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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-7.1/] [bfd/] [verilog.c] - Blame information for rev 227

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1 227 jeremybenn
/* BFD back-end for verilog hex memory dump files.
2
   Copyright 2009
3
   Free Software Foundation, Inc.
4
   Written by Anthony Green <green@moxielogic.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 3 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., 51 Franklin Street - Fifth Floor, Boston,
21
   MA 02110-1301, USA.  */
22
 
23
 
24
/* SUBSECTION
25
        Verilog hex memory file handling
26
 
27
   DESCRIPTION
28
 
29
        Verilog hex memory files cannot hold anything but addresses
30
        and data, so that's all that we implement.
31
 
32
        The syntax of the text file is described in the IEEE standard
33
        for Verilog.  Briefly, the file contains two types of tokens:
34
        data and optional addresses.  The tokens are separated by
35
        whitespace and comments.  Comments may be single line or
36
        multiline, using syntax similar to C++.  Addresses are
37
        specified by a leading "at" character (@) and are always
38
        hexadecimal strings.  Data and addresses may contain
39
        underscore (_) characters.
40
 
41
        If no address is specified, the data is assumed to start at
42
        address 0.  Similarly, if data exists before the first
43
        specified address, then that data is assumed to start at
44
        address 0.
45
 
46
 
47
   EXAMPLE
48
        @1000
49
        01 ae 3f 45 12
50
 
51
   DESCRIPTION
52
        @1000 specifies the starting address for the memory data.
53
        The following characters describe the 5 bytes at 0x1000.  */
54
 
55
 
56
#include "sysdep.h"
57
#include "bfd.h"
58
#include "libbfd.h"
59
#include "libiberty.h"
60
#include "safe-ctype.h"
61
 
62
/* Macros for converting between hex and binary.  */
63
 
64
static const char digs[] = "0123456789ABCDEF";
65
 
66
#define NIBBLE(x)    hex_value(x)
67
#define HEX(buffer) ((NIBBLE ((buffer)[0])<<4) + NIBBLE ((buffer)[1]))
68
#define TOHEX(d, x) \
69
        d[1] = digs[(x) & 0xf]; \
70
        d[0] = digs[((x) >> 4) & 0xf];
71
 
72
/* When writing a verilog memory dump file, we write them in the order
73
   in which they appear in memory. This structure is used to hold them
74
   in memory.  */
75
 
76
struct verilog_data_list_struct
77
{
78
  struct verilog_data_list_struct *next;
79
  bfd_byte * data;
80
  bfd_vma where;
81
  bfd_size_type size;
82
};
83
 
84
typedef struct verilog_data_list_struct verilog_data_list_type;
85
 
86
/* The verilog tdata information.  */
87
 
88
typedef struct verilog_data_struct
89
{
90
  verilog_data_list_type *head;
91
  verilog_data_list_type *tail;
92
}
93
tdata_type;
94
 
95
static bfd_boolean
96
verilog_set_arch_mach (bfd *abfd, enum bfd_architecture arch, unsigned long mach)
97
{
98
  if (arch != bfd_arch_unknown)
99
    return bfd_default_set_arch_mach (abfd, arch, mach);
100
 
101
  abfd->arch_info = & bfd_default_arch_struct;
102
  return TRUE;
103
}
104
 
105
/* We have to save up all the outpu for a splurge before output.  */
106
 
107
static bfd_boolean
108
verilog_set_section_contents (bfd *abfd,
109
                              sec_ptr section,
110
                              const void * location,
111
                              file_ptr offset,
112
                              bfd_size_type bytes_to_do)
113
{
114
  tdata_type *tdata = abfd->tdata.verilog_data;
115
  verilog_data_list_type *entry;
116
 
117
  entry = (verilog_data_list_type *) bfd_alloc (abfd, sizeof (* entry));
118
  if (entry == NULL)
119
    return FALSE;
120
 
121
  if (bytes_to_do
122
      && (section->flags & SEC_ALLOC)
123
      && (section->flags & SEC_LOAD))
124
    {
125
      bfd_byte *data;
126
 
127
      data = (bfd_byte *) bfd_alloc (abfd, bytes_to_do);
128
      if (data == NULL)
129
        return FALSE;
130
      memcpy ((void *) data, location, (size_t) bytes_to_do);
131
 
132
      entry->data = data;
133
      entry->where = section->lma + offset;
134
      entry->size = bytes_to_do;
135
 
136
      /* Sort the records by address.  Optimize for the common case of
137
         adding a record to the end of the list.  */
138
      if (tdata->tail != NULL
139
          && entry->where >= tdata->tail->where)
140
        {
141
          tdata->tail->next = entry;
142
          entry->next = NULL;
143
          tdata->tail = entry;
144
        }
145
      else
146
        {
147
          verilog_data_list_type **look;
148
 
149
          for (look = &tdata->head;
150
               *look != NULL && (*look)->where < entry->where;
151
               look = &(*look)->next)
152
            ;
153
          entry->next = *look;
154
          *look = entry;
155
          if (entry->next == NULL)
156
            tdata->tail = entry;
157
        }
158
    }
159
  return TRUE;
160
}
161
 
162
static bfd_boolean
163
verilog_write_address (bfd *abfd, bfd_vma address)
164
{
165
  char buffer[12];
166
  char *dst = buffer;
167
  bfd_size_type wrlen;
168
 
169
  /* Write the address.  */
170
  *dst++ = '@';
171
  TOHEX (dst, (address >> 24));
172
  dst += 2;
173
  TOHEX (dst, (address >> 16));
174
  dst += 2;
175
  TOHEX (dst, (address >> 8));
176
  dst += 2;
177
  TOHEX (dst, (address));
178
  dst += 2;
179
  *dst++ = '\r';
180
  *dst++ = '\n';
181
  wrlen = dst - buffer;
182
 
183
  return bfd_bwrite ((void *) buffer, wrlen, abfd) == wrlen;
184
}
185
 
186
/* Write a record of type, of the supplied number of bytes. The
187
   supplied bytes and length don't have a checksum. That's worked out
188
   here.  */
189
 
190
static bfd_boolean
191
verilog_write_record (bfd *abfd,
192
                      const bfd_byte *data,
193
                      const bfd_byte *end)
194
{
195
  char buffer[48];
196
  const bfd_byte *src = data;
197
  char *dst = buffer;
198
  bfd_size_type wrlen;
199
 
200
  /* Write the data.  */
201
  for (src = data; src < end; src++)
202
    {
203
      TOHEX (dst, *src);
204
      dst += 2;
205
      *dst++ = ' ';
206
    }
207
  *dst++ = '\r';
208
  *dst++ = '\n';
209
  wrlen = dst - buffer;
210
 
211
  return bfd_bwrite ((void *) buffer, wrlen, abfd) == wrlen;
212
}
213
 
214
static bfd_boolean
215
verilog_write_section (bfd *abfd,
216
                       tdata_type *tdata ATTRIBUTE_UNUSED,
217
                       verilog_data_list_type *list)
218
{
219
  unsigned int octets_written = 0;
220
  bfd_byte *location = list->data;
221
 
222
  verilog_write_address (abfd, list->where);
223
  while (octets_written < list->size)
224
    {
225
      bfd_vma address;
226
      unsigned int octets_this_chunk = list->size - octets_written;
227
 
228
      if (octets_this_chunk > 16)
229
        octets_this_chunk = 16;
230
 
231
      address = list->where + octets_written / bfd_octets_per_byte (abfd);
232
 
233
      if (! verilog_write_record (abfd,
234
                                  location,
235
                                  location + octets_this_chunk))
236
        return FALSE;
237
 
238
      octets_written += octets_this_chunk;
239
      location += octets_this_chunk;
240
    }
241
 
242
  return TRUE;
243
}
244
 
245
static bfd_boolean
246
verilog_write_object_contents (bfd *abfd)
247
{
248
  tdata_type *tdata = abfd->tdata.verilog_data;
249
  verilog_data_list_type *list;
250
 
251
  /* Now wander though all the sections provided and output them.  */
252
  list = tdata->head;
253
 
254
  while (list != (verilog_data_list_type *) NULL)
255
    {
256
      if (! verilog_write_section (abfd, tdata, list))
257
        return FALSE;
258
      list = list->next;
259
    }
260
  return TRUE;
261
}
262
 
263
/* Initialize by filling in the hex conversion array.  */
264
 
265
static void
266
verilog_init (void)
267
{
268
  static bfd_boolean inited = FALSE;
269
 
270
  if (! inited)
271
    {
272
      inited = TRUE;
273
      hex_init ();
274
    }
275
}
276
 
277
/* Set up the verilog tdata information.  */
278
 
279
static bfd_boolean
280
verilog_mkobject (bfd *abfd)
281
{
282
  tdata_type *tdata;
283
 
284
  verilog_init ();
285
 
286
  tdata = (tdata_type *) bfd_alloc (abfd, sizeof (tdata_type));
287
  if (tdata == NULL)
288
    return FALSE;
289
 
290
  abfd->tdata.verilog_data = tdata;
291
  tdata->head = NULL;
292
  tdata->tail = NULL;
293
 
294
  return TRUE;
295
}
296
 
297
#define verilog_close_and_cleanup                    _bfd_generic_close_and_cleanup
298
#define verilog_bfd_free_cached_info                 _bfd_generic_bfd_free_cached_info
299
#define verilog_new_section_hook                     _bfd_generic_new_section_hook
300
#define verilog_bfd_is_target_special_symbol         ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
301
#define verilog_bfd_is_local_label_name              bfd_generic_is_local_label_name
302
#define verilog_get_lineno                           _bfd_nosymbols_get_lineno
303
#define verilog_find_nearest_line                    _bfd_nosymbols_find_nearest_line
304
#define verilog_find_inliner_info                    _bfd_nosymbols_find_inliner_info
305
#define verilog_make_empty_symbol                    _bfd_generic_make_empty_symbol
306
#define verilog_bfd_make_debug_symbol                _bfd_nosymbols_bfd_make_debug_symbol
307
#define verilog_read_minisymbols                     _bfd_generic_read_minisymbols
308
#define verilog_minisymbol_to_symbol                 _bfd_generic_minisymbol_to_symbol
309
#define verilog_get_section_contents_in_window       _bfd_generic_get_section_contents_in_window
310
#define verilog_bfd_get_relocated_section_contents   bfd_generic_get_relocated_section_contents
311
#define verilog_bfd_relax_section                    bfd_generic_relax_section
312
#define verilog_bfd_gc_sections                      bfd_generic_gc_sections
313
#define verilog_bfd_merge_sections                   bfd_generic_merge_sections
314
#define verilog_bfd_is_group_section                 bfd_generic_is_group_section
315
#define verilog_bfd_discard_group                    bfd_generic_discard_group
316
#define verilog_section_already_linked               _bfd_generic_section_already_linked
317
#define verilog_bfd_link_hash_table_create           _bfd_generic_link_hash_table_create
318
#define verilog_bfd_link_hash_table_free             _bfd_generic_link_hash_table_free
319
#define verilog_bfd_link_add_symbols                 _bfd_generic_link_add_symbols
320
#define verilog_bfd_link_just_syms                   _bfd_generic_link_just_syms
321
#define verilog_bfd_final_link                       _bfd_generic_final_link
322
#define verilog_bfd_link_split_section               _bfd_generic_link_split_section
323
 
324
const bfd_target verilog_vec =
325
{
326
  "verilog",                    /* Name.  */
327
  bfd_target_verilog_flavour,
328
  BFD_ENDIAN_UNKNOWN,           /* Target byte order.  */
329
  BFD_ENDIAN_UNKNOWN,           /* Target headers byte order.  */
330
  (HAS_RELOC | EXEC_P |         /* Object flags.  */
331
   HAS_LINENO | HAS_DEBUG |
332
   HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
333
  (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
334
   | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags.  */
335
  0,                             /* Leading underscore.  */
336
  ' ',                          /* AR_pad_char.  */
337
  16,                           /* AR_max_namelen.  */
338
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
339
  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
340
  bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Data.  */
341
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
342
  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
343
  bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Hdrs.  */
344
 
345
  {
346
    _bfd_dummy_target,
347
    _bfd_dummy_target,
348
    _bfd_dummy_target,
349
    _bfd_dummy_target,
350
  },
351
  {
352
    bfd_false,
353
    verilog_mkobject,
354
    bfd_false,
355
    bfd_false,
356
  },
357
  {                             /* bfd_write_contents.  */
358
    bfd_false,
359
    verilog_write_object_contents,
360
    bfd_false,
361
    bfd_false,
362
  },
363
 
364
  BFD_JUMP_TABLE_GENERIC (_bfd_generic),
365
  BFD_JUMP_TABLE_COPY (_bfd_generic),
366
  BFD_JUMP_TABLE_CORE (_bfd_nocore),
367
  BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
368
  BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
369
  BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
370
  BFD_JUMP_TABLE_WRITE (verilog),
371
  BFD_JUMP_TABLE_LINK (_bfd_nolink),
372
  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
373
 
374
  NULL,
375
 
376
  NULL
377
};

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