| /* MIPS-specific support for 64-bit ELF |
| Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 |
| Free Software Foundation, Inc. |
| Ian Lance Taylor, Cygnus Support |
| Linker support added by Mark Mitchell, CodeSourcery, LLC. |
| <mark@codesourcery.com> |
| |
| 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 supports the 64-bit MIPS ELF ABI. |
| |
| The MIPS 64-bit ELF ABI uses an unusual reloc format. This file |
| overrides the usual ELF reloc handling, and handles reading and |
| writing the relocations here. */ |
| |
| /* TODO: Many things are unsupported, even if there is some code for it |
| . (which was mostly stolen from elf32-mips.c and slightly adapted). |
| . |
| . - Relocation handling for REL relocs is wrong in many cases and |
| . generally untested. |
| . - Relocation handling for RELA relocs related to GOT support are |
| . also likely to be wrong. |
| . - Support for MIPS16 is untested. |
| . - Combined relocs with RSS_* entries are unsupported. |
| . - The whole GOT handling for NewABI is missing, some parts of |
| . the OldABI version is still lying around and should be removed. |
| */ |
| |
| #include "bfd.h" |
| #include "sysdep.h" |
| #include "libbfd.h" |
| #include "aout/ar.h" |
| #include "bfdlink.h" |
| #include "genlink.h" |
| #include "elf-bfd.h" |
| #include "elfxx-mips.h" |
| #include "elf/mips.h" |
| |
| /* Get the ECOFF swapping routines. The 64-bit ABI is not supposed to |
| use ECOFF. However, we support it anyhow for an easier changeover. */ |
| #include "coff/sym.h" |
| #include "coff/symconst.h" |
| #include "coff/internal.h" |
| #include "coff/ecoff.h" |
| /* The 64 bit versions of the mdebug data structures are in alpha.h. */ |
| #include "coff/alpha.h" |
| #define ECOFF_SIGNED_64 |
| #include "ecoffswap.h" |
| |
| static void mips_elf64_swap_reloc_in |
| PARAMS ((bfd *, const Elf64_Mips_External_Rel *, |
| Elf64_Mips_Internal_Rela *)); |
| static void mips_elf64_swap_reloca_in |
| PARAMS ((bfd *, const Elf64_Mips_External_Rela *, |
| Elf64_Mips_Internal_Rela *)); |
| static void mips_elf64_swap_reloc_out |
| PARAMS ((bfd *, const Elf64_Mips_Internal_Rela *, |
| Elf64_Mips_External_Rel *)); |
| static void mips_elf64_swap_reloca_out |
| PARAMS ((bfd *, const Elf64_Mips_Internal_Rela *, |
| Elf64_Mips_External_Rela *)); |
| static void mips_elf64_be_swap_reloc_in |
| PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rela *)); |
| static void mips_elf64_be_swap_reloc_out |
| PARAMS ((bfd *, const Elf_Internal_Rela *, bfd_byte *)); |
| static void mips_elf64_be_swap_reloca_in |
| PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rela *)); |
| static void mips_elf64_be_swap_reloca_out |
| PARAMS ((bfd *, const Elf_Internal_Rela *, bfd_byte *)); |
| static reloc_howto_type *bfd_elf64_bfd_reloc_type_lookup |
| PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| static reloc_howto_type *mips_elf64_rtype_to_howto |
| PARAMS ((unsigned int, bfd_boolean)); |
| static void mips_elf64_info_to_howto_rel |
| PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
| static void mips_elf64_info_to_howto_rela |
| PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
| static long mips_elf64_get_reloc_upper_bound |
| PARAMS ((bfd *, asection *)); |
| static long mips_elf64_canonicalize_reloc |
| PARAMS ((bfd *, asection *, arelent **, asymbol **)); |
| static long mips_elf64_get_dynamic_reloc_upper_bound PARAMS ((bfd *)); |
| static long mips_elf64_canonicalize_dynamic_reloc |
| PARAMS ((bfd *, arelent **, asymbol **)); |
| static bfd_boolean mips_elf64_slurp_one_reloc_table |
| PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, bfd_size_type, |
| arelent *, asymbol **, bfd_boolean)); |
| static bfd_boolean mips_elf64_slurp_reloc_table |
| PARAMS ((bfd *, asection *, asymbol **, bfd_boolean)); |
| static void mips_elf64_write_relocs |
| PARAMS ((bfd *, asection *, PTR)); |
| static void mips_elf64_write_rel |
| PARAMS((bfd *, asection *, Elf_Internal_Shdr *, int *, PTR)); |
| static void mips_elf64_write_rela |
| PARAMS((bfd *, asection *, Elf_Internal_Shdr *, int *, PTR)); |
| static bfd_reloc_status_type mips_elf64_hi16_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static bfd_reloc_status_type mips_elf64_gprel16_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static bfd_reloc_status_type mips_elf64_literal_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static bfd_reloc_status_type mips_elf64_gprel32_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static bfd_reloc_status_type mips_elf64_shift6_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static bfd_reloc_status_type mips_elf64_got16_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static bfd_reloc_status_type mips16_jump_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static bfd_reloc_status_type mips16_gprel_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| static bfd_boolean mips_elf64_assign_gp |
| PARAMS ((bfd *, bfd_vma *)); |
| static bfd_reloc_status_type mips_elf64_final_gp |
| PARAMS ((bfd *, asymbol *, bfd_boolean, char **, bfd_vma *)); |
| static bfd_boolean mips_elf64_object_p |
| PARAMS ((bfd *)); |
| static irix_compat_t elf64_mips_irix_compat |
| PARAMS ((bfd *)); |
| static bfd_boolean elf64_mips_grok_prstatus |
| PARAMS ((bfd *, Elf_Internal_Note *)); |
| static bfd_boolean elf64_mips_grok_psinfo |
| PARAMS ((bfd *, Elf_Internal_Note *)); |
| |
| extern const bfd_target bfd_elf64_bigmips_vec; |
| extern const bfd_target bfd_elf64_littlemips_vec; |
| |
| /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
| from smaller values. Start with zero, widen, *then* decrement. */ |
| #define MINUS_ONE (((bfd_vma)0) - 1) |
| |
| /* The number of local .got entries we reserve. */ |
| #define MIPS_RESERVED_GOTNO (2) |
| |
| /* The relocation table used for SHT_REL sections. */ |
| |
| static reloc_howto_type mips_elf64_howto_table_rel[] = |
| { |
| /* No relocation. */ |
| HOWTO (R_MIPS_NONE, /* type */ |
| 0, /* rightshift */ |
| 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 0, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_NONE", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 16 bit relocation. */ |
| HOWTO (R_MIPS_16, /* 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_MIPS_16", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 32 bit relocation. */ |
| HOWTO (R_MIPS_32, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_32", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 32 bit symbol relative relocation. */ |
| HOWTO (R_MIPS_REL32, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_REL32", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 26 bit jump address. */ |
| HOWTO (R_MIPS_26, /* type */ |
| 2, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 26, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| /* This needs complex overflow |
| detection, because the upper 36 |
| bits must match the PC + 4. */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_26", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x03ffffff, /* src_mask */ |
| 0x03ffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for NewABI REL. |
| However, the native IRIX6 tools use them, so we try our best. */ |
| |
| /* High 16 bits of symbol value. */ |
| HOWTO (R_MIPS_HI16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| mips_elf64_hi16_reloc, /* special_function */ |
| "R_MIPS_HI16", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Low 16 bits of symbol value. */ |
| HOWTO (R_MIPS_LO16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_LO16", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* GP relative reference. */ |
| HOWTO (R_MIPS_GPREL16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| mips_elf64_gprel16_reloc, /* special_function */ |
| "R_MIPS_GPREL16", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Reference to literal section. */ |
| HOWTO (R_MIPS_LITERAL, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| mips_elf64_literal_reloc, /* special_function */ |
| "R_MIPS_LITERAL", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Reference to global offset table. */ |
| HOWTO (R_MIPS_GOT16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| mips_elf64_got16_reloc, /* special_function */ |
| "R_MIPS_GOT16", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 16 bit PC relative reference. */ |
| HOWTO (R_MIPS_PC16, /* 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_MIPS_PC16", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| TRUE), /* pcrel_offset */ |
| |
| /* 16 bit call through global offset table. */ |
| HOWTO (R_MIPS_CALL16, /* 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_MIPS_CALL16", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 32 bit GP relative reference. */ |
| HOWTO (R_MIPS_GPREL32, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| mips_elf64_gprel32_reloc, /* special_function */ |
| "R_MIPS_GPREL32", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| EMPTY_HOWTO (13), |
| EMPTY_HOWTO (14), |
| EMPTY_HOWTO (15), |
| |
| /* A 5 bit shift field. */ |
| HOWTO (R_MIPS_SHIFT5, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 5, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 6, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_SHIFT5", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x000007c0, /* src_mask */ |
| 0x000007c0, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* A 6 bit shift field. */ |
| HOWTO (R_MIPS_SHIFT6, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 6, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 6, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| mips_elf64_shift6_reloc, /* special_function */ |
| "R_MIPS_SHIFT6", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x000007c4, /* src_mask */ |
| 0x000007c4, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 64 bit relocation. */ |
| HOWTO (R_MIPS_64, /* type */ |
| 0, /* rightshift */ |
| 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 64, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_64", /* name */ |
| TRUE, /* partial_inplace */ |
| MINUS_ONE, /* src_mask */ |
| MINUS_ONE, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Displacement in the global offset table. */ |
| HOWTO (R_MIPS_GOT_DISP, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_DISP", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Displacement to page pointer in the global offset table. */ |
| HOWTO (R_MIPS_GOT_PAGE, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_PAGE", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Offset from page pointer in the global offset table. */ |
| HOWTO (R_MIPS_GOT_OFST, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_OFST", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* High 16 bits of displacement in global offset table. */ |
| HOWTO (R_MIPS_GOT_HI16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_HI16", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Low 16 bits of displacement in global offset table. */ |
| HOWTO (R_MIPS_GOT_LO16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_LO16", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 64 bit substraction. */ |
| HOWTO (R_MIPS_SUB, /* type */ |
| 0, /* rightshift */ |
| 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 64, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_SUB", /* name */ |
| TRUE, /* partial_inplace */ |
| MINUS_ONE, /* src_mask */ |
| MINUS_ONE, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Insert the addend as an instruction. */ |
| /* FIXME: Not handled correctly. */ |
| HOWTO (R_MIPS_INSERT_A, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_INSERT_A", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Insert the addend as an instruction, and change all relocations |
| to refer to the old instruction at the address. */ |
| /* FIXME: Not handled correctly. */ |
| HOWTO (R_MIPS_INSERT_B, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_INSERT_B", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Delete a 32 bit instruction. */ |
| /* FIXME: Not handled correctly. */ |
| HOWTO (R_MIPS_DELETE, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_DELETE", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* The MIPS ELF64 ABI Draft wants us to support these for REL relocations. |
| We don't, because |
| a) It means building the addend from a R_MIPS_HIGHEST/R_MIPS_HIGHER/ |
| R_MIPS_HI16/R_MIPS_LO16 sequence with varying ordering, using |
| fallable heuristics. |
| b) No other NewABI toolchain actually emits such relocations. */ |
| EMPTY_HOWTO (R_MIPS_HIGHER), |
| EMPTY_HOWTO (R_MIPS_HIGHEST), |
| |
| /* High 16 bits of displacement in global offset table. */ |
| HOWTO (R_MIPS_CALL_HI16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_CALL_HI16", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Low 16 bits of displacement in global offset table. */ |
| HOWTO (R_MIPS_CALL_LO16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_CALL_LO16", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Section displacement, used by an associated event location section. */ |
| HOWTO (R_MIPS_SCN_DISP, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_SCN_DISP", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_MIPS_REL16, /* 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_MIPS_REL16", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffff, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* These two are obsolete. */ |
| EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), |
| EMPTY_HOWTO (R_MIPS_PJUMP), |
| |
| /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section. |
| It must be used for multigot GOT's (and only there). */ |
| HOWTO (R_MIPS_RELGOT, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_RELGOT", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Protected jump conversion. This is an optimization hint. No |
| relocation is required for correctness. */ |
| HOWTO (R_MIPS_JALR, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_JALR", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x00000000, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| }; |
| |
| /* The relocation table used for SHT_RELA sections. */ |
| |
| static reloc_howto_type mips_elf64_howto_table_rela[] = |
| { |
| /* No relocation. */ |
| HOWTO (R_MIPS_NONE, /* type */ |
| 0, /* rightshift */ |
| 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 0, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_NONE", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 16 bit relocation. */ |
| HOWTO (R_MIPS_16, /* 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_MIPS_16", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 32 bit relocation. */ |
| HOWTO (R_MIPS_32, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_32", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 32 bit symbol relative relocation. */ |
| HOWTO (R_MIPS_REL32, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_REL32", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 26 bit jump address. */ |
| HOWTO (R_MIPS_26, /* type */ |
| 2, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 26, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| /* This needs complex overflow |
| detection, because the upper 36 |
| bits must match the PC + 4. */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_26", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x03ffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* High 16 bits of symbol value. */ |
| HOWTO (R_MIPS_HI16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_HI16", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Low 16 bits of symbol value. */ |
| HOWTO (R_MIPS_LO16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_LO16", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* GP relative reference. */ |
| HOWTO (R_MIPS_GPREL16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| mips_elf64_gprel16_reloc, /* special_function */ |
| "R_MIPS_GPREL16", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Reference to literal section. */ |
| HOWTO (R_MIPS_LITERAL, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| mips_elf64_literal_reloc, /* special_function */ |
| "R_MIPS_LITERAL", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Reference to global offset table. */ |
| HOWTO (R_MIPS_GOT16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| mips_elf64_got16_reloc, /* special_function */ |
| "R_MIPS_GOT16", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 16 bit PC relative reference. */ |
| HOWTO (R_MIPS_PC16, /* 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_MIPS_PC16", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| TRUE), /* pcrel_offset */ |
| |
| /* 16 bit call through global offset table. */ |
| HOWTO (R_MIPS_CALL16, /* 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_MIPS_CALL16", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 32 bit GP relative reference. */ |
| HOWTO (R_MIPS_GPREL32, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| mips_elf64_gprel32_reloc, /* special_function */ |
| "R_MIPS_GPREL32", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| EMPTY_HOWTO (13), |
| EMPTY_HOWTO (14), |
| EMPTY_HOWTO (15), |
| |
| /* A 5 bit shift field. */ |
| HOWTO (R_MIPS_SHIFT5, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 5, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 6, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_SHIFT5", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x000007c0, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* A 6 bit shift field. */ |
| HOWTO (R_MIPS_SHIFT6, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 6, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 6, /* bitpos */ |
| complain_overflow_bitfield, /* complain_on_overflow */ |
| mips_elf64_shift6_reloc, /* special_function */ |
| "R_MIPS_SHIFT6", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x000007c4, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 64 bit relocation. */ |
| HOWTO (R_MIPS_64, /* type */ |
| 0, /* rightshift */ |
| 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 64, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_64", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| MINUS_ONE, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Displacement in the global offset table. */ |
| HOWTO (R_MIPS_GOT_DISP, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_DISP", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Displacement to page pointer in the global offset table. */ |
| HOWTO (R_MIPS_GOT_PAGE, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_PAGE", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Offset from page pointer in the global offset table. */ |
| HOWTO (R_MIPS_GOT_OFST, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_OFST", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* High 16 bits of displacement in global offset table. */ |
| HOWTO (R_MIPS_GOT_HI16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_HI16", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Low 16 bits of displacement in global offset table. */ |
| HOWTO (R_MIPS_GOT_LO16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_GOT_LO16", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 64 bit substraction. */ |
| HOWTO (R_MIPS_SUB, /* type */ |
| 0, /* rightshift */ |
| 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 64, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_SUB", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| MINUS_ONE, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Insert the addend as an instruction. */ |
| /* FIXME: Not handled correctly. */ |
| HOWTO (R_MIPS_INSERT_A, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_INSERT_A", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Insert the addend as an instruction, and change all relocations |
| to refer to the old instruction at the address. */ |
| /* FIXME: Not handled correctly. */ |
| HOWTO (R_MIPS_INSERT_B, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_INSERT_B", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Delete a 32 bit instruction. */ |
| /* FIXME: Not handled correctly. */ |
| HOWTO (R_MIPS_DELETE, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_DELETE", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Get the higher value of a 64 bit addend. */ |
| HOWTO (R_MIPS_HIGHER, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_HIGHER", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Get the highest value of a 64 bit addend. */ |
| HOWTO (R_MIPS_HIGHEST, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_HIGHEST", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* High 16 bits of displacement in global offset table. */ |
| HOWTO (R_MIPS_CALL_HI16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_CALL_HI16", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Low 16 bits of displacement in global offset table. */ |
| HOWTO (R_MIPS_CALL_LO16, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_CALL_LO16", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Section displacement, used by an associated event location section. */ |
| HOWTO (R_MIPS_SCN_DISP, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_SCN_DISP", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_MIPS_REL16, /* 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_MIPS_REL16", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* These two are obsolete. */ |
| EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), |
| EMPTY_HOWTO (R_MIPS_PJUMP), |
| |
| /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section. |
| It must be used for multigot GOT's (and only there). */ |
| HOWTO (R_MIPS_RELGOT, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_RELGOT", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Protected jump conversion. This is an optimization hint. No |
| relocation is required for correctness. */ |
| HOWTO (R_MIPS_JALR, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_MIPS_JALR", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0x00000000, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| }; |
| |
| /* The reloc used for the mips16 jump instruction. */ |
| static reloc_howto_type elf_mips16_jump_howto = |
| HOWTO (R_MIPS16_26, /* type */ |
| 2, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 26, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| /* This needs complex overflow |
| detection, because the upper four |
| bits must match the PC. */ |
| mips16_jump_reloc, /* special_function */ |
| "R_MIPS16_26", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x3ffffff, /* src_mask */ |
| 0x3ffffff, /* dst_mask */ |
| FALSE); /* pcrel_offset */ |
| |
| /* The reloc used for the mips16 gprel instruction. */ |
| static reloc_howto_type elf_mips16_gprel_howto = |
| HOWTO (R_MIPS16_GPREL, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| mips16_gprel_reloc, /* special_function */ |
| "R_MIPS16_GPREL", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x07ff001f, /* src_mask */ |
| 0x07ff001f, /* dst_mask */ |
| FALSE); /* pcrel_offset */ |
| |
| /* GNU extension to record C++ vtable hierarchy */ |
| static reloc_howto_type elf_mips_gnu_vtinherit_howto = |
| HOWTO (R_MIPS_GNU_VTINHERIT, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 0, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| NULL, /* special_function */ |
| "R_MIPS_GNU_VTINHERIT", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| FALSE); /* pcrel_offset */ |
| |
| /* GNU extension to record C++ vtable member usage */ |
| static reloc_howto_type elf_mips_gnu_vtentry_howto = |
| HOWTO (R_MIPS_GNU_VTENTRY, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 0, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_dont, /* complain_on_overflow */ |
| _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| "R_MIPS_GNU_VTENTRY", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| FALSE); /* pcrel_offset */ |
| |
| /* Swap in a MIPS 64-bit Rel reloc. */ |
| |
| static void |
| mips_elf64_swap_reloc_in (abfd, src, dst) |
| bfd *abfd; |
| const Elf64_Mips_External_Rel *src; |
| Elf64_Mips_Internal_Rela *dst; |
| { |
| dst->r_offset = H_GET_64 (abfd, src->r_offset); |
| dst->r_sym = H_GET_32 (abfd, src->r_sym); |
| dst->r_ssym = H_GET_8 (abfd, src->r_ssym); |
| dst->r_type3 = H_GET_8 (abfd, src->r_type3); |
| dst->r_type2 = H_GET_8 (abfd, src->r_type2); |
| dst->r_type = H_GET_8 (abfd, src->r_type); |
| dst->r_addend = 0; |
| } |
| |
| /* Swap in a MIPS 64-bit Rela reloc. */ |
| |
| static void |
| mips_elf64_swap_reloca_in (abfd, src, dst) |
| bfd *abfd; |
| const Elf64_Mips_External_Rela *src; |
| Elf64_Mips_Internal_Rela *dst; |
| { |
| dst->r_offset = H_GET_64 (abfd, src->r_offset); |
| dst->r_sym = H_GET_32 (abfd, src->r_sym); |
| dst->r_ssym = H_GET_8 (abfd, src->r_ssym); |
| dst->r_type3 = H_GET_8 (abfd, src->r_type3); |
| dst->r_type2 = H_GET_8 (abfd, src->r_type2); |
| dst->r_type = H_GET_8 (abfd, src->r_type); |
| dst->r_addend = H_GET_S64 (abfd, src->r_addend); |
| } |
| |
| /* Swap out a MIPS 64-bit Rel reloc. */ |
| |
| static void |
| mips_elf64_swap_reloc_out (abfd, src, dst) |
| bfd *abfd; |
| const Elf64_Mips_Internal_Rela *src; |
| Elf64_Mips_External_Rel *dst; |
| { |
| H_PUT_64 (abfd, src->r_offset, dst->r_offset); |
| H_PUT_32 (abfd, src->r_sym, dst->r_sym); |
| H_PUT_8 (abfd, src->r_ssym, dst->r_ssym); |
| H_PUT_8 (abfd, src->r_type3, dst->r_type3); |
| H_PUT_8 (abfd, src->r_type2, dst->r_type2); |
| H_PUT_8 (abfd, src->r_type, dst->r_type); |
| } |
| |
| /* Swap out a MIPS 64-bit Rela reloc. */ |
| |
| static void |
| mips_elf64_swap_reloca_out (abfd, src, dst) |
| bfd *abfd; |
| const Elf64_Mips_Internal_Rela *src; |
| Elf64_Mips_External_Rela *dst; |
| { |
| H_PUT_64 (abfd, src->r_offset, dst->r_offset); |
| H_PUT_32 (abfd, src->r_sym, dst->r_sym); |
| H_PUT_8 (abfd, src->r_ssym, dst->r_ssym); |
| H_PUT_8 (abfd, src->r_type3, dst->r_type3); |
| H_PUT_8 (abfd, src->r_type2, dst->r_type2); |
| H_PUT_8 (abfd, src->r_type, dst->r_type); |
| H_PUT_S64 (abfd, src->r_addend, dst->r_addend); |
| } |
| |
| /* Swap in a MIPS 64-bit Rel reloc. */ |
| |
| static void |
| mips_elf64_be_swap_reloc_in (abfd, src, dst) |
| bfd *abfd; |
| const bfd_byte *src; |
| Elf_Internal_Rela *dst; |
| { |
| Elf64_Mips_Internal_Rela mirel; |
| |
| mips_elf64_swap_reloc_in (abfd, |
| (const Elf64_Mips_External_Rel *) src, |
| &mirel); |
| |
| dst[0].r_offset = mirel.r_offset; |
| dst[0].r_info = ELF64_R_INFO (mirel.r_sym, mirel.r_type); |
| dst[0].r_addend = 0; |
| dst[1].r_offset = mirel.r_offset; |
| dst[1].r_info = ELF64_R_INFO (mirel.r_ssym, mirel.r_type2); |
| dst[1].r_addend = 0; |
| dst[2].r_offset = mirel.r_offset; |
| dst[2].r_info = ELF64_R_INFO (STN_UNDEF, mirel.r_type3); |
| dst[2].r_addend = 0; |
| } |
| |
| /* Swap in a MIPS 64-bit Rela reloc. */ |
| |
| static void |
| mips_elf64_be_swap_reloca_in (abfd, src, dst) |
| bfd *abfd; |
| const bfd_byte *src; |
| Elf_Internal_Rela *dst; |
| { |
| Elf64_Mips_Internal_Rela mirela; |
| |
| mips_elf64_swap_reloca_in (abfd, |
| (const Elf64_Mips_External_Rela *) src, |
| &mirela); |
| |
| dst[0].r_offset = mirela.r_offset; |
| dst[0].r_info = ELF64_R_INFO (mirela.r_sym, mirela.r_type); |
| dst[0].r_addend = mirela.r_addend; |
| dst[1].r_offset = mirela.r_offset; |
| dst[1].r_info = ELF64_R_INFO (mirela.r_ssym, mirela.r_type2); |
| dst[1].r_addend = 0; |
| dst[2].r_offset = mirela.r_offset; |
| dst[2].r_info = ELF64_R_INFO (STN_UNDEF, mirela.r_type3); |
| dst[2].r_addend = 0; |
| } |
| |
| /* Swap out a MIPS 64-bit Rel reloc. */ |
| |
| static void |
| mips_elf64_be_swap_reloc_out (abfd, src, dst) |
| bfd *abfd; |
| const Elf_Internal_Rela *src; |
| bfd_byte *dst; |
| { |
| Elf64_Mips_Internal_Rela mirel; |
| |
| mirel.r_offset = src[0].r_offset; |
| BFD_ASSERT(src[0].r_offset == src[1].r_offset); |
| #if 0 |
| BFD_ASSERT(src[0].r_offset == src[2].r_offset); |
| #endif |
| |
| mirel.r_type = ELF64_MIPS_R_TYPE (src[0].r_info); |
| mirel.r_sym = ELF64_R_SYM (src[0].r_info); |
| mirel.r_type2 = ELF64_MIPS_R_TYPE (src[1].r_info); |
| mirel.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info); |
| mirel.r_type3 = ELF64_MIPS_R_TYPE (src[2].r_info); |
| |
| mips_elf64_swap_reloc_out (abfd, &mirel, |
| (Elf64_Mips_External_Rel *) dst); |
| } |
| |
| /* Swap out a MIPS 64-bit Rela reloc. */ |
| |
| static void |
| mips_elf64_be_swap_reloca_out (abfd, src, dst) |
| bfd *abfd; |
| const Elf_Internal_Rela *src; |
| bfd_byte *dst; |
| { |
| Elf64_Mips_Internal_Rela mirela; |
| |
| mirela.r_offset = src[0].r_offset; |
| BFD_ASSERT(src[0].r_offset == src[1].r_offset); |
| BFD_ASSERT(src[0].r_offset == src[2].r_offset); |
| |
| mirela.r_type = ELF64_MIPS_R_TYPE (src[0].r_info); |
| mirela.r_sym = ELF64_R_SYM (src[0].r_info); |
| mirela.r_addend = src[0].r_addend; |
| BFD_ASSERT(src[1].r_addend == 0); |
| BFD_ASSERT(src[2].r_addend == 0); |
| |
| mirela.r_type2 = ELF64_MIPS_R_TYPE (src[1].r_info); |
| mirela.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info); |
| mirela.r_type3 = ELF64_MIPS_R_TYPE (src[2].r_info); |
| |
| mips_elf64_swap_reloca_out (abfd, &mirela, |
| (Elf64_Mips_External_Rela *) dst); |
| } |
| |
| /* Do a R_MIPS_HI16 relocation. */ |
| |
| static bfd_reloc_status_type |
| mips_elf64_hi16_reloc (abfd, reloc_entry, symbol, data, input_section, |
| output_bfd, error_message) |
| bfd *abfd ATTRIBUTE_UNUSED; |
| arelent *reloc_entry; |
| asymbol *symbol; |
| PTR data ATTRIBUTE_UNUSED; |
| asection *input_section; |
| bfd *output_bfd; |
| char **error_message ATTRIBUTE_UNUSED; |
| { |
| /* If we're relocating, and this is an external symbol, we don't |
| want to change anything. */ |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && (! reloc_entry->howto->partial_inplace |
| || reloc_entry->addend == 0)) |
| { |
| reloc_entry->address += input_section->output_offset; |
| return bfd_reloc_ok; |
| } |
| |
| if (((reloc_entry->addend & 0xffff) + 0x8000) & ~0xffff) |
| reloc_entry->addend += 0x8000; |
| |
| return bfd_reloc_continue; |
| } |
| |
| /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset |
| table used for PIC code. If the symbol is an external symbol, the |
| instruction is modified to contain the offset of the appropriate |
| entry in the global offset table. If the symbol is a section |
| symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit |
| addends are combined to form the real addend against the section |
| symbol; the GOT16 is modified to contain the offset of an entry in |
| the global offset table, and the LO16 is modified to offset it |
| appropriately. Thus an offset larger than 16 bits requires a |
| modified value in the global offset table. |
| |
| This implementation suffices for the assembler, but the linker does |
| not yet know how to create global offset tables. */ |
| |
| static bfd_reloc_status_type |
| mips_elf64_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; |
| { |
| /* If we're relocating, and this is a local symbol, we can handle it |
| just like an R_MIPS_HI16. */ |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) != 0) |
| return mips_elf64_hi16_reloc (abfd, reloc_entry, symbol, data, |
| input_section, output_bfd, error_message); |
| |
| |
| /* Otherwise we try to handle it as R_MIPS_GOT_DISP. */ |
| return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| input_section, output_bfd, error_message); |
| } |
| |
| /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a |
| dangerous relocation. */ |
| |
| static bfd_boolean |
| mips_elf64_assign_gp (output_bfd, pgp) |
| bfd *output_bfd; |
| bfd_vma *pgp; |
| { |
| unsigned int count; |
| asymbol **sym; |
| unsigned int i; |
| |
| /* If we've already figured out what GP will be, just return it. */ |
| *pgp = _bfd_get_gp_value (output_bfd); |
| if (*pgp) |
| return TRUE; |
| |
| count = bfd_get_symcount (output_bfd); |
| sym = bfd_get_outsymbols (output_bfd); |
| |
| /* The linker script will have created a symbol named `_gp' with the |
| appropriate value. */ |
| if (sym == (asymbol **) NULL) |
| i = count; |
| else |
| { |
| for (i = 0; i < count; i++, sym++) |
| { |
| register const char *name; |
| |
| name = bfd_asymbol_name (*sym); |
| if (*name == '_' && strcmp (name, "_gp") == 0) |
| { |
| *pgp = bfd_asymbol_value (*sym); |
| _bfd_set_gp_value (output_bfd, *pgp); |
| break; |
| } |
| } |
| } |
| |
| if (i >= count) |
| { |
| /* Only get the error once. */ |
| *pgp = 4; |
| _bfd_set_gp_value (output_bfd, *pgp); |
| return FALSE; |
| } |
| |
| return TRUE; |
| } |
| |
| /* We have to figure out the gp value, so that we can adjust the |
| symbol value correctly. We look up the symbol _gp in the output |
| BFD. If we can't find it, we're stuck. We cache it in the ELF |
| target data. We don't need to adjust the symbol value for an |
| external symbol if we are producing relocateable output. */ |
| |
| static bfd_reloc_status_type |
| mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message, pgp) |
| bfd *output_bfd; |
| asymbol *symbol; |
| bfd_boolean relocateable; |
| char **error_message; |
| bfd_vma *pgp; |
| { |
| if (bfd_is_und_section (symbol->section) |
| && ! relocateable) |
| { |
| *pgp = 0; |
| return bfd_reloc_undefined; |
| } |
| |
| *pgp = _bfd_get_gp_value (output_bfd); |
| if (*pgp == 0 |
| && (! relocateable |
| || (symbol->flags & BSF_SECTION_SYM) != 0)) |
| { |
| if (relocateable) |
| { |
| /* Make up a value. */ |
| *pgp = symbol->section->output_section->vma /*+ 0x4000*/; |
| _bfd_set_gp_value (output_bfd, *pgp); |
| } |
| else if (!mips_elf64_assign_gp (output_bfd, pgp)) |
| { |
| *error_message = |
| (char *) _("GP relative relocation when _gp not defined"); |
| return bfd_reloc_dangerous; |
| } |
| } |
| |
| return bfd_reloc_ok; |
| } |
| |
| /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must |
| become the offset from the gp register. */ |
| |
| static bfd_reloc_status_type |
| mips_elf64_gprel16_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_boolean relocateable; |
| bfd_reloc_status_type ret; |
| bfd_vma gp; |
| |
| /* If we're relocating, and this is an external symbol with no |
| addend, we don't want to change anything. We will only have an |
| addend if this is a newly created reloc, not read from an ELF |
| file. */ |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && (! reloc_entry->howto->partial_inplace |
| || reloc_entry->addend == 0)) |
| { |
| reloc_entry->address += input_section->output_offset; |
| return bfd_reloc_ok; |
| } |
| |
| if (output_bfd != (bfd *) NULL) |
| relocateable = TRUE; |
| else |
| { |
| relocateable = FALSE; |
| output_bfd = symbol->section->output_section->owner; |
| } |
| |
| ret = mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message, |
| &gp); |
| if (ret != bfd_reloc_ok) |
| return ret; |
| |
| return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, |
| input_section, relocateable, |
| data, gp); |
| } |
| |
| /* Do a R_MIPS_LITERAL relocation. */ |
| |
| static bfd_reloc_status_type |
| mips_elf64_literal_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_boolean relocateable; |
| bfd_reloc_status_type ret; |
| bfd_vma gp; |
| |
| /* If we're relocating, and this is an external symbol, we don't |
| want to change anything. */ |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && (! reloc_entry->howto->partial_inplace |
| || reloc_entry->addend == 0)) |
| { |
| reloc_entry->address += input_section->output_offset; |
| return bfd_reloc_ok; |
| } |
| |
| /* FIXME: The entries in the .lit8 and .lit4 sections should be merged. */ |
| if (output_bfd != (bfd *) NULL) |
| relocateable = TRUE; |
| else |
| { |
| relocateable = FALSE; |
| output_bfd = symbol->section->output_section->owner; |
| } |
| |
| ret = mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message, |
| &gp); |
| if (ret != bfd_reloc_ok) |
| return ret; |
| |
| return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, |
| input_section, relocateable, |
| data, gp); |
| } |
| |
| /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must |
| become the offset from the gp register. */ |
| |
| static bfd_reloc_status_type |
| mips_elf64_gprel32_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_boolean relocateable; |
| bfd_reloc_status_type ret; |
| bfd_vma gp; |
| bfd_vma relocation; |
| unsigned long val; |
| |
| /* If we're relocating, and this is an external symbol with no |
| addend, we don't want to change anything. We will only have an |
| addend if this is a newly created reloc, not read from an ELF |
| file. */ |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && reloc_entry->addend == 0) |
| { |
| *error_message = (char *) |
| _("32bits gp relative relocation occurs for an external symbol"); |
| return bfd_reloc_outofrange; |
| } |
| |
| if (output_bfd != (bfd *) NULL) |
| { |
| relocateable = TRUE; |
| gp = _bfd_get_gp_value (output_bfd); |
| } |
| else |
| { |
| relocateable = FALSE; |
| output_bfd = symbol->section->output_section->owner; |
| |
| ret = mips_elf64_final_gp (output_bfd, symbol, relocateable, |
| error_message, &gp); |
| if (ret != bfd_reloc_ok) |
| return ret; |
| } |
| |
| if (bfd_is_com_section (symbol->section)) |
| relocation = 0; |
| else |
| relocation = symbol->value; |
| |
| relocation += symbol->section->output_section->vma; |
| relocation += symbol->section->output_offset; |
| |
| if (reloc_entry->address > input_section->_cooked_size) |
| return bfd_reloc_outofrange; |
| |
| if (reloc_entry->howto->src_mask == 0) |
| { |
| /* This case arises with the 64-bit MIPS ELF ABI. */ |
| val = 0; |
| } |
| else |
| val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| |
| /* Set val to the offset into the section or symbol. */ |
| val += reloc_entry->addend; |
| |
| /* Adjust val for the final section location and GP value. If we |
| are producing relocateable output, we don't want to do this for |
| an external symbol. */ |
| if (! relocateable |
| || (symbol->flags & BSF_SECTION_SYM) != 0) |
| val += relocation - gp; |
| |
| bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); |
| |
| if (relocateable) |
| reloc_entry->address += input_section->output_offset; |
| |
| return bfd_reloc_ok; |
| } |
| |
| /* Do a R_MIPS_SHIFT6 relocation. The MSB of the shift is stored at bit 2, |
| the rest is at bits 6-10. The bitpos already got right by the howto. */ |
| |
| static bfd_reloc_status_type |
| mips_elf64_shift6_reloc (abfd, reloc_entry, symbol, data, input_section, |
| output_bfd, error_message) |
| bfd *abfd ATTRIBUTE_UNUSED; |
| arelent *reloc_entry; |
| asymbol *symbol; |
| PTR data ATTRIBUTE_UNUSED; |
| asection *input_section; |
| bfd *output_bfd; |
| char **error_message ATTRIBUTE_UNUSED; |
| { |
| /* If we're relocating, and this is an external symbol, we don't |
| want to change anything. */ |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && (! reloc_entry->howto->partial_inplace |
| || reloc_entry->addend == 0)) |
| { |
| reloc_entry->address += input_section->output_offset; |
| return bfd_reloc_ok; |
| } |
| |
| reloc_entry->addend = (reloc_entry->addend & 0x00007c0) |
| | (reloc_entry->addend & 0x00000800) >> 9; |
| |
| return bfd_reloc_continue; |
| } |
| |
| /* Handle a mips16 jump. */ |
| |
| static bfd_reloc_status_type |
| mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section, |
| output_bfd, error_message) |
| bfd *abfd ATTRIBUTE_UNUSED; |
| arelent *reloc_entry; |
| asymbol *symbol; |
| PTR data ATTRIBUTE_UNUSED; |
| asection *input_section; |
| bfd *output_bfd; |
| char **error_message ATTRIBUTE_UNUSED; |
| { |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && (! reloc_entry->howto->partial_inplace |
| || reloc_entry->addend == 0)) |
| { |
| reloc_entry->address += input_section->output_offset; |
| return bfd_reloc_ok; |
| } |
| |
| /* FIXME. */ |
| { |
| static bfd_boolean warned; |
| |
| if (! warned) |
| (*_bfd_error_handler) |
| (_("Linking mips16 objects into %s format is not supported"), |
| bfd_get_target (input_section->output_section->owner)); |
| warned = TRUE; |
| } |
| |
| return bfd_reloc_undefined; |
| } |
| |
| /* Handle a mips16 GP relative reloc. */ |
| |
| static bfd_reloc_status_type |
| mips16_gprel_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_boolean relocateable; |
| bfd_reloc_status_type ret; |
| bfd_vma gp; |
| unsigned short extend, insn; |
| unsigned long final; |
| |
| /* If we're relocating, and this is an external symbol with no |
| addend, we don't want to change anything. We will only have an |
| addend if this is a newly created reloc, not read from an ELF |
| file. */ |
| if (output_bfd != NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && reloc_entry->addend == 0) |
| { |
| reloc_entry->address += input_section->output_offset; |
| return bfd_reloc_ok; |
| } |
| |
| if (output_bfd != NULL) |
| relocateable = TRUE; |
| else |
| { |
| relocateable = FALSE; |
| output_bfd = symbol->section->output_section->owner; |
| } |
| |
| ret = mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message, |
| &gp); |
| if (ret != bfd_reloc_ok) |
| return ret; |
| |
| if (reloc_entry->address > input_section->_cooked_size) |
| return bfd_reloc_outofrange; |
| |
| /* Pick up the mips16 extend instruction and the real instruction. */ |
| extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address); |
| insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2); |
| |
| /* Stuff the current addend back as a 32 bit value, do the usual |
| relocation, and then clean up. */ |
| bfd_put_32 (abfd, |
| (bfd_vma) (((extend & 0x1f) << 11) |
| | (extend & 0x7e0) |
| | (insn & 0x1f)), |
| (bfd_byte *) data + reloc_entry->address); |
| |
| ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, |
| input_section, relocateable, data, gp); |
| |
| final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| bfd_put_16 (abfd, |
| (bfd_vma) ((extend & 0xf800) |
| | ((final >> 11) & 0x1f) |
| | (final & 0x7e0)), |
| (bfd_byte *) data + reloc_entry->address); |
| bfd_put_16 (abfd, |
| (bfd_vma) ((insn & 0xffe0) |
| | (final & 0x1f)), |
| (bfd_byte *) data + reloc_entry->address + 2); |
| |
| return ret; |
| } |
| |
| /* A mapping from BFD reloc types to MIPS ELF reloc types. */ |
| |
| struct elf_reloc_map { |
| bfd_reloc_code_real_type bfd_val; |
| enum elf_mips_reloc_type elf_val; |
| }; |
| |
| static const struct elf_reloc_map mips_reloc_map[] = |
| { |
| { BFD_RELOC_NONE, R_MIPS_NONE }, |
| { BFD_RELOC_16, R_MIPS_16 }, |
| { BFD_RELOC_32, R_MIPS_32 }, |
| /* There is no BFD reloc for R_MIPS_REL32. */ |
| { BFD_RELOC_64, R_MIPS_64 }, |
| { BFD_RELOC_CTOR, R_MIPS_64 }, |
| { BFD_RELOC_16_PCREL, R_MIPS_PC16 }, |
| { BFD_RELOC_HI16_S, R_MIPS_HI16 }, |
| { BFD_RELOC_LO16, R_MIPS_LO16 }, |
| { BFD_RELOC_GPREL16, R_MIPS_GPREL16 }, |
| { BFD_RELOC_GPREL32, R_MIPS_GPREL32 }, |
| { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, |
| { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, |
| { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, |
| { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, |
| { BFD_RELOC_MIPS_SHIFT5, R_MIPS_SHIFT5 }, |
| { BFD_RELOC_MIPS_SHIFT6, R_MIPS_SHIFT6 }, |
| { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP }, |
| { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE }, |
| { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST }, |
| { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, |
| { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, |
| { BFD_RELOC_MIPS_SUB, R_MIPS_SUB }, |
| { BFD_RELOC_MIPS_INSERT_A, R_MIPS_INSERT_A }, |
| { BFD_RELOC_MIPS_INSERT_B, R_MIPS_INSERT_B }, |
| { BFD_RELOC_MIPS_DELETE, R_MIPS_DELETE }, |
| { BFD_RELOC_MIPS_HIGHEST, R_MIPS_HIGHEST }, |
| { BFD_RELOC_MIPS_HIGHER, R_MIPS_HIGHER }, |
| { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, |
| { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }, |
| { BFD_RELOC_MIPS_SCN_DISP, R_MIPS_SCN_DISP }, |
| { BFD_RELOC_MIPS_REL16, R_MIPS_REL16 }, |
| /* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */ |
| { BFD_RELOC_MIPS_RELGOT, R_MIPS_RELGOT }, |
| { BFD_RELOC_MIPS_JALR, R_MIPS_JALR } |
| }; |
| |
| /* Given a BFD reloc type, return a howto structure. */ |
| |
| static reloc_howto_type * |
| bfd_elf64_bfd_reloc_type_lookup (abfd, code) |
| bfd *abfd ATTRIBUTE_UNUSED; |
| bfd_reloc_code_real_type code; |
| { |
| unsigned int i; |
| /* FIXME: We default to RELA here instead of choosing the right |
| relocation variant. */ |
| reloc_howto_type *howto_table = mips_elf64_howto_table_rela; |
| |
| for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); |
| i++) |
| { |
| if (mips_reloc_map[i].bfd_val == code) |
| return &howto_table[(int) mips_reloc_map[i].elf_val]; |
| } |
| |
| switch (code) |
| { |
| case BFD_RELOC_MIPS16_JMP: |
| return &elf_mips16_jump_howto; |
| case BFD_RELOC_MIPS16_GPREL: |
| return &elf_mips16_gprel_howto; |
| case BFD_RELOC_VTABLE_INHERIT: |
| return &elf_mips_gnu_vtinherit_howto; |
| case BFD_RELOC_VTABLE_ENTRY: |
| return &elf_mips_gnu_vtentry_howto; |
| default: |
| bfd_set_error (bfd_error_bad_value); |
| return NULL; |
| } |
| } |
| |
| /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */ |
| |
| static reloc_howto_type * |
| mips_elf64_rtype_to_howto (r_type, rela_p) |
| unsigned int r_type; |
| bfd_boolean rela_p; |
| { |
| switch (r_type) |
| { |
| case R_MIPS16_26: |
| return &elf_mips16_jump_howto; |
| case R_MIPS16_GPREL: |
| return &elf_mips16_gprel_howto; |
| case R_MIPS_GNU_VTINHERIT: |
| return &elf_mips_gnu_vtinherit_howto; |
| case R_MIPS_GNU_VTENTRY: |
| return &elf_mips_gnu_vtentry_howto; |
| default: |
| BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); |
| if (rela_p) |
| return &mips_elf64_howto_table_rela[r_type]; |
| else |
| return &mips_elf64_howto_table_rel[r_type]; |
| break; |
| } |
| } |
| |
| /* Prevent relocation handling by bfd for MIPS ELF64. */ |
| |
| static void |
| mips_elf64_info_to_howto_rel (abfd, cache_ptr, dst) |
| bfd *abfd ATTRIBUTE_UNUSED; |
| arelent *cache_ptr ATTRIBUTE_UNUSED; |
| Elf_Internal_Rela *dst ATTRIBUTE_UNUSED; |
| { |
| BFD_ASSERT (0); |
| } |
| |
| static void |
| mips_elf64_info_to_howto_rela (abfd, cache_ptr, dst) |
| bfd *abfd ATTRIBUTE_UNUSED; |
| arelent *cache_ptr ATTRIBUTE_UNUSED; |
| Elf_Internal_Rela *dst ATTRIBUTE_UNUSED; |
| { |
| BFD_ASSERT (0); |
| } |
| |
| /* Since each entry in an SHT_REL or SHT_RELA section can represent up |
| to three relocs, we must tell the user to allocate more space. */ |
| |
| static long |
| mips_elf64_get_reloc_upper_bound (abfd, sec) |
| bfd *abfd ATTRIBUTE_UNUSED; |
| asection *sec; |
| { |
| return (sec->reloc_count * 3 + 1) * sizeof (arelent *); |
| } |
| |
| static long |
| mips_elf64_get_dynamic_reloc_upper_bound (abfd) |
| bfd *abfd; |
| { |
| return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 3; |
| } |
| |
| /* We must also copy more relocations than the corresponding functions |
| in elf.c would, so the two following functions are slightly |
| modified from elf.c, that multiply the external relocation count by |
| 3 to obtain the internal relocation count. */ |
| |
| static long |
| mips_elf64_canonicalize_reloc (abfd, section, relptr, symbols) |
| bfd *abfd; |
| sec_ptr section; |
| arelent **relptr; |
| asymbol **symbols; |
| { |
| arelent *tblptr; |
| unsigned int i; |
| struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| |
| if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE)) |
| return -1; |
| |
| tblptr = section->relocation; |
| for (i = 0; i < section->reloc_count * 3; i++) |
| *relptr++ = tblptr++; |
| |
| *relptr = NULL; |
| |
| return section->reloc_count * 3; |
| } |
| |
| static long |
| mips_elf64_canonicalize_dynamic_reloc (abfd, storage, syms) |
| bfd *abfd; |
| arelent **storage; |
| asymbol **syms; |
| { |
| bfd_boolean (*slurp_relocs) |
| PARAMS ((bfd *, asection *, asymbol **, bfd_boolean)); |
| asection *s; |
| long ret; |
| |
| if (elf_dynsymtab (abfd) == 0) |
| { |
| bfd_set_error (bfd_error_invalid_operation); |
| return -1; |
| } |
| |
| slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
| ret = 0; |
| for (s = abfd->sections; s != NULL; s = s->next) |
| { |
| if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd) |
| && (elf_section_data (s)->this_hdr.sh_type == SHT_REL |
| || elf_section_data (s)->this_hdr.sh_type == SHT_RELA)) |
| { |
| arelent *p; |
| long count, i; |
| |
| if (! (*slurp_relocs) (abfd, s, syms, TRUE)) |
| return -1; |
| count = s->_raw_size / elf_section_data (s)->this_hdr.sh_entsize * 3; |
| p = s->relocation; |
| for (i = 0; i < count; i++) |
| *storage++ = p++; |
| ret += count; |
| } |
| } |
| |
| *storage = NULL; |
| |
| return ret; |
| } |
| |
| /* Read the relocations from one reloc section. This is mostly copied |
| from elfcode.h, except for the changes to expand one external |
| relocation to 3 internal ones. We must unfortunately set |
| reloc_count to the number of external relocations, because a lot of |
| generic code seems to depend on this. */ |
| |
| static bfd_boolean |
| mips_elf64_slurp_one_reloc_table (abfd, asect, rel_hdr, reloc_count, |
| relents, symbols, dynamic) |
| bfd *abfd; |
| asection *asect; |
| Elf_Internal_Shdr *rel_hdr; |
| bfd_size_type reloc_count; |
| arelent *relents; |
| asymbol **symbols; |
| bfd_boolean dynamic; |
| { |
| PTR allocated = NULL; |
| bfd_byte *native_relocs; |
| arelent *relent; |
| bfd_vma i; |
| int entsize; |
| reloc_howto_type *howto_table; |
| |
| allocated = (PTR) bfd_malloc (rel_hdr->sh_size); |
| if (allocated == NULL) |
| return FALSE; |
| |
| if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 |
| || (bfd_bread (allocated, rel_hdr->sh_size, abfd) |
| != rel_hdr->sh_size)) |
| goto error_return; |
| |
| native_relocs = (bfd_byte *) allocated; |
| |
| entsize = rel_hdr->sh_entsize; |
| BFD_ASSERT (entsize == sizeof (Elf64_Mips_External_Rel) |
| || entsize == sizeof (Elf64_Mips_External_Rela)); |
| |
| if (entsize == sizeof (Elf64_Mips_External_Rel)) |
| howto_table = mips_elf64_howto_table_rel; |
| else |
| howto_table = mips_elf64_howto_table_rela; |
| |
| for (i = 0, relent = relents; |
| i < reloc_count; |
| i++, native_relocs += entsize) |
| { |
| Elf64_Mips_Internal_Rela rela; |
| bfd_boolean used_sym, used_ssym; |
| int ir; |
| |
| if (entsize == sizeof (Elf64_Mips_External_Rela)) |
| mips_elf64_swap_reloca_in (abfd, |
| (Elf64_Mips_External_Rela *) native_relocs, |
| &rela); |
| else |
| mips_elf64_swap_reloc_in (abfd, |
| (Elf64_Mips_External_Rel *) native_relocs, |
| &rela); |
| |
| /* Each entry represents exactly three actual relocations. */ |
| |
| used_sym = FALSE; |
| used_ssym = FALSE; |
| for (ir = 0; ir < 3; ir++) |
| { |
| enum elf_mips_reloc_type type; |
| |
| switch (ir) |
| { |
| default: |
| abort (); |
| case 0: |
| type = (enum elf_mips_reloc_type) rela.r_type; |
| break; |
| case 1: |
| type = (enum elf_mips_reloc_type) rela.r_type2; |
| break; |
| case 2: |
| type = (enum elf_mips_reloc_type) rela.r_type3; |
| break; |
| } |
| |
| /* Some types require symbols, whereas some do not. */ |
| switch (type) |
| { |
| case R_MIPS_NONE: |
| case R_MIPS_LITERAL: |
| case R_MIPS_INSERT_A: |
| case R_MIPS_INSERT_B: |
| case R_MIPS_DELETE: |
| relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| break; |
| |
| default: |
| if (! used_sym) |
| { |
| if (rela.r_sym == 0) |
| relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| else |
| { |
| asymbol **ps, *s; |
| |
| ps = symbols + rela.r_sym - 1; |
| s = *ps; |
| if ((s->flags & BSF_SECTION_SYM) == 0) |
| relent->sym_ptr_ptr = ps; |
| else |
| relent->sym_ptr_ptr = s->section->symbol_ptr_ptr; |
| } |
| |
| used_sym = TRUE; |
| } |
| else if (! used_ssym) |
| { |
| switch (rela.r_ssym) |
| { |
| case RSS_UNDEF: |
| relent->sym_ptr_ptr = |
| bfd_abs_section_ptr->symbol_ptr_ptr; |
| break; |
| |
| case RSS_GP: |
| case RSS_GP0: |
| case RSS_LOC: |
| /* FIXME: I think these need to be handled using |
| special howto structures. */ |
| BFD_ASSERT (0); |
| break; |
| |
| default: |
| BFD_ASSERT (0); |
| break; |
| } |
| |
| used_ssym = TRUE; |
| } |
| else |
| relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| |
| break; |
| } |
| |
| /* The address of an ELF reloc is section relative for an |
| object file, and absolute for an executable file or |
| shared library. The address of a BFD reloc is always |
| section relative. */ |
| if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic) |
| relent->address = rela.r_offset; |
| else |
| relent->address = rela.r_offset - asect->vma; |
| |
| relent->addend = rela.r_addend; |
| |
| relent->howto = &howto_table[(int) type]; |
| |
| ++relent; |
| } |
| } |
| |
| asect->reloc_count += (relent - relents) / 3; |
| |
| if (allocated != NULL) |
| free (allocated); |
| |
| return TRUE; |
| |
| error_return: |
| if (allocated != NULL) |
| free (allocated); |
| return FALSE; |
| } |
| |
| /* Read the relocations. On Irix 6, there can be two reloc sections |
| associated with a single data section. This is copied from |
| elfcode.h as well, with changes as small as accounting for 3 |
| internal relocs per external reloc and resetting reloc_count to |
| zero before processing the relocs of a section. */ |
| |
| static bfd_boolean |
| mips_elf64_slurp_reloc_table (abfd, asect, symbols, dynamic) |
| bfd *abfd; |
| asection *asect; |
| asymbol **symbols; |
| bfd_boolean dynamic; |
| { |
| struct bfd_elf_section_data * const d = elf_section_data (asect); |
| Elf_Internal_Shdr *rel_hdr; |
| Elf_Internal_Shdr *rel_hdr2; |
| bfd_size_type reloc_count; |
| bfd_size_type reloc_count2; |
| arelent *relents; |
| bfd_size_type amt; |
| |
| if (asect->relocation != NULL) |
| return TRUE; |
| |
| if (! dynamic) |
| { |
| if ((asect->flags & SEC_RELOC) == 0 |
| || asect->reloc_count == 0) |
| return TRUE; |
| |
| rel_hdr = &d->rel_hdr; |
| reloc_count = NUM_SHDR_ENTRIES (rel_hdr); |
| rel_hdr2 = d->rel_hdr2; |
| reloc_count2 = (rel_hdr2 ? NUM_SHDR_ENTRIES (rel_hdr2) : 0); |
| |
| BFD_ASSERT (asect->reloc_count == reloc_count + reloc_count2); |
| BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset |
| || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset)); |
| |
| } |
| else |
| { |
| /* Note that ASECT->RELOC_COUNT tends not to be accurate in this |
| case because relocations against this section may use the |
| dynamic symbol table, and in that case bfd_section_from_shdr |
| in elf.c does not update the RELOC_COUNT. */ |
| if (asect->_raw_size == 0) |
| return TRUE; |
| |
| rel_hdr = &d->this_hdr; |
| reloc_count = NUM_SHDR_ENTRIES (rel_hdr); |
| rel_hdr2 = NULL; |
| reloc_count2 = 0; |
| } |
| |
| /* Allocate space for 3 arelent structures for each Rel structure. */ |
| amt = (reloc_count + reloc_count2) * 3 * sizeof (arelent); |
| relents = (arelent *) bfd_alloc (abfd, amt); |
| if (relents == NULL) |
| return FALSE; |
| |
| /* The slurp_one_reloc_table routine increments reloc_count. */ |
| asect->reloc_count = 0; |
| |
| if (! mips_elf64_slurp_one_reloc_table (abfd, asect, |
| rel_hdr, reloc_count, |
| relents, |
| symbols, dynamic)) |
| return FALSE; |
| if (d->rel_hdr2 != NULL) |
| { |
| if (! mips_elf64_slurp_one_reloc_table (abfd, asect, |
| rel_hdr2, reloc_count2, |
| relents + reloc_count * 3, |
| symbols, dynamic)) |
| return FALSE; |
| } |
| |
| asect->relocation = relents; |
| return TRUE; |
| } |
| |
| /* Write out the relocations. */ |
| |
| static void |
| mips_elf64_write_relocs (abfd, sec, data) |
| bfd *abfd; |
| asection *sec; |
| PTR data; |
| { |
| bfd_boolean *failedp = (bfd_boolean *) data; |
| int count; |
| Elf_Internal_Shdr *rel_hdr; |
| unsigned int idx; |
| |
| /* If we have already failed, don't do anything. */ |
| if (*failedp) |
| return; |
| |
| if ((sec->flags & SEC_RELOC) == 0) |
| return; |
| |
| /* The linker backend writes the relocs out itself, and sets the |
| reloc_count field to zero to inhibit writing them here. Also, |
| sometimes the SEC_RELOC flag gets set even when there aren't any |
| relocs. */ |
| if (sec->reloc_count == 0) |
| return; |
| |
| /* We can combine up to three relocs that refer to the same address |
| if the latter relocs have no associated symbol. */ |
| count = 0; |
| for (idx = 0; idx < sec->reloc_count; idx++) |
| { |
| bfd_vma addr; |
| unsigned int i; |
| |
| ++count; |
| |
| addr = sec->orelocation[idx]->address; |
| for (i = 0; i < 2; i++) |
| { |
| arelent *r; |
| |
| if (idx + 1 >= sec->reloc_count) |
| break; |
| r = sec->orelocation[idx + 1]; |
| if (r->address != addr |
| || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section) |
| || (*r->sym_ptr_ptr)->value != 0) |
| break; |
| |
| /* We can merge the reloc at IDX + 1 with the reloc at IDX. */ |
| |
| ++idx; |
| } |
| } |
| |
| rel_hdr = &elf_section_data (sec)->rel_hdr; |
| |
| /* Do the actual relocation. */ |
| |
| if (rel_hdr->sh_entsize == sizeof(Elf64_Mips_External_Rel)) |
| mips_elf64_write_rel (abfd, sec, rel_hdr, &count, data); |
| else if (rel_hdr->sh_entsize == sizeof(Elf64_Mips_External_Rela)) |
| mips_elf64_write_rela (abfd, sec, rel_hdr, &count, data); |
| else |
| BFD_ASSERT (0); |
| } |
| |
| static void |
| mips_elf64_write_rel (abfd, sec, rel_hdr, count, data) |
| bfd *abfd; |
| asection *sec; |
| Elf_Internal_Shdr *rel_hdr; |
| int *count; |
| PTR data; |
| { |
| bfd_boolean *failedp = (bfd_boolean *) data; |
| Elf64_Mips_External_Rel *ext_rel; |
| unsigned int idx; |
| asymbol *last_sym = 0; |
| int last_sym_idx = 0; |
| |
| rel_hdr->sh_size = (bfd_vma)(rel_hdr->sh_entsize * *count); |
| rel_hdr->contents = (PTR) bfd_alloc (abfd, rel_hdr->sh_size); |
| if (rel_hdr->contents == NULL) |
| { |
| *failedp = TRUE; |
| return; |
| } |
| |
| ext_rel = (Elf64_Mips_External_Rel *) rel_hdr->contents; |
| for (idx = 0; idx < sec->reloc_count; idx++, ext_rel++) |
| { |
| arelent *ptr; |
| Elf64_Mips_Internal_Rela int_rel; |
| asymbol *sym; |
| int n; |
| unsigned int i; |
| |
| ptr = sec->orelocation[idx]; |
| |
| /* The address of an ELF reloc is section relative for an object |
| file, and absolute for an executable file or shared library. |
| The address of a BFD reloc is always section relative. */ |
| if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) |
| int_rel.r_offset = ptr->address; |
| else |
| int_rel.r_offset = ptr->address + sec->vma; |
| |
| sym = *ptr->sym_ptr_ptr; |
| if (sym == last_sym) |
| n = last_sym_idx; |
| else |
| { |
| last_sym = sym; |
| n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); |
| if (n < 0) |
| { |
| *failedp = TRUE; |
| return; |
| } |
| last_sym_idx = n; |
| } |
| |
| int_rel.r_sym = n; |
| int_rel.r_ssym = RSS_UNDEF; |
| |
| if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec |
| && ! _bfd_elf_validate_reloc (abfd, ptr)) |
| { |
| *failedp = TRUE; |
| return; |
| } |
| |
| int_rel.r_type = ptr->howto->type; |
| int_rel.r_type2 = (int) R_MIPS_NONE; |
| int_rel.r_type3 = (int) R_MIPS_NONE; |
| |
| for (i = 0; i < 2; i++) |
| { |
| arelent *r; |
| |
| if (idx + 1 >= sec->reloc_count) |
| break; |
| r = sec->orelocation[idx + 1]; |
| if (r->address != ptr->address |
| || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section) |
| || (*r->sym_ptr_ptr)->value != 0) |
| break; |
| |
| /* We can merge the reloc at IDX + 1 with the reloc at IDX. */ |
| |
| if (i == 0) |
| int_rel.r_type2 = r->howto->type; |
| else |
| int_rel.r_type3 = r->howto->type; |
| |
| ++idx; |
| } |
| |
| mips_elf64_swap_reloc_out (abfd, &int_rel, ext_rel); |
| } |
| |
| BFD_ASSERT (ext_rel - (Elf64_Mips_External_Rel *) rel_hdr->contents |
| == *count); |
| } |
| |
| static void |
| mips_elf64_write_rela (abfd, sec, rela_hdr, count, data) |
| bfd *abfd; |
| asection *sec; |
| Elf_Internal_Shdr *rela_hdr; |
| int *count; |
| PTR data; |
| { |
| bfd_boolean *failedp = (bfd_boolean *) data; |
| Elf64_Mips_External_Rela *ext_rela; |
| unsigned int idx; |
| asymbol *last_sym = 0; |
| int last_sym_idx = 0; |
| |
| rela_hdr->sh_size = (bfd_vma)(rela_hdr->sh_entsize * *count); |
| rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size); |
| if (rela_hdr->contents == NULL) |
| { |
| *failedp = TRUE; |
| return; |
| } |
| |
| ext_rela = (Elf64_Mips_External_Rela *) rela_hdr->contents; |
| for (idx = 0; idx < sec->reloc_count; idx++, ext_rela++) |
| { |
| arelent *ptr; |
| Elf64_Mips_Internal_Rela int_rela; |
| asymbol *sym; |
| int n; |
| unsigned int i; |
| |
| ptr = sec->orelocation[idx]; |
| |
| /* The address of an ELF reloc is section relative for an object |
| file, and absolute for an executable file or shared library. |
| The address of a BFD reloc is always section relative. */ |
| if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) |
| int_rela.r_offset = ptr->address; |
| else |
| int_rela.r_offset = ptr->address + sec->vma; |
| |
| sym = *ptr->sym_ptr_ptr; |
| if (sym == last_sym) |
| n = last_sym_idx; |
| else |
| { |
| last_sym = sym; |
| n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); |
| if (n < 0) |
| { |
| *failedp = TRUE; |
| return; |
| } |
| last_sym_idx = n; |
| } |
| |
| int_rela.r_sym = n; |
| int_rela.r_addend = ptr->addend; |
| int_rela.r_ssym = RSS_UNDEF; |
| |
| if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec |
| && ! _bfd_elf_validate_reloc (abfd, ptr)) |
| { |
| *failedp = TRUE; |
| return; |
| } |
| |
| int_rela.r_type = ptr->howto->type; |
| int_rela.r_type2 = (int) R_MIPS_NONE; |
| int_rela.r_type3 = (int) R_MIPS_NONE; |
| |
| for (i = 0; i < 2; i++) |
| { |
| arelent *r; |
| |
| if (idx + 1 >= sec->reloc_count) |
| break; |
| r = sec->orelocation[idx + 1]; |
| if (r->address != ptr->address |
| || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section) |
| || (*r->sym_ptr_ptr)->value != 0) |
| break; |
| |
| /* We can merge the reloc at IDX + 1 with the reloc at IDX. */ |
| |
| if (i == 0) |
| int_rela.r_type2 = r->howto->type; |
| else |
| int_rela.r_type3 = r->howto->type; |
| |
| ++idx; |
| } |
| |
| mips_elf64_swap_reloca_out (abfd, &int_rela, ext_rela); |
| } |
| |
| BFD_ASSERT (ext_rela - (Elf64_Mips_External_Rela *) rela_hdr->contents |
| == *count); |
| } |
| |
| /* Set the right machine number for a MIPS ELF file. */ |
| |
| static bfd_boolean |
| mips_elf64_object_p (abfd) |
| bfd *abfd; |
| { |
| unsigned long mach; |
| |
| /* Irix 6 is broken. Object file symbol tables are not always |
| sorted correctly such that local symbols precede global symbols, |
| and the sh_info field in the symbol table is not always right. */ |
| if (elf64_mips_irix_compat (abfd) != ict_none) |
| elf_bad_symtab (abfd) = TRUE; |
| |
| mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags); |
| bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach); |
| return TRUE; |
| } |
| |
| /* Depending on the target vector we generate some version of Irix |
| executables or "normal" MIPS ELF ABI executables. */ |
| static irix_compat_t |
| elf64_mips_irix_compat (abfd) |
| bfd *abfd; |
| { |
| if ((abfd->xvec == &bfd_elf64_bigmips_vec) |
| || (abfd->xvec == &bfd_elf64_littlemips_vec)) |
| return ict_irix6; |
| else |
| return ict_none; |
| } |
| |
| /* Support for core dump NOTE sections. */ |
| static bfd_boolean |
| elf64_mips_grok_prstatus (abfd, note) |
| bfd *abfd; |
| Elf_Internal_Note *note; |
| { |
| int offset; |
| unsigned int raw_size; |
| |
| switch (note->descsz) |
| { |
| default: |
| return FALSE; |
| |
| case 480: /* Linux/MIPS - N64 kernel */ |
| /* pr_cursig */ |
| elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); |
| |
| /* pr_pid */ |
| elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); |
| |
| /* pr_reg */ |
| offset = 112; |
| raw_size = 360; |
| |
| break; |
| } |
| |
| /* Make a ".reg/999" section. */ |
| return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
| raw_size, note->descpos + offset); |
| } |
| |
| static bfd_boolean |
| elf64_mips_grok_psinfo (abfd, note) |
| bfd *abfd; |
| Elf_Internal_Note *note; |
| { |
| switch (note->descsz) |
| { |
| default: |
| return FALSE; |
| |
| case 136: /* Linux/MIPS - N64 kernel elf_prpsinfo */ |
| elf_tdata (abfd)->core_program |
| = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
| elf_tdata (abfd)->core_command |
| = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
| } |
| |
| /* Note that for some reason, a spurious space is tacked |
| onto the end of the args in some (at least one anyway) |
| implementations, so strip it off if it exists. */ |
| |
| { |
| char *command = elf_tdata (abfd)->core_command; |
| int n = strlen (command); |
| |
| if (0 < n && command[n - 1] == ' ') |
| command[n - 1] = '\0'; |
| } |
| |
| return TRUE; |
| } |
| |
| /* ECOFF swapping routines. These are used when dealing with the |
| .mdebug section, which is in the ECOFF debugging format. */ |
| static const struct ecoff_debug_swap mips_elf64_ecoff_debug_swap = |
| { |
| /* Symbol table magic number. */ |
| magicSym2, |
| /* Alignment of debugging information. E.g., 4. */ |
| 8, |
| /* Sizes of external symbolic information. */ |
| sizeof (struct hdr_ext), |
| sizeof (struct dnr_ext), |
| sizeof (struct pdr_ext), |
| sizeof (struct sym_ext), |
| sizeof (struct opt_ext), |
| sizeof (struct fdr_ext), |
| sizeof (struct rfd_ext), |
| sizeof (struct ext_ext), |
| /* Functions to swap in external symbolic data. */ |
| ecoff_swap_hdr_in, |
| ecoff_swap_dnr_in, |
| ecoff_swap_pdr_in, |
| ecoff_swap_sym_in, |
| ecoff_swap_opt_in, |
| ecoff_swap_fdr_in, |
| ecoff_swap_rfd_in, |
| ecoff_swap_ext_in, |
| _bfd_ecoff_swap_tir_in, |
| _bfd_ecoff_swap_rndx_in, |
| /* Functions to swap out external symbolic data. */ |
| ecoff_swap_hdr_out, |
| ecoff_swap_dnr_out, |
| ecoff_swap_pdr_out, |
| ecoff_swap_sym_out, |
| ecoff_swap_opt_out, |
| ecoff_swap_fdr_out, |
| ecoff_swap_rfd_out, |
| ecoff_swap_ext_out, |
| _bfd_ecoff_swap_tir_out, |
| _bfd_ecoff_swap_rndx_out, |
| /* Function to read in symbolic data. */ |
| _bfd_mips_elf_read_ecoff_info |
| }; |
| |
| /* Relocations in the 64 bit MIPS ELF ABI are more complex than in |
| standard ELF. This structure is used to redirect the relocation |
| handling routines. */ |
| |
| const struct elf_size_info mips_elf64_size_info = |
| { |
| sizeof (Elf64_External_Ehdr), |
| sizeof (Elf64_External_Phdr), |
| sizeof (Elf64_External_Shdr), |
| sizeof (Elf64_Mips_External_Rel), |
| sizeof (Elf64_Mips_External_Rela), |
| sizeof (Elf64_External_Sym), |
| sizeof (Elf64_External_Dyn), |
| sizeof (Elf_External_Note), |
| 4, /* hash-table entry size */ |
| 3, /* internal relocations per external relocations */ |
| 64, /* arch_size */ |
| 8, /* file_align */ |
| ELFCLASS64, |
| EV_CURRENT, |
| bfd_elf64_write_out_phdrs, |
| bfd_elf64_write_shdrs_and_ehdr, |
| mips_elf64_write_relocs, |
| bfd_elf64_swap_symbol_in, |
| bfd_elf64_swap_symbol_out, |
| mips_elf64_slurp_reloc_table, |
| bfd_elf64_slurp_symbol_table, |
| bfd_elf64_swap_dyn_in, |
| bfd_elf64_swap_dyn_out, |
| mips_elf64_be_swap_reloc_in, |
| mips_elf64_be_swap_reloc_out, |
| mips_elf64_be_swap_reloca_in, |
| mips_elf64_be_swap_reloca_out |
| }; |
| |
| #define ELF_ARCH bfd_arch_mips |
| #define ELF_MACHINE_CODE EM_MIPS |
| |
| /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses |
| a value of 0x1000, and we are compatible. |
| FIXME: How does this affect NewABI? */ |
| #define ELF_MAXPAGESIZE 0x1000 |
| |
| #define elf_backend_collect TRUE |
| #define elf_backend_type_change_ok TRUE |
| #define elf_backend_can_gc_sections TRUE |
| #define elf_info_to_howto mips_elf64_info_to_howto_rela |
| #define elf_info_to_howto_rel mips_elf64_info_to_howto_rel |
| #define elf_backend_object_p mips_elf64_object_p |
| #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing |
| #define elf_backend_section_processing _bfd_mips_elf_section_processing |
| #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr |
| #define elf_backend_fake_sections _bfd_mips_elf_fake_sections |
| #define elf_backend_section_from_bfd_section \ |
| _bfd_mips_elf_section_from_bfd_section |
| #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook |
| #define elf_backend_link_output_symbol_hook \ |
| _bfd_mips_elf_link_output_symbol_hook |
| #define elf_backend_create_dynamic_sections \ |
| _bfd_mips_elf_create_dynamic_sections |
| #define elf_backend_check_relocs _bfd_mips_elf_check_relocs |
| #define elf_backend_adjust_dynamic_symbol \ |
| _bfd_mips_elf_adjust_dynamic_symbol |
| #define elf_backend_always_size_sections \ |
| _bfd_mips_elf_always_size_sections |
| #define elf_backend_size_dynamic_sections \ |
| _bfd_mips_elf_size_dynamic_sections |
| #define elf_backend_relocate_section _bfd_mips_elf_relocate_section |
| #define elf_backend_finish_dynamic_symbol \ |
| _bfd_mips_elf_finish_dynamic_symbol |
| #define elf_backend_finish_dynamic_sections \ |
| _bfd_mips_elf_finish_dynamic_sections |
| #define elf_backend_final_write_processing \ |
| _bfd_mips_elf_final_write_processing |
| #define elf_backend_additional_program_headers \ |
| _bfd_mips_elf_additional_program_headers |
| #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map |
| #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook |
| #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook |
| #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol |
| #define elf_backend_ignore_discarded_relocs \ |
| _bfd_mips_elf_ignore_discarded_relocs |
| #define elf_backend_mips_irix_compat elf64_mips_irix_compat |
| #define elf_backend_mips_rtype_to_howto mips_elf64_rtype_to_howto |
| #define elf_backend_ecoff_debug_swap &mips_elf64_ecoff_debug_swap |
| #define elf_backend_size_info mips_elf64_size_info |
| |
| #define elf_backend_grok_prstatus elf64_mips_grok_prstatus |
| #define elf_backend_grok_psinfo elf64_mips_grok_psinfo |
| |
| #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO) |
| #define elf_backend_plt_header_size 0 |
| |
| /* MIPS ELF64 can use a mixture of REL and RELA, but some Relocations |
| work better/work only in RELA, so we default to this. */ |
| #define elf_backend_may_use_rel_p 1 |
| #define elf_backend_may_use_rela_p 1 |
| #define elf_backend_default_use_rela_p 1 |
| |
| #define elf_backend_write_section _bfd_mips_elf_write_section |
| |
| /* We don't set bfd_elf64_bfd_is_local_label_name because the 32-bit |
| MIPS-specific function only applies to IRIX5, which had no 64-bit |
| ABI. */ |
| #define bfd_elf64_find_nearest_line _bfd_mips_elf_find_nearest_line |
| #define bfd_elf64_new_section_hook _bfd_mips_elf_new_section_hook |
| #define bfd_elf64_set_section_contents _bfd_mips_elf_set_section_contents |
| #define bfd_elf64_bfd_get_relocated_section_contents \ |
| _bfd_elf_mips_get_relocated_section_contents |
| #define bfd_elf64_bfd_link_hash_table_create \ |
| _bfd_mips_elf_link_hash_table_create |
| #define bfd_elf64_bfd_final_link _bfd_mips_elf_final_link |
| #define bfd_elf64_bfd_merge_private_bfd_data \ |
| _bfd_mips_elf_merge_private_bfd_data |
| #define bfd_elf64_bfd_set_private_flags _bfd_mips_elf_set_private_flags |
| #define bfd_elf64_bfd_print_private_bfd_data \ |
| _bfd_mips_elf_print_private_bfd_data |
| |
| #define bfd_elf64_get_reloc_upper_bound mips_elf64_get_reloc_upper_bound |
| #define bfd_elf64_canonicalize_reloc mips_elf64_canonicalize_reloc |
| #define bfd_elf64_get_dynamic_reloc_upper_bound mips_elf64_get_dynamic_reloc_upper_bound |
| #define bfd_elf64_canonicalize_dynamic_reloc mips_elf64_canonicalize_dynamic_reloc |
| |
| /* MIPS ELF64 archive functions. */ |
| #define bfd_elf64_archive_functions |
| extern bfd_boolean bfd_elf64_archive_slurp_armap |
| PARAMS ((bfd *)); |
| extern bfd_boolean bfd_elf64_archive_write_armap |
| PARAMS ((bfd *, unsigned int, struct orl *, unsigned int, int)); |
| #define bfd_elf64_archive_slurp_extended_name_table \ |
| _bfd_archive_coff_slurp_extended_name_table |
| #define bfd_elf64_archive_construct_extended_name_table \ |
| _bfd_archive_coff_construct_extended_name_table |
| #define bfd_elf64_archive_truncate_arname \ |
| _bfd_archive_coff_truncate_arname |
| #define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr |
| #define bfd_elf64_archive_openr_next_archived_file \ |
| _bfd_archive_coff_openr_next_archived_file |
| #define bfd_elf64_archive_get_elt_at_index \ |
| _bfd_archive_coff_get_elt_at_index |
| #define bfd_elf64_archive_generic_stat_arch_elt \ |
| _bfd_archive_coff_generic_stat_arch_elt |
| #define bfd_elf64_archive_update_armap_timestamp \ |
| _bfd_archive_coff_update_armap_timestamp |
| |
| /* The SGI style (n)64 NewABI. */ |
| #define TARGET_LITTLE_SYM bfd_elf64_littlemips_vec |
| #define TARGET_LITTLE_NAME "elf64-littlemips" |
| #define TARGET_BIG_SYM bfd_elf64_bigmips_vec |
| #define TARGET_BIG_NAME "elf64-bigmips" |
| |
| #include "elf64-target.h" |
| |
| #define INCLUDED_TARGET_FILE /* More a type of flag. */ |
| |
| /* The SYSV-style 'traditional' (n)64 NewABI. */ |
| #undef TARGET_LITTLE_SYM |
| #undef TARGET_LITTLE_NAME |
| #undef TARGET_BIG_SYM |
| #undef TARGET_BIG_NAME |
| |
| #define TARGET_LITTLE_SYM bfd_elf64_tradlittlemips_vec |
| #define TARGET_LITTLE_NAME "elf64-tradlittlemips" |
| #define TARGET_BIG_SYM bfd_elf64_tradbigmips_vec |
| #define TARGET_BIG_NAME "elf64-tradbigmips" |
| |
| /* Include the target file again for this target. */ |
| #include "elf64-target.h" |