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- /* TILEPro-specific support for 32-bit ELF.
- Copyright (C) 2011-2022 Free Software Foundation, Inc.
- This file is part of BFD, the Binary File Descriptor library.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
- MA 02110-1301, USA. */
- #include "sysdep.h"
- #include "bfd.h"
- #include "libbfd.h"
- #include "elf-bfd.h"
- #include "elf/tilepro.h"
- #include "opcode/tilepro.h"
- #include "libiberty.h"
- #include "elf32-tilepro.h"
- #define TILEPRO_BYTES_PER_WORD 4
- static reloc_howto_type tilepro_elf_howto_table [] =
- {
- /* This reloc does nothing. */
- HOWTO (R_TILEPRO_NONE, /* type */
- 0, /* rightshift */
- 3, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_NONE", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- /* A 32 bit absolute relocation. */
- HOWTO (R_TILEPRO_32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_32", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- /* A 16 bit absolute relocation. */
- HOWTO (R_TILEPRO_16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- /* An 8 bit absolute relocation. */
- HOWTO (R_TILEPRO_8, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_unsigned, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_8", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xff, /* dst_mask */
- false), /* pcrel_offset */
- /* A 32 bit pc-relative relocation. */
- HOWTO (R_TILEPRO_32_PCREL,/* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_32_PCREL", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- true), /* pcrel_offset */
- /* A 16 bit pc-relative relocation. */
- HOWTO (R_TILEPRO_16_PCREL,/* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_16_PCREL", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- true), /* pcrel_offset */
- /* An 8 bit pc-relative relocation. */
- HOWTO (R_TILEPRO_8_PCREL, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_8_PCREL",/* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xff, /* dst_mask */
- true), /* pcrel_offset */
- /* A 16 bit relocation without overflow. */
- HOWTO (R_TILEPRO_LO16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont,/* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_LO16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- /* The high order 16 bits of an address. */
- HOWTO (R_TILEPRO_HI16, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_HI16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- /* The high order 16 bits of an address, plus 1 if the contents of
- the low 16 bits, treated as a signed number, is negative. */
- HOWTO (R_TILEPRO_HA16, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_HA16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_TILEPRO_COPY, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_COPY", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_TILEPRO_GLOB_DAT, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_GLOB_DAT", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_TILEPRO_JMP_SLOT, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_JMP_SLOT", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_TILEPRO_RELATIVE, /* type */
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_RELATIVE", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_TILEPRO_BROFF_X1, /* type */
- TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 17, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_BROFF_X1", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- -1, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_TILEPRO_JOFFLONG_X1, /* type */
- TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 29, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed,/* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_JOFFLONG_X1", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- -1, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_TILEPRO_JOFFLONG_X1_PLT, /* type */
- TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 29, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed,/* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_JOFFLONG_X1_PLT", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- -1, /* dst_mask */
- true), /* pcrel_offset */
- #define TILEPRO_IMM_HOWTO(name, size, bitsize) \
- HOWTO (name, 0, size, bitsize, false, 0, \
- complain_overflow_signed, bfd_elf_generic_reloc, \
- #name, false, 0, -1, false)
- #define TILEPRO_UIMM_HOWTO(name, size, bitsize) \
- HOWTO (name, 0, size, bitsize, false, 0, \
- complain_overflow_unsigned, bfd_elf_generic_reloc, \
- #name, false, 0, -1, false)
- TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X0, 0, 8),
- TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y0, 0, 8),
- TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X1, 0, 8),
- TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y1, 0, 8),
- TILEPRO_UIMM_HOWTO(R_TILEPRO_MT_IMM15_X1, 1, 15),
- TILEPRO_UIMM_HOWTO(R_TILEPRO_MF_IMM15_X1, 1, 15),
- TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X0, 1, 16),
- TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X1, 1, 16),
- #define TILEPRO_IMM16_HOWTO(name, rshift) \
- HOWTO (name, rshift, 1, 16, false, 0, \
- complain_overflow_dont, bfd_elf_generic_reloc, \
- #name, false, 0, 0xffff, false)
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_LO, 0),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_LO, 0),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_HI, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_HI, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_HA, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_HA, 16),
- /* PC-relative offsets. */
- HOWTO (R_TILEPRO_IMM16_X0_PCREL, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_IMM16_X0_PCREL",/* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- -1, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_TILEPRO_IMM16_X1_PCREL, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_IMM16_X1_PCREL",/* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- -1, /* dst_mask */
- true), /* pcrel_offset */
- #define TILEPRO_IMM16_HOWTO_PCREL(name, rshift) \
- HOWTO (name, rshift, 1, 16, true, 0, \
- complain_overflow_dont, bfd_elf_generic_reloc, \
- #name, false, 0, 0xffff, true)
- TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_LO_PCREL, 0),
- TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_LO_PCREL, 0),
- TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_HI_PCREL, 16),
- TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_HI_PCREL, 16),
- TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X0_HA_PCREL, 16),
- TILEPRO_IMM16_HOWTO_PCREL (R_TILEPRO_IMM16_X1_HA_PCREL, 16),
- /* Byte offset into GOT for a particular symbol. */
- TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X0_GOT, 1, 16),
- TILEPRO_IMM_HOWTO(R_TILEPRO_IMM16_X1_GOT, 1, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_LO, 0),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_LO, 0),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_HI, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_HI, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_GOT_HA, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_GOT_HA, 16),
- TILEPRO_UIMM_HOWTO(R_TILEPRO_MMSTART_X0, 0, 5),
- TILEPRO_UIMM_HOWTO(R_TILEPRO_MMEND_X0, 0, 5),
- TILEPRO_UIMM_HOWTO(R_TILEPRO_MMSTART_X1, 0, 5),
- TILEPRO_UIMM_HOWTO(R_TILEPRO_MMEND_X1, 0, 5),
- TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_X0, 0, 5),
- TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_X1, 0, 5),
- TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_Y0, 0, 5),
- TILEPRO_UIMM_HOWTO(R_TILEPRO_SHAMT_Y1, 0, 5),
- TILEPRO_IMM_HOWTO(R_TILEPRO_DEST_IMM8_X1, 0, 8),
- /* These relocs are currently not defined. */
- EMPTY_HOWTO (56),
- EMPTY_HOWTO (57),
- EMPTY_HOWTO (58),
- EMPTY_HOWTO (59),
- HOWTO (R_TILEPRO_TLS_GD_CALL, /* type */
- TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 29, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed,/* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_TLS_GD_CALL", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- -1, /* dst_mask */
- true), /* pcrel_offset */
- TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X0_TLS_GD_ADD, 0, 8),
- TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_X1_TLS_GD_ADD, 0, 8),
- TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y0_TLS_GD_ADD, 0, 8),
- TILEPRO_IMM_HOWTO(R_TILEPRO_IMM8_Y1_TLS_GD_ADD, 0, 8),
- TILEPRO_IMM_HOWTO(R_TILEPRO_TLS_IE_LOAD, 0, 8),
- /* Offsets into the GOT of TLS Descriptors. */
- HOWTO (R_TILEPRO_IMM16_X0_TLS_GD,/* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_IMM16_X0_TLS_GD",/* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_TILEPRO_IMM16_X1_TLS_GD,/* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_IMM16_X1_TLS_GD",/* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_LO, 0),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_LO, 0),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_HI, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_HI, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_GD_HA, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_GD_HA, 16),
- /* Offsets into the GOT of TLS Descriptors. */
- HOWTO (R_TILEPRO_IMM16_X0_TLS_IE,/* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_IMM16_X0_TLS_IE",/* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- -1, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_TILEPRO_IMM16_X1_TLS_IE,/* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_IMM16_X1_TLS_IE",/* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- -1, /* dst_mask */
- true), /* pcrel_offset */
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_LO, 0),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_LO, 0),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_HI, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_HI, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_IE_HA, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_IE_HA, 16),
- /* These are common with the Solaris TLS implementation. */
- HOWTO(R_TILEPRO_TLS_DTPMOD32, 0, 0, 0, false, 0, complain_overflow_dont,
- bfd_elf_generic_reloc, "R_TILEPRO_TLS_DTPMOD32",
- false, 0, 0, true),
- HOWTO(R_TILEPRO_TLS_DTPOFF32, 0, 2, 32, false, 0, complain_overflow_bitfield,
- bfd_elf_generic_reloc, "R_TILEPRO_TLS_DTPOFF32",
- false, 0, 0xFFFFFFFF, true),
- HOWTO(R_TILEPRO_TLS_TPOFF32, 0, 0, 0, false, 0, complain_overflow_dont,
- bfd_elf_generic_reloc, "R_TILEPRO_TLS_TPOFF32",
- false, 0, 0, true),
- HOWTO (R_TILEPRO_IMM16_X0_TLS_LE,/* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_IMM16_X0_TLS_LE",/* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- -1, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_TILEPRO_IMM16_X1_TLS_LE,/* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_TILEPRO_IMM16_X1_TLS_LE",/* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- -1, /* dst_mask */
- true), /* pcrel_offset */
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_LO, 0),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_LO, 0),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_HI, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_HI, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X0_TLS_LE_HA, 16),
- TILEPRO_IMM16_HOWTO (R_TILEPRO_IMM16_X1_TLS_LE_HA, 16),
- };
- static reloc_howto_type tilepro_elf_howto_table2 [] =
- {
- /* GNU extension to record C++ vtable hierarchy */
- HOWTO (R_TILEPRO_GNU_VTINHERIT, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- NULL, /* special_function */
- "R_TILEPRO_GNU_VTINHERIT", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- /* GNU extension to record C++ vtable member usage */
- HOWTO (R_TILEPRO_GNU_VTENTRY, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- _bfd_elf_rel_vtable_reloc_fn, /* special_function */
- "R_TILEPRO_GNU_VTENTRY", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- };
- /* Map BFD reloc types to TILEPRO ELF reloc types. */
- typedef struct tilepro_reloc_map
- {
- bfd_reloc_code_real_type bfd_reloc_val;
- unsigned int tilepro_reloc_val;
- reloc_howto_type * table;
- } reloc_map;
- static const reloc_map tilepro_reloc_map [] =
- {
- #define TH_REMAP(bfd, tilepro) \
- { bfd, tilepro, tilepro_elf_howto_table },
- /* Standard relocations. */
- TH_REMAP (BFD_RELOC_NONE, R_TILEPRO_NONE)
- TH_REMAP (BFD_RELOC_32, R_TILEPRO_32)
- TH_REMAP (BFD_RELOC_16, R_TILEPRO_16)
- TH_REMAP (BFD_RELOC_8, R_TILEPRO_8)
- TH_REMAP (BFD_RELOC_32_PCREL, R_TILEPRO_32_PCREL)
- TH_REMAP (BFD_RELOC_16_PCREL, R_TILEPRO_16_PCREL)
- TH_REMAP (BFD_RELOC_8_PCREL, R_TILEPRO_8_PCREL)
- TH_REMAP (BFD_RELOC_LO16, R_TILEPRO_LO16)
- TH_REMAP (BFD_RELOC_HI16, R_TILEPRO_HI16)
- TH_REMAP (BFD_RELOC_HI16_S, R_TILEPRO_HA16)
- /* Custom relocations. */
- TH_REMAP (BFD_RELOC_TILEPRO_COPY, R_TILEPRO_COPY)
- TH_REMAP (BFD_RELOC_TILEPRO_GLOB_DAT, R_TILEPRO_GLOB_DAT)
- TH_REMAP (BFD_RELOC_TILEPRO_JMP_SLOT, R_TILEPRO_JMP_SLOT)
- TH_REMAP (BFD_RELOC_TILEPRO_RELATIVE, R_TILEPRO_RELATIVE)
- TH_REMAP (BFD_RELOC_TILEPRO_BROFF_X1, R_TILEPRO_BROFF_X1)
- TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1, R_TILEPRO_JOFFLONG_X1)
- TH_REMAP (BFD_RELOC_TILEPRO_JOFFLONG_X1_PLT, R_TILEPRO_JOFFLONG_X1_PLT)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0, R_TILEPRO_IMM8_X0)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0, R_TILEPRO_IMM8_Y0)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1, R_TILEPRO_IMM8_X1)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1, R_TILEPRO_IMM8_Y1)
- TH_REMAP (BFD_RELOC_TILEPRO_DEST_IMM8_X1, R_TILEPRO_DEST_IMM8_X1)
- TH_REMAP (BFD_RELOC_TILEPRO_MT_IMM15_X1, R_TILEPRO_MT_IMM15_X1)
- TH_REMAP (BFD_RELOC_TILEPRO_MF_IMM15_X1, R_TILEPRO_MF_IMM15_X1)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0, R_TILEPRO_IMM16_X0)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1, R_TILEPRO_IMM16_X1)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO, R_TILEPRO_IMM16_X0_LO)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO, R_TILEPRO_IMM16_X1_LO)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI, R_TILEPRO_IMM16_X0_HI)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI, R_TILEPRO_IMM16_X1_HI)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA, R_TILEPRO_IMM16_X0_HA)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA, R_TILEPRO_IMM16_X1_HA)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_PCREL, R_TILEPRO_IMM16_X0_PCREL)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_PCREL, R_TILEPRO_IMM16_X1_PCREL)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_LO_PCREL, R_TILEPRO_IMM16_X0_LO_PCREL)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_LO_PCREL, R_TILEPRO_IMM16_X1_LO_PCREL)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HI_PCREL, R_TILEPRO_IMM16_X0_HI_PCREL)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HI_PCREL, R_TILEPRO_IMM16_X1_HI_PCREL)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_HA_PCREL, R_TILEPRO_IMM16_X0_HA_PCREL)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_HA_PCREL, R_TILEPRO_IMM16_X1_HA_PCREL)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT, R_TILEPRO_IMM16_X0_GOT)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT, R_TILEPRO_IMM16_X1_GOT)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_LO, R_TILEPRO_IMM16_X0_GOT_LO)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_LO, R_TILEPRO_IMM16_X1_GOT_LO)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HI, R_TILEPRO_IMM16_X0_GOT_HI)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HI, R_TILEPRO_IMM16_X1_GOT_HI)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_GOT_HA, R_TILEPRO_IMM16_X0_GOT_HA)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_GOT_HA, R_TILEPRO_IMM16_X1_GOT_HA)
- TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X0, R_TILEPRO_MMSTART_X0)
- TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X0, R_TILEPRO_MMEND_X0)
- TH_REMAP (BFD_RELOC_TILEPRO_MMSTART_X1, R_TILEPRO_MMSTART_X1)
- TH_REMAP (BFD_RELOC_TILEPRO_MMEND_X1, R_TILEPRO_MMEND_X1)
- TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X0, R_TILEPRO_SHAMT_X0)
- TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_X1, R_TILEPRO_SHAMT_X1)
- TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y0, R_TILEPRO_SHAMT_Y0)
- TH_REMAP (BFD_RELOC_TILEPRO_SHAMT_Y1, R_TILEPRO_SHAMT_Y1)
- TH_REMAP (BFD_RELOC_TILEPRO_TLS_GD_CALL, R_TILEPRO_TLS_GD_CALL)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X0_TLS_GD_ADD, R_TILEPRO_IMM8_X0_TLS_GD_ADD)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM8_X1_TLS_GD_ADD, R_TILEPRO_IMM8_X1_TLS_GD_ADD)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y0_TLS_GD_ADD, R_TILEPRO_IMM8_Y0_TLS_GD_ADD)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM8_Y1_TLS_GD_ADD, R_TILEPRO_IMM8_Y1_TLS_GD_ADD)
- TH_REMAP (BFD_RELOC_TILEPRO_TLS_IE_LOAD, R_TILEPRO_TLS_IE_LOAD)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD, R_TILEPRO_IMM16_X0_TLS_GD)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD, R_TILEPRO_IMM16_X1_TLS_GD)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_LO, R_TILEPRO_IMM16_X0_TLS_GD_LO)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_LO, R_TILEPRO_IMM16_X1_TLS_GD_LO)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HI, R_TILEPRO_IMM16_X0_TLS_GD_HI)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HI, R_TILEPRO_IMM16_X1_TLS_GD_HI)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HA, R_TILEPRO_IMM16_X0_TLS_GD_HA)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HA, R_TILEPRO_IMM16_X1_TLS_GD_HA)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE, R_TILEPRO_IMM16_X0_TLS_IE)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE, R_TILEPRO_IMM16_X1_TLS_IE)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_LO, R_TILEPRO_IMM16_X0_TLS_IE_LO)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_LO, R_TILEPRO_IMM16_X1_TLS_IE_LO)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HI, R_TILEPRO_IMM16_X0_TLS_IE_HI)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HI, R_TILEPRO_IMM16_X1_TLS_IE_HI)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HA, R_TILEPRO_IMM16_X0_TLS_IE_HA)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HA, R_TILEPRO_IMM16_X1_TLS_IE_HA)
- TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPMOD32, R_TILEPRO_TLS_DTPMOD32)
- TH_REMAP (BFD_RELOC_TILEPRO_TLS_DTPOFF32, R_TILEPRO_TLS_DTPOFF32)
- TH_REMAP (BFD_RELOC_TILEPRO_TLS_TPOFF32, R_TILEPRO_TLS_TPOFF32)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE, R_TILEPRO_IMM16_X0_TLS_LE)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE, R_TILEPRO_IMM16_X1_TLS_LE)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_LO, R_TILEPRO_IMM16_X0_TLS_LE_LO)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_LO, R_TILEPRO_IMM16_X1_TLS_LE_LO)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HI, R_TILEPRO_IMM16_X0_TLS_LE_HI)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HI, R_TILEPRO_IMM16_X1_TLS_LE_HI)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HA, R_TILEPRO_IMM16_X0_TLS_LE_HA)
- TH_REMAP (BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HA, R_TILEPRO_IMM16_X1_TLS_LE_HA)
- #undef TH_REMAP
- { BFD_RELOC_VTABLE_INHERIT, R_TILEPRO_GNU_VTINHERIT, tilepro_elf_howto_table2 },
- { BFD_RELOC_VTABLE_ENTRY, R_TILEPRO_GNU_VTENTRY, tilepro_elf_howto_table2 },
- };
- /* TILEPRO ELF linker hash entry. */
- struct tilepro_elf_link_hash_entry
- {
- struct elf_link_hash_entry elf;
- #define GOT_UNKNOWN 0
- #define GOT_NORMAL 1
- #define GOT_TLS_GD 2
- #define GOT_TLS_IE 4
- unsigned char tls_type;
- };
- #define tilepro_elf_hash_entry(ent) \
- ((struct tilepro_elf_link_hash_entry *)(ent))
- struct _bfd_tilepro_elf_obj_tdata
- {
- struct elf_obj_tdata root;
- /* tls_type for each local got entry. */
- char *local_got_tls_type;
- };
- #define _bfd_tilepro_elf_tdata(abfd) \
- ((struct _bfd_tilepro_elf_obj_tdata *) (abfd)->tdata.any)
- #define _bfd_tilepro_elf_local_got_tls_type(abfd) \
- (_bfd_tilepro_elf_tdata (abfd)->local_got_tls_type)
- #define is_tilepro_elf(bfd) \
- (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
- && elf_tdata (bfd) != NULL \
- && elf_object_id (bfd) == TILEPRO_ELF_DATA)
- /* Allocate TILEPro ELF private object data. */
- static bool
- tilepro_elf_mkobject (bfd *abfd)
- {
- return bfd_elf_allocate_object (abfd,
- sizeof (struct _bfd_tilepro_elf_obj_tdata),
- TILEPRO_ELF_DATA);
- }
- #include "elf/common.h"
- #include "elf/internal.h"
- /* Get the Tilepro ELF linker hash table from a link_info structure. */
- #define tilepro_elf_hash_table(p) \
- ((is_elf_hash_table ((p)->hash) \
- && elf_hash_table_id (elf_hash_table (p)) == TILEPRO_ELF_DATA) \
- ? (struct elf_link_hash_table *) (p)->hash : NULL)
- static reloc_howto_type *
- tilepro_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
- bfd_reloc_code_real_type code)
- {
- unsigned int i;
- for (i = ARRAY_SIZE (tilepro_reloc_map); i--;)
- {
- const reloc_map * entry;
- entry = tilepro_reloc_map + i;
- if (entry->bfd_reloc_val == code)
- return entry->table + (entry->tilepro_reloc_val
- - entry->table[0].type);
- }
- return NULL;
- }
- static reloc_howto_type *
- tilepro_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- const char *r_name)
- {
- unsigned int i;
- for (i = 0;
- i < (sizeof (tilepro_elf_howto_table)
- / sizeof (tilepro_elf_howto_table[0]));
- i++)
- if (tilepro_elf_howto_table[i].name != NULL
- && strcasecmp (tilepro_elf_howto_table[i].name, r_name) == 0)
- return &tilepro_elf_howto_table[i];
- return NULL;
- }
- /* Set the howto pointer for an TILEPro ELF reloc. */
- static bool
- tilepro_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED,
- arelent * cache_ptr,
- Elf_Internal_Rela * dst)
- {
- unsigned int r_type = ELF32_R_TYPE (dst->r_info);
- if (r_type <= (unsigned int) R_TILEPRO_IMM16_X1_TLS_LE_HA)
- cache_ptr->howto = &tilepro_elf_howto_table [r_type];
- else if (r_type - R_TILEPRO_GNU_VTINHERIT
- <= ((unsigned int) R_TILEPRO_GNU_VTENTRY
- - (unsigned int) R_TILEPRO_GNU_VTINHERIT))
- cache_ptr->howto
- = &tilepro_elf_howto_table2 [r_type - R_TILEPRO_GNU_VTINHERIT];
- else
- {
- /* xgettext:c-format */
- _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
- abfd, r_type);
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- return true;
- }
- typedef tilepro_bundle_bits (*tilepro_create_func)(int);
- static const tilepro_create_func reloc_to_create_func[] =
- {
- /* The first fourteen relocation types don't correspond to operands */
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- /* The remaining relocations are used for immediate operands */
- create_BrOff_X1,
- create_JOffLong_X1,
- create_JOffLong_X1,
- create_Imm8_X0,
- create_Imm8_Y0,
- create_Imm8_X1,
- create_Imm8_Y1,
- create_MT_Imm15_X1,
- create_MF_Imm15_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_MMStart_X0,
- create_MMEnd_X0,
- create_MMStart_X1,
- create_MMEnd_X1,
- create_ShAmt_X0,
- create_ShAmt_X1,
- create_ShAmt_Y0,
- create_ShAmt_Y1,
- create_Dest_Imm8_X1,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- NULL,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- NULL,
- NULL,
- NULL,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- create_Imm16_X0,
- create_Imm16_X1,
- };
- #define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0])))
- /* Support for core dump NOTE sections. */
- static bool
- tilepro_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
- {
- int offset;
- size_t size;
- if (note->descsz != TILEPRO_PRSTATUS_SIZEOF)
- return false;
- /* pr_cursig */
- elf_tdata (abfd)->core->signal =
- bfd_get_16 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_CURSIG);
- /* pr_pid */
- elf_tdata (abfd)->core->pid =
- bfd_get_32 (abfd, note->descdata + TILEPRO_PRSTATUS_OFFSET_PR_PID);
- /* pr_reg */
- offset = TILEPRO_PRSTATUS_OFFSET_PR_REG;
- size = TILEPRO_GREGSET_T_SIZE;
- /* Make a ".reg/999" section. */
- return _bfd_elfcore_make_pseudosection (abfd, ".reg",
- size, note->descpos + offset);
- }
- static bool
- tilepro_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
- {
- if (note->descsz != TILEPRO_PRPSINFO_SIZEOF)
- return false;
- elf_tdata (abfd)->core->program
- = _bfd_elfcore_strndup (abfd,
- note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_FNAME,
- 16);
- elf_tdata (abfd)->core->command
- = _bfd_elfcore_strndup (abfd,
- note->descdata + TILEPRO_PRPSINFO_OFFSET_PR_PSARGS,
- ELF_PR_PSARGS_SIZE);
- /* Note that for some reason, a spurious space is tacked
- onto the end of the args in some (at least one anyway)
- implementations, so strip it off if it exists. */
- {
- char *command = elf_tdata (abfd)->core->command;
- int n = strlen (command);
- if (0 < n && command[n - 1] == ' ')
- command[n - 1] = '\0';
- }
- return true;
- }
- static void
- tilepro_elf_append_rela_32 (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
- {
- Elf32_External_Rela *loc32;
- loc32 = (Elf32_External_Rela *) s->contents;
- loc32 += s->reloc_count++;
- bfd_elf32_swap_reloca_out (abfd, rel, (bfd_byte *) loc32);
- }
- /* PLT/GOT stuff */
- /* The procedure linkage table starts with the following header:
- {
- rli r29, r29, 16
- lwadd r28, r27, 4
- }
- lw r27, r27
- {
- info 10 ## SP not offset, return PC in LR
- jr r27
- }
- Subsequent entries are the following, jumping to the header at the end:
- lnk r28
- 1:
- {
- auli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
- auli r27, r28, <_GLOBAL_OFFSET_TABLE_ - 1b>
- }
- {
- addli r28, r28, <_GLOBAL_OFFSET_TABLE_ - 1b + MY_GOT_OFFSET>
- addli r27, r27, <_GLOBAL_OFFSET_TABLE_ - 1b>
- }
- {
- auli r29, zero, MY_PLT_INDEX
- lw r28, r28
- }
- {
- info 10 ## SP not offset, return PC in LR
- jr r28
- }
- We initially store MY_PLT_INDEX in the high bits so that we can use the all
- 16 bits as an unsigned offset; if we use the low bits we would get an
- unwanted sign extension. The PLT header then rotates the index to get the
- right value, before calling the resolution routine. This computation can
- fit in unused bundle slots so it's free.
- This code sequence lets the code at at the start of the PLT determine
- which PLT entry was executed by examining 'r29'.
- Note that MY_PLT_INDEX skips over the header entries, so the first
- actual jump table entry has index zero.
- */
- #define PLT_HEADER_SIZE_IN_BUNDLES 3
- #define PLT_ENTRY_SIZE_IN_BUNDLES 5
- #define PLT_HEADER_SIZE \
- (PLT_HEADER_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES)
- #define PLT_ENTRY_SIZE \
- (PLT_ENTRY_SIZE_IN_BUNDLES * TILEPRO_BUNDLE_SIZE_IN_BYTES)
- /* The size in bytes of an entry in the global offset table. */
- #define GOT_ENTRY_SIZE TILEPRO_BYTES_PER_WORD
- #define GOTPLT_HEADER_SIZE (2 * GOT_ENTRY_SIZE)
- static const bfd_byte
- tilepro_plt0_entry[PLT_HEADER_SIZE] =
- {
- 0x5d, 0x07, 0x03, 0x70,
- 0x6e, 0x23, 0xd0, 0x30, /* { rli r29, r29, 16 ; lwadd r28, r27, 4 } */
- 0x00, 0x50, 0xba, 0x6d,
- 0x00, 0x08, 0x6d, 0xdc, /* { lw r27, r27 } */
- 0xff, 0xaf, 0x10, 0x50,
- 0x60, 0x03, 0x18, 0x08, /* { info 10 ; jr r27 } */
- };
- static const bfd_byte
- tilepro_short_plt_entry[PLT_ENTRY_SIZE] =
- {
- 0x00, 0x50, 0x16, 0x70,
- 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */
- 0x1c, 0x07, 0x00, 0xa0,
- 0x8d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r28, 0 } */
- 0xdd, 0x0f, 0x00, 0x30,
- 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */
- 0xff, 0xaf, 0x10, 0x50,
- 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */
- 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00,
- };
- static const bfd_byte
- tilepro_long_plt_entry[PLT_ENTRY_SIZE] =
- {
- 0x00, 0x50, 0x16, 0x70,
- 0x0e, 0x00, 0x1a, 0x08, /* { lnk r28 } */
- 0x1c, 0x07, 0x00, 0xb0,
- 0x8d, 0x03, 0x00, 0x20, /* { auli r28, r28, 0 ; auli r27, r28, 0 } */
- 0x1c, 0x07, 0x00, 0xa0,
- 0x6d, 0x03, 0x00, 0x18, /* { addli r28, r28, 0 ; addli r27, r27, 0 } */
- 0xdd, 0x0f, 0x00, 0x30,
- 0x8e, 0x73, 0x0b, 0x40, /* { auli r29, zero, 0 ; lw r28, r28 } */
- 0xff, 0xaf, 0x10, 0x50,
- 0x80, 0x03, 0x18, 0x08, /* { info 10 ; jr r28 } */
- };
- static bfd_vma
- tilepro_ha16(bfd_vma vma)
- {
- return ((vma >> 16) + ((vma >> 15) & 1)) & 0xffff;
- }
- static int
- tilepro_plt_entry_build (asection *splt, asection *sgotplt, bfd_vma offset,
- bfd_vma *r_offset)
- {
- int plt_index = (offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE;
- int got_offset = plt_index * GOT_ENTRY_SIZE + GOTPLT_HEADER_SIZE;
- tilepro_bundle_bits *pc;
- /* Compute the distance from the got entry to the lnk. */
- bfd_signed_vma dist_got_entry = sgotplt->output_section->vma
- + sgotplt->output_offset
- + got_offset
- - splt->output_section->vma
- - splt->output_offset
- - offset
- - TILEPRO_BUNDLE_SIZE_IN_BYTES;
- /* Compute the distance to GOTPLT[0]. */
- bfd_signed_vma dist_got0 = dist_got_entry - got_offset;
- /* Check whether we can use the short plt entry with 16-bit offset. */
- bool short_plt_entry =
- (dist_got_entry <= 0x7fff && dist_got0 >= -0x8000);
- /* Copy the plt entry template. */
- memcpy (splt->contents + offset,
- short_plt_entry ? tilepro_short_plt_entry : tilepro_long_plt_entry,
- PLT_ENTRY_SIZE);
- /* Write the immediate offsets. */
- pc = (tilepro_bundle_bits *)(splt->contents + offset);
- pc++;
- if (!short_plt_entry)
- {
- /* { auli r28, r28, &GOTPLT[MY_GOT_INDEX] ; auli r27, r28, &GOTPLT[0] } */
- *pc++ |= create_Imm16_X0 (tilepro_ha16 (dist_got_entry))
- | create_Imm16_X1 (tilepro_ha16 (dist_got0));
- }
- /* { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r28, &GOTPLT[0] } or
- { addli r28, r28, &GOTPLT[MY_GOT_INDEX] ; addli r27, r27, &GOTPLT[0] } */
- *pc++ |= create_Imm16_X0 (dist_got_entry)
- | create_Imm16_X1 (dist_got0);
- /* { auli r29, zero, MY_PLT_INDEX ; lw r28, r28 } */
- *pc |= create_Imm16_X0 (plt_index);
- /* Set the relocation offset. */
- *r_offset = got_offset;
- return plt_index;
- }
- #define TILEPRO_ELF_RELA_BYTES (sizeof(Elf32_External_Rela))
- /* Create an entry in an TILEPro ELF linker hash table. */
- static struct bfd_hash_entry *
- link_hash_newfunc (struct bfd_hash_entry *entry,
- struct bfd_hash_table *table, const char *string)
- {
- /* Allocate the structure if it has not already been allocated by a
- subclass. */
- if (entry == NULL)
- {
- entry =
- bfd_hash_allocate (table,
- sizeof (struct tilepro_elf_link_hash_entry));
- if (entry == NULL)
- return entry;
- }
- /* Call the allocation method of the superclass. */
- entry = _bfd_elf_link_hash_newfunc (entry, table, string);
- if (entry != NULL)
- {
- struct tilepro_elf_link_hash_entry *eh;
- eh = (struct tilepro_elf_link_hash_entry *) entry;
- eh->tls_type = GOT_UNKNOWN;
- }
- return entry;
- }
- /* Create a TILEPRO ELF linker hash table. */
- static struct bfd_link_hash_table *
- tilepro_elf_link_hash_table_create (bfd *abfd)
- {
- struct elf_link_hash_table *ret;
- size_t amt = sizeof (struct elf_link_hash_table);
- ret = (struct elf_link_hash_table *) bfd_zmalloc (amt);
- if (ret == NULL)
- return NULL;
- if (!_bfd_elf_link_hash_table_init (ret, abfd, link_hash_newfunc,
- sizeof (struct tilepro_elf_link_hash_entry),
- TILEPRO_ELF_DATA))
- {
- free (ret);
- return NULL;
- }
- return &ret->root;
- }
- /* Create the .got section. */
- static bool
- tilepro_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
- {
- flagword flags;
- asection *s, *s_got;
- struct elf_link_hash_entry *h;
- const struct elf_backend_data *bed = get_elf_backend_data (abfd);
- struct elf_link_hash_table *htab = elf_hash_table (info);
- /* This function may be called more than once. */
- if (htab->sgot != NULL)
- return true;
- flags = bed->dynamic_sec_flags;
- s = bfd_make_section_with_flags (abfd,
- (bed->rela_plts_and_copies_p
- ? ".rela.got" : ".rel.got"),
- (bed->dynamic_sec_flags
- | SEC_READONLY));
- if (s == NULL
- || !bfd_set_section_alignment (s, bed->s->log_file_align))
- return false;
- htab->srelgot = s;
- s = s_got = bfd_make_section_with_flags (abfd, ".got", flags);
- if (s == NULL
- || !bfd_set_section_alignment (s, bed->s->log_file_align))
- return false;
- htab->sgot = s;
- /* The first bit of the global offset table is the header. */
- s->size += bed->got_header_size;
- if (bed->want_got_plt)
- {
- s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
- if (s == NULL
- || !bfd_set_section_alignment (s, bed->s->log_file_align))
- return false;
- htab->sgotplt = s;
- /* Reserve room for the header. */
- s->size += GOTPLT_HEADER_SIZE;
- }
- if (bed->want_got_sym)
- {
- /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
- section. We don't do this in the linker script because we don't want
- to define the symbol if we are not creating a global offset
- table. */
- h = _bfd_elf_define_linkage_sym (abfd, info, s_got,
- "_GLOBAL_OFFSET_TABLE_");
- elf_hash_table (info)->hgot = h;
- if (h == NULL)
- return false;
- }
- return true;
- }
- /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
- .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
- hash table. */
- static bool
- tilepro_elf_create_dynamic_sections (bfd *dynobj,
- struct bfd_link_info *info)
- {
- if (!tilepro_elf_create_got_section (dynobj, info))
- return false;
- return _bfd_elf_create_dynamic_sections (dynobj, info);
- }
- /* Copy the extra info we tack onto an elf_link_hash_entry. */
- static void
- tilepro_elf_copy_indirect_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *dir,
- struct elf_link_hash_entry *ind)
- {
- struct tilepro_elf_link_hash_entry *edir, *eind;
- edir = (struct tilepro_elf_link_hash_entry *) dir;
- eind = (struct tilepro_elf_link_hash_entry *) ind;
- if (ind->root.type == bfd_link_hash_indirect
- && dir->got.refcount <= 0)
- {
- edir->tls_type = eind->tls_type;
- eind->tls_type = GOT_UNKNOWN;
- }
- _bfd_elf_link_hash_copy_indirect (info, dir, ind);
- }
- static int
- tilepro_tls_translate_to_le (int r_type)
- {
- switch (r_type)
- {
- case R_TILEPRO_IMM16_X0_TLS_GD:
- case R_TILEPRO_IMM16_X0_TLS_IE:
- return R_TILEPRO_IMM16_X0_TLS_LE;
- case R_TILEPRO_IMM16_X1_TLS_GD:
- case R_TILEPRO_IMM16_X1_TLS_IE:
- return R_TILEPRO_IMM16_X1_TLS_LE;
- case R_TILEPRO_IMM16_X0_TLS_GD_LO:
- case R_TILEPRO_IMM16_X0_TLS_IE_LO:
- return R_TILEPRO_IMM16_X0_TLS_LE_LO;
- case R_TILEPRO_IMM16_X1_TLS_GD_LO:
- case R_TILEPRO_IMM16_X1_TLS_IE_LO:
- return R_TILEPRO_IMM16_X1_TLS_LE_LO;
- case R_TILEPRO_IMM16_X0_TLS_GD_HI:
- case R_TILEPRO_IMM16_X0_TLS_IE_HI:
- return R_TILEPRO_IMM16_X0_TLS_LE_HI;
- case R_TILEPRO_IMM16_X1_TLS_GD_HI:
- case R_TILEPRO_IMM16_X1_TLS_IE_HI:
- return R_TILEPRO_IMM16_X1_TLS_LE_HI;
- case R_TILEPRO_IMM16_X0_TLS_GD_HA:
- case R_TILEPRO_IMM16_X0_TLS_IE_HA:
- return R_TILEPRO_IMM16_X0_TLS_LE_HA;
- case R_TILEPRO_IMM16_X1_TLS_GD_HA:
- case R_TILEPRO_IMM16_X1_TLS_IE_HA:
- return R_TILEPRO_IMM16_X1_TLS_LE_HA;
- }
- return r_type;
- }
- static int
- tilepro_tls_translate_to_ie (int r_type)
- {
- switch (r_type)
- {
- case R_TILEPRO_IMM16_X0_TLS_GD:
- case R_TILEPRO_IMM16_X0_TLS_IE:
- return R_TILEPRO_IMM16_X0_TLS_IE;
- case R_TILEPRO_IMM16_X1_TLS_GD:
- case R_TILEPRO_IMM16_X1_TLS_IE:
- return R_TILEPRO_IMM16_X1_TLS_IE;
- case R_TILEPRO_IMM16_X0_TLS_GD_LO:
- case R_TILEPRO_IMM16_X0_TLS_IE_LO:
- return R_TILEPRO_IMM16_X0_TLS_IE_LO;
- case R_TILEPRO_IMM16_X1_TLS_GD_LO:
- case R_TILEPRO_IMM16_X1_TLS_IE_LO:
- return R_TILEPRO_IMM16_X1_TLS_IE_LO;
- case R_TILEPRO_IMM16_X0_TLS_GD_HI:
- case R_TILEPRO_IMM16_X0_TLS_IE_HI:
- return R_TILEPRO_IMM16_X0_TLS_IE_HI;
- case R_TILEPRO_IMM16_X1_TLS_GD_HI:
- case R_TILEPRO_IMM16_X1_TLS_IE_HI:
- return R_TILEPRO_IMM16_X1_TLS_IE_HI;
- case R_TILEPRO_IMM16_X0_TLS_GD_HA:
- case R_TILEPRO_IMM16_X0_TLS_IE_HA:
- return R_TILEPRO_IMM16_X0_TLS_IE_HA;
- case R_TILEPRO_IMM16_X1_TLS_GD_HA:
- case R_TILEPRO_IMM16_X1_TLS_IE_HA:
- return R_TILEPRO_IMM16_X1_TLS_IE_HA;
- }
- return r_type;
- }
- static int
- tilepro_elf_tls_transition (struct bfd_link_info *info, int r_type,
- int is_local)
- {
- if (!bfd_link_executable (info))
- return r_type;
- if (is_local)
- return tilepro_tls_translate_to_le (r_type);
- else
- return tilepro_tls_translate_to_ie (r_type);
- }
- /* Look through the relocs for a section during the first phase, and
- allocate space in the global offset table or procedure linkage
- table. */
- static bool
- tilepro_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
- asection *sec, const Elf_Internal_Rela *relocs)
- {
- struct elf_link_hash_table *htab;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- const Elf_Internal_Rela *rel;
- const Elf_Internal_Rela *rel_end;
- asection *sreloc;
- int num_relocs;
- if (bfd_link_relocatable (info))
- return true;
- htab = tilepro_elf_hash_table (info);
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (abfd);
- sreloc = NULL;
- num_relocs = sec->reloc_count;
- BFD_ASSERT (is_tilepro_elf (abfd) || num_relocs == 0);
- if (htab->dynobj == NULL)
- htab->dynobj = abfd;
- rel_end = relocs + num_relocs;
- for (rel = relocs; rel < rel_end; rel++)
- {
- unsigned int r_type;
- unsigned int r_symndx;
- struct elf_link_hash_entry *h;
- int tls_type;
- r_symndx = ELF32_R_SYM (rel->r_info);
- r_type = ELF32_R_TYPE (rel->r_info);
- if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
- {
- /* xgettext:c-format */
- _bfd_error_handler (_("%pB: bad symbol index: %d"),
- abfd, r_symndx);
- return false;
- }
- if (r_symndx < symtab_hdr->sh_info)
- h = NULL;
- else
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- }
- r_type = tilepro_elf_tls_transition (info, r_type, h == NULL);
- switch (r_type)
- {
- case R_TILEPRO_IMM16_X0_TLS_LE:
- case R_TILEPRO_IMM16_X1_TLS_LE:
- case R_TILEPRO_IMM16_X0_TLS_LE_LO:
- case R_TILEPRO_IMM16_X1_TLS_LE_LO:
- case R_TILEPRO_IMM16_X0_TLS_LE_HI:
- case R_TILEPRO_IMM16_X1_TLS_LE_HI:
- case R_TILEPRO_IMM16_X0_TLS_LE_HA:
- case R_TILEPRO_IMM16_X1_TLS_LE_HA:
- if (!bfd_link_executable (info))
- goto r_tilepro_plt32;
- break;
- case R_TILEPRO_IMM16_X0_TLS_GD:
- case R_TILEPRO_IMM16_X1_TLS_GD:
- case R_TILEPRO_IMM16_X0_TLS_GD_LO:
- case R_TILEPRO_IMM16_X1_TLS_GD_LO:
- case R_TILEPRO_IMM16_X0_TLS_GD_HI:
- case R_TILEPRO_IMM16_X1_TLS_GD_HI:
- case R_TILEPRO_IMM16_X0_TLS_GD_HA:
- case R_TILEPRO_IMM16_X1_TLS_GD_HA:
- BFD_ASSERT (bfd_link_pic (info));
- tls_type = GOT_TLS_GD;
- goto have_got_reference;
- case R_TILEPRO_IMM16_X0_TLS_IE:
- case R_TILEPRO_IMM16_X1_TLS_IE:
- case R_TILEPRO_IMM16_X0_TLS_IE_LO:
- case R_TILEPRO_IMM16_X1_TLS_IE_LO:
- case R_TILEPRO_IMM16_X0_TLS_IE_HI:
- case R_TILEPRO_IMM16_X1_TLS_IE_HI:
- case R_TILEPRO_IMM16_X0_TLS_IE_HA:
- case R_TILEPRO_IMM16_X1_TLS_IE_HA:
- tls_type = GOT_TLS_IE;
- if (!bfd_link_executable (info))
- info->flags |= DF_STATIC_TLS;
- goto have_got_reference;
- case R_TILEPRO_IMM16_X0_GOT:
- case R_TILEPRO_IMM16_X1_GOT:
- case R_TILEPRO_IMM16_X0_GOT_LO:
- case R_TILEPRO_IMM16_X1_GOT_LO:
- case R_TILEPRO_IMM16_X0_GOT_HI:
- case R_TILEPRO_IMM16_X1_GOT_HI:
- case R_TILEPRO_IMM16_X0_GOT_HA:
- case R_TILEPRO_IMM16_X1_GOT_HA:
- tls_type = GOT_NORMAL;
- /* Fall Through */
- have_got_reference:
- /* This symbol requires a global offset table entry. */
- {
- int old_tls_type;
- if (h != NULL)
- {
- h->got.refcount += 1;
- old_tls_type = tilepro_elf_hash_entry(h)->tls_type;
- }
- else
- {
- bfd_signed_vma *local_got_refcounts;
- /* This is a global offset table entry for a local symbol. */
- local_got_refcounts = elf_local_got_refcounts (abfd);
- if (local_got_refcounts == NULL)
- {
- bfd_size_type size;
- size = symtab_hdr->sh_info;
- size *= (sizeof (bfd_signed_vma) + sizeof(char));
- local_got_refcounts = ((bfd_signed_vma *)
- bfd_zalloc (abfd, size));
- if (local_got_refcounts == NULL)
- return false;
- elf_local_got_refcounts (abfd) = local_got_refcounts;
- _bfd_tilepro_elf_local_got_tls_type (abfd)
- = (char *) (local_got_refcounts + symtab_hdr->sh_info);
- }
- local_got_refcounts[r_symndx] += 1;
- old_tls_type =
- _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx];
- }
- /* If a TLS symbol is accessed using IE at least once,
- there is no point to use dynamic model for it. */
- if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
- && (old_tls_type != GOT_TLS_GD
- || tls_type != GOT_TLS_IE))
- {
- if (old_tls_type == GOT_TLS_IE && tls_type == GOT_TLS_GD)
- tls_type = old_tls_type;
- else
- {
- _bfd_error_handler
- /* xgettext:c-format */
- (_("%pB: `%s' accessed both as normal and thread local symbol"),
- abfd, h ? h->root.root.string : "<local>");
- return false;
- }
- }
- if (old_tls_type != tls_type)
- {
- if (h != NULL)
- tilepro_elf_hash_entry (h)->tls_type = tls_type;
- else
- _bfd_tilepro_elf_local_got_tls_type (abfd) [r_symndx] =
- tls_type;
- }
- }
- if (htab->sgot == NULL)
- {
- if (!tilepro_elf_create_got_section (htab->dynobj, info))
- return false;
- }
- break;
- case R_TILEPRO_TLS_GD_CALL:
- if (!bfd_link_executable (info))
- {
- /* These are basically R_TILEPRO_JOFFLONG_X1_PLT relocs
- against __tls_get_addr. */
- struct bfd_link_hash_entry *bh = NULL;
- if (! _bfd_generic_link_add_one_symbol (info, abfd,
- "__tls_get_addr", 0,
- bfd_und_section_ptr, 0,
- NULL, false, false,
- &bh))
- return false;
- h = (struct elf_link_hash_entry *) bh;
- }
- else
- break;
- /* Fall through */
- case R_TILEPRO_JOFFLONG_X1_PLT:
- /* This symbol requires a procedure linkage table entry. We
- actually build the entry in adjust_dynamic_symbol,
- because this might be a case of linking PIC code without
- linking in any dynamic objects, in which case we don't
- need to generate a procedure linkage table after all. */
- if (h != NULL)
- {
- h->needs_plt = 1;
- h->plt.refcount += 1;
- }
- break;
- case R_TILEPRO_32_PCREL:
- case R_TILEPRO_16_PCREL:
- case R_TILEPRO_8_PCREL:
- case R_TILEPRO_IMM16_X0_PCREL:
- case R_TILEPRO_IMM16_X1_PCREL:
- case R_TILEPRO_IMM16_X0_LO_PCREL:
- case R_TILEPRO_IMM16_X1_LO_PCREL:
- case R_TILEPRO_IMM16_X0_HI_PCREL:
- case R_TILEPRO_IMM16_X1_HI_PCREL:
- case R_TILEPRO_IMM16_X0_HA_PCREL:
- case R_TILEPRO_IMM16_X1_HA_PCREL:
- if (h != NULL)
- h->non_got_ref = 1;
- if (h != NULL
- && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
- break;
- /* Fall through. */
- case R_TILEPRO_32:
- case R_TILEPRO_16:
- case R_TILEPRO_8:
- case R_TILEPRO_LO16:
- case R_TILEPRO_HI16:
- case R_TILEPRO_HA16:
- case R_TILEPRO_COPY:
- case R_TILEPRO_GLOB_DAT:
- case R_TILEPRO_JMP_SLOT:
- case R_TILEPRO_RELATIVE:
- case R_TILEPRO_BROFF_X1:
- case R_TILEPRO_JOFFLONG_X1:
- case R_TILEPRO_IMM8_X0:
- case R_TILEPRO_IMM8_Y0:
- case R_TILEPRO_IMM8_X1:
- case R_TILEPRO_IMM8_Y1:
- case R_TILEPRO_DEST_IMM8_X1:
- case R_TILEPRO_MT_IMM15_X1:
- case R_TILEPRO_MF_IMM15_X1:
- case R_TILEPRO_IMM16_X0:
- case R_TILEPRO_IMM16_X1:
- case R_TILEPRO_IMM16_X0_LO:
- case R_TILEPRO_IMM16_X1_LO:
- case R_TILEPRO_IMM16_X0_HI:
- case R_TILEPRO_IMM16_X1_HI:
- case R_TILEPRO_IMM16_X0_HA:
- case R_TILEPRO_IMM16_X1_HA:
- case R_TILEPRO_MMSTART_X0:
- case R_TILEPRO_MMEND_X0:
- case R_TILEPRO_MMSTART_X1:
- case R_TILEPRO_MMEND_X1:
- case R_TILEPRO_SHAMT_X0:
- case R_TILEPRO_SHAMT_X1:
- case R_TILEPRO_SHAMT_Y0:
- case R_TILEPRO_SHAMT_Y1:
- if (h != NULL)
- h->non_got_ref = 1;
- r_tilepro_plt32:
- if (h != NULL && !bfd_link_pic (info))
- {
- /* We may need a .plt entry if the function this reloc
- refers to is in a shared lib. */
- h->plt.refcount += 1;
- }
- /* If we are creating a shared library, and this is a reloc
- against a global symbol, or a non PC relative reloc
- against a local symbol, then we need to copy the reloc
- into the shared library. However, if we are linking with
- -Bsymbolic, we do not need to copy a reloc against a
- global symbol which is defined in an object we are
- including in the link (i.e., DEF_REGULAR is set). At
- this point we have not seen all the input files, so it is
- possible that DEF_REGULAR is not set now but will be set
- later (it is never cleared). In case of a weak definition,
- DEF_REGULAR may be cleared later by a strong definition in
- a shared library. We account for that possibility below by
- storing information in the relocs_copied field of the hash
- table entry. A similar situation occurs when creating
- shared libraries and symbol visibility changes render the
- symbol local.
- If on the other hand, we are creating an executable, we
- may need to keep relocations for symbols satisfied by a
- dynamic library if we manage to avoid copy relocs for the
- symbol. */
- if ((bfd_link_pic (info)
- && (sec->flags & SEC_ALLOC) != 0
- && (! tilepro_elf_howto_table[r_type].pc_relative
- || (h != NULL
- && (! info->symbolic
- || h->root.type == bfd_link_hash_defweak
- || !h->def_regular))))
- || (!bfd_link_pic (info)
- && (sec->flags & SEC_ALLOC) != 0
- && h != NULL
- && (h->root.type == bfd_link_hash_defweak
- || !h->def_regular)))
- {
- struct elf_dyn_relocs *p;
- struct elf_dyn_relocs **head;
- /* When creating a shared object, we must copy these
- relocs into the output file. We create a reloc
- section in dynobj and make room for the reloc. */
- if (sreloc == NULL)
- {
- sreloc = _bfd_elf_make_dynamic_reloc_section
- (sec, htab->dynobj, 2, abfd, /*rela?*/ true);
- if (sreloc == NULL)
- return false;
- }
- /* If this is a global symbol, we count the number of
- relocations we need for this symbol. */
- if (h != NULL)
- head = &h->dyn_relocs;
- else
- {
- /* Track dynamic relocs needed for local syms too.
- We really need local syms available to do this
- easily. Oh well. */
- asection *s;
- void *vpp;
- Elf_Internal_Sym *isym;
- isym = bfd_sym_from_r_symndx (&htab->sym_cache,
- abfd, r_symndx);
- if (isym == NULL)
- return false;
- s = bfd_section_from_elf_index (abfd, isym->st_shndx);
- if (s == NULL)
- s = sec;
- vpp = &elf_section_data (s)->local_dynrel;
- head = (struct elf_dyn_relocs **) vpp;
- }
- p = *head;
- if (p == NULL || p->sec != sec)
- {
- size_t amt = sizeof *p;
- p = ((struct elf_dyn_relocs *)
- bfd_alloc (htab->dynobj, amt));
- if (p == NULL)
- return false;
- p->next = *head;
- *head = p;
- p->sec = sec;
- p->count = 0;
- p->pc_count = 0;
- }
- p->count += 1;
- if (tilepro_elf_howto_table[r_type].pc_relative)
- p->pc_count += 1;
- }
- break;
- case R_TILEPRO_GNU_VTINHERIT:
- if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
- return false;
- break;
- case R_TILEPRO_GNU_VTENTRY:
- if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
- return false;
- break;
- default:
- break;
- }
- }
- return true;
- }
- static asection *
- tilepro_elf_gc_mark_hook (asection *sec,
- struct bfd_link_info *info,
- Elf_Internal_Rela *rel,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
- {
- if (h != NULL)
- {
- switch (ELF32_R_TYPE (rel->r_info))
- {
- case R_TILEPRO_GNU_VTINHERIT:
- case R_TILEPRO_GNU_VTENTRY:
- return NULL;
- }
- }
- /* FIXME: The test here, in check_relocs and in relocate_section
- dealing with TLS optimization, ought to be !bfd_link_executable (info). */
- if (bfd_link_pic (info))
- {
- struct bfd_link_hash_entry *bh;
- switch (ELF32_R_TYPE (rel->r_info))
- {
- case R_TILEPRO_TLS_GD_CALL:
- /* This reloc implicitly references __tls_get_addr. We know
- another reloc will reference the same symbol as the one
- on this reloc, so the real symbol and section will be
- gc marked when processing the other reloc. That lets
- us handle __tls_get_addr here. */
- bh = NULL;
- if (! _bfd_generic_link_add_one_symbol (info, sec->owner,
- "__tls_get_addr", 0,
- bfd_und_section_ptr,
- 0, NULL, false,
- false, &bh))
- return NULL;
- h = (struct elf_link_hash_entry *) bh;
- BFD_ASSERT (h != NULL);
- h->mark = 1;
- if (h->is_weakalias)
- weakdef (h)->mark = 1;
- sym = NULL;
- }
- }
- return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
- }
- /* Adjust a symbol defined by a dynamic object and referenced by a
- regular object. The current definition is in some section of the
- dynamic object, but we're not including those sections. We have to
- change the definition to something the rest of the link can
- understand. */
- static bool
- tilepro_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *h)
- {
- struct elf_link_hash_table *htab;
- asection *s, *srel;
- htab = tilepro_elf_hash_table (info);
- BFD_ASSERT (htab != NULL);
- /* Make sure we know what is going on here. */
- BFD_ASSERT (htab->dynobj != NULL
- && (h->needs_plt
- || h->is_weakalias
- || (h->def_dynamic
- && h->ref_regular
- && !h->def_regular)));
- /* If this is a function, put it in the procedure linkage table. We
- will fill in the contents of the procedure linkage table later
- (although we could actually do it here). */
- if (h->type == STT_FUNC || h->needs_plt)
- {
- if (h->plt.refcount <= 0
- || SYMBOL_CALLS_LOCAL (info, h)
- || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
- && h->root.type == bfd_link_hash_undefweak))
- {
- /* This case can occur if we saw a R_TILEPRO_JOFFLONG_X1_PLT
- reloc in an input file, but the symbol was never referred
- to by a dynamic object, or if all references were garbage
- collected. In such a case, we don't actually need to build
- a procedure linkage table, and we can just do a
- R_TILEPRO_JOFFLONG_X1 relocation instead. */
- h->plt.offset = (bfd_vma) -1;
- h->needs_plt = 0;
- }
- return true;
- }
- else
- h->plt.offset = (bfd_vma) -1;
- /* If this is a weak symbol, and there is a real definition, the
- processor independent code will have arranged for us to see the
- real definition first, and we can just use the same value. */
- if (h->is_weakalias)
- {
- struct elf_link_hash_entry *def = weakdef (h);
- BFD_ASSERT (def->root.type == bfd_link_hash_defined);
- h->root.u.def.section = def->root.u.def.section;
- h->root.u.def.value = def->root.u.def.value;
- return true;
- }
- /* This is a reference to a symbol defined by a dynamic object which
- is not a function. */
- /* If we are creating a shared library, we must presume that the
- only references to the symbol are via the global offset table.
- For such cases we need not do anything here; the relocations will
- be handled correctly by relocate_section. */
- if (bfd_link_pic (info))
- return true;
- /* If there are no references to this symbol that do not use the
- GOT, we don't need to generate a copy reloc. */
- if (!h->non_got_ref)
- return true;
- /* If -z nocopyreloc was given, we won't generate them either. */
- if (info->nocopyreloc)
- {
- h->non_got_ref = 0;
- return true;
- }
- /* If we don't find any dynamic relocs in read-only sections, then
- we'll be keeping the dynamic relocs and avoiding the copy reloc. */
- if (!_bfd_elf_readonly_dynrelocs (h))
- {
- h->non_got_ref = 0;
- return true;
- }
- /* We must allocate the symbol in our .dynbss section, which will
- become part of the .bss section of the executable. There will be
- an entry for this symbol in the .dynsym section. The dynamic
- object will contain position independent code, so all references
- from the dynamic object to this symbol will go through the global
- offset table. The dynamic linker will use the .dynsym entry to
- determine the address it must put in the global offset table, so
- both the dynamic object and the regular object will refer to the
- same memory location for the variable. */
- /* We must generate a R_TILEPRO_COPY reloc to tell the dynamic linker
- to copy the initial value out of the dynamic object and into the
- runtime process image. We need to remember the offset into the
- .rel.bss section we are going to use. */
- if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
- {
- s = htab->sdynrelro;
- srel = htab->sreldynrelro;
- }
- else
- {
- s = htab->sdynbss;
- srel = htab->srelbss;
- }
- if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
- {
- srel->size += TILEPRO_ELF_RELA_BYTES;
- h->needs_copy = 1;
- }
- return _bfd_elf_adjust_dynamic_copy (info, h, s);
- }
- /* Allocate space in .plt, .got and associated reloc sections for
- dynamic relocs. */
- static bool
- allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
- {
- struct bfd_link_info *info;
- struct elf_link_hash_table *htab;
- struct elf_dyn_relocs *p;
- if (h->root.type == bfd_link_hash_indirect)
- return true;
- info = (struct bfd_link_info *) inf;
- htab = tilepro_elf_hash_table (info);
- BFD_ASSERT (htab != NULL);
- if (htab->dynamic_sections_created
- && h->plt.refcount > 0)
- {
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
- }
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
- {
- asection *s = htab->splt;
- /* Allocate room for the header. */
- if (s->size == 0)
- {
- s->size = PLT_ENTRY_SIZE;
- }
- h->plt.offset = s->size;
- /* If this symbol is not defined in a regular file, and we are
- not generating a shared library, then set the symbol to this
- location in the .plt. This is required to make function
- pointers compare as equal between the normal executable and
- the shared library. */
- if (! bfd_link_pic (info)
- && !h->def_regular)
- {
- h->root.u.def.section = s;
- h->root.u.def.value = h->plt.offset;
- }
- /* Make room for this entry. */
- s->size += PLT_ENTRY_SIZE;
- /* We also need to make an entry in the .got.plt section. */
- htab->sgotplt->size += GOT_ENTRY_SIZE;
- /* We also need to make an entry in the .rela.plt section. */
- htab->srelplt->size += TILEPRO_ELF_RELA_BYTES;
- }
- else
- {
- h->plt.offset = (bfd_vma) -1;
- h->needs_plt = 0;
- }
- }
- else
- {
- h->plt.offset = (bfd_vma) -1;
- h->needs_plt = 0;
- }
- /* If a TLS_IE symbol is now local to the binary, make it a TLS_LE
- requiring no TLS entry. */
- if (h->got.refcount > 0
- && bfd_link_executable (info)
- && h->dynindx == -1
- && tilepro_elf_hash_entry(h)->tls_type == GOT_TLS_IE)
- h->got.offset = (bfd_vma) -1;
- else if (h->got.refcount > 0)
- {
- asection *s;
- bool dyn;
- int tls_type = tilepro_elf_hash_entry(h)->tls_type;
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
- }
- s = htab->sgot;
- h->got.offset = s->size;
- s->size += TILEPRO_BYTES_PER_WORD;
- /* R_TILEPRO_IMM16_Xn_TLS_GD entries need 2 consecutive GOT slots. */
- if (tls_type == GOT_TLS_GD)
- s->size += TILEPRO_BYTES_PER_WORD;
- dyn = htab->dynamic_sections_created;
- /* R_TILEPRO_IMM16_Xn_TLS_IE_xxx needs one dynamic relocation,
- R_TILEPRO_IMM16_Xn_TLS_GD_xxx needs two if local symbol and two if
- global. */
- if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE)
- htab->srelgot->size += 2 * TILEPRO_ELF_RELA_BYTES;
- else if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
- bfd_link_pic (info),
- h))
- htab->srelgot->size += TILEPRO_ELF_RELA_BYTES;
- }
- else
- h->got.offset = (bfd_vma) -1;
- if (h->dyn_relocs == NULL)
- return true;
- /* In the shared -Bsymbolic case, discard space allocated for
- dynamic pc-relative relocs against symbols which turn out to be
- defined in regular objects. For the normal shared case, discard
- space for pc-relative relocs that have become local due to symbol
- visibility changes. */
- if (bfd_link_pic (info))
- {
- if (SYMBOL_CALLS_LOCAL (info, h))
- {
- struct elf_dyn_relocs **pp;
- for (pp = &h->dyn_relocs; (p = *pp) != NULL; )
- {
- p->count -= p->pc_count;
- p->pc_count = 0;
- if (p->count == 0)
- *pp = p->next;
- else
- pp = &p->next;
- }
- }
- /* Also discard relocs on undefined weak syms with non-default
- visibility. */
- if (h->dyn_relocs != NULL
- && h->root.type == bfd_link_hash_undefweak)
- {
- if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
- || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
- h->dyn_relocs = NULL;
- /* Make sure undefined weak symbols are output as a dynamic
- symbol in PIEs. */
- else if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
- }
- }
- }
- else
- {
- /* For the non-shared case, discard space for relocs against
- symbols which turn out to need copy relocs or are not
- dynamic. */
- if (!h->non_got_ref
- && ((h->def_dynamic
- && !h->def_regular)
- || (htab->dynamic_sections_created
- && (h->root.type == bfd_link_hash_undefweak
- || h->root.type == bfd_link_hash_undefined))))
- {
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
- }
- /* If that succeeded, we know we'll be keeping all the
- relocs. */
- if (h->dynindx != -1)
- goto keep;
- }
- h->dyn_relocs = NULL;
- keep: ;
- }
- /* Finally, allocate space. */
- for (p = h->dyn_relocs; p != NULL; p = p->next)
- {
- asection *sreloc = elf_section_data (p->sec)->sreloc;
- sreloc->size += p->count * TILEPRO_ELF_RELA_BYTES;
- }
- return true;
- }
- /* Return true if the dynamic symbol for a given section should be
- omitted when creating a shared library. */
- static bool
- tilepro_elf_omit_section_dynsym (bfd *output_bfd,
- struct bfd_link_info *info,
- asection *p)
- {
- /* We keep the .got section symbol so that explicit relocations
- against the _GLOBAL_OFFSET_TABLE_ symbol emitted in PIC mode
- can be turned into relocations against the .got symbol. */
- if (strcmp (p->name, ".got") == 0)
- return false;
- return _bfd_elf_omit_section_dynsym_default (output_bfd, info, p);
- }
- /* Set the sizes of the dynamic sections. */
- #define ELF32_DYNAMIC_INTERPRETER "/lib/ld.so.1"
- static bool
- tilepro_elf_size_dynamic_sections (bfd *output_bfd,
- struct bfd_link_info *info)
- {
- (void)output_bfd;
- struct elf_link_hash_table *htab;
- bfd *dynobj;
- asection *s;
- bfd *ibfd;
- htab = tilepro_elf_hash_table (info);
- BFD_ASSERT (htab != NULL);
- dynobj = htab->dynobj;
- BFD_ASSERT (dynobj != NULL);
- if (elf_hash_table (info)->dynamic_sections_created)
- {
- /* Set the contents of the .interp section to the interpreter. */
- if (bfd_link_executable (info) && !info->nointerp)
- {
- s = bfd_get_linker_section (dynobj, ".interp");
- BFD_ASSERT (s != NULL);
- s->size = sizeof ELF32_DYNAMIC_INTERPRETER;
- s->contents = (unsigned char *) ELF32_DYNAMIC_INTERPRETER;
- }
- }
- /* Set up .got offsets for local syms, and space for local dynamic
- relocs. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
- {
- bfd_signed_vma *local_got;
- bfd_signed_vma *end_local_got;
- char *local_tls_type;
- bfd_size_type locsymcount;
- Elf_Internal_Shdr *symtab_hdr;
- asection *srel;
- if (! is_tilepro_elf (ibfd))
- continue;
- for (s = ibfd->sections; s != NULL; s = s->next)
- {
- struct elf_dyn_relocs *p;
- for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
- {
- if (!bfd_is_abs_section (p->sec)
- && bfd_is_abs_section (p->sec->output_section))
- {
- /* Input section has been discarded, either because
- it is a copy of a linkonce section or due to
- linker script /DISCARD/, so we'll be discarding
- the relocs too. */
- }
- else if (p->count != 0)
- {
- srel = elf_section_data (p->sec)->sreloc;
- srel->size += p->count * TILEPRO_ELF_RELA_BYTES;
- if ((p->sec->output_section->flags & SEC_READONLY) != 0)
- {
- info->flags |= DF_TEXTREL;
- info->callbacks->minfo (_("%pB: dynamic relocation in read-only section `%pA'\n"),
- p->sec->owner, p->sec);
- }
- }
- }
- }
- local_got = elf_local_got_refcounts (ibfd);
- if (!local_got)
- continue;
- symtab_hdr = &elf_symtab_hdr (ibfd);
- locsymcount = symtab_hdr->sh_info;
- end_local_got = local_got + locsymcount;
- local_tls_type = _bfd_tilepro_elf_local_got_tls_type (ibfd);
- s = htab->sgot;
- srel = htab->srelgot;
- for (; local_got < end_local_got; ++local_got, ++local_tls_type)
- {
- if (*local_got > 0)
- {
- *local_got = s->size;
- s->size += TILEPRO_BYTES_PER_WORD;
- if (*local_tls_type == GOT_TLS_GD)
- s->size += TILEPRO_BYTES_PER_WORD;
- if (bfd_link_pic (info)
- || *local_tls_type == GOT_TLS_GD
- || *local_tls_type == GOT_TLS_IE)
- srel->size += TILEPRO_ELF_RELA_BYTES;
- }
- else
- *local_got = (bfd_vma) -1;
- }
- }
- /* Allocate global sym .plt and .got entries, and space for global
- sym dynamic relocs. */
- elf_link_hash_traverse (htab, allocate_dynrelocs, info);
- if (elf_hash_table (info)->dynamic_sections_created)
- {
- /* If the .got section is more than 0x8000 bytes, we add
- 0x8000 to the value of _GLOBAL_OFFSET_TABLE_, so that 16
- bit relocations have a greater chance of working. */
- if (htab->sgot->size >= 0x8000
- && elf_hash_table (info)->hgot->root.u.def.value == 0)
- elf_hash_table (info)->hgot->root.u.def.value = 0x8000;
- }
- if (htab->sgotplt)
- {
- struct elf_link_hash_entry *got;
- got = elf_link_hash_lookup (elf_hash_table (info),
- "_GLOBAL_OFFSET_TABLE_",
- false, false, false);
- /* Don't allocate .got.plt section if there are no GOT nor PLT
- entries and there is no refeence to _GLOBAL_OFFSET_TABLE_. */
- if ((got == NULL
- || !got->ref_regular_nonweak)
- && (htab->sgotplt->size
- == GOTPLT_HEADER_SIZE)
- && (htab->splt == NULL
- || htab->splt->size == 0)
- && (htab->sgot == NULL
- || (htab->sgot->size
- == get_elf_backend_data (output_bfd)->got_header_size)))
- htab->sgotplt->size = 0;
- }
- /* The check_relocs and adjust_dynamic_symbol entry points have
- determined the sizes of the various dynamic sections. Allocate
- memory for them. */
- for (s = dynobj->sections; s != NULL; s = s->next)
- {
- if ((s->flags & SEC_LINKER_CREATED) == 0)
- continue;
- if (s == htab->splt
- || s == htab->sgot
- || s == htab->sgotplt
- || s == htab->sdynbss
- || s == htab->sdynrelro)
- {
- /* Strip this section if we don't need it; see the
- comment below. */
- }
- else if (startswith (s->name, ".rela"))
- {
- if (s->size != 0)
- {
- /* We use the reloc_count field as a counter if we need
- to copy relocs into the output file. */
- s->reloc_count = 0;
- }
- }
- else
- {
- /* It's not one of our sections. */
- continue;
- }
- if (s->size == 0)
- {
- /* If we don't need this section, strip it from the
- output file. This is mostly to handle .rela.bss and
- .rela.plt. We must create both sections in
- create_dynamic_sections, because they must be created
- before the linker maps input sections to output
- sections. The linker does that before
- adjust_dynamic_symbol is called, and it is that
- function which decides whether anything needs to go
- into these sections. */
- s->flags |= SEC_EXCLUDE;
- continue;
- }
- if ((s->flags & SEC_HAS_CONTENTS) == 0)
- continue;
- /* Allocate memory for the section contents. Zero the memory
- for the benefit of .rela.plt, which has 4 unused entries
- at the beginning, and we don't want garbage. */
- s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
- if (s->contents == NULL)
- return false;
- }
- return _bfd_elf_add_dynamic_tags (output_bfd, info, true);
- }
- /* Return the base VMA address which should be subtracted from real addresses
- when resolving @dtpoff relocation.
- This is PT_TLS segment p_vaddr. */
- static bfd_vma
- dtpoff_base (struct bfd_link_info *info)
- {
- /* If tls_sec is NULL, we should have signalled an error already. */
- if (elf_hash_table (info)->tls_sec == NULL)
- return 0;
- return elf_hash_table (info)->tls_sec->vma;
- }
- /* Return the relocation value for R_TILEPRO_TLS_TPOFF32. */
- static bfd_vma
- tpoff (struct bfd_link_info *info, bfd_vma address)
- {
- struct elf_link_hash_table *htab = elf_hash_table (info);
- /* If tls_sec is NULL, we should have signalled an error already. */
- if (htab->tls_sec == NULL)
- return 0;
- return (address - htab->tls_sec->vma);
- }
- /* Replace the MASK bits in ADDR with those in INSN, for the next
- TILEPRO_BUNDLE_SIZE_IN_BYTES bytes. */
- static void
- tilepro_replace_insn (bfd_byte *addr, const bfd_byte *mask,
- const bfd_byte *insn)
- {
- int i;
- for (i = 0; i < TILEPRO_BUNDLE_SIZE_IN_BYTES; i++)
- {
- addr[i] = (addr[i] & ~mask[i]) | (insn[i] & mask[i]);
- }
- }
- /* Mask to extract the bits corresponding to an instruction in a
- specific pipe of a bundle. */
- static const bfd_byte insn_mask_X1[] = {
- 0x00, 0x00, 0x00, 0x80, 0xff, 0xff, 0xff, 0x7f
- };
- /* Mask to extract the bits corresponding to an instruction in a
- specific pipe of a bundle, minus the destination operand and the
- first source operand. */
- static const bfd_byte insn_mask_X0_no_dest_no_srca[] = {
- 0x00, 0xf0, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00
- };
- static const bfd_byte insn_mask_X1_no_dest_no_srca[] = {
- 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0xff, 0x7f
- };
- static const bfd_byte insn_mask_Y0_no_dest_no_srca[] = {
- 0x00, 0xf0, 0x0f, 0x78, 0x00, 0x00, 0x00, 0x00
- };
- static const bfd_byte insn_mask_Y1_no_dest_no_srca[] = {
- 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x07, 0x78
- };
- /* Mask to extract the first source operand of an instruction. */
- static const bfd_byte srca_mask_X0[] = {
- 0xc0, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
- };
- static const bfd_byte srca_mask_X1[] = {
- 0x00, 0x00, 0x00, 0x00, 0xe0, 0x07, 0x00, 0x00
- };
- /* Various instructions synthesized to support tls references. */
- /* move r0, r0 in the X1 pipe, used for tls le. */
- static const bfd_byte insn_tls_le_move_X1[] = {
- 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x33, 0x08
- };
- /* move r0, zero in the X0 and X1 pipe, used for tls le. */
- static const bfd_byte insn_tls_le_move_zero_X0X1[] = {
- 0xc0, 0xff, 0xcf, 0x00, 0xe0, 0xff, 0x33, 0x08
- };
- /* lw r0, r0 in the X1 pipe, used for tls ie. */
- static const bfd_byte insn_tls_ie_lw_X1[] = {
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0x0b, 0x40
- };
- /* add r0, r0, tp in various pipes, used for tls ie. */
- static const bfd_byte insn_tls_ie_add_X0X1[] = {
- 0x00, 0x50, 0x0f, 0x00, 0x00, 0xa8, 0x07, 0x08
- };
- static const bfd_byte insn_tls_ie_add_Y0Y1[] = {
- 0x00, 0x50, 0x03, 0x08, 0x00, 0xa8, 0x01, 0x8c
- };
- /* move r0, r0 in various pipes, used for tls gd. */
- static const bfd_byte insn_tls_gd_add_X0X1[] = {
- 0x00, 0xf0, 0xcf, 0x00, 0x00, 0xf8, 0x33, 0x08
- };
- static const bfd_byte insn_tls_gd_add_Y0Y1[] = {
- 0x00, 0xf0, 0x0b, 0x18, 0x00, 0xf8, 0x05, 0x9c
- };
- /* Relocate an TILEPRO ELF section.
- The RELOCATE_SECTION function is called by the new ELF backend linker
- to handle the relocations for a section.
- The relocs are always passed as Rela structures.
- This function is responsible for adjusting the section contents as
- necessary, and (if generating a relocatable output file) adjusting
- the reloc addend as necessary.
- This function does not have to worry about setting the reloc
- address or the reloc symbol index.
- LOCAL_SYMS is a pointer to the swapped in local symbols.
- LOCAL_SECTIONS is an array giving the section in the input file
- corresponding to the st_shndx field of each local symbol.
- The global hash table entry for the global symbols can be found
- via elf_sym_hashes (input_bfd).
- When generating relocatable output, this function must handle
- STB_LOCAL/STT_SECTION symbols specially. The output symbol is
- going to be the section symbol corresponding to the output
- section, which means that the addend must be adjusted
- accordingly. */
- static int
- tilepro_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
- bfd *input_bfd, asection *input_section,
- bfd_byte *contents, Elf_Internal_Rela *relocs,
- Elf_Internal_Sym *local_syms,
- asection **local_sections)
- {
- struct elf_link_hash_table *htab;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- bfd_vma *local_got_offsets;
- bfd_vma got_base;
- asection *sreloc;
- Elf_Internal_Rela *rel;
- Elf_Internal_Rela *relend;
- int num_relocs;
- htab = tilepro_elf_hash_table (info);
- BFD_ASSERT (htab != NULL);
- symtab_hdr = &elf_symtab_hdr (input_bfd);
- sym_hashes = elf_sym_hashes (input_bfd);
- local_got_offsets = elf_local_got_offsets (input_bfd);
- if (elf_hash_table (info)->hgot == NULL)
- got_base = 0;
- else
- got_base = elf_hash_table (info)->hgot->root.u.def.value;
- sreloc = elf_section_data (input_section)->sreloc;
- rel = relocs;
- num_relocs = input_section->reloc_count;
- relend = relocs + num_relocs;
- for (; rel < relend; rel++)
- {
- int r_type, tls_type;
- bool is_tls_iele, is_tls_le;
- reloc_howto_type *howto;
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
- tilepro_create_func create_func;
- asection *sec;
- bfd_vma relocation;
- bfd_reloc_status_type r;
- const char *name;
- bfd_vma off;
- bool is_plt = false;
- bool resolved_to_zero;
- bool unresolved_reloc;
- r_type = ELF32_R_TYPE (rel->r_info);
- if (r_type == R_TILEPRO_GNU_VTINHERIT
- || r_type == R_TILEPRO_GNU_VTENTRY)
- continue;
- if ((unsigned int)r_type >= NELEMS(tilepro_elf_howto_table))
- return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);
- howto = tilepro_elf_howto_table + r_type;
- /* This is a final link. */
- r_symndx = ELF32_R_SYM (rel->r_info);
- h = NULL;
- sym = NULL;
- sec = NULL;
- unresolved_reloc = false;
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
- }
- else
- {
- bool warned ATTRIBUTE_UNUSED;
- bool ignored ATTRIBUTE_UNUSED;
- RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
- r_symndx, symtab_hdr, sym_hashes,
- h, sec, relocation,
- unresolved_reloc, warned, ignored);
- if (warned)
- {
- /* To avoid generating warning messages about truncated
- relocations, set the relocation's address to be the same as
- the start of this section. */
- if (input_section->output_section != NULL)
- relocation = input_section->output_section->vma;
- else
- relocation = 0;
- }
- }
- if (sec != NULL && discarded_section (sec))
- RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
- rel, 1, relend, howto, 0, contents);
- if (bfd_link_relocatable (info))
- continue;
- if (h != NULL)
- name = h->root.root.string;
- else
- {
- name = (bfd_elf_string_from_elf_section
- (input_bfd, symtab_hdr->sh_link, sym->st_name));
- if (name == NULL || *name == '\0')
- name = bfd_section_name (sec);
- }
- switch (r_type)
- {
- case R_TILEPRO_TLS_GD_CALL:
- case R_TILEPRO_IMM8_X0_TLS_GD_ADD:
- case R_TILEPRO_IMM8_Y0_TLS_GD_ADD:
- case R_TILEPRO_IMM8_X1_TLS_GD_ADD:
- case R_TILEPRO_IMM8_Y1_TLS_GD_ADD:
- case R_TILEPRO_IMM16_X0_TLS_GD_HA:
- case R_TILEPRO_IMM16_X1_TLS_GD_HA:
- case R_TILEPRO_IMM16_X0_TLS_IE_HA:
- case R_TILEPRO_IMM16_X1_TLS_IE_HA:
- tls_type = GOT_UNKNOWN;
- if (h == NULL && local_got_offsets)
- tls_type =
- _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx];
- else if (h != NULL)
- tls_type = tilepro_elf_hash_entry(h)->tls_type;
- is_tls_iele = (bfd_link_executable (info) || tls_type == GOT_TLS_IE);
- is_tls_le = is_tls_iele && (bfd_link_executable (info)
- && (h == NULL || h->dynindx == -1));
- if (r_type == R_TILEPRO_TLS_GD_CALL)
- {
- if (is_tls_le)
- {
- /* GD -> LE */
- tilepro_replace_insn (contents + rel->r_offset,
- insn_mask_X1, insn_tls_le_move_X1);
- continue;
- }
- else if (is_tls_iele)
- {
- /* GD -> IE */
- tilepro_replace_insn (contents + rel->r_offset,
- insn_mask_X1, insn_tls_ie_lw_X1);
- continue;
- }
- /* GD -> GD */
- h = (struct elf_link_hash_entry *)
- bfd_link_hash_lookup (info->hash, "__tls_get_addr", false,
- false, true);
- BFD_ASSERT (h != NULL);
- r_type = R_TILEPRO_JOFFLONG_X1_PLT;
- howto = tilepro_elf_howto_table + r_type;
- }
- else if (r_type == R_TILEPRO_IMM16_X0_TLS_GD_HA
- || r_type == R_TILEPRO_IMM16_X0_TLS_IE_HA)
- {
- if (is_tls_le)
- tilepro_replace_insn (contents + rel->r_offset, srca_mask_X0,
- insn_tls_le_move_zero_X0X1);
- }
- else if (r_type == R_TILEPRO_IMM16_X1_TLS_GD_HA
- || r_type == R_TILEPRO_IMM16_X1_TLS_IE_HA)
- {
- if (is_tls_le)
- tilepro_replace_insn (contents + rel->r_offset, srca_mask_X1,
- insn_tls_le_move_zero_X0X1);
- }
- else
- {
- const bfd_byte *mask = NULL;
- const bfd_byte *add_insn = NULL;
- switch (r_type)
- {
- case R_TILEPRO_IMM8_X0_TLS_GD_ADD:
- add_insn = is_tls_iele ? insn_tls_ie_add_X0X1
- : insn_tls_gd_add_X0X1;
- mask = insn_mask_X0_no_dest_no_srca;
- break;
- case R_TILEPRO_IMM8_X1_TLS_GD_ADD:
- add_insn = is_tls_iele ? insn_tls_ie_add_X0X1
- : insn_tls_gd_add_X0X1;
- mask = insn_mask_X1_no_dest_no_srca;
- break;
- case R_TILEPRO_IMM8_Y0_TLS_GD_ADD:
- add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1
- : insn_tls_gd_add_Y0Y1;
- mask = insn_mask_Y0_no_dest_no_srca;
- break;
- case R_TILEPRO_IMM8_Y1_TLS_GD_ADD:
- add_insn = is_tls_iele ? insn_tls_ie_add_Y0Y1
- : insn_tls_gd_add_Y0Y1;
- mask = insn_mask_Y1_no_dest_no_srca;
- break;
- }
- tilepro_replace_insn (contents + rel->r_offset, mask, add_insn);
- continue;
- }
- break;
- case R_TILEPRO_TLS_IE_LOAD:
- if (bfd_link_executable (info) && (h == NULL || h->dynindx == -1))
- /* IE -> LE */
- tilepro_replace_insn (contents + rel->r_offset,
- insn_mask_X1_no_dest_no_srca,
- insn_tls_le_move_X1);
- else
- /* IE -> IE */
- tilepro_replace_insn (contents + rel->r_offset,
- insn_mask_X1_no_dest_no_srca,
- insn_tls_ie_lw_X1);
- continue;
- break;
- default:
- break;
- }
- resolved_to_zero = (h != NULL
- && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h));
- switch (r_type)
- {
- case R_TILEPRO_IMM16_X0_GOT:
- case R_TILEPRO_IMM16_X1_GOT:
- case R_TILEPRO_IMM16_X0_GOT_LO:
- case R_TILEPRO_IMM16_X1_GOT_LO:
- case R_TILEPRO_IMM16_X0_GOT_HI:
- case R_TILEPRO_IMM16_X1_GOT_HI:
- case R_TILEPRO_IMM16_X0_GOT_HA:
- case R_TILEPRO_IMM16_X1_GOT_HA:
- /* Relocation is to the entry for this symbol in the global
- offset table. */
- if (htab->sgot == NULL)
- abort ();
- if (h != NULL)
- {
- bool dyn;
- off = h->got.offset;
- BFD_ASSERT (off != (bfd_vma) -1);
- dyn = elf_hash_table (info)->dynamic_sections_created;
- if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
- bfd_link_pic (info),
- h)
- || (bfd_link_pic (info)
- && SYMBOL_REFERENCES_LOCAL (info, h)))
- {
- /* This is actually a static link, or it is a
- -Bsymbolic link and the symbol is defined
- locally, or the symbol was forced to be local
- because of a version file. We must initialize
- this entry in the global offset table. Since the
- offset must always be a multiple
- of 4 for 32-bit, we use the least significant bit
- to record whether we have initialized it already.
- When doing a dynamic link, we create a .rela.got
- relocation entry to initialize the value. This
- is done in the finish_dynamic_symbol routine. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- bfd_put_32 (output_bfd, relocation,
- htab->sgot->contents + off);
- h->got.offset |= 1;
- }
- }
- else
- unresolved_reloc = false;
- }
- else
- {
- BFD_ASSERT (local_got_offsets != NULL
- && local_got_offsets[r_symndx] != (bfd_vma) -1);
- off = local_got_offsets[r_symndx];
- /* The offset must always be a multiple of 4 on 32-bit.
- We use the least significant bit to record
- whether we have already processed this entry. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- if (bfd_link_pic (info))
- {
- asection *s;
- Elf_Internal_Rela outrel;
- /* We need to generate a R_TILEPRO_RELATIVE reloc
- for the dynamic linker. */
- s = htab->srelgot;
- BFD_ASSERT (s != NULL);
- outrel.r_offset = (htab->sgot->output_section->vma
- + htab->sgot->output_offset
- + off);
- outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE);
- outrel.r_addend = relocation;
- relocation = 0;
- tilepro_elf_append_rela_32 (output_bfd, s, &outrel);
- }
- bfd_put_32 (output_bfd, relocation,
- htab->sgot->contents + off);
- local_got_offsets[r_symndx] |= 1;
- }
- }
- relocation = off - got_base;
- break;
- case R_TILEPRO_JOFFLONG_X1_PLT:
- /* Relocation is to the entry for this symbol in the
- procedure linkage table. */
- BFD_ASSERT (h != NULL);
- if (h->plt.offset == (bfd_vma) -1 || htab->splt == NULL)
- {
- /* We didn't make a PLT entry for this symbol. This
- happens when statically linking PIC code, or when
- using -Bsymbolic. */
- break;
- }
- relocation = (htab->splt->output_section->vma
- + htab->splt->output_offset
- + h->plt.offset);
- unresolved_reloc = false;
- break;
- case R_TILEPRO_32_PCREL:
- case R_TILEPRO_16_PCREL:
- case R_TILEPRO_8_PCREL:
- case R_TILEPRO_IMM16_X0_PCREL:
- case R_TILEPRO_IMM16_X1_PCREL:
- case R_TILEPRO_IMM16_X0_LO_PCREL:
- case R_TILEPRO_IMM16_X1_LO_PCREL:
- case R_TILEPRO_IMM16_X0_HI_PCREL:
- case R_TILEPRO_IMM16_X1_HI_PCREL:
- case R_TILEPRO_IMM16_X0_HA_PCREL:
- case R_TILEPRO_IMM16_X1_HA_PCREL:
- if (h != NULL
- && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
- break;
- /* Fall through. */
- case R_TILEPRO_32:
- case R_TILEPRO_16:
- case R_TILEPRO_8:
- case R_TILEPRO_LO16:
- case R_TILEPRO_HI16:
- case R_TILEPRO_HA16:
- case R_TILEPRO_COPY:
- case R_TILEPRO_GLOB_DAT:
- case R_TILEPRO_JMP_SLOT:
- case R_TILEPRO_RELATIVE:
- case R_TILEPRO_BROFF_X1:
- case R_TILEPRO_JOFFLONG_X1:
- case R_TILEPRO_IMM8_X0:
- case R_TILEPRO_IMM8_Y0:
- case R_TILEPRO_IMM8_X1:
- case R_TILEPRO_IMM8_Y1:
- case R_TILEPRO_DEST_IMM8_X1:
- case R_TILEPRO_MT_IMM15_X1:
- case R_TILEPRO_MF_IMM15_X1:
- case R_TILEPRO_IMM16_X0:
- case R_TILEPRO_IMM16_X1:
- case R_TILEPRO_IMM16_X0_LO:
- case R_TILEPRO_IMM16_X1_LO:
- case R_TILEPRO_IMM16_X0_HI:
- case R_TILEPRO_IMM16_X1_HI:
- case R_TILEPRO_IMM16_X0_HA:
- case R_TILEPRO_IMM16_X1_HA:
- case R_TILEPRO_MMSTART_X0:
- case R_TILEPRO_MMEND_X0:
- case R_TILEPRO_MMSTART_X1:
- case R_TILEPRO_MMEND_X1:
- case R_TILEPRO_SHAMT_X0:
- case R_TILEPRO_SHAMT_X1:
- case R_TILEPRO_SHAMT_Y0:
- case R_TILEPRO_SHAMT_Y1:
- if ((input_section->flags & SEC_ALLOC) == 0)
- break;
- if ((bfd_link_pic (info)
- && (h == NULL
- || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- && !resolved_to_zero)
- || h->root.type != bfd_link_hash_undefweak)
- && (! howto->pc_relative
- || !SYMBOL_CALLS_LOCAL (info, h)))
- || (!bfd_link_pic (info)
- && h != NULL
- && h->dynindx != -1
- && !h->non_got_ref
- && ((h->def_dynamic
- && !h->def_regular)
- || h->root.type == bfd_link_hash_undefweak
- || h->root.type == bfd_link_hash_undefined)))
- {
- Elf_Internal_Rela outrel;
- bool skip, relocate = false;
- /* When generating a shared object, these relocations
- are copied into the output file to be resolved at run
- time. */
- BFD_ASSERT (sreloc != NULL);
- skip = false;
- outrel.r_offset =
- _bfd_elf_section_offset (output_bfd, info, input_section,
- rel->r_offset);
- if (outrel.r_offset == (bfd_vma) -1)
- skip = true;
- else if (outrel.r_offset == (bfd_vma) -2)
- skip = true, relocate = true;
- outrel.r_offset += (input_section->output_section->vma
- + input_section->output_offset);
- switch (r_type)
- {
- case R_TILEPRO_32_PCREL:
- case R_TILEPRO_16_PCREL:
- case R_TILEPRO_8_PCREL:
- /* If the symbol is not dynamic, we should not keep
- a dynamic relocation. But an .rela.* slot has been
- allocated for it, output R_TILEPRO_NONE.
- FIXME: Add code tracking needed dynamic relocs as
- e.g. i386 has. */
- if (h->dynindx == -1)
- skip = true, relocate = true;
- break;
- }
- if (skip)
- memset (&outrel, 0, sizeof outrel);
- /* h->dynindx may be -1 if the symbol was marked to
- become local. */
- else if (h != NULL &&
- h->dynindx != -1
- && (! is_plt
- || !bfd_link_pic (info)
- || !SYMBOLIC_BIND (info, h)
- || !h->def_regular))
- {
- BFD_ASSERT (h->dynindx != -1);
- outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
- outrel.r_addend = rel->r_addend;
- }
- else
- {
- if (r_type == R_TILEPRO_32)
- {
- outrel.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE);
- outrel.r_addend = relocation + rel->r_addend;
- }
- else
- {
- long indx;
- outrel.r_addend = relocation + rel->r_addend;
- if (is_plt)
- sec = htab->splt;
- if (bfd_is_abs_section (sec))
- indx = 0;
- else if (sec == NULL || sec->owner == NULL)
- {
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- else
- {
- asection *osec;
- /* We are turning this relocation into one
- against a section symbol. It would be
- proper to subtract the symbol's value,
- osec->vma, from the emitted reloc addend,
- but ld.so expects buggy relocs. */
- osec = sec->output_section;
- indx = elf_section_data (osec)->dynindx;
- if (indx == 0)
- {
- osec = htab->text_index_section;
- indx = elf_section_data (osec)->dynindx;
- }
- /* FIXME: we really should be able to link non-pic
- shared libraries. */
- if (indx == 0)
- {
- BFD_FAIL ();
- _bfd_error_handler
- (_("%pB: probably compiled without -fPIC?"),
- input_bfd);
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- }
- outrel.r_info = ELF32_R_INFO (indx, r_type);
- }
- }
- tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel);
- /* This reloc will be computed at runtime, so there's no
- need to do anything now. */
- if (! relocate)
- continue;
- }
- break;
- case R_TILEPRO_IMM16_X0_TLS_LE:
- case R_TILEPRO_IMM16_X1_TLS_LE:
- case R_TILEPRO_IMM16_X0_TLS_LE_LO:
- case R_TILEPRO_IMM16_X1_TLS_LE_LO:
- case R_TILEPRO_IMM16_X0_TLS_LE_HI:
- case R_TILEPRO_IMM16_X1_TLS_LE_HI:
- case R_TILEPRO_IMM16_X0_TLS_LE_HA:
- case R_TILEPRO_IMM16_X1_TLS_LE_HA:
- if (!bfd_link_executable (info))
- {
- Elf_Internal_Rela outrel;
- bool skip;
- BFD_ASSERT (sreloc != NULL);
- skip = false;
- outrel.r_offset =
- _bfd_elf_section_offset (output_bfd, info, input_section,
- rel->r_offset);
- if (outrel.r_offset == (bfd_vma) -1)
- skip = true;
- else if (outrel.r_offset == (bfd_vma) -2)
- skip = true;
- outrel.r_offset += (input_section->output_section->vma
- + input_section->output_offset);
- if (skip)
- memset (&outrel, 0, sizeof outrel);
- else
- {
- outrel.r_info = ELF32_R_INFO (0, r_type);
- outrel.r_addend = relocation - dtpoff_base (info)
- + rel->r_addend;
- }
- tilepro_elf_append_rela_32 (output_bfd, sreloc, &outrel);
- continue;
- }
- relocation = tpoff (info, relocation);
- break;
- case R_TILEPRO_IMM16_X0_TLS_GD:
- case R_TILEPRO_IMM16_X1_TLS_GD:
- case R_TILEPRO_IMM16_X0_TLS_GD_LO:
- case R_TILEPRO_IMM16_X1_TLS_GD_LO:
- case R_TILEPRO_IMM16_X0_TLS_GD_HI:
- case R_TILEPRO_IMM16_X1_TLS_GD_HI:
- case R_TILEPRO_IMM16_X0_TLS_GD_HA:
- case R_TILEPRO_IMM16_X1_TLS_GD_HA:
- case R_TILEPRO_IMM16_X0_TLS_IE:
- case R_TILEPRO_IMM16_X1_TLS_IE:
- case R_TILEPRO_IMM16_X0_TLS_IE_LO:
- case R_TILEPRO_IMM16_X1_TLS_IE_LO:
- case R_TILEPRO_IMM16_X0_TLS_IE_HI:
- case R_TILEPRO_IMM16_X1_TLS_IE_HI:
- case R_TILEPRO_IMM16_X0_TLS_IE_HA:
- case R_TILEPRO_IMM16_X1_TLS_IE_HA:
- r_type = tilepro_elf_tls_transition (info, r_type, h == NULL);
- tls_type = GOT_UNKNOWN;
- if (h == NULL && local_got_offsets)
- tls_type
- = _bfd_tilepro_elf_local_got_tls_type (input_bfd) [r_symndx];
- else if (h != NULL)
- {
- tls_type = tilepro_elf_hash_entry(h)->tls_type;
- if (bfd_link_executable (info)
- && h->dynindx == -1
- && tls_type == GOT_TLS_IE)
- r_type = tilepro_tls_translate_to_le (r_type);
- }
- if (tls_type == GOT_TLS_IE)
- r_type = tilepro_tls_translate_to_ie (r_type);
- if (r_type == R_TILEPRO_IMM16_X0_TLS_LE
- || r_type == R_TILEPRO_IMM16_X1_TLS_LE
- || r_type == R_TILEPRO_IMM16_X0_TLS_LE_LO
- || r_type == R_TILEPRO_IMM16_X1_TLS_LE_LO
- || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HI
- || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HI
- || r_type == R_TILEPRO_IMM16_X0_TLS_LE_HA
- || r_type == R_TILEPRO_IMM16_X1_TLS_LE_HA)
- {
- relocation = tpoff (info, relocation);
- break;
- }
- if (h != NULL)
- {
- off = h->got.offset;
- h->got.offset |= 1;
- }
- else
- {
- BFD_ASSERT (local_got_offsets != NULL);
- off = local_got_offsets[r_symndx];
- local_got_offsets[r_symndx] |= 1;
- }
- if (htab->sgot == NULL)
- abort ();
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- Elf_Internal_Rela outrel;
- int indx = 0;
- bool need_relocs = false;
- if (htab->srelgot == NULL)
- abort ();
- if (h != NULL)
- {
- bool dyn;
- dyn = htab->dynamic_sections_created;
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
- bfd_link_pic (info),
- h)
- && (!bfd_link_pic (info)
- || !SYMBOL_REFERENCES_LOCAL (info, h)))
- {
- indx = h->dynindx;
- }
- }
- /* The GOT entries have not been initialized yet. Do it
- now, and emit any relocations. */
- if ((bfd_link_pic (info) || indx != 0)
- && (h == NULL
- || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- || h->root.type != bfd_link_hash_undefweak))
- need_relocs = true;
- switch (r_type)
- {
- case R_TILEPRO_IMM16_X0_TLS_IE:
- case R_TILEPRO_IMM16_X1_TLS_IE:
- case R_TILEPRO_IMM16_X0_TLS_IE_LO:
- case R_TILEPRO_IMM16_X1_TLS_IE_LO:
- case R_TILEPRO_IMM16_X0_TLS_IE_HI:
- case R_TILEPRO_IMM16_X1_TLS_IE_HI:
- case R_TILEPRO_IMM16_X0_TLS_IE_HA:
- case R_TILEPRO_IMM16_X1_TLS_IE_HA:
- if (need_relocs) {
- bfd_put_32 (output_bfd, 0, htab->sgot->contents + off);
- outrel.r_offset = (htab->sgot->output_section->vma
- + htab->sgot->output_offset + off);
- outrel.r_addend = 0;
- if (indx == 0)
- outrel.r_addend = relocation - dtpoff_base (info);
- outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_TPOFF32);
- tilepro_elf_append_rela_32 (output_bfd, htab->srelgot,
- &outrel);
- } else {
- bfd_put_32 (output_bfd, tpoff (info, relocation),
- htab->sgot->contents + off);
- }
- break;
- case R_TILEPRO_IMM16_X0_TLS_GD:
- case R_TILEPRO_IMM16_X1_TLS_GD:
- case R_TILEPRO_IMM16_X0_TLS_GD_LO:
- case R_TILEPRO_IMM16_X1_TLS_GD_LO:
- case R_TILEPRO_IMM16_X0_TLS_GD_HI:
- case R_TILEPRO_IMM16_X1_TLS_GD_HI:
- case R_TILEPRO_IMM16_X0_TLS_GD_HA:
- case R_TILEPRO_IMM16_X1_TLS_GD_HA:
- if (need_relocs) {
- outrel.r_offset = (htab->sgot->output_section->vma
- + htab->sgot->output_offset + off);
- outrel.r_addend = 0;
- outrel.r_info = ELF32_R_INFO (indx, R_TILEPRO_TLS_DTPMOD32);
- bfd_put_32 (output_bfd, 0, htab->sgot->contents + off);
- tilepro_elf_append_rela_32 (output_bfd, htab->srelgot,
- &outrel);
- if (indx == 0)
- {
- BFD_ASSERT (! unresolved_reloc);
- bfd_put_32 (output_bfd,
- relocation - dtpoff_base (info),
- (htab->sgot->contents + off +
- TILEPRO_BYTES_PER_WORD));
- }
- else
- {
- bfd_put_32 (output_bfd, 0,
- (htab->sgot->contents + off +
- TILEPRO_BYTES_PER_WORD));
- outrel.r_info = ELF32_R_INFO (indx,
- R_TILEPRO_TLS_DTPOFF32);
- outrel.r_offset += TILEPRO_BYTES_PER_WORD;
- tilepro_elf_append_rela_32 (output_bfd,
- htab->srelgot, &outrel);
- }
- }
- else {
- /* If we are not emitting relocations for a
- general dynamic reference, then we must be in a
- static link or an executable link with the
- symbol binding locally. Mark it as belonging
- to module 1, the executable. */
- bfd_put_32 (output_bfd, 1,
- htab->sgot->contents + off );
- bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
- htab->sgot->contents + off +
- TILEPRO_BYTES_PER_WORD);
- }
- break;
- }
- }
- if (off >= (bfd_vma) -2)
- abort ();
- relocation = off - got_base;
- unresolved_reloc = false;
- howto = tilepro_elf_howto_table + r_type;
- break;
- default:
- break;
- }
- /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
- because such sections are not SEC_ALLOC and thus ld.so will
- not process them. */
- if (unresolved_reloc
- && !((input_section->flags & SEC_DEBUGGING) != 0
- && h->def_dynamic)
- && _bfd_elf_section_offset (output_bfd, info, input_section,
- rel->r_offset) != (bfd_vma) -1)
- _bfd_error_handler
- /* xgettext:c-format */
- (_("%pB(%pA+%#" PRIx64 "): "
- "unresolvable %s relocation against symbol `%s'"),
- input_bfd,
- input_section,
- (uint64_t) rel->r_offset,
- howto->name,
- h->root.root.string);
- r = bfd_reloc_continue;
- /* For the _HA types, we add 0x8000 so that if bit 15 is set,
- * we will increment bit 16. The howto->rightshift takes care
- * of the rest for us. */
- switch (r_type)
- {
- case R_TILEPRO_HA16:
- case R_TILEPRO_IMM16_X0_HA:
- case R_TILEPRO_IMM16_X1_HA:
- case R_TILEPRO_IMM16_X0_HA_PCREL:
- case R_TILEPRO_IMM16_X1_HA_PCREL:
- case R_TILEPRO_IMM16_X0_GOT_HA:
- case R_TILEPRO_IMM16_X1_GOT_HA:
- case R_TILEPRO_IMM16_X0_TLS_GD_HA:
- case R_TILEPRO_IMM16_X1_TLS_GD_HA:
- case R_TILEPRO_IMM16_X0_TLS_IE_HA:
- case R_TILEPRO_IMM16_X1_TLS_IE_HA:
- relocation += 0x8000;
- break;
- }
- /* Get the operand creation function, if any. */
- create_func = reloc_to_create_func[r_type];
- if (create_func == NULL)
- {
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset,
- relocation, rel->r_addend);
- }
- else
- {
- if (howto->pc_relative)
- {
- relocation -=
- input_section->output_section->vma + input_section->output_offset;
- if (howto->pcrel_offset)
- relocation -= rel->r_offset;
- }
- bfd_byte *data;
- /* Add the relocation addend if any to the final target value */
- relocation += rel->r_addend;
- /* Do basic range checking */
- r = bfd_check_overflow (howto->complain_on_overflow,
- howto->bitsize,
- howto->rightshift,
- 32,
- relocation);
- /*
- * Write the relocated value out into the raw section data.
- * Don't put a relocation out in the .rela section.
- */
- tilepro_bundle_bits mask = create_func(-1);
- tilepro_bundle_bits value = create_func(relocation >> howto->rightshift);
- /* Only touch bytes while the mask is not 0, so we
- don't write to out of bounds memory if this is actually
- a 16-bit switch instruction. */
- for (data = contents + rel->r_offset; mask != 0; data++)
- {
- bfd_byte byte_mask = (bfd_byte)mask;
- *data = (*data & ~byte_mask) | ((bfd_byte)value & byte_mask);
- mask >>= 8;
- value >>= 8;
- }
- }
- if (r != bfd_reloc_ok)
- {
- const char *msg = NULL;
- switch (r)
- {
- case bfd_reloc_overflow:
- (*info->callbacks->reloc_overflow)
- (info, (h ? &h->root : NULL), name, howto->name,
- (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
- break;
- case bfd_reloc_undefined:
- (*info->callbacks->undefined_symbol)
- (info, name, input_bfd, input_section, rel->r_offset, true);
- break;
- case bfd_reloc_outofrange:
- msg = _("internal error: out of range error");
- break;
- case bfd_reloc_notsupported:
- msg = _("internal error: unsupported relocation error");
- break;
- case bfd_reloc_dangerous:
- msg = _("internal error: dangerous relocation");
- break;
- default:
- msg = _("internal error: unknown error");
- break;
- }
- if (msg)
- (*info->callbacks->warning) (info, msg, name, input_bfd,
- input_section, rel->r_offset);
- }
- }
- return true;
- }
- /* Finish up dynamic symbol handling. We set the contents of various
- dynamic sections here. */
- static bool
- tilepro_elf_finish_dynamic_symbol (bfd *output_bfd,
- struct bfd_link_info *info,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
- {
- struct elf_link_hash_table *htab;
- htab = tilepro_elf_hash_table (info);
- BFD_ASSERT (htab != NULL);
- if (h->plt.offset != (bfd_vma) -1)
- {
- asection *splt;
- asection *srela;
- asection *sgotplt;
- Elf_Internal_Rela rela;
- bfd_byte *loc;
- bfd_vma r_offset;
- int rela_index;
- /* This symbol has an entry in the PLT. Set it up. */
- BFD_ASSERT (h->dynindx != -1);
- splt = htab->splt;
- srela = htab->srelplt;
- sgotplt = htab->sgotplt;
- if (splt == NULL || srela == NULL)
- abort ();
- /* Fill in the entry in the procedure linkage table. */
- rela_index = tilepro_plt_entry_build (splt, sgotplt, h->plt.offset,
- &r_offset);
- /* Fill in the entry in the global offset table, which initially points
- to the beginning of the plt. */
- bfd_put_32 (output_bfd, splt->output_section->vma + splt->output_offset,
- sgotplt->contents + r_offset);
- /* Fill in the entry in the .rela.plt section. */
- rela.r_offset = (sgotplt->output_section->vma
- + sgotplt->output_offset
- + r_offset);
- rela.r_addend = 0;
- rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_JMP_SLOT);
- loc = srela->contents + rela_index * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
- if (!h->def_regular)
- {
- /* Mark the symbol as undefined, rather than as defined in
- the .plt section. Leave the value alone. */
- sym->st_shndx = SHN_UNDEF;
- /* If the symbol is weak, we do need to clear the value.
- Otherwise, the PLT entry would provide a definition for
- the symbol even if the symbol wasn't defined anywhere,
- and so the symbol would never be NULL. */
- if (!h->ref_regular_nonweak)
- sym->st_value = 0;
- }
- }
- if (h->got.offset != (bfd_vma) -1
- && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_GD
- && tilepro_elf_hash_entry(h)->tls_type != GOT_TLS_IE)
- {
- asection *sgot;
- asection *srela;
- Elf_Internal_Rela rela;
- /* This symbol has an entry in the GOT. Set it up. */
- sgot = htab->sgot;
- srela = htab->srelgot;
- BFD_ASSERT (sgot != NULL && srela != NULL);
- rela.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + (h->got.offset &~ (bfd_vma) 1));
- /* If this is a -Bsymbolic link, and the symbol is defined
- locally, we just want to emit a RELATIVE reloc. Likewise if
- the symbol was forced to be local because of a version file.
- The entry in the global offset table will already have been
- initialized in the relocate_section function. */
- if (bfd_link_pic (info)
- && (info->symbolic || h->dynindx == -1)
- && h->def_regular)
- {
- asection *sec = h->root.u.def.section;
- rela.r_info = ELF32_R_INFO (0, R_TILEPRO_RELATIVE);
- rela.r_addend = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- else
- {
- rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_GLOB_DAT);
- rela.r_addend = 0;
- }
- bfd_put_32 (output_bfd, 0,
- sgot->contents + (h->got.offset & ~(bfd_vma) 1));
- tilepro_elf_append_rela_32 (output_bfd, srela, &rela);
- }
- if (h->needs_copy)
- {
- asection *s;
- Elf_Internal_Rela rela;
- /* This symbols needs a copy reloc. Set it up. */
- BFD_ASSERT (h->dynindx != -1);
- rela.r_offset = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- rela.r_info = ELF32_R_INFO (h->dynindx, R_TILEPRO_COPY);
- rela.r_addend = 0;
- if (h->root.u.def.section == htab->sdynrelro)
- s = htab->sreldynrelro;
- else
- s = htab->srelbss;
- tilepro_elf_append_rela_32 (output_bfd, s, &rela);
- }
- /* Mark some specially defined symbols as absolute. */
- if (h == htab->hdynamic
- || (h == htab->hgot || h == htab->hplt))
- sym->st_shndx = SHN_ABS;
- return true;
- }
- /* Finish up the dynamic sections. */
- static bool
- tilepro_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
- bfd *dynobj, asection *sdyn,
- asection *splt ATTRIBUTE_UNUSED)
- {
- Elf32_External_Dyn *dyncon, *dynconend;
- struct elf_link_hash_table *htab;
- htab = tilepro_elf_hash_table (info);
- BFD_ASSERT (htab != NULL);
- dyncon = (Elf32_External_Dyn *) sdyn->contents;
- dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
- for (; dyncon < dynconend; dyncon++)
- {
- Elf_Internal_Dyn dyn;
- asection *s;
- bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
- switch (dyn.d_tag)
- {
- case DT_PLTGOT:
- s = htab->sgotplt;
- dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
- break;
- case DT_JMPREL:
- s = htab->srelplt;
- dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
- break;
- case DT_PLTRELSZ:
- s = htab->srelplt;
- dyn.d_un.d_val = s->size;
- break;
- default:
- continue;
- }
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
- }
- return true;
- }
- static bool
- tilepro_elf_finish_dynamic_sections (bfd *output_bfd,
- struct bfd_link_info *info)
- {
- bfd *dynobj;
- asection *sdyn;
- struct elf_link_hash_table *htab;
- htab = tilepro_elf_hash_table (info);
- BFD_ASSERT (htab != NULL);
- dynobj = htab->dynobj;
- sdyn = bfd_get_linker_section (dynobj, ".dynamic");
- if (elf_hash_table (info)->dynamic_sections_created)
- {
- asection *splt;
- bool ret;
- splt = htab->splt;
- BFD_ASSERT (splt != NULL && sdyn != NULL);
- ret = tilepro_finish_dyn (output_bfd, info, dynobj, sdyn, splt);
- if (!ret)
- return ret;
- /* Fill in the first entry in the procedure linkage table. */
- if (splt->size > 0)
- {
- memcpy (splt->contents, tilepro_plt0_entry, PLT_HEADER_SIZE);
- memset (splt->contents + PLT_HEADER_SIZE, 0,
- PLT_ENTRY_SIZE - PLT_HEADER_SIZE);
- }
- if (elf_section_data (splt->output_section) != NULL)
- elf_section_data (splt->output_section)->this_hdr.sh_entsize
- = PLT_ENTRY_SIZE;
- }
- if (htab->sgotplt)
- {
- if (bfd_is_abs_section (htab->sgotplt->output_section))
- {
- _bfd_error_handler
- (_("discarded output section: `%pA'"), htab->sgotplt);
- return false;
- }
- if (htab->sgotplt->size > 0)
- {
- /* Write the first two entries in .got.plt, needed for the dynamic
- linker. */
- bfd_put_32 (output_bfd, (bfd_vma) -1,
- htab->sgotplt->contents);
- bfd_put_32 (output_bfd, (bfd_vma) 0,
- htab->sgotplt->contents + GOT_ENTRY_SIZE);
- }
- elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize
- = GOT_ENTRY_SIZE;
- }
- if (htab->sgot)
- {
- if (htab->sgot->size > 0)
- {
- /* Set the first entry in the global offset table to the address of
- the dynamic section. */
- bfd_vma val = (sdyn ?
- sdyn->output_section->vma + sdyn->output_offset :
- 0);
- bfd_put_32 (output_bfd, val, htab->sgot->contents);
- }
- elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize
- = GOT_ENTRY_SIZE;
- }
- return true;
- }
- /* Return address for Ith PLT stub in section PLT, for relocation REL
- or (bfd_vma) -1 if it should not be included. */
- static bfd_vma
- tilepro_elf_plt_sym_val (bfd_vma i, const asection *plt,
- const arelent *rel ATTRIBUTE_UNUSED)
- {
- return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
- }
- static enum elf_reloc_type_class
- tilepro_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
- const asection *rel_sec ATTRIBUTE_UNUSED,
- const Elf_Internal_Rela *rela)
- {
- switch ((int) ELF32_R_TYPE (rela->r_info))
- {
- case R_TILEPRO_RELATIVE:
- return reloc_class_relative;
- case R_TILEPRO_JMP_SLOT:
- return reloc_class_plt;
- case R_TILEPRO_COPY:
- return reloc_class_copy;
- default:
- return reloc_class_normal;
- }
- }
- static int
- tilepro_additional_program_headers (bfd *abfd,
- struct bfd_link_info *info ATTRIBUTE_UNUSED)
- {
- /* Each .intrpt section specified by the user adds another PT_LOAD
- header since the sections are discontiguous. */
- static const char intrpt_sections[4][9] =
- {
- ".intrpt0", ".intrpt1", ".intrpt2", ".intrpt3"
- };
- int count = 0;
- int i;
- for (i = 0; i < 4; i++)
- {
- asection *sec = bfd_get_section_by_name (abfd, intrpt_sections[i]);
- if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
- ++count;
- }
- /* Add four "padding" headers in to leave room in case a custom linker
- script does something fancy. Otherwise ld complains that it ran
- out of program headers and refuses to link. */
- count += 4;
- return count;
- }
- #define ELF_ARCH bfd_arch_tilepro
- #define ELF_TARGET_ID TILEPRO_ELF_DATA
- #define ELF_MACHINE_CODE EM_TILEPRO
- #define ELF_MAXPAGESIZE 0x10000
- #define ELF_COMMONPAGESIZE 0x10000
- #define TARGET_LITTLE_SYM tilepro_elf32_vec
- #define TARGET_LITTLE_NAME "elf32-tilepro"
- #define elf_backend_reloc_type_class tilepro_reloc_type_class
- #define bfd_elf32_bfd_reloc_name_lookup tilepro_reloc_name_lookup
- #define bfd_elf32_bfd_link_hash_table_create tilepro_elf_link_hash_table_create
- #define bfd_elf32_bfd_reloc_type_lookup tilepro_reloc_type_lookup
- #define elf_backend_copy_indirect_symbol tilepro_elf_copy_indirect_symbol
- #define elf_backend_create_dynamic_sections tilepro_elf_create_dynamic_sections
- #define elf_backend_check_relocs tilepro_elf_check_relocs
- #define elf_backend_adjust_dynamic_symbol tilepro_elf_adjust_dynamic_symbol
- #define elf_backend_omit_section_dynsym tilepro_elf_omit_section_dynsym
- #define elf_backend_size_dynamic_sections tilepro_elf_size_dynamic_sections
- #define elf_backend_relocate_section tilepro_elf_relocate_section
- #define elf_backend_finish_dynamic_symbol tilepro_elf_finish_dynamic_symbol
- #define elf_backend_finish_dynamic_sections tilepro_elf_finish_dynamic_sections
- #define elf_backend_gc_mark_hook tilepro_elf_gc_mark_hook
- #define elf_backend_plt_sym_val tilepro_elf_plt_sym_val
- #define elf_info_to_howto_rel NULL
- #define elf_info_to_howto tilepro_info_to_howto_rela
- #define elf_backend_grok_prstatus tilepro_elf_grok_prstatus
- #define elf_backend_grok_psinfo tilepro_elf_grok_psinfo
- #define elf_backend_additional_program_headers tilepro_additional_program_headers
- #define bfd_elf32_mkobject tilepro_elf_mkobject
- #define elf_backend_init_index_section _bfd_elf_init_1_index_section
- #define elf_backend_can_gc_sections 1
- #define elf_backend_can_refcount 1
- #define elf_backend_want_got_plt 1
- #define elf_backend_plt_readonly 1
- /* Align PLT mod 64 byte L2 line size. */
- #define elf_backend_plt_alignment 6
- #define elf_backend_want_plt_sym 1
- #define elf_backend_got_header_size GOT_ENTRY_SIZE
- #define elf_backend_want_dynrelro 1
- #define elf_backend_rela_normal 1
- #define elf_backend_default_execstack 0
- #include "elf32-target.h"
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