elf64-mips.c

基于4个mips核的noc设计

	 false),		/* pcrel_offset */

  /* A 6 bit shift field.  */
  /* FIXME: This is not handled correctly; a special function is
     needed to put the most significant bit in the right place.  */
  HOWTO (R_MIPS_SHIFT6,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 6,			/* bitsize */
	 false,			/* pc_relative */
	 6,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_SHIFT6",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x000007c4,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 64 bit relocation.  */
  HOWTO (R_MIPS_64,		/* type */
	 0,			/* rightshift */
	 4,			/* size (0 = byte, 1 = short, 2 = long) */
	 64,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_64",		/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 MINUS_ONE,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Displacement in the global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_DISP,	/* type */
	 0,			/* rightshift */
	 2,			/* 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_MIPS_GOT_DISP",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Displacement to page pointer in the global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_PAGE,	/* type */
	 0,			/* rightshift */
	 2,			/* 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_MIPS_GOT_PAGE",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Offset from page pointer in the global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_OFST,	/* type */
	 0,			/* rightshift */
	 2,			/* 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_MIPS_GOT_OFST",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* High 16 bits of displacement in global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_HI16,	/* type */
	 0,			/* rightshift */
	 2,			/* 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_MIPS_GOT_HI16",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Low 16 bits of displacement in global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_LO16,	/* type */
	 0,			/* rightshift */
	 2,			/* 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_MIPS_GOT_LO16",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 64 bit substraction.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_SUB,		/* type */
	 0,			/* rightshift */
	 4,			/* size (0 = byte, 1 = short, 2 = long) */
	 64,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_SUB",		/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 MINUS_ONE,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Insert the addend as an instruction.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_INSERT_A,	/* 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_MIPS_INSERT_A",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  /* Insert the addend as an instruction, and change all relocations
     to refer to the old instruction at the address.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_INSERT_B,	/* 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_MIPS_INSERT_B",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  /* Delete a 32 bit instruction.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_DELETE,		/* 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_MIPS_DELETE",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  /* Get the higher value of a 64 bit addend.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_HIGHER,		/* type */
	 0,			/* rightshift */
	 2,			/* 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_MIPS_HIGHER",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Get the highest value of a 64 bit addend.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_HIGHEST,	/* type */
	 0,			/* rightshift */
	 2,			/* 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_MIPS_HIGHEST",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* High 16 bits of displacement in global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_CALL_HI16,	/* type */
	 0,			/* rightshift */
	 2,			/* 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_MIPS_CALL_HI16",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Low 16 bits of displacement in global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_CALL_LO16,	/* type */
	 0,			/* rightshift */
	 2,			/* 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_MIPS_CALL_LO16",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* I'm not sure what the remaining relocs are, but they are defined
     on Irix 6.  */

  HOWTO (R_MIPS_SCN_DISP,	/* 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_MIPS_SCN_DISP",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  HOWTO (R_MIPS_REL16,		/* 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_MIPS_REL16",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  HOWTO (R_MIPS_ADD_IMMEDIATE,	/* 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_MIPS_ADD_IMMEDIATE", /* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  HOWTO (R_MIPS_PJUMP,		/* 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_MIPS_PJUMP",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  HOWTO (R_MIPS_RELGOT,		/* 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_MIPS_RELGOT",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  /* Protected jump conversion.  This is an optimization hint.  No
     relocation is required for correctness.  */
  HOWTO (R_MIPS_JALR,	        /* 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_MIPS_JALR",	        /* name */
	 false,			/* partial_inplace */
	 0x00000000,		/* src_mask */
	 0x00000000,		/* dst_mask */
	 false),		/* pcrel_offset */
};

/* Swap in a MIPS 64-bit Rel reloc.  */

static void
mips_elf64_swap_reloc_in (abfd, src, dst)
     bfd *abfd;
     const Elf64_Mips_External_Rel *src;
     Elf64_Mips_Internal_Rel *dst;
{
  dst->r_offset = bfd_h_get_64 (abfd, (bfd_byte *) src->r_offset);
  dst->r_sym = bfd_h_get_32 (abfd, (bfd_byte *) src->r_sym);
  dst->r_ssym = bfd_h_get_8 (abfd, (bfd_byte *) src->r_ssym);
  dst->r_type3 = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type3);
  dst->r_type2 = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type2);
  dst->r_type = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type);
}

/* Swap in a MIPS 64-bit Rela reloc.  */

static void
mips_elf64_swap_reloca_in (abfd, src, dst)
     bfd *abfd;
     const Elf64_Mips_External_Rela *src;
     Elf64_Mips_Internal_Rela *dst;
{
  dst->r_offset = bfd_h_get_64 (abfd, (bfd_byte *) src->r_offset);
  dst->r_sym = bfd_h_get_32 (abfd, (bfd_byte *) src->r_sym);
  dst->r_ssym = bfd_h_get_8 (abfd, (bfd_byte *) src->r_ssym);
  dst->r_type3 = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type3);
  dst->r_type2 = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type2);
  dst->r_type = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type);
  dst->r_addend = bfd_h_get_signed_64 (abfd, (bfd_byte *) src->r_addend);
}

/* Swap out a MIPS 64-bit Rel reloc.  */

static void
mips_elf64_swap_reloc_out (abfd, src, dst)
     bfd *abfd;
     const Elf64_Mips_Internal_Rel *src;
     Elf64_Mips_External_Rel *dst;
{
  bfd_h_put_64 (abfd, src->r_offset, (bfd_byte *) dst->r_offset);
  bfd_h_put_32 (abfd, src->r_sym, (bfd_byte *) dst->r_sym);
  bfd_h_put_8 (abfd, src->r_ssym, (bfd_byte *) dst->r_ssym);
  bfd_h_put_8 (abfd, src->r_type3, (bfd_byte *) dst->r_type3);
  bfd_h_put_8 (abfd, src->r_type2, (bfd_byte *) dst->r_type2);
  bfd_h_put_8 (abfd, src->r_type, (bfd_byte *) dst->r_type);
}

/* Swap out a MIPS 64-bit Rela reloc.  */

static void
mips_elf64_swap_reloca_out (abfd, src, dst)
     bfd *abfd;
     const Elf64_Mips_Internal_Rela *src;
     Elf64_Mips_External_Rela *dst;
{
  bfd_h_put_64 (abfd, src->r_offset, (bfd_byte *) dst->r_offset);
  bfd_h_put_32 (abfd, src->r_sym, (bfd_byte *) dst->r_sym);
  bfd_h_put_8 (abfd, src->r_ssym, (bfd_byte *) dst->r_ssym);
  bfd_h_put_8 (abfd, src->r_type3, (bfd_byte *) dst->r_type3);
  bfd_h_put_8 (abfd, src->r_type2, (bfd_byte *) dst->r_type2);
  bfd_h_put_8 (abfd, src->r_type, (bfd_byte *) dst->r_type);
  bfd_h_put_64 (abfd, src->r_addend, (bfd_byte *) dst->r_addend);
}

/* Swap in a MIPS 64-bit Rel reloc.  */

static void
mips_elf64_be_swap_reloc_in (abfd, src, dst)
     bfd *abfd;
     const bfd_byte *src;
     Elf_Internal_Rel *dst;
{
  Elf64_Mips_Internal_Rel mirel;

  mips_elf64_swap_reloc_in (abfd,
			    (const Elf64_Mips_External_Rel *) src,
			    &mirel);

  dst[0].r_offset = mirel.r_offset;
  dst[0].r_info = ELF32_R_INFO (mirel.r_sym, mirel.r_type);
  dst[1].r_offset = mirel.r_offset;
  dst[1].r_info = ELF32_R_INFO (mirel.r_ssym, mirel.r_type2);
  dst[2].r_offset = mirel.r_offset;
  dst[2].r_info = ELF32_R_INFO (STN_UNDEF, mirel.r_type3);
}

/* Swap in a MIPS 64-bit Rela reloc.  */

static void
mips_elf64_be_swap_reloca_in (abfd, src, dst)
     bfd *abfd;
     const bfd_byte *src;
     Elf_Internal_Rela *dst;
{
  Elf64_Mips_Internal_Rela mirela;

  mips_elf64_swap_reloca_in (abfd,