1
/* BFD back-end for Motorola 88000 COFF "Binary Compatibility Standard" files.
2
Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1997, 1998, 1999, 2000,
3
2001, 2002, 2003, 2005, 2007, 2008, 2012 Free Software Foundation, Inc.
4
Written by Cygnus Support.
6
This file is part of BFD, the Binary File Descriptor library.
8
This program is free software; you can redistribute it and/or modify
9
it under the terms of the GNU General Public License as published by
10
the Free Software Foundation; either version 3 of the License, or
11
(at your option) any later version.
13
This program is distributed in the hope that it will be useful,
14
but WITHOUT ANY WARRANTY; without even the implied warranty of
15
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16
GNU General Public License for more details.
18
You should have received a copy of the GNU General Public License
19
along with this program; if not, write to the Free Software
20
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21
MA 02110-1301, USA. */
23
#define M88 1 /* Customize various include files */
27
#include "coff/m88k.h"
28
#include "coff/internal.h"
31
static bfd_reloc_status_type m88k_special_reloc
32
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
34
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
36
#define GET_SCNHDR_NRELOC H_GET_32
37
#define GET_SCNHDR_NLNNO H_GET_32
39
/* On coff-m88k, local labels start with '@'. */
41
#define coff_bfd_is_local_label_name m88k_is_local_label_name
44
m88k_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, const char *name)
46
return name[0] == '@';
49
static bfd_reloc_status_type
50
m88k_special_reloc (bfd *abfd,
54
asection *input_section,
56
char **error_message ATTRIBUTE_UNUSED)
58
reloc_howto_type *howto = reloc_entry->howto;
64
if (output_bfd != (bfd *) NULL)
66
/* This is a partial relocation, and we want to apply the
67
relocation to the reloc entry rather than the raw data.
68
Modify the reloc inplace to reflect what we now know. */
70
reloc_entry->address += input_section->output_offset;
74
bfd_vma output_base = 0;
75
bfd_vma addr = reloc_entry->address;
76
bfd_vma x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
77
asection *reloc_target_output_section;
80
/* Work out which section the relocation is targeted at and the
81
initial relocation command value. */
83
/* Get symbol value. (Common symbols are special.) */
84
if (bfd_is_com_section (symbol->section))
87
relocation = symbol->value;
89
reloc_target_output_section = symbol->section->output_section;
91
/* Convert input-section-relative symbol value to absolute. */
95
output_base = reloc_target_output_section->vma;
97
relocation += output_base + symbol->section->output_offset;
99
/* Add in supplied addend. */
100
relocation += ((reloc_entry->addend << howto->bitsize) + x);
102
reloc_entry->addend = 0;
104
relocation >>= (bfd_vma) howto->rightshift;
106
/* Shift everything up to where it's going to be used */
108
relocation <<= (bfd_vma) howto->bitpos;
111
bfd_put_16 (abfd, (bfd_vma) relocation,
112
(unsigned char *) data + addr);
115
/* If we are not producing relocatable output, return an error if
116
the symbol is not defined. */
117
if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
118
return bfd_reloc_undefined;
123
if (output_bfd != (bfd *) NULL)
125
/* This is a partial relocation, and we want to apply the
126
relocation to the reloc entry rather than the raw data.
127
Modify the reloc inplace to reflect what we now know. */
129
reloc_entry->address += input_section->output_offset;
135
if (output_bfd == (bfd *) NULL)
136
return bfd_reloc_continue;
141
static reloc_howto_type howto_table[] =
143
HOWTO (R_PCR16L, /* type */
145
1, /* size (0 = byte, 1 = short, 2 = long) */
147
TRUE, /* pc_relative */
149
complain_overflow_signed, /* complain_on_overflow */
150
m88k_special_reloc, /* special_function */
152
FALSE, /* partial_inplace */
153
0x0000ffff, /* src_mask */
154
0x0000ffff, /* dst_mask */
155
TRUE), /* pcrel_offset */
157
HOWTO (R_PCR26L, /* type */
159
2, /* size (0 = byte, 1 = short, 2 = long) */
161
TRUE, /* pc_relative */
163
complain_overflow_signed, /* complain_on_overflow */
164
m88k_special_reloc, /* special_function */
166
FALSE, /* partial_inplace */
167
0x03ffffff, /* src_mask */
168
0x03ffffff, /* dst_mask */
169
TRUE), /* pcrel_offset */
171
HOWTO (R_VRT16, /* type */
173
1, /* size (0 = byte, 1 = short, 2 = long) */
175
FALSE, /* pc_relative */
177
complain_overflow_bitfield, /* complain_on_overflow */
178
m88k_special_reloc, /* special_function */
180
FALSE, /* partial_inplace */
181
0x0000ffff, /* src_mask */
182
0x0000ffff, /* dst_mask */
183
TRUE), /* pcrel_offset */
185
HOWTO (R_HVRT16, /* type */
187
1, /* size (0 = byte, 1 = short, 2 = long) */
189
FALSE, /* pc_relative */
191
complain_overflow_dont, /* complain_on_overflow */
192
m88k_special_reloc, /* special_function */
194
FALSE, /* partial_inplace */
195
0x0000ffff, /* src_mask */
196
0x0000ffff, /* dst_mask */
197
TRUE), /* pcrel_offset */
199
HOWTO (R_LVRT16, /* type */
201
1, /* size (0 = byte, 1 = short, 2 = long) */
203
FALSE, /* pc_relative */
205
complain_overflow_dont, /* complain_on_overflow */
206
m88k_special_reloc, /* special_function */
208
FALSE, /* partial_inplace */
209
0x0000ffff, /* src_mask */
210
0x0000ffff, /* dst_mask */
211
TRUE), /* pcrel_offset */
213
HOWTO (R_VRT32, /* type */
215
2, /* size (0 = byte, 1 = short, 2 = long) */
217
FALSE, /* pc_relative */
219
complain_overflow_bitfield, /* complain_on_overflow */
220
m88k_special_reloc, /* special_function */
222
FALSE, /* partial_inplace */
223
0xffffffff, /* src_mask */
224
0xffffffff, /* dst_mask */
225
TRUE), /* pcrel_offset */
228
/* Code to turn an external r_type into a pointer to an entry in the
229
above howto table. */
231
rtype2howto (arelent *cache_ptr, struct internal_reloc *dst)
233
if (dst->r_type >= R_PCR16L && dst->r_type <= R_VRT32)
235
cache_ptr->howto = howto_table + dst->r_type - R_PCR16L;
243
#define RTYPE2HOWTO(cache_ptr, dst) rtype2howto (cache_ptr, dst)
245
/* Code to swap in the reloc offset */
246
#define SWAP_IN_RELOC_OFFSET H_GET_16
247
#define SWAP_OUT_RELOC_OFFSET H_PUT_16
249
#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
250
reloc_processing(relent, reloc, symbols, abfd, section)
253
reloc_processing (arelent *relent,
254
struct internal_reloc *reloc,
259
relent->address = reloc->r_vaddr;
260
rtype2howto (relent, reloc);
262
if (((int) reloc->r_symndx) > 0)
264
relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
268
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
271
relent->addend = reloc->r_offset;
272
relent->address -= section->vma;
275
#define BADMAG(x) MC88BADMAG(x)
277
#ifndef bfd_pe_print_pdata
278
#define bfd_pe_print_pdata NULL
281
#include "coffcode.h"
283
#undef coff_write_armap
285
CREATE_BIG_COFF_TARGET_VEC (m88kbcs_vec, "coff-m88kbcs", 0, 0, '_', NULL, COFF_SWAP_TABLE)