home *** CD-ROM | disk | FTP | other *** search
- /* PowerPC-specific support for 32-bit ELF
- Copyright 1994, 1995, 1996 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 "bfdlink.h"
- #include "libbfd.h"
- #include "elf-bfd.h"
- #include "elf/ppc.h"
-
- #define USE_RELA /* we want RELA relocations, not REL */
-
- /* PowerPC relocations defined by the ABIs */
- enum ppc_reloc_type
- {
- R_PPC_NONE = 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_PLTREL24 = 18,
- R_PPC_COPY = 19,
- R_PPC_GLOB_DAT = 20,
- 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_SDAREL16 = 32,
- 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,
- 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,
-
- /* This is a phony reloc to handle any old fashioned TOC16 references
- that may still be in object files. */
- R_PPC_TOC16 = 255,
-
- R_PPC_max
- };
-
- static reloc_howto_type *ppc_elf_reloc_type_lookup
- PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
- static void ppc_elf_info_to_howto
- PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst));
- static void ppc_elf_howto_init PARAMS ((void));
- static boolean ppc_elf_set_private_flags PARAMS ((bfd *, flagword));
- static boolean ppc_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
- static boolean ppc_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
-
- static int ppc_elf_additional_program_headers PARAMS ((bfd *));
- static boolean ppc_elf_modify_segment_map PARAMS ((bfd *));
-
- static boolean ppc_elf_section_from_shdr PARAMS ((bfd *,
- Elf32_Internal_Shdr *,
- char *));
-
- static elf_linker_section_t *ppc_elf_create_linker_section
- PARAMS ((bfd *abfd,
- struct bfd_link_info *info,
- enum elf_linker_section_enum));
-
- static boolean ppc_elf_check_relocs PARAMS ((bfd *,
- struct bfd_link_info *,
- asection *,
- const Elf_Internal_Rela *));
-
- static boolean ppc_elf_adjust_dynamic_symbol PARAMS ((struct bfd_link_info *,
- struct elf_link_hash_entry *));
-
- static boolean ppc_elf_adjust_dynindx PARAMS ((struct elf_link_hash_entry *, PTR));
-
- static boolean ppc_elf_size_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *));
-
- static boolean ppc_elf_relocate_section PARAMS ((bfd *,
- struct bfd_link_info *info,
- bfd *,
- asection *,
- bfd_byte *,
- Elf_Internal_Rela *relocs,
- Elf_Internal_Sym *local_syms,
- asection **));
-
- static boolean ppc_elf_add_symbol_hook PARAMS ((bfd *,
- struct bfd_link_info *,
- const Elf_Internal_Sym *,
- const char **,
- flagword *,
- asection **,
- bfd_vma *));
-
- static boolean ppc_elf_finish_dynamic_symbol PARAMS ((bfd *,
- struct bfd_link_info *,
- struct elf_link_hash_entry *,
- Elf_Internal_Sym *));
-
- static boolean ppc_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *));
-
- #define BRANCH_PREDICT_BIT 0x200000 /* branch prediction bit for branch taken relocs */
- #define RA_REGISTER_MASK 0x001f0000 /* mask to set RA in memory instructions */
- #define RA_REGISTER_SHIFT 16 /* value to shift register by to insert RA */
-
- /* The name of the dynamic interpreter. This is put in the .interp
- section. */
-
- #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
-
- /* The size in bytes of an entry in the procedure linkage table, and of the initial size
- of the plt reserved for the dynamic linker. */
-
- #define PLT_ENTRY_SIZE 12
- #define PLT_INITIAL_ENTRY_SIZE 72
-
-
- static reloc_howto_type *ppc_elf_howto_table[ (int)R_PPC_max ];
-
- static reloc_howto_type ppc_elf_howto_raw[] =
- {
- /* 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 */
- bfd_elf_generic_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 */
- bfd_elf_generic_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 */
- bfd_elf_generic_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 */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_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 */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_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_signed, /* complain_on_overflow */
- bfd_elf_generic_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 */
- bfd_elf_generic_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 */
- bfd_elf_generic_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. */
- 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 */
- bfd_elf_generic_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_PLTREL24, /* 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_PLTREL24", /* 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 */
- bfd_elf_generic_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 */
- 0xffffffff, /* 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 */
- bfd_elf_generic_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 */
- bfd_elf_generic_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 */
- bfd_elf_generic_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 */
- bfd_elf_generic_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 */
- bfd_elf_generic_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_SDAREL16, /* 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_PPC_SDAREL16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* 32-bit section relative relocation. */
- 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 */
- bfd_elf_generic_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. */
- 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 */
- bfd_elf_generic_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. */
- 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 */
- bfd_elf_generic_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. */
- 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 */
- bfd_elf_generic_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 */
- bfd_elf_generic_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 */
- bfd_elf_generic_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 */
- bfd_elf_generic_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 */
- bfd_elf_generic_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 */
- bfd_elf_generic_reloc, /* special_function */
- "R_PPC_EMB_NADDR16_HA", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* 16 bit value resulting from allocating a 4 byte word to hold an
- address in the .sdata section, and returning the offset from
- _SDA_BASE_ for that relocation */
- HOWTO (R_PPC_EMB_SDAI16, /* 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_EMB_SDAI16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* 16 bit value resulting from allocating a 4 byte word to hold an
- address in the .sdata2 section, and returning the offset from
- _SDA2_BASE_ for that relocation */
- HOWTO (R_PPC_EMB_SDA2I16, /* 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_EMB_SDA2I16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
- small data items. */
- HOWTO (R_PPC_EMB_SDA2REL, /* 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_PPC_EMB_SDA2REL", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
- signed offset from the appropriate base, and filling in the register
- field with the appropriate register (0, 2, or 13). */
- HOWTO (R_PPC_EMB_SDA21, /* type */
- 0, /* rightshift */
- 2, /* 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_PPC_EMB_SDA21", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Relocation not handled: R_PPC_EMB_MRKREF */
- /* Relocation not handled: R_PPC_EMB_RELSEC16 */
- /* Relocation not handled: R_PPC_EMB_RELST_LO */
- /* Relocation not handled: R_PPC_EMB_RELST_HI */
- /* Relocation not handled: R_PPC_EMB_RELST_HA */
- /* Relocation not handled: R_PPC_EMB_BIT_FLD */
-
- /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
- in the 16 bit signed offset from the appropriate base, and filling in the
- register field with the appropriate register (0, 2, or 13). */
- HOWTO (R_PPC_EMB_RELSDA, /* 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_PPC_EMB_RELSDA", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
-
- /* Phony reloc to handle AIX style TOC entries */
- HOWTO (R_PPC_TOC16, /* 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_PPC_TOC16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- };
-
-
- /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
-
- static void
- ppc_elf_howto_init ()
- {
- unsigned int i, type;
-
- for (i = 0; i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); i++)
- {
- type = ppc_elf_howto_raw[i].type;
- BFD_ASSERT (type < sizeof(ppc_elf_howto_table) / sizeof(ppc_elf_howto_table[0]));
- ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
- }
- }
-
-
- static reloc_howto_type *
- ppc_elf_reloc_type_lookup (abfd, code)
- bfd *abfd;
- bfd_reloc_code_real_type code;
- {
- enum ppc_reloc_type ppc_reloc = R_PPC_NONE;
-
- if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
- ppc_elf_howto_init ();
-
- switch ((int)code)
- {
- default:
- return (reloc_howto_type *)NULL;
-
- case BFD_RELOC_NONE: ppc_reloc = R_PPC_NONE; break;
- case BFD_RELOC_32: ppc_reloc = R_PPC_ADDR32; break;
- case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC_ADDR24; break;
- case BFD_RELOC_16: ppc_reloc = R_PPC_ADDR16; break;
- case BFD_RELOC_LO16: ppc_reloc = R_PPC_ADDR16_LO; break;
- case BFD_RELOC_HI16: ppc_reloc = R_PPC_ADDR16_HI; break;
- case BFD_RELOC_HI16_S: ppc_reloc = R_PPC_ADDR16_HA; break;
- case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC_ADDR14; break;
- case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC_ADDR14_BRTAKEN; break;
- case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC_ADDR14_BRNTAKEN; break;
- case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC_REL24; break;
- case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC_REL14; break;
- case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC_REL14_BRTAKEN; break;
- case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC_REL14_BRNTAKEN; break;
- case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC_GOT16; break;
- case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC_GOT16_LO; break;
- case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC_GOT16_HI; break;
- case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC_GOT16_HA; break;
- case BFD_RELOC_24_PLT_PCREL: ppc_reloc = R_PPC_PLTREL24; break;
- case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC_COPY; break;
- case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC_GLOB_DAT; break;
- case BFD_RELOC_PPC_LOCAL24PC: ppc_reloc = R_PPC_LOCAL24PC; break;
- case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC_REL32; break;
- case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC_PLT32; break;
- case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC_PLTREL32; break;
- case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC_PLT16_LO; break;
- case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC_PLT16_HI; break;
- case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC_PLT16_HA; break;
- case BFD_RELOC_GPREL16: ppc_reloc = R_PPC_SDAREL16; break;
- case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC_SECTOFF; break;
- case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC_SECTOFF_LO; break;
- case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC_SECTOFF_HI; break;
- case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC_SECTOFF_HA; break;
- case BFD_RELOC_CTOR: ppc_reloc = R_PPC_ADDR32; break;
- case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC_TOC16; break;
- case BFD_RELOC_PPC_EMB_NADDR32: ppc_reloc = R_PPC_EMB_NADDR32; break;
- case BFD_RELOC_PPC_EMB_NADDR16: ppc_reloc = R_PPC_EMB_NADDR16; break;
- case BFD_RELOC_PPC_EMB_NADDR16_LO: ppc_reloc = R_PPC_EMB_NADDR16_LO; break;
- case BFD_RELOC_PPC_EMB_NADDR16_HI: ppc_reloc = R_PPC_EMB_NADDR16_HI; break;
- case BFD_RELOC_PPC_EMB_NADDR16_HA: ppc_reloc = R_PPC_EMB_NADDR16_HA; break;
- case BFD_RELOC_PPC_EMB_SDAI16: ppc_reloc = R_PPC_EMB_SDAI16; break;
- case BFD_RELOC_PPC_EMB_SDA2I16: ppc_reloc = R_PPC_EMB_SDA2I16; break;
- case BFD_RELOC_PPC_EMB_SDA2REL: ppc_reloc = R_PPC_EMB_SDA2REL; break;
- case BFD_RELOC_PPC_EMB_SDA21: ppc_reloc = R_PPC_EMB_SDA21; break;
- case BFD_RELOC_PPC_EMB_MRKREF: ppc_reloc = R_PPC_EMB_MRKREF; break;
- case BFD_RELOC_PPC_EMB_RELSEC16: ppc_reloc = R_PPC_EMB_RELSEC16; break;
- case BFD_RELOC_PPC_EMB_RELST_LO: ppc_reloc = R_PPC_EMB_RELST_LO; break;
- case BFD_RELOC_PPC_EMB_RELST_HI: ppc_reloc = R_PPC_EMB_RELST_HI; break;
- case BFD_RELOC_PPC_EMB_RELST_HA: ppc_reloc = R_PPC_EMB_RELST_HA; break;
- case BFD_RELOC_PPC_EMB_BIT_FLD: ppc_reloc = R_PPC_EMB_BIT_FLD; break;
- case BFD_RELOC_PPC_EMB_RELSDA: ppc_reloc = R_PPC_EMB_RELSDA; break;
- }
-
- return ppc_elf_howto_table[ (int)ppc_reloc ];
- };
-
- /* Set the howto pointer for a PowerPC ELF reloc. */
-
- static void
- ppc_elf_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd;
- arelent *cache_ptr;
- Elf32_Internal_Rela *dst;
- {
- if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
- ppc_elf_howto_init ();
-
- BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
- cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
- }
-
- /* Function to set whether a module needs the -mrelocatable bit set. */
-
- static boolean
- ppc_elf_set_private_flags (abfd, flags)
- bfd *abfd;
- flagword flags;
- {
- BFD_ASSERT (!elf_flags_init (abfd)
- || elf_elfheader (abfd)->e_flags == flags);
-
- elf_elfheader (abfd)->e_flags = flags;
- elf_flags_init (abfd) = true;
- return true;
- }
-
- /* Copy backend specific data from one object module to another */
- static boolean
- ppc_elf_copy_private_bfd_data (ibfd, obfd)
- bfd *ibfd;
- bfd *obfd;
- {
- /* This function is selected based on the input vector. We only
- want to copy information over if the output BFD also uses Elf
- format. */
- if (bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return true;
-
- BFD_ASSERT (!elf_flags_init (obfd)
- || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
-
- elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
- elf_flags_init (obfd) = true;
- return true;
- }
-
- /* Merge backend specific data from an object file to the output
- object file when linking */
- static boolean
- ppc_elf_merge_private_bfd_data (ibfd, obfd)
- bfd *ibfd;
- bfd *obfd;
- {
- flagword old_flags;
- flagword new_flags;
- boolean error;
-
- /* Check if we have the same endianess */
- if (ibfd->xvec->byteorder != obfd->xvec->byteorder
- && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
- {
- (*_bfd_error_handler)
- ("%s: compiled for a %s endian system and target is %s endian",
- bfd_get_filename (ibfd),
- bfd_big_endian (ibfd) ? "big" : "little",
- bfd_big_endian (obfd) ? "big" : "little");
-
- bfd_set_error (bfd_error_wrong_format);
- return false;
- }
-
- /* This function is selected based on the input vector. We only
- want to copy information over if the output BFD also uses Elf
- format. */
- if (bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return true;
-
- new_flags = elf_elfheader (ibfd)->e_flags;
- old_flags = elf_elfheader (obfd)->e_flags;
- if (!elf_flags_init (obfd)) /* First call, no flags set */
- {
- elf_flags_init (obfd) = true;
- elf_elfheader (obfd)->e_flags = new_flags;
- }
-
- else if (new_flags == old_flags) /* Compatible flags are ok */
- ;
-
- else /* Incompatible flags */
- {
- /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked
- with either. */
- error = false;
- if ((new_flags & EF_PPC_RELOCATABLE) != 0
- && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
- {
- error = true;
- (*_bfd_error_handler)
- ("%s: compiled with -mrelocatable and linked with modules compiled normally",
- bfd_get_filename (ibfd));
- }
- else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
- && (old_flags & EF_PPC_RELOCATABLE) != 0)
- {
- error = true;
- (*_bfd_error_handler)
- ("%s: compiled normally and linked with modules compiled with -mrelocatable",
- bfd_get_filename (ibfd));
- }
- else if ((new_flags & EF_PPC_RELOCATABLE_LIB) != 0)
- elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE_LIB;
-
-
- /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if any module uses it */
- elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
-
- new_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
- old_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
-
- /* Warn about any other mismatches */
- if (new_flags != old_flags)
- {
- error = true;
- (*_bfd_error_handler)
- ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)",
- bfd_get_filename (ibfd), (long)new_flags, (long)old_flags);
- }
-
- if (error)
- {
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- }
-
- return true;
- }
-
-
- /* Handle a PowerPC specific section when reading an object file. This
- is called when elfcode.h finds a section with an unknown type. */
-
- static boolean
- ppc_elf_section_from_shdr (abfd, hdr, name)
- bfd *abfd;
- Elf32_Internal_Shdr *hdr;
- char *name;
- {
- asection *newsect;
- flagword flags;
-
- if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
- return false;
-
- newsect = hdr->bfd_section;
- flags = bfd_get_section_flags (abfd, newsect);
- if (hdr->sh_flags & SHF_EXCLUDE)
- flags |= SEC_EXCLUDE;
-
- if (hdr->sh_type == SHT_ORDERED)
- flags |= SEC_SORT_ENTRIES;
-
- bfd_set_section_flags (abfd, newsect, flags);
- return true;
- }
-
-
- /* Set up any other section flags and such that may be necessary. */
-
- boolean
- ppc_elf_fake_sections (abfd, shdr, asect)
- bfd *abfd;
- Elf32_Internal_Shdr *shdr;
- asection *asect;
- {
- if ((asect->flags & SEC_EXCLUDE) != 0)
- shdr->sh_flags |= SHF_EXCLUDE;
-
- if ((asect->flags & SEC_SORT_ENTRIES) != 0)
- shdr->sh_type = SHT_ORDERED;
-
- return true;
- }
-
-
- /* Create a special linker section */
- static elf_linker_section_t *
- ppc_elf_create_linker_section (abfd, info, which)
- bfd *abfd;
- struct bfd_link_info *info;
- enum elf_linker_section_enum which;
- {
- bfd *dynobj = elf_hash_table (info)->dynobj;
- elf_linker_section_t *lsect;
-
- /* Record the first bfd section that needs the special section */
- if (!dynobj)
- dynobj = elf_hash_table (info)->dynobj = abfd;
-
- /* If this is the first time, create the section */
- lsect = elf_linker_section (dynobj, which);
- if (!lsect)
- {
- elf_linker_section_t defaults;
- static elf_linker_section_t zero_section;
-
- defaults = zero_section;
- defaults.which = which;
- defaults.hole_written_p = false;
- defaults.alignment = 2;
- defaults.flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
-
- switch (which)
- {
- default:
- (*_bfd_error_handler) ("%s: Unknown special linker type %d",
- bfd_get_filename (abfd),
- (int)which);
-
- bfd_set_error (bfd_error_bad_value);
- return (elf_linker_section_t *)0;
-
- case LINKER_SECTION_GOT: /* .got section */
- defaults.name = ".got";
- defaults.rel_name = ".rela.got";
- defaults.sym_name = "_GLOBAL_OFFSET_TABLE_";
- defaults.max_hole_offset = 32764;
- defaults.hole_size = 16;
- defaults.sym_offset = 4;
- break;
-
- case LINKER_SECTION_PLT: /* .plt section */
- defaults.name = ".plt";
- defaults.rel_name = ".rela.plt";
- defaults.sym_name = (char *)0;
- defaults.max_hole_offset = 0;
- defaults.hole_size = 0;
- defaults.sym_offset = 0;
- defaults.flags &= ~SEC_LOAD;
- break;
-
- case LINKER_SECTION_SDATA: /* .sdata/.sbss section */
- defaults.name = ".sdata";
- defaults.rel_name = ".rela.sdata";
- defaults.bss_name = ".sbss";
- defaults.sym_name = "_SDA_BASE_";
- defaults.sym_offset = 32768;
- break;
-
- case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */
- defaults.name = ".sdata2";
- defaults.rel_name = ".rela.sdata2";
- defaults.bss_name = ".sbss2";
- defaults.sym_name = "_SDA2_BASE_";
- defaults.sym_offset = 32768;
- defaults.flags |= SEC_READONLY;
- break;
- }
-
- lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults);
- }
-
- return lsect;
- }
-
-
- /* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we need to bump up
- the number of section headers. */
-
- static int
- ppc_elf_additional_program_headers (abfd)
- bfd *abfd;
- {
- asection *s;
- int ret;
-
- ret = 0;
-
- s = bfd_get_section_by_name (abfd, ".interp");
- if (s != NULL)
- ++ret;
-
- s = bfd_get_section_by_name (abfd, ".sbss2");
- if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
- ++ret;
-
- s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
- if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
- ++ret;
-
- return ret;
- }
-
- /* Modify the segment map if needed */
-
- static boolean
- ppc_elf_modify_segment_map (abfd)
- bfd *abfd;
- {
- return true;
- }
-
- /* 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 boolean
- ppc_elf_adjust_dynamic_symbol (info, h)
- struct bfd_link_info *info;
- struct elf_link_hash_entry *h;
- {
- bfd *dynobj = elf_hash_table (info)->dynobj;
- asection *s;
- unsigned int power_of_two;
- bfd_vma plt_offset;
-
- #ifdef DEBUG
- fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", h->root.root.string);
- #endif
-
- /* Make sure we know what is going on here. */
- BFD_ASSERT (dynobj != NULL
- && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
- || h->weakdef != NULL
- || ((h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_DYNAMIC) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_REF_REGULAR) != 0
- && (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0)));
-
-
- /* If this is a function, put it in the procedure linkage table. We
- will fill in the contents of the procedure linkage table later,
- when we know the address of the .got section. */
- if (h->type == STT_FUNC
- || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
- {
- if (! info->shared
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
- && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)
- {
- /* This case can occur if we saw a PLT32 reloc in an input
- file, but the symbol was never referred to by a dynamic
- object. In such a case, we don't actually need to build
- a procedure linkage table, and we can just do a PC32
- reloc instead. */
- BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
- return true;
- }
-
- /* Make sure this symbol is output as a dynamic symbol. */
- if (h->dynindx == -1)
- {
- if (! bfd_elf32_link_record_dynamic_symbol (info, h))
- return false;
- }
-
- s = bfd_get_section_by_name (dynobj, ".plt");
- BFD_ASSERT (s != NULL);
-
- /* If this is the first .plt entry, make room for the special
- first entry. */
- if (s->_raw_size == 0)
- s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
-
- /* The PowerPC PLT is actually composed of two parts, the first part
- is 2 words (for a load and a jump), and then there is a remaining
- word available at the end. */
- plt_offset = (PLT_INITIAL_ENTRY_SIZE
- + 8 * ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_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 (! info->shared
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
- {
- h->root.u.def.section = s;
- h->root.u.def.value = plt_offset;
- }
-
- h->plt_offset = plt_offset;
-
- /* Make room for this entry. */
- s->_raw_size += PLT_ENTRY_SIZE;
-
- /* We also need to make an entry in the .rela.plt section. */
-
- s = bfd_get_section_by_name (dynobj, ".rela.plt");
- BFD_ASSERT (s != NULL);
- s->_raw_size += sizeof (Elf32_External_Rela);
-
- return true;
- }
-
- /* 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->weakdef != NULL)
- {
- BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
- || h->weakdef->root.type == bfd_link_hash_defweak);
- h->root.u.def.section = h->weakdef->root.u.def.section;
- h->root.u.def.value = h->weakdef->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 (info->shared)
- 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. */
-
- s = bfd_get_section_by_name (dynobj, ".dynbss");
- BFD_ASSERT (s != NULL);
-
- /* If the symbol is currently defined in the .bss section of the
- dynamic object, then it is OK to simply initialize it to zero.
- If the symbol is in some other section, we must generate a
- R_PPC_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 .rela.bss section
- we are going to use. */
- if ((h->root.u.def.section->flags & SEC_LOAD) != 0)
- {
- asection *srel;
-
- srel = bfd_get_section_by_name (dynobj, ".rela.bss");
- BFD_ASSERT (srel != NULL);
- srel->_raw_size += sizeof (Elf32_External_Rel);
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
- }
-
- /* We need to figure out the alignment required for this symbol. I
- have no idea how ELF linkers handle this. */
- power_of_two = bfd_log2 (h->size);
- if (power_of_two > 3)
- power_of_two = 3;
-
- /* Apply the required alignment. */
- s->_raw_size = BFD_ALIGN (s->_raw_size,
- (bfd_size_type) (1 << power_of_two));
- if (power_of_two > bfd_get_section_alignment (dynobj, s))
- {
- if (! bfd_set_section_alignment (dynobj, s, power_of_two))
- return false;
- }
-
- /* Define the symbol as being at this point in the section. */
- h->root.u.def.section = s;
- h->root.u.def.value = s->_raw_size;
-
- /* Increment the section size to make room for the symbol. */
- s->_raw_size += h->size;
-
- return true;
- }
-
-
- /* Increment the index of a dynamic symbol by a given amount. Called
- via elf_link_hash_traverse. */
-
- static boolean
- ppc_elf_adjust_dynindx (h, cparg)
- struct elf_link_hash_entry *h;
- PTR cparg;
- {
- int *cp = (int *) cparg;
-
- #ifdef DEBUG
- fprintf (stderr, "ppc_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n", h->dynindx, *cp);
- #endif
-
- if (h->dynindx != -1)
- h->dynindx += *cp;
-
- return true;
- }
-
-
- /* Set the sizes of the dynamic sections. */
-
- static boolean
- ppc_elf_size_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
- struct bfd_link_info *info;
- {
- bfd *dynobj;
- asection *s;
- boolean plt;
- boolean relocs;
- boolean reltext;
-
- #ifdef DEBUG
- fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
- #endif
-
- dynobj = elf_hash_table (info)->dynobj;
- BFD_ASSERT (dynobj != NULL);
-
- if (elf_hash_table (info)->dynamic_sections_created)
- {
- /* Set the contents of the .interp section to the interpreter. */
- if (! info->shared)
- {
- s = bfd_get_section_by_name (dynobj, ".interp");
- BFD_ASSERT (s != NULL);
- s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
- s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
- }
-
- /* Make space for the trailing nop in .plt. */
- s = bfd_get_section_by_name (dynobj, ".plt");
- BFD_ASSERT (s != NULL);
- if (s->_raw_size > 0)
- s->_raw_size += 4;
- }
- else
- {
- /* We may have created entries in the .rela.got, .rela.sdata, and
- .rela.sdata2 section2. However, if we are not creating the
- dynamic sections, we will not actually use these entries. Reset
- the size of .rela.got, et al, which will cause it to get
- stripped from the output file below. */
- static char *rela_sections[] = { ".rela.got", ".rela.sdata", ".rela.sdata", (char *)0 };
- char **p;
-
- for (p = rela_sections; *p != (char *)0; p++)
- {
- s = bfd_get_section_by_name (dynobj, *p);
- if (s != NULL)
- s->_raw_size = 0;
- }
- }
-
- /* The check_relocs and adjust_dynamic_symbol entry points have
- determined the sizes of the various dynamic sections. Allocate
- memory for them. */
- plt = false;
- relocs = false;
- reltext = false;
- for (s = dynobj->sections; s != NULL; s = s->next)
- {
- const char *name;
- boolean strip;
-
- if ((s->flags & SEC_IN_MEMORY) == 0)
- continue;
-
- /* It's OK to base decisions on the section name, because none
- of the dynobj section names depend upon the input files. */
- name = bfd_get_section_name (dynobj, s);
-
- strip = false;
-
- if (strcmp (name, ".plt") == 0)
- {
- if (s->_raw_size == 0)
- {
- /* Strip this section if we don't need it; see the
- comment below. */
- strip = true;
- }
- else
- {
- /* Remember whether there is a PLT. */
- plt = true;
- }
- }
- else if (strncmp (name, ".rela", 5) == 0)
- {
- if (s->_raw_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. */
- strip = true;
- }
- else
- {
- asection *target;
-
- /* Remember whether there are any reloc sections other
- than .rel.plt. */
- if (strcmp (name, ".rela.plt") != 0)
- {
- relocs = true;
-
- /* If this relocation section applies to a read only
- section, then we probably need a DT_TEXTREL
- entry. The entries in the .rel.plt section
- really apply to the .got section, which we
- created ourselves and so know is not readonly. */
- target = bfd_get_section_by_name (output_bfd, name + 4);
- if (target != NULL
- && (target->flags & SEC_READONLY) != 0)
- reltext = true;
- }
-
- /* We use the reloc_count field as a counter if we need
- to copy relocs into the output file. */
- s->reloc_count = 0;
- }
- }
- else if (strcmp (name, ".got") != 0
- && strcmp (name, ".sdata") != 0
- && strcmp (name, ".sdata2") != 0)
- {
- /* It's not one of our sections, so don't allocate space. */
- continue;
- }
-
- if (strip)
- {
- asection **spp;
-
- for (spp = &s->output_section->owner->sections;
- *spp != s->output_section;
- spp = &(*spp)->next)
- ;
- *spp = s->output_section->next;
- --s->output_section->owner->section_count;
-
- continue;
- }
-
- /* Allocate memory for the section contents. */
- s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
- if (s->contents == NULL && s->_raw_size != 0)
- return false;
- }
-
- if (elf_hash_table (info)->dynamic_sections_created)
- {
- /* Add some entries to the .dynamic section. We fill in the
- values later, in ppc_elf_finish_dynamic_sections, but we
- must add the entries now so that we get the correct size for
- the .dynamic section. The DT_DEBUG entry is filled in by the
- dynamic linker and used by the debugger. */
- if (! info->shared)
- {
- if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
- return false;
- }
-
- if (plt)
- {
- if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)
- || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
- || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_REL)
- || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
- return false;
- }
-
- if (relocs)
- {
- if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
- || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, DT_RELA)
- || ! bfd_elf32_add_dynamic_entry (info, DT_RELENT,
- sizeof (Elf32_External_Rela)))
- return false;
- }
-
- if (reltext)
- {
- if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
- return false;
- }
- }
-
- /* If we are generating a shared library, we generate a section
- symbol for each output section. These are local symbols, which
- means that they must come first in the dynamic symbol table.
- That means we must increment the dynamic symbol index of every
- other dynamic symbol. */
- if (info->shared)
- {
- int c, i;
-
- c = bfd_count_sections (output_bfd);
- elf_link_hash_traverse (elf_hash_table (info),
- ppc_elf_adjust_dynindx,
- (PTR) &c);
- elf_hash_table (info)->dynsymcount += c;
-
- for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++)
- {
- elf_section_data (s)->dynindx = i;
- /* These symbols will have no names, so we don't need to
- fiddle with dynstr_index. */
- }
- }
-
- return true;
- }
-
-
- /* Look through the relocs for a section during the first phase, and
- allocate space in the global offset table or procedure linkage
- table. */
-
- static boolean
- ppc_elf_check_relocs (abfd, info, sec, relocs)
- bfd *abfd;
- struct bfd_link_info *info;
- asection *sec;
- const Elf_Internal_Rela *relocs;
- {
- boolean ret = true;
- bfd *dynobj;
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- const Elf_Internal_Rela *rel;
- const Elf_Internal_Rela *rel_end;
- elf_linker_section_t *got;
- elf_linker_section_t *plt;
- elf_linker_section_t *sdata;
- elf_linker_section_t *sdata2;
- asection *sreloc;
-
- if (info->relocateable)
- return true;
-
- #ifdef DEBUG
- fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n",
- bfd_get_section_name (abfd, sec),
- bfd_get_filename (abfd));
- #endif
-
- /* Create the linker generated sections all the time so that the special
- symbols are created. */
- if ((got = elf_linker_section (abfd, LINKER_SECTION_GOT)) == NULL)
- {
- got = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_GOT);
- if (!got)
- ret = false;
- }
-
- #if 0
- if ((plt = elf_linker_section (abfd, LINKER_SECTION_PLT)) == NULL)
- {
- plt = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_PLT);
- if (!plt)
- ret = false;
- }
- #endif
-
- if ((sdata = elf_linker_section (abfd, LINKER_SECTION_SDATA)) == NULL)
- {
- sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA);
- if (!sdata)
- ret = false;
- }
-
-
- if ((sdata2 = elf_linker_section (abfd, LINKER_SECTION_SDATA2)) == NULL)
- {
- sdata2 = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA2);
- if (!sdata2)
- ret = false;
- }
-
- dynobj = elf_hash_table (info)->dynobj;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (abfd);
-
- sreloc = NULL;
-
- rel_end = relocs + sec->reloc_count;
- for (rel = relocs; rel < rel_end; rel++)
- {
- unsigned long r_symndx;
- struct elf_link_hash_entry *h;
-
- r_symndx = ELF32_R_SYM (rel->r_info);
- if (r_symndx < symtab_hdr->sh_info)
- h = NULL;
- else
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
-
- switch (ELF32_R_TYPE (rel->r_info))
- {
- /* GOT16 relocations */
- case R_PPC_GOT16:
- case R_PPC_GOT16_LO:
- case R_PPC_GOT16_HI:
- case R_PPC_GOT16_HA:
- if (got->rel_section == NULL
- && (h != NULL || info->shared)
- && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
- {
- ret = false;
- break;
- }
-
- if (!bfd_elf32_create_pointer_linker_section (abfd, info, got, h, rel))
- ret = false;
-
- break;
-
- /* Indirect .sdata relocation */
- case R_PPC_EMB_SDAI16:
- if (info->shared)
- {
- (*_bfd_error_handler) ("%s: relocation %s cannot be used when making a shared object",
- bfd_get_filename (abfd),
- "R_PPC_EMB_SDAI16");
- ret = false;
- break;
- }
-
- if (got->rel_section == NULL
- && (h != NULL || info->shared)
- && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
- {
- ret = false;
- break;
- }
-
- if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata, h, rel))
- ret = false;
-
- break;
-
- /* Indirect .sdata2 relocation */
- case R_PPC_EMB_SDA2I16:
- if (info->shared)
- {
- (*_bfd_error_handler) ("%s: relocation %s cannot be used when making a shared object",
- bfd_get_filename (abfd),
- "R_PPC_EMB_SDA2I16");
- ret = false;
- break;
- }
-
- if (got->rel_section == NULL
- && (h != NULL || info->shared)
- && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
- return false;
-
- if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata2, h, rel))
- return false;
-
- break;
-
- case R_PPC_SDAREL16:
- case R_PPC_EMB_SDA2REL:
- case R_PPC_EMB_SDA21:
- if (info->shared)
- {
- (*_bfd_error_handler) ("%s: relocation %s cannot be used when making a shared object",
- bfd_get_filename (abfd),
- ppc_elf_howto_table[(int)ELF32_R_TYPE (rel->r_info)]->name);
- ret = false;
- }
- break;
-
- case R_PPC_PLT32:
- case R_PPC_PLTREL24:
- case R_PPC_PLT16_LO:
- case R_PPC_PLT16_HI:
- case R_PPC_PLT16_HA:
- #ifdef DEBUG
- fprintf (stderr, "Reloc requires a PLT entry\n");
- #endif
- /* 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)
- {
- /* It does not make sense to have a procedure linkage
- table entry for a local symbol. */
- bfd_set_error (bfd_error_bad_value);
- ret = false;
- break;
- }
-
- /* Make sure this symbol is output as a dynamic symbol. */
- if (h->dynindx == -1)
- {
- if (! bfd_elf32_link_record_dynamic_symbol (info, h))
- {
- ret = false;
- break;
- }
- }
-
- h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
- break;
-
- /* the following relocations don't need to propigate the relocation if
- linking a shared object since they are section relative. */
- case R_PPC_SECTOFF:
- case R_PPC_SECTOFF_LO:
- case R_PPC_SECTOFF_HI:
- case R_PPC_SECTOFF_HA:
- break;
-
- /* 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. */
- case R_PPC_REL24:
- if (h != NULL
- && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
- break;
- /* fall through */
-
- case R_PPC_REL14:
- case R_PPC_REL14_BRTAKEN:
- case R_PPC_REL14_BRNTAKEN:
- if (h == NULL)
- break;
- /* fall through */
-
- default:
- if (info->shared
- && (sec->flags & SEC_ALLOC) != 0)
- {
- if (sreloc == NULL)
- {
- const char *name;
-
- name = (bfd_elf_string_from_elf_section
- (abfd,
- elf_elfheader (abfd)->e_shstrndx,
- elf_section_data (sec)->rel_hdr.sh_name));
- if (name == NULL)
- {
- ret = false;
- break;
- }
-
- BFD_ASSERT (strncmp (name, ".rela", 5) == 0
- && strcmp (bfd_get_section_name (abfd, sec),
- name + 5) == 0);
-
- sreloc = bfd_get_section_by_name (dynobj, name);
- if (sreloc == NULL)
- {
- sreloc = bfd_make_section (dynobj, name);
- if (sreloc == NULL
- || ! bfd_set_section_flags (dynobj, sreloc,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_READONLY))
- || ! bfd_set_section_alignment (dynobj, sreloc, 2))
- {
- ret = false;
- break;
- }
- }
- }
-
- sreloc->_raw_size += sizeof (Elf32_External_Rela);
- }
-
- break;
- }
- }
-
- return ret;
- }
-
-
- /* Hook called by the linker routine which adds symbols from an object
- file. We use it to put .comm items in .sbss, and not .bss. */
-
- /*ARGSUSED*/
- static boolean
- ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
- bfd *abfd;
- struct bfd_link_info *info;
- const Elf_Internal_Sym *sym;
- const char **namep;
- flagword *flagsp;
- asection **secp;
- bfd_vma *valp;
- {
- if (sym->st_shndx == SHN_COMMON && !info->relocateable && sym->st_size <= bfd_get_gp_size (abfd))
- {
- /* Common symbols less than or equal to -G nn bytes are automatically
- put into .sdata. */
- elf_linker_section_t *sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA);
- if (!sdata->bss_section)
- {
- sdata->bss_section = bfd_make_section (elf_hash_table (info)->dynobj, sdata->bss_name);
- sdata->bss_section->flags = (sdata->bss_section->flags & ~SEC_LOAD) | SEC_IS_COMMON;
- }
-
- *secp = sdata->bss_section;
- *valp = sym->st_size;
- }
-
- return true;
- }
-
-
- /* Finish up dynamic symbol handling. We set the contents of various
- dynamic sections here. */
-
- static boolean
- ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
- bfd *output_bfd;
- struct bfd_link_info *info;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
- {
- bfd *dynobj;
-
- #ifdef DEBUG
- fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", h->root.root.string);
- #endif
-
- dynobj = elf_hash_table (info)->dynobj;
- BFD_ASSERT (dynobj != NULL);
-
- if (h->plt_offset != (bfd_vma) -1)
- {
- asection *splt;
- asection *srela;
- Elf_Internal_Rela rela;
-
- #ifdef DEBUG
- fprintf (stderr, ", plt_offset = %d", h->plt_offset);
- #endif
-
- /* This symbol has an entry in the procedure linkage table. Set
- it up. */
-
- BFD_ASSERT (h->dynindx != -1);
-
- splt = bfd_get_section_by_name (dynobj, ".plt");
- srela = bfd_get_section_by_name (dynobj, ".rela.plt");
- BFD_ASSERT (splt != NULL && srela != NULL);
-
- /* We don't need to fill in the .plt. The solaris dynamic linker will
- fill it in. */
-
- /* Fill in the entry in the .rela.plt section. */
- rela.r_offset = (splt->output_section->vma
- + splt->output_offset
- + h->plt_offset);
- rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
- rela.r_addend = 0;
- bfd_elf32_swap_reloca_out (output_bfd, &rela,
- ((Elf32_External_Rela *) srela->contents
- + ((h->plt_offset - PLT_INITIAL_ENTRY_SIZE) / 8)));
-
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
- {
- /* Mark the symbol as undefined, rather than as defined in
- the .plt section. Leave the value alone. */
- sym->st_shndx = SHN_UNDEF;
- }
- }
-
- if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
- {
- asection *s;
- Elf_Internal_Rela rela;
-
- /* This symbols needs a copy reloc. Set it up. */
-
- #ifdef DEBUG
- fprintf (stderr, ", copy");
- #endif
-
- BFD_ASSERT (h->dynindx != -1);
-
- s = bfd_get_section_by_name (h->root.u.def.section->owner,
- ".rela.bss");
- BFD_ASSERT (s != NULL);
-
- 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_PPC_COPY);
- rela.r_addend = 0;
- bfd_elf32_swap_reloca_out (output_bfd, &rela,
- ((Elf32_External_Rela *) s->contents
- + s->reloc_count));
- ++s->reloc_count;
- }
-
- #ifdef DEBUG
- fprintf (stderr, "\n");
- #endif
-
- /* Mark some specially defined symbols as absolute. */
- if (strcmp (h->root.root.string, "_DYNAMIC") == 0
- || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
- || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
- sym->st_shndx = SHN_ABS;
-
- return true;
- }
-
-
- /* Finish up the dynamic sections. */
-
- static boolean
- ppc_elf_finish_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
- struct bfd_link_info *info;
- {
- asection *sdyn;
- bfd *dynobj = elf_hash_table (info)->dynobj;
- elf_linker_section_t *got = elf_linker_section (dynobj, LINKER_SECTION_GOT);
-
- #ifdef DEBUG
- fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
- #endif
-
- sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
-
- if (elf_hash_table (info)->dynamic_sections_created)
- {
- asection *splt;
- Elf32_External_Dyn *dyncon, *dynconend;
-
- splt = bfd_get_section_by_name (dynobj, ".plt");
- BFD_ASSERT (splt != NULL && sdyn != NULL);
-
- dyncon = (Elf32_External_Dyn *) sdyn->contents;
- dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
- for (; dyncon < dynconend; dyncon++)
- {
- Elf_Internal_Dyn dyn;
- const char *name;
- boolean size;
-
- bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
-
- switch (dyn.d_tag)
- {
- case DT_PLTGOT: name = ".plt"; size = false; break;
- case DT_PLTRELSZ: name = ".rela.plt"; size = true; break;
- case DT_JMPREL: name = ".rela.plt"; size = false; break;
- default: name = NULL; size = false; break;
- }
-
- if (name != NULL)
- {
- asection *s;
-
- s = bfd_get_section_by_name (output_bfd, name);
- if (s == NULL)
- dyn.d_un.d_val = 0;
- else
- {
- if (! size)
- dyn.d_un.d_ptr = s->vma;
- else
- {
- if (s->_cooked_size != 0)
- dyn.d_un.d_val = s->_cooked_size;
- else
- dyn.d_un.d_val = s->_raw_size;
- }
- }
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
- }
- }
- }
-
- /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
- easily find the address of the _GLOBAL_OFFSET_TABLE_. */
- if (got)
- {
- unsigned char *contents = got->section->contents + got->hole_offset;
- bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents);
-
- if (sdyn == NULL)
- bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4);
- else
- bfd_put_32 (output_bfd,
- sdyn->output_section->vma + sdyn->output_offset,
- contents+4);
-
- elf_section_data (got->section->output_section)->this_hdr.sh_entsize = 4;
- }
-
- if (info->shared)
- {
- asection *sdynsym;
- asection *s;
- Elf_Internal_Sym sym;
-
- /* Set up the section symbols for the output sections. */
-
- sdynsym = bfd_get_section_by_name (dynobj, ".dynsym");
- BFD_ASSERT (sdynsym != NULL);
-
- sym.st_size = 0;
- sym.st_name = 0;
- sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
- sym.st_other = 0;
-
- for (s = output_bfd->sections; s != NULL; s = s->next)
- {
- int indx;
-
- sym.st_value = s->vma;
-
- indx = elf_section_data (s)->this_idx;
- BFD_ASSERT (indx > 0);
- sym.st_shndx = indx;
-
- bfd_elf32_swap_symbol_out (output_bfd, &sym,
- (PTR) (((Elf32_External_Sym *)
- sdynsym->contents)
- + elf_section_data (s)->dynindx));
- }
-
- /* Set the sh_info field of the output .dynsym section to the
- index of the first global symbol. */
- elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
- bfd_count_sections (output_bfd) + 1;
- }
-
- return true;
- }
-
-
- /* The RELOCATE_SECTION function is called by the ELF backend linker
- to handle the relocations for a section.
-
- The relocs are always passed as Rela structures; if the section
- actually uses Rel structures, the r_addend field will always be
- zero.
-
- This function is responsible for adjust the section contents as
- necessary, and (if using Rela relocs and generating a
- relocateable 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 relocateable 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 boolean
- ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, local_syms, local_sections)
- 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;
- {
- Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
- bfd *dynobj = elf_hash_table (info)->dynobj;
- elf_linker_section_t *got = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_GOT) : NULL;
- elf_linker_section_t *sdata = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA) : NULL;
- elf_linker_section_t *sdata2 = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA2) : NULL;
- Elf_Internal_Rela *rel = relocs;
- Elf_Internal_Rela *relend = relocs + input_section->reloc_count;
- boolean ret = true;
- long insn;
-
- #ifdef DEBUG
- fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, %ld relocations%s\n",
- bfd_get_filename (input_bfd),
- bfd_section_name(input_bfd, input_section),
- (long)input_section->reloc_count,
- (info->relocateable) ? " (relocatable)" : "");
- #endif
-
- if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
- ppc_elf_howto_init ();
-
- for (; rel < relend; rel++)
- {
- enum ppc_reloc_type r_type = (enum ppc_reloc_type)ELF32_R_TYPE (rel->r_info);
- bfd_vma offset = rel->r_offset;
- bfd_vma addend = rel->r_addend;
- bfd_reloc_status_type r = bfd_reloc_other;
- Elf_Internal_Sym *sym = (Elf_Internal_Sym *)0;
- asection *sec = (asection *)0;
- struct elf_link_hash_entry *h = (struct elf_link_hash_entry *)0;
- const char *sym_name = (const char *)0;
- reloc_howto_type *howto;
- unsigned long r_symndx;
- bfd_vma relocation;
-
- /* Unknown relocation handling */
- if ((unsigned)r_type >= (unsigned)R_PPC_max || !ppc_elf_howto_table[(int)r_type])
- {
- (*_bfd_error_handler) ("%s: unknown relocation type %d",
- bfd_get_filename (input_bfd),
- (int)r_type);
-
- bfd_set_error (bfd_error_bad_value);
- ret = false;
- continue;
- }
-
- howto = ppc_elf_howto_table[(int)r_type];
- r_symndx = ELF32_R_SYM (rel->r_info);
-
- if (info->relocateable)
- {
- /* This is a relocateable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- if ((unsigned)ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- {
- sec = local_sections[r_symndx];
- addend = rel->r_addend += sec->output_offset + sym->st_value;
- }
- }
-
- #ifdef DEBUG
- fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n",
- howto->name,
- (int)r_type,
- r_symndx,
- (long)offset,
- (long)addend);
- #endif
- continue;
- }
-
- /* This is a final link. */
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- sym_name = "<local symbol>";
-
- relocation = (sec->output_section->vma
- + sec->output_offset
- + sym->st_value);
- }
- 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;
- sym_name = h->root.root.string;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- sec = h->root.u.def.section;
- if (!sec || !sec->output_section)
- {
- (*_bfd_error_handler) ("%s: Section in shared library for symbol %s\n",
- bfd_get_filename (input_bfd),
- sym_name);
- relocation = 0;
- }
- else
- relocation = (h->root.u.def.value
- + sec->output_section->vma
- + sec->output_offset);
- }
- else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
- else if (info->shared)
- relocation = 0;
- else
- {
- (*info->callbacks->undefined_symbol)(info,
- h->root.root.string,
- input_bfd,
- input_section,
- rel->r_offset);
- ret = false;
- continue;
- }
- }
-
- switch ((int)r_type)
- {
- default:
- (*_bfd_error_handler) ("%s: unknown relocation type %d for symbol %s",
- bfd_get_filename (input_bfd),
- (int)r_type, sym_name);
-
- bfd_set_error (bfd_error_bad_value);
- ret = false;
- continue;
-
- /* relocations that need no special processing */
- case (int)R_PPC_NONE:
- case (int)R_PPC_ADDR32:
- case (int)R_PPC_ADDR24:
- case (int)R_PPC_ADDR16:
- case (int)R_PPC_ADDR16_LO:
- case (int)R_PPC_ADDR16_HI:
- case (int)R_PPC_ADDR14:
- case (int)R_PPC_REL24:
- case (int)R_PPC_REL14:
- case (int)R_PPC_UADDR32:
- case (int)R_PPC_UADDR16:
- case (int)R_PPC_REL32:
- break;
-
- /* branch taken prediction relocations */
- case (int)R_PPC_ADDR14_BRTAKEN:
- case (int)R_PPC_REL14_BRTAKEN:
- insn = bfd_get_32 (output_bfd, contents + offset);
- if ((relocation - offset) & 0x8000)
- insn &= ~BRANCH_PREDICT_BIT;
- else
- insn |= BRANCH_PREDICT_BIT;
- bfd_put_32 (output_bfd, insn, contents + offset);
- break;
-
- /* branch not taken predicition relocations */
- case (int)R_PPC_ADDR14_BRNTAKEN:
- case (int)R_PPC_REL14_BRNTAKEN:
- insn = bfd_get_32 (output_bfd, contents + offset);
- if ((relocation - offset) & 0x8000)
- insn |= BRANCH_PREDICT_BIT;
- else
- insn &= ~BRANCH_PREDICT_BIT;
- bfd_put_32 (output_bfd, insn, contents + offset);
- break;
-
- /* GOT16 relocations */
- case (int)R_PPC_GOT16:
- case (int)R_PPC_GOT16_LO:
- case (int)R_PPC_GOT16_HI:
- case (int)R_PPC_GOT16_HA:
- relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
- got, h, relocation, rel,
- R_PPC_RELATIVE);
- break;
-
- /* Indirect .sdata relocation */
- case (int)R_PPC_EMB_SDAI16:
- BFD_ASSERT (sdata != NULL);
- relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
- sdata, h, relocation, rel,
- R_PPC_RELATIVE);
- break;
-
- /* Indirect .sdata2 relocation */
- case (int)R_PPC_EMB_SDA2I16:
- BFD_ASSERT (sdata2 != NULL);
- relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
- sdata2, h, relocation, rel,
- R_PPC_RELATIVE);
- break;
-
- /* Handle the TOC16 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. */
- case (int)R_PPC_TOC16: /* phony GOT16 relocations */
- BFD_ASSERT (sec != (asection *)0);
- 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)
-
- addend -= sec->output_section->vma + sec->output_offset + 0x8000;
- break;
-
- /* arithmetic adjust relocations */
- case (int)R_PPC_ADDR16_HA:
- BFD_ASSERT (sec != (asection *)0);
- addend += ((relocation + addend) & 0x8000) << 1;
- break;
-
- /* relocate against _SDA_BASE_ */
- case (int)R_PPC_SDAREL16:
- BFD_ASSERT (sec != (asection *)0);
- if (strcmp (bfd_get_section_name (abfd, sec), ".sdata") != 0
- && strcmp (bfd_get_section_name (abfd, sec), ".sbss") != 0)
- {
- (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
- bfd_get_filename (input_bfd),
- sym_name,
- ppc_elf_howto_table[ (int)r_type ]->name,
- bfd_get_section_name (abfd, sec));
-
- bfd_set_error (bfd_error_bad_value);
- ret = false;
- continue;
- }
- addend -= (sdata->sym_hash->root.u.def.value
- + sdata->sym_hash->root.u.def.section->output_section->vma
- + sdata->sym_hash->root.u.def.section->output_offset);
- break;
-
-
- /* relocate against _SDA2_BASE_ */
- case (int)R_PPC_EMB_SDA2REL:
- BFD_ASSERT (sec != (asection *)0);
- if (strcmp (bfd_get_section_name (abfd, sec), ".sdata2") != 0
- && strcmp (bfd_get_section_name (abfd, sec), ".sbss2") != 0)
- {
- (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
- bfd_get_filename (input_bfd),
- sym_name,
- ppc_elf_howto_table[ (int)r_type ]->name,
- bfd_get_section_name (abfd, sec));
-
- bfd_set_error (bfd_error_bad_value);
- ret = false;
- continue;
- }
- addend -= (sdata2->sym_hash->root.u.def.value
- + sdata2->sym_hash->root.u.def.section->output_section->vma
- + sdata2->sym_hash->root.u.def.section->output_offset);
- break;
-
-
- /* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */
- case (int)R_PPC_EMB_SDA21:
- case (int)R_PPC_EMB_RELSDA:
- {
- const char *name = bfd_get_section_name (abfd, sec);
- int reg;
-
- BFD_ASSERT (sec != (asection *)0);
- if (strcmp (name, ".sdata") == 0 || strcmp (name, ".sbss") == 0)
- {
- reg = 13;
- addend -= (sdata->sym_hash->root.u.def.value
- + sdata->sym_hash->root.u.def.section->output_section->vma
- + sdata->sym_hash->root.u.def.section->output_offset);
- }
-
- else if (strcmp (name, ".sdata2") == 0 || strcmp (name, ".sbss2") == 0)
- {
- reg = 2;
- addend -= (sdata2->sym_hash->root.u.def.value
- + sdata2->sym_hash->root.u.def.section->output_section->vma
- + sdata2->sym_hash->root.u.def.section->output_offset);
- }
-
- else if (strcmp (name, ".PPC.EMB.sdata0") == 0 || strcmp (name, ".PPC.EMB.sbss0") == 0)
- {
- reg = 0;
- }
-
- else
- {
- (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
- bfd_get_filename (input_bfd),
- sym_name,
- ppc_elf_howto_table[ (int)r_type ]->name,
- bfd_get_section_name (abfd, sec));
-
- bfd_set_error (bfd_error_bad_value);
- ret = false;
- continue;
- }
-
- if (r_type == R_PPC_EMB_SDA21)
- { /* fill in register field */
- insn = bfd_get_32 (output_bfd, contents + offset);
- insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
- bfd_put_32 (output_bfd, insn, contents + offset);
- }
- }
- break;
-
- /* Relocate against the beginning of the section */
- case (int)R_PPC_SECTOFF:
- case (int)R_PPC_SECTOFF_LO:
- case (int)R_PPC_SECTOFF_HI:
- BFD_ASSERT (sec != (asection *)0);
- addend -= sec->output_section->vma;
- break;
-
- case (int)R_PPC_SECTOFF_HA:
- BFD_ASSERT (sec != (asection *)0);
- addend -= sec->output_section->vma;
- addend += ((relocation + addend) & 0x8000) << 1;
- break;
-
- /* Negative relocations */
- case (int)R_PPC_EMB_NADDR32:
- case (int)R_PPC_EMB_NADDR16:
- case (int)R_PPC_EMB_NADDR16_LO:
- case (int)R_PPC_EMB_NADDR16_HI:
- addend -= 2*relocation;
- break;
-
- case (int)R_PPC_EMB_NADDR16_HA:
- addend -= 2*relocation;
- addend += ((relocation + addend) & 0x8000) << 1;
- break;
-
- /* NOP relocation that prevents garbage collecting linkers from omitting a
- reference. */
- case (int)R_PPC_EMB_MRKREF:
- continue;
-
- case (int)R_PPC_PLTREL24:
- case (int)R_PPC_COPY:
- case (int)R_PPC_GLOB_DAT:
- case (int)R_PPC_JMP_SLOT:
- case (int)R_PPC_RELATIVE:
- case (int)R_PPC_LOCAL24PC:
- case (int)R_PPC_PLT32:
- case (int)R_PPC_PLTREL32:
- case (int)R_PPC_PLT16_LO:
- case (int)R_PPC_PLT16_HI:
- case (int)R_PPC_PLT16_HA:
- case (int)R_PPC_EMB_RELSEC16:
- case (int)R_PPC_EMB_RELST_LO:
- case (int)R_PPC_EMB_RELST_HI:
- case (int)R_PPC_EMB_RELST_HA:
- case (int)R_PPC_EMB_BIT_FLD:
- (*_bfd_error_handler) ("%s: Relocation %s is not yet supported for symbol %s.",
- bfd_get_filename (input_bfd),
- ppc_elf_howto_table[ (int)r_type ]->name,
- sym_name);
-
- bfd_set_error (bfd_error_invalid_operation);
- ret = false;
- continue;
- }
-
-
- #ifdef DEBUG
- fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n",
- howto->name,
- (int)r_type,
- sym_name,
- r_symndx,
- (long)offset,
- (long)addend);
- #endif
-
- r = _bfd_final_link_relocate (howto,
- input_bfd,
- input_section,
- contents,
- offset,
- relocation,
- addend);
-
- if (r != bfd_reloc_ok)
- {
- ret = false;
- switch (r)
- {
- default:
- break;
-
- case bfd_reloc_overflow:
- {
- const char *name;
-
- 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)
- break;
-
- if (*name == '\0')
- name = bfd_section_name (input_bfd, sec);
- }
-
- (*info->callbacks->reloc_overflow)(info,
- name,
- howto->name,
- (bfd_vma) 0,
- input_bfd,
- input_section,
- offset);
- }
- break;
-
- }
- }
- }
-
-
- #ifdef DEBUG
- fprintf (stderr, "\n");
- #endif
-
- return ret;
- }
-
-
- #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
- #define TARGET_LITTLE_NAME "elf32-powerpcle"
- #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 ppc_elf_info_to_howto
-
- #ifdef EM_CYGNUS_POWERPC
- #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
- #endif
-
- #ifdef EM_PPC_OLD
- #define ELF_MACHINE_ALT2 EM_PPC_OLD
- #endif
-
- #define bfd_elf32_bfd_copy_private_bfd_data ppc_elf_copy_private_bfd_data
- #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
- #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
- #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
- #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
- #define elf_backend_relocate_section ppc_elf_relocate_section
- #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
- #define elf_backend_check_relocs ppc_elf_check_relocs
- #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
- #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
- #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
- #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
- #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
- #define elf_backend_fake_sections ppc_elf_fake_sections
- #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
- #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
-
- #include "elf32-target.h"
-