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[/] [or1k/] [trunk/] [insight/] [bfd/] [coff-h8500.c] - Blame information for rev 1776

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1 578 markom
/* BFD back-end for Hitachi H8/500 COFF binaries.
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   Copyright 1993, 1994, 1995, 1997, 1999, 2000
3
   Free Software Foundation, Inc.
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   Contributed by Cygnus Support.
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   Written by Steve Chamberlain, <sac@cygnus.com>.
6
 
7
This file is part of BFD, the Binary File Descriptor library.
8
 
9
This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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GNU General Public License for more details.
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19
You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
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23
#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "bfdlink.h"
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#include "coff/h8500.h"
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#include "coff/internal.h"
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#include "libcoff.h"
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31
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
32
 
33
static reloc_howto_type r_imm8 =
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HOWTO (R_H8500_IMM8, 0, 1, 8, false, 0,
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       complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff, false);
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static reloc_howto_type r_imm16 =
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HOWTO (R_H8500_IMM16, 0, 1, 16, false, 0,
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       complain_overflow_bitfield, 0, "r_imm16", true, 0x0000ffff, 0x0000ffff, false);
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static reloc_howto_type r_imm24 =
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HOWTO (R_H8500_IMM24, 0, 1, 24, false, 0,
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       complain_overflow_bitfield, 0, "r_imm24", true, 0x00ffffff, 0x00ffffff, false);
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45
static reloc_howto_type r_imm32 =
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HOWTO (R_H8500_IMM32, 0, 1, 32, false, 0,
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       complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff, 0xffffffff, false);
48
 
49
static reloc_howto_type r_high8 =
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HOWTO (R_H8500_HIGH8, 0, 1, 8, false, 0,
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       complain_overflow_dont, 0, "r_high8", true, 0x000000ff, 0x000000ff, false);
52
 
53
static reloc_howto_type r_low16 =
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HOWTO (R_H8500_LOW16, 0, 1, 16, false, 0,
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       complain_overflow_dont, 0, "r_low16", true, 0x0000ffff, 0x0000ffff, false);
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57
static reloc_howto_type r_pcrel8 =
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HOWTO (R_H8500_PCREL8, 0, 1, 8, true, 0, complain_overflow_signed, 0, "r_pcrel8", true, 0, 0, true);
59
 
60
static reloc_howto_type r_pcrel16 =
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HOWTO (R_H8500_PCREL16, 0, 1, 16, true, 0, complain_overflow_signed, 0, "r_pcrel16", true, 0, 0, true);
62
 
63
static reloc_howto_type r_high16 =
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HOWTO (R_H8500_HIGH16, 0, 1, 8, false, 0,
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       complain_overflow_dont, 0, "r_high16", true, 0x000ffff, 0x0000ffff, false);
66
 
67
/* Turn a howto into a reloc number */
68
 
69
static int
70
coff_h8500_select_reloc (howto)
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     reloc_howto_type *howto;
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{
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  return howto->type;
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}
75
 
76
#define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto)
77
 
78
#define BADMAG(x) H8500BADMAG(x)
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#define H8500 1                 /* Customize coffcode.h */
80
 
81
#define __A_MAGIC_SET__
82
 
83
/* Code to swap in the reloc */
84
#define SWAP_IN_RELOC_OFFSET   bfd_h_get_32
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#define SWAP_OUT_RELOC_OFFSET bfd_h_put_32
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#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
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  dst->r_stuff[0] = 'S'; \
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  dst->r_stuff[1] = 'C';
89
 
90
/* Code to turn a r_type into a howto ptr, uses the above howto table
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   */
92
 
93
static void
94
rtype2howto(internal, dst)
95
     arelent * internal;
96
     struct internal_reloc *dst;
97
{
98
  switch (dst->r_type)
99
    {
100
    default:
101
      abort ();
102
      break;
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    case R_H8500_IMM8:
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      internal->howto = &r_imm8;
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      break;
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    case R_H8500_IMM16:
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      internal->howto = &r_imm16;
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      break;
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    case R_H8500_IMM24:
110
      internal->howto = &r_imm24;
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      break;
112
    case R_H8500_IMM32:
113
      internal->howto = &r_imm32;
114
      break;
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    case R_H8500_PCREL8:
116
      internal->howto = &r_pcrel8;
117
      break;
118
    case R_H8500_PCREL16:
119
      internal->howto = &r_pcrel16;
120
      break;
121
    case R_H8500_HIGH8:
122
      internal->howto = &r_high8;
123
      break;
124
    case R_H8500_HIGH16:
125
      internal->howto = &r_high16;
126
      break;
127
    case R_H8500_LOW16:
128
      internal->howto = &r_low16;
129
      break;
130
    }
131
}
132
 
133
#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
134
 
135
/* Perform any necessary magic to the addend in a reloc entry */
136
 
137
#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
138
 cache_ptr->addend =  ext_reloc.r_offset;
139
 
140
#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
141
 reloc_processing(relent, reloc, symbols, abfd, section)
142
 
143
static void reloc_processing (relent, reloc, symbols, abfd, section)
144
     arelent * relent;
145
     struct internal_reloc *reloc;
146
     asymbol ** symbols;
147
     bfd * abfd;
148
     asection * section;
149
{
150
  relent->address = reloc->r_vaddr;
151
  rtype2howto (relent, reloc);
152
 
153
  if (reloc->r_symndx > 0)
154
    {
155
      relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
156
    }
157
  else
158
    {
159
      relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
160
    }
161
 
162
  relent->addend = reloc->r_offset;
163
  relent->address -= section->vma;
164
}
165
 
166
static void
167
extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)
168
     bfd *in_abfd;
169
     struct bfd_link_info *link_info;
170
     struct bfd_link_order *link_order;
171
     arelent *reloc;
172
     bfd_byte *data;
173
     unsigned int *src_ptr;
174
     unsigned int *dst_ptr;
175
{
176
  bfd_byte *d = data+*dst_ptr;
177
  asection *input_section = link_order->u.indirect.section;
178
  switch (reloc->howto->type)
179
    {
180
    case R_H8500_IMM8:
181
      bfd_put_8 (in_abfd,
182
                 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
183
                 d);
184
      (*dst_ptr) += 1;
185
      (*src_ptr) += 1;
186
      break;
187
 
188
    case R_H8500_HIGH8:
189
      bfd_put_8 (in_abfd,
190
                 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
191
                  >> 16),
192
                 d );
193
      (*dst_ptr) += 1;
194
      (*src_ptr) += 1;
195
      break;
196
 
197
    case R_H8500_IMM16:
198
      bfd_put_16 (in_abfd,
199
                  bfd_coff_reloc16_get_value (reloc, link_info, input_section),
200
                  d  );
201
      (*dst_ptr) += 2;
202
      (*src_ptr) += 2;
203
      break;
204
 
205
    case R_H8500_LOW16:
206
      bfd_put_16 (in_abfd,
207
                  bfd_coff_reloc16_get_value (reloc, link_info, input_section),
208
                  d);
209
 
210
      (*dst_ptr) += 2;
211
      (*src_ptr) += 2;
212
      break;
213
 
214
    case R_H8500_HIGH16:
215
      bfd_put_16 (in_abfd,
216
                  (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
217
                   >>16),
218
                  d);
219
 
220
      (*dst_ptr) += 2;
221
      (*src_ptr) += 2;
222
      break;
223
 
224
    case R_H8500_IMM24:
225
      {
226
        int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
227
        int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1);
228
        v = (v & 0x00ffffff) | (o & 0xff00000);
229
        bfd_put_32 (in_abfd, v, data  + *dst_ptr -1);
230
        (*dst_ptr) +=3;
231
        (*src_ptr)+=3;;
232
      }
233
      break;
234
    case R_H8500_IMM32:
235
      {
236
        int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
237
        bfd_put_32 (in_abfd, v, data  + *dst_ptr);
238
        (*dst_ptr) +=4;
239
        (*src_ptr)+=4;;
240
      }
241
      break;
242
 
243
    case R_H8500_PCREL8:
244
      {
245
        bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
246
                                                  input_section);
247
        bfd_vma dot = link_order->offset
248
          + *dst_ptr
249
            + link_order->u.indirect.section->output_section->vma;
250
        int gap = dst - dot - 1; /* -1 since were in the odd byte of the
251
                                    word and the pc's been incremented */
252
 
253
        if (gap > 128 || gap < -128)
254
          {
255
            if (! ((*link_info->callbacks->reloc_overflow)
256
                   (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
257
                    reloc->howto->name, reloc->addend, input_section->owner,
258
                    input_section, reloc->address)))
259
              abort ();
260
          }
261
        bfd_put_8 (in_abfd, gap, data + *dst_ptr);
262
        (*dst_ptr)++;
263
        (*src_ptr)++;
264
        break;
265
      }
266
    case R_H8500_PCREL16:
267
      {
268
        bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
269
                                                  input_section);
270
        bfd_vma dot = link_order->offset
271
          + *dst_ptr
272
            + link_order->u.indirect.section->output_section->vma;
273
        int gap = dst - dot - 1; /* -1 since were in the odd byte of the
274
                                    word and the pc's been incremented */
275
 
276
        if (gap > 32767 || gap < -32768)
277
          {
278
            if (! ((*link_info->callbacks->reloc_overflow)
279
                   (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
280
                    reloc->howto->name, reloc->addend, input_section->owner,
281
                    input_section, reloc->address)))
282
              abort ();
283
          }
284
        bfd_put_16 (in_abfd, gap, data + *dst_ptr);
285
        (*dst_ptr)+=2;
286
        (*src_ptr)+=2;
287
        break;
288
      }
289
 
290
    default:
291
      abort ();
292
    }
293
}
294
 
295
#define coff_reloc16_extra_cases extra_case
296
 
297
#include "coffcode.h"
298
 
299
#undef  coff_bfd_get_relocated_section_contents
300
#undef coff_bfd_relax_section
301
#define coff_bfd_get_relocated_section_contents \
302
  bfd_coff_reloc16_get_relocated_section_contents
303
#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
304
 
305
CREATE_BIG_COFF_TARGET_VEC (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL)

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