792 lines
24 KiB
C
792 lines
24 KiB
C
/* FR30-specific support for 32-bit ELF.
|
||
Copyright 1998, 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 "bfd.h"
|
||
#include "sysdep.h"
|
||
#include "libbfd.h"
|
||
#include "elf-bfd.h"
|
||
#include "elf/fr30.h"
|
||
|
||
/* Forward declarations. */
|
||
static bfd_reloc_status_type fr30_elf_i20_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
static bfd_reloc_status_type fr30_elf_i32_reloc
|
||
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
|
||
static reloc_howto_type * fr30_reloc_type_lookup
|
||
PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
|
||
static void fr30_info_to_howto_rela
|
||
PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
|
||
static bfd_boolean fr30_elf_relocate_section
|
||
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
|
||
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
|
||
static bfd_reloc_status_type fr30_final_link_relocate
|
||
PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
|
||
Elf_Internal_Rela *, bfd_vma));
|
||
static bfd_boolean fr30_elf_gc_sweep_hook
|
||
PARAMS ((bfd *, struct bfd_link_info *, asection *,
|
||
const Elf_Internal_Rela *));
|
||
static asection * fr30_elf_gc_mark_hook
|
||
PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
|
||
struct elf_link_hash_entry *, Elf_Internal_Sym *));
|
||
static bfd_boolean fr30_elf_check_relocs
|
||
PARAMS ((bfd *, struct bfd_link_info *, asection *,
|
||
const Elf_Internal_Rela *));
|
||
|
||
static reloc_howto_type fr30_elf_howto_table [] =
|
||
{
|
||
/* This reloc does nothing. */
|
||
HOWTO (R_FR30_NONE, /* 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_FR30_NONE", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* An 8 bit absolute relocation. */
|
||
HOWTO (R_FR30_8, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
8, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
4, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_FR30_8", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000, /* src_mask */
|
||
0x0ff0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 20 bit absolute relocation. */
|
||
HOWTO (R_FR30_20, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
20, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
fr30_elf_i20_reloc, /* special_function */
|
||
"R_FR30_20", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x00000000, /* src_mask */
|
||
0x00f0ffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 32 bit absolute relocation. */
|
||
HOWTO (R_FR30_32, /* 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_FR30_32", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x00000000, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 32 bit into 48 bits absolute relocation. */
|
||
HOWTO (R_FR30_48, /* type */
|
||
0, /* rightshift */
|
||
2, /* size (0 = byte, 1 = short, 2 = long) */
|
||
32, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_bitfield, /* complain_on_overflow */
|
||
fr30_elf_i32_reloc, /* special_function */
|
||
"R_FR30_48", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x00000000, /* src_mask */
|
||
0xffffffff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 6 bit absolute relocation. */
|
||
HOWTO (R_FR30_6_IN_4, /* type */
|
||
2, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
6, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
4, /* bitpos */
|
||
complain_overflow_unsigned, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_FR30_6_IN_4", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000, /* src_mask */
|
||
0x00f0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* An 8 bit absolute relocation. */
|
||
HOWTO (R_FR30_8_IN_8, /* type */
|
||
0, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
8, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
4, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc,/* special_function */
|
||
"R_FR30_8_IN_8", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000, /* src_mask */
|
||
0x0ff0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 9 bit absolute relocation. */
|
||
HOWTO (R_FR30_9_IN_8, /* type */
|
||
1, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
9, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
4, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc,/* special_function */
|
||
"R_FR30_9_IN_8", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000, /* src_mask */
|
||
0x0ff0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A 10 bit absolute relocation. */
|
||
HOWTO (R_FR30_10_IN_8, /* type */
|
||
2, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
10, /* bitsize */
|
||
FALSE, /* pc_relative */
|
||
4, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc,/* special_function */
|
||
"R_FR30_10_IN_8", /* name */
|
||
TRUE, /* partial_inplace */
|
||
0x0000, /* src_mask */
|
||
0x0ff0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A PC relative 9 bit relocation, right shifted by 1. */
|
||
HOWTO (R_FR30_9_PCREL, /* type */
|
||
1, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
9, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_FR30_9_PCREL", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0000, /* src_mask */
|
||
0x00ff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
|
||
/* A PC relative 12 bit relocation, right shifted by 1. */
|
||
HOWTO (R_FR30_12_PCREL, /* type */
|
||
1, /* rightshift */
|
||
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
12, /* bitsize */
|
||
TRUE, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_signed, /* complain_on_overflow */
|
||
bfd_elf_generic_reloc, /* special_function */
|
||
"R_FR30_12_PCREL", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0x0000, /* src_mask */
|
||
0x07ff, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
/* GNU extension to record C++ vtable hierarchy */
|
||
HOWTO (R_FR30_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_FR30_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_FR30_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_FR30_GNU_VTENTRY", /* name */
|
||
FALSE, /* partial_inplace */
|
||
0, /* src_mask */
|
||
0, /* dst_mask */
|
||
FALSE), /* pcrel_offset */
|
||
};
|
||
|
||
/* Utility to actually perform an R_FR30_20 reloc. */
|
||
|
||
static bfd_reloc_status_type
|
||
fr30_elf_i20_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 ATTRIBUTE_UNUSED;
|
||
{
|
||
bfd_vma relocation;
|
||
unsigned long x;
|
||
|
||
/* This part is from bfd_elf_generic_reloc. */
|
||
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 != NULL)
|
||
/* FIXME: See bfd_perform_relocation. Is this right? */
|
||
return bfd_reloc_ok;
|
||
|
||
relocation =
|
||
symbol->value
|
||
+ symbol->section->output_section->vma
|
||
+ symbol->section->output_offset
|
||
+ reloc_entry->addend;
|
||
|
||
if (relocation > (((bfd_vma) 1 << 20) - 1))
|
||
return bfd_reloc_overflow;
|
||
|
||
x = bfd_get_32 (abfd, (char *) data + reloc_entry->address);
|
||
x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4);
|
||
bfd_put_32 (abfd, (bfd_vma) x, (char *) data + reloc_entry->address);
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* Utility to actually perform a R_FR30_48 reloc. */
|
||
|
||
static bfd_reloc_status_type
|
||
fr30_elf_i32_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 ATTRIBUTE_UNUSED;
|
||
{
|
||
bfd_vma relocation;
|
||
|
||
/* This part is from bfd_elf_generic_reloc. */
|
||
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 != NULL)
|
||
/* FIXME: See bfd_perform_relocation. Is this right? */
|
||
return bfd_reloc_ok;
|
||
|
||
relocation =
|
||
symbol->value
|
||
+ symbol->section->output_section->vma
|
||
+ symbol->section->output_offset
|
||
+ reloc_entry->addend;
|
||
|
||
bfd_put_32 (abfd, relocation, (char *) data + reloc_entry->address + 2);
|
||
|
||
return bfd_reloc_ok;
|
||
}
|
||
|
||
/* Map BFD reloc types to FR30 ELF reloc types. */
|
||
|
||
struct fr30_reloc_map
|
||
{
|
||
bfd_reloc_code_real_type bfd_reloc_val;
|
||
unsigned int fr30_reloc_val;
|
||
};
|
||
|
||
static const struct fr30_reloc_map fr30_reloc_map [] =
|
||
{
|
||
{ BFD_RELOC_NONE, R_FR30_NONE },
|
||
{ BFD_RELOC_8, R_FR30_8 },
|
||
{ BFD_RELOC_FR30_20, R_FR30_20 },
|
||
{ BFD_RELOC_32, R_FR30_32 },
|
||
{ BFD_RELOC_FR30_48, R_FR30_48 },
|
||
{ BFD_RELOC_FR30_6_IN_4, R_FR30_6_IN_4 },
|
||
{ BFD_RELOC_FR30_8_IN_8, R_FR30_8_IN_8 },
|
||
{ BFD_RELOC_FR30_9_IN_8, R_FR30_9_IN_8 },
|
||
{ BFD_RELOC_FR30_10_IN_8, R_FR30_10_IN_8 },
|
||
{ BFD_RELOC_FR30_9_PCREL, R_FR30_9_PCREL },
|
||
{ BFD_RELOC_FR30_12_PCREL, R_FR30_12_PCREL },
|
||
{ BFD_RELOC_VTABLE_INHERIT, R_FR30_GNU_VTINHERIT },
|
||
{ BFD_RELOC_VTABLE_ENTRY, R_FR30_GNU_VTENTRY },
|
||
};
|
||
|
||
static reloc_howto_type *
|
||
fr30_reloc_type_lookup (abfd, code)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
bfd_reloc_code_real_type code;
|
||
{
|
||
unsigned int i;
|
||
|
||
for (i = sizeof (fr30_reloc_map) / sizeof (fr30_reloc_map[0]);
|
||
--i;)
|
||
if (fr30_reloc_map [i].bfd_reloc_val == code)
|
||
return & fr30_elf_howto_table [fr30_reloc_map[i].fr30_reloc_val];
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Set the howto pointer for an FR30 ELF reloc. */
|
||
|
||
static void
|
||
fr30_info_to_howto_rela (abfd, cache_ptr, dst)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
arelent *cache_ptr;
|
||
Elf_Internal_Rela *dst;
|
||
{
|
||
unsigned int r_type;
|
||
|
||
r_type = ELF32_R_TYPE (dst->r_info);
|
||
BFD_ASSERT (r_type < (unsigned int) R_FR30_max);
|
||
cache_ptr->howto = & fr30_elf_howto_table [r_type];
|
||
}
|
||
|
||
/* Perform a single relocation. By default we use the standard BFD
|
||
routines, but a few relocs, we have to do them ourselves. */
|
||
|
||
static bfd_reloc_status_type
|
||
fr30_final_link_relocate (howto, input_bfd, input_section, contents, rel,
|
||
relocation)
|
||
reloc_howto_type *howto;
|
||
bfd *input_bfd;
|
||
asection *input_section;
|
||
bfd_byte *contents;
|
||
Elf_Internal_Rela *rel;
|
||
bfd_vma relocation;
|
||
{
|
||
bfd_reloc_status_type r = bfd_reloc_ok;
|
||
bfd_vma x;
|
||
bfd_signed_vma srel;
|
||
|
||
switch (howto->type)
|
||
{
|
||
case R_FR30_20:
|
||
contents += rel->r_offset;
|
||
relocation += rel->r_addend;
|
||
|
||
if (relocation > ((1 << 20) - 1))
|
||
return bfd_reloc_overflow;
|
||
|
||
x = bfd_get_32 (input_bfd, contents);
|
||
x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4);
|
||
bfd_put_32 (input_bfd, x, contents);
|
||
break;
|
||
|
||
case R_FR30_48:
|
||
contents += rel->r_offset + 2;
|
||
relocation += rel->r_addend;
|
||
bfd_put_32 (input_bfd, relocation, contents);
|
||
break;
|
||
|
||
case R_FR30_9_PCREL:
|
||
contents += rel->r_offset + 1;
|
||
srel = (bfd_signed_vma) relocation;
|
||
srel += rel->r_addend;
|
||
srel -= rel->r_offset;
|
||
srel -= 2; /* Branch instructions add 2 to the PC... */
|
||
srel -= (input_section->output_section->vma +
|
||
input_section->output_offset);
|
||
|
||
if (srel & 1)
|
||
return bfd_reloc_outofrange;
|
||
if (srel > ((1 << 8) - 1) || (srel < - (1 << 8)))
|
||
return bfd_reloc_overflow;
|
||
|
||
bfd_put_8 (input_bfd, srel >> 1, contents);
|
||
break;
|
||
|
||
case R_FR30_12_PCREL:
|
||
contents += rel->r_offset;
|
||
srel = (bfd_signed_vma) relocation;
|
||
srel += rel->r_addend;
|
||
srel -= rel->r_offset;
|
||
srel -= 2; /* Branch instructions add 2 to the PC... */
|
||
srel -= (input_section->output_section->vma +
|
||
input_section->output_offset);
|
||
|
||
if (srel & 1)
|
||
return bfd_reloc_outofrange;
|
||
if (srel > ((1 << 11) - 1) || (srel < - (1 << 11)))
|
||
return bfd_reloc_overflow;
|
||
|
||
x = bfd_get_16 (input_bfd, contents);
|
||
x = (x & 0xf800) | ((srel >> 1) & 0x7ff);
|
||
bfd_put_16 (input_bfd, x, contents);
|
||
break;
|
||
|
||
default:
|
||
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
||
contents, rel->r_offset,
|
||
relocation, rel->r_addend);
|
||
}
|
||
|
||
return r;
|
||
}
|
||
|
||
/* Relocate an FR30 ELF section.
|
||
|
||
The RELOCATE_SECTION function is called by the new ELF backend linker
|
||
to handle the relocations for a section.
|
||
|
||
The relocs are always passed as Rela structures; if the section
|
||
actually uses Rel structures, the r_addend field will always be
|
||
zero.
|
||
|
||
This function is responsible for adjusting the section contents as
|
||
necessary, and (if using Rela relocs and generating a relocateable
|
||
output file) adjusting the reloc addend as necessary.
|
||
|
||
This function does not have to worry about setting the reloc
|
||
address or the reloc symbol index.
|
||
|
||
LOCAL_SYMS is a pointer to the swapped in local symbols.
|
||
|
||
LOCAL_SECTIONS is an array giving the section in the input file
|
||
corresponding to the st_shndx field of each local symbol.
|
||
|
||
The global hash table entry for the global symbols can be found
|
||
via elf_sym_hashes (input_bfd).
|
||
|
||
When generating relocateable output, this function must handle
|
||
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
|
||
going to be the section symbol corresponding to the output
|
||
section, which means that the addend must be adjusted
|
||
accordingly. */
|
||
|
||
static bfd_boolean
|
||
fr30_elf_relocate_section (output_bfd, info, input_bfd, input_section,
|
||
contents, relocs, local_syms, local_sections)
|
||
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;
|
||
|
||
if (info->relocateable)
|
||
return TRUE;
|
||
|
||
symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (input_bfd);
|
||
relend = relocs + input_section->reloc_count;
|
||
|
||
for (rel = relocs; rel < relend; rel ++)
|
||
{
|
||
reloc_howto_type *howto;
|
||
unsigned long r_symndx;
|
||
Elf_Internal_Sym *sym;
|
||
asection *sec;
|
||
struct elf_link_hash_entry *h;
|
||
bfd_vma relocation;
|
||
bfd_reloc_status_type r;
|
||
const char *name = NULL;
|
||
int r_type;
|
||
|
||
r_type = ELF32_R_TYPE (rel->r_info);
|
||
|
||
if ( r_type == R_FR30_GNU_VTINHERIT
|
||
|| r_type == R_FR30_GNU_VTENTRY)
|
||
continue;
|
||
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
|
||
howto = fr30_elf_howto_table + ELF32_R_TYPE (rel->r_info);
|
||
h = NULL;
|
||
sym = NULL;
|
||
sec = NULL;
|
||
|
||
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);
|
||
|
||
name = bfd_elf_string_from_elf_section
|
||
(input_bfd, symtab_hdr->sh_link, sym->st_name);
|
||
name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
|
||
#if 0
|
||
fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
|
||
sec->name, name, sym->st_name,
|
||
sec->output_section->vma, sec->output_offset,
|
||
sym->st_value, rel->r_addend);
|
||
#endif
|
||
}
|
||
else
|
||
{
|
||
h = sym_hashes [r_symndx - symtab_hdr->sh_info];
|
||
|
||
while (h->root.type == bfd_link_hash_indirect
|
||
|| h->root.type == bfd_link_hash_warning)
|
||
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
||
|
||
name = h->root.root.string;
|
||
|
||
if (h->root.type == bfd_link_hash_defined
|
||
|| h->root.type == bfd_link_hash_defweak)
|
||
{
|
||
sec = h->root.u.def.section;
|
||
relocation = (h->root.u.def.value
|
||
+ sec->output_section->vma
|
||
+ sec->output_offset);
|
||
#if 0
|
||
fprintf (stderr,
|
||
"defined: sec: %s, name: %s, value: %x + %x + %x gives: %x\n",
|
||
sec->name, name, h->root.u.def.value,
|
||
sec->output_section->vma, sec->output_offset, relocation);
|
||
#endif
|
||
}
|
||
else if (h->root.type == bfd_link_hash_undefweak)
|
||
{
|
||
#if 0
|
||
fprintf (stderr, "undefined: sec: %s, name: %s\n",
|
||
sec->name, name);
|
||
#endif
|
||
relocation = 0;
|
||
}
|
||
else
|
||
{
|
||
if (! ((*info->callbacks->undefined_symbol)
|
||
(info, h->root.root.string, input_bfd,
|
||
input_section, rel->r_offset, TRUE)))
|
||
return FALSE;
|
||
#if 0
|
||
fprintf (stderr, "unknown: name: %s\n", name);
|
||
#endif
|
||
relocation = 0;
|
||
}
|
||
}
|
||
|
||
r = fr30_final_link_relocate (howto, input_bfd, input_section,
|
||
contents, rel, relocation);
|
||
|
||
if (r != bfd_reloc_ok)
|
||
{
|
||
const char * msg = (const char *) NULL;
|
||
|
||
switch (r)
|
||
{
|
||
case bfd_reloc_overflow:
|
||
r = info->callbacks->reloc_overflow
|
||
(info, name, howto->name, (bfd_vma) 0,
|
||
input_bfd, input_section, rel->r_offset);
|
||
break;
|
||
|
||
case bfd_reloc_undefined:
|
||
r = info->callbacks->undefined_symbol
|
||
(info, name, input_bfd, input_section, rel->r_offset,
|
||
TRUE);
|
||
break;
|
||
|
||
case bfd_reloc_outofrange:
|
||
msg = _("internal error: out of range error");
|
||
break;
|
||
|
||
case bfd_reloc_notsupported:
|
||
msg = _("internal error: unsupported relocation error");
|
||
break;
|
||
|
||
case bfd_reloc_dangerous:
|
||
msg = _("internal error: dangerous relocation");
|
||
break;
|
||
|
||
default:
|
||
msg = _("internal error: unknown error");
|
||
break;
|
||
}
|
||
|
||
if (msg)
|
||
r = info->callbacks->warning
|
||
(info, msg, name, input_bfd, input_section, rel->r_offset);
|
||
|
||
if (! r)
|
||
return FALSE;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Return the section that should be marked against GC for a given
|
||
relocation. */
|
||
|
||
static asection *
|
||
fr30_elf_gc_mark_hook (sec, info, rel, h, sym)
|
||
asection *sec;
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
||
Elf_Internal_Rela *rel;
|
||
struct elf_link_hash_entry *h;
|
||
Elf_Internal_Sym * sym;
|
||
{
|
||
if (h != NULL)
|
||
{
|
||
switch (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
case R_FR30_GNU_VTINHERIT:
|
||
case R_FR30_GNU_VTENTRY:
|
||
break;
|
||
|
||
default:
|
||
switch (h->root.type)
|
||
{
|
||
case bfd_link_hash_defined:
|
||
case bfd_link_hash_defweak:
|
||
return h->root.u.def.section;
|
||
|
||
case bfd_link_hash_common:
|
||
return h->root.u.c.p->section;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Update the got entry reference counts for the section being removed. */
|
||
|
||
static bfd_boolean
|
||
fr30_elf_gc_sweep_hook (abfd, info, sec, relocs)
|
||
bfd *abfd ATTRIBUTE_UNUSED;
|
||
struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
||
asection *sec ATTRIBUTE_UNUSED;
|
||
const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
|
||
{
|
||
return TRUE;
|
||
}
|
||
|
||
/* Look through the relocs for a section during the first phase.
|
||
Since we don't do .gots or .plts, we just need to consider the
|
||
virtual table relocs for gc. */
|
||
|
||
static bfd_boolean
|
||
fr30_elf_check_relocs (abfd, info, sec, relocs)
|
||
bfd *abfd;
|
||
struct bfd_link_info *info;
|
||
asection *sec;
|
||
const Elf_Internal_Rela *relocs;
|
||
{
|
||
Elf_Internal_Shdr *symtab_hdr;
|
||
struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
|
||
const Elf_Internal_Rela *rel;
|
||
const Elf_Internal_Rela *rel_end;
|
||
|
||
if (info->relocateable)
|
||
return TRUE;
|
||
|
||
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
|
||
if (!elf_bad_symtab (abfd))
|
||
sym_hashes_end -= symtab_hdr->sh_info;
|
||
|
||
rel_end = relocs + sec->reloc_count;
|
||
for (rel = relocs; rel < rel_end; rel++)
|
||
{
|
||
struct elf_link_hash_entry *h;
|
||
unsigned long r_symndx;
|
||
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
h = NULL;
|
||
else
|
||
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
||
|
||
switch (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
/* This relocation describes the C++ object vtable hierarchy.
|
||
Reconstruct it for later use during GC. */
|
||
case R_FR30_GNU_VTINHERIT:
|
||
if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
||
return FALSE;
|
||
break;
|
||
|
||
/* This relocation describes which C++ vtable entries are actually
|
||
used. Record for later use during GC. */
|
||
case R_FR30_GNU_VTENTRY:
|
||
if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
||
return FALSE;
|
||
break;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
#define ELF_ARCH bfd_arch_fr30
|
||
#define ELF_MACHINE_CODE EM_FR30
|
||
#define ELF_MACHINE_ALT1 EM_CYGNUS_FR30
|
||
#define ELF_MAXPAGESIZE 0x1000
|
||
|
||
#define TARGET_BIG_SYM bfd_elf32_fr30_vec
|
||
#define TARGET_BIG_NAME "elf32-fr30"
|
||
|
||
#define elf_info_to_howto_rel NULL
|
||
#define elf_info_to_howto fr30_info_to_howto_rela
|
||
#define elf_backend_relocate_section fr30_elf_relocate_section
|
||
#define elf_backend_gc_mark_hook fr30_elf_gc_mark_hook
|
||
#define elf_backend_gc_sweep_hook fr30_elf_gc_sweep_hook
|
||
#define elf_backend_check_relocs fr30_elf_check_relocs
|
||
|
||
#define elf_backend_can_gc_sections 1
|
||
#define elf_backend_rela_normal 1
|
||
|
||
#define bfd_elf32_bfd_reloc_type_lookup fr30_reloc_type_lookup
|
||
|
||
#include "elf32-target.h"
|