coff-rs6000.c

来自「基于4个mips核的noc设计」· C语言 代码 · 共 2,164 行 · 第 1/5 页

  HOWTO (1,	                /* type */
	 0,	                /* rightshift */
	 -2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 32,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_NEG",               /* name */
	 true,	                /* partial_inplace */
	 0xffffffff,            /* src_mask */
	 0xffffffff,            /* dst_mask */
	 false),                /* pcrel_offset */

  /* 32 bit PC relative relocation.  */
  HOWTO (2,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 32,	                /* bitsize */
	 true,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_REL",               /* name */
	 true,	                /* partial_inplace */
	 0xffffffff,            /* src_mask */
	 0xffffffff,            /* dst_mask */
	 false),                /* pcrel_offset */

  /* 16 bit TOC relative relocation.  */
  HOWTO (3,	                /* type */
	 0,	                /* rightshift */
	 1,	                /* size (0 = byte, 1 = short, 2 = long) */
	 16,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_TOC",               /* name */
	 true,	                /* partial_inplace */
	 0xffff,	        /* src_mask */
	 0xffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  /* I don't really know what this is.  */
  HOWTO (4,	                /* type */
	 1,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 32,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_RTB",               /* name */
	 true,	                /* partial_inplace */
	 0xffffffff,	        /* src_mask */
	 0xffffffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  /* External TOC relative symbol.  */
  HOWTO (5,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 16,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_GL",                /* name */
	 true,	                /* partial_inplace */
	 0xffff,	        /* src_mask */
	 0xffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  /* Local TOC relative symbol.  */
  HOWTO (6,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 16,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_TCL",               /* name */
	 true,	                /* partial_inplace */
	 0xffff,	        /* src_mask */
	 0xffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  EMPTY_HOWTO (7),

  /* Non modifiable absolute branch.  */
  HOWTO (8,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 26,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_BA",                /* name */
	 true,	                /* partial_inplace */
	 0x3fffffc,	        /* src_mask */
	 0x3fffffc,        	/* dst_mask */
	 false),                /* pcrel_offset */

  EMPTY_HOWTO (9),

  /* Non modifiable relative branch.  */
  HOWTO (0xa,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 26,	                /* bitsize */
	 true,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_BR",                /* name */
	 true,	                /* partial_inplace */
	 0x3fffffc,	        /* src_mask */
	 0x3fffffc,        	/* dst_mask */
	 false),                /* pcrel_offset */

  EMPTY_HOWTO (0xb),

  /* Indirect load.  */
  HOWTO (0xc,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 16,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_RL",                /* name */
	 true,	                /* partial_inplace */
	 0xffff,	        /* src_mask */
	 0xffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  /* Load address.  */
  HOWTO (0xd,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 16,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_RLA",               /* name */
	 true,	                /* partial_inplace */
	 0xffff,	        /* src_mask */
	 0xffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  EMPTY_HOWTO (0xe),

  /* Non-relocating reference.  */
  HOWTO (0xf,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 32,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_REF",               /* name */
	 false,	                /* partial_inplace */
	 0,		        /* src_mask */
	 0,     	   	/* dst_mask */
	 false),                /* pcrel_offset */

  EMPTY_HOWTO (0x10),
  EMPTY_HOWTO (0x11),

  /* TOC relative indirect load.  */
  HOWTO (0x12,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 16,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_TRL",               /* name */
	 true,	                /* partial_inplace */
	 0xffff,	        /* src_mask */
	 0xffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  /* TOC relative load address.  */
  HOWTO (0x13,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 16,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_TRLA",              /* name */
	 true,	                /* partial_inplace */
	 0xffff,	        /* src_mask */
	 0xffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  /* Modifiable relative branch.  */
  HOWTO (0x14,	                /* type */
	 1,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 32,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_RRTBI",             /* name */
	 true,	                /* partial_inplace */
	 0xffffffff,	        /* src_mask */
	 0xffffffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  /* Modifiable absolute branch.  */
  HOWTO (0x15,	                /* type */
	 1,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 32,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_RRTBA",             /* name */
	 true,	                /* partial_inplace */
	 0xffffffff,	        /* src_mask */
	 0xffffffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  /* Modifiable call absolute indirect.  */
  HOWTO (0x16,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 16,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_CAI",               /* name */
	 true,	                /* partial_inplace */
	 0xffff,	        /* src_mask */
	 0xffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  /* Modifiable call relative.  */
  HOWTO (0x17,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 16,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_CREL",              /* name */
	 true,	                /* partial_inplace */
	 0xffff,	        /* src_mask */
	 0xffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  /* Modifiable branch absolute.  */
  HOWTO (0x18,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 26,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_RBA",               /* name */
	 true,	                /* partial_inplace */
	 0xffff,	        /* src_mask */
	 0xffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  /* Modifiable branch absolute.  */
  HOWTO (0x19,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 32,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_RBAC",              /* name */
	 true,	                /* partial_inplace */
	 0xffff,	        /* src_mask */
	 0xffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  /* Modifiable branch relative.  */
  HOWTO (0x1a,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 26,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_RBR",               /* name */
	 true,	                /* partial_inplace */
	 0xffff,	        /* src_mask */
	 0xffff,        	/* dst_mask */
	 false),                /* pcrel_offset */

  /* Modifiable branch absolute.  */
  HOWTO (0x1b,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 16,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_RBRC",              /* name */
	 true,	                /* partial_inplace */
	 0xffff,	        /* src_mask */
	 0xffff,        	/* dst_mask */
	 false),                /* pcrel_offset */
  HOWTO (0,                     /* type */
         0,                     /* rightshift */
         4,                     /* size (0 = byte, 1 = short, 2 = long) */
         64,                    /* bitsize */
         false,                 /* pc_relative */
         0,                     /* bitpos */
         complain_overflow_bitfield, /* complain_on_overflow */
         0,                     /* special_function */
         "R_POS",               /* name */
         true,                  /* partial_inplace */
         MINUS_ONE,             /* src_mask */
	 MINUS_ONE,             /* dst_mask */
	 false)                 /* pcrel_offset */

};

/* These are the first two like the above but for 16-bit relocs.  */
static reloc_howto_type xcoff_howto_table_16[] =
{
  /* Standard 16 bit relocation.  */
  HOWTO (0,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 16,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_POS_16",            /* name */
	 true,	                /* partial_inplace */
	 0xffffffff,            /* src_mask */
	 0xffffffff,            /* dst_mask */
	 false),                /* pcrel_offset */

  /* 16 bit relocation, but store negative value.  */
  HOWTO (1,	                /* type */
	 0,	                /* rightshift */
	 -2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 16,	                /* bitsize */
	 false,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_NEG_16",            /* name */
	 true,	                /* partial_inplace */
	 0xffffffff,            /* src_mask */
	 0xffffffff,            /* dst_mask */
	 false),                /* pcrel_offset */

  /* 16 bit PC relative relocation.  */
  HOWTO (2,	                /* type */
	 0,	                /* rightshift */
	 2,	                /* size (0 = byte, 1 = short, 2 = long) */
	 32,	                /* bitsize */
	 true,	                /* pc_relative */
	 0,	                /* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 0,		        /* special_function */
	 "R_REL_16",            /* name */
	 true,	                /* partial_inplace */
	 0xffffffff,            /* src_mask */
	 0xffffffff,            /* dst_mask */
	 false)                /* pcrel_offset */
  };

void
_bfd_xcoff_rtype2howto (relent, internal)
     arelent *relent;
     struct internal_reloc *internal;
{
  relent->howto = xcoff_howto_table + internal->r_type;

  if (relent->howto->bitsize != ((unsigned int) internal->r_size & 0x1f) + 1
      && (internal->r_type
	  < sizeof (xcoff_howto_table_16)/sizeof (xcoff_howto_table_16[0])))
    relent->howto = xcoff_howto_table_16 + internal->r_type;

  /* The r_size field of an XCOFF reloc encodes the bitsize of the
     relocation, as well as indicating whether it is signed or not.
     Doublecheck that the relocation information gathered from the
     type matches this information.  The bitsize is not significant
     for R_REF relocs.  */
  if (relent->howto->dst_mask != 0
      && (relent->howto->bitsize
	  != ((unsigned int) internal->r_size & 0x3f) + 1))
    abort ();
#if 0
  if ((internal->r_size & 0x80) != 0
      ? (relent->howto->complain_on_overflow != complain_overflow_signed)
      : (relent->howto->complain_on_overflow != complain_overflow_bitfield))
    abort ();
#endif
}

reloc_howto_type *
_bfd_xcoff_reloc_type_lookup (abfd, code)
     bfd *abfd ATTRIBUTE_UNUSED;
     bfd_reloc_code_real_type code;
{
  switch (code)
    {
    case BFD_RELOC_PPC_B26:
      return &xcoff_howto_table[0xa];
    case BFD_RELOC_PPC_BA26:
      return &xcoff_howto_table[8];
    case BFD_RELOC_PPC_TOC16:
      return &xcoff_howto_table[3];
    case BFD_RELOC_32:
    case BFD_RELOC_CTOR: