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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [bfd/] [coff-h8500.c] - Blame information for rev 24

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1 24 jeremybenn
/* BFD back-end for Renesas H8/500 COFF binaries.
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   Copyright 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002, 2003, 2004,
3
   2005, 2007 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
11
   the Free Software Foundation; either version 3 of the License, or
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   (at your option) any later version.
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14
   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., 51 Franklin Street - Fifth Floor, Boston,
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   MA 02110-1301, USA.  */
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24
#include "sysdep.h"
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#include "bfd.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"
31
 
32
static int  coff_h8500_select_reloc PARAMS ((reloc_howto_type *));
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static void rtype2howto      PARAMS ((arelent *, struct internal_reloc *));
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static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *));
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static void extra_case       PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *, bfd_byte *, unsigned int *, unsigned int *));
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#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
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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);
46
 
47
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);
50
 
51
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);
54
 
55
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);
58
 
59
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);
62
 
63
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);
65
 
66
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);
68
 
69
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);
72
 
73
/* Turn a howto into a reloc number.  */
74
 
75
static int
76
coff_h8500_select_reloc (howto)
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     reloc_howto_type *howto;
78
{
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  return howto->type;
80
}
81
 
82
#define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto)
83
 
84
#define BADMAG(x) H8500BADMAG(x)
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#define H8500 1                 /* Customize coffcode.h */
86
 
87
#define __A_MAGIC_SET__
88
 
89
/* Code to swap in the reloc.  */
90
#define SWAP_IN_RELOC_OFFSET    H_GET_32
91
#define SWAP_OUT_RELOC_OFFSET   H_PUT_32
92
#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
93
  dst->r_stuff[0] = 'S'; \
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  dst->r_stuff[1] = 'C';
95
 
96
/* Code to turn a r_type into a howto ptr, uses the above howto table.  */
97
 
98
static void
99
rtype2howto (internal, dst)
100
     arelent * internal;
101
     struct internal_reloc *dst;
102
{
103
  switch (dst->r_type)
104
    {
105
    default:
106
      abort ();
107
      break;
108
    case R_H8500_IMM8:
109
      internal->howto = &r_imm8;
110
      break;
111
    case R_H8500_IMM16:
112
      internal->howto = &r_imm16;
113
      break;
114
    case R_H8500_IMM24:
115
      internal->howto = &r_imm24;
116
      break;
117
    case R_H8500_IMM32:
118
      internal->howto = &r_imm32;
119
      break;
120
    case R_H8500_PCREL8:
121
      internal->howto = &r_pcrel8;
122
      break;
123
    case R_H8500_PCREL16:
124
      internal->howto = &r_pcrel16;
125
      break;
126
    case R_H8500_HIGH8:
127
      internal->howto = &r_high8;
128
      break;
129
    case R_H8500_HIGH16:
130
      internal->howto = &r_high16;
131
      break;
132
    case R_H8500_LOW16:
133
      internal->howto = &r_low16;
134
      break;
135
    }
136
}
137
 
138
#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
139
 
140
/* Perform any necessary magic to the addend in a reloc entry.  */
141
 
142
#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
143
 cache_ptr->addend =  ext_reloc.r_offset;
144
 
145
#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
146
 reloc_processing(relent, reloc, symbols, abfd, section)
147
 
148
static void reloc_processing (relent, reloc, symbols, abfd, section)
149
     arelent * relent;
150
     struct internal_reloc *reloc;
151
     asymbol ** symbols;
152
     bfd * abfd;
153
     asection * section;
154
{
155
  relent->address = reloc->r_vaddr;
156
  rtype2howto (relent, reloc);
157
 
158
  if (reloc->r_symndx > 0)
159
    relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
160
  else
161
    relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
162
 
163
  relent->addend = reloc->r_offset;
164
  relent->address -= section->vma;
165
}
166
 
167
static void
168
extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)
169
     bfd *in_abfd;
170
     struct bfd_link_info *link_info;
171
     struct bfd_link_order *link_order;
172
     arelent *reloc;
173
     bfd_byte *data;
174
     unsigned int *src_ptr;
175
     unsigned int *dst_ptr;
176
{
177
  bfd_byte *d = data+*dst_ptr;
178
  asection *input_section = link_order->u.indirect.section;
179
 
180
  switch (reloc->howto->type)
181
    {
182
    case R_H8500_IMM8:
183
      bfd_put_8 (in_abfd,
184
                 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
185
                 d);
186
      (*dst_ptr) += 1;
187
      (*src_ptr) += 1;
188
      break;
189
 
190
    case R_H8500_HIGH8:
191
      bfd_put_8 (in_abfd,
192
                 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
193
                  >> 16),
194
                 d);
195
      (*dst_ptr) += 1;
196
      (*src_ptr) += 1;
197
      break;
198
 
199
    case R_H8500_IMM16:
200
      bfd_put_16 (in_abfd,
201
                  bfd_coff_reloc16_get_value (reloc, link_info, input_section),
202
                  d);
203
      (*dst_ptr) += 2;
204
      (*src_ptr) += 2;
205
      break;
206
 
207
    case R_H8500_LOW16:
208
      bfd_put_16 (in_abfd,
209
                  bfd_coff_reloc16_get_value (reloc, link_info, input_section),
210
                  d);
211
 
212
      (*dst_ptr) += 2;
213
      (*src_ptr) += 2;
214
      break;
215
 
216
    case R_H8500_HIGH16:
217
      bfd_put_16 (in_abfd,
218
                  (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
219
                   >> 16),
220
                  d);
221
 
222
      (*dst_ptr) += 2;
223
      (*src_ptr) += 2;
224
      break;
225
 
226
    case R_H8500_IMM24:
227
      {
228
        int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
229
        int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1);
230
        v = (v & 0x00ffffff) | (o & 0xff00000);
231
        bfd_put_32 (in_abfd, (bfd_vma) v, data  + *dst_ptr -1);
232
        (*dst_ptr) += 3;
233
        (*src_ptr) += 3;;
234
      }
235
      break;
236
    case R_H8500_IMM32:
237
      {
238
        int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
239
        bfd_put_32 (in_abfd, (bfd_vma) v, data  + *dst_ptr);
240
        (*dst_ptr) += 4;
241
        (*src_ptr) += 4;;
242
      }
243
      break;
244
 
245
    case R_H8500_PCREL8:
246
      {
247
        bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
248
                                                  input_section);
249
        bfd_vma dot = (*dst_ptr
250
                       + input_section->output_offset
251
                       + input_section->output_section->vma);
252
        int gap = dst - dot - 1; /* -1 since were in the odd byte of the
253
                                    word and the pc's been incremented.  */
254
 
255
        if (gap > 128 || gap < -128)
256
          {
257
            if (! ((*link_info->callbacks->reloc_overflow)
258
                   (link_info, NULL,
259
                    bfd_asymbol_name (*reloc->sym_ptr_ptr),
260
                    reloc->howto->name, reloc->addend, input_section->owner,
261
                    input_section, reloc->address)))
262
              abort ();
263
          }
264
        bfd_put_8 (in_abfd, gap, data + *dst_ptr);
265
        (*dst_ptr)++;
266
        (*src_ptr)++;
267
        break;
268
      }
269
    case R_H8500_PCREL16:
270
      {
271
        bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
272
                                                  input_section);
273
        bfd_vma dot = (*dst_ptr
274
                       + input_section->output_offset
275
                       + input_section->output_section->vma);
276
        int gap = dst - dot - 1; /* -1 since were in the odd byte of the
277
                                    word and the pc's been incremented.  */
278
 
279
        if (gap > 32767 || gap < -32768)
280
          {
281
            if (! ((*link_info->callbacks->reloc_overflow)
282
                   (link_info, NULL,
283
                    bfd_asymbol_name (*reloc->sym_ptr_ptr),
284
                    reloc->howto->name, reloc->addend, input_section->owner,
285
                    input_section, reloc->address)))
286
              abort ();
287
          }
288
        bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr);
289
        (*dst_ptr) += 2;
290
        (*src_ptr) += 2;
291
        break;
292
      }
293
 
294
    default:
295
      abort ();
296
    }
297
}
298
 
299
#define coff_reloc16_extra_cases extra_case
300
 
301
#include "coffcode.h"
302
 
303
#undef  coff_bfd_get_relocated_section_contents
304
#undef coff_bfd_relax_section
305
#define coff_bfd_get_relocated_section_contents \
306
  bfd_coff_reloc16_get_relocated_section_contents
307
#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
308
 
309
CREATE_BIG_COFF_TARGET_VEC (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL, COFF_SWAP_TABLE)

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