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binutils-gdb/bfd/elf32-v850.c
Nick Clifton 0a5875fc63 Fix HI16 and HI16_S relocations for PR14258
1997-12-06 00:57:20 +00:00

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/* V850-specific support for 32-bit ELF
Copyright (C) 1996, 1997 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. */
/* XXX FIXME: This code is littered with 32bit int, 16bit short, 8bit char
dependencies. As is the gas & simulator code or the v850. */
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/v850.h"
/* sign-extend a 24-bit number */
#define SEXT24(x) ((((x) & 0xffffff) ^ (~ 0x7fffff)) + 0x800000)
static reloc_howto_type *v850_elf_reloc_type_lookup
PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
static void v850_elf_info_to_howto_rel
PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
static bfd_reloc_status_type v850_elf_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static boolean v850_elf_is_local_label_name PARAMS ((bfd *, const char *));
static boolean v850_elf_relocate_section PARAMS((bfd *,
struct bfd_link_info *,
bfd *,
asection *,
bfd_byte *,
Elf_Internal_Rela *,
Elf_Internal_Sym *,
asection **));
/* Try to minimize the amount of space occupied by relocation tables
on the ROM (not that the ROM won't be swamped by other ELF overhead). */
#define USE_REL
/* Note: It is REQUIRED that the 'type' value of each entry in this array
match the index of the entry in the array. */
static reloc_howto_type v850_elf_howto_table[] =
{
/* This reloc does nothing. */
HOWTO (R_V850_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_V850_NONE", /* name */
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false), /* pcrel_offset */
/* A PC relative 9 bit branch. */
HOWTO (R_V850_9_PCREL, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
true, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_9_PCREL", /* name */
false, /* partial_inplace */
0x00ffffff, /* src_mask */
0x00ffffff, /* dst_mask */
true), /* pcrel_offset */
/* A PC relative 22 bit branch. */
HOWTO (R_V850_22_PCREL, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
22, /* bitsize */
true, /* pc_relative */
7, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_22_PCREL", /* name */
false, /* partial_inplace */
0x07ffff80, /* src_mask */
0x07ffff80, /* dst_mask */
true), /* pcrel_offset */
/* High 16 bits of symbol value. */
HOWTO (R_V850_HI16_S, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_HI16_S", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* High 16 bits of symbol value. */
HOWTO (R_V850_HI16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_HI16", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* Low 16 bits of symbol value. */
HOWTO (R_V850_LO16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_LO16", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* Simple 32bit reloc. */
HOWTO (R_V850_32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_32", /* name */
true, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
/* Simple 16bit reloc. */
HOWTO (R_V850_16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_V850_16", /* name */
true, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* Simple 8bit reloc. */
HOWTO (R_V850_8, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_V850_8", /* name */
true, /* partial_inplace */
0xff, /* src_mask */
0xff, /* dst_mask */
false), /* pcrel_offset */
/* 16 bit offset from the short data area pointer. */
HOWTO (R_V850_SDA_16_16_OFFSET, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_SDA_16_16_OFFSET", /* name */
false, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* 15 bit offset from the short data area pointer. */
HOWTO (R_V850_SDA_15_16_OFFSET, /* type */
1, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
1, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_SDA_15_16_OFFSET", /* name */
false, /* partial_inplace */
0xfffe, /* src_mask */
0xfffe, /* dst_mask */
false), /* pcrel_offset */
/* 16 bit offset from the zero data area pointer. */
HOWTO (R_V850_ZDA_16_16_OFFSET, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_ZDA_16_16_OFFSET", /* name */
false, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* 15 bit offset from the zero data area pointer. */
HOWTO (R_V850_ZDA_15_16_OFFSET, /* type */
1, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
1, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_ZDA_15_16_OFFSET", /* name */
false, /* partial_inplace */
0xfffe, /* src_mask */
0xfffe, /* dst_mask */
false), /* pcrel_offset */
/* 6 bit offset from the tiny data area pointer. */
HOWTO (R_V850_TDA_6_8_OFFSET, /* type */
2, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
false, /* pc_relative */
1, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_TDA_6_8_OFFSET", /* name */
false, /* partial_inplace */
0x7e, /* src_mask */
0x7e, /* dst_mask */
false), /* pcrel_offset */
/* 8 bit offset from the tiny data area pointer. */
HOWTO (R_V850_TDA_7_8_OFFSET, /* type */
1, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_TDA_7_8_OFFSET", /* name */
false, /* partial_inplace */
0x7f, /* src_mask */
0x7f, /* dst_mask */
false), /* pcrel_offset */
/* 7 bit offset from the tiny data area pointer. */
HOWTO (R_V850_TDA_7_7_OFFSET, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
7, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_TDA_7_7_OFFSET", /* name */
false, /* partial_inplace */
0x7f, /* src_mask */
0x7f, /* dst_mask */
false), /* pcrel_offset */
/* 16 bit offset from the tiny data area pointer! */
HOWTO (R_V850_TDA_16_16_OFFSET, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_TDA_16_16_OFFSET", /* name */
false, /* partial_inplace */
0xffff, /* src_mask */
0xfff, /* dst_mask */
false), /* pcrel_offset */
/* start-sanitize-v850e */
/* 5 bit offset from the tiny data area pointer. */
HOWTO (R_V850_TDA_4_5_OFFSET, /* type */
1, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
5, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_TDA_4_5_OFFSET", /* name */
false, /* partial_inplace */
0x0f, /* src_mask */
0x0f, /* dst_mask */
false), /* pcrel_offset */
/* 4 bit offset from the tiny data area pointer. */
HOWTO (R_V850_TDA_4_4_OFFSET, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
4, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_TDA_4_4_OFFSET", /* name */
false, /* partial_inplace */
0x0f, /* src_mask */
0x0f, /* dst_mask */
false), /* pcrel_offset */
/* 16 bit offset from the short data area pointer. */
HOWTO (R_V850_SDA_16_16_SPLIT_OFFSET, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_SDA_16_16_SPLIT_OFFSET",/* name */
false, /* partial_inplace */
0xfffe0020, /* src_mask */
0xfffe0020, /* dst_mask */
false), /* pcrel_offset */
/* 16 bit offset from the zero data area pointer. */
HOWTO (R_V850_ZDA_16_16_SPLIT_OFFSET, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_ZDA_16_16_SPLIT_OFFSET",/* name */
false, /* partial_inplace */
0xfffe0020, /* src_mask */
0xfffe0020, /* dst_mask */
false), /* pcrel_offset */
/* 6 bit offset from the call table base pointer. */
HOWTO (R_V850_CALLT_6_7_OFFSET, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
7, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_CALLT_6_7_OFFSET", /* name */
false, /* partial_inplace */
0x3f, /* src_mask */
0x3f, /* dst_mask */
false), /* pcrel_offset */
/* 16 bit offset from the call table base pointer. */
HOWTO (R_V850_CALLT_16_16_OFFSET, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_CALLT_16_16_OFFSET", /* name */
false, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* end-sanitize-v850e */
};
/* Map BFD reloc types to V850 ELF reloc types. */
struct v850_elf_reloc_map
{
unsigned char bfd_reloc_val;
unsigned char elf_reloc_val;
};
static const struct v850_elf_reloc_map v850_elf_reloc_map[] =
{
{ BFD_RELOC_NONE, R_V850_NONE },
{ BFD_RELOC_V850_9_PCREL, R_V850_9_PCREL },
{ BFD_RELOC_V850_22_PCREL, R_V850_22_PCREL },
{ BFD_RELOC_HI16_S, R_V850_HI16_S },
{ BFD_RELOC_HI16, R_V850_HI16 },
{ BFD_RELOC_LO16, R_V850_LO16 },
{ BFD_RELOC_32, R_V850_32 },
{ BFD_RELOC_16, R_V850_16 },
{ BFD_RELOC_8, R_V850_8 },
{ BFD_RELOC_V850_SDA_16_16_OFFSET, R_V850_SDA_16_16_OFFSET },
{ BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET },
{ BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET },
{ BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET },
{ BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET },
{ BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET },
{ BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET },
{ BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET },
/* start-sanitize-v850e */
{ BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET },
{ BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET },
{ BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET },
{ BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET },
{ BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET },
{ BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET },
/* end-sanitize-v850e */
};
/* Map a bfd relocation into the appropriate howto structure */
static reloc_howto_type *
v850_elf_reloc_type_lookup (abfd, code)
bfd * abfd;
bfd_reloc_code_real_type code;
{
unsigned int i;
for (i = 0;
i < sizeof (v850_elf_reloc_map) / sizeof (struct v850_elf_reloc_map);
i++)
{
if (v850_elf_reloc_map[i].bfd_reloc_val == code)
{
BFD_ASSERT (v850_elf_howto_table[v850_elf_reloc_map[i].elf_reloc_val].type == v850_elf_reloc_map[i].elf_reloc_val);
return & v850_elf_howto_table[v850_elf_reloc_map[i].elf_reloc_val];
}
}
return NULL;
}
/* Set the howto pointer for an V850 ELF reloc. */
static void
v850_elf_info_to_howto_rel (abfd, cache_ptr, dst)
bfd * abfd;
arelent * cache_ptr;
Elf32_Internal_Rel * dst;
{
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
BFD_ASSERT (r_type < (unsigned int) R_V850_max);
cache_ptr->howto = &v850_elf_howto_table[r_type];
}
/* Look through the relocs for a section during the first phase, and
allocate space in the global offset table or procedure linkage
table. */
static boolean
v850_elf_check_relocs (abfd, info, sec, relocs)
bfd * abfd;
struct bfd_link_info * info;
asection * sec;
const Elf_Internal_Rela * relocs;
{
boolean ret = true;
bfd *dynobj;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
asection *sreloc;
enum v850_reloc_type r_type;
int other = 0;
const char *common = (const char *)0;
if (info->relocateable)
return true;
#ifdef DEBUG
fprintf (stderr, "v850_elf_check_relocs called for section %s in %s\n",
bfd_get_section_name (abfd, sec),
bfd_get_filename (abfd));
#endif
dynobj = elf_hash_table (info)->dynobj;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
sreloc = NULL;
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
{
unsigned long r_symndx;
struct elf_link_hash_entry *h;
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];
r_type = (enum v850_reloc_type) ELF32_R_TYPE (rel->r_info);
switch (r_type)
{
default:
case R_V850_NONE:
case R_V850_9_PCREL:
case R_V850_22_PCREL:
case R_V850_HI16_S:
case R_V850_HI16:
case R_V850_LO16:
case R_V850_32:
case R_V850_16:
case R_V850_8:
/* start-sanitize-v850e */
case R_V850_CALLT_6_7_OFFSET:
case R_V850_CALLT_16_16_OFFSET:
/* end-sanitize-v850e */
break;
/* start-sanitize-v850e */
case R_V850_SDA_16_16_SPLIT_OFFSET:
/* end-sanitize-v850e */
case R_V850_SDA_16_16_OFFSET:
case R_V850_SDA_15_16_OFFSET:
other = V850_OTHER_SDA;
common = ".scommon";
goto small_data_common;
/* start-sanitize-v850e */
case R_V850_ZDA_16_16_SPLIT_OFFSET:
/* end-sanitize-v850e */
case R_V850_ZDA_16_16_OFFSET:
case R_V850_ZDA_15_16_OFFSET:
other = V850_OTHER_ZDA;
common = ".zcommon";
goto small_data_common;
/* start-sanitize-v850e */
case R_V850_TDA_4_5_OFFSET:
case R_V850_TDA_4_4_OFFSET:
/* end-sanitize-v850e */
case R_V850_TDA_6_8_OFFSET:
case R_V850_TDA_7_8_OFFSET:
case R_V850_TDA_7_7_OFFSET:
case R_V850_TDA_16_16_OFFSET:
other = V850_OTHER_TDA;
common = ".tcommon";
/* fall through */
#define V850_OTHER_MASK (V850_OTHER_TDA | V850_OTHER_SDA | V850_OTHER_ZDA)
small_data_common:
if (h)
{
h->other |= other; /* flag which type of relocation was used */
if ((h->other & V850_OTHER_MASK) != (other & V850_OTHER_MASK)
&& (h->other & V850_OTHER_ERROR) == 0)
{
const char * msg;
static char buff[100]; /* XXX */
switch (h->other & V850_OTHER_MASK)
{
default:
msg = "cannot occupy in multiple small data regions";
break;
case V850_OTHER_SDA | V850_OTHER_ZDA | V850_OTHER_TDA:
msg = "can only be in one of the small, zero, and tiny data regions";
break;
case V850_OTHER_SDA | V850_OTHER_ZDA:
msg = "cannot be in both small and zero data regions simultaneously";
break;
case V850_OTHER_SDA | V850_OTHER_TDA:
msg = "cannot be in both small and tiny data regions simultaneously";
break;
case V850_OTHER_ZDA | V850_OTHER_TDA:
msg = "cannot be in both zero and tiny data regions simultaneously";
break;
}
sprintf (buff, "Variable '%s' %s", h->root.root.string, msg );
info->callbacks->warning (info, buff, h->root.root.string,
abfd, h->root.u.def.section, 0);
bfd_set_error (bfd_error_bad_value);
h->other |= V850_OTHER_ERROR;
ret = false;
}
}
if (h && h->root.type == bfd_link_hash_common
&& h->root.u.c.p
&& !strcmp (bfd_get_section_name (abfd, h->root.u.c.p->section), "COMMON"))
{
asection *section = h->root.u.c.p->section = bfd_make_section_old_way (abfd, common);
section->flags |= SEC_IS_COMMON;
}
#ifdef DEBUG
fprintf (stderr, "v850_elf_check_relocs, found %s relocation for %s%s\n",
v850_elf_howto_table[ (int)r_type ].name,
(h && h->root.root.string) ? h->root.root.string : "<unknown>",
(h->root.type == bfd_link_hash_common) ? ", symbol is common" : "");
#endif
break;
}
}
return ret;
}
static bfd_reloc_status_type
v850_elf_store_addend_in_insn (abfd, r_type, addend, address, replace)
bfd * abfd;
int r_type;
long addend;
bfd_byte * address;
boolean replace;
{
unsigned long insn;
switch (r_type)
{
default:
/* fprintf (stderr, "reloc type %d not SUPPORTED\n", r_type ); */
return bfd_reloc_notsupported;
case R_V850_32:
if (! replace)
addend += bfd_get_32 (abfd, address);
bfd_put_32 (abfd, addend, address);
return bfd_reloc_ok;
case R_V850_22_PCREL:
if (addend > 0x1fffff || addend < -0x200000)
return bfd_reloc_overflow;
if ((addend % 2) != 0)
return bfd_reloc_dangerous;
insn = bfd_get_32 (abfd, address);
insn &= ~0xfffe003f;
insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16));
bfd_put_32 (abfd, insn, address);
return bfd_reloc_ok;
case R_V850_9_PCREL:
if (addend > 0xff || addend < -0x100)
return bfd_reloc_overflow;
if ((addend % 2) != 0)
return bfd_reloc_dangerous;
insn = bfd_get_16 (abfd, address);
insn &= ~ 0xf870;
insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3);
break;
case R_V850_HI16_S:
addend += (bfd_get_16 (abfd, address) << 16);
addend = (addend >> 16) + ((addend & 0x8000) != 0);
insn = addend;
break;
case R_V850_HI16:
addend += (bfd_get_16 (abfd, address) << 16);
addend = (addend >> 16);
insn = addend;
break;
case R_V850_LO16:
addend += (short) bfd_get_16 (abfd, address);
/* Do not complain if value has top bit set, as this has been anticipated. */
insn = addend;
break;
case R_V850_16:
replace = false;
/* drop through */
/* start-sanitize-v850e */
case R_V850_CALLT_16_16_OFFSET:
/* end-sanitize-v850e */
case R_V850_SDA_16_16_OFFSET:
case R_V850_ZDA_16_16_OFFSET:
case R_V850_TDA_16_16_OFFSET:
if (! replace)
addend += bfd_get_16 (abfd, address);
if (addend > 0x7fff || addend < -0x8000)
return bfd_reloc_overflow;
insn = addend;
break;
case R_V850_SDA_15_16_OFFSET:
case R_V850_ZDA_15_16_OFFSET:
insn = bfd_get_16 (abfd, address);
if (! replace)
addend += ((insn & 0xfffe) << 1);
if (addend > 0x7ffe || addend < -0x8000)
return bfd_reloc_overflow;
if (addend & 1)
return bfd_reloc_dangerous;
insn &= 1;
insn |= (addend >> 1) & ~1;
break;
case R_V850_TDA_6_8_OFFSET:
insn = bfd_get_16 (abfd, address);
if (! replace)
addend += ((insn & 0x7e) << 1);
if (addend > 0xfc || addend < 0)
return bfd_reloc_overflow;
if (addend & 3)
return bfd_reloc_dangerous;
insn &= 0xff81;
insn |= (addend >> 1);
break;
case R_V850_TDA_7_8_OFFSET:
insn = bfd_get_16 (abfd, address);
if (! replace)
addend += ((insn & 0x7f) << 1);
if (addend > 0xfe || addend < 0)
return bfd_reloc_overflow;
if (addend & 1)
return bfd_reloc_dangerous;
insn &= 0xff80;
insn |= (addend >> 1);
break;
case R_V850_TDA_7_7_OFFSET:
insn = bfd_get_16 (abfd, address);
if (! replace)
addend += insn & 0x7f;
if (addend > 0x7f || addend < 0)
return bfd_reloc_overflow;
insn &= 0xff80;
insn |= addend;
break;
/* start-sanitize-v850e */
case R_V850_TDA_4_5_OFFSET:
insn = bfd_get_16 (abfd, address);
if (! replace)
addend += ((insn & 0xf) << 1);
if (addend > 0x1e || addend < 0)
return bfd_reloc_overflow;
if (addend & 1)
return bfd_reloc_dangerous;
insn &= 0xfff0;
insn |= (addend >> 1);
break;
case R_V850_TDA_4_4_OFFSET:
insn = bfd_get_16 (abfd, address);
if (! replace)
addend += insn & 0xf;
if (addend > 0xf || addend < 0)
return bfd_reloc_overflow;
insn &= 0xfff0;
insn |= addend;
break;
case R_V850_ZDA_16_16_SPLIT_OFFSET:
case R_V850_SDA_16_16_SPLIT_OFFSET:
insn = bfd_get_32 (abfd, address);
if (! replace)
addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5);
if (addend > 0xffff || addend < 0)
return bfd_reloc_overflow;
insn &= 0x0001ffdf;
insn |= (addend & 1) << 5;
insn |= (addend & ~1) << 16;
bfd_put_32 (abfd, insn, address);
return bfd_reloc_ok;
case R_V850_CALLT_6_7_OFFSET:
insn = bfd_get_16 (abfd, address);
if (! replace)
addend += ((insn & 0x3f) << 1);
if (addend > 0x7e || addend < 0)
return bfd_reloc_overflow;
if (addend & 1)
return bfd_reloc_dangerous;
insn &= 0xff80;
insn |= (addend >> 1);
break;
/* end-sanitize-v850e */
}
bfd_put_16 (abfd, insn, address);
return bfd_reloc_ok;
}
/* Insert the addend into the instruction. */
static bfd_reloc_status_type
v850_elf_reloc (abfd, reloc, symbol, data, isection, obfd, err)
bfd * abfd;
arelent * reloc;
asymbol * symbol;
PTR data;
asection * isection;
bfd * obfd;
char ** err;
{
long relocation;
long insn;
/* If there is an output BFD,
and the symbol is not a section name (which is only defined at final link time),
and either we are not putting the addend into the instruction
or the addend is zero, so there is nothing to add into the instruction
then just fixup the address and return. */
if (obfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& (! reloc->howto->partial_inplace
|| reloc->addend == 0))
{
reloc->address += isection->output_offset;
return bfd_reloc_ok;
}
#if 0
else if (obfd != NULL)
{
return bfd_reloc_continue;
}
#endif
/* Catch relocs involving undefined symbols. */
if (bfd_is_und_section (symbol->section)
&& (symbol->flags & BSF_WEAK) == 0
&& obfd == NULL)
return bfd_reloc_undefined;
/* We handle final linking of some relocs ourselves. */
/* Is the address of the relocation really within the section? */
if (reloc->address > isection->_cooked_size)
return bfd_reloc_outofrange;
/* Work out which section the relocation is targetted at and the
initial relocation command value. */
/* Get symbol value. (Common symbols are special.) */
if (bfd_is_com_section (symbol->section))
relocation = 0;
else
relocation = symbol->value;
/* Convert input-section-relative symbol value to absolute + addend. */
relocation += symbol->section->output_section->vma;
relocation += symbol->section->output_offset;
relocation += reloc->addend;
if (reloc->howto->pc_relative == true)
{
/* Here the variable relocation holds the final address of the
symbol we are relocating against, plus any addend. */
relocation -= isection->output_section->vma + isection->output_offset;
/* Deal with pcrel_offset */
relocation -= reloc->address;
}
/* I've got no clue... */
reloc->addend = 0;
return v850_elf_store_addend_in_insn (abfd, reloc->howto->type, relocation,
(bfd_byte *) data + reloc->address, true);
}
/*ARGSUSED*/
static boolean
v850_elf_is_local_label_name (abfd, name)
bfd * abfd;
const char * name;
{
return ( (name[0] == '.' && (name[1] == 'L' || name[1] == '.'))
|| (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_'));
}
/* Perform a relocation as part of a final link. */
static bfd_reloc_status_type
v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
input_section, contents, offset, value,
addend, info, sym_sec, is_local)
reloc_howto_type * howto;
bfd * input_bfd;
bfd * output_bfd;
asection * input_section;
bfd_byte * contents;
bfd_vma offset;
bfd_vma value;
bfd_vma addend;
struct bfd_link_info * info;
asection * sym_sec;
int is_local;
{
unsigned long insn;
unsigned long r_type = howto->type;
bfd_byte * hit_data = contents + offset;
switch (r_type)
{
case R_V850_9_PCREL:
value -= (input_section->output_section->vma
+ input_section->output_offset);
value -= offset;
if ((long)value > 0xff || (long)value < -0x100)
return bfd_reloc_overflow;
if ((value % 2) != 0)
return bfd_reloc_dangerous;
insn = bfd_get_16 (input_bfd, hit_data);
insn &= 0x078f;
insn |= ((value & 0x1f0) << 7) | ((value & 0x0e) << 3);
bfd_put_16 (input_bfd, insn, hit_data);
return bfd_reloc_ok;
case R_V850_22_PCREL:
value -= (input_section->output_section->vma
+ input_section->output_offset
+ offset);
value = SEXT24 (value); /* Only the bottom 24 bits of the PC are valid */
if ((long)value > 0x1fffff || (long)value < -0x200000)
return bfd_reloc_overflow;
if ((value % 2) != 0)
return bfd_reloc_dangerous;
insn = bfd_get_32 (input_bfd, hit_data);
insn &= 0x1ffc0;
insn |= (((value & 0xfffe) << 16) | ((value & 0x3f0000) >> 16));
bfd_put_32 (input_bfd, insn, hit_data);
return bfd_reloc_ok;
case R_V850_HI16_S:
value += (bfd_get_16 (input_bfd, hit_data) << 16);
value = (value >> 16) + ((value & 0x8000) != 0);
if ((long)value > 0x7fff || (long)value < -0x8000)
{
/* This relocation cannot overflow. */
value = 0;
}
bfd_put_16 (input_bfd, value, hit_data);
return bfd_reloc_ok;
case R_V850_HI16:
value += (bfd_get_16 (input_bfd, hit_data) << 16);
value >>= 16;
bfd_put_16 (input_bfd, value, hit_data);
return bfd_reloc_ok;
case R_V850_LO16:
value += (short)bfd_get_16 (input_bfd, hit_data);
value &= 0xffff;
bfd_put_16 (input_bfd, value, hit_data);
return bfd_reloc_ok;
case R_V850_16:
value += (short) bfd_get_16 (input_bfd, hit_data);
if ((long) value > 0x7fff || (long) value < -0x8000)
return bfd_reloc_overflow;
bfd_put_16 (input_bfd, value, hit_data);
return bfd_reloc_ok;
case R_V850_ZDA_16_16_OFFSET:
if (sym_sec == NULL)
return bfd_reloc_undefined;
value -= sym_sec->output_section->vma;
value += (short) bfd_get_16 (input_bfd, hit_data);
if ((long) value > 0x7fff || (long) value < -0x8000)
return bfd_reloc_overflow;
bfd_put_16 (input_bfd, value, hit_data);
return bfd_reloc_ok;
case R_V850_ZDA_15_16_OFFSET:
if (sym_sec == NULL)
return bfd_reloc_undefined;
insn = bfd_get_16 (input_bfd, hit_data);
value -= sym_sec->output_section->vma;
value += ((insn & 0xfffe) << 1);
if ((long) value > 0x7ffe || (long) value < -0x8000)
return bfd_reloc_overflow;
value &= ~1;
value |= (insn & 1);
bfd_put_16 (input_bfd, value, hit_data);
return bfd_reloc_ok;
case R_V850_32:
value += bfd_get_32 (input_bfd, hit_data);
bfd_put_32 (input_bfd, value, hit_data);
return bfd_reloc_ok;
case R_V850_8:
value += (char)bfd_get_8 (input_bfd, hit_data);
if ((long)value > 0x7f || (long)value < -0x80)
return bfd_reloc_overflow;
bfd_put_8 (input_bfd, value, hit_data);
return bfd_reloc_ok;
case R_V850_SDA_16_16_OFFSET:
if (sym_sec == NULL)
return bfd_reloc_undefined;
{
unsigned long gp;
struct bfd_link_hash_entry * h;
/* Get the value of __gp. */
h = bfd_link_hash_lookup (info->hash, "__gp", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
|| h->type != bfd_link_hash_defined)
return bfd_reloc_other;
gp = (h->u.def.value
+ h->u.def.section->output_section->vma
+ h->u.def.section->output_offset);
value -= sym_sec->output_section->vma;
value -= (gp - sym_sec->output_section->vma);
value += (short) bfd_get_16 (input_bfd, hit_data);
if ((long)value > 0x7fff || (long)value < -0x8000)
return bfd_reloc_overflow;
bfd_put_16 (input_bfd, value, hit_data);
return bfd_reloc_ok;
}
case R_V850_SDA_15_16_OFFSET:
if (sym_sec == NULL)
return bfd_reloc_undefined;
{
unsigned long gp;
struct bfd_link_hash_entry * h;
/* Get the value of __gp. */
h = bfd_link_hash_lookup (info->hash, "__gp", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
|| h->type != bfd_link_hash_defined)
return bfd_reloc_other;
gp = (h->u.def.value
+ h->u.def.section->output_section->vma
+ h->u.def.section->output_offset);
value -= sym_sec->output_section->vma;
value -= (gp - sym_sec->output_section->vma);
insn = bfd_get_16 (input_bfd, hit_data);
value += ((insn & 0xfffe) << 1);
if ((long)value > 0x7ffe || (long)value < -0x8000)
return bfd_reloc_overflow;
value &= ~1;
value |= (insn & 1);
bfd_put_16 (input_bfd, value, hit_data);
return bfd_reloc_ok;
}
case R_V850_TDA_6_8_OFFSET:
{
unsigned long ep;
struct bfd_link_hash_entry * h;
insn = bfd_get_16 (input_bfd, hit_data);
/* Get the value of __ep. */
h = bfd_link_hash_lookup (info->hash, "__ep", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
|| h->type != bfd_link_hash_defined)
return bfd_reloc_continue; /* Actually this indicates that __ep could not be found. */
ep = (h->u.def.value
+ h->u.def.section->output_section->vma
+ h->u.def.section->output_offset);
value -= ep;
value += ((insn & 0x7e) << 1);
if ((long) value > 0xfc || (long) value < 0)
return bfd_reloc_overflow;
if ((value % 2) != 0)
return bfd_reloc_dangerous;
insn &= 0xff81;
insn |= (value >> 1);
bfd_put_16 (input_bfd, insn, hit_data);
return bfd_reloc_ok;
}
case R_V850_TDA_7_8_OFFSET:
{
unsigned long ep;
struct bfd_link_hash_entry * h;
insn = bfd_get_16 (input_bfd, hit_data);
/* Get the value of __ep. */
h = bfd_link_hash_lookup (info->hash, "__ep", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
|| h->type != bfd_link_hash_defined)
return bfd_reloc_continue; /* Actually this indicates that __ep could not be found. */
ep = (h->u.def.value
+ h->u.def.section->output_section->vma
+ h->u.def.section->output_offset);
value -= ep;
value += ((insn & 0x7f) << 1);
if ((long) value > 0xfe || (long) value < 0)
return bfd_reloc_overflow;
insn &= 0xff80;
insn |= (value >> 1);
bfd_put_16 (input_bfd, insn, hit_data);
return bfd_reloc_ok;
}
case R_V850_TDA_7_7_OFFSET:
{
unsigned long ep;
struct bfd_link_hash_entry * h;
insn = bfd_get_16 (input_bfd, hit_data);
/* Get the value of __ep. */
h = bfd_link_hash_lookup (info->hash, "__ep", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
|| h->type != bfd_link_hash_defined)
return bfd_reloc_continue; /* Actually this indicates that __ep could not be found. */
ep = (h->u.def.value
+ h->u.def.section->output_section->vma
+ h->u.def.section->output_offset);
value -= ep;
value += insn & 0x7f;
if ((long) value > 0x7f || (long) value < 0)
return bfd_reloc_overflow;
insn &= 0xff80;
insn |= value;
bfd_put_16 (input_bfd, insn, hit_data);
return bfd_reloc_ok;
}
case R_V850_TDA_16_16_OFFSET:
{
unsigned long ep;
struct bfd_link_hash_entry * h;
/* Get the value of __ep. */
h = bfd_link_hash_lookup (info->hash, "__ep", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
|| h->type != bfd_link_hash_defined)
return bfd_reloc_other;
ep = (h->u.def.value
+ h->u.def.section->output_section->vma
+ h->u.def.section->output_offset);
value -= ep;
value += (short) bfd_get_16 (input_bfd, hit_data);
if ((long)value > 0x7fff || (long)value < -0x8000)
return bfd_reloc_overflow;
bfd_put_16 (input_bfd, value, hit_data);
return bfd_reloc_ok;
}
/* start-sanitize-v850e */
case R_V850_TDA_4_5_OFFSET:
{
unsigned long ep;
struct bfd_link_hash_entry * h;
/* Get the value of __ep. */
h = bfd_link_hash_lookup (info->hash, "__ep", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
|| h->type != bfd_link_hash_defined)
return bfd_reloc_continue; /* Actually this indicates that __ep could not be found. */
ep = (h->u.def.value
+ h->u.def.section->output_section->vma
+ h->u.def.section->output_offset);
value -= ep;
insn = bfd_get_16 (input_bfd, hit_data);
value += ((insn & 0xf) << 1);
if ((long) value > 0x1e || (long) value < 0)
return bfd_reloc_overflow;
insn &= 0xfff0;
insn |= (value >> 1);
bfd_put_16 (input_bfd, insn, hit_data);
return bfd_reloc_ok;
}
case R_V850_TDA_4_4_OFFSET:
{
unsigned long ep;
struct bfd_link_hash_entry * h;
/* Get the value of __ep. */
h = bfd_link_hash_lookup (info->hash, "__ep", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
|| h->type != bfd_link_hash_defined)
return bfd_reloc_continue; /* Actually this indicates that __ep could not be found. */
ep = (h->u.def.value
+ h->u.def.section->output_section->vma
+ h->u.def.section->output_offset);
value -= ep;
insn = bfd_get_16 (input_bfd, hit_data);
value += insn & 0xf;
if ((long) value > 0xf || (long) value < 0)
return bfd_reloc_overflow;
insn &= 0xfff0;
insn |= value;
bfd_put_16 (input_bfd, insn, hit_data);
return bfd_reloc_ok;
}
case R_V850_SDA_16_16_SPLIT_OFFSET:
if (sym_sec == NULL)
return bfd_reloc_undefined;
{
unsigned long gp;
struct bfd_link_hash_entry * h;
/* Get the value of __gp. */
h = bfd_link_hash_lookup (info->hash, "__gp", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
|| h->type != bfd_link_hash_defined)
return bfd_reloc_other;
gp = (h->u.def.value
+ h->u.def.section->output_section->vma
+ h->u.def.section->output_offset);
value -= sym_sec->output_section->vma;
value -= (gp - sym_sec->output_section->vma);
insn = bfd_get_32 (input_bfd, hit_data);
value += ((insn & 0xfffe0000) >> 16);
value += ((insn & 0x20) >> 5);
if ((long)value > 0x7fff || (long)value < -0x8000)
return bfd_reloc_overflow;
insn &= 0x0001ffdf;
insn |= (value & 1) << 5;
insn |= (value & ~1) << 16;
bfd_put_32 (input_bfd, insn, hit_data);
return bfd_reloc_ok;
}
case R_V850_ZDA_16_16_SPLIT_OFFSET:
if (sym_sec == NULL)
return bfd_reloc_undefined;
insn = bfd_get_32 (input_bfd, hit_data);
value -= sym_sec->output_section->vma;
value += ((insn & 0xfffe0000) >> 16);
value += ((insn & 0x20) >> 5);
if ((long)value > 0x7fff || (long)value < -0x8000)
return bfd_reloc_overflow;
insn &= 0x0001ffdf;
insn |= (value & 1) << 5;
insn |= (value & ~1) << 16;
bfd_put_32 (input_bfd, insn, hit_data);
return bfd_reloc_ok;
case R_V850_CALLT_6_7_OFFSET:
{
unsigned long ctbp;
struct bfd_link_hash_entry * h;
/* Get the value of __ctbp. */
h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
|| h->type != bfd_link_hash_defined)
return (bfd_reloc_dangerous + 1); /* Actually this indicates that __ctbp could not be found. */
ctbp = (h->u.def.value
+ h->u.def.section->output_section->vma
+ h->u.def.section->output_offset);
value -= ctbp;
insn = bfd_get_16 (input_bfd, hit_data);
value += ((insn & 0x3f) << 1);
if ((long) value > 0x7e || (long) value < 0)
return bfd_reloc_overflow;
insn &= 0xff80;
insn |= (value >> 1);
bfd_put_16 (input_bfd, insn, hit_data);
return bfd_reloc_ok;
}
case R_V850_CALLT_16_16_OFFSET:
if (sym_sec == NULL)
return bfd_reloc_undefined;
{
unsigned long ctbp;
struct bfd_link_hash_entry * h;
/* Get the value of __ctbp. */
h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
|| h->type != bfd_link_hash_defined)
return (bfd_reloc_dangerous + 1);
ctbp = (h->u.def.value
+ h->u.def.section->output_section->vma
+ h->u.def.section->output_offset);
value -= sym_sec->output_section->vma;
value -= (ctbp - sym_sec->output_section->vma);
value += (short) bfd_get_16 (input_bfd, hit_data);
if ((long) value > 0xffff || (long) value < 0)
return bfd_reloc_overflow;
bfd_put_16 (input_bfd, value, hit_data);
return bfd_reloc_ok;
}
/* end-sanitize-v850e */
case R_V850_NONE:
return bfd_reloc_ok;
default:
return bfd_reloc_notsupported;
}
}
/* Relocate an V850 ELF section. */
static boolean
v850_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;
symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
rel = relocs;
relend = relocs + input_section->reloc_count;
for (; rel < relend; rel++)
{
int r_type;
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;
r_symndx = ELF32_R_SYM (rel->r_info);
r_type = ELF32_R_TYPE (rel->r_info);
howto = v850_elf_howto_table + r_type;
if (info->relocateable)
{
/* This is a relocateable link. We don't have to change
anything, unless the reloc is against a section symbol,
in which case we have to adjust according to where the
section symbol winds up in the output section. */
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
{
sec = local_sections[r_symndx];
#ifdef USE_REL
/* The Elf_Internal_Rel structure does not have space for the
modified addend value, so we store it in the instruction
instead. */
if (sec->output_offset + sym->st_value != 0)
{
if (v850_elf_store_addend_in_insn (input_bfd, r_type,
sec->output_offset +
sym->st_value,
contents + rel->r_offset,
false)
!= bfd_reloc_ok)
{
info->callbacks->warning
(info,
"Unable to handle relocation during incremental link",
NULL, input_bfd, input_section, rel->r_offset);
}
}
#else
rel->r_addend += sec->output_offset + sym->st_value;
#endif
}
}
continue;
}
/* This is a final link. */
h = NULL;
sym = NULL;
sec = NULL;
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
relocation = (sec->output_section->vma
+ sec->output_offset
+ sym->st_value);
#if 0
{
char * name;
name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link, sym->st_name);
name = (name == NULL) ? "<none>" : name;
fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x rel %x\n", sec->name, name, sym->st_name,
sec->output_section->vma, sec->output_offset, sym->st_value, rel->r_addend, rel);
}
#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;
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, h->root.root.string, 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, h->root.root.string);
#endif
relocation = 0;
}
else
{
if (! ((*info->callbacks->undefined_symbol)
(info, h->root.root.string, input_bfd,
input_section, rel->r_offset)))
return false;
#if 0
fprintf (stderr, "unknown: name: %s\n", h->root.root.string);
#endif
relocation = 0;
}
}
/* FIXME: We should use the addend, but the COFF relocations
don't. */
r = v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
input_section,
contents, rel->r_offset,
relocation, rel->r_addend,
info, sec, h == NULL);
if (r != bfd_reloc_ok)
{
const char * name;
const char * msg = (const char *)0;
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 || *name == '\0')
name = bfd_section_name (input_bfd, sec);
}
switch (r)
{
case bfd_reloc_overflow:
if (! ((*info->callbacks->reloc_overflow)
(info, 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)))
return false;
break;
case bfd_reloc_outofrange:
msg = "internal error: out of range error";
goto common_error;
case bfd_reloc_notsupported:
msg = "internal error: unsupported relocation error";
goto common_error;
case bfd_reloc_dangerous:
msg = "internal error: dangerous relocation";
goto common_error;
case bfd_reloc_other:
msg = "could not locate special linker symbol __gp";
goto common_error;
case bfd_reloc_continue:
msg = "could not locate special linker symbol __ep";
goto common_error;
case (bfd_reloc_dangerous + 1):
msg = "could not locate special linker symbol __ctbp";
goto common_error;
default:
msg = "internal error: unknown error";
/* fall through */
common_error:
if (!((*info->callbacks->warning)
(info, msg, name, input_bfd, input_section,
rel->r_offset)))
return false;
break;
}
}
}
return true;
}
/* Set the right machine number. */
static boolean
v850_elf_object_p (abfd)
bfd *abfd;
{
switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
{
default:
case E_V850_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_v850, 0); break;
/* start-sanitize-v850e */
case E_V850E_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850e); break;
case E_V850EQ_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_v850, bfd_mach_v850eq); break;
/* end-sanitize-v850e */
}
}
/* Store the machine number in the flags field. */
void
v850_elf_final_write_processing (abfd, linker)
bfd * abfd;
boolean linker;
{
unsigned long val;
switch (bfd_get_mach (abfd))
{
default:
case 0: val = E_V850_ARCH; break;
/* start-sanitize-v850e */
case bfd_mach_v850e: val = E_V850E_ARCH; break;
case bfd_mach_v850eq: val = E_V850EQ_ARCH; break;
/* end-sanitize-v850e */
}
elf_elfheader (abfd)->e_flags &=~ EF_V850_ARCH;
elf_elfheader (abfd)->e_flags |= val;
}
/* Function to keep V850 specific file flags. */
boolean
v850_elf_set_private_flags (abfd, flags)
bfd * abfd;
flagword flags;
{
BFD_ASSERT (!elf_flags_init (abfd)
|| elf_elfheader (abfd)->e_flags == flags);
elf_elfheader (abfd)->e_flags = flags;
elf_flags_init (abfd) = true;
return true;
}
/* Copy backend specific data from one object module to another */
boolean
v850_elf_copy_private_bfd_data (ibfd, obfd)
bfd * ibfd;
bfd * obfd;
{
if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
return true;
BFD_ASSERT (!elf_flags_init (obfd)
|| (elf_elfheader (obfd)->e_flags
== elf_elfheader (ibfd)->e_flags));
elf_gp (obfd) = elf_gp (ibfd);
elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
elf_flags_init (obfd) = true;
return true;
}
/* Merge backend specific data from an object file to the output
object file when linking. */
boolean
v850_elf_merge_private_bfd_data (ibfd, obfd)
bfd * ibfd;
bfd * obfd;
{
flagword old_flags;
flagword new_flags;
if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
return true;
new_flags = elf_elfheader (ibfd)->e_flags;
old_flags = elf_elfheader (obfd)->e_flags;
if (! elf_flags_init (obfd))
{
elf_flags_init (obfd) = true;
elf_elfheader (obfd)->e_flags = new_flags;
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
&& bfd_get_arch_info (obfd)->the_default)
{
return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
}
return true;
}
/* Check flag compatibility. */
if (new_flags == old_flags)
return true;
if ((new_flags & EF_V850_ARCH) != (old_flags & EF_V850_ARCH))
{
_bfd_error_handler ("%s: Architecture mismatch with previous modules",
bfd_get_filename (ibfd));
#if 0
bfd_set_error (bfd_error_bad_value);
return false;
#else
return true;
#endif
}
return true;
}
/* Display the flags field */
static boolean
v850_elf_print_private_bfd_data (abfd, ptr)
bfd * abfd;
PTR ptr;
{
FILE * file = (FILE *) ptr;
BFD_ASSERT (abfd != NULL && ptr != NULL)
fprintf (file, "private flags = %x", elf_elfheader (abfd)->e_flags);
switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
{
default:
case E_V850_ARCH: fprintf (file, ": v850 architecture"); break;
/* start-sanitize-v850e */
case E_V850E_ARCH: fprintf (file, ": v850e architecture"); break;
case E_V850EQ_ARCH: fprintf (file, ": v850eq architecture"); break;
/* end-sanitize-v850e */
}
fputc ('\n', file);
return true;
}
/* V850 ELF uses four common sections. One is the usual one, and the
others are for (small) objects in one of the special data areas:
small, tiny and zero. All the objects are kept together, and then
referenced via the gp register, the ep register or the r0 register
respectively, which yields smaller, faster assembler code. This
approach is copied from elf32-mips.c. */
static asection v850_elf_scom_section;
static asymbol v850_elf_scom_symbol;
static asymbol * v850_elf_scom_symbol_ptr;
static asection v850_elf_tcom_section;
static asymbol v850_elf_tcom_symbol;
static asymbol * v850_elf_tcom_symbol_ptr;
static asection v850_elf_zcom_section;
static asymbol v850_elf_zcom_symbol;
static asymbol * v850_elf_zcom_symbol_ptr;
/* Given a BFD section, try to locate the corresponding ELF section
index. */
static boolean
v850_elf_section_from_bfd_section (abfd, hdr, sec, retval)
bfd * abfd;
Elf32_Internal_Shdr * hdr;
asection * sec;
int * retval;
{
if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
{
*retval = SHN_V850_SCOMMON;
return true;
}
if (strcmp (bfd_get_section_name (abfd, sec), ".tcommon") == 0)
{
*retval = SHN_V850_TCOMMON;
return true;
}
if (strcmp (bfd_get_section_name (abfd, sec), ".zcommon") == 0)
{
*retval = SHN_V850_ZCOMMON;
return true;
}
return false;
}
/* Handle the special V850 section numbers that a symbol may use. */
static void
v850_elf_symbol_processing (abfd, asym)
bfd * abfd;
asymbol * asym;
{
elf_symbol_type * elfsym = (elf_symbol_type *) asym;
switch (elfsym->internal_elf_sym.st_shndx)
{
case SHN_V850_SCOMMON:
if (v850_elf_scom_section.name == NULL)
{
/* Initialize the small common section. */
v850_elf_scom_section.name = ".scommon";
v850_elf_scom_section.flags = SEC_IS_COMMON | SEC_ALLOC | SEC_DATA;
v850_elf_scom_section.output_section = & v850_elf_scom_section;
v850_elf_scom_section.symbol = & v850_elf_scom_symbol;
v850_elf_scom_section.symbol_ptr_ptr = & v850_elf_scom_symbol_ptr;
v850_elf_scom_symbol.name = ".scommon";
v850_elf_scom_symbol.flags = BSF_SECTION_SYM;
v850_elf_scom_symbol.section = & v850_elf_scom_section;
v850_elf_scom_symbol_ptr = & v850_elf_scom_symbol;
}
asym->section = & v850_elf_scom_section;
asym->value = elfsym->internal_elf_sym.st_size;
break;
case SHN_V850_TCOMMON:
if (v850_elf_tcom_section.name == NULL)
{
/* Initialize the tcommon section. */
v850_elf_tcom_section.name = ".tcommon";
v850_elf_tcom_section.flags = SEC_IS_COMMON;
v850_elf_tcom_section.output_section = & v850_elf_tcom_section;
v850_elf_tcom_section.symbol = & v850_elf_tcom_symbol;
v850_elf_tcom_section.symbol_ptr_ptr = & v850_elf_tcom_symbol_ptr;
v850_elf_tcom_symbol.name = ".tcommon";
v850_elf_tcom_symbol.flags = BSF_SECTION_SYM;
v850_elf_tcom_symbol.section = & v850_elf_tcom_section;
v850_elf_tcom_symbol_ptr = & v850_elf_tcom_symbol;
}
asym->section = & v850_elf_tcom_section;
asym->value = elfsym->internal_elf_sym.st_size;
break;
case SHN_V850_ZCOMMON:
if (v850_elf_zcom_section.name == NULL)
{
/* Initialize the zcommon section. */
v850_elf_zcom_section.name = ".zcommon";
v850_elf_zcom_section.flags = SEC_IS_COMMON;
v850_elf_zcom_section.output_section = & v850_elf_zcom_section;
v850_elf_zcom_section.symbol = & v850_elf_zcom_symbol;
v850_elf_zcom_section.symbol_ptr_ptr = & v850_elf_zcom_symbol_ptr;
v850_elf_zcom_symbol.name = ".zcommon";
v850_elf_zcom_symbol.flags = BSF_SECTION_SYM;
v850_elf_zcom_symbol.section = & v850_elf_zcom_section;
v850_elf_zcom_symbol_ptr = & v850_elf_zcom_symbol;
}
asym->section = & v850_elf_zcom_section;
asym->value = elfsym->internal_elf_sym.st_size;
break;
}
}
/* Hook called by the linker routine which adds symbols from an object
file. We must handle the special MIPS section numbers here. */
/*ARGSUSED*/
static boolean
v850_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
bfd * abfd;
struct bfd_link_info * info;
const Elf_Internal_Sym * sym;
const char ** namep;
flagword * flagsp;
asection ** secp;
bfd_vma * valp;
{
switch (sym->st_shndx)
{
case SHN_V850_SCOMMON:
*secp = bfd_make_section_old_way (abfd, ".scommon");
(*secp)->flags |= SEC_IS_COMMON;
*valp = sym->st_size;
break;
case SHN_V850_TCOMMON:
*secp = bfd_make_section_old_way (abfd, ".tcommon");
(*secp)->flags |= SEC_IS_COMMON;
*valp = sym->st_size;
break;
case SHN_V850_ZCOMMON:
*secp = bfd_make_section_old_way (abfd, ".zcommon");
(*secp)->flags |= SEC_IS_COMMON;
*valp = sym->st_size;
break;
}
return true;
}
/*ARGSIGNORED*/
static boolean
v850_elf_link_output_symbol_hook (abfd, info, name, sym, input_sec)
bfd * abfd;
struct bfd_link_info * info;
const char * name;
Elf_Internal_Sym * sym;
asection * input_sec;
{
/* If we see a common symbol, which implies a relocatable link, then
if a symbol was in a special common section in an input file, mark
it as a special common in the output file. */
if (sym->st_shndx == SHN_COMMON)
{
if (strcmp (input_sec->name, ".scommon") == 0)
sym->st_shndx = SHN_V850_SCOMMON;
else if (strcmp (input_sec->name, ".tcommon") == 0)
sym->st_shndx = SHN_V850_TCOMMON;
else if (strcmp (input_sec->name, ".zcommon") == 0)
sym->st_shndx = SHN_V850_ZCOMMON;
}
return true;
}
static boolean
v850_elf_section_from_shdr (abfd, hdr, name)
bfd * abfd;
Elf_Internal_Shdr * hdr;
char * name;
{
/* There ought to be a place to keep ELF backend specific flags, but
at the moment there isn't one. We just keep track of the
sections by their name, instead. */
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
return false;
switch (hdr->sh_type)
{
case SHT_V850_SCOMMON:
case SHT_V850_TCOMMON:
case SHT_V850_ZCOMMON:
if (! bfd_set_section_flags (abfd, hdr->bfd_section,
(bfd_get_section_flags (abfd,
hdr->bfd_section)
| SEC_IS_COMMON)))
return false;
}
return true;
}
/* Set the correct type for a V850 ELF section. We do this by the
section name, which is a hack, but ought to work. */
static boolean
v850_elf_fake_sections (abfd, hdr, sec)
bfd * abfd;
Elf32_Internal_Shdr * hdr;
asection * sec;
{
register const char * name;
name = bfd_get_section_name (abfd, sec);
if (strcmp (name, ".scommon") == 0)
{
hdr->sh_type = SHT_V850_SCOMMON;
}
else if (strcmp (name, ".tcommon") == 0)
{
hdr->sh_type = SHT_V850_TCOMMON;
}
else if (strcmp (name, ".zcommon") == 0)
hdr->sh_type = SHT_V850_ZCOMMON;
return true;
}
#define TARGET_LITTLE_SYM bfd_elf32_v850_vec
#define TARGET_LITTLE_NAME "elf32-v850"
#define ELF_ARCH bfd_arch_v850
#define ELF_MACHINE_CODE EM_CYGNUS_V850
#define ELF_MAXPAGESIZE 0x1000
#define elf_info_to_howto 0
#define elf_info_to_howto_rel v850_elf_info_to_howto_rel
#define elf_backend_check_relocs v850_elf_check_relocs
#define elf_backend_relocate_section v850_elf_relocate_section
#define elf_backend_object_p v850_elf_object_p
#define elf_backend_final_write_processing v850_elf_final_write_processing
#define elf_backend_section_from_bfd_section v850_elf_section_from_bfd_section
#define elf_backend_symbol_processing v850_elf_symbol_processing
#define elf_backend_add_symbol_hook v850_elf_add_symbol_hook
#define elf_backend_link_output_symbol_hook v850_elf_link_output_symbol_hook
#define elf_backend_section_from_shdr v850_elf_section_from_shdr
#define elf_backend_fake_sections v850_elf_fake_sections
#define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name
#define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup
#define bfd_elf32_bfd_copy_private_bfd_data v850_elf_copy_private_bfd_data
#define bfd_elf32_bfd_merge_private_bfd_data v850_elf_merge_private_bfd_data
#define bfd_elf32_bfd_set_private_flags v850_elf_set_private_flags
#define bfd_elf32_bfd_print_private_bfd_data v850_elf_print_private_bfd_data
#define elf_symbol_leading_char '_'
#include "elf32-target.h"
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