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binutils-gdb/bfd/coff-m88k.c
Alan Modra 6f2750feaf Copyright update for binutils
2016-01-01 23:00:01 +10:30

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/* BFD back-end for Motorola 88000 COFF "Binary Compatibility Standard" files.
Copyright (C) 1990-2016 Free Software Foundation, Inc.
Written by Cygnus Support.
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. */
#define M88 1 /* Customize various include files */
#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#include "coff/m88k.h"
#include "coff/internal.h"
#include "libcoff.h"
static bfd_reloc_status_type m88k_special_reloc
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
#define GET_SCNHDR_NRELOC H_GET_32
#define GET_SCNHDR_NLNNO H_GET_32
/* On coff-m88k, local labels start with '@'. */
#define coff_bfd_is_local_label_name m88k_is_local_label_name
static bfd_boolean
m88k_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
{
return name[0] == '@';
}
static bfd_reloc_status_type
m88k_special_reloc (bfd *abfd,
arelent *reloc_entry,
asymbol *symbol,
void * data,
asection *input_section,
bfd *output_bfd,
char **error_message ATTRIBUTE_UNUSED)
{
reloc_howto_type *howto = reloc_entry->howto;
switch (howto->type)
{
case R_HVRT16:
case R_LVRT16:
if (output_bfd != (bfd *) NULL)
{
/* This is a partial relocation, and we want to apply the
relocation to the reloc entry rather than the raw data.
Modify the reloc inplace to reflect what we now know. */
reloc_entry->address += input_section->output_offset;
}
else
{
bfd_vma output_base = 0;
bfd_vma addr = reloc_entry->address;
bfd_vma x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
asection *reloc_target_output_section;
long relocation = 0;
/* Work out which section the relocation is targeted 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;
reloc_target_output_section = symbol->section->output_section;
/* Convert input-section-relative symbol value to absolute. */
if (output_bfd)
output_base = 0;
else
output_base = reloc_target_output_section->vma;
relocation += output_base + symbol->section->output_offset;
/* Add in supplied addend. */
relocation += ((reloc_entry->addend << howto->bitsize) + x);
reloc_entry->addend = 0;
relocation >>= (bfd_vma) howto->rightshift;
/* Shift everything up to where it's going to be used */
relocation <<= (bfd_vma) howto->bitpos;
if (relocation)
bfd_put_16 (abfd, (bfd_vma) relocation,
(unsigned char *) data + addr);
}
/* If we are not producing relocatable output, return an error if
the symbol is not defined. */
if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
return bfd_reloc_undefined;
return bfd_reloc_ok;
default:
if (output_bfd != (bfd *) NULL)
{
/* This is a partial relocation, and we want to apply the
relocation to the reloc entry rather than the raw data.
Modify the reloc inplace to reflect what we now know. */
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
break;
}
if (output_bfd == (bfd *) NULL)
return bfd_reloc_continue;
return bfd_reloc_ok;
}
static reloc_howto_type howto_table[] =
{
HOWTO (R_PCR16L, /* type */
02, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
m88k_special_reloc, /* special_function */
"PCR16L", /* name */
FALSE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_PCR26L, /* type */
02, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
26, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
m88k_special_reloc, /* special_function */
"PCR26L", /* name */
FALSE, /* partial_inplace */
0x03ffffff, /* src_mask */
0x03ffffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_VRT16, /* type */
00, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
m88k_special_reloc, /* special_function */
"VRT16", /* name */
FALSE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_HVRT16, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
m88k_special_reloc, /* special_function */
"HVRT16", /* name */
FALSE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_LVRT16, /* type */
00, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
m88k_special_reloc, /* special_function */
"LVRT16", /* name */
FALSE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_VRT32, /* type */
00, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
m88k_special_reloc, /* special_function */
"VRT32", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
};
/* Code to turn an external r_type into a pointer to an entry in the
above howto table. */
static void
rtype2howto (arelent *cache_ptr, struct internal_reloc *dst)
{
if (dst->r_type >= R_PCR16L && dst->r_type <= R_VRT32)
{
cache_ptr->howto = howto_table + dst->r_type - R_PCR16L;
}
else
{
BFD_ASSERT (0);
}
}
#define RTYPE2HOWTO(cache_ptr, dst) rtype2howto (cache_ptr, dst)
/* Code to swap in the reloc offset */
#define SWAP_IN_RELOC_OFFSET H_GET_16
#define SWAP_OUT_RELOC_OFFSET H_PUT_16
#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
reloc_processing(relent, reloc, symbols, abfd, section)
static void
reloc_processing (arelent *relent,
struct internal_reloc *reloc,
asymbol **symbols,
bfd *abfd,
asection *section)
{
relent->address = reloc->r_vaddr;
rtype2howto (relent, reloc);
if (((int) reloc->r_symndx) > 0)
{
relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
}
else
{
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
}
relent->addend = reloc->r_offset;
relent->address -= section->vma;
}
#define BADMAG(x) MC88BADMAG(x)
#ifndef bfd_pe_print_pdata
#define bfd_pe_print_pdata NULL
#endif
#include "coffcode.h"
#undef coff_write_armap
CREATE_BIG_COFF_TARGET_VEC (m88k_coff_bcs_vec, "coff-m88kbcs", 0, 0, '_', NULL, COFF_SWAP_TABLE)
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