| /* 32-bit ELF support for ARM old abi option. |
| Copyright 1999 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-oabi.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_RELA |
| |
| #define TARGET_LITTLE_SYM bfd_elf32_littlearm_oabi_vec |
| #define TARGET_LITTLE_NAME "elf32-littlearm-oabi" |
| #define TARGET_BIG_SYM bfd_elf32_bigarm_oabi_vec |
| #define TARGET_BIG_NAME "elf32-bigarm-oabi" |
| |
| #define elf_info_to_howto elf32_arm_info_to_howto |
| #define elf_info_to_howto_rel 0 |
| |
| #define ARM_ELF_ABI_VERSION 0 |
| #define ARM_ELF_OS_ABI_VERSION 0 |
| |
| 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_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 */ |
| |
| /* 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 */ |
| 0, /* src_mask */ |
| 0, /* 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 */ |
| |
| 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_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_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 */ |
| |
| /* 12 bit pc relative */ |
| 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 */ |
| 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 */ |
| |
| /* GNU extension to record C++ vtable hierarchy */ |
| 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 */ |
| 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 */ |
| |
| /* XXX - gap in index numbering here. */ |
| |
| 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 */ |
| |
| /* XXX - gap in index numbering here. */ |
| |
| 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 */ |
| }; |
| |
| /* Locate a reloc in the howto table. This function must be used |
| when the entry number is is > R_ARM_GNU_VTINHERIT. */ |
| static reloc_howto_type * |
| find_howto (r_type) |
| unsigned int r_type; |
| { |
| int i; |
| |
| for (i = NUM_ELEM (elf32_arm_howto_table); i--;) |
| if (elf32_arm_howto_table [i].type == r_type) |
| return elf32_arm_howto_table + i; |
| |
| return NULL; |
| } |
| |
| static void |
| elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc) |
| bfd *abfd ATTRIBUTE_UNUSED; |
| arelent *bfd_reloc; |
| Elf32_Internal_Rela *elf_reloc; |
| { |
| unsigned int r_type; |
| |
| r_type = ELF32_R_TYPE (elf_reloc->r_info); |
| |
| if (r_type <= R_ARM_GNU_VTINHERIT) |
| bfd_reloc->howto = & elf32_arm_howto_table[r_type]; |
| else |
| bfd_reloc->howto = find_howto (r_type); |
| } |
| |
| 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_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_NONE, R_ARM_SBREL32 }, |
| {BFD_RELOC_NONE, R_ARM_AMP_VCALL9 }, |
| {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_PC11 }, |
| {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_PC9 }, |
| {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT }, |
| {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY } |
| }; |
| |
| static reloc_howto_type * |
| elf32_arm_reloc_type_lookup (abfd, code) |
| bfd * abfd ATTRIBUTE_UNUSED; |
| bfd_reloc_code_real_type code; |
| { |
| unsigned int i; |
| |
| for (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]; |
| |
| if (code == BFD_RELOC_ARM_PLT32) |
| return find_howto (R_ARM_PLT32); |
| |
| return NULL; |
| } |
| |
| #define bfd_elf32_arm_allocate_interworking_sections \ |
| bfd_elf32_arm_oabi_allocate_interworking_sections |
| #define bfd_elf32_arm_get_bfd_for_interworking \ |
| bfd_elf32_arm_oabi_get_bfd_for_interworking |
| #define bfd_elf32_arm_process_before_allocation \ |
| bfd_elf32_arm_oabi_process_before_allocation |
| |
| #include "elf32-arm.h" |
