| /* 32-bit ELF support for ARM new abi option. |
| Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc. |
| |
| 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. */ |
| |
| #include "elf/arm.h" |
| #include "bfd.h" |
| #include "sysdep.h" |
| #include "libbfd.h" |
| #include "elf-bfd.h" |
| |
| #ifndef NUM_ELEM |
| #define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0])) |
| #endif |
| |
| #define USE_REL 1 |
| |
| #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec |
| #define TARGET_LITTLE_NAME "elf32-littlearm" |
| #define TARGET_BIG_SYM bfd_elf32_bigarm_vec |
| #define TARGET_BIG_NAME "elf32-bigarm" |
| |
| #define elf_info_to_howto 0 |
| #define elf_info_to_howto_rel elf32_arm_info_to_howto |
| |
| #define ARM_ELF_ABI_VERSION 0 |
| #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM |
| |
| static reloc_howto_type * elf32_arm_reloc_type_lookup |
| PARAMS ((bfd * abfd, bfd_reloc_code_real_type code)); |
| static bfd_boolean elf32_arm_nabi_grok_prstatus |
| PARAMS ((bfd *abfd, Elf_Internal_Note *note)); |
| static bfd_boolean elf32_arm_nabi_grok_psinfo |
| PARAMS ((bfd *abfd, Elf_Internal_Note *note)); |
| |
| /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g. |
| R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO |
| in that slot. */ |
| |
| static reloc_howto_type elf32_arm_howto_table[] = |
| { |
| /* No relocation */ |
| HOWTO (R_ARM_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_ARM_NONE", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_PC24, /* type */ |
| 2, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 24, /* bitsize */ |
| TRUE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_PC24", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x00ffffff, /* src_mask */ |
| 0x00ffffff, /* dst_mask */ |
| TRUE), /* pcrel_offset */ |
| |
| /* 32 bit absolute */ |
| HOWTO (R_ARM_ABS32, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_ABS32", /* name */ |
| FALSE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* standard 32bit pc-relative reloc */ |
| HOWTO (R_ARM_REL32, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| TRUE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_REL32", /* name */ |
| FALSE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| TRUE), /* pcrel_offset */ |
| |
| /* 8 bit absolute */ |
| HOWTO (R_ARM_PC13, /* type */ |
| 0, /* rightshift */ |
| 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 8, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_PC13", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x000000ff, /* src_mask */ |
| 0x000000ff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 16 bit absolute */ |
| HOWTO (R_ARM_ABS16, /* type */ |
| 0, /* rightshift */ |
| 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 16, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_ABS16", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x0000ffff, /* src_mask */ |
| 0x0000ffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 12 bit absolute */ |
| HOWTO (R_ARM_ABS12, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 12, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_ABS12", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x000008ff, /* src_mask */ |
| 0x000008ff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_THM_ABS5, /* type */ |
| 6, /* rightshift */ |
| 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 5, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_THM_ABS5", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x000007e0, /* src_mask */ |
| 0x000007e0, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* 8 bit absolute */ |
| HOWTO (R_ARM_ABS8, /* type */ |
| 0, /* rightshift */ |
| 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 8, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_ABS8", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x000000ff, /* src_mask */ |
| 0x000000ff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_SBREL32, /* 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_ARM_SBREL32", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_THM_PC22, /* type */ |
| 1, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 23, /* bitsize */ |
| TRUE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_THM_PC22", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x07ff07ff, /* src_mask */ |
| 0x07ff07ff, /* dst_mask */ |
| TRUE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_THM_PC8, /* type */ |
| 1, /* rightshift */ |
| 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 8, /* bitsize */ |
| TRUE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_THM_PC8", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x000000ff, /* src_mask */ |
| 0x000000ff, /* dst_mask */ |
| TRUE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_AMP_VCALL9, /* type */ |
| 1, /* rightshift */ |
| 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 8, /* bitsize */ |
| TRUE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_AMP_VCALL9", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x000000ff, /* src_mask */ |
| 0x000000ff, /* dst_mask */ |
| TRUE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_SWI24, /* type */ |
| 0, /* rightshift */ |
| 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 0, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_SWI24", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x00000000, /* src_mask */ |
| 0x00000000, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_THM_SWI8, /* type */ |
| 0, /* rightshift */ |
| 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 0, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_SWI8", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x00000000, /* src_mask */ |
| 0x00000000, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* BLX instruction for the ARM. */ |
| HOWTO (R_ARM_XPC25, /* type */ |
| 2, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 25, /* bitsize */ |
| TRUE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_XPC25", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x00ffffff, /* src_mask */ |
| 0x00ffffff, /* dst_mask */ |
| TRUE), /* pcrel_offset */ |
| |
| /* BLX instruction for the Thumb. */ |
| HOWTO (R_ARM_THM_XPC22, /* type */ |
| 2, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 22, /* bitsize */ |
| TRUE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_THM_XPC22", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x07ff07ff, /* src_mask */ |
| 0x07ff07ff, /* dst_mask */ |
| TRUE), /* pcrel_offset */ |
| |
| /* These next three relocs are not defined, but we need to fill the space. */ |
| |
| HOWTO (R_ARM_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_ARM_unknown_17", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_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_ARM_unknown_18", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_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_ARM_unknown_19", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| /* Relocs used in ARM Linux */ |
| |
| HOWTO (R_ARM_COPY, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_COPY", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_GLOB_DAT, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_GLOB_DAT", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_JUMP_SLOT, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_JUMP_SLOT", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_RELATIVE, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_RELATIVE", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_GOTOFF, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_GOTOFF", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_GOTPC, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| TRUE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_GOTPC", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| TRUE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_GOT32, /* type */ |
| 0, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 32, /* bitsize */ |
| FALSE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_GOT32", /* name */ |
| TRUE, /* partial_inplace */ |
| 0xffffffff, /* src_mask */ |
| 0xffffffff, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_PLT32, /* type */ |
| 2, /* rightshift */ |
| 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 26, /* bitsize */ |
| TRUE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_bitfield,/* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_PLT32", /* name */ |
| TRUE, /* partial_inplace */ |
| 0x00ffffff, /* src_mask */ |
| 0x00ffffff, /* dst_mask */ |
| TRUE), /* pcrel_offset */ |
| |
| /* End of relocs used in ARM Linux */ |
| |
| HOWTO (R_ARM_RREL32, /* 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_ARM_RREL32", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_RABS32, /* 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_ARM_RABS32", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_RPC24, /* 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_ARM_RPC24", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| HOWTO (R_ARM_RBASE, /* 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_ARM_RBASE", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| FALSE), /* pcrel_offset */ |
| |
| }; |
| |
| /* GNU extension to record C++ vtable hierarchy */ |
| static reloc_howto_type elf32_arm_vtinherit_howto = |
| HOWTO (R_ARM_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_ARM_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 elf32_arm_vtentry_howto = |
| HOWTO (R_ARM_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_ARM_GNU_VTENTRY", /* name */ |
| FALSE, /* partial_inplace */ |
| 0, /* src_mask */ |
| 0, /* dst_mask */ |
| FALSE); /* pcrel_offset */ |
| |
| /* 12 bit pc relative */ |
| static reloc_howto_type elf32_arm_thm_pc11_howto = |
| HOWTO (R_ARM_THM_PC11, /* type */ |
| 1, /* rightshift */ |
| 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 11, /* bitsize */ |
| TRUE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_THM_PC11", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x000007ff, /* src_mask */ |
| 0x000007ff, /* dst_mask */ |
| TRUE); /* pcrel_offset */ |
| |
| /* 12 bit pc relative */ |
| static reloc_howto_type elf32_arm_thm_pc9_howto = |
| HOWTO (R_ARM_THM_PC9, /* type */ |
| 1, /* rightshift */ |
| 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 8, /* bitsize */ |
| TRUE, /* pc_relative */ |
| 0, /* bitpos */ |
| complain_overflow_signed, /* complain_on_overflow */ |
| bfd_elf_generic_reloc, /* special_function */ |
| "R_ARM_THM_PC9", /* name */ |
| FALSE, /* partial_inplace */ |
| 0x000000ff, /* src_mask */ |
| 0x000000ff, /* dst_mask */ |
| TRUE); /* pcrel_offset */ |
| |
| static void elf32_arm_info_to_howto |
| PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
| |
| static void |
| elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc) |
| bfd * abfd ATTRIBUTE_UNUSED; |
| arelent * bfd_reloc; |
| Elf_Internal_Rela * elf_reloc; |
| { |
| unsigned int r_type; |
| |
| r_type = ELF32_R_TYPE (elf_reloc->r_info); |
| |
| switch (r_type) |
| { |
| case R_ARM_GNU_VTINHERIT: |
| bfd_reloc->howto = & elf32_arm_vtinherit_howto; |
| break; |
| |
| case R_ARM_GNU_VTENTRY: |
| bfd_reloc->howto = & elf32_arm_vtentry_howto; |
| break; |
| |
| case R_ARM_THM_PC11: |
| bfd_reloc->howto = & elf32_arm_thm_pc11_howto; |
| break; |
| |
| case R_ARM_THM_PC9: |
| bfd_reloc->howto = & elf32_arm_thm_pc9_howto; |
| break; |
| |
| default: |
| if (r_type >= NUM_ELEM (elf32_arm_howto_table)) |
| bfd_reloc->howto = NULL; |
| else |
| bfd_reloc->howto = & elf32_arm_howto_table[r_type]; |
| break; |
| } |
| } |
| |
| struct elf32_arm_reloc_map |
| { |
| bfd_reloc_code_real_type bfd_reloc_val; |
| unsigned char elf_reloc_val; |
| }; |
| |
| static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] = |
| { |
| {BFD_RELOC_NONE, R_ARM_NONE}, |
| {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24}, |
| {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25}, |
| {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22}, |
| {BFD_RELOC_32, R_ARM_ABS32}, |
| {BFD_RELOC_32_PCREL, R_ARM_REL32}, |
| {BFD_RELOC_8, R_ARM_ABS8}, |
| {BFD_RELOC_16, R_ARM_ABS16}, |
| {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12}, |
| {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5}, |
| {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22}, |
| {BFD_RELOC_ARM_COPY, R_ARM_COPY}, |
| {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT}, |
| {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT}, |
| {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE}, |
| {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF}, |
| {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC}, |
| {BFD_RELOC_ARM_GOT32, R_ARM_GOT32}, |
| {BFD_RELOC_ARM_PLT32, R_ARM_PLT32} |
| }; |
| |
| static reloc_howto_type * |
| elf32_arm_reloc_type_lookup (abfd, code) |
| bfd *abfd ATTRIBUTE_UNUSED; |
| bfd_reloc_code_real_type code; |
| { |
| unsigned int i; |
| |
| switch (code) |
| { |
| case BFD_RELOC_VTABLE_INHERIT: |
| return & elf32_arm_vtinherit_howto; |
| |
| case BFD_RELOC_VTABLE_ENTRY: |
| return & elf32_arm_vtentry_howto; |
| |
| case BFD_RELOC_THUMB_PCREL_BRANCH12: |
| return & elf32_arm_thm_pc11_howto; |
| |
| case BFD_RELOC_THUMB_PCREL_BRANCH9: |
| return & elf32_arm_thm_pc9_howto; |
| |
| default: |
| for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++) |
| if (elf32_arm_reloc_map[i].bfd_reloc_val == code) |
| return & elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val]; |
| |
| return NULL; |
| } |
| } |
| |
| /* Support for core dump NOTE sections */ |
| static bfd_boolean |
| elf32_arm_nabi_grok_prstatus (abfd, note) |
| bfd *abfd; |
| Elf_Internal_Note *note; |
| { |
| int offset; |
| size_t raw_size; |
| |
| switch (note->descsz) |
| { |
| default: |
| return FALSE; |
| |
| case 148: /* Linux/ARM 32-bit*/ |
| /* 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 + 24); |
| |
| /* pr_reg */ |
| offset = 72; |
| raw_size = 72; |
| |
| break; |
| } |
| |
| /* Make a ".reg/999" section. */ |
| return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
| raw_size, note->descpos + offset); |
| } |
| |
| static bfd_boolean |
| elf32_arm_nabi_grok_psinfo (abfd, note) |
| bfd *abfd; |
| Elf_Internal_Note *note; |
| { |
| switch (note->descsz) |
| { |
| default: |
| return FALSE; |
| |
| case 124: /* Linux/ARM elf_prpsinfo */ |
| elf_tdata (abfd)->core_program |
| = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
| elf_tdata (abfd)->core_command |
| = _bfd_elfcore_strndup (abfd, note->descdata + 44, 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; |
| } |
| |
| #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus |
| #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo |
| |
| #include "elf32-arm.h" |
