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binutils-gdb/bfd/elf32-tic6x.c

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/* 32-bit ELF support for TI C6X
Copyright 2010
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 3 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., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#include "libiberty.h"
#include "elf-bfd.h"
#include "elf/tic6x.h"
static reloc_howto_type elf32_tic6x_howto_table[] =
{
HOWTO (R_C6000_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_C6000_NONE", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_ABS32, /* 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_C6000_ABS32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_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_C6000_ABS16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_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_C6000_ABS8", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x000000ff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_PCR_S21, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
21, /* bitsize */
TRUE, /* pc_relative */
7, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PCR_S21", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x0fffff80, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_C6000_PCR_S12, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
12, /* bitsize */
TRUE, /* pc_relative */
16, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PCR_S12", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x0fff0000, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_C6000_PCR_S10, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
10, /* bitsize */
TRUE, /* pc_relative */
13, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PCR_S10", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fe000, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_C6000_PCR_S7, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
7, /* bitsize */
TRUE, /* pc_relative */
16, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PCR_S7", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007f0000, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_C6000_ABS_S16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
7, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ABS_S16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_ABS_L16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ABS_L16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_ABS_H16, /* type */
16, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_ABS_H16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_SBR_U15_B, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
15, /* bitsize */
FALSE, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_U15_B", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff00, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_SBR_U15_H, /* type */
1, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
15, /* bitsize */
FALSE, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_U15_H", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff00, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_SBR_U15_W, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
15, /* bitsize */
FALSE, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_U15_W", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff00, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_SBR_S16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
7, /* bitpos */
complain_overflow_signed,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_S16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_SBR_L16_B, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_L16_B", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_SBR_L16_H, /* type */
1, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_L16_H", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_SBR_L16_W, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_L16_W", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_SBR_H16_B, /* type */
16, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_H16_B", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_SBR_H16_H, /* type */
17, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_H16_H", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_SBR_H16_W, /* type */
18, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_H16_W", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_SBR_GOT_U15_W, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
15, /* bitsize */
FALSE, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_GOT_U15_W",/* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff00, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_SBR_GOT_L16_W, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_GOT_L16_W",/* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_SBR_GOT_H16_W, /* type */
18, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
7, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_SBR_GOT_H16_W",/* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff80, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_DSBT_INDEX, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
15, /* bitsize */
FALSE, /* pc_relative */
8, /* bitpos */
complain_overflow_unsigned,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_DSBT_INDEX", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x007fff00, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_PREL31, /* type */
1, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
31, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_C6000_PREL31", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0x7fffffff, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_COPY, /* 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_C6000_COPY", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
EMPTY_HOWTO (27),
EMPTY_HOWTO (28),
EMPTY_HOWTO (29),
EMPTY_HOWTO (30),
EMPTY_HOWTO (31),
EMPTY_HOWTO (32),
EMPTY_HOWTO (33),
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HOWTO (R_C6000_ALIGN, /* 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_C6000_ALIGN", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_FPHEAD, /* 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_C6000_FPHEAD", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
HOWTO (R_C6000_NOCMP, /* 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_C6000_NOCMP", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE) /* pcrel_offset */
};
/* Map BFD relocations to ELF relocations. */
typedef struct
{
bfd_reloc_code_real_type bfd_reloc_val;
enum elf_tic6x_reloc_type elf_reloc_val;
} tic6x_reloc_map;
static const tic6x_reloc_map elf32_tic6x_reloc_map[] =
{
{ BFD_RELOC_NONE, R_C6000_NONE },
{ BFD_RELOC_32, R_C6000_ABS32 },
{ BFD_RELOC_16, R_C6000_ABS16 },
{ BFD_RELOC_8, R_C6000_ABS8 },
{ BFD_RELOC_C6000_PCR_S21, R_C6000_PCR_S21 },
{ BFD_RELOC_C6000_PCR_S12, R_C6000_PCR_S12 },
{ BFD_RELOC_C6000_PCR_S10, R_C6000_PCR_S10 },
{ BFD_RELOC_C6000_PCR_S7, R_C6000_PCR_S7 },
{ BFD_RELOC_C6000_ABS_S16, R_C6000_ABS_S16 },
{ BFD_RELOC_C6000_ABS_L16, R_C6000_ABS_L16 },
{ BFD_RELOC_C6000_ABS_H16, R_C6000_ABS_H16 },
{ BFD_RELOC_C6000_SBR_U15_B, R_C6000_SBR_U15_B },
{ BFD_RELOC_C6000_SBR_U15_H, R_C6000_SBR_U15_H },
{ BFD_RELOC_C6000_SBR_U15_W, R_C6000_SBR_U15_W },
{ BFD_RELOC_C6000_SBR_S16, R_C6000_SBR_S16 },
{ BFD_RELOC_C6000_SBR_L16_B, R_C6000_SBR_L16_B },
{ BFD_RELOC_C6000_SBR_L16_H, R_C6000_SBR_L16_H },
{ BFD_RELOC_C6000_SBR_L16_W, R_C6000_SBR_L16_W },
{ BFD_RELOC_C6000_SBR_H16_B, R_C6000_SBR_H16_B },
{ BFD_RELOC_C6000_SBR_H16_H, R_C6000_SBR_H16_H },
{ BFD_RELOC_C6000_SBR_H16_W, R_C6000_SBR_H16_W },
{ BFD_RELOC_C6000_SBR_GOT_U15_W, R_C6000_SBR_GOT_U15_W },
{ BFD_RELOC_C6000_SBR_GOT_L16_W, R_C6000_SBR_GOT_L16_W },
{ BFD_RELOC_C6000_SBR_GOT_H16_W, R_C6000_SBR_GOT_H16_W },
{ BFD_RELOC_C6000_DSBT_INDEX, R_C6000_DSBT_INDEX },
{ BFD_RELOC_C6000_PREL31, R_C6000_PREL31 },
{ BFD_RELOC_C6000_COPY, R_C6000_COPY },
{ BFD_RELOC_C6000_ALIGN, R_C6000_ALIGN },
{ BFD_RELOC_C6000_FPHEAD, R_C6000_FPHEAD },
{ BFD_RELOC_C6000_NOCMP, R_C6000_NOCMP }
};
static reloc_howto_type *
elf32_tic6x_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE (elf32_tic6x_reloc_map); i++)
if (elf32_tic6x_reloc_map[i].bfd_reloc_val == code)
return &elf32_tic6x_howto_table[elf32_tic6x_reloc_map[i].elf_reloc_val];
return NULL;
}
static reloc_howto_type *
elf32_tic6x_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE (elf32_tic6x_howto_table); i++)
if (elf32_tic6x_howto_table[i].name != NULL
&& strcasecmp (elf32_tic6x_howto_table[i].name, r_name) == 0)
return &elf32_tic6x_howto_table[i];
return NULL;
}
static void
elf32_tic6x_info_to_howto (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);
if (r_type >= ARRAY_SIZE (elf32_tic6x_howto_table))
bfd_reloc->howto = NULL;
else
bfd_reloc->howto = &elf32_tic6x_howto_table[r_type];
}
static bfd_boolean
elf32_tic6x_relocate_section (bfd *output_bfd,
struct bfd_link_info *info,
bfd *input_bfd,
asection *input_section,
bfd_byte *contents,
Elf_Internal_Rela *relocs,
Elf_Internal_Sym *local_syms,
asection **local_sections)
{
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
bfd_boolean ok = TRUE;
symtab_hdr = & elf_symtab_hdr (input_bfd);
sym_hashes = elf_sym_hashes (input_bfd);
relend = relocs + input_section->reloc_count;
for (rel = relocs; rel < relend; rel ++)
{
int r_type;
unsigned long r_symndx;
arelent bfd_reloc;
reloc_howto_type *howto;
Elf_Internal_Sym *sym;
asection *sec;
struct elf_link_hash_entry *h;
bfd_vma relocation;
bfd_boolean unresolved_reloc;
bfd_reloc_status_type r;
struct bfd_link_hash_entry *sbh;
r_type = ELF32_R_TYPE (rel->r_info);
r_symndx = ELF32_R_SYM (rel->r_info);
elf32_tic6x_info_to_howto (input_bfd, &bfd_reloc, rel);
howto = bfd_reloc.howto;
if (howto == NULL)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
h = NULL;
sym = NULL;
sec = NULL;
unresolved_reloc = FALSE;
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
}
else
{
bfd_boolean warned;
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
r_symndx, symtab_hdr, sym_hashes,
h, sec, relocation,
unresolved_reloc, warned);
}
if (sec != NULL && elf_discarded_section (sec))
{
/* For relocs against symbols from removed linkonce sections,
or sections discarded by a linker script, we just want the
section contents zeroed. Avoid any special processing. */
_bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
rel->r_info = 0;
rel->r_addend = 0;
continue;
}
if (info->relocatable)
continue;
switch (r_type)
{
case R_C6000_NONE:
case R_C6000_ALIGN:
case R_C6000_FPHEAD:
case R_C6000_NOCMP:
/* No action needed. */
continue;
case R_C6000_PCR_S21:
case R_C6000_PCR_S12:
case R_C6000_PCR_S10:
case R_C6000_PCR_S7:
/* Generic PC-relative handling produces a value relative to
the exact location of the relocation. Adjust it to be
relative to the start of the fetch packet instead. */
relocation += (input_section->output_section->vma
+ input_section->output_offset
+ rel->r_offset) & 0x1f;
/* Fall through. */
case R_C6000_ABS32:
case R_C6000_ABS16:
case R_C6000_ABS8:
case R_C6000_ABS_S16:
case R_C6000_ABS_L16:
case R_C6000_ABS_H16:
/* Generic logic OK. */
break;
case R_C6000_SBR_U15_B:
case R_C6000_SBR_U15_H:
case R_C6000_SBR_U15_W:
case R_C6000_SBR_S16:
case R_C6000_SBR_L16_B:
case R_C6000_SBR_L16_H:
case R_C6000_SBR_L16_W:
case R_C6000_SBR_H16_B:
case R_C6000_SBR_H16_H:
case R_C6000_SBR_H16_W:
sbh = bfd_link_hash_lookup (info->hash, "__c6xabi_DSBT_BASE",
FALSE, FALSE, TRUE);
if (sbh != NULL
&& (sbh->type == bfd_link_hash_defined
|| sbh->type == bfd_link_hash_defweak))
relocation -= (sbh->u.def.value
+ sbh->u.def.section->output_section->vma
+ sbh->u.def.section->output_offset);
else
{
(*_bfd_error_handler) (_("%B: SB-relative relocation but "
"__c6xabi_DSBT_BASE not defined"),
input_bfd);
ok = FALSE;
continue;
}
break;
case R_C6000_SBR_GOT_U15_W:
case R_C6000_SBR_GOT_L16_W:
case R_C6000_SBR_GOT_H16_W:
case R_C6000_DSBT_INDEX:
case R_C6000_PREL31:
/* Shared libraries and exception handling support not
implemented. */
(*_bfd_error_handler) (_("%B: relocation type %d not implemented"),
input_bfd, r_type);
ok = FALSE;
continue;
case R_C6000_COPY:
/* Invalid in relocatable object. */
default:
/* Unknown relocation. */
(*_bfd_error_handler) (_("%B: invalid relocation type %d"),
input_bfd, r_type);
ok = FALSE;
continue;
}
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset,
relocation, rel->r_addend);
if (r == bfd_reloc_ok
&& howto->complain_on_overflow == complain_overflow_bitfield)
{
/* Generic overflow handling accepts cases the ABI says
should be rejected for R_C6000_ABS16 and
R_C6000_ABS8. */
bfd_vma value = (relocation + rel->r_addend) & 0xffffffff;
bfd_vma sbit = 1 << (howto->bitsize - 1);
bfd_vma sbits = (-(bfd_vma) sbit) & 0xffffffff;
bfd_vma value_sbits = value & sbits;
if (value_sbits != 0
&& value_sbits != sbit
&& value_sbits != sbits)
r = bfd_reloc_overflow;
}
if (r != bfd_reloc_ok)
{
const char *name;
const char *error_message;
if (h != NULL)
name = h->root.root.string;
else
{
name = bfd_elf_string_from_elf_section (input_bfd,
symtab_hdr->sh_link,
sym->st_name);
if (name == NULL)
return FALSE;
if (*name == '\0')
name = bfd_section_name (input_bfd, sec);
}
switch (r)
{
case bfd_reloc_overflow:
/* If the overflowing reloc was to an undefined symbol,
we have already printed one error message and there
is no point complaining again. */
if ((! h ||
h->root.type != bfd_link_hash_undefined)
&& (!((*info->callbacks->reloc_overflow)
(info, (h ? &h->root : NULL), name, howto->name,
(bfd_vma) 0, input_bfd, input_section,
rel->r_offset))))
return FALSE;
break;
case bfd_reloc_undefined:
if (!((*info->callbacks->undefined_symbol)
(info, name, input_bfd, input_section,
rel->r_offset, TRUE)))
return FALSE;
break;
case bfd_reloc_outofrange:
error_message = _("out of range");
goto common_error;
case bfd_reloc_notsupported:
error_message = _("unsupported relocation");
goto common_error;
case bfd_reloc_dangerous:
error_message = _("dangerous relocation");
goto common_error;
default:
error_message = _("unknown error");
/* Fall through. */
common_error:
BFD_ASSERT (error_message != NULL);
if (!((*info->callbacks->reloc_dangerous)
(info, error_message, input_bfd, input_section,
rel->r_offset)))
return FALSE;
break;
}
}
}
return ok;
}
#define TARGET_LITTLE_SYM bfd_elf32_tic6x_le_vec
#define TARGET_LITTLE_NAME "elf32-tic6x-le"
#define TARGET_BIG_SYM bfd_elf32_tic6x_be_vec
#define TARGET_BIG_NAME "elf32-tic6x-be"
#define ELF_ARCH bfd_arch_tic6x
#define ELF_MACHINE_CODE EM_TI_C6000
#define ELF_MAXPAGESIZE 1
#define bfd_elf32_bfd_reloc_type_lookup elf32_tic6x_reloc_type_lookup
#define bfd_elf32_bfd_reloc_name_lookup elf32_tic6x_reloc_name_lookup
#define elf_backend_can_gc_sections 1
#define elf_backend_default_use_rela_p 1
#define elf_backend_may_use_rel_p 1
#define elf_backend_may_use_rela_p 1
#define elf_backend_rela_normal 1
#define elf_backend_relocate_section elf32_tic6x_relocate_section
#define elf_info_to_howto elf32_tic6x_info_to_howto
#define elf_info_to_howto_rel _bfd_elf_no_info_to_howto
#include "elf32-target.h"
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