home *** CD-ROM | disk | FTP | other *** search
- /* PowerPC-specific support for 32-bit ELF
- Copyright 1994, 1995 Free Software Foundation, Inc.
- Written by Ian Lance Taylor, Cygnus Support.
-
- 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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* This file is based on a preliminary PowerPC ELF ABI. The
- information may not match the final PowerPC ELF ABI. It includes
- suggestions from the in-progress Embedded PowerPC ABI, and that
- information may also not match. */
-
- #include "bfd.h"
- #include "sysdep.h"
- #include "libbfd.h"
- #include "libelf.h"
-
- static bfd_reloc_status_type ppc_elf_unsupported_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
- static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
- static bfd_reloc_status_type ppc_elf_got16_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
- static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
- PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
- static void powerpc_info_to_howto
- PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst));
-
- #define USE_RELA
-
- enum reloc_type
- {
- R_PPC_NONE = 0, /* 0 */
- R_PPC_ADDR32, /* 1 */
- R_PPC_ADDR24, /* 2 */
- R_PPC_ADDR16, /* 3 */
- R_PPC_ADDR16_LO, /* 4 */
- R_PPC_ADDR16_HI, /* 5 */
- R_PPC_ADDR16_HA, /* 6 */
- R_PPC_ADDR14, /* 7 */
- R_PPC_ADDR14_BRTAKEN, /* 8 */
- R_PPC_ADDR14_BRNTAKEN, /* 9 */
- R_PPC_REL24, /* 10 */
- R_PPC_REL14, /* 11 */
- R_PPC_REL14_BRTAKEN, /* 12 */
- R_PPC_REL14_BRNTAKEN, /* 13 */
- R_PPC_GOT16, /* 14 */
- R_PPC_GOT16_LO, /* 15 */
- R_PPC_GOT16_HI, /* 16 */
- R_PPC_GOT16_HA, /* 17 */
- R_PPC_PLT24, /* 18 */
- R_PPC_COPY, /* 19 */
- R_PPC_GLOB_DAT, /* 20 -- not in final System V spec */
- R_PPC_JMP_SLOT, /* 21 */
- R_PPC_RELATIVE, /* 22 */
- R_PPC_LOCAL24PC, /* 23 */
- R_PPC_UADDR32, /* 24 */
- R_PPC_UADDR16, /* 25 */
- R_PPC_REL32, /* 26 */
- R_PPC_PLT32, /* 27 */
- R_PPC_PLTREL32, /* 28 */
- R_PPC_PLT16_LO, /* 29 */
- R_PPC_PLT16_HI, /* 30 */
- R_PPC_PLT16_HA, /* 31 */
- R_PPC_SDAREL, /* 32 */
-
- /* Relocations added by Sun. */
- R_PPC_SECTOFF, /* 33 */
- R_PPC_SECTOFF_LO, /* 34 */
- R_PPC_SECTOFF_HI, /* 35 */
- R_PPC_SECTOFF_HA, /* 36 */
-
- /* The remaining relocs are from the Embedded ELF ABI, and are not
- in the SVR4 ELF ABI. */
- R_PPC_EMB_NADDR32 = 101, /* 101 */
- R_PPC_EMB_NADDR16, /* 102 */
- R_PPC_EMB_NADDR16_LO, /* 103 */
- R_PPC_EMB_NADDR16_HI, /* 104 */
- R_PPC_EMB_NADDR16_HA, /* 105 */
- R_PPC_EMB_SDAI16, /* 106 */
- R_PPC_EMB_SDA2I16, /* 107 */
- R_PPC_EMB_SDA2REL, /* 108 */
- R_PPC_EMB_SDA21, /* 109 */
- R_PPC_EMB_MRKREF, /* 110 */
- R_PPC_EMB_RELSEC16, /* 111 */
- R_PPC_EMB_RELST_LO, /* 112 */
- R_PPC_EMB_RELST_HI, /* 113 */
- R_PPC_EMB_RELST_HA, /* 114 */
- R_PPC_EMB_BIT_FLD, /* 115 */
- R_PPC_EMB_RELSDA, /* 116 */
- R_PPC_max
- };
-
- static reloc_howto_type elf_powerpc_howto_table[] =
- {
- /* This reloc does nothing. */
- HOWTO (R_PPC_NONE, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_NONE", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
-
- /* A standard 32 bit relocation. */
- HOWTO (R_PPC_ADDR32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_ADDR32", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* An absolute 26 bit branch; the lower two bits must be zero.
- FIXME: we don't check that, we just clear them. */
- HOWTO (R_PPC_ADDR24, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 26, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_ADDR24", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0x3fffffc, /* dst_mask */
- false), /* pcrel_offset */
-
- /* A standard 16 bit relocation. */
- HOWTO (R_PPC_ADDR16, /* 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_PPC_ADDR16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* A 16 bit relocation without overflow. */
- HOWTO (R_PPC_ADDR16_LO, /* 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_PPC_ADDR16_LO", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* The high order 16 bits of an address. */
- HOWTO (R_PPC_ADDR16_HI, /* 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_PPC_ADDR16_HI", /* 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_PPC_ADDR16_HA, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc_elf_addr16_ha_reloc, /* special_function */
- "R_PPC_ADDR16_HA", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* An absolute 16 bit branch; the lower two bits must be zero.
- FIXME: we don't check that, we just clear them. */
- HOWTO (R_PPC_ADDR14, /* 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_PPC_ADDR14", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- false), /* pcrel_offset */
-
- /* An absolute 16 bit branch, for which bit 10 should be set to
- indicate that the branch is expected to be taken. The lower two
- bits must be zero. */
- HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_ADDR14_BRTAKEN",/* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- false), /* pcrel_offset */
-
- /* An absolute 16 bit branch, for which bit 10 should be set to
- indicate that the branch is not expected to be taken. The lower
- two bits must be zero. */
- HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_ADDR14_BRNTAKEN",/* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- false), /* pcrel_offset */
-
- /* A relative 26 bit branch; the lower two bits must be zero. */
- HOWTO (R_PPC_REL24, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 26, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_REL24", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0x3fffffc, /* dst_mask */
- true), /* pcrel_offset */
-
- /* A relative 16 bit branch; the lower two bits must be zero. */
- HOWTO (R_PPC_REL14, /* type */
- 0, /* rightshift */
- 2, /* 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_PPC_REL14", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- true), /* pcrel_offset */
-
- /* A relative 16 bit branch. Bit 10 should be set to indicate that
- the branch is expected to be taken. The lower two bits must be
- zero. */
- HOWTO (R_PPC_REL14_BRTAKEN, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_REL14_BRTAKEN", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- true), /* pcrel_offset */
-
- /* A relative 16 bit branch. Bit 10 should be set to indicate that
- the branch is not expected to be taken. The lower two bits must
- be zero. */
- HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_REL14_BRNTAKEN",/* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xfffc, /* dst_mask */
- true), /* pcrel_offset */
-
- /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
- symbol. */
- HOWTO (R_PPC_GOT16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_got16_reloc, /* special_function */
- "R_PPC_GOT16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
- the symbol. */
- HOWTO (R_PPC_GOT16_LO, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_got16_reloc, /* special_function */
- "R_PPC_GOT16_LO", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
- the symbol. */
- HOWTO (R_PPC_GOT16_HI, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_got16_reloc, /* special_function */
- "R_PPC_GOT16_HI", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
- the symbol. FIXME: Not supported. */
- HOWTO (R_PPC_GOT16_HA, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_GOT16_HA", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Like R_PPC_REL24, but referring to the procedure linkage table
- entry for the symbol. FIXME: Not supported. */
- HOWTO (R_PPC_PLT24, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 26, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_PLT24", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0x3fffffc, /* dst_mask */
- true), /* pcrel_offset */
-
- /* This is used only by the dynamic linker. The symbol should exist
- both in the object being run and in some shared library. The
- dynamic linker copies the data addressed by the symbol from the
- shared library into the object. I have no idea what the purpose
- of this is. */
- HOWTO (R_PPC_COPY, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_COPY", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Like R_PPC_ADDR32, but used when setting global offset table
- entries. */
- HOWTO (R_PPC_GLOB_DAT, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_GLOB_DAT", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Marks a procedure linkage table entry for a symbol. */
- HOWTO (R_PPC_JMP_SLOT, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_JMP_SLOT", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Used only by the dynamic linker. When the object is run, this
- longword is set to the load address of the object, plus the
- addend. */
- HOWTO (R_PPC_RELATIVE, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_RELATIVE", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Like R_PPC_REL24, but uses the value of the symbol within the
- object rather than the final value. Normally used for
- _GLOBAL_OFFSET_TABLE_. FIXME: Not supported. */
- HOWTO (R_PPC_LOCAL24PC, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 26, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_LOCAL24PC", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0x3fffffc, /* dst_mask */
- true), /* pcrel_offset */
-
- /* Like R_PPC_ADDR32, but may be unaligned. */
- HOWTO (R_PPC_UADDR32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_UADDR32", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Like R_PPC_ADDR16, but may be unaligned. */
- HOWTO (R_PPC_UADDR16, /* 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_PPC_UADDR16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* 32-bit PC relative */
- HOWTO (R_PPC_REL32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_REL32", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- true), /* pcrel_offset */
-
- /* 32-bit relocation to the symbol's procedure linkage table.
- FIXEME: not supported. */
- HOWTO (R_PPC_PLT32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_PLT32", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
-
- /* 32-bit PC relative relocation to the symbol's procedure linkage table.
- FIXEME: not supported. */
- HOWTO (R_PPC_PLTREL32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_PLTREL32", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- true), /* pcrel_offset */
-
- /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
- the symbol. */
- HOWTO (R_PPC_PLT16_LO, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_PLT16_LO", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
- the symbol. */
- HOWTO (R_PPC_PLT16_HI, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_PLT16_HI", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
- the symbol. FIXME: Not supported. */
- HOWTO (R_PPC_PLT16_HA, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_PLT16_HA", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* A sign-extended 16 bit value relative to _SDA_BASE, for use with
- small data items. */
- HOWTO (R_PPC_SDAREL, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_SDAREL", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* These next 4 relocations were added by Sun. */
- /* 32-bit section relative relocation. FIXME: not supported. */
- HOWTO (R_PPC_SECTOFF, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_SECTOFF", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- true), /* pcrel_offset */
-
- /* 16-bit lower half section relative relocation. FIXME: not supported. */
- HOWTO (R_PPC_SECTOFF_LO, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_SECTOFF_LO", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* 16-bit upper half section relative relocation. FIXME: not supported. */
- HOWTO (R_PPC_SECTOFF_HI, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_SECTOFF_HI", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* 16-bit upper half adjusted section relative relocation. FIXME: not supported. */
- HOWTO (R_PPC_SECTOFF_HA, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_SECTOFF_HA", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* The remaining relocs are from the Embedded ELF ABI, and are not
- in the SVR4 ELF ABI. */
-
- /* 32 bit value resulting from the addend minus the symbol */
- HOWTO (R_PPC_EMB_NADDR32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_EMB_NADDR32", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* 16 bit value resulting from the addend minus the symbol */
- HOWTO (R_PPC_EMB_NADDR16, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_EMB_NADDR16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* 16 bit value resulting from the addend minus the symbol */
- HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont,/* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_EMB_ADDR16_LO", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* The high order 16 bits of the addend minus the symbol */
- HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_EMB_NADDR16_HI", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* The high order 16 bits of the result of the addend minus the address,
- plus 1 if the contents of the low 16 bits, treated as a signed number,
- is negative. */
- HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
- 16, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- ppc_elf_unsupported_reloc, /* special_function */
- "R_PPC_EMB_NADDR16_HA", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- };
-
- /* Don't pretend we can deal with unsupported relocs. */
-
- /*ARGSUSED*/
- static bfd_reloc_status_type
- ppc_elf_unsupported_reloc (abfd, reloc_entry, symbol, data, input_section,
- output_bfd, error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **error_message;
- {
- abort ();
- }
-
- /* Handle the ADDR16_HA reloc by adjusting the reloc addend. */
-
- static bfd_reloc_status_type
- ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
- output_bfd, error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **error_message;
- {
- bfd_vma relocation;
-
- if (output_bfd != (bfd *) NULL)
- return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
-
- if (bfd_is_com_section (symbol->section))
- relocation = 0;
- else
- relocation = symbol->value;
-
- relocation += (symbol->section->output_section->vma
- + symbol->section->output_offset
- + reloc_entry->addend);
-
- if ((relocation & 0x8000) != 0)
- reloc_entry->addend += 0x10000;
-
- return bfd_reloc_continue;
- }
-
- /* Handle the GOT16 reloc. We want to use the offset within the .got
- section, not the actual VMA. This is appropriate when generating
- an embedded ELF object, for which the .got section acts like the
- AIX .toc section. When and if we support PIC code, we will have to
- change this, perhaps by switching off on the e_type field. */
-
- static bfd_reloc_status_type
- ppc_elf_got16_reloc (abfd, reloc_entry, symbol, data, input_section,
- output_bfd, error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **error_message;
- {
- asection *sec;
-
- if (output_bfd != (bfd *) NULL)
- return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
- input_section, output_bfd, error_message);
-
- sec = bfd_get_section (*reloc_entry->sym_ptr_ptr);
- BFD_ASSERT (bfd_is_und_section (sec)
- || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
- || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
- reloc_entry->addend -= sec->output_section->vma;
- return bfd_reloc_continue;
- }
-
- /* Map BFD reloc types to PowerPC ELF reloc types. */
-
- struct powerpc_reloc_map
- {
- unsigned char bfd_reloc_val;
- unsigned char elf_reloc_val;
- };
-
- static const struct powerpc_reloc_map powerpc_reloc_map[] =
- {
- { BFD_RELOC_NONE, R_PPC_NONE, },
- { BFD_RELOC_32, R_PPC_ADDR32 },
- { BFD_RELOC_32_PCREL, R_PPC_REL32 },
- { BFD_RELOC_CTOR, R_PPC_ADDR32 },
- { BFD_RELOC_PPC_B26, R_PPC_REL24 },
- { BFD_RELOC_PPC_BA26, R_PPC_ADDR24 },
- { BFD_RELOC_PPC_TOC16, R_PPC_GOT16 }
- };
-
- static reloc_howto_type *
- bfd_elf32_bfd_reloc_type_lookup (abfd, code)
- bfd *abfd;
- bfd_reloc_code_real_type code;
- {
- int i;
-
- for (i = 0;
- i < sizeof (powerpc_reloc_map) / sizeof (struct powerpc_reloc_map);
- i++)
- {
- if (powerpc_reloc_map[i].bfd_reloc_val == code)
- return &elf_powerpc_howto_table[powerpc_reloc_map[i].elf_reloc_val];
- }
-
- return NULL;
- }
-
- /* Set the howto pointer for a PowerPC ELF reloc. */
-
- static void
- powerpc_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd;
- arelent *cache_ptr;
- Elf32_Internal_Rela *dst;
- {
- BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
- cache_ptr->howto = &elf_powerpc_howto_table[ELF32_R_TYPE (dst->r_info)];
- }
-
- #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
- #define TARGET_BIG_NAME "elf32-powerpc"
- #define ELF_ARCH bfd_arch_powerpc
- #define ELF_MACHINE_CODE EM_PPC
- #define ELF_MAXPAGESIZE 0x10000
- #define elf_info_to_howto powerpc_info_to_howto
-
- #include "elf32-target.h"
-