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freebsd-dev/contrib/binutils/bfd/elfarm-oabi.c
David E. O'Brien 78ce21c1df Import of Binutils 2.10 snapshot.
2000-05-12 23:15:20 +00:00

421 lines
13 KiB
C
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/* 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"
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