356 lines
10 KiB
C
356 lines
10 KiB
C
/* BFD back-end for Hitachi Super-H COFF binaries.
|
|
Copyright 1993, 1994, 1995 Free Software Foundation, Inc.
|
|
Contributed by Cygnus Support.
|
|
Written by Steve Chamberlain, <sac@cygnus.com>.
|
|
|
|
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
#include "bfd.h"
|
|
#include "sysdep.h"
|
|
#include "obstack.h"
|
|
#include "libbfd.h"
|
|
#include "bfdlink.h"
|
|
#include "coff/sh.h"
|
|
#include "coff/internal.h"
|
|
#include "libcoff.h"
|
|
|
|
static bfd_reloc_status_type sh_reloc();
|
|
|
|
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2)
|
|
|
|
/*#define COFF_LONG_FILENAMES*/
|
|
|
|
static reloc_howto_type r_imm32 =
|
|
{R_SH_IMM32, 0, 2, 32, false, 0,
|
|
complain_overflow_bitfield, sh_reloc,"r_imm32", true, 0xffffffff,0xffffffff, false};
|
|
|
|
|
|
#define BADMAG(x) SHBADMAG(x)
|
|
#define SH 1 /* Customize coffcode.h */
|
|
|
|
#define __A_MAGIC_SET__
|
|
|
|
/* Code to swap in the reloc */
|
|
#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
|
|
dst->r_stuff[0] = 'S'; \
|
|
dst->r_stuff[1] = 'C';
|
|
|
|
/* Code to turn a r_type into a howto ptr, uses the above howto table. */
|
|
static long
|
|
get_symbol_value (symbol)
|
|
asymbol *symbol;
|
|
{
|
|
long relocation = 0;
|
|
|
|
if (bfd_is_com_section (symbol->section))
|
|
{
|
|
relocation = 0;
|
|
}
|
|
else
|
|
{
|
|
relocation = symbol->value +
|
|
symbol->section->output_section->vma +
|
|
symbol->section->output_offset;
|
|
}
|
|
|
|
return(relocation);
|
|
}
|
|
|
|
#define RTYPE2HOWTO(x,y) ((x)->howto = &r_imm32)
|
|
|
|
|
|
/* Compute the addend of a reloc. If the reloc is to a common symbol,
|
|
the object file contains the value of the common symbol. By the
|
|
time this is called, the linker may be using a different symbol
|
|
from a different object file with a different value. Therefore, we
|
|
hack wildly to locate the original symbol from this file so that we
|
|
can make the correct adjustment. This macro sets coffsym to the
|
|
symbol from the original file, and uses it to set the addend value
|
|
correctly. If this is not a common symbol, the usual addend
|
|
calculation is done, except that an additional tweak is needed for
|
|
PC relative relocs.
|
|
FIXME: This macro refers to symbols and asect; these are from the
|
|
calling function, not the macro arguments. */
|
|
|
|
#define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \
|
|
{ \
|
|
coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \
|
|
if (ptr && bfd_asymbol_bfd (ptr) != abfd) \
|
|
coffsym = (obj_symbols (abfd) \
|
|
+ (cache_ptr->sym_ptr_ptr - symbols)); \
|
|
else if (ptr) \
|
|
coffsym = coff_symbol_from (abfd, ptr); \
|
|
if (coffsym != (coff_symbol_type *) NULL \
|
|
&& coffsym->native->u.syment.n_scnum == 0) \
|
|
cache_ptr->addend = - coffsym->native->u.syment.n_value; \
|
|
else if (ptr && bfd_asymbol_bfd (ptr) == abfd \
|
|
&& ptr->section != (asection *) NULL) \
|
|
cache_ptr->addend = - (ptr->section->vma + ptr->value); \
|
|
else \
|
|
cache_ptr->addend = 0; \
|
|
}
|
|
|
|
/* this function is in charge of performing all the 29k relocations */
|
|
|
|
static bfd_reloc_status_type
|
|
sh_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd,
|
|
error_message)
|
|
bfd *abfd;
|
|
arelent *reloc_entry;
|
|
asymbol *symbol_in;
|
|
PTR data;
|
|
asection *input_section;
|
|
bfd *output_bfd;
|
|
char **error_message;
|
|
{
|
|
/* the consth relocation comes in two parts, we have to remember
|
|
the state between calls, in these variables */
|
|
unsigned long insn;
|
|
unsigned long sym_value;
|
|
unsigned short r_type;
|
|
|
|
unsigned long addr = reloc_entry->address ; /*+ input_section->vma*/
|
|
bfd_byte *hit_data =addr + (bfd_byte *)(data);
|
|
|
|
r_type = reloc_entry->howto->type;
|
|
|
|
if (output_bfd) {
|
|
/* Partial linking - do nothing */
|
|
reloc_entry->address += input_section->output_offset;
|
|
return bfd_reloc_ok;
|
|
}
|
|
|
|
if (symbol_in != NULL
|
|
&& bfd_is_und_section (symbol_in->section))
|
|
{
|
|
/* Keep the state machine happy in case we're called again */
|
|
return (bfd_reloc_undefined);
|
|
}
|
|
|
|
|
|
sym_value = get_symbol_value(symbol_in);
|
|
|
|
switch (r_type)
|
|
{
|
|
case R_SH_IMM32:
|
|
insn = sym_value + reloc_entry->addend;
|
|
insn += bfd_get_32 (abfd, hit_data);
|
|
bfd_put_32(abfd, insn, hit_data);
|
|
break;
|
|
default:
|
|
*error_message = "Unrecognized reloc";
|
|
return (bfd_reloc_dangerous);
|
|
}
|
|
|
|
|
|
return(bfd_reloc_ok);
|
|
}
|
|
|
|
/* The reloc processing routine for the optimized COFF linker. */
|
|
|
|
static boolean
|
|
coff_sh_relocate_section (output_bfd, info, input_bfd, input_section,
|
|
contents, relocs, syms, sections)
|
|
bfd *output_bfd;
|
|
struct bfd_link_info *info;
|
|
bfd *input_bfd;
|
|
asection *input_section;
|
|
bfd_byte *contents;
|
|
struct internal_reloc *relocs;
|
|
struct internal_syment *syms;
|
|
asection **sections;
|
|
{
|
|
struct internal_reloc *rel;
|
|
struct internal_reloc *relend;
|
|
|
|
/* If we are performing a relocateable link, we don't need to do a
|
|
thing. The caller will take care of adjusting the reloc
|
|
addresses and symbol indices. */
|
|
if (info->relocateable)
|
|
return true;
|
|
|
|
|
|
rel = relocs;
|
|
relend = rel + input_section->reloc_count;
|
|
for (; rel < relend; rel++)
|
|
{
|
|
long symndx;
|
|
bfd_byte *loc;
|
|
struct coff_link_hash_entry *h;
|
|
struct internal_syment *sym;
|
|
asection *sec;
|
|
bfd_vma val;
|
|
|
|
symndx = rel->r_symndx;
|
|
loc = contents + rel->r_vaddr - input_section->vma;
|
|
|
|
if (symndx == -1)
|
|
h = NULL;
|
|
else
|
|
h = obj_coff_sym_hashes (input_bfd)[symndx];
|
|
|
|
sym = NULL;
|
|
sec = NULL;
|
|
val = 0;
|
|
|
|
|
|
if (h == NULL)
|
|
{
|
|
if (symndx == -1)
|
|
sec = bfd_abs_section_ptr;
|
|
else
|
|
{
|
|
sym = syms + symndx;
|
|
sec = sections[symndx];
|
|
val = (sec->output_section->vma
|
|
+ sec->output_offset
|
|
+ sym->n_value
|
|
- sec->vma);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (h->root.type == bfd_link_hash_defined)
|
|
{
|
|
sec = h->root.u.def.section;
|
|
val = (h->root.u.def.value
|
|
+ sec->output_section->vma
|
|
+ sec->output_offset);
|
|
}
|
|
else
|
|
{
|
|
if (! ((*info->callbacks->undefined_symbol)
|
|
(info, h->root.root.string, input_bfd, input_section,
|
|
rel->r_vaddr - input_section->vma)))
|
|
return false;
|
|
}
|
|
}
|
|
|
|
switch (rel->r_type)
|
|
{
|
|
default:
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return false;
|
|
|
|
case R_SH_IMM32:
|
|
{
|
|
long x = bfd_get_32 (input_bfd, loc);
|
|
x += val;
|
|
bfd_put_32 (input_bfd, x, loc);
|
|
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
#define coff_relocate_section coff_sh_relocate_section
|
|
#include "coffcode.h"
|
|
|
|
const bfd_target shcoff_vec =
|
|
{
|
|
"coff-sh", /* name */
|
|
bfd_target_coff_flavour,
|
|
true, /* data byte order is big */
|
|
true, /* header byte order is big */
|
|
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
HAS_LINENO | HAS_DEBUG |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE ),
|
|
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
|
'_', /* leading symbol underscore */
|
|
'/', /* ar_pad_char */
|
|
15, /* ar_max_namelen */
|
|
2, /* minimum section alignment */
|
|
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
|
|
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
|
|
|
|
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
|
|
bfd_generic_archive_p, _bfd_dummy_target},
|
|
{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
|
|
bfd_false},
|
|
{bfd_false, coff_write_object_contents, /* bfd_write_contents */
|
|
_bfd_write_archive_contents, bfd_false},
|
|
|
|
BFD_JUMP_TABLE_GENERIC (coff),
|
|
BFD_JUMP_TABLE_COPY (coff),
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
|
BFD_JUMP_TABLE_SYMBOLS (coff),
|
|
BFD_JUMP_TABLE_RELOCS (coff),
|
|
BFD_JUMP_TABLE_WRITE (coff),
|
|
BFD_JUMP_TABLE_LINK (coff),
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
COFF_SWAP_TABLE,
|
|
};
|
|
|
|
const bfd_target shlcoff_vec =
|
|
{
|
|
"coff-shl", /* name */
|
|
bfd_target_coff_flavour,
|
|
false, /* data byte order is little */
|
|
false, /* header byte order is little endian too*/
|
|
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
HAS_LINENO | HAS_DEBUG |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE ),
|
|
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
|
'_', /* leading symbol underscore */
|
|
'/', /* ar_pad_char */
|
|
15, /* ar_max_namelen */
|
|
2, /* minimum section alignment */
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */
|
|
bfd_getl64, bfd_getl_signed_64, bfd_putl64,
|
|
bfd_getl32, bfd_getl_signed_32, bfd_putl32,
|
|
bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */
|
|
|
|
/* Note that we use a special archive recognizer.
|
|
This is so that we only use one archive format for both
|
|
object file types */
|
|
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
|
|
_bfd_dummy_target, _bfd_dummy_target},
|
|
{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
|
|
bfd_false},
|
|
{bfd_false, coff_write_object_contents, /* bfd_write_contents */
|
|
_bfd_write_archive_contents, bfd_false},
|
|
|
|
BFD_JUMP_TABLE_GENERIC (coff),
|
|
BFD_JUMP_TABLE_COPY (coff),
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
|
BFD_JUMP_TABLE_SYMBOLS (coff),
|
|
BFD_JUMP_TABLE_RELOCS (coff),
|
|
BFD_JUMP_TABLE_WRITE (coff),
|
|
BFD_JUMP_TABLE_LINK (coff),
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
COFF_SWAP_TABLE,
|
|
};
|
|
|