1 /* BFD back-end for Motorola 88000 COFF "Binary Compatability Standard" files.
2 Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 #define M88 1 /* Customize various include files */
26 #include "coff/m88k.h"
27 #include "coff/internal.h"
30 static bfd_reloc_status_type m88k_special_reloc
31 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
32 static void rtype2howto PARAMS ((arelent *, struct internal_reloc *));
33 static void reloc_processing
34 PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *));
36 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (3)
38 static bfd_reloc_status_type
39 m88k_special_reloc (abfd, reloc_entry, symbol, data,
40 input_section, output_bfd, error_message)
45 asection *input_section;
49 reloc_howto_type *howto = reloc_entry->howto;
55 if (output_bfd != (bfd *) NULL)
57 /* This is a partial relocation, and we want to apply the
58 relocation to the reloc entry rather than the raw data.
59 Modify the reloc inplace to reflect what we now know. */
61 reloc_entry->address += input_section->output_offset;
65 bfd_vma output_base = 0;
66 bfd_vma addr = reloc_entry->address;
67 bfd_vma x = bfd_get_16 (abfd, (bfd_byte *) data + addr);
68 asection *reloc_target_output_section;
71 /* Work out which section the relocation is targetted at and the
72 initial relocation command value. */
74 /* Get symbol value. (Common symbols are special.) */
75 if (bfd_is_com_section (symbol->section))
78 relocation = symbol->value;
80 reloc_target_output_section = symbol->section->output_section;
82 /* Convert input-section-relative symbol value to absolute. */
86 output_base = reloc_target_output_section->vma;
88 relocation += output_base + symbol->section->output_offset;
90 /* Add in supplied addend. */
91 relocation += ((reloc_entry->addend << howto->bitsize) + x);
93 reloc_entry->addend = 0;
95 relocation >>= (bfd_vma) howto->rightshift;
97 /* Shift everything up to where it's going to be used */
99 relocation <<= (bfd_vma) howto->bitpos;
102 bfd_put_16 (abfd, relocation, (unsigned char *) data + addr);
109 if (output_bfd != (bfd *) NULL)
111 /* This is a partial relocation, and we want to apply the
112 relocation to the reloc entry rather than the raw data.
113 Modify the reloc inplace to reflect what we now know. */
115 reloc_entry->address += input_section->output_offset;
121 if (output_bfd == (bfd *) NULL)
122 return bfd_reloc_continue;
127 static reloc_howto_type howto_table[] =
129 HOWTO (R_PCR16L, /* type */
131 1, /* size (0 = byte, 1 = short, 2 = long) */
133 true, /* pc_relative */
135 complain_overflow_signed, /* complain_on_overflow */
136 m88k_special_reloc, /* special_function */
138 false, /* partial_inplace */
139 0x0000ffff, /* src_mask */
140 0x0000ffff, /* dst_mask */
141 true), /* pcrel_offset */
143 HOWTO (R_PCR26L, /* type */
145 2, /* 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 0x03ffffff, /* src_mask */
154 0x03ffffff, /* dst_mask */
155 true), /* pcrel_offset */
157 HOWTO (R_VRT16, /* type */
159 1, /* size (0 = byte, 1 = short, 2 = long) */
161 false, /* pc_relative */
163 complain_overflow_bitfield, /* complain_on_overflow */
164 m88k_special_reloc, /* special_function */
166 false, /* partial_inplace */
167 0x0000ffff, /* src_mask */
168 0x0000ffff, /* dst_mask */
169 true), /* pcrel_offset */
171 HOWTO (R_HVRT16, /* type */
173 1, /* size (0 = byte, 1 = short, 2 = long) */
175 false, /* pc_relative */
177 complain_overflow_dont, /* 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_LVRT16, /* 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_VRT32, /* type */
201 2, /* size (0 = byte, 1 = short, 2 = long) */
203 false, /* pc_relative */
205 complain_overflow_bitfield, /* complain_on_overflow */
206 m88k_special_reloc, /* special_function */
208 false, /* partial_inplace */
209 0xffffffff, /* src_mask */
210 0xffffffff, /* dst_mask */
211 true), /* pcrel_offset */
214 /* Code to turn an external r_type into a pointer to an entry in the
215 above howto table. */
217 rtype2howto (cache_ptr, dst)
219 struct internal_reloc *dst;
221 if (dst->r_type >= R_PCR16L && dst->r_type <= R_VRT32)
223 cache_ptr->howto = howto_table + dst->r_type - R_PCR16L;
231 #define RTYPE2HOWTO(cache_ptr, dst) rtype2howto (cache_ptr, dst)
234 /* Code to swap in the reloc offset */
235 #define SWAP_IN_RELOC_OFFSET bfd_h_get_16
236 #define SWAP_OUT_RELOC_OFFSET bfd_h_put_16
239 #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
240 reloc_processing(relent, reloc, symbols, abfd, section)
243 reloc_processing (relent, reloc, symbols, abfd, section)
245 struct internal_reloc *reloc;
250 relent->address = reloc->r_vaddr;
251 rtype2howto (relent, reloc);
253 if (((int) reloc->r_symndx) > 0)
255 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
259 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
262 relent->addend = reloc->r_offset;
263 relent->address -= section->vma;
266 #define BADMAG(x) MC88BADMAG(x)
267 #include "coffcode.h"
269 #undef coff_write_armap
271 const bfd_target m88kbcs_vec =
273 "coff-m88kbcs", /* name */
274 bfd_target_coff_flavour,
275 true, /* data byte order is big */
276 true, /* header byte order is big */
278 (HAS_RELOC | EXEC_P | /* object flags */
279 HAS_LINENO | HAS_DEBUG |
280 HAS_SYMS | HAS_LOCALS | WP_TEXT),
282 (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
283 '_', /* leading underscore */
284 '/', /* ar_pad_char */
285 15, /* ar_max_namelen */
286 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
287 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
288 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
289 bfd_getb64, bfd_getb_signed_64, bfd_putb64,
290 bfd_getb32, bfd_getb_signed_32, bfd_putb32,
291 bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
293 {_bfd_dummy_target, coff_object_p, /* bfd_check_format */
294 bfd_generic_archive_p, _bfd_dummy_target},
295 {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
297 {bfd_false, coff_write_object_contents, /* bfd_write_contents */
298 _bfd_write_archive_contents, bfd_false},
300 BFD_JUMP_TABLE_GENERIC (coff),
301 BFD_JUMP_TABLE_COPY (coff),
302 BFD_JUMP_TABLE_CORE (_bfd_nocore),
303 BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
304 BFD_JUMP_TABLE_SYMBOLS (coff),
305 BFD_JUMP_TABLE_RELOCS (coff),
306 BFD_JUMP_TABLE_WRITE (coff),
307 BFD_JUMP_TABLE_LINK (coff),
308 BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),