
|
|
else if ((code & 0xfff0) == 0x60b0) /* For addd imm16. */
|
1453 |
|
|
bfd_put_8 (abfd, 0x60, contents + irel->r_offset);
|
1454 |
|
|
else if ((code & 0xfff0) == 0x30b0) /* For addb imm16. */
|
1455 |
|
|
bfd_put_8 (abfd, 0x30, contents + irel->r_offset);
|
1456 |
|
|
else if ((code & 0xfff0) == 0x2Cb0) /* For addub imm16. */
|
1457 |
|
|
bfd_put_8 (abfd, 0x2C, contents + irel->r_offset);
|
1458 |
|
|
else if ((code & 0xfff0) == 0x32b0) /* For adduw imm16. */
|
1459 |
|
|
bfd_put_8 (abfd, 0x32, contents + irel->r_offset);
|
1460 |
|
|
else if ((code & 0xfff0) == 0x38b0) /* For subb imm16. */
|
1461 |
|
|
bfd_put_8 (abfd, 0x38, contents + irel->r_offset);
|
1462 |
|
|
else if ((code & 0xfff0) == 0x3Ab0) /* For subw imm16. */
|
1463 |
|
|
bfd_put_8 (abfd, 0x3A, contents + irel->r_offset);
|
1464 |
|
|
else if ((code & 0xfff0) == 0x50b0) /* For cmpb imm16. */
|
1465 |
|
|
bfd_put_8 (abfd, 0x50, contents + irel->r_offset);
|
1466 |
|
|
else if ((code & 0xfff0) == 0x52b0) /* For cmpw imm16. */
|
1467 |
|
|
bfd_put_8 (abfd, 0x52, contents + irel->r_offset);
|
1468 |
|
|
else
|
1469 |
|
|
continue;
|
1470 |
|
|
|
1471 |
|
|
bfd_put_8 (abfd, (code & 0xf), contents + irel->r_offset + 1);
|
1472 |
|
|
}
|
1473 |
|
|
|
1474 |
|
|
/* Fix the relocation's type. */
|
1475 |
|
|
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
|
1476 |
|
|
R_CR16_IMM4);
|
1477 |
|
|
|
1478 |
|
|
/* Delete two bytes of data. */
|
1479 |
|
|
if (!elf32_cr16_relax_delete_bytes (link_info, abfd, sec,
|
1480 |
|
|
irel->r_offset + 2, 2))
|
1481 |
|
|
goto error_return;
|
1482 |
|
|
|
1483 |
|
|
/* That will change things, so, we should relax again.
|
1484 |
|
|
Note that this is not required, and it may be slow. */
|
1485 |
|
|
*again = TRUE;
|
1486 |
|
|
}
|
1487 |
|
|
}
|
1488 |
|
|
}
|
1489 |
|
|
|
1490 |
|
|
if (isymbuf != NULL
|
1491 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
1492 |
|
|
{
|
1493 |
|
|
if (! link_info->keep_memory)
|
1494 |
|
|
free (isymbuf);
|
1495 |
|
|
else
|
1496 |
|
|
/* Cache the symbols for elf_link_input_bfd. */
|
1497 |
|
|
symtab_hdr->contents = (unsigned char *) isymbuf;
|
1498 |
|
|
}
|
1499 |
|
|
|
1500 |
|
|
if (contents != NULL
|
1501 |
|
|
&& elf_section_data (sec)->this_hdr.contents != contents)
|
1502 |
|
|
{
|
1503 |
|
|
if (! link_info->keep_memory)
|
1504 |
|
|
free (contents);
|
1505 |
|
|
else
|
1506 |
|
|
/* Cache the section contents for elf_link_input_bfd. */
|
1507 |
|
|
elf_section_data (sec)->this_hdr.contents = contents;
|
1508 |
|
|
}
|
1509 |
|
|
|
1510 |
|
|
if (internal_relocs != NULL
|
1511 |
|
|
&& elf_section_data (sec)->relocs != internal_relocs)
|
1512 |
|
|
free (internal_relocs);
|
1513 |
|
|
|
1514 |
|
|
return TRUE;
|
1515 |
|
|
|
1516 |
|
|
error_return:
|
1517 |
|
|
if (isymbuf != NULL
|
1518 |
|
|
&& symtab_hdr->contents != (unsigned char *) isymbuf)
|
1519 |
|
|
free (isymbuf);
|
1520 |
|
|
if (contents != NULL
|
1521 |
|
|
&& elf_section_data (sec)->this_hdr.contents != contents)
|
1522 |
|
|
free (contents);
|
1523 |
|
|
if (internal_relocs != NULL
|
1524 |
|
|
&& elf_section_data (sec)->relocs != internal_relocs)
|
1525 |
|
|
free (internal_relocs);
|
1526 |
|
|
|
1527 |
|
|
return FALSE;
|
1528 |
|
|
}
|
1529 |
|
|
|
1530 |
|
|
static asection *
|
1531 |
|
|
elf32_cr16_gc_mark_hook (asection *sec,
|
1532 |
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
1533 |
|
|
Elf_Internal_Rela *rel ATTRIBUTE_UNUSED,
|
1534 |
|
|
struct elf_link_hash_entry *h,
|
1535 |
|
|
Elf_Internal_Sym *sym)
|
1536 |
|
|
{
|
1537 |
|
|
if (h == NULL)
|
1538 |
|
|
return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
|
1539 |
|
|
|
1540 |
|
|
switch (h->root.type)
|
1541 |
|
|
{
|
1542 |
|
|
case bfd_link_hash_defined:
|
1543 |
|
|
case bfd_link_hash_defweak:
|
1544 |
|
|
return h->root.u.def.section;
|
1545 |
|
|
|
1546 |
|
|
case bfd_link_hash_common:
|
1547 |
|
|
return h->root.u.c.p->section;
|
1548 |
|
|
|
1549 |
|
|
default:
|
1550 |
|
|
return NULL;
|
1551 |
|
|
}
|
1552 |
|
|
}
|
1553 |
|
|
|
1554 |
|
|
/* Update the got entry reference counts for the section being removed. */
|
1555 |
|
|
|
1556 |
|
|
static bfd_boolean
|
1557 |
|
|
elf32_cr16_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
|
1558 |
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
1559 |
|
|
asection *sec ATTRIBUTE_UNUSED,
|
1560 |
|
|
const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
|
1561 |
|
|
{
|
1562 |
|
|
/* We don't support garbage collection of GOT and PLT relocs yet. */
|
1563 |
|
|
return TRUE;
|
1564 |
|
|
}
|
1565 |
|
|
|
1566 |
|
|
/* Definitions for setting CR16 target vector. */
|
1567 |
|
|
#define TARGET_LITTLE_SYM bfd_elf32_cr16_vec
|
1568 |
|
|
#define TARGET_LITTLE_NAME "elf32-cr16"
|
1569 |
|
|
#define ELF_ARCH bfd_arch_cr16
|
1570 |
|
|
#define ELF_MACHINE_CODE EM_CR16
|
1571 |
|
|
#define ELF_MAXPAGESIZE 0x1
|
1572 |
|
|
#define elf_symbol_leading_char '_'
|
1573 |
|
|
|
1574 |
|
|
#define bfd_elf32_bfd_reloc_type_lookup elf_cr16_reloc_type_lookup
|
1575 |
|
|
#define bfd_elf32_bfd_reloc_name_lookup elf_cr16_reloc_name_lookup
|
1576 |
|
|
#define elf_info_to_howto elf_cr16_info_to_howto
|
1577 |
|
|
#define elf_info_to_howto_rel 0
|
1578 |
|
|
#define elf_backend_relocate_section elf32_cr16_relocate_section
|
1579 |
|
|
#define bfd_elf32_bfd_relax_section elf32_cr16_relax_section
|
1580 |
|
|
#define bfd_elf32_bfd_get_relocated_section_contents \
|
1581 |
|
|
elf32_cr16_get_relocated_section_contents
|
1582 |
|
|
#define elf_backend_gc_mark_hook elf32_cr16_gc_mark_hook
|
1583 |
|
|
#define elf_backend_gc_sweep_hook elf32_cr16_gc_sweep_hook
|
1584 |
|
|
#define elf_backend_can_gc_sections 1
|
1585 |
|
|
#define elf_backend_rela_normal 1
|
1586 |
|
|
|
1587 |
|
|
#include "elf32-target.h"
|