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[/] [or1k/] [branches/] [oc/] [gdb-5.0/] [bfd/] [coff-h8500.c] - Blame information for rev 1765

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1 104 markom
/* BFD back-end for Hitachi H8/500 COFF binaries.
2
   Copyright 1993, 94, 95, 1997 Free Software Foundation, Inc.
3
   Contributed by Cygnus Support.
4
   Written by Steve Chamberlain, <sac@cygnus.com>.
5
 
6
This file is part of BFD, the Binary File Descriptor library.
7
 
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 2 of the License, or
11
(at your option) any later version.
12
 
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.
17
 
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
21
 
22
#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"
29
 
30
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
31
 
32
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);
35
 
36
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);
39
 
40
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);
43
 
44
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);
47
 
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 =
54
HOWTO (R_H8500_LOW16, 0, 1, 16, false, 0,
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       complain_overflow_dont, 0, "r_low16", true, 0x0000ffff, 0x0000ffff, false);
56
 
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
 
61
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);
63
 
64
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);
67
 
68
 
69
/* Turn a howto into a reloc number */
70
 
71
static int
72
coff_h8500_select_reloc (howto)
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     reloc_howto_type *howto;
74
{
75
  return howto->type;
76
}
77
 
78
#define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto)
79
 
80
 
81
#define BADMAG(x) H8500BADMAG(x)
82
#define H8500 1                 /* Customize coffcode.h */
83
 
84
#define __A_MAGIC_SET__
85
 
86
/* Code to swap in the reloc */
87
#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) \
90
  dst->r_stuff[0] = 'S'; \
91
  dst->r_stuff[1] = 'C';
92
 
93
/* Code to turn a r_type into a howto ptr, uses the above howto table
94
   */
95
 
96
static void
97
rtype2howto(internal, dst)
98
     arelent * internal;
99
     struct internal_reloc *dst;
100
{
101
  switch (dst->r_type)
102
    {
103
    default:
104
      abort ();
105
      break;
106
    case R_H8500_IMM8:
107
      internal->howto = &r_imm8;
108
      break;
109
    case R_H8500_IMM16:
110
      internal->howto = &r_imm16;
111
      break;
112
    case R_H8500_IMM24:
113
      internal->howto = &r_imm24;
114
      break;
115
    case R_H8500_IMM32:
116
      internal->howto = &r_imm32;
117
      break;
118
    case R_H8500_PCREL8:
119
      internal->howto = &r_pcrel8;
120
      break;
121
    case R_H8500_PCREL16:
122
      internal->howto = &r_pcrel16;
123
      break;
124
    case R_H8500_HIGH8:
125
      internal->howto = &r_high8;
126
      break;
127
    case R_H8500_HIGH16:
128
      internal->howto = &r_high16;
129
      break;
130
    case R_H8500_LOW16:
131
      internal->howto = &r_low16;
132
      break;
133
    }
134
}
135
 
136
#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
137
 
138
 
139
/* Perform any necessary magic to the addend in a reloc entry */
140
 
141
 
142
#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
143
 cache_ptr->addend =  ext_reloc.r_offset;
144
 
145
 
146
#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
147
 reloc_processing(relent, reloc, symbols, abfd, section)
148
 
149
static void reloc_processing (relent, reloc, symbols, abfd, section)
150
     arelent * relent;
151
     struct internal_reloc *reloc;
152
     asymbol ** symbols;
153
     bfd * abfd;
154
     asection * section;
155
{
156
  relent->address = reloc->r_vaddr;
157
  rtype2howto (relent, reloc);
158
 
159
  if (reloc->r_symndx > 0)
160
    {
161
      relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
162
    }
163
  else
164
    {
165
      relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
166
    }
167
 
168
 
169
  relent->addend = reloc->r_offset;
170
  relent->address -= section->vma;
171
}
172
 
173
static void
174
extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)
175
     bfd *in_abfd;
176
     struct bfd_link_info *link_info;
177
     struct bfd_link_order *link_order;
178
     arelent *reloc;
179
     bfd_byte *data;
180
     unsigned int *src_ptr;
181
     unsigned int *dst_ptr;
182
{
183
  bfd_byte *d = data+*dst_ptr;
184
  asection *input_section = link_order->u.indirect.section;
185
  switch (reloc->howto->type)
186
    {
187
    case R_H8500_IMM8:
188
      bfd_put_8 (in_abfd,
189
                 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
190
                 d);
191
      (*dst_ptr) += 1;
192
      (*src_ptr) += 1;
193
      break;
194
 
195
    case R_H8500_HIGH8:
196
      bfd_put_8 (in_abfd,
197
                 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
198
                  >> 16),
199
                 d );
200
      (*dst_ptr) += 1;
201
      (*src_ptr) += 1;
202
      break;
203
 
204
    case R_H8500_IMM16:
205
      bfd_put_16 (in_abfd,
206
                  bfd_coff_reloc16_get_value (reloc, link_info, input_section),
207
                  d  );
208
      (*dst_ptr) += 2;
209
      (*src_ptr) += 2;
210
      break;
211
 
212
    case R_H8500_LOW16:
213
      bfd_put_16 (in_abfd,
214
                  bfd_coff_reloc16_get_value (reloc, link_info, input_section),
215
                  d);
216
 
217
      (*dst_ptr) += 2;
218
      (*src_ptr) += 2;
219
      break;
220
 
221
    case R_H8500_HIGH16:
222
      bfd_put_16 (in_abfd,
223
                  (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
224
                   >>16),
225
                  d);
226
 
227
      (*dst_ptr) += 2;
228
      (*src_ptr) += 2;
229
      break;
230
 
231
    case R_H8500_IMM24:
232
      {
233
        int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
234
        int o = bfd_get_32(in_abfd, data+ *dst_ptr -1);
235
        v = (v & 0x00ffffff) | (o & 0xff00000);
236
        bfd_put_32 (in_abfd, v, data  + *dst_ptr -1);
237
        (*dst_ptr) +=3;
238
        (*src_ptr)+=3;;
239
      }
240
      break;
241
    case R_H8500_IMM32:
242
      {
243
        int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
244
        bfd_put_32 (in_abfd, v, data  + *dst_ptr);
245
        (*dst_ptr) +=4;
246
        (*src_ptr)+=4;;
247
      }
248
      break;
249
 
250
 
251
    case R_H8500_PCREL8:
252
      {
253
        bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
254
                                                  input_section);
255
        bfd_vma dot = link_order->offset
256
          + *dst_ptr
257
            + link_order->u.indirect.section->output_section->vma;
258
        int gap = dst - dot - 1; /* -1 since were in the odd byte of the
259
                                    word and the pc's been incremented */
260
 
261
        if (gap > 128 || gap < -128)
262
          {
263
            if (! ((*link_info->callbacks->reloc_overflow)
264
                   (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
265
                    reloc->howto->name, reloc->addend, input_section->owner,
266
                    input_section, reloc->address)))
267
              abort ();
268
          }
269
        bfd_put_8 (in_abfd, gap, data + *dst_ptr);
270
        (*dst_ptr)++;
271
        (*src_ptr)++;
272
        break;
273
      }
274
    case R_H8500_PCREL16:
275
      {
276
        bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
277
                                                  input_section);
278
        bfd_vma dot = link_order->offset
279
          + *dst_ptr
280
            + link_order->u.indirect.section->output_section->vma;
281
        int gap = dst - dot - 1; /* -1 since were in the odd byte of the
282
                                    word and the pc's been incremented */
283
 
284
        if (gap > 32767 || gap < -32768)
285
          {
286
            if (! ((*link_info->callbacks->reloc_overflow)
287
                   (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
288
                    reloc->howto->name, reloc->addend, input_section->owner,
289
                    input_section, reloc->address)))
290
              abort ();
291
          }
292
        bfd_put_16 (in_abfd, gap, data + *dst_ptr);
293
        (*dst_ptr)+=2;
294
        (*src_ptr)+=2;
295
        break;
296
      }
297
 
298
    default:
299
      abort ();
300
    }
301
}
302
 
303
#define coff_reloc16_extra_cases extra_case
304
 
305
#include "coffcode.h"
306
 
307
 
308
#undef  coff_bfd_get_relocated_section_contents
309
#undef coff_bfd_relax_section
310
#define coff_bfd_get_relocated_section_contents \
311
  bfd_coff_reloc16_get_relocated_section_contents
312
#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
313
 
314
CREATE_BIG_COFF_TARGET_VEC (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL)

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