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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [bfd/] [verilog.c] - Blame information for rev 297

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1 14 khays
/* BFD back-end for verilog hex memory dump files.
2 148 khays
   Copyright 2009, 2010, 2011
3 14 khays
   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
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        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
      unsigned int octets_this_chunk = list->size - octets_written;
226
 
227
      if (octets_this_chunk > 16)
228
        octets_this_chunk = 16;
229
 
230
      if (! verilog_write_record (abfd,
231
                                  location,
232
                                  location + octets_this_chunk))
233
        return FALSE;
234
 
235
      octets_written += octets_this_chunk;
236
      location += octets_this_chunk;
237
    }
238
 
239
  return TRUE;
240
}
241
 
242
static bfd_boolean
243
verilog_write_object_contents (bfd *abfd)
244
{
245
  tdata_type *tdata = abfd->tdata.verilog_data;
246
  verilog_data_list_type *list;
247
 
248
  /* Now wander though all the sections provided and output them.  */
249
  list = tdata->head;
250
 
251
  while (list != (verilog_data_list_type *) NULL)
252
    {
253
      if (! verilog_write_section (abfd, tdata, list))
254
        return FALSE;
255
      list = list->next;
256
    }
257
  return TRUE;
258
}
259
 
260
/* Initialize by filling in the hex conversion array.  */
261
 
262
static void
263
verilog_init (void)
264
{
265
  static bfd_boolean inited = FALSE;
266
 
267
  if (! inited)
268
    {
269
      inited = TRUE;
270
      hex_init ();
271
    }
272
}
273
 
274
/* Set up the verilog tdata information.  */
275
 
276
static bfd_boolean
277
verilog_mkobject (bfd *abfd)
278
{
279
  tdata_type *tdata;
280
 
281
  verilog_init ();
282
 
283
  tdata = (tdata_type *) bfd_alloc (abfd, sizeof (tdata_type));
284
  if (tdata == NULL)
285
    return FALSE;
286
 
287
  abfd->tdata.verilog_data = tdata;
288
  tdata->head = NULL;
289
  tdata->tail = NULL;
290
 
291
  return TRUE;
292
}
293
 
294
#define verilog_close_and_cleanup                    _bfd_generic_close_and_cleanup
295
#define verilog_bfd_free_cached_info                 _bfd_generic_bfd_free_cached_info
296
#define verilog_new_section_hook                     _bfd_generic_new_section_hook
297
#define verilog_bfd_is_target_special_symbol         ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false)
298
#define verilog_bfd_is_local_label_name              bfd_generic_is_local_label_name
299
#define verilog_get_lineno                           _bfd_nosymbols_get_lineno
300
#define verilog_find_nearest_line                    _bfd_nosymbols_find_nearest_line
301
#define verilog_find_inliner_info                    _bfd_nosymbols_find_inliner_info
302
#define verilog_make_empty_symbol                    _bfd_generic_make_empty_symbol
303
#define verilog_bfd_make_debug_symbol                _bfd_nosymbols_bfd_make_debug_symbol
304
#define verilog_read_minisymbols                     _bfd_generic_read_minisymbols
305
#define verilog_minisymbol_to_symbol                 _bfd_generic_minisymbol_to_symbol
306
#define verilog_get_section_contents_in_window       _bfd_generic_get_section_contents_in_window
307
#define verilog_bfd_get_relocated_section_contents   bfd_generic_get_relocated_section_contents
308
#define verilog_bfd_relax_section                    bfd_generic_relax_section
309
#define verilog_bfd_gc_sections                      bfd_generic_gc_sections
310
#define verilog_bfd_merge_sections                   bfd_generic_merge_sections
311
#define verilog_bfd_is_group_section                 bfd_generic_is_group_section
312
#define verilog_bfd_discard_group                    bfd_generic_discard_group
313
#define verilog_section_already_linked               _bfd_generic_section_already_linked
314
#define verilog_bfd_link_hash_table_create           _bfd_generic_link_hash_table_create
315
#define verilog_bfd_link_hash_table_free             _bfd_generic_link_hash_table_free
316
#define verilog_bfd_link_add_symbols                 _bfd_generic_link_add_symbols
317
#define verilog_bfd_link_just_syms                   _bfd_generic_link_just_syms
318
#define verilog_bfd_final_link                       _bfd_generic_final_link
319
#define verilog_bfd_link_split_section               _bfd_generic_link_split_section
320
 
321
const bfd_target verilog_vec =
322
{
323
  "verilog",                    /* Name.  */
324
  bfd_target_verilog_flavour,
325
  BFD_ENDIAN_UNKNOWN,           /* Target byte order.  */
326
  BFD_ENDIAN_UNKNOWN,           /* Target headers byte order.  */
327
  (HAS_RELOC | EXEC_P |         /* Object flags.  */
328
   HAS_LINENO | HAS_DEBUG |
329
   HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
330
  (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS
331
   | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags.  */
332
  0,                             /* Leading underscore.  */
333
  ' ',                          /* AR_pad_char.  */
334
  16,                           /* AR_max_namelen.  */
335 148 khays
  0,                             /* match priority.  */
336 14 khays
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
337
  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
338
  bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Data.  */
339
  bfd_getb64, bfd_getb_signed_64, bfd_putb64,
340
  bfd_getb32, bfd_getb_signed_32, bfd_putb32,
341
  bfd_getb16, bfd_getb_signed_16, bfd_putb16,   /* Hdrs.  */
342
 
343
  {
344
    _bfd_dummy_target,
345
    _bfd_dummy_target,
346
    _bfd_dummy_target,
347
    _bfd_dummy_target,
348
  },
349
  {
350
    bfd_false,
351
    verilog_mkobject,
352
    bfd_false,
353
    bfd_false,
354
  },
355
  {                             /* bfd_write_contents.  */
356
    bfd_false,
357
    verilog_write_object_contents,
358
    bfd_false,
359
    bfd_false,
360
  },
361
 
362
  BFD_JUMP_TABLE_GENERIC (_bfd_generic),
363
  BFD_JUMP_TABLE_COPY (_bfd_generic),
364
  BFD_JUMP_TABLE_CORE (_bfd_nocore),
365
  BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
366
  BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
367
  BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
368
  BFD_JUMP_TABLE_WRITE (verilog),
369
  BFD_JUMP_TABLE_LINK (_bfd_nolink),
370
  BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
371
 
372
  NULL,
373
 
374
  NULL
375
};

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